Alternating type feeding device and feeding method thereof

Abstract

The invention relates to the technical field of machining, in particular to an alternate feeding device and a feeding method thereof. Comprising stamping equipment and a feeding device connected to one side of the stamping equipment, the stamping equipment comprises a stamping head and a female die, the stamping head and the female die are correspondingly arranged, and the feeding device comprises a feeding mechanism workbench, a first feeding mechanism and a second feeding mechanism. The first feeding mechanism and the second feeding mechanism are arranged on the table top of the feeding mechanism workbench in a sliding mode, the first feeding mechanism and the second feeding mechanism are the same in structure and arranged in a mirror image mode, and the first feeding mechanism and the second feeding mechanism alternately clamp finished products to leave the stamping equipment in turn. The purposes of saving cost, reducing manual operation and improving production efficiency and safety performance can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical processing, and in particular to an alternating feeding device and a feeding method thereof. Background Art

[0002] Currently, when stamping, the operator manually places the parts to be stamped on the stamping machine's die, removes their hand, and then starts the stamping machine to stamp. After stamping is completed, the upper die retracts, and the ejector ejects the finished part. The operator manually removes the finished part, and repeats this process to complete the stamping production. This repetitive manual operation is not only inefficient, but also easily leads to production delays and increased costs due to human factors. Furthermore, stamping equipment presents many safety hazards during the production process, and operators are prone to injury accidents during operation.

[0003] To this end, the present invention proposes an alternating feeding device and a feeding method thereof, which achieve the purpose of saving costs, reducing manual operations, and improving production efficiency and safety performance. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose an alternating feeding device and a feeding method thereof.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: An alternating feeding device includes a stamping device and a feeding device connected to one side of the stamping device, wherein the stamping device includes a stamping head and a female die, and the stamping head and the female die are arranged correspondingly; the feeding device includes a feeding mechanism workbench, a first feeding mechanism, and a second feeding mechanism. The feed mechanism workbench is provided with guide components symmetrically with respect to the central axis of the feed mechanism workbench. The guide components include a long strip guide groove, a guide rail and a special-shaped guide groove. The long strip guide groove, the guide rail and the special-shaped guide groove are arranged in sequence on both sides of the central axis of the feed mechanism workbench. The first feeding mechanism and the second feeding mechanism are respectively slidably arranged on the guide assembly on the working table of the feeding mechanism, and the first feeding mechanism and the second feeding mechanism have the same structure and are mirror-imaged; It also includes a controller to control the first feeding mechanism and the second feeding mechanism to clamp the finished product after stamping and remove it from the stamping equipment.

[0006] Furthermore, the first feeding mechanism includes a pushing cylinder, a guide roller, a mechanical claw guide plate and a mechanical claw, one side of the bottom end of the mechanical claw guide plate is connected to a pushing connection block, the telescopic end is fixedly connected to the pushing connection block, the top end of the mechanical claw guide plate is slidingly connected to the mechanical claw, and the mechanical claw guide plate moves left and right in the U-shaped groove away from the pushing connection block.

[0007] Furthermore, the guide rolling member rolls reciprocatingly in the special-shaped guide groove, the mechanical claw guide plate slides reciprocatingly on the guide rail, and the pushing connection block slides reciprocatingly in the long strip guide groove.

[0008] Furthermore, the guide rolling element includes a rolling bearing and a bearing rod, the lower end of the bearing rod is rotatably connected to the rolling bearing, the upper end of the bearing rod is fixedly connected to the mechanical claw, the rolling bearing rolls on the wall of the special-shaped guide groove, and the mechanical claw moves along the path of the special-shaped guide groove driven by the guide rolling element.

[0009] Furthermore, the special-shaped guide groove gradually approaches the guide rail from the middle to both ends.

[0010] Furthermore, the special-shaped guide groove includes a flared guide section, a straight avoidance section and a closed guide section, the front part of the flared guide section is parallel to the guide rail, and the rear part gradually approaches the straight avoidance section, the straight avoidance section is parallel to the guide rail, the front part of the closed guide section gradually approaches the guide rail, and the rear part is parallel to the guide rail.

[0011] Furthermore, the end of the mechanical claw is connected to a clamping claw, and when the mechanical claw guide plate moves to the end of the special-shaped guide groove, the clamping claw corresponds to the female mold.

[0012] Furthermore, the front and rear ends of the mechanical claw are not on the same axis, and the clamping claw is adapted to the shape of the grasped part.

