Friction wear sample polishing device for spinning crochet needle and preparation method of friction wear sample polishing device

Abstract

The invention relates to the technical field of spinning crochet needle production, in particular to a friction wear sample polishing device for spinning crochet needles, which comprises a support frame, a driving part and a turntable, a plurality of placing grooves are formed in the turntable, clamping assemblies for fixing the spinning crochet needles are arranged on the placing grooves, and an extrusion molding assembly for extruding a fixing agent is arranged at the upper end of the turntable. A polishing assembly used for polishing the spinning crochet hook is arranged at the upper end of the rotary disc, a negative pressure assembly used for sucking out a fixing agent is arranged at the lower end of the rotary disc, and a guide rail used for controlling the clamping assembly to clamp and loosen is arranged on the rotary disc. The problems that an existing equipment clamping device cannot fix various crochet hooks in different shapes, only can fix a single type of crochet hooks and is small in application range are solved.

Description

Technical Field

[0001] The invention relates to the technical field of textile crochet production, in particular to a friction and wear sample polishing device for textile crochet and a preparation method thereof. Background Art

[0002] Textile crochet hooks are key components of precision textile equipment such as single- and double-sided large circular machines, small circular machines, rib machines, computer jacquard machines, high-precision single- and double-sided spandex machines, etc. A Chinese utility model patent with application publication number CN219380209U discloses a polishing device for knitting needle processing, including a limiting base, a limiting top seat, a first knitting needle limiting sleeve, and a second knitting needle limiting sleeve. After the position of the knitting needle is limited by the first knitting needle limiting sleeve and the second knitting needle limiting sleeve, the limiting top seat is installed on the outside of the second knitting needle limiting sleeve for limiting. The motor drives the first gear to rotate at the same time, and the polishing belt polishes the outside of the knitting needle. Multiple groups of first knitting needle limiting sleeves can be installed inside the limiting base, that is, the equipment can polish multiple tissue needles at the same time, thereby increasing the polishing efficiency.

[0003] However, the inventors have discovered that, in actual use, the clamping device of the device cannot fix crochet hooks of various shapes, but can only fix a single type of crochet hook, and has a relatively small scope of use. Summary of the invention

[0004] The purpose of the present invention is to address the deficiencies of the prior art. By arranging a clamping assembly for fixing textile crochet hooks on a placement groove, by opening a fixing groove a for placing crochet hooks on a lower clamping block, and by opening a fixing groove b corresponding to the fixing groove a at the lower end of an upper clamping block, a fixing agent is heated by an injection molding machine, a driving member drives an auger to rotate to extrude the fixing agent, the fixing agent is injected into an injection tube through an injection molding tube, and flows into the fixing groove a and the fixing groove b through an injection channel. The textile crochet hook is fixed by the cooling and solidified fixing agent, so that the clamping assembly can fix crochet hooks of various shapes, thereby solving the problem that the clamping device of the existing equipment cannot fix crochet hooks of various shapes, can only fix a single type of crochet hook, and has a small scope of use.

[0005] In view of the above technical problems, the technical solutions adopted by the present invention are as follows:

[0006] A friction and wear sample polishing device for textile crochet hooks comprises a support frame, a driving member and a turntable driven by the driving member, the turntable is provided with a plurality of placement slots, the placement slots are provided with a clamping assembly for fixing the textile crochet hooks, the upper end of the turntable is provided with an extrusion assembly for extruding a fixing agent, the upper end of the turntable is provided with a grinding assembly for grinding the textile crochet hooks, the lower end of the turntable is provided with a negative pressure assembly for sucking out the fixing agent, and the turntable is provided with a guide rail for controlling the clamping and releasing of the clamping assembly.

