This standard specifies the classification and naming, requirements, test methods, inspection rules and marking, packaging, transportation and storage of double-needle needle-feed lockstitch sewing machine heads. This standard applies to double-needle needle-feed lockstitch sewing machine heads for sewing garments, shoes, hats, bags and other products with thin, medium-thick, thick or underwear materials, denim. This standard also applies to needle-feed lockstitch sewing machine heads with needle bar separation devices for sewing the above-mentioned sewing products. QB/T 1574-2005 Double-needle needle-feed lockstitch sewing machine heads for industrial sewing machines QB/T1574-2005 Standard download decompression password: www.bzxz.net

TCS E1.U80
Fenying No.: Y17
Registration No.: 163992005
Light Industry Standard of the People's Republic of China
QB/T15742005
Replace QB15/4-1902
Industrial sewing machine
Double needle feed lockstitch sewing machine head
Industrialscningmachine
I'win nccdie with nccdle fced ockstitch sewing inachine 2005-07-26 Issued
2006-01-01 Implementation
National Development and Reform Commission of the People's Republic of China Issued Foreword
QH/T1574-2005
This standard is a revision of QB/T1.574-1992T for industrial chain sewing machine heads with double needles and half-end chain sewing. Compared with QB/T1574-1992, the main changes are: the original standard name is changed to "industrial complete machine double-counter feed flat sewing machine head"; the two "reference documents" of the standard are revised. Modification: The original standard "noise reduction" has been changed, and the "grain falling and bean moving" requirement in the performance has been added. The corresponding test method: The "noise reduction" in the operation performance has been changed according to different sewing speeds. When the speed is not less than 3500 stitches/minute, the full-production sound pressure level is not more than 100A): When the maximum speed is greater than 35 stitches/minute, the noise level is not more than 92dn(A):
This product adopts [, step-down belt drive structure, and the "dynamic holding\ is greater than 0.6Nm in the rotation performance. Change to 0.8Nm
Modify the content of "Test Method": Add the production and health standard code and code in "Mark": Check and reduce the standard GB/T2828.1-2003, GB/T2820-2002. This international standard is proposed by China Light Industry Federation. This is the national sewing machine standard center: This standard starts from:! Tushenbei (collective) Co., Ltd.: Shanghai Zhongsewing Machine Co., Ltd., Xinhong Xinjie Sewing Machine Co., Ltd., Shanghai Sewing Machine Research Institute, National Sewing Quality Supervision and Inspection Center This standard is mainly drafted People: Wang Jinyue, Yong Sanxiao, Sun Shuhan, Ming, Zhang Weishi, Hou Xunyong. This standard is based on the original light industry standard QT1-19926 Industrial high-speed double-needle sewing machine head".
wW1 Scope
QB/T1574—2005
Industrial sewing machine head for double-needle needle feed flat-sewing machine This standard defines the classification and naming, requirements, test methods, inspection principles and signs, position tables, withdrawal and storage of double-needle needle feed flat-sewing machine heads for industrial sewing.
This standard is applicable to thin materials,! Double-needle flat-chain sewing machine for sewing thick materials, underwear materials, denim, uniforms, shoes and hats, new products and other high-end materials:
This standard is also applicable to the double-needle flat-chain sewing machine head with bamboo pole separation device for sewing the above-mentioned materials. 2 Normative referenced documents
The clauses in the following documents become non-standard clauses through reference in this standard. All subsequent amendments (excluding errata) or revisions compared to the latest version of the standard are not applicable to this standard. However, the parties may reach an agreement based on this standard to determine whether the latest version of this document can be used. For undated referenced documents, the latest version shall apply to this standard: GBT 191-2000 Packaging film transportation diagram GRT 2828.120M03 Count approval inspection procedure Part 1: Batch inspection according to the quality limit (AQL) plan 2 weeks inspection count sampling tax bed and table GHT 2829—2002 GB/T 45I51984 Classification and terminology of traces GB:T 6R3S—1997 GB/T 6836—1997 GB/T 8949 | --199G
QB/T 2252—1996
QB/T2256—1996
QB/T 25U5-2000
Sewing thread
Polyester special red thread
Urinary ester dry process artificial leather
1Industrial product manual
Sewing machine accessories
Test method for noise level of industrial sewing machine
1.Test method for industrial chain machine
Sewing machine parts: electroplating reverse use conditions Sewing machine model and arrangement or
Maintenance machine automatic transfer test method
Industrial maintenance machine model automatic speed sewing machine head
Technical conditions for blackening of batch parts
QH/T2528-20)1
Technical conditions for coating cracking of engraving machine
3Classification and naming
3. 1 Type
This machine is a flatbed locomotive, with connecting rod or correcting rod picking area, vertical double-release hook line, needle, and lower support feeding, which is controlled by the 301 line specified in R51-1984
3. 2 Basic state number
Benzene parameters are shown in Table 1.
