CN114918293A - Automatic notching device and method for circular collecting pipe - Google Patents

Abstract

The invention discloses an automatic notching device for a round collecting pipe, which comprises a rack and a notching die, wherein the notching die is fixed on the rack, the notching die also comprises a feeding unit, a discharging unit, a collecting unit, a workbench and a material frame, the workbench is fixed on the rack, the material frame for accommodating the collecting pipe is fixed on the workbench, the feeding unit and the discharging unit are respectively arranged on two sides of the material frame, the discharging unit is arranged on the workbench, the collecting unit is fixed at the bottom of the rack, the feeding unit is used for pushing the collecting pipe to the notching die, the discharging unit is used for pushing the collecting pipe to the discharging unit, and the discharging unit is used for pushing the processed collecting pipe to the collecting unit. The collecting pipe punching device has the advantages that the material unit, the material returning unit, the discharging unit and the collecting unit are matched with each other, the machining position of the positioning notch can be accurately determined when the collecting pipe is subjected to punching machining, the machining size error of the positioning notch is small, and meanwhile the collecting of the collecting pipe can be rapidly realized by matching the discharging unit and the collecting unit.

Description

A device and method for automatic grooving of circular header

technical field

The invention relates to the technical field of stamping of condenser core headers, in particular to an automatic grooving device and method for circular headers.

Background technique

The condenser is generally used in the air conditioning device of the ordinary household car with the radiator. The refrigerant flows from the left to the right through the hydraulic inlet plate to the multiple headers in the core. Moving forward, it flows out through the supercooled drying bottle, and the entire route is S-shaped, which is called parallel flow. As shown in FIG. 1 , the first processing step is to punch the header 8 , that is, to punch the positioning notch 81 . By designing the positioning notch, the positioning notch 81 is used as the reference operation when making the next process. In the prior art, in the process of manufacturing a positioning defect, the header is put into the positioning pins of the mold model, which has low positioning accuracy, and at the same time, it is not easy to collect the processed header.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the above-mentioned problems, and design an automatic grooving device for circular headers. Including a frame and a punching die, the punching die is fixed on the frame, and also includes a feeding unit, a feeding unit, a discharging unit, a collecting unit, a workbench, and a material rack, and the frame is fixed with A workbench, on which a material rack for accommodating the headers is fixed, a feeding unit and a feeding unit are respectively installed on both sides of the material rack, a discharging unit is installed on the workbench, and the machine A collection unit is fixed at the bottom of the rack, the feeding unit is used to push the header to the punching die, the material withdrawal unit is used to push the header to the discharging unit, and the discharging unit pushes the processing Good header to the collection unit.

Further, the feeding unit includes a feeding cylinder, a first cylinder sliding seat, a positioning seat and a positioning pin, a first sliding groove is provided on the worktable, and the first cylinder sliding seat is connected to the first sliding seat. The slot is slidably arranged, the first cylinder sliding seat is fixedly connected with a feeding cylinder, the slot punching die is fixed with a positioning seat, the positioning seat is provided with a through hole, and the through hole is provided with a positioning pin, so The positioning pin is fixedly connected with the positioning seat.

Further, the material-returning unit includes a material-returning cylinder, a guide column, a fixed seat, a second cylinder slide seat and a second chute, a fixed seat is fixed on the frame, and a second sliding seat is fixed on the fixed seat. The second chute is slidably provided with a second cylinder sliding seat, a material return cylinder is fixed on the second cylinder sliding seat, a guide column is fixed on the telescopic end of the second cylinder sliding seat, and the positioning seat is A guide hole is opened on the upper part, and the guide hole is used for accommodating the guide post.

Further, the discharging unit includes a discharging cylinder, a third cylinder sliding seat and a third sliding groove, a third cylinder sliding seat is slidably arranged on the first sliding groove, and a third cylinder sliding seat is provided on the third cylinder sliding seat. A third chute, a push block is slidably arranged on the third chute, a discharge cylinder is fixed on the worktable, the push block is fixed on the telescopic end of the discharge cylinder, and the end of the push block has Arc-shaped grooves that can be adapted to headers.

Further, the collection unit includes a storage box, the storage box is fixed on the bottom of the rack, the rack is provided with a blanking hole, and the storage box is placed below the blanking hole.

Further, it also includes a limit unit, the limit unit includes a limit cylinder and an inclined seat, an inclined seat is fixed on the worktable, and a limit cylinder is fixed on the inclined seat, and the limit cylinder is along the Table tilt setting.

