A needle plate knitting needle of a horizontal knitting machine and a bending device thereof

Abstract

The present application relates to a needle plate knitting needle of a horizontal knitting machine and a bending device thereof, and relates to the field of knitting needles, and includes a frame; a squeezing mechanism, which is arranged on the frame and used to flatten the needle blanks; a storage rack, which is arranged on the frame and has a vertical groove adapted to the needle blanks, and the vertical groove is used to temporarily stack and store a plurality of needle blanks; a conveyor belt, which is arranged on one side of the squeezing mechanism and is used to drive the needle blanks to move along one side of the squeezing mechanism, and at one end of the conveyor belt, the lower end of the storage rack abuts against the transmission belt, and the conveyor belt has a plurality of receiving grooves for accommodating the needle blanks along the conveying direction, and the depth of the receiving grooves is adapted to the thickness of the needle blanks, and the receiving grooves are all arranged along the width direction of the conveyor belt; a push-pull mechanism, which is arranged on the frame and is used to push and pull the needle blanks to move between the conveyor belt and the squeezing mechanism. The present application can automatically realize the simultaneous bending of a plurality of needle blanks, and group processing, which has the effect of improving processing efficiency.

Description

Technical Field

[0001] The invention relates to the field of knitting needles, in particular to a needle plate knitting needle of a flat knitting machine and a bending device thereof. Background Art

[0002] The flat knitting machine is a common forming knitting machine. It can knit flat or three-dimensional garment panels with a certain shape on the machine. The needle bed of the flat knitting machine is flat, and the needle plate needles are the needles installed on the needle bed of the flat knitting machine.

[0003] In the related art, a needle hook is provided at one end of the needle plate in the length direction of the knitting needle, and a needle butt is provided at the other end. During processing, the end of the needle blank that needs to be processed with the needle hook is generally flattened. The process is called "bending". Currently, the bending process of the needle blank is generally performed by manually placing the needle blank in a pressing mechanism for bending. In the process of bending the needle blank, the thickness and width of the bent part will change. Currently, some machines can automatically push the needle blanks into the pressing mechanism one by one for bending.

[0004] With respect to the above-mentioned related technologies, the inventors have found that the current processing efficiency of bending needles of the needle plate one by one is low. Summary of the invention

[0005] In order to improve processing efficiency, the present application provides a needle plate needle of a flat knitting machine and a bending device thereof.

[0006] In the first aspect, the present application provides a needle bending device for a needle plate of a flat knitting machine, which adopts the following technical solution:

[0007] A needle bending device for a needle plate of a horizontal knitting machine comprises a frame; an extrusion mechanism, which is arranged on the frame and is used to flatten needle blanks; a storage rack, which is arranged on the frame and is provided with vertical grooves adapted to the needle blanks, and the vertical grooves are used to stack and temporarily store a plurality of needle blanks; a conveyor belt, which is arranged on one side of the extrusion mechanism and is used to drive the needle blanks to move along one side of the extrusion mechanism, at one end of the conveyor belt, the lower end of the storage rack abuts against the transmission belt, and the conveyor belt is provided with a plurality of accommodating grooves for accommodating the needle blanks along the conveying direction, the depth of the accommodating grooves is adapted to the thickness of the needle blanks, and the accommodating grooves are all arranged along the width direction of the conveyor belt; a push-pull mechanism, which is arranged on the frame and is used to push and pull the needle blanks to move between the conveyor belt and the extrusion mechanism.

[0008] By adopting the above technical solution, when the transmission belt rotates until the receiving groove moves to the bottom of the storage rack, the needle blanks at the bottom of the storage rack automatically fall into the receiving groove under the action of gravity. During the rotation of the conveyor belt, the needle blanks fall one by one into the receiving grooves at different positions of the transmission belt. Then the conveyor belt pauses, and the push-pull mechanism pushes the needle blanks aligned with the extrusion mechanism into the extrusion mechanism for extrusion at the same time, thereby achieving simultaneous bending of multiple needle blanks, which is beneficial to improving processing efficiency.