[0013] Furthermore, a first induction switch and a second induction switch for sensing the mechanical claw are provided at the upper and lower ends of the workbench of the feeding mechanism along the central axis, and the first induction switch and the second induction switch are connected to the controller signal.

[0014] Furthermore, a feeding method includes the above-mentioned alternating feeding device. Before stamping, the initial position of the first feeding mechanism is close to the second induction switch, and the initial position of the second feeding mechanism is close to the first induction switch. The part to be stamped is placed in the female mold. The alternating feeding includes the following steps: Step 1: After the stamped parts are stamped into finished parts, the second feeding mechanism clamps the finished parts and returns along the guide assembly, triggering the first sensor switch, transmitting the signal to the controller, and the controller controls the movement of the first feeding mechanism; Step 2: Driven by the push cylinder, the first feeding mechanism moves along the special-shaped guide groove, the guide rail and the long strip guide groove toward the stamping equipment, and intersects with the retracted second feeding mechanism. At the same time, the part to be stamped is placed in the female die, and the stamping equipment performs the stamping action; Step 3: After the stamped part is stamped into a finished part again, the first feeding mechanism moves to the top of the female die, and when the second feeding mechanism returns to the flaring guide section, the second induction switch limits the position of the second feeding mechanism; Step 4: When the mechanical claw of the first feeding mechanism picks up the finished part and returns it, the first induction switch is triggered; Step 5: The controller controls the second feeding mechanism to move toward the stamping equipment again along the corresponding guide assembly. The stamping equipment performs the stamping action again. The first feeding mechanism and the second feeding mechanism intersect again. The first feeding mechanism is restricted by the second induction switch, causing it to stop moving in the flaring guide section. The second feeding mechanism clamps the finished part again, and the process returns to step 1. Step 6: Repeat steps 1 to 5 to form an alternating cycle feeding until the stamping work of all the parts to be stamped is completed; Step 2 also includes step 21: when the second feeding mechanism retreats to the straight avoidance section, the first feeding mechanism and the second feeding mechanism implement path avoidance in the straight avoidance sections of the two groups of special-shaped guide grooves.

[0015] Compared with the existing technology, the alternating feeding device and feeding method provided by the present invention have the following advantages: 1. It adopts a simple mechanical structure and is easy to operate, which not only reduces manufacturing and maintenance costs but also improves the reliability and stability of the device; 2. The use of two mechanical claws to move back and forth to achieve feeding greatly improves work efficiency. The dual mechanical claws transport materials in an uninterrupted cycle, reducing production interruptions caused by manual material changes. The reciprocating motion of the mechanical claws is simple and efficient, ensuring accurate material delivery while maintaining high speed, which is crucial to improving overall production efficiency. 3. Using mechanical claws instead of manual material changing can ensure that human intervention is reduced in a highly repetitive environment, thereby reducing the risk of work-related accidents, minimizing the incidence of safety accidents, and also reducing the labor intensity of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the assembly structure of the present invention; Figure 2 A top view of the feeding device of the present invention; Figure 3 This is a schematic structural diagram of the first feeding mechanism from a first perspective; Figure 4This is a schematic structural diagram of the first feeding mechanism from a second perspective; Figure 5 It is a top view of the working table of the feeding mechanism; In the figure: 1, first feeding mechanism, 11, pushing cylinder, 12, guide roller, 13, mechanical claw guide plate, 131, pushing connecting block, 14, mechanical claw, 141, clamping claw, 2. The second feeding mechanism, 3. Feeding mechanism workbench, 31. Long strip guide groove, 32. Guide rail, 33. Special-shaped guide groove, 331, expansion guide section, 332, straight line avoidance section, 333, closing guide section, 4. Stamping equipment, 5. Female die, 6. Stamping head, 71. First induction switch, 72. Second induction switch. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0019] Example 1, reference Figure 1 and Figure 2 In the embodiment, an alternating feeding device includes a punching device 4 and a feeding device connected to one side of the punching device 4, wherein the punching device 4 includes a punching head 6 and a female die 5, and the punching head 6 and the female die 5 are arranged correspondingly, and the feeding device includes a feeding mechanism workbench 3, a first feeding mechanism 1, and a second feeding mechanism 2; The feed mechanism workbench 3 is provided with a guide assembly symmetrically with respect to the central axis of the feed mechanism workbench 3. The guide assembly includes a long guide groove 31, a guide rail 32, and a special-shaped guide groove 33. The long guide groove 31, the guide rail 32, and the special-shaped guide groove 33 are arranged in sequence on both sides of the central axis of the feed mechanism workbench 3. The first feeding mechanism 1 and the second feeding mechanism 2 are respectively slidably arranged on the guide components on the surface of the feeding mechanism workbench 3. The first feeding mechanism 1 and the second feeding mechanism 2 have the same structure and are mirror-imaged. The system also includes a controller that controls the first and second feeding mechanisms 1 and 2 to alternately clamp the stamped parts away from the stamping equipment 4. In this embodiment, the stamping equipment 4 is conventional, with corresponding ejectors located at the lower end of the female die 5. After the punch 6 completes stamping, the ejectors eject the finished parts from the female die. The controller can be integrated into the stamping equipment's control system, reducing physical space requirements.