[0007] As a preferred embodiment, the clamping assembly includes a lower clamping block arranged in a placement groove and an upper clamping block slidably arranged on the lower clamping block, a slide rail is arranged at the rear end of the lower clamping block, a spring is arranged between the upper clamping block and the slide rail, a fixed groove a for placing a textile crochet hook is provided on the lower clamping block, a placement block a is arranged in the fixed groove a, a slot a is arranged at the front end of the fixed groove a for the textile crochet hook to pass through, a liquid suction hole is arranged at the rear end of the lower clamping block, a liquid outlet channel is arranged between the liquid suction hole and the fixed groove a, and heating elements are arranged in both the lower clamping block and the upper clamping block.

[0008] As a preferred embodiment, a fixing groove b corresponding to the fixing groove a is provided at the lower end of the upper clamping block, a placing block b is provided in the fixing groove b, a slot a for the textile crochet needle to pass through is provided at the front end of the fixing groove b, a guide rod and an injection tube are provided on the upper clamping block, and an injection channel is provided between the injection tube and the fixing groove b.

[0009] Preferably, the extrusion assembly includes an injection molding machine, a driving member arranged in the injection molding machine, and an auger driven by the driving member. An injection molding tube is arranged at the lower end of the injection molding machine, a feed pipe is arranged at the side wall of the injection molding machine, and a feed bin is arranged at the upper end of the feed pipe.

[0010] As a preference, the fixing agent in the extruder is polyurethane.

[0011] Preferably, the grinding assembly comprises a lower grinding piece, an upper grinding piece and a grinding robot, and a plurality of grinding blocks are arranged on the lower grinding piece and the upper grinding piece.

[0012] Preferably, the negative pressure assembly includes a negative pressure chamber and a negative pressure tube slidably disposed on the upper end of the negative pressure chamber.

[0013] As a preference, a feeding section, an injection molding section, a grinding section, a negative pressure section and a transition section are sequentially arranged on the guide rail.

[0014] As another preferred embodiment, a plurality of pipettes corresponding to the pipette holes are provided at the lower end of the turntable.

[0015] A method for preparing a friction and wear sample for a textile crochet needle, using a friction and wear sample polishing device for a textile crochet needle, comprises the following steps:

[0016] a. Material selection process: According to the service conditions of textile crochet hooks, the material selected is T10 steel;

[0017] b. stamping process, the textile crochet is stamped into shape by a stamping machine, and the textile crochet is ground by a polishing machine;

[0018] c. Polishing process, the textile crochet hook is placed in the placement groove by a robot, the upper clamping block is pressed down by the guide rail to fit tightly with the lower clamping block, the fixing agent is heated by the injection molding machine, the fixing agent is squeezed out by the driving part to drive the auger to rotate, and the fixing agent is injected into the injection tube through the injection tube, and flows into the fixing groove a and the fixing groove b through the injection channel. The textile crochet hook is fixed by the cooled and solidified fixing agent, and the surface of the textile crochet hook is polished and polished by the polishing assembly, and the fixing agent is heated by the lower clamping block and the upper clamping block to melt it, and the fixing agent is sucked out of the suction tube through the negative pressure tube and stored in the negative pressure bin, and the textile crochet hook is taken out by the robot and sent to the next station.

[0019] d. Superhardening and toughening process, by placing the textile hook into the nitriding furnace, isothermally nitriding it, and denitriding it 2 hours before the end of nitriding, the denitriding temperature is increased to 500 ° C, cooled in the nitriding furnace, and then the nitrided sample is lightly ground and polished.

[0020] e. Simulation of working conditions: According to the actual working conditions of textile crochet hooks, the test uses a friction and wear testing machine, the reciprocating MDW-02, to destroy the crochet hooks through accelerated testing to simulate fatigue damage after long-term use.

[0021] Beneficial effects of the present invention:

[0022] 1. In the present invention, a clamping assembly for fixing a textile crochet hook is arranged on a placement groove, a fixing groove a for placing a crochet hook is opened on a lower clamping block, a fixing groove b corresponding to the fixing groove a is opened at the lower end of an upper clamping block, a fixing agent is heated by an injection molding machine, a driving member drives an auger to rotate to extrude the fixing agent, the fixing agent is injected into an injection tube through an injection molding tube, and flows into the fixing groove a and the fixing groove b through an injection channel, and the textile crochet hook is fixed by the cooling and solidified fixing agent, so that the clamping assembly can fix crochet hooks of various shapes.

