Fish-eye needle slitting quick-change device

Abstract

The utility model discloses a kind of fish eye needle slitting quick switching devices, including long strip parallel fish eye needle and be used for the slitting device of fish eye needle slitting, the slitting device is composed of cutter fixing seat, upper tool rest, lower tool rest and base, the lower bottom surface of cutter fixing seat and the upper surface of base are concave respectively, form the placement slot for placing upper tool rest, lower tool rest, lower pressing pad is provided on cutter fixing seat, vertical through cutter fixing seat is provided in the median position of cutter fixing seat Cutter mounting hole, upper tool rest median position has the installation through-hole corresponding with cutter mounting hole, the bottom surface of lower pressing pad is equipped with cutter, cutter exposed part respectively passes through cutter mounting hole and installation through-hole, elastic component is provided between cutter fixing seat and lower tool rest, still be provided with positioning mechanism on the upper tool rest, and parallel fish eye needle sent by automatic feeder is inserted between upper tool rest, lower tool rest transversely.The utility model whole structure is simple and reasonable, practical and convenient.

Description

Technical Field

[0001] This utility model belongs to the field of parallel strip fisheye needle cutting technology, and relates to a quick-change device for fisheye needle cutting. Background Technology

[0002] A power module is a module composed of power electronic devices combined and encapsulated according to certain functions. It is an advanced hybrid integrated power component with IGBT (Insulated Gate Bipolar Transistor) as its core, consisting of a high-speed, low-power die (IGBT), optimized gate drive circuitry, and fast protection circuitry. The use of fisheye needles is a crucial step in semiconductor welding technology. Existing automated fisheye needle cutting equipment suffers from problems such as excessively large burrs on the cut, failing to meet process requirements, cumbersome replacement of worn-out cutters, and the inability to quickly change cutters for different products. This leads to insufficient fisheye needle supply during production and reduced automation efficiency.

[0003] To address this issue, a quick-change device for cutting fish-eye needles was designed to overcome the aforementioned problems. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a fisheye needle cutting and quick-change device that is simple and reasonable in structure, practical and convenient, and has high working efficiency.

[0005] This utility model is achieved through the following technical solution: a quick-change device for slicing fish-eye needles, comprising elongated parallel fish-eye needles and a slicing device for slicing the fish-eye needles. The slicing device consists of a cutter fixing seat, an upper cutter holder, a lower cutter holder, and a base arranged sequentially from top to bottom. The lower bottom surface of the cutter fixing seat and the upper surface of the base are respectively recessed to form placement grooves for placing the upper and lower cutter holders. The upper cutter holder is installed in the lower bottom surface of the cutter fixing seat and forms an integral part therewith, while the lower cutter holder is installed in the upper surface of the base and forms an integral part therewith. A lower pressure pad is provided on the upper surface of the cutter fixing seat. A vertically penetrating cutter mounting hole is provided in the center of the cutter fixing seat. A corresponding hole is provided in the center of the upper cutter holder. The cutter mounting hole corresponds to the mounting through hole. The bottom surface of the lower pressure pad is vertically inserted to install the cutter. The cutter part is exposed outside the lower pressure pad, and its exposed part passes through the cutter mounting hole and the mounting through hole respectively. An elastic component is provided between the cutter fixing seat and the lower cutter holder. A positioning mechanism is also provided on the upper cutter holder. A row of fisheye needles fed by an automatic feeder is horizontally inserted between the upper cutter holder and the lower cutter holder. By pressing the lower pressure pad, the positioning component and the cutter move downward. After being positioned by the positioning component, the cutter extends out of the mounting through hole and cuts off the waste material of the row of fisheye needles set between the upper cutter holder and the lower cutter holder. When there is no pressing, the cutter fixing seat returns to the initial height by the action of the elastic mechanism, and the cutter extends back into the mounting through hole.