Further, a first baffle and a second baffle are fixed on the worktable, a guide rod is passed through the first baffle and the second baffle, and a third baffle is also passed through the guide rod. The baffle plate and the material rack, the third baffle plate can move along the guide rod, and the third baffle plate is arranged between the first baffle plate and the second baffle plate.

Further, the material rack includes a left support plate and a right support plate, the left support plate and the right support plate are longitudinally provided with a feed channel for accommodating a header, and the upper size of the feed channel is larger than the size of the Dimensions below the feed channel.

Further, the third baffle plate and the guide rod are fixed by a locking assembly, the left support plate and the guide rod are fixed by a locking assembly, and the locking assembly includes a locking slider and a locking bolt, the locking slider passes through the guide rod, and the locking bolt passes through the locking slider.

Also disclosed is an automatic grooving method for a circular header, comprising:

Step 1: the limit cylinder is started and abuts at the second header from bottom to top along the feed channel;

Step 2: The feed cylinder starts and pushes the lowermost header in the material rack to pass through the material rack and set outside the locating pin, and at the same time abut on the locating seat;

Step 3: The punching die performs positioning and missing processing on the header;

Step 4: The material return cylinder is activated, and the material return cylinder drives the guide column to push the header back into the material rack;

Step 5: The discharge cylinder drives the push block to enter the collector tube into the storage box along the discharge hole;

Step 6: Retract the push rod of the limit cylinder;

Step 7: Repeat steps 1-6 until all the headers in the material rack are processed.

An automatic grooving device for a circular header made by using the technical solution of the present invention has the beneficial effects that the feeding unit pushes a header at the bottom of the material rack out of the material rack to the working area of the punching die, and the The punching die punches the header, and the header after punching returns to the initial position in the material rack under the action of the feeding unit, and the discharging unit pushes the header to the space between the collection unit and the worktable. In the discharge channel, the processed header is collected by the collection unit;

The feeding unit, the discharging unit, the discharging unit and the collecting unit cooperate with each other. When the header is flushed, the processing position of the missing positioning can be accurately determined, and the processing size error of the missing positioning is small. At the same time, the discharging unit and the collecting unit The cooperation can quickly realize the collection of the header.

Description of drawings

Fig. 1 is the structural representation of the header of the present invention;

Figure 2 is a perspective view of a circular header automatic grooving device according to the present invention;

3 is a perspective view of a first perspective view of a workbench part of a circular header automatic grooving device according to the present invention;

4 is a perspective view of a second perspective view of a workbench part of a circular header automatic grooving device according to the present invention;

Fig. 5 is the structural representation of the feeding unit and the discharging unit of the present invention;

Fig. 6 is the structural representation of the material-returning unit of the present invention;

Fig. 7 is the structure schematic diagram of the positioning seat of the present invention;

8 is a schematic structural diagram of a positioning seat and a guide rod of the present invention;

9 is a schematic structural diagram of the discharging unit and the collecting unit of the present invention;

In the figure, 1, rack; 11, workbench; 12, material rack; 121, left support plate; 122, right support plate; 123, feeding channel; 13, first baffle; 14, second baffle; 15. Third baffle; 16. Guide rod; 17. Locking assembly; 171. Locking slider; 172. Locking bolt; 2. Punching die; 3. Feeding unit; 31. Feeding cylinder; 32 , through hole; 33, positioning seat; 34, positioning pin; 35, first chute; 36, first cylinder slide; 37, guide hole; 4, return unit; 41, return cylinder; 42, guide column ;43, the second cylinder slide; 44, the second chute; 45, the fixed seat; 5, the discharge unit; 51, the discharge cylinder; 52, the third cylinder slide; 53, the third chute; 54, Push block; 6. Collection unit; 61. Storage box; 62. Blanking hole; 7. Limiting unit; 71. Limiting cylinder; 72. Inclined seat;

