A sewing machine needle strength detection device

Abstract

The present invention relates to a sewing machine needle strength detection device applied to the field of sewing machine needle detection technology, comprising a device platform, a detection platform, a needle tip block, a vertical pressure module, a needle handle block, a machine needle, a flip support, a tightening slider, an end column, a spring and a binding wire. The present invention installs the machine needle between the needle tip block and the needle handle block, uses the needle tip block to plug and fix the needle tip of the machine needle, and the vertical pressure module applies vertical pressure to the machine needle to simulate the normal working pressure of the machine needle, thereby effectively improving the authenticity of the strength detection data. By using the binding wire to pass through the pinhole on the needle tip, the fixing effect of the needle tip is further improved. After the machine needle breaks, the binding wire effectively prevents the needle tip from detaching from the needle tip block, effectively avoiding the broken needle tip from causing stabbing accidents to the detection personnel, thereby effectively preventing the broken needle tip from causing safety accidents.

Description

Technical Field

[0001] The present invention relates to a detection device, in particular to a sewing machine needle strength detection device applied in the technical field of sewing machine needle detection. Background Art

[0002] A sewing machine is a machine that uses one or more sewing threads to form one or more stitches on the sewing material, so that one or more layers of sewing material are interwoven or sewn together. The sewing needles used in sewing machines are different from those used by hand. The most intuitive sewing machine needle has its needle hole opened at the needle tip. The strength of sewing machine needles needs to be tested during production and processing.

[0003] The specification of Chinese invention patent CN202122386218.3 discloses a "needle quality detection device", which facilitates the test of the anti-deformation performance of sewing machine needles, which are small workpieces, by setting a driving part, a support plate, a pressure block, a spring, a telescopic rod, a pressure sensor and a contact block. By setting a cover plate, a threaded groove, a threaded block, a connecting rod and a handle, it is convenient to fix the sewing machine needle to be tested on the U-shaped block to prevent it from bending and flying out of the U-shaped block during the anti-deformation performance test.

[0004] The main movement direction of existing sewing machine needles is up and down, so the strength test of sewing machine needles needs to correspond to their working direction. The sewing machine needle may break during the testing process. Since the tip of the sewing needle is very sharp, the existing testing equipment lacks fixation of the needle tip. After the needle breaks, the sharp needle tip can easily cause safety accidents and affect the use of the testing equipment. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the tip of a sewing needle is very sharp, and the existing detection equipment lacks fixation of the needle tip. After the needle breaks, the sharp needle tip can easily cause safety accidents and affect the use of the detection equipment.

[0006] In order to solve the above problems, the present invention provides a sewing machine needle strength detection device, comprising a device platform, the bottom of the device platform is fixedly connected to the detection platform, the top of the detection platform is movably connected to the needle tip block, the top of the device platform is fixedly connected to the vertical pressure module, the output end of the vertical pressure module is fixedly connected to the needle handle block, and a sewing machine needle is inserted between the needle tip block and the needle handle block;

[0007] One end of the needle tip alignment block is hinged with a flip support, the top of the flip support is slidably connected to a tightening slider, the top of the hinged end of the flip support is fixedly connected to an end column, a spring is fixedly connected between the tightening slider and the bottom of the end column, and a binding wire is sleeved between the two ends of the tightening slider, and the binding wire passes through the needle hole of the machine needle.

[0008] In the above-mentioned sewing machine needle strength detection device, the needle tip of the machine needle is inserted into the needle tip block, and then the binding thread is passed through the needle hole of the needle, so that the needle tip is effectively fixed, thereby effectively preventing the needle tip from falling off after breaking, and effectively avoiding safety hazards caused by sharpness.

[0009] As a further improvement of the present application, a tying sleeve is fixedly connected to the middle part of the needle tip alignment block, the inner hole of the tying sleeve is conically set corresponding to the needle tip of the machine needle, the tying sleeve is made of elastic rubber material, the machine needle is inserted into the circular hole in the tying sleeve, and the tying sleeve made of elastic rubber material tightens the needle tip, effectively improving the stability of the needle tip.