[0006] Preferably, a positioning mechanism is provided between the automatic feeder and the base for initial positioning of the parallel fisheye needles conveyed by the automatic feeder. The positioning mechanism consists of a clamping block and a material guide block. The lower surface of the clamping block and the upper surface of the material guide block are recessed to form a channel for the parallel fisheye needles to pass through. A positioning pin through hole is provided in the middle of the clamping block, and a positioning pin is inserted into the positioning pin through hole to position the parallel fisheye needles placed between the clamping block and the material guide block. A first through hole is provided on opposite sides of the clamping block, and a corresponding second through hole is provided on opposite sides of the material guide block corresponding to the first through hole. A third through hole and a fourth through hole are provided on the other side of the material guide block near the base and on the side of the lower tool holder, respectively. The connection and fixation between the clamping block and the material guide block, and between the material guide block and the lower tool holder, are achieved by inserting connectors into the first through hole, the second through hole, the third through hole and the fourth through hole, respectively.

[0007] Preferably, the elastic component is a vertically arranged rectangular spring, with a spring hole opened at one of the four positive positions near the center of the upper tool holder, and a rectangular spring installed in each spring hole.

[0008] Preferably, the positioning component consists of a pressure pin block and a pinhole positioning pin. An elongated positioning pin hole is provided in the middle of the cutter fixing seat, which is on the same center line as the mounting through hole. A positioning pin hole corresponding to the positioning pin hole is provided on the upper blade holder. A pressure pin block is installed in the positioning pin hole through a connector. Multiple mounting through holes are provided on the pressure pin block. A pinhole positioning pin is fixedly installed at the lower part of the pressure pin block. The pinhole positioning pin extends into the positioning pin hole to position the parallel fisheye needles below the upper blade holder.

[0009] Preferably, a fifth through hole and a sixth through hole are respectively opened at the four corners of the upper surface of the upper blade holder and on the opposite side surfaces, and a seventh through hole and an eighth through hole are respectively opened on the upper surface and side surface of the cutter fixing seat, and fixed by a connector.

[0010] Preferably, four first linear bearings are vertically installed at the four oblique positions of the upper tool holder between the four fifth through holes, and four second linear bearings are vertically installed at the four corners of the lower tool holder. The four first and second linear bearings are arranged in a four-corner arrangement, and shaft retaining rings are installed at the upper and lower ends of the first and second linear bearings respectively. The base has assembly holes corresponding to the second linear bearings. A long strip-shaped upper and lower die positioning pin is inserted into each first and second linear bearing. The upper and lower ends of each lower die positioning pin are exposed outside the second linear bearing. The exposed upper part of each lower die positioning pin has an internal thread hole, which is connected and fixed to the fifth through hole through the internal thread hole. The exposed lower part extends into the corresponding round hole on the base.

[0011] Preferably, the upper and lower blade holders are each provided with a long, narrow protrusion of the same width as the upper and lower blade holders at the middle position of their upper surfaces. A row of fisheye needles is placed on the long, narrow protrusion. Symmetrical needle-side limiting blocks are installed on the left and right sides of the long, narrow protrusion via connectors. These two needle-side limiting blocks limit the row of fisheye needles, preventing them from shifting laterally during cutting. Clearance holes are provided on both sides of the long, narrow protrusion. A cleaning through-hole corresponding to the position of the clearance holes is provided on the lower blade holder. Waste material removed by the row of fisheye needles is discharged through the clearance holes and the cleaning through-hole.

[0012] Preferably, the parallel fisheye needles consist of multiple fisheye needles of the same size, with equal-length waste material between two adjacent fisheye needles. After the waste material is cut off by a cutter, it is discharged through the clearance hole and the cleaning through hole. The cut-off single fisheye needle is pushed forward along the feeding direction of the automatic feeder.

[0013] Preferably, the automatic feeder is controlled by a PLC system to ensure that the waste position of the parallel fisheye needles pushed forward each time is aligned with the falling position of the cutter.

[0014] Preferably, the connector consists of bolts, flat washers, and elastic washers.