[0023] In summary, the device has the advantage of clamping and fixing crochet hooks of various shapes, and is particularly suitable for the field of textile crochet production technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the structure of a polishing device for friction and wear specimens for textile crochet needles;

[0026] Figure 2 It is a front view of a polishing device for friction and wear specimens for textile crochet needles;

[0027] Figure 3 is a cutaway schematic diagram of the lower clamping block;

[0028] Figure 4 is a cross-sectional schematic diagram of the upper clamping block;

[0029] Figure 5 is a schematic cross-sectional view of an extruded component;

[0030] Figure 6 It is a schematic diagram of the structure of the grinding component;

[0031] Figure 7 is a schematic diagram of the structure of the guide rail;

[0032] Figure 8 It is the structural state diagram of the turntable;

[0033] Fig. 9 The process flow chart of the polishing device for friction and wear specimens for textile crochet needles;

[0034] Fig.10 This is the wear profile measurement diagram;

[0035] Fig.11 Measure 3D images for wear profile;

[0036] Fig.12 is the contour map of point 1;

[0037] Fig.13 is the contour map of point 2;

[0038] Fig.14 This is the contour diagram of point 3.

[0039] 1. Support frame; 2. Driving member; 3. Turntable; 4. Clamping assembly; 5. Textile hook; 6. Extrusion assembly; 7. Grinding assembly; 8. Negative pressure assembly; 9. Guide rail; 31. Placement slot; 32. Pipette; 41. Lower clamping block; 42. Upper clamping block; 43. Spring; 61. Injection molding machine; 62. Driving member; 63. Auger; 64. Injection molding tube; 65. Feeding tube; 71. Lower grinding member; 72. Upper grinding member; 73. Grinding block; 8 1. Negative pressure bin; 82. Negative pressure pipe; 91. Feeding section; 92. Injection molding section; 93. Grinding section; 94. Negative pressure section; 95. Transition section; 411. Slide rail; 412. Fixed groove a; 413. Placement block a; 414. Slot a; 415. Liquid suction hole; 416. Liquid outlet channel; 421. Fixed groove b; 422. Placement block b; 423. Slot a; 424. Guide rod; 425. Liquid injection pipe; 426. Liquid injection channel. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings.

[0041] Embodiment 1

[0042] like Figures 1 to 8 As shown, a friction and wear sample polishing device for textile crochet hooks includes a support frame 1, a driving member 2 and a turntable 3 driven by the driving member 2, the turntable 3 is provided with a plurality of placement grooves 31, the placement grooves 31 are provided with a clamping assembly 4 for fixing the textile crochet hook 5, the upper end of the turntable 3 is provided with an extrusion assembly 6 for extruding a fixing agent, the upper end of the turntable 3 is provided with a grinding assembly 7 for grinding the textile crochet hook 5, the lower end of the turntable 3 is provided with a negative pressure assembly 8 for sucking out the fixing agent, and the turntable 3 is provided with a guide rail 9 for controlling the clamping and releasing of the clamping assembly 4.

[0043] It is worth mentioning here that a clamping assembly 4 for fixing the textile crochet hook 5 is arranged on the placement groove 31, a fixing groove a412 for placing the textile crochet hook 5 is opened on the lower clamping block 41, and a fixing groove b421 corresponding to the fixing groove a412 is opened at the lower end of the upper clamping block 42, the fixing agent is heated by the injection molding machine 61, the auger 63 is driven by the driving member 62 to rotate and extrude the fixing agent, the fixing agent is injected into the injection tube 425 through the injection molding tube 64, and flows into the fixing groove a412 and the fixing groove b421 through the injection channel 426, and the textile crochet hook 5 is fixed by the cooling and solidified fixing agent, so that the clamping assembly can fix crochet hooks of various shapes.