[0010] As a further improvement of the present application, the binding wire is arranged in a ring shape, and both ends of the binding wire are fixedly connected with fixing rings. The binding wire is made of tensile fiber material. The ring-shaped binding wire is straightened into a linear shape, so that the binding wire can pass through the needle hole of the machine needle in a two-strand state. The fixing ring fixes the two ends of the binding wire, so that the two ends of the binding wire are in a round hole state, which is convenient for the binding wire to be set on the tightening slider.

[0011] As a further improvement of the present application, the end column is vertically connected to the flip support, and a pressure spring is fixedly connected between the top of the end column and the needle tip alignment block. The pressure spring is utilized to push the end column to realize the downward flipping of the flip support, thereby realizing that the binding wire applies force downward to the needle hole of the machine needle, effectively preventing the needle tip from escaping from the piercing sleeve.

[0012] As another improvement of the present application, the top end of the pressure spring sheet is bent toward the direction of the machine needle, and the bent end of the pressure spring sheet contacts the binding wire. The pressure spring sheet is made of spring steel, and the top end of the pressure spring sheet is bent downward and pressed on the binding wire, thereby further achieving the binding wire applying a downward pulling force to the needle hole of the machine needle, thereby further effectively improving the fixing effect of the needle tip.

[0013] As another improved supplement of the present application, one end of the needle tip alignment block away from the flip support is fixedly connected to a transverse push bracket, one end of the detection platform is fixedly connected to a transverse pressure module, the output end of the transverse pressure module is fixedly connected to the transverse push bracket, and the transverse pressure module applies a transverse thrust to the needle tip alignment block through the transverse push bracket, simulating the lateral force exerted on the machine needle during the sewing process, further enhancing the authenticity of the detection process, thereby effectively improving the accuracy of the experimental detection.

[0014] As another improved supplement of the present application, a cover shell is fixedly connected to the top of the horizontal push bracket, the cover shell is parallel to the machine needle, and a receiving tray is placed at the bottom of the cover shell. The cover shell is used to protect the outside of the machine needle, thereby effectively preventing broken fragments of the machine needle from flying out.

[0015] As another improvement of the present application, the cover shell is arranged in a C shape, and a swing door is hinged at the front end of the cover shell. The swing door is correspondingly combined with the cover shell. The C-shaped cover shell mainly protects the top area of ​​the horizontal push bracket, and the swing door protects the remaining area. The inspector opens the swing door to load and unload the machine needle.

[0016] As another improved supplement of the present application, the bottom end of the receiving tray is arranged at an inclined surface, and a magnet column is fixedly connected to the middle part of the bottom end of the receiving tray. The bottom end of the receiving tray is tilted toward the needle to facilitate the broken fragments to fly into the receiving tray, and the fragments are adsorbed and fixed by the magnet column.

[0017] As another improvement supplement of the present application, a baffle is fixedly connected to the outer ring of the bottom end of the receiving plate. The baffle is distributed in a ring shape about the magnet column and is made of plastic. The baffle is used to buffer flying debris, making it easier for the magnet column to absorb the debris. The baffle provides auxiliary wrapping for the debris, effectively improving the collection stability of the debris.

[0018] In summary, the present invention installs the machine needle between the needle tip block and the needle handle block, uses the needle tip block to plug and fix the needle tip, and the vertical pressure module applies vertical pressure to the machine needle to simulate the pressure condition of the machine needle in normal operation, thereby effectively improving the authenticity of the strength detection data, and by using the binding wire to pass through the pinhole on the needle tip, the fixing effect of the needle tip is further improved, and after the machine needle breaks, the needle tip is effectively prevented from detaching from the needle tip block, thereby effectively preventing the broken needle tip from causing a safety accident. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional structural diagram of the first embodiment of the present application;

[0020] Figure 2 This is a three-dimensional structural diagram of a detection platform according to the first embodiment of the present application;

[0021] Figure 3 This is a cross-sectional view of a detection platform according to a first embodiment of the present application;

[0022] Figure 4 This is a three-dimensional structural diagram of the needle tip block of the first embodiment of the present application;

[0023] Figure 5 This is a three-dimensional structural diagram of the flip tray according to the first embodiment of the present application;

[0024] Figure 6 This is a three-dimensional structural diagram of the binding wire in the second embodiment of the present application;

[0025] Figure 7 This is a demonstration diagram of the second embodiment of the present application showing that the needle is subjected to a lateral thrust;

[0026] Figure 8This is a demonstration diagram of the broken state of the needle in the second embodiment of the present application;

[0027] Fig. 9 This is a three-dimensional structural diagram of a cover and a revolving door according to a second embodiment of the present application;

[0028] Fig.10 This is a top-down stereoscopic structural diagram of the receiving tray according to the second embodiment of the present application.