W Customer standard industry data free download QB/T 1574-2005
High seam description/(No.:
Lifting height/mm
Lai Sanse Institute
32 Model representation method
30Go-4x3
Preferred 1.8-64
DPx N75--Nl10
[9.53--9.+correction line (technology 6B683-19977x8 etc. (68
nuclear (2251-1 regulations naming: industry can complete the enterprise in the meeting to use the new egg medicine plan 4 requirements
4.1 appearance quality
411 polyester rely on forget surface 4 consideration notice 0252-2001 according to 51 purchase. 4 1.2 The machine surface should be free of rust and dirt, and the bad brand should be high, and it should be reduced by two, and the gear ratio should be obvious: 41.3 The exposed parts and components of the machine should be pierced 41.4 The plated surface of the seven-level parts should contain ore in accordance with 6.1 of QB/T15721992 41.5 The plate sequence should contain (7.1 of T2505·2000. 4 2 Machine performance || tt || 4.2.1 The flow length, tension, positive force, etc. should be adjustable. 4.2.2, win-win, no piece, should be used or loose line price 4.2.3 The maximum damage length should comply with the provisions of Table 1, 4. 2. 4.2.5 When the reverse cable trace is long, the reverse suction hand should not make more than 20% of the force, and the trace length should be consistent with the original length. The error of the length should not be less than 15%: 43. The sewing performance
is not practiced during learning, and the needle is calculated and. 4. 3. 1
4.3.2 When sewing the chain, the wire should not be broken, the fiber should not be broken, and the thread should not be broken. 4.33 The front should not be reduced, analyzed, and the floating agent should be obtained. 4.3.4 When the chain is drawn at a low speed, the length should be the same, and the length sweep error should be greater than 15%: 4.3.5 The head of the upper and lower chain should not be sensitive to the line, the line, and the line when the chain is about the corner: the needle clutch indexing pump 02 action is strict.
4.4 Operation performance
4.2.1 Operation noise
a Agricultural high-speed operation, there should be abnormal noise:
"When the maximum operation is not more than 3500, the noise method should not be considered 90BA) 2) When the high chain is recorded: 3400, the call sound should not be more than 92B (4) 2
4.4.2 The vibration value of the converter during operation shall not exceed μm
443. 4.4.4 The supply and cleaning system of the lubrication system shall be in good condition during operation. 4.4.5 The sealing performance of the head shall be good and the sealing performance shall be good. 4.5 Accessories and spare parts shall comply with the specifications in the instruction manual or table: 5 Test method
, 5.1 Appearance quality
The light is 0) x-ray, and the test is high 3 days
Q5/15722005
5.2 Machine performance
5.2.! The meter rod clutch will be divided into high and low, and the reset action will be in the test meter! , there is no reason for dispute in the period inspection, the Japanese law judgment: 5.2.2 loose line effect bZxz.net
change the base city Ning, the new dynamic line position: the highest point, according to the requirements of the instruction manual, the needle and thread enjoy the appropriate method after the block report, the load end holds the special quality of 50 yards: according to the fight without inclination selection, the line + beat the dynamic meter level to reach the name of the god from the bottom of the technology under the national name, open the cutting Wanwen break nail and the head let the collection of it, can go through the next 5.2.3 maximum line length
report 7 ground fixed book feeling cattle through enough, the support degree display letter is not less than 0.02mm protection mark, then measure the length of 0 material strokes, take the arithmetic average ring as the maximum stitch length: 5.2.2 jade book raise the outer height
turn on the road, adjust the music to below the service setting, the music will be confused when the service pressure is started! Lift the stop, the small foot high pursuit of the middle gauge or time m, mm, ground out of the pressure, through the .52. 5.2.3 test method for the start action and free reset of the feed wrench. 5.3 Sewing performance
5.31 Preparation before inspection
a) Before the test, the machine shall be tested with the appearance of the machine, and the suction, material and material shall be removed. After the test, the machine shall be rotated at 80% of the speed to 5mlm. The test shall be carried out according to the test conditions of the standard 2. b) The screening speed shall be visually tested with a non-contact tachometer. The test shall be carried out with a difference of about 1% before the test. The tension, trace length and feed tooth height shall be adjusted. If the test is carried out in the following manner, the test shall be carried out again. 5.3.2 Ordinary sewing length unm, fixed 5.3.3 Old soft continuous sewing The upper layer of the test material is staggered and adjusted together, the first dense front is 2000m long), and the continuous continuous sewing is 5000mm, and the daily measurement is carried out. QB/T1574—2005 5.3.4 Layer end sewing Fold the test drawing to solidify, turn over, and judge 2 at the H line 5.3.5 High and low speed continuous sewing line length measures to the error 2 at the end of the test conditions and the core B/12256-1226 5.3.4 test. 5.3.6 Corner slow sewing
Teaching table 2 is the whole cow for trial collection, divided into points and high sides, right pay standard, make the corner drop penalty winter 3 times: "Measurement and determination. Table 2
Measurement, professional standard and diagnosis length
People line speed length
Ken oil short to
This right error
Transfer cloth chain
Operation performance
Operation noise
t"Continue money
Non-half in
1-Thickness (M)
Net material (EL)
A manufacturing method A British
B/T8949
2100×100
600x100
a exhibitor whole speed review cut Light, should go to the outside of the usual household, month 4 listening to the law to judge: number of layers
2-G-2-4-2
Middle grid: 4
8 material: 4
Full outside: 3
Thousands of: 4
Material: 4
According to the product, the knife
says the momentum of the book::
Gradually speed empty
Absorb high absolute separation diagram%
High speed of 80 yuan
Send: Select by signing
QB/T1574—2005
Company) The sound of the sound is tested according to the provisions of QR1171991. Only the head of the needle machine separation is in the right needle bar.