Detailed ways

The present invention will be specifically described below with reference to the accompanying drawings. An automatic grooving device for a circular header, as shown in Figures 1 to 4, includes a frame 1 and a grooving die 2, and the grooving die 2 is fixed on the The rack 1 also includes a feeding unit 3, a discharging unit 4, a discharging unit 5, a collecting unit 6, a workbench 11, and a material rack 12. A workbench 11 is fixed on the frame 1, and the workbench 11 A material rack 12 for accommodating collecting pipes is fixed on the material rack 12 , a feeding unit 3 and a discharging unit 4 are respectively installed on both sides of the material rack 12 , the discharging unit 5 is installed on the worktable 11 , and the rack 1. A collection unit 6 is fixed at the bottom, the feed unit 3 is used to push the header to the punching die 2, the return unit 4 is used to push the header to the discharge unit 5, and the The discharging unit 5 pushes the processed header to the collecting unit 6 . The headers are stacked in the material rack 12, the feeding unit 3 pushes a header at the bottom of the material rack 12 out of the material rack 12 to the working area of the punching die 2, and the punching die 2 flushes the header. The collecting pipe after grooving returns to the initial position in the material rack 12 under the action of the discharging unit 4, and the discharging unit 5 pushes the collecting pipe into the discharging channel between the collecting unit 6 and the workbench 11. , the processed headers are collected by the collection unit 6 .

A first baffle plate 13 and a second baffle plate 14 are fixed on the worktable 11 , and guide rods 16 pass through the first baffle plate 13 and the second baffle plate 14 , and the guide rods 16 also pass through. A third baffle 15 and a material rack 12 are provided, the third baffle 15 can move along the guide rod 16, and the third baffle 15 is arranged on the first baffle 13 and the second baffle between the plates 14 . A feeding unit 3 is arranged between the first baffle 13 and the third baffle, a material rack 12 is arranged between the second baffle 14 and the third baffle 15, and a discharging unit 5 is arranged outside the second baffle 14. The first baffle 13 and the second baffle 14 play the role of fixing the guide rod 16 and the material rack 12 , and the guide rod 16 plays the role of guiding the material rack 12 and the second baffle 14 . The material rack 12 includes a left support plate 121 and a right support plate 122. The left support plate 121 and the right support plate 122 are longitudinally provided with a feed channel 123 for accommodating a header, above the feed channel 123 The size is larger than the size below the feed channel 123 . Due to the different lengths of the headers, the left support plate 121 can move along the guide rod 16 in order to adapt to the grooving process for the headers of different lengths. Can move along the guide rod 16 . The material racks 128 on both sides have a symmetrical structure, and the whole is conical. The feed channel 123 of the material rack 12 is wide at the top and narrow at the bottom. The feed channel 123 at the upper part of the material rack 12 accommodates multiple rows of headers, and the narrow feed channel 123 at the bottom of the material rack 12 can only accommodate one row of headers. The material rack 12 is wide at the top and narrow at the bottom. While ensuring that the material rack 12 can accommodate as many headers as possible, it also ensures that the headers 8 continuously drop from the feeding channel 123 to the unit that can be fed. 3 launch positions. Only one header 8 can be dropped from the feed channel 123 to the working position at a time.

As shown in FIG. 1 , the third baffle 15 and the guide rod 16 are fixed by the locking assembly 17 , and the left support plate 121 and the guide rod 16 are fixed by the locking assembly 17 , so The locking assembly 17 includes a locking slide 171 and a locking bolt 172 , the locking slide 171 passes through the guide rod 16 , and the locking bolt 172 passes through the locking slide 171 . After the third baffle 15 and the left support plate 121 are moved to appropriate positions, there are locking assemblies 17 to fix their positions respectively. The cross-section of the locking slider 171 is V-shaped. During installation, the locking slider 171 follows the guide rod. 16 slides until it touches the side wall of the third baffle 15 and the left support plate 121. By installing locking bolts on the locking slider 171 to change the locking degree with the guide rod 16, the opening degree of the locking slider 171 becomes smaller. .