[0009] Optionally, the extrusion mechanism includes a reciprocating screw with symmetry at both ends, both ends of the reciprocating screw are threadedly connected with an extrusion block, and the two extrusion blocks are slidably connected to the frame along the vertical direction.

[0010] By adopting the above technical solution, the reciprocating screw can drive the two extrusion blocks to move reciprocatingly in the direction of approaching or moving away from each other. When approaching each other, the needle blank is flattened. The structure is simple and the control is convenient.

[0011] Optionally, the reciprocating screw is coaxially fixedly connected to a first worm gear, the frame is rotatably connected to a first transmission shaft, the first transmission shaft is coaxially fixedly connected to a half gear and a first worm wheel meshing with the first worm gear, one end of the conveyor belt is fixedly connected to a spur gear matching the half gear, and the spur gear can drive the conveyor belt to rotate intermittently as the half gear rotates.

[0012] By adopting the above technical solution, during the rotation of the reciprocating screw, the first transmission shaft and the half gear are driven to rotate via the first worm and the first worm wheel, and then the intermittent engagement of the half gear and the spur gear is utilized to drive the conveyor belt to rotate intermittently, so that when the needle blank is pushed between the two extrusion blocks and flattened, the transmission belt automatically enters a stopped state, and the structure is simple and the operation is convenient.

[0013] Optionally, the push-pull mechanism includes a push-pull plate, which is slidably connected to the frame, the reciprocating screw is coaxially fixedly connected to the second worm, the frame is rotatably connected to the second transmission shaft, one end of the second transmission shaft is connected to the second worm wheel meshing with the second worm, and the other end is coaxially fixedly connected to a cylindrical cam, the push-pull plate is fixedly provided with a protrusion that cooperates with the cylindrical cam, the protrusion can push the push-pull plate to reciprocate as the cylindrical cam rotates, and the push-pull plate is provided with a pulling member for driving the needle blank away from the extrusion block.

[0014] By adopting the above technical solution, the reciprocating screw rotates through the second worm and the second worm gear to drive the second transmission shaft and the cylindrical cam to rotate, and then drives the push-pull plate to achieve reciprocating movement through the protrusion, and cooperates with the pull-back member to realize the pushing and pulling of the needle blank. The structure is simple and the matching accuracy is high.

[0015] Optionally, the pull-back member includes an electromagnet, and the electromagnet is located on a side of the push-pull plate close to the extrusion block.

[0016] By adopting the above technical solution, when the push-pull plate is away from the extrusion mechanism, the electromagnet is energized to suck the needle blank back to just above the conveyor belt, so that the push-pull plate pulls back the needle blank, and the structure is simple and easy to control.

[0017] Optionally, the upper end surface of the electromagnet is at the same height as the bottom of the accommodating groove.

[0018] By adopting the above technical solution, the electromagnet is in surface contact with the lower end surface of the needle blank outside the conveyor belt, and the magnetic attraction effect of the magnetic force on the needle blank is better, which is conducive to ensuring the stability of the electromagnet pulling back the needle blank.

[0019] Optionally, a material storage basket is provided at one end of the frame away from the material storage rack, and the upper end of the material storage basket is open to receive the needle blanks dropped from the conveyor belt.

[0020] By adopting the above technical solution, the needle blanks dropped from the end of the conveyor belt away from the storage rack are automatically collected in the storage basket, which is convenient for users to collect regularly. The structure is simple and the effect is good.

[0021] In the second aspect, the present application provides a needle plate needle for a horizontal knitting machine, comprising a needle body, wherein a needle hook is provided at one end of the needle body in the length direction, and a needle butt is provided at the other end. A bending portion is provided at a position of the needle body near the needle hook, and a needle tongue is hingedly connected to the bending portion. The needle tongue is provided with a groove adapted to the end of the needle hook, and the bending portion is provided with a tongue seat groove adapted to the needle tongue.