[0020] By setting up the above solution, the first feeding mechanism 1 and the second feeding mechanism 2 take turns to clamp the stamped finished parts and remove them from the stamping equipment 4, thereby reducing the idle time of the stamping equipment 4 and improving the output rate of the products.

[0021] In this embodiment, in order to make the first feeding mechanism 1 and the second feeding mechanism 2 slide more conveniently on the surface of the feeding mechanism workbench 3, two sets of guide rails 32 are fixedly connected to the surface of the feeding mechanism workbench 3 by bolts, and two sets of special-shaped guide grooves 33 and the long strip guide groove 31 are opened on the feeding mechanism workbench 3, and can also pass through the feeding mechanism workbench 3. The two ends of the special-shaped guide groove 33 and the long strip guide groove 31 achieve a smooth transition through circular arcs.

[0022] Example 2, as Figure 3 and Figure 4 As shown, the first feeding mechanism 1 includes a pushing cylinder 11, a guide roller 12, a mechanical claw guide plate 13 and a mechanical claw 14. The bottom side of the mechanical claw guide plate 13 is connected to a pushing connection block 131. The telescopic end of the pushing cylinder 11 is fixedly connected to the pushing connection block 131. The top of the mechanical claw guide plate 13 is slidingly connected to the mechanical claw 14. A U-shaped groove is provided through the side of the mechanical claw guide plate 13 away from the pushing connection block 131, and the guide roller 12 moves left and right in the U-shaped groove.

[0023] The guide roller 12 rolls back and forth in the special-shaped guide groove 33. The bottom plane of the mechanical claw guide plate 13 is fixedly connected to a slider, which is slidably connected to the guide rail 32, so that the mechanical claw guide plate 13 can slide back and forth on the guide rail 32, and the pushing connecting block 131 slides back and forth in the long strip guide groove 31 under the push of the pushing cylinder 11.

[0024] The guide roller 12 includes a rolling bearing and a bearing rod. The lower end of the bearing rod is rotatably connected to the rolling bearing, and the upper end of the bearing rod is fixedly connected to the mechanical claw 14. The rolling bearing rolls on the groove wall of the special-shaped guide groove 33. Driven by the guide roller 12, the mechanical claw 14 moves along the path of the special-shaped guide groove 33. The shape of the rolling bearing is adapted to the arc at the two ends of the special-shaped guide groove 33.

[0025] In this embodiment, the push cylinder 11 is electrically connected to the controller and threadedly connected to the push connecting block 131. When the push cylinder 11 extends, it drives the push connecting block 131 to move. The push connecting block 131 is fixedly connected to the claw guide plate 13. Therefore, movement of the push connecting block 131 drives movement of the claw guide plate 13. Because the U-shaped groove on the claw guide plate 13 limits the position of the bearing rod, the claw guide plate 13 also drives movement of the bearing rod. The upper end of the bearing rod is fixedly connected to the claw 14 via a threaded pair. Therefore, movement of the claw guide plate 13 drives movement of the claw 14.

[0026] Example 3, in order to facilitate the establishment of a sliding connection between the first feeding mechanism 1 and the second feeding mechanism 2 and the feeding mechanism workbench 3, and to ensure that the first feeding mechanism 1 and the second feeding mechanism 2 can move forward and backward stably, and to ensure that the mechanical claw 14 in the first feeding mechanism 1 and the mechanical claw 14 in the second feeding mechanism 2 do not interfere with or collide with each other, the special-shaped guide groove 33 is set to gradually approach the guide rail 32 from the middle to both ends.