[0015] The beneficial effects of this utility model are as follows: The fisheye needle quick-change device designed in this utility model uses a positioning mechanism, positioning components and needle side limiting pressure block to triple fix the strip-shaped parallel fisheye needles, preventing them from shifting when cutting waste materials, and improving cutting accuracy. Compared with the existing cutting knife mechanism, it has higher accuracy, is more convenient to replace, and has better consistency and uniformity. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the exploded structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of the present invention after installation; Figure 3 This is a schematic diagram of the positioning mechanism in this utility model; Figure 4 This is a cross-sectional view of the present invention after installation; Figure 5 The three-dimensional lower pressure pad of this utility model Figure 1 ; Figure 6 The three-dimensional lower pressure pad of this utility model Figure 2 ; Figure 7 The three-dimensional upper tool holder of this utility model Figure 1 ; Figure 8 The three-dimensional upper tool holder of this utility model Figure 2 ; Figure 9 The three-dimensional lower tool holder of this utility model Figure 1 ; Figure 10 The three-dimensional lower tool holder of this utility model Figure 2 ; Figure 11 This is a schematic diagram of the side-by-side fisheye needles in this utility model. Detailed Implementation

[0017] To enable those skilled in the art to more clearly understand the purpose, technical solution and advantages of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "horizontal", and "vertical" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] The present invention will now be described in detail with reference to the accompanying drawings: Figure 1-2 As shown, a quick-change device for slicing fish-eye needles includes elongated, side-by-side fish-eye needles 1 and a slicing device for slicing the fish-eye needles. The slicing device consists of a cutter fixing seat 2, an upper cutter holder 3, a lower cutter holder 4, and a base 5 arranged sequentially from top to bottom. The lower bottom surface of the cutter fixing seat 2 and the upper surface of the base 5 are respectively recessed to form placement grooves for placing the upper cutter holder 3 and the lower cutter holder 4. The upper cutter holder 3 is installed in the lower bottom surface of the cutter fixing seat 2 and is integrated with it. The lower cutter holder 4 is installed in the upper surface of the base 5 and is integrated with it. A lower pressure pad 6 is provided on the upper surface of the cutter fixing seat 2. A cutter mounting hole 7 is provided vertically through the cutter fixing seat 2 at the center position. A mounting through hole 8 corresponding to the cutter mounting hole 7 is provided at the center position of the upper cutter holder 3. A cutter 9 is vertically inserted into the bottom surface of the lower pressure pad 6. Part of the cutter 9 is exposed outside the lower pressure pad 6, and its exposed part passes through the cutter mounting hole 7 and the mounting through hole 8 respectively. An elastic component is provided between the cutter fixing seat 2 and the lower cutter holder 4. A positioning mechanism is also provided on the upper cutter holder 3. A row of fisheye needles 1 fed by an automatic feeder (not shown in the figure) is horizontally inserted between the upper cutter holder 3 and the lower cutter holder 4. By pressing the lower pressure pad 6, the positioning component and the cutter 9 are driven to move downward. After being positioned by the positioning component, the cutter 9 extends out of the mounting through hole and cuts off the waste material 10 of the row of fisheye needles 1 set between the upper cutter holder 3 and the lower cutter holder 4. The cutter fixing seat 2 returns to its initial height by the action of the elastic mechanism when no pressure is applied, and the cutter 9 extends back into the mounting through hole 8.

[0020] like Figure 3-4As shown, a positioning mechanism is provided between the automatic feeder and the base 5 for initial positioning of the parallel fisheye needles 1 conveyed by the automatic feeder. The positioning mechanism consists of a clamping block 11 and a material guide block 12. The lower surface of the clamping block 11 and the upper surface of the material guide block 12 are recessed to form a channel for the parallel fisheye needles 1 to pass through. A vertically penetrating positioning pin through hole 13 is provided in the middle of the clamping block 11. A positioning pin 14 is inserted into the positioning pin through hole 13 to position the parallel fisheye needles 1 placed between the clamping block 11 and the material guide block 12. The clamping block 11 has first through holes 15 on its opposite sides, and the material guide block 12 has corresponding second through holes 16 on its opposite sides corresponding to the first through holes 15. The second through holes are threaded holes. The material guide block 12 has third through holes 17 and fourth through holes 18 on the other side near the base 5 and on the side of the lower tool holder, respectively. The clamping block 11 and the material guide block 12, as well as the material guide block 12 and the lower tool holder 4, are connected and fixed by inserting the connectors into the first through holes 15, the second through holes 16, the third through holes 17 and the fourth through holes 18, respectively.

[0021] The elastic component consists of a vertically arranged rectangular spring 19 and an upper pressure mold positioning pin 20. A spring hole 21 is opened at one of the four positive positions near the center of the upper tool holder 3, and a rectangular spring 19 is installed in each spring hole 21.