As shown in FIG. 5 and FIG. 6 , the feeding unit 3 includes a feeding cylinder 31, a first cylinder sliding seat 36, a positioning seat 33 and a positioning pin 34, and a first chute 35 is provided on the working table 11, The first cylinder sliding seat 36 is slidably arranged with the first sliding groove 35 , the first cylinder sliding seat 36 is fixedly connected with the feeding cylinder 31 , the punching die 2 is fixed with a positioning seat 33 , and the The positioning seat 33 is provided with a through hole 32 , and a positioning pin 34 is arranged in the through hole 32 , and the positioning pin 34 is fixedly connected with the positioning seat 33 . The bottoms of the third baffle 15, the material rack 12 and the second baffle 14 are provided with rectangular holes through which the headers can pass. After the feed cylinder 31 is activated, the feed cylinder 31 can extend into the left support plate 121 and the left support plate 121 along the rectangular tube. In the space enclosed by the right support plate, the feed cylinder 31 pushes the lowermost header, and the header moves along the rectangular hole to the punching die 2 for processing of the positioning notch 81 . The header is a hollow structure, the locating pin 34 is a solid pin, the feed cylinder 31 pushes the header to the outside of the locating pin 34 and abuts on the locating seat 33, at this time the position of the header is determined by limit. The punching die 2 is in the prior art, and is a kind of die that can realize punching processing. The upper die seat of the punching die 2 is moved to the lower die seat under the action of the press, and the sidewall of the collecting pipe is processed with a lack of positioning. , the upper surface of the positioning seat 33 has a gap, the gap is used to adapt to the downward movement distance of the upper die seat during the punching process.

Due to the difference in the lengths of the headers, the lengths of the headers that need to be pushed out by the feed cylinder 31 are different. A first sliding block and a first cylinder sliding seat 36 are provided on the workbench 11, so that the feeding cylinder 31 is working The fixed position on the table 11 can be changed. For the working conditions exceeding the range of the feeding cylinder 31 , there is no need to equip the feeding cylinders 31 of various types, just change the position of the feeding cylinder 31 on the worktable 11 .

As shown in FIGS. 5-8 , the discharging unit 4 includes a discharging cylinder 41 , a guide column 42 , a fixing seat 45 , a second cylinder sliding seat 43 and a second sliding groove 44 , and the frame 1 is fixed with a A fixing seat 45, a second chute 44 is arranged on the fixing seat 45, a second cylinder sliding seat 43 is slidably arranged on the second sliding slot 44, and a material return cylinder 41 is fixed on the second cylinder sliding seat 43 The telescopic end of the second cylinder sliding seat 43 is fixed with a guide column 42 , and the positioning seat 33 is provided with a guide hole 37 , and the guide hole 37 is used for accommodating the guide column 42 . The processed header is returned to the material rack 12 along the rectangular hole under the action of the return unit 4. Specifically, after the return cylinder 41 is activated, the second cylinder slide 43 moves along the second chute 44 to return the material. When the telescopic rod of the cylinder 41 is extended, the guide column 42 is extended at the same time, and the guide column 42 is in contact with the collecting pipe to push the collecting pipe back into the material rack 12 . The fixed seat 45 plays the role of fixing the return cylinder 41, the second cylinder sliding seat 43 and the second sliding groove 44 play a guiding role for the movement of the guide column 42, the guide column 42 extends into the positioning seat 33, and the punching groove is completed. After that, push the header back.

As shown in FIG. 9 , the discharging unit 5 includes a discharging cylinder 51 , a third cylinder sliding seat 52 and a third sliding groove 53 . The first sliding groove 35 is slidably provided with a third cylinder sliding seat 52 , so The third cylinder sliding seat 52 is provided with a third chute 53, the third chute 53 is slidably provided with a push block 54, a discharge cylinder 51 is fixed on the worktable 11, and the push block 54 is fixed on the The discharge cylinder 51 has a telescopic end, and the end of the push block 54 has an arc-shaped groove that can be matched with the header 8 . The collecting pipe returned to the material rack 12 enters the collecting unit 6 under the action of the discharging cylinder 51 and the push block 54. The end of the push block 54 is provided with an arc-shaped groove, and its contact area with the collecting pipe is larger. Larger and more stable when the header is pushed out. The third cylinder sliding seat 52 and the third sliding groove 53 make the frictional force during the movement of the push block 54 smaller. The header is located in the material rack 12 so as to be in contact with the third cylinder sliding seat 52, and the third cylinder sliding seat 52 also serves as a function of limiting the position of the header. The third cylinder sliding seat 52 can move along the first sliding groove 35 to change the working position of the discharging cylinder.

The collection unit 6 includes a storage box 61 , the storage box 61 is fixed on the bottom of the rack 1 , the rack 1 is provided with a blanking hole 62 , and the storage box 61 is placed in the blanking hole 62 below. The discharge hole is longitudinally arranged along the worktable 11 and is arranged on the side of the third cylinder slide 52. The collecting pipe pushed out by the discharge unit 5 enters the storage box 61 along the discharge hole for storage, and the storage box 61 is stored along the rack 1. The inclined setting is convenient for the collection tube to fall under the action of gravity. The third cylinder sliding seat 52 is disposed adjacent to the discharge hole, so that the discharge cylinder 51 and the push block 54 can be dropped into the storage box 61 along the workbench 11 without pushing the header for too much distance, which is easy to operate. The inner wall of the storage box 61 is pasted with a soft rubber pad, which can reduce unnecessary bumps when falling and avoid scratching the collector tube.