[0044] like Figure 3As shown, the clamping assembly 4 includes a lower clamping block 41 arranged in the placement groove 31 and an upper clamping block 42 slidably arranged on the lower clamping block 41, the rear end of the lower clamping block 41 is provided with a slide rail 411, a spring 43 is provided between the upper clamping block 42 and the slide rail 411, a fixed groove a412 for placing the textile crochet hook 5 is provided on the lower clamping block 41, a placement block a413 is provided in the fixed groove a412, a slot a414 for the textile crochet hook 5 to pass through is provided at the front end of the fixed groove a412, a liquid suction hole 415 is provided at the rear end of the lower clamping block 41, a liquid outlet channel 416 is provided between the liquid suction hole 415 and the fixed groove a412, and heating elements are provided in both the lower clamping block 41 and the upper clamping block 42.

[0045] In this example, the fixing groove a412 is provided so that the clamping assembly 4 can clamp textile crochet hooks 5 of various shapes. The spring 43 is provided so that the upper clamping block 42 can be reset after being pressed down. The liquid suction hole 415 and the liquid outlet channel 416 are provided so that the fixing agent can be sucked out from the liquid suction hole 415 and the liquid outlet channel 416 to the liquid suction tube 32, and then enter the negative pressure tube 82 through the liquid suction tube 32. The placement block a413 can limit the textile crochet hook 5 to prevent it from tilting. The groove a414 is only for the textile crochet hook 5 to pass through, and the fixing agent will not overflow from there.

[0046] like Figure 4 As shown, a fixing groove b421 corresponding to the fixing groove a412 is provided at the lower end of the upper clamping block 42, a placing block b422 is provided in the fixing groove b421, a slot a423 for the textile crochet needle 5 to pass through is provided at the front end of the fixing groove b421, a guide rod 424 and an injection tube 425 are provided on the upper clamping block 42, and an injection channel 426 is provided between the injection tube 425 and the fixing groove b421.

[0047] In this example, by setting the fixing groove b421, the clamping assembly 4 can clamp the textile crochet hook 5 of various shapes, and the placing block b422 can limit the textile crochet hook 5 to prevent it from tilting. The slot a423 is only for the textile crochet hook 5 to pass through, and the fixing agent will not overflow from it.

[0048] like Figure 5 As shown, the extrusion assembly 6 includes an injection molding machine 61, a driving member 62 arranged in the injection molding machine, and an auger 63 driven by the driving member 62. An injection molding tube 64 is arranged at the lower end of the injection molding machine 61, a feed pipe 65 is arranged on the side wall of the injection molding machine 61, and a feed bin is arranged at the upper end of the feed pipe 65.

[0049] The fixing agent in the injection molding machine 61 is polyurethane.

[0050] In this example, polyurethane is selected as the fixing agent because of its good plasticity and high hardness after solidification, which prevents the textile crochet needle 5 from shaking during polishing.

[0051] like Figure 6 As shown, the grinding assembly 7 includes a lower grinding piece 71 , an upper grinding piece 72 and a grinding robot, and a plurality of grinding blocks 73 are disposed on the lower grinding piece 71 and the upper grinding piece 72 .

[0052] like Figure 2 As shown, the negative pressure assembly 8 includes a negative pressure chamber 81 and a negative pressure tube 82 slidably disposed on the upper end of the negative pressure chamber 81 .

[0053] like Figure 7 As shown, a feeding section 91 , an injection section 92 , a grinding section 93 , a negative pressure section 94 and a transition section 95 are sequentially arranged on the guide rail 9 .

[0054] like Figure 2 As shown, a plurality of suction tubes 32 corresponding to the suction holes 415 are provided at the lower end of the turntable 3 .

[0055] Embodiment 2

[0056] As shown in Figure 1 to Figure 2, a method for preparing a friction and wear specimen for a textile crochet needle, using a friction and wear specimen polishing device for a textile crochet needle, comprises the following steps:

[0057] a. Material selection process, according to the service conditions of textile crochet 5, select the material as T10 steel;

[0058] In this example, the advantages of choosing T10 steel are good machinability and easy source; but it has low hardenability, average wear resistance and large quenching deformation.