[0022] By adopting the above technical solution, the needle tongue is arranged at the bending part of the needle body, and the groove is used to improve the fitting effect between the needle tongue and the end of the needle hook. The tongue seat groove is formed by the fitting effect between the needle tongue and the needle body, so that the needle tongue is not easy to move outside the hinged rotation direction, which is beneficial to improving the service life.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. When the transmission belt rotates until the receiving groove moves to the bottom of the storage rack, the needle blanks at the bottom of the storage rack automatically fall into the receiving groove under the action of gravity. During the rotation of the conveyor belt, the needle blanks fall into the receiving grooves at different positions of the transmission belt one by one. Then the conveyor belt pauses, and the push-pull mechanism pushes the needle blanks aligned with the extrusion mechanism into the extrusion mechanism for extrusion at the same time, thereby realizing the simultaneous bending of multiple needle blanks, which is conducive to improving processing efficiency;

[0025] 2. During the rotation of the reciprocating screw, the first worm and the first worm wheel drive the first transmission shaft and the half gear to rotate, and then the intermittent meshing of the half gear and the spur gear drives the conveyor belt to rotate intermittently, so that when the needle blank is pushed between the two extrusion blocks and flattened, the transmission belt automatically stops rotating, and the structure is simple and easy to operate;

[0026] 3. The reciprocating screw rotates through the second worm and the second worm wheel to drive the second transmission shaft and the cylindrical cam to rotate, and then drives the push-pull plate to achieve reciprocating movement through the convex block, and cooperates with the pull-back member to achieve the push-pull of the needle blank. The structure is simple and the matching accuracy is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of a needle plate needle bending device of a flat knitting machine in the present application.

[0028] Figure 2 It is a schematic cross-sectional structure intended to highlight the extrusion mechanism.

[0029] Figure 3 It is a cross-sectional structural diagram intended to highlight the push-pull mechanism.

[0030] Figure 4 It is a structural schematic diagram of a needle plate knitting needle of a flat knitting machine in the present application.

[0031] Explanation of the reference numerals in the accompanying drawings: 100, needle blank; 1, frame; 2, extrusion mechanism; 21, reciprocating screw; 211, first worm; 212, second worm; 22, extrusion block; 3, material storage rack; 31, vertical slot; 4, conveyor belt; 41, receiving slot; 42, spur gear; 5, push-pull mechanism; 51, push-pull plate; 511, electromagnet; 52, bump; 53, cylindrical cam; 531, cam slot; 6, first transmission shaft; 61, first worm gear; 62, half gear; 7, second transmission shaft; 71, second worm gear; 8, material storage basket; 9, needle body; 91, needle hook; 92, needle butt; 93, bending portion; 931, tongue seat slot; 94, needle tongue; 941, groove. DETAILED DESCRIPTION

[0032] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0033] The embodiment of the present application discloses a needle bending device for a needle plate of a flat knitting machine.

[0034] Reference Figure 1 A needle bending device for a needle plate of a horizontal knitting machine comprises a frame 1, a material storage rack 3 is installed on the upper end of the frame 1, and the material storage rack 3 can store a plurality of needle blanks 100 to be flattened; a conveyor belt 4 is installed below the material storage rack 3, and the needle blanks 100 in the material storage rack 3 are moved out of the material storage rack 3 one by one during the rotation of the conveyor belt 4; the frame 1 is also equipped with an extrusion mechanism 2 and a push-pull mechanism 5, and the conveyor belt 4 drives a plurality of needle blanks 100 to between the extrusion mechanism 2 and the push-pull mechanism 5, and then stops rotating, and the push-pull mechanism 5 simultaneously pushes a plurality of needle blanks 100 into the extrusion mechanism 2 for flattening and then pulls them back to the conveyor belt 4, and the above process is repeated to perform the bending process of the needle blanks 100.