[0029] Description of the numbers in the figure:

[0030] 1. Installation table; 101. Testing table; 2. Needle tip block; 201. Vertical pressure module; 202. Needle handle block; 203. Binding sleeve; 3. Machine needle; 4. Turning support; 401. Tightening slider; 402. End column; 403. Spring; 404. Binding line; 405. Fixing ring; 406. Pressure spring; 5. Horizontal push bracket; 501. Horizontal pressure module; 502. Cover; 503. Receiving tray; 504. Swinging door; 505. Magnet column; 506. Hair stop. DETAILED DESCRIPTION

[0031] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0032] The first implementation method:

[0033] Figure 1-4 It is shown that a sewing machine needle strength detection device comprises a device platform 1, a detection platform 101 is fixedly connected to the bottom of the device platform 1, a needle tip block 2 is movably connected to the top of the detection platform 101, a vertical pressure module 201 is fixedly connected to the top of the device platform 1, a needle handle block 202 is fixedly connected to the output end of the vertical pressure module 201, a machine needle 3 is inserted between the needle tip block 2 and the needle handle block 202, a tying sleeve 203 is fixedly connected to the middle of the needle tip block 2, an inner hole of the tying sleeve 203 is conically arranged corresponding to the needle tip of the machine needle 3, the tying sleeve 203 is made of elastic rubber material, the machine needle 3 is inserted into the circular hole in the tying sleeve 203, and the tying sleeve 203 made of elastic rubber material clamps the needle tip, effectively improving the needle tip stability of the machine needle 3;

[0034] When testing the strength of the needle 3, the needle 3 is placed between the needle tip block 2 and the needle handle block 202. The needle handle of the needle 3 is first fixed in the needle handle block 202, and then the vertical pressure module 201 drives the needle 3 to descend, so that the needle tip of the needle 3 is inserted into the sleeve 203 of the needle tip block 2. The sleeve 203 made of elastic rubber material tightens the needle tip, effectively improving the stability of the needle tip of the needle 3. Then, the pressure data of the vertical pressure module 201 is calibrated. The vertical pressure module 201 applies vertical pressure to the needle 3 to simulate the stress condition of the needle 3 during the normal sewing process until the needle 3 is broken. The pressure data when the needle 3 is broken is detected, thereby obtaining the strength information of the needle 3.

[0035] Figure 3-6 As shown, one end of the needle tip block 2 is hinged with a flip support 4, and a tightening slider 401 is slidably connected to the top of the flip support 4, and an end column 402 is fixedly connected to the top of the hinged end of the flip support 4, and a spring 403 is fixedly connected between the tightening slider 401 and the bottom of the end column 402, and a binding line 404 is sleeved between the two ends of the tightening slider 401, and the binding line 404 passes through the needle hole of the machine needle 3. The binding line 404 is arranged in an annular shape, and the two ends of the binding line 404 are fixedly connected with a fixing ring 405, and the binding line 404 is made of tensile fiber material. The annular binding line 404 is straightened into a linear shape, so that the binding line 404 passes through the needle hole of the machine needle 3 in a two-strand state, and the fixing ring 405 fixes the two ends of the binding line 404, so that the two ends of the binding line 404 are in a round hole state, which is convenient for the binding line 404 to be sleeved on the tightening slider 401;

[0036] After the needle tip of the machine needle 3 is inserted into the binding sleeve 203 of the needle tip block 2, the inspector passes the binding wire 404 through the pinhole of the needle tip, and then puts the two ends of the binding wire 404 on the two ends of the tightening slider 401, and uses the tightening slider 401 to push the tightening slider 401 away from the end column 402 to tighten the binding wire 404, thereby further fixing the needle tip of the machine needle 3 and preventing the broken needle tip from escaping from the needle tip block 2. After many experiments, it was found that the broken position of the machine needle 3 is mostly above the pinhole, and in a few cases it will occur at the pinhole position. No breakage occurs below the pinhole. Therefore, the binding of the binding wire 404 to the pinhole of the machine needle 3 effectively prevents the broken needle tip from escaping from the needle tip block 2.