It also includes a limit unit 7, the limit unit 7 includes a limit cylinder 71 and an inclined seat 72, an inclined seat 72 is fixed on the worktable 11, and a limit cylinder 71 is fixed on the inclined seat 72, and the limit The position cylinder 71 is inclined along the worktable 11 . Only one header can enter the working state at a time. Before each punching process, the push rod of the limiting cylinder 71 extends and pushes against the second header from bottom to top in the material rack 12. The width of the lower part of 123 can only accommodate one header. When one header is held up by the limiting cylinder 71, only one header can be flushed until the header enters the storage box 61. Afterwards, the push rod of the limiting cylinder 71 is retracted, and the next header falls on the third cylinder slide 52 to be processed. Further, the limiting cylinder 71 protrudes again against another header. , According to this scheme, only one header is dropped on the third cylinder for punching and groove processing at a time, and it can be carried out continuously. A rubber layer is installed on the top of the limiting cylinder 71, which is in contact with the tube body of the header to reduce unnecessary imprints. PVC plates can also be installed on the surface of each cylinder to prevent the iron parts from colliding with the aluminum parts at the end of the header and leaving scratches.

Since the feed channel 123 is wide at the top and narrow at the bottom, a jamming phenomenon may occur at the intersection of the wide feed channel 123 and the narrow feed channel 123, and a vibrating cylinder is fixed on the second support plate. The vibrating cylinder continuously vibrates, which can promote the downward movement of the collecting pipe and avoid the occurrence of stuck phenomenon.

The specific usage is as follows:

Step 1: the limiting cylinder 71 is activated and abuts against the second header from bottom to top along the feed channel 123;

Step 2: The feeding cylinder 31 starts and pushes the lowermost collector tube in the material rack 12 to pass through the material rack 12 and set outside the positioning pin 34, and at the same time abut against the positioning seat 33;

Step 3: The punching die 2 performs positioning and missing processing on the header;

Step 4: The material-returning cylinder 41 is activated, and the material-returning cylinder 41 drives the guide column 42 to push the header back into the material rack 12;

Step 5: The discharge cylinder 51 drives the push block 54 to enter the collector pipe into the storage box 61 along the discharge hole;

Step 6: The push rod of the limit cylinder 71 is retracted;

Step 7: Repeat Step 1 to Step 6 until all the headers in the material rack 12 are processed.

The above technical solutions only represent the preferred technical solutions of the technical solutions of the present invention, and some changes that those skilled in the art may make to some parts of them all reflect the principles of the present invention and fall within the protection scope of the present invention.

Claims (10)