[0035] Reference Figure 1 The material storage rack 3 is fixedly installed on the frame 1. The material storage rack 3 is provided with a vertical groove 31. The shape of the vertical groove 31 is adapted to the middle position of the length direction of the needle blank 100. The user stacks several needle blanks 100 to be processed up and down and places them in the vertical groove 31. The needle blanks 100 fall to the lower end of the vertical groove 31 under the action of gravity, and can only move in the vertical direction under the action of the vertical groove 31.

[0036] Reference Figure 1The lower end of the storage rack 3 is in contact with the upper belt surface of one end of the conveyor belt 4. The surface of the conveyor belt 4 is provided with a plurality of accommodating grooves 41 at equal intervals along its conveying direction. The accommodating grooves 41 are all arranged along the width direction of the conveyor belt 4. When the conveyor belt 4 rotates, the accommodating grooves 41 pass under the storage rack 3 one by one; the needle blanks 100 at the bottom in the vertical groove 31 fall into the accommodating groove 41 just below the vertical groove 31 under the action of gravity.

[0037] Reference Figure 1 The depth of the accommodating groove 41 is adapted to the thickness of the needle blank 100. The needle blank 100 falling into the accommodating groove 41 is free from the restriction of the vertical groove 31 and moves with the conveyor belt 4. Moreover, one accommodating groove 41 can only accommodate one needle blank 100, and the rotation of the conveyor belt 4 will not be affected by the falling of the next needle blank 100. During the rotation of the conveyor belt 4, the needle blanks 100 in the vertical groove 31 fall onto the conveyor belt 4 one by one, and are embedded in the accommodating grooves 41 one by one and transported by the conveyor belt 4 to the end away from the storage rack 3.

[0038] Reference Figure 1 Every eight needle blanks 100 are set as a group. Whenever a group of needle blanks 100 moves between the push-pull mechanism 5 and the extrusion mechanism 2, the conveyor belt 4 needs to temporarily stop rotating to facilitate the push-pull mechanism 5 to push and pull the needle blanks 100 toward the extrusion mechanism 2 along the width direction of the conveyor belt 4. At the same time, the extrusion mechanism 2 flattens the ends of the approaching needle blanks 100. In this embodiment, the downward pressure of the extrusion mechanism 2 is linked with the rotation of the conveyor belt 4.

[0039] Reference Figure 1 and Figure 2 The extrusion mechanism 2 includes a reciprocating screw 21, which is vertically arranged and rotatably connected to the frame 1 at both ends. The frame 1 is fixedly installed with a motor, and the output shaft of the motor is coaxially fixedly connected to the reciprocating screw 21. During processing, the user starts the motor to control the reciprocating screw 21 to rotate in one direction without stopping; the lower end of the reciprocating screw 21 is coaxially fixedly installed with a first worm 211, and the first worm 211 rotates synchronously with the reciprocating screw 21.

[0040] Reference Figure 1 and Figure 2 The frame 1 is equipped with a first transmission shaft 6, which is horizontally arranged along the width direction of the conveyor belt 4 and rotatably connected to the frame 1 at the middle position in the length direction. A first worm wheel 61 meshing with the first worm 211 is coaxially installed at one end of the first transmission shaft 6. The first worm wheel 61 rotates synchronously with the first transmission shaft 6 under the drive of the first worm 211.

[0041] Reference Figure 1 and Figure 2A half gear 62 is fixedly installed at one end of the first transmission shaft 6 away from the first worm gear 61, and the half gear 62 rotates synchronously with the first transmission shaft 6. A spur gear 42 that can mesh with the half gear 62 is installed at one end of the conveyor belt 4 close to the storage rack 3. When the teeth of the half gear 62 rotate to a direction close to the spur gear 42, the half gear 62 meshes with the spur gear 42, and then drives the conveyor belt 4 to rotate through the spur gear 42, thereby realizing the conveyor belt 4 to transport the needle blanks 100; when the teeth of the half gear 62 are away from the spur gear 42, the conveyor belt 4 loses power and stops rotating. At this time, a group of needle blanks 100 move to between the push-pull mechanism 5 and the extrusion mechanism 2.