[0027] In order to ensure that the clamping jaws 141 can clamp the finished product in the female mold 5. The clamping jaws 141 are connected to the end of the mechanical claw 14. When the mechanical claw guide plate 13 moves to the end of the special-shaped guide groove 33 close to the stamping device 4, the clamping jaws 141 correspond to the female mold 5.

[0028] In this embodiment, if Figure 5 As shown, the specific structure of the special-shaped guide groove 33 is designed as follows: the special-shaped guide groove 33 includes a flared guide section 331, a straight avoidance section 332 and a closed guide section 333. The front part of the flared guide section 331 is parallel to the guide rail 32, and the rear part gradually approaches the straight avoidance section 332. The straight avoidance section 332 is parallel to the guide rail 32. The front part of the closed guide section 333 gradually approaches the guide rail 32, and the rear part is parallel to the guide rail 32. The guide roller 12 can only move along the path of the special-shaped guide groove 33. When the guide roller 12 moves close to the stamping equipment 4 in the flaring guide section 331, it can drive the mechanical claw 14 to move to the side of the feeding mechanism workbench 3. When the guide roller 12 rolls in the straight avoidance section 332, it drives the mechanical claw 14 to move in a straight line. When the guide roller 12 moves close to the stamping equipment 4 in the closing guide section 333, it drives the clamping claw 141 of the mechanical claw 14 close to the female mold 5. The path of the special-shaped guide groove 33 can prevent the first feeding mechanism 1 and the second feeding mechanism 2 from colliding when feeding alternately, and can also accurately feed the parts to be stamped into the female mold 5. It can be understood that the first feeding mechanism 1 and the second feeding mechanism 2 intersect when the distance between the special-shaped guide grooves 33 is the widest, that is, the path avoidance can be achieved at the straight avoidance section 332 of the two sets of special-shaped guide grooves 33, so as to avoid collision.

[0029] In order to better grasp the parts to be stamped, the front and rear ends of the mechanical claw 14 are not on the same axis, and the clamping claw 141 is adapted to the shape of the grasped parts. Figure 2 As shown, the clamping jaws 141 are in a circular shape after being closed. The opening and closing of the clamping jaws 141 are controlled by a controller.

[0030] In this embodiment, the parts to be punched can be placed in the female die 5 manually, or in an automated manner, such as by using a robot. When the clamping jaws 141 clamp the finished parts, they are provided with a centering device with the female die 5 in the stamping equipment 4. This can be achieved by using existing technology. After the clamping jaws 141 grab the stamped finished parts and return them, the finished parts can be taken away manually or by a robot. In another embodiment, after the clamping jaws 141 grab the finished parts and return them to their position, a through hole is provided on the feeding mechanism workbench 3 at a position corresponding to the clamping jaws 141, through which the finished parts can fall, and a collection frame is placed below the through hole on the feeding mechanism workbench 3. The finished parts are collected in the collection frame.

[0031] Example 4, in order to accurately control the back and forth movement of the first feeding mechanism 1 and the second feeding mechanism 2, the feeding mechanism workbench 3 is provided with a first induction switch 71 and a second induction switch 72 for sensing the mechanical claw 14 at the upper and lower ends along the central axis, and the first induction switch 71 and the second induction switch 72 are connected to the controller signal.

[0032] When the first induction switch 71 senses the first feeding mechanism 1, it sends a signal to the controller to stop the first feeding mechanism 1. After the stamping action is completed, the clamp 141 grabs the finished part and leaves. When the first induction switch 71 senses the departure of the first feeding mechanism 1, it sends a signal to the controller again. The controller controls the push cylinder 11 corresponding to the second feeding mechanism 2 to push the second feeding mechanism 2 forward. At the same time, the parts to be stamped are placed in the stamping equipment to perform the stamping action. The first feeding mechanism 1 and the second feeding mechanism 2 avoid at the straight avoidance section 332 of the special-shaped guide groove 33. When the first feeding mechanism 1 retreats to the flaring guide section 331, the second induction switch 72 limits the first feeding mechanism 1. When After the parts to be stamped in the stamping equipment are stamped into finished parts and ejected, the second feeding mechanism 2 moves to the top of the female mold, grabs the finished parts and then retreats, the first induction switch 71 senses that the second feeding mechanism 2 has left, and sends a signal to the controller, prompting the first feeding mechanism 1 to move toward the stamping equipment 4 again, the first feeding mechanism 1 and the second feeding mechanism 2 again avoid the straight avoidance section 332 of the special-shaped guide groove 33, and the stamping equipment performs the stamping action again, the first feeding mechanism 1 retreats to the flaring guide section 331, and after the second feeding mechanism 2 grabs the finished parts and leaves the female mold 5, the first feeding mechanism moves toward the stamping equipment 4 again, and the first feeding mechanism 1 and the second feeding mechanism 2 alternately cycle to clamp and remove the finished parts in the female mold 5.