[0022] The positioning component consists of a pressure pin block 23 and a pinhole positioning pin 24. A long strip-shaped positioning pin hole 25 is provided in the middle of the cutter fixing seat 2, which is on the same center line as the mounting through hole 8. A positioning pin hole 26 corresponding to the positioning pin hole 25 is provided on the upper cutter holder 3. The pressure pin block 23 is fixedly installed in the positioning pin hole 26 by a connector. Multiple mounting through holes 8 are provided on the pressure pin block 23. A pinhole positioning pin 24 is fixedly installed at the lower part of the pressure pin block 23. The pinhole positioning pin 24 extends into the positioning pin hole 26 to position the parallel fisheye needles 1 below the upper cutter holder 3.

[0023] like Figure 5-10 As shown, a fifth through hole 28 and a sixth through hole 29 are respectively opened at the four corners of the upper surface of the upper blade holder 3 and on the opposite side surfaces. The sixth through hole is a threaded hole. A corresponding seventh through hole 30 and an eighth through hole 31 are respectively opened on the upper surface and side surface of the cutter fixing seat 2, and are fixed by a connector.

[0024] The eighth through hole 31 is a waist-shaped hole 22. After the cutter fixing block is installed in place, the bolts (limiting screws) are inserted into the waist-shaped holes on both sides of the cutter fixing block to limit the range of vertical movement of the cutter fixing block and facilitate the overall installation.

[0025] Four first linear bearings 32 are vertically installed at the four oblique positions of the upper tool holder 3 between the four fifth through holes 28. Four second linear bearings 33 are vertically installed at the four corners of the lower tool holder. The four first linear bearings 32 and the two linear bearings 33 are arranged in a four-corner arrangement. Shaft retaining rings 34 are installed at the upper and lower ends of the first linear bearings 32 and the second linear bearings 33, respectively. The base 5 has assembly holes 36 corresponding to the second linear bearings 33. A long strip-shaped upper pressure mold positioning pin and a lower pressure mold positioning pin 35 are inserted into each first linear bearing 32 and the second linear bearing 33, respectively. The upper and lower ends of each lower pressure mold positioning pin 35 are exposed outside the second linear bearing 33. The exposed upper part has an internal thread hole 46, which is connected and fixed to the fifth through hole 28 through the internal thread hole 46. The exposed lower part extends into the corresponding assembly hole 36 on the base 5.

[0026] Both the upper blade holder 3 and the lower blade holder 4 are provided with a long strip-shaped boss 37 of the same width as the upper blade holder 3 and the lower blade holder 4. The long strip-shaped boss 37 is used to place the fish-eye needles 1 side by side. On the left and right sides of the long strip-shaped boss 37, symmetrical needle side limiting blocks 38 are respectively installed through connectors. The two needle side limiting blocks 38 are used to limit the side-by-side fish-eye needles 1 to prevent them from shifting left and right during cutting. The side sides of the long strip-shaped boss 37 are provided with clearance holes 39. The lower blade holder 4 is provided with a cleaning through hole 40 corresponding to the position of the clearance holes 39. The waste material 10 after being cut by the side-by-side fish-eye needles 1 is discharged through the clearance holes 39 and the cleaning through hole 40.

[0027] like Figure 11 As shown, the parallel fisheye needles 1 consist of multiple fisheye needles 41 of the same size. Between two adjacent fisheye needles 41 is a piece of waste material 10 of equal length. After the waste material 10 is cut off by a cutter, it is discharged through the clearance hole 39 and the cleaning through hole 40. The cut-off single fisheye needle 41 is pushed forward along the feeding direction of the automatic feeder. The automatic feeder is controlled by a PLC system to ensure that the position of the waste material 10 of each forward-pushed parallel fisheye needle 1 is directly opposite the falling position of the cutter 9. The connecting component consists of bolts 42, flat washers 43, and elastic washers 27.