[0042] Reference Figure 3 The push-pull mechanism 5 includes a push-pull plate 51, the lower end surface of which is slidably connected to the frame 1. The frame 1 is provided with a strip groove along the width direction of the conveyor belt 4 below the push-pull plate 51. A protrusion 52 is fixedly installed at the lower end of the push-pull plate 51. The protrusion 52 is embedded in the strip groove and can only move along the length direction of the strip groove under the restriction of the strip groove, so that the push-pull plate 51 can only move along the length direction of the strip groove, that is, in the direction close to or away from the extrusion mechanism 2. When approaching the extrusion mechanism 2, the push-pull plate 51 pushes a group of needle blanks 100 toward the extrusion mechanism 2.

[0043] Reference Figure 3 In this embodiment, a linkage is also arranged between the push-pull mechanism 5 and the extrusion mechanism 2. The push-pull mechanism 5 automatically starts after the conveyor belt 4 stops rotating to push a group of needle blanks 100 between the push-pull mechanism 5 and the extrusion mechanism 2 toward the extrusion mechanism 2.

[0044] Reference Figure 3 A second worm 212 is coaxially fixedly installed at the lower end of the reciprocating screw 21, and the second worm 212 rotates synchronously with the reciprocating screw 21. The frame 1 is installed with a second transmission shaft 7 arranged along the width direction of the conveyor belt 4. The middle position of the second transmission shaft 7 in the length direction is rotatably connected to the frame 1, and a second worm wheel 71 meshing with the second worm 212 is coaxially installed at one end of the second transmission shaft 7. The second worm wheel 71 rotates synchronously with the second transmission shaft 7 under the drive of the second worm 212.

[0045] Reference Figure 3 A cylindrical cam 53 is installed at one end of the second transmission shaft 7 away from the second worm gear 71. The cylindrical cam 53 rotates synchronously with the second transmission shaft 7. A cam groove 531 is opened on the rotating surface of the cylindrical cam 53. The end of the protrusion 52 away from the push-pull plate 51 passes through the strip groove and is embedded in the cam groove 531 of the cylindrical cam 53. Part of the cam groove 531 is closer to the extrusion mechanism 2, and the other part is farther from the extrusion mechanism 2. As the cylindrical cam 53 rotates, the protrusion 52 is cyclically embedded in different parts of the cam groove 531.

[0046] Reference Figure 3When the conveyor belt 4 rotates to transport the needle blank 100, the protrusion 52 is embedded in the part of the cam groove 531 that is farther away from the extrusion mechanism 2. At this time, the push-pull plate 51 is in a state far away from the extrusion mechanism 2, and the push-pull plate 51 will not hinder the needle blank 100 from moving with the conveyor belt 4 to between the push-pull plate 51 and the extrusion mechanism 2; after the conveyor belt 4 stops, the protrusion 52 is embedded in the part of the cam groove 531 that is closer to the extrusion mechanism 2, thereby driving the push-pull plate 51 to approach the extrusion mechanism 2. At this time, the push-pull plate 51 presses against the end of the needle blank 100 away from the extrusion mechanism 2, and at the same time pushes a group of needle blanks 100 toward the extrusion mechanism 2.

[0047] Reference Figure 1 and Figure 2 The two ends of the reciprocating screw 21 are symmetrically arranged, and the extrusion mechanism 2 also includes extrusion blocks 22 respectively connected to the two ends of the reciprocating screw 21 by threads. The two extrusion blocks 22 are both slidably connected to the frame 1 in the vertical direction. During the rotation of the reciprocating screw 21, the two extrusion blocks 22 reciprocate in the vertical direction under the action of the threads. When a group of needle blanks 100 pushed by the push-pull plate 51 moves away from one end of the push-pull plate 51 to between the two extrusion blocks 22, the two extrusion blocks 22 approach each other, flatten the end of the needle blank 100, and realize the bending process. Since the upper and lower extrusion blocks 22 act simultaneously to extrude the needle blank 100, the precision is higher than that of unidirectional extrusion.