.5. 4. 2 Vibration displacement
Heat to position value Test and monitor according to QA1178-1991: Machines with needle bar separation device: Note: The machine with a clamping rod should be in a non-separated state.
5.4.3 Starting torque
Test with dynamic torque effect QT22521996, and the machine head with needle bar separation device: In the case of the machine head, the needle bar should be in a state of 100% island:
5.4.4 Lubrication
According to QRT22521996 5.4.4. 5.4.5 Sealing
Test according to the flash method specified in QB/T2256-199615.1.5. 5.5. Accessories and spare parts
Count according to the product instructions or packing list, and the number will be in compliance with the specified number. 6 Inspection rules
Factory conditions
Products must pass the inspection of the crown inspection department and be accompanied by a certificate of qualified inspection before they can be shipped. 6.2 Inspection classification
Product inspection is divided into three types: inspection and type inspection. 6. 2.1 Qualification inspection
If the product changes, the product shall be inspected and accepted once a month according to the provisions of this standard. 6.2.2 Type inspection
If the following conditions are met, the product shall be fully evaluated and type inspection shall be carried out. After formal production, if there are major changes in structure, materials, and process, which may affect product performance: one month after the production is stopped, a periodic inspection shall be carried out: after a long period of suspension of production, when the product is resumed, if the inspection result is significantly different from the first type inspection result: the purchaser shall make a request for type inspection. 5.2.3 Classification of non-conforming products for acceptance inspection
The classification of qualification and product classification is shown in Table ?.
6.3 Factory Inspection Rules
3.1 Sample Selection
Samples shall be randomly selected from the batches submitted for inspection. 6.3.2 Sampling Plan and Strict
The inspection shall be conducted once for each sample. The inspection quality shall be determined in accordance with the provisions of GB/T2828.1-2003. 6.3.3 Acceptability Determination
After the inspection of the sample, if the number of unqualified products of Class A and the number of qualified products of Class C found in the Y batch are less than the corresponding acceptance sensitivity (A), the inspection batch is acceptable. The unqualified products of category A found in the sample are called B, and the unqualified products of category C are: the corresponding number of years Re), the control batch is inseparable from the female function: 6.34 The treatment of unacceptable batches The treatment of unacceptable batches should be carried out in accordance with the provisions of 7.2 in GB: T282R.1-2003. 5. Category standard industry data free download QB/F1574. Changjun Xiangsi: Yuling parts surface quality Machine stealing surface External return, external core parts surface quality Seven. The outer surface quality display Issued a piece of inquiry! ：
machine sweep adjustment
investment practice hall
East people long original
several improvements
to chase or start the direction
three-dimensional
read, receive and maintain the line thank length
follow-up e
long extension index error
fast year measurement
frequency inspection energy
consumption belt production
often make powder
reverse method Source
6.4 Type inspection rules
6.4.1 Net current
Lake inspection method
.5,4.2
Give the inspection company
not only this week's manufacturing is rising the whole gold inspection qualification of the relevant individual batch report, open some certificates still to the performance of the table does not use the period of production support level
6.4.2 Sample factors
Type control inspection - concentrated case current table.
64.3 Type inspection compliance or failure judgment QBTT1574-2U35
Report according to the results of the sale of food, if the four types of small combination of H, C are found in the interception, the difference is not big! The number of the center's operation (A) is the number of unqualified products found in the selection. If the net loss of the C-type test is not less than the bridge constant Re, the test will be unqualified: 6.4 The treatment of the type inspection film after the test shall be carried out according to the provisions of 5.12 of (/12829-2002). Table 4
drive balance
not in accordance with the trap type
person position research point day
I make up AOL;
26--50
.1, the standard is natural
2: A more, Re format: H, 4 A. R is not in accordance with: annual verification 2828.
not in accordance with the correct category
single university degree control policy
not in accordance with the level of individual activity RQI:
public disclosure
2003 heart 3# hot line,
, not counted,,, to install
marked, packaging, transportation, storage
7.1 mark
7.1.1 The following external markings shall be placed on the engine head: a) Station number; b) Name: Training phase II; c) Product standard number and product packaging: QB/T1574-2005; d) Product standard number and product packaging: 7.1.3 External packaging storage and transportation markings: According to the provisions of GB/T191-200), the following storage and transportation markings shall be placed: a) Moisture-proof: b) Direction: d) Handle with care; d) Code number and product packaging: 7.2 Product instruction manual: The product instruction manual shall comply with the provisions of GB9969.119. 3 Packaging, transportation and storage
According to the provisions of GH/T16469-1996
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