1. A circular header automatic punching device, comprising a frame (1) and a punching die (2), and the punching die (2) is fixed on the frame (1), characterized in that, also It includes a feeding unit (3), a discharging unit (4), a discharging unit (5), a collecting unit (6), a workbench (11), and a material rack (12), and the rack (1) is fixed with a A workbench (11), a material rack (12) for accommodating a header is fixed on the workbench (11), and a feeding unit (3) and a feeding unit are respectively installed on both sides of the material rack (12) (4), a discharge unit (5) is installed on the workbench (11), a collection unit (6) is fixed at the bottom of the frame (1), and the feed unit (3) is used to push the current collection Pipe to the punching die (2), the unloading unit (4) is used to push the header to the discharging unit (5), and the discharging unit (5) pushes the processed header (8) to the collection unit (6). 2 . The automatic grooving device for circular headers according to claim 1 , wherein the feeding unit ( 3 ) comprises a feeding cylinder ( 31 ), a first cylinder sliding seat ( 36 ), a positioning A seat (33) and a positioning pin (34), a first chute (35) is provided on the worktable (11), and the first cylinder sliding seat (36) slides with the first chute (35) A feeding cylinder (31) is fixedly connected to the first cylinder sliding seat (36), a positioning seat (33) is fixed on the punching die (2), and a through hole is provided on the positioning seat (33). A hole (32), a positioning pin (34) is arranged in the through hole (32), and the positioning pin (34) is fixedly connected with the positioning seat (33). 3 . The automatic grooving device for circular headers according to claim 1 , wherein the material-returning unit (4) comprises a material-returning cylinder (41), a guide column (42), a fixing seat (45). 4 . ), a second cylinder sliding seat (43) and a second sliding groove (44), a fixing seat (45) is fixed on the frame (1), and a second sliding groove (45) is arranged on the fixing seat (45). 44), the second chute (44) is slidably provided with a second cylinder slide (43), the second cylinder slide (43) is fixed with a return cylinder (41), and the second cylinder slides A guide column (42) is fixed on the telescopic end of the seat (43), and a guide hole (37) is formed on the positioning seat (33), and the guide hole (37) is used for accommodating the guide column (42). 4. An automatic grooving device for circular headers according to claim 2, characterized in that the discharging unit (5) comprises a discharging cylinder (51), a third cylinder sliding seat (52) and a first Three sliding grooves (53), the first sliding groove (35) is slidably provided with a third cylinder sliding seat (52), and the third cylinder sliding seat (52) is provided with a third sliding groove (53), A push block (54) is slidably arranged on the third chute (53), a discharge cylinder (51) is fixed on the worktable (11), and the push block (54) is fixed on the discharge cylinder (51) A telescopic end, the end of the push block (54) has an arc-shaped groove that can be matched with the header (8). 5 . The automatic grooving device for circular headers according to claim 1 , wherein the collecting unit ( 6 ) comprises a storage box ( 61 ), and the storage box ( 61 ) is fixed to the machine. 6 . At the bottom of the rack (1), a blanking hole (62) is opened on the rack (1), and the storage box (61) is placed under the blanking hole (62). 6 . The automatic grooving device for a circular header according to claim 1 , further comprising a limit unit ( 7 ), the limit unit ( 7 ) comprising a limit cylinder ( 71 ) and an inclined A seat (71), an inclined seat (72) is fixed on the worktable (11), a limiting cylinder (71) is fixed on the inclined seat (72), and the limiting cylinder (71) is along the worktable (11) Inclined setting. 7. The automatic grooving device for circular headers according to claim 1, wherein a first baffle plate (13) and a second baffle plate (14) are fixed on the worktable (11), A guide rod (16) is passed through the first baffle (13) and the second baffle (14), and a third baffle (15) and a material rack are also passed through the guide rod (16). (12), the third baffle (15) can move along the guide rod (16), and the third baffle (15) is arranged on the first baffle (13) and the second baffle between the plates (14). 8 . The automatic grooving device for circular headers according to claim 8 , wherein the material rack ( 12 ) comprises a left support plate ( 121 ) and a right support plate ( 122 ), and the left support plate ( 122 ). The plate (121) and the right support plate (122) are longitudinally provided with a feed channel (123) for accommodating a header, and the upper dimension of the feed channel (123) is larger than the lower dimension of the feed channel (123) . 9 . The automatic grooving device for circular headers according to claim 7 , wherein a locking assembly ( 17 ) is used between the third baffle plate ( 15 ) and the guide rod ( 16 ). 10 . The left support plate (121) and the guide rod (16) are fixed by a locking assembly (17), and the locking assembly (17) includes a locking slider (171) and a locking bolt ( 172), the locking slider (171) passes through the guide rod (16), and the locking bolt (172) passes through the locking slider (171). 10. An automatic grooving method for a circular header, characterized in that, applied to the automatic grooving device for a circular header according to any one of claims 1-9, comprising: Step 1: the limiting cylinder (71) is started and abuts at the second header (8) from bottom to top along the feed channel (123); Step 2: The feeding cylinder (31) is activated to push the lowermost collecting tube (8) in the material rack (12) to pass through the material rack (12) and set on the outside of the positioning pin (34). Abut on the positioning seat (33); Step 3: The grooving die (2) processes the header (8) for positioning and missing (81); Step 4: The material-returning cylinder (41) is activated, and the material-returning cylinder (41) drives the guide column (42) to push the header (8) back into the material rack (12); Step 5: The discharge cylinder (51) drives the push block (54) to move the header (8) into the storage box (61) along the discharge hole; Step 6: The push rod of the limit cylinder (71) is retracted; Step 7: Repeat Step 1-Step 6 until all the headers (8) in the material rack (12) are processed.

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