[0048] Reference Figure 2 and Figure 3 As the reciprocating screw 21 continues to rotate, the two extrusion blocks 22 begin to move away from each other, and a pull-back member is installed on the side of the push-pull plate 51 close to the needle blank 100. At this time, the push-pull plate 51 needs to use the pull-back member to pull the needle blank 100 back to just above the conveyor belt 4.

[0049] Reference Figure 3 The pull-back member is an electromagnet 511, and the pull-back member is installed on the side of the push-pull plate 51 close to the extrusion mechanism 2. When the conveyor belt 4 drives the needle blank 100 to move and the push-pull plate 51 pushes the needle blank 100 toward the extrusion mechanism 2, the electromagnet 511 is in a power-off and demagnetized state, which saves energy and is not easy to affect the position of the needle blank 100 on the conveyor belt 4. The push-pull plate 51 relies on the contact between the push-pull plate 51 and the end of the needle blank 100 to push the needle blank 100 into the extrusion mechanism 2 for flattening; after flattening, the electromagnet 511 enters a power-on and magnetized state, and uses magnetic force to pull the needle blank 100 back.

[0050] Reference Figure 3The electromagnet 511 is in the shape of a boss protruding from the surface of the push-pull plate 51, and the upper surface of the electromagnet 511 is a horizontal plane, and the upper surface of the electromagnet 511 is at the same height as the bottom of the accommodating groove 41, that is, the upper surface of the electromagnet 511 contacts the lower surface of the needle blank 100, and the contact area between the electromagnet 511 and the needle blank 100 is large. When the electromagnet 511 generates magnetic force, the magnetic force can ensure the pulling effect on the needle blank 100, and the structure is simple and the effect is good.

[0051] Reference Figure 2 and Figure 3 After the needle blank 100 is pulled back by the electromagnet 511, the teeth of the half gear 62 rotate one circle and re-engage with the spur gear 42, so that the conveyor belt 4 rotates again, and the group of needle blanks 100 that have completed the bending are transported in the direction away from the storage rack 3, and a new group of needle blanks 100 are moved between the push-pull plate 51 and the extrusion mechanism 2. Then the conveyor belt 4 stops again, and the above operation is repeated for automatic processing. Since each processing is a group of eight needle blanks 100 that are bent at the same time, the processing efficiency is high.

[0052] The implementation principle of the embodiment 1 of the present application is as follows: the motor drives the reciprocating screw 21 to rotate, controls the two extrusion blocks 22 to circulate in the vertical direction, and drives the conveyor belt 4 to rotate intermittently through the first worm 211, the first worm gear 61, the half gear 62 and the spur gear 42. At the same time, the push-pull plate 51 is driven to reciprocate in the width direction of the conveyor belt 4 through the second worm 212, the second worm gear 71, the cylindrical cam 53 and the convex block 52. When the conveyor belt 4 rotates, the needle blanks 100 in the storage rack 3 fall into the receiving groove 41 one by one due to gravity. When a group of needle blanks 100 are When the blank 100 moves between the push plate and the extrusion mechanism 2, the conveyor belt 4 stops rotating, and at the same time, the push-pull plate 51 pushes a group of needle blanks 100 into between the two extrusion blocks 22 at the same time. The two pressing blocks are now close to each other and simultaneously squeeze the ends of a group of needle blanks 100. Then, the push-pull plate 51 uses the electromagnet 511 to simultaneously pull a group of needle blanks 100 back to the top of the conveyor belt 4. Then, the conveyor belt 4 stops rotating again, and the above operation is repeated for automatic processing. Since each processing is a group of eight needle blanks 100 that are bent simultaneously, the processing efficiency is relatively high.

[0053] The embodiment of the present application also discloses a needle plate needle of a flat knitting machine.