[0037] Figure 5-6 As shown, the end column 402 is vertically connected to the flip support 4, and a pressure spring piece 406 is fixedly connected between the top of the end column 402 and the needle tip aligning block 2. The pressure spring piece 406 is used to push the end column 402 to realize the downward flipping of the flip support 4, so that the binding line 404 applies force downward to the needle hole of the machine needle 3, effectively preventing the needle tip from escaping from the piercing sleeve 203. The top of the pressure spring piece 406 is bent toward the direction of the machine needle 3, and the bent end of the pressure spring piece 406 contacts the binding line 404. The pressure spring piece 406 is made of spring steel. The top of the pressure spring piece 406 is bent downward and pressed on the binding line 404, further realizing that the binding line 404 applies downward pulling force to the needle hole of the machine needle 3, further effectively improving the fixing effect of the needle tip.

[0038] The pressure spring sheet 406 is used to push the end column 402, causing the flip support 4 to flip downward, so that the taut binding line 404 pulls the needle hole of the machine needle 3 obliquely downward, effectively preventing the needle tip from escaping from the piercing sleeve 203, and the top of the pressure spring sheet 406 is bent downward, and the bent part of the top of the pressure spring sheet 406 is pressed on the binding line 404, further increasing the downward pulling force of the binding line 404 on the needle hole, further effectively improving the fixing effect of the needle tip.

[0039] The second implementation method:

[0040] Compared with the first embodiment, this embodiment mainly adds a transverse push bracket 5. The specific newly added structure is as follows, and the remaining structures are consistent with the first embodiment.

[0041] Figure 2 and Figure 7-9 As shown, one end of the needle tip block 2 away from the flip support 4 is fixedly connected to the horizontal push bracket 5, one end of the detection platform 101 is fixedly connected to the horizontal pressure module 501, the output end of the horizontal pressure module 501 is fixedly connected to the horizontal push bracket 5, the horizontal pressure module 501 applies a horizontal thrust to the needle tip block 2 through the horizontal push bracket 5, simulating the horizontal force exerted on the machine needle 3 during the sewing process, further enhancing the authenticity of the detection process, thereby effectively improving the accuracy of the experimental detection, and the top of the horizontal push bracket 5 is fixedly connected to the cover shell 502, the cover shell 50 2 is parallel to the machine needle 3, and a receiving tray 503 is placed at the bottom of the cover 502. The cover 502 is used to protect the outside of the machine needle 3, thereby effectively preventing the broken fragments of the machine needle 3 from flying out. The cover 502 is set in a C shape, and a swing door 504 is hinged at the front end of the cover 502. The swing door 504 is correspondingly combined with the cover 502. The C-shaped cover 502 mainly protects the top area of ​​the horizontal push bracket 5, and the swing door 504 protects the remaining area. The inspection personnel open the swing door 504 to load and unload the machine needle 3;

[0042] When the vertical strength test of the needle 3 is carried out, the transverse pressure module 501 applies a horizontal thrust to the needle tip block 2 through the transverse push bracket 5, simulating the pulling of the fabric on the needle 3 and the improper operation of the sewing machine, further enhancing the authenticity of the detection process, thereby effectively improving the accuracy of the experimental test. The needle tip of the needle 3 is subjected to a transverse thrust, and the direction in which the needle 3 breaks is toward the cover 502. After many experiments, the needle 3 is mostly broken into two sections, but there are also cases where it breaks into multiple sections. Except for the needle handle and the needle tip being fixed, the other segments will fly into the cover 502 and be collected by the receiving tray 503.