[0033] It can be understood that the first feeding mechanism 1 and the second feeding mechanism 2 have the same action process, are both pushed by the corresponding pushing cylinder 11, are sensed to leave by the first sensing switch 71, and limit their position by the second sensing switch 72.

[0034] Example 5, a feeding method, including an alternating feeding device as described above, wherein before stamping, the initial position of the first feeding mechanism 1 is close to the second induction switch 72, and the initial position of the second feeding mechanism 2 is close to the first induction switch 71. The part to be stamped is placed in the female die 5. The alternating feeding method includes the following steps: Step 1: After the stamped parts are stamped into finished parts, the second feeding mechanism 2 grips the finished parts and returns along the guide assembly, triggering the first sensor switch 71. The signal is transmitted to the controller, and the controller controls the movement of the first feeding mechanism 1. Step 2: Under the push of the push cylinder 11, the first feeding mechanism 1 moves along the special-shaped guide groove 33, the guide rail 32 and the long strip guide groove 31 toward the stamping equipment, and intersects with the retracted second feeding mechanism 2. At the same time, the part to be stamped is placed in the female die 5, and the stamping equipment performs the stamping action; Step 3: After the stamped part is stamped into a finished part again, the first feeding mechanism 1 moves to the top of the female die 5, and when the second feeding mechanism 2 retreats to the flaring guide section 331, the second induction switch 72 limits the position of the second feeding mechanism 2; Step 4: When the mechanical claw 14 of the first feeding mechanism 1 grips the finished product and returns it, the first induction switch 71 is triggered; Step 5: The controller controls the second feeding mechanism 2 to move toward the stamping equipment again along the corresponding guide assembly. The stamping equipment performs the stamping action again. The first feeding mechanism 1 and the second feeding mechanism 2 intersect again. The first feeding mechanism 1 is restricted by the second sensor switch 72, causing it to stop moving at the flaring guide section 331. The second feeding mechanism 2 clamps the finished part again, and the process returns to step 1. Step 6: Repeat steps 1 to 5 to form an alternating cycle feeding until the stamping work of all the parts to be stamped is completed; Step 2 also includes step 21: when the second feeding mechanism 2 retreats to the straight avoidance section 332 , the first feeding mechanism 1 and the second feeding mechanism 2 implement path avoidance in the straight avoidance sections 332 of the two groups of special-shaped guide grooves 33 .

[0035] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An alternating feeding device, comprising a punching device (4) and a feeding device connected to one side of the punching device (4), wherein the punching device (4) comprises a punching head (6) and a female die (5), and the punching head (6) and the female die (5) are arranged correspondingly, and characterized in that: The feeding device comprises a feeding mechanism workbench (3), a first feeding mechanism (1) and a second feeding mechanism (2); A guide assembly is symmetrically arranged on the feed mechanism workbench (3) with respect to the central axis of the feed mechanism workbench (3), wherein the guide assembly comprises a long strip guide groove (31), a guide rail (32) and a special-shaped guide groove (33), and the long strip guide groove (31), the guide rail (32) and the special-shaped guide groove (33) are arranged in sequence on both sides of the central axis of the feed mechanism workbench (3); The first feeding mechanism (1) and the second feeding mechanism (2) are respectively slidably arranged on a guide assembly on the table surface of the feeding mechanism workbench (3); the first feeding mechanism (1) and the second feeding mechanism (2) have the same structure and are arranged in a mirror image; It also includes a controller for controlling the first feeding mechanism (1) and the second feeding mechanism (2) to alternately clamp the stamped finished product away from the stamping equipment (4).

2. An alternating feeding device according to claim 1, characterized in that: The first feeding mechanism (1) comprises a pushing cylinder (11), a guide roller (12), a mechanical claw guide plate (13) and a mechanical claw (14); one side of the bottom end of the mechanical claw guide plate (13) is connected to a pushing connection block (131); the telescopic end of the pushing cylinder (11) is fixedly connected to the pushing connection block (131); the top end of the mechanical claw guide plate (13) is slidably connected to the mechanical claw (14); a U-shaped groove is provided through the side of the mechanical claw guide plate (13) away from the pushing connection block (131); and the guide roller (12) moves left and right in the U-shaped groove.