[0054] Reference Figure 4A needle plate knitting needle of a horizontal knitting machine includes a needle body 9, one end of the needle body 9 in the length direction is provided with a needle hook 91, which is used to pull the weaving thread and pass through the cloth. The needle body 9 is provided with a bending portion 93 near the needle hook 91, and the bending portion 93 is hinged with a needle tongue 94. The needle tongue 94 is provided with a groove 941 adapted to the end of the needle hook 91. When the needle tongue 94 contacts the needle hook 91, the needle hook 91 is embedded in the groove 941, and the weaving thread is not easy to accidentally detach from the gap between the needle tongue 94 and the needle hook 91; the bending portion 93 is provided with a tongue seat groove 931 adapted to the needle tongue 94. When the needle tongue 94 is away from the needle hook 91, the needle tongue 94 is embedded in the tongue seat groove 931, and the fit with the needle body 9 is higher, and it is not easy to affect the movement of the weaving thread. The structure is simple and the effect is good.

[0055] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A needle bending device for a needle plate of a flat knitting machine, characterized in that: include: Rack (1); An extrusion mechanism (2) is arranged on the frame (1) and is used to flatten the needle blank (100); A material storage rack (3) is arranged on the frame (1), and a vertical slot (31) adapted to the needle blanks (100) is provided on the material storage rack (3), and the vertical slot (31) is used to stack and temporarily store a plurality of needle blanks (100); A conveyor belt (4) is arranged on one side of the extrusion mechanism (2) and is used to drive the needle blank (100) to move along the side of the extrusion mechanism (2). At one end of the conveyor belt (4), the lower end of the storage rack (3) abuts against the transmission belt. The conveyor belt (4) is provided with a plurality of receiving grooves (41) for receiving the needle blank (100) along the conveying direction. The depth of the receiving grooves (41) is adapted to the thickness of the needle blank (100). The receiving grooves (41) are all arranged along the width direction of the conveyor belt (4); A push-pull mechanism (5) is arranged on the frame (1) and is used to push and pull the needle blank (100) to move between the conveyor belt (4) and the extrusion mechanism (2); The extrusion mechanism (2) comprises a reciprocating screw (21) with symmetric ends, both ends of the reciprocating screw (21) are threadedly connected with an extrusion block (22), and the two extrusion blocks (22) are slidably connected to the frame (1) in a vertical direction; The reciprocating screw (21) is coaxially fixedly connected to a first worm (211); the frame (1) is rotatably connected to a first transmission shaft (6); the first transmission shaft (6) is coaxially fixedly connected to a half gear (62) and a first worm wheel (61) meshing with the first worm (211); one end of the conveyor belt (4) is fixedly connected to a spur gear (42) matched with the half gear (62); the spur gear (42) can drive the conveyor belt (4) to rotate intermittently as the half gear (62) rotates; The push-pull mechanism (5) comprises a push-pull plate (51), the push-pull plate (51) is slidably connected to the frame (1), the reciprocating screw (21) is coaxially fixedly connected to the second worm (212), the frame (1) is rotatably connected to the second transmission shaft (7), one end of the second transmission shaft (7) is connected to the second worm wheel (71) meshing with the second worm (212), and the other end is coaxially fixedly connected to the cylindrical cam (53), the push-pull plate (51) is fixedly provided with a convex block (52) cooperating with the cylindrical cam (53), the convex block (52) rotates with the cylindrical cam (53) to push the push-pull plate (51) to reciprocate, and the push-pull plate (51) is provided with a pull-back member for driving the needle blank (100) away from the extrusion block (22); The pull-back member comprises an electromagnet (511), and the electromagnet (511) is located on a side of the push-pull plate (51) close to the extrusion block (22); The upper end surface of the electromagnet (511) and the bottom of the accommodating groove (41) are located at the same height; A material storage basket (8) is provided at one end of the frame (1) away from the material storage rack (3); the upper end of the material storage basket (8) is open and is used to receive the needle blanks (100) dropped from the conveyor belt (4).

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