[0028] The working principle of this utility model is as follows: The parallel strip-shaped fisheye needles to be cut are fed into the space between the material guide block and the clamping block by an automatic feeder outside the main mechanism. After coarse positioning, they continue to be conveyed forward for a certain distance and reach the cutter of the slitting device. At this time, the pressing mechanism outside the main mechanism presses the pressing pad down. During the pressing process, the cutting pad is first positioned with high precision by three pinhole positioning pins. Then, the cutting pad is lowered into place by the telescopic mechanism. The positioning pin on one side of the cutting pad is positioned with high precision again. Finally, the cutting pad is lowered to cut off a single fisheye needle. The waste material after the parallel fisheye needles are cut off is discharged through the clearance hole and the cleaning hole. The cut single fisheye needle is pushed forward along the feeding direction of the automatic feeder.

[0029] The cutter of this invention is inserted into the mounting hole of the cutter fixing block, and the lower pressure pad is pressed on top of the cutter and fixed with screws to complete the installation of the cutter. When replacing the cutter, simply remove the lower pressure pad for easy replacement, achieving a quick cutter replacement function. Maintenance is convenient and simple, improving work efficiency.

[0030] The specific embodiments described herein are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A quick-change device for cutting fish-eye needles, comprising elongated parallel fish-eye needles (1) and a cutting device for cutting the fish-eye needles, characterized in that: The slitting device consists of a cutter fixing seat (2), an upper cutter holder (3), a lower cutter holder (4), and a base (5) arranged sequentially from top to bottom. The bottom surface of the cutter fixing seat (2) and the top surface of the base (5) are respectively recessed to form placement slots for placing the upper cutter holder (3) and the lower cutter holder (4). The upper cutter holder (3) is installed in the bottom surface of the cutter fixing seat (2) and forms an integral part therewith. The lower cutter holder (4) is installed in the top surface of the base (5) and forms an integral part therewith. A lower pressure pad (6) is provided on the upper surface of the cutter fixing seat (2). A cutter mounting hole (7) is provided vertically through the cutter fixing seat at the center of the cutter fixing seat (2). A mounting through hole (8) corresponding to the cutter mounting hole (7) is provided at the center of the upper cutter holder (3). A cutter is vertically inserted into the bottom surface of the lower pressure pad (6). 9) The cutter (9) is partially exposed on the lower pressure pad (6). Its exposed part passes through the cutter mounting hole (7) and the mounting through hole (8) respectively. An elastic component is provided between the cutter fixing seat (2) and the lower cutter holder (4). A positioning mechanism is also provided on the upper cutter holder (3). A pair of fisheye needles (1) fed by an automatic feeder are inserted horizontally between the upper cutter holder (3) and the lower cutter holder (4). By pressing the lower pressure pad (6), the positioning component and the cutter (9) are driven to move downward. After being positioned by the positioning component, the cutter (9) extends out of the mounting through hole and cuts off the waste material (10) of the pair of fisheye needles (1) set between the upper cutter holder (3) and the lower cutter holder (4). The cutter fixing seat (2) returns to the initial height by the action of the elastic mechanism without being pressed, and the cutter (9) extends back into the mounting through hole (8).

2. The fisheye needle cutting quick-change device according to claim 1, characterized in that: A positioning mechanism is provided between the automatic feeder and the base (5) for initial positioning of the parallel fisheye needles (1) conveyed by the automatic feeder. The positioning mechanism consists of a clamping block (11) and a material guide block (12). The lower surface of the clamping block (11) and the upper surface of the material guide block (12) are recessed to form a channel for the parallel fisheye needles (1) to pass through. A vertically penetrating positioning pin through hole (13) is provided in the middle of the clamping block (11). A positioning pin (14) is inserted into the positioning pin through hole (13) to position the parallel fisheye needles (1) placed between the clamping block (11) and the material guide block (12). The clamping block (11) has a first through hole (15) on its opposite sides. The material guide block (12) has a corresponding second through hole (16) on its opposite sides corresponding to the first through hole (15). The material guide block (12) has a third through hole (17) and a fourth through hole (18) on the other side of the material guide block (12) near the base (5) and on the side of the lower tool holder (4). The clamping block (11) and the material guide block (12) and the lower tool holder (4) are connected and fixed by inserting the connector into the first through hole (15), the second through hole (16), the third through hole (17) and the fourth through hole (18).