[0059] b stamping process, by a stamping machine to stamp the textile crochet 5, and by a polishing machine to grind the textile crochet 5;

[0060] c. Polishing process, the textile crochet needle 5 is placed in the placement groove 31 by a robot, and the upper clamping block 42 is pressed down by the guide rail 9 to fit tightly with the lower clamping block 41, and the fixing agent is heated by the injection molding machine 61, and the auger 63 is driven by the driving member 62 to rotate to extrude the fixing agent, and the fixing agent is injected into the injection tube 425 through the injection tube 64, and flows into the fixing groove a412 and the fixing groove b421 through the injection channel 426, and the textile crochet needle 5 is fixed by the cooling and solidified fixing agent, and the surface of the textile crochet needle 5 is polished and polished by the polishing component 7, and the fixing agent is heated by the lower clamping block 41 and the upper clamping block 42 to melt it, and the fixing agent is sucked out from the suction tube 32 through the negative pressure tube 82, and stored in the negative pressure bin 81, and the textile crochet needle 5 is taken out by the robot and sent to the next station.

[0061] In this example, the grinding + polishing method is used to improve the smoothness of the working part of the hook, so that the roughness reaches Ra0.1μm.

[0062] d. Superhardening treatment process, by placing the textile crochet needle 5 into a nitriding furnace, isothermally nitriding it, and denitriding it 2 hours before the end of nitriding, the denitriding temperature is increased to 550°C, and it is cooled in the nitriding furnace, and then the nitrided sample is lightly ground and polished.

[0063] In this example, in order to ensure the uniformity of nitriding, the sample is suspended and centered to ensure the uniform thickness of the nitriding white layer. The nitriding sample is lightly ground and polished to maintain a roughness of Ra0.1μm.

[0064] e. Simulation of working conditions: According to the actual working conditions of textile crochet hooks, the test uses a friction and wear testing machine, the reciprocating MDW-02, to destroy the crochet hooks through accelerated testing to simulate fatigue damage after long-term use.

[0065] In this example, the wear profile of the test specimen was measured as follows: Fig.10 As shown, the 3D image is Fig.11 As shown, the contours of point 1, point 2, and point 3 measured on the surface are as follows: Fig.12 , Fig.13 , Fig.14 As shown, the textile crochet needle sample prepared by the method has small wear and low wear depth in the physical simulation textile crochet needle friction and wear test.

[0066] Of course, in the present technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0067] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art under the technical guidance of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A polishing device for friction and wear samples for textile hook needles, comprising a support frame (1), a driving member (2) and a rotating disk (3) driven by the driving member (2), characterized in that: The turntable (3) is provided with a plurality of placement grooves (31), and a clamping assembly (4) for fixing a textile crochet needle (5) is arranged on the placement groove (31); an extrusion assembly (6) for extruding a fixing agent is arranged on the upper end of the turntable (3); a grinding assembly (7) for grinding the textile crochet needle (5) is arranged on the upper end of the turntable (3); a negative pressure assembly (8) for sucking out the fixing agent is arranged on the lower end of the turntable (3); and a guide rail (9) for controlling the clamping and loosening of the clamping assembly (4) is arranged on the turntable (3).

2. A friction and wear sample polishing device for textile crochet needles according to claim 1, characterized in that: The clamping assembly (4) comprises a lower clamping block (41) arranged in a placement groove (31) and an upper clamping block (42) slidably arranged on the lower clamping block (41); a slide rail (411) is arranged at the rear end of the lower clamping block (41); a spring (43) is arranged between the upper clamping block (42) and the slide rail (411); a fixing groove a (412) for placing a textile crochet needle (5) is provided on the lower clamping block (41); A placement block a (413) is arranged in the fixed groove a (412); a slot a (414) for a weaving crochet needle (5) to pass through is provided at the front end of the fixed groove a (412); a liquid suction hole (415) is provided at the rear end of the lower clamping block (41); a liquid outlet channel (416) is provided between the liquid suction hole (415) and the fixed groove a (412); and a heating element is provided in both the lower clamping block (41) and the upper clamping block (42).