[0043] Figure 8-10 As shown, the bottom end of the receiving tray 503 is arranged in an inclined surface, and a magnet column 505 is fixedly connected to the middle part of the bottom end of the receiving tray 503. The bottom end of the receiving tray 503 is inclined toward the needle 3, so that the broken fragments fly into the receiving tray 503, and the fragments are adsorbed and fixed by the magnet column 505. The outer ring of the bottom end of the receiving tray 503 is fixedly connected with a stopper 506, which is distributed in a ring shape with respect to the magnet column 505, and the stopper 506 is made of plastic. The stopper 506 is used to buffer the flying fragments, so that the magnet column 505 can adsorb the debris, and the stopper 506 provides auxiliary wrapping for the fragments, effectively improving the collection stability of the fragments;

[0044] After the fragments generated by the breakage of the needle 3 fly into the cover 502, the fragments collide with the bristles 506, which cushion the fragments and block and wrap the fragments. The fragments are then adsorbed and fixed by the magnet column 505, thereby effectively preventing the fragments from rebounding, facilitating the subsequent collection of the fragments, and effectively preventing the rebound and splashing of the fragments from causing safety hazards.

[0045] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A sewing machine needle strength detection device, Features: The device comprises a device platform (1), the bottom of the device platform (1) is fixedly connected to a detection platform (101), the top of the detection platform (101) is movably connected to a needle tip block (2), the top of the device platform (1) is fixedly connected to a vertical pressure module (201), the output end of the vertical pressure module (201) is fixedly connected to a needle handle block (202), and an organic needle (3) is inserted between the needle tip block (2) and the needle handle block (202); One end of the needle tip alignment block (2) is hingedly connected to a flip support (4), the top of the flip support (4) is slidably connected to a tightening slider (401), the top of the hinged end of the flip support (4) is fixedly connected to an end column (402), a spring (403) is fixedly connected between the tightening slider (401) and the bottom of the end column (402), and a binding line (404) is sleeved between the two ends of the tightening slider (401), and the binding line (404) passes through the needle hole of the machine needle (3).

2. A sewing machine needle strength detection device according to claim 1, Features: A tying sleeve (203) is fixedly connected to the middle of the needle tip aligning block (2), the inner hole of the tying sleeve (203) is arranged in a conical shape corresponding to the needle tip of the machine needle (3), and the tying sleeve (203) is made of an elastic rubber material.

3. A sewing machine needle strength detection device according to claim 1, Features: The binding wire (404) is arranged in a ring shape, and two ends of the binding wire (404) are fixedly connected with fixing rings (405), and the binding wire (404) is made of a tensile fiber material.

4. A sewing machine needle strength detection device according to claim 1, Features: The end column (402) is vertically connected to the flip support (4), and a compression spring (406) is fixedly connected between the top end of the end column (402) and the needle tip alignment block (2).

5. A sewing machine needle strength detection device according to claim 4, Features: The top end of the compression spring sheet (406) is bent in the direction of the machine needle (3), and the bent end of the compression spring sheet (406) contacts the binding wire (404). The compression spring sheet (406) is made of spring steel.

6. A sewing machine needle strength detection device according to claim 1, Features: One end of the needle tip alignment block (2) away from the flip support (4) is fixedly connected to a transverse push bracket (5), one end of the detection platform (101) is fixedly connected to a transverse pressing module (501), and an output end of the transverse pressing module (501) is fixedly connected to the transverse push bracket (5).

7. A sewing machine needle strength detection device according to claim 6, Features: A cover shell (502) is fixedly connected to the top of the horizontal push bracket (5); the cover shell (502) corresponds to the machine needle (3) in parallel, and a receiving tray (503) is placed at the bottom of the cover shell (502).

8. A sewing machine needle strength detection device according to claim 7, Features: The cover shell (502) is arranged in a C shape, and a revolving door (504) is hingedly connected to the front end of the cover shell (502), and the revolving door (504) is correspondingly combined with the cover shell (502).

9. A sewing machine needle strength detection device according to claim 7, Features: The bottom end of the receiving tray (503) is arranged in an inclined surface, and a magnet column (505) is fixedly connected to the middle of the bottom end of the receiving tray (503).

10. A sewing machine needle strength detection device according to claim 9, Features: The outer ring of the bottom end of the receiving plate (503) is fixedly connected with stop hairs (506), the stop hairs (506) are distributed in a ring shape with respect to the magnet column (505), and the stop hairs (506) are made of plastic.

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