3. The fisheye needle cutting and quick-change device according to claim 1, characterized in that: The elastic component is a vertically arranged rectangular spring (19). A spring hole (21) is opened at one of the four positive positions near the center of the upper tool holder (3), and a rectangular spring (19) is installed in each spring hole (21).

4. The fisheye needle cutting quick-change device according to claim 1, characterized in that: The positioning component consists of a pressure pin block (23) and a pinhole positioning pin (24). A long strip-shaped positioning pin hole (25) is provided in the middle of the cutter fixing seat (2) at the same center line as the mounting through hole (8). A positioning pin hole (26) corresponding to the positioning pin hole (25) is provided on the upper blade holder (3). The pressure pin block (23) is fixedly installed in the positioning pin hole (26) by a connector. Multiple mounting through holes (8) are provided on the pressure pin block (23). A pinhole positioning pin (24) is fixedly installed at the lower part of the pressure pin block (23). The pinhole positioning pin (24) extends into the positioning pin hole (26) to position the parallel fisheye needles (1) below the upper blade holder (3).

5. The fisheye needle cutting and quick-change device according to claim 4, characterized in that: The upper blade holder (3) has a fifth through hole (28) and a sixth through hole (29) respectively at the four corners of the upper surface and on the opposite side surfaces, and a seventh through hole (30) and an eighth through hole (31) respectively on the upper surface and side surface of the cutter fixing seat (2), which are fixed by the connector.

6. The fisheye needle cutting quick-change device according to claim 5, characterized in that: Four first linear bearings (32) are vertically installed between the four fifth through holes (28) of the upper tool holder (3) at four oblique positions. Four second linear bearings (33) are vertically installed at the four corners of the lower tool holder. The four first linear bearings (32) and the two linear bearings (33) are arranged in a four-corner arrangement. Shaft retaining rings (34) are installed at the upper and lower ends of the first linear bearings (32) and the second linear bearings (33). The base (5) has openings opposite to the second linear bearings (33). The corresponding assembly hole (36) is provided. A long strip upper mold positioning pin (20) and a lower mold positioning pin (35) are respectively inserted into each of the first linear bearing (32) and the second linear bearing (33). The upper and lower ends of each lower mold positioning pin (35) are exposed on the second linear bearing (33). The exposed part of the upper end is provided with an internal thread hole (46). The internal thread hole (46) is connected and fixed to the connector of the fifth through hole (28). The exposed part of the lower end extends into the corresponding assembly hole (36) on the base (5).

7. The fisheye needle cutting quick-change device according to claim 6, characterized in that: The upper blade holder (3) and the lower blade holder (4) are both provided with a long strip-shaped boss (37) of the same width as the upper blade holder and the lower blade holder. The long strip-shaped boss (37) is provided with a row of fish-eye needles (1). On the left and right sides of the long strip-shaped boss (37), symmetrical needle side limiting blocks (38) are installed respectively through connectors. The two needle side limiting blocks (38) are used to limit the row of fish-eye needles (1) to prevent them from shifting left and right during cutting. The long strip-shaped boss (37) is provided with clearance holes (39) on both sides. The lower blade holder (4) is provided with a cleaning through hole (40) corresponding to the position of the clearance hole (39). The waste material (10) after being cut by the row of fish-eye needles (1) is discharged through the clearance hole (39) and the cleaning through hole (40).

8. The fisheye needle cutting quick-change device according to claim 7, characterized in that: The parallel fisheye needles (1) consist of multiple fisheye needles (41) of the same size. Between two adjacent fisheye needles (41) is waste material (10) of equal length. After the waste material (10) is cut off by the cutter, the waste material (10) is discharged through the clearance hole (39) and the cleaning through hole (40). The cut single fisheye needle (41) is pushed forward along the feeding direction of the automatic feeder.

9. The fisheye needle cutting quick-change device according to claim 8, characterized in that: The automatic feeder is controlled by a PLC system to ensure that the waste material (10) of the parallel fisheye needles (1) pushed forward each time is aligned with the falling position of the cutter (9).

10. The fisheye needle cutting quick-change device according to claim 4, 5, 6, or 7, characterized in that: The connector consists of a bolt (42), a flat washer (43), and an elastic washer (27).

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