3. An alternating feeding device according to claim 2, characterized in that: The guide rolling element (12) rolls back and forth in the special-shaped guide groove (33), the mechanical claw guide plate (13) slides back and forth on the guide rail (32), and the pushing connection block (131) slides back and forth in the long strip guide groove (31).

4. An alternating feeding device according to claim 3, characterized in that: The guide rolling element (12) includes a rolling bearing and a bearing rod, the lower end of the bearing rod is rotatably connected to the rolling bearing, and the upper end of the bearing rod is fixedly connected to the mechanical claw (14), the rolling bearing rolls on the groove wall of the special-shaped guide groove (33), and the mechanical claw (14) moves along the special-shaped guide groove (33) driven by the guide rolling element (12).

5. The alternating feeding device according to claim 4, characterized in that: The special-shaped guide groove (33) gradually approaches the guide rail (32) from the middle to both ends.

6. The alternating feeding device according to claim 5, characterized in that: The special-shaped guide groove (33) comprises a flared guide section (331), a straight avoidance section (332) and a closed guide section (333); the front portion of the flared guide section (331) is parallel to the guide rail (32), and the rear portion gradually approaches the straight avoidance section (332); the straight avoidance section (332) is parallel to the guide rail (32); the front portion of the closed guide section (333) gradually approaches the guide rail (32), and the rear portion is parallel to the guide rail (32).

7. The alternating feeding device according to claim 2, characterized in that: The end of the mechanical claw (14) is connected to a clamping claw (141), and when the mechanical claw guide plate (13) moves to the end of the special-shaped guide groove (33), the clamping claw (141) corresponds to the female mold (5).

8. The alternating feeding device according to claim 7, characterized in that: The front and rear ends of the mechanical claw (14) are not on the same axis, and the clamping claw (141) is adapted to the shape of the grasped part.

9. The alternating feeding device according to claim 2, characterized in that: A first induction switch (71) and a second induction switch (72) for inducing the mechanical claw (14) are provided at the upper and lower ends of the feeding mechanism workbench (3) along the central axis. The first induction switch (71) and the second induction switch (72) are connected to the controller signal.

10. A feeding method, comprising the alternating feeding device according to any one of claims 1 to 9, characterized in that: Before stamping, the initial position of the first feeding mechanism (1) is close to the second induction switch (72), and the initial position of the second feeding mechanism (2) is close to the first induction switch (71). The part to be stamped is placed in the female mold (5). Alternating feeding includes the following steps: Step 1: After the stamped parts are stamped into finished parts, the second feeding mechanism (2) grips the finished parts and returns along the guide assembly, triggering the first induction switch (71), transmitting the signal to the controller, and the controller controls the movement of the first feeding mechanism (1); Step 2: Under the push of the push cylinder (11), the first feeding mechanism (1) moves along the special-shaped guide groove (33), the guide rail (32) and the long strip guide groove (31) toward the stamping equipment, and intersects with the retracted second feeding mechanism (2). At the same time, the part to be stamped is placed in the female die (5), and the stamping equipment performs the stamping action; Step 3: After the stamped part is stamped into a finished part again, the first feeding mechanism (1) moves to the top of the female die (5), and when the second feeding mechanism (2) returns to the flaring guide section (331), the second induction switch (72) limits the position of the second feeding mechanism (2); Step 4: When the mechanical claw (14) of the first feeding mechanism (1) grips the finished product and returns it, the first induction switch (71) is triggered; Step 5: The controller controls the second feeding mechanism (2) to move toward the stamping device again along the corresponding guide assembly, and the stamping device performs the stamping action again. The first feeding mechanism (1) and the second feeding mechanism (2) intersect again. The first feeding mechanism (1) is limited in position by the second induction switch (72), so that it stops moving at the flaring guide section (331). The second feeding mechanism (2) clamps the finished product again, and the process returns to step 1. Step 6: Repeat steps 1 to 5 to form an alternating cycle feeding until the stamping work of all the parts to be stamped is completed; Step 2 also includes step 21: when the second feeding mechanism (2) retracts to the straight avoidance section (332), the first feeding mechanism (1) and the second feeding mechanism (2) implement path avoidance in the straight avoidance sections (332) of the two sets of special-shaped guide grooves (33).

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