3. A friction and wear sample polishing device for textile crochet needles according to claim 2, characterized in that: A fixing groove b (421) corresponding to the fixing groove a (412) is provided at the lower end of the upper clamping block (42); a placement block b (422) is arranged in the fixing groove b (421); a slot a (423) for a weaving crochet needle (5) to pass through is provided at the front end of the fixing groove b (421); a guide rod (424) and a liquid injection tube (425) are provided on the upper clamping block (42); and a liquid injection channel (426) is provided between the liquid injection tube (425) and the fixing groove b (421).

4. A friction and wear sample polishing device for textile crochet needles according to claim 1, characterized in that: The extrusion assembly (6) comprises an injection molding machine (61), a driving member (62) arranged in the injection molding machine, and an auger (63) driven by the driving member (62); an injection molding tube (64) is arranged at the lower end of the injection molding machine (61); a feed pipe (65) is arranged on the side wall of the injection molding machine (61); and a feed bin is arranged at the upper end of the feed pipe (65).

5. A friction and wear sample polishing device for textile crochet needles according to claim 5, characterized in that: The fixing agent in the extruder (61) is polyurethane.

6. A friction and wear sample polishing device for textile crochet needles according to claim 1, characterized in that: The grinding assembly (7) comprises a lower grinding piece (71), an upper grinding piece (72) and a grinding robot, and a plurality of grinding blocks (73) are arranged on the lower grinding piece (71) and the upper grinding piece (72).

7. A friction and wear sample polishing device for textile crochet needles according to claim 1, characterized in that: The negative pressure assembly (8) comprises a negative pressure chamber (81) and a negative pressure tube (82) slidably arranged at the upper end of the negative pressure chamber (81).

8. A friction and wear sample polishing device for textile crochet needles according to claim 3, characterized in that: The guide rail (9) is provided with a feeding section (91), an injection section (92), a polishing section (93), a negative pressure section (94) and a transition section (95) in sequence.

9. A friction and wear sample polishing device for textile crochet needles according to claim 2, characterized in that: The lower end of the rotating disk (3) is provided with a plurality of liquid suction tubes (32) corresponding to the liquid suction holes (415).

10. The method for preparing a friction and wear sample for a textile crochet needle according to claim 1, using the polishing device for a friction and wear sample for a textile crochet needle according to claim 1, comprising the following steps: a material selection process, according to the textile crochet (5) service conditions, select the material T10 steel; b stamping process, by a stamping machine to stamp the textile crochet (5) and by a polishing machine to grind the textile crochet (5); c. Polishing process, the textile hook (5) is placed in the placement groove (31) by a manipulator, the upper clamping block (42) is pressed down by the guide rail (9) to fit tightly with the lower clamping block (41), the fixing agent is heated by the injection molding machine (61), the auger (63) is driven by the driving member (62) to rotate to extrude the fixing agent, the fixing agent is injected into the injection pipe (425) through the injection pipe (64), and flows into the fixing groove a (41) through the injection channel (426). 2) in the fixing groove b (421), the textile crochet needle (5) is fixed by the cooling and solidifying fixing agent, the surface of the textile crochet needle (5) is polished and ground by the polishing assembly (7), the fixing agent is heated and melted by the lower clamping block (41) and the upper clamping block (42), and the fixing agent is sucked out from the suction tube (32) through the negative pressure tube (82) and stored in the negative pressure bin (81), and the textile crochet needle (5) is taken out by the robot and sent to the next station. d. Superhardening and toughening treatment process, by placing the textile crochet (5) into a nitriding furnace, isothermally nitriding it, and denitriding it 2 hours before the end of nitriding, the denitriding temperature is increased to 550°C, cooling in the nitriding furnace, and then lightly grinding and polishing the nitrided sample. e. Simulation of working conditions: According to the actual working conditions of textile crochet hooks, the test uses a friction and wear testing machine, the reciprocating MDW-02, to destroy the crochet hooks through accelerated testing to simulate fatigue damage after long-term use.

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