Card issuing line 3D cross-layer forming feeding device and feeding method

Abstract

The invention discloses a card issuing line 3D cross-layer forming feeding device and method, the device comprises a feeding mechanism and a material receiving mechanism, the feeding mechanism clamps a card issuing line left supporting leg in the thickness direction through a feeding clamping jaw module, limiting in the width direction is achieved in cooperation with a limiting jaw, and it is guaranteed that the posture is stable in the carrying process; the material receiving mechanism clamps a right supporting leg through a material receiving claw module, a swing arm pushes a left supporting leg to stably swing from a material receiving angle to a feeding angle in a linkage mode, a feeding clamping claw module releases the left supporting leg in the swing process, and a limiting claw temporarily supports a left shoulder to avoid shaking. The problems that in the prior art, the feeding angle of the hairpin line is difficult to control, and insulating paint is prone to damage are solved, and the hairpin line feeding positioning device has the advantages of being accurate in positioning, capable of protecting the insulating performance and high in feeding efficiency and meets the feeding positioning requirement in hairpin line 3D cross-layer forming.

Description

Technical Field

[0001] This invention relates to hairpin thread processing technology, specifically to a hairpin thread feeding device and feeding method suitable for 3D multi-layer forming processes, and is particularly suitable for precise feeding and positioning before splitting forming. Background Technology

[0002] As the core power component of electric vehicles, the performance and cost control of the electric motor directly determine the market competitiveness of the entire vehicle. Hairpin windings in flat wire motors have become the mainstream configuration in the industry due to their high slot fill factor, excellent heat dissipation performance, and compact structure. Furthermore, 3D forming of hairpin wires, a highly technical and crucial process in flat wire motor manufacturing, directly affects the final performance and production economy of the motor due to its forming precision and efficiency.

[0003] In current mainstream 3D molding production solutions, a single-mold stamping process is often used: the 3D molding of hair clips is completed in one stamping operation, and a mold library is used to equip each specification of hair clip with a dedicated mold, thereby achieving mass production of different models of hair clips. However, this technical solution has significant limitations: to cover a full range of hair clip products with the same mold, a complete mold library must be built, all dedicated molds must be integrated and installed in the equipment, and mold switching must be completed through a servo system. This not only significantly increases the initial investment cost of the equipment, but also occupies a large amount of production space, restricts the spatial layout flexibility of the production line, and the mold switching process is cumbersome, affecting production continuity.

[0004] Based on the aforementioned industry pain points, the applicant innovatively proposed a cross-layer forming technology: through the modular mold design of the cross-layer forming mechanism, hairpin lines with different elevation angles and S-bend sizes can be quickly adapted; the matching splitting forming mechanism achieves precise forming of different top curvatures through multi-axis linkage trajectory control. This technical solution significantly reduces the number of dedicated molds, substantially lowers mold purchase and subsequent repair costs, is time-efficient and easy to operate, and greatly improves production flexibility.

[0005] However, the industrial application of cross-layer forming technology faces a key technical challenge: cross-layer forming requires multiple feeding operations at multiple forming stations, and the accuracy of the feeding angle is extremely important to ensure the consistency of products in mass production. At the same time, two core requirements must be met during the splitting forming process: first, one leg of the hairpin wire needs to be fixed, and the other leg is twisted to achieve forming, so it is necessary to ensure that the fixed end is stable and the movable end has sufficient swing space; second, the feeding must be arranged at a uniform angle to ensure forming accuracy and avoid damaging the insulating varnish on the surface of the hairpin wire.

[0006] Currently, the industry mainly uses two methods for online card issuance, both of which have obvious drawbacks:

[0007] (1) Direct feeding at the feeding angle: The feeding mechanism drives the carding line to move to the target station along the preset angle. However, during the feeding process, the starting and stopping impact of the feeding mechanism and the uneven effect of the carding line's own weight can easily cause the carding line to shake and deviate, making it difficult to maintain the preset angle stably. This can lead to feeding positioning deviation, affect the forming size accuracy, and ultimately reduce the product qualification rate.

[0008] (2) Loading the material first and then adjusting the angle: After the hairpin wire is placed randomly at the work station, the angle is corrected by clamping the hairpin wire with additional clamps or auxiliary molds. In this method, the angle adjustment process will cause direct friction and extrusion between the clamps, molds and the insulating varnish on the surface of the hairpin wire, which can easily cause damage to the insulating varnish, destroy the insulation performance of the hairpin wire and shorten its service life; at the same time, the additional angle adjustment process prolongs the loading cycle of a single hairpin wire, reduces the overall production efficiency, and makes it difficult to meet the needs of large-scale continuous production.

[0009] Therefore, there is an urgent need to develop a feeding device and method that can precisely control the feeding angle and effectively protect the insulating varnish, thereby improving the forming quality and production efficiency of hairpin wire and promoting the large-scale application of cross-layer forming technology. Summary of the Invention

[0010] To address the shortcomings of existing technologies, the present invention aims to provide a 3D cross-layer forming feeding device and feeding method for hairpins, solving the technical problems of large angle deviation and easy damage to insulating varnish in existing feeding methods, and achieving accurate, non-destructive, and efficient feeding and positioning.

[0011] To achieve the above and other related objectives, the technical solution provided by this invention is: a 3D cross-layer forming and feeding device for hairpin lines, used for feeding hairpin lines, wherein the hairpin line has an n-shaped structure and includes a left support leg, a left shoulder, a right shoulder, and a right support leg connected in sequence, comprising:

[0012] The feeding mechanism includes a conveying module, a feeding gripper module, and a limiting claw. The conveying module is connected to the feeding gripper module and is used to control the feeding gripper module to drive the hairpin wire to the receiving station along a preset direction. The feeding gripper module is used to clamp or release the left support leg along the thickness direction. The limiting claw is linked to the feeding gripper module and is used to insert into the part of the left support leg near the left shoulder and limit the width of the left support leg when the feeding gripper module clamps the left support leg. When the feeding gripper module releases the left support leg, it first supports the left shoulder and allows the left support leg to rotate, and then disengages from the left support leg.

[0013] A receiving mechanism is provided at the receiving station and includes a receiving hook module and a swing arm. The receiving hook module is used to clamp or release the right support leg. The swing arm is linked with the receiving hook module and is used to push the left support leg to swing from the receiving angle to the loading angle when the receiving hook module clamps the right support leg, and to reset when the receiving hook module releases the right support leg.

[0014] A preferred technical solution is as follows: the feeding mechanism further includes a slide, a stop block and two sets of proximity sensors. The slide is arranged along the preset direction, and the discharge end of the slide is provided with a hook for holding the connection between the left shoulder and the right shoulder. The stop block is vertically arranged on the discharge side of the slide, and the two sets of proximity sensors are fixed on the side of the stop block near the slide, respectively for detecting the positioning of the left support leg and the right support leg.

[0015] The preferred technical solution is as follows: the feeding gripper module includes a gripper cylinder, a first feeding gripper and a second feeding gripper. The gripper cylinder is used to control the first feeding gripper and the second feeding gripper to move synchronously towards each other to grip the left support leg, or to move synchronously in opposite directions to release the left support leg.

[0016] The preferred technical solution is as follows: the limiting claw is F-shaped, including a connecting part and a limiting part, the connecting part is fixedly connected to the first feeding claw, and the limiting part faces the second feeding claw and is correspondingly arranged with the left support leg.

[0017] The preferred technical solution is as follows: the handling module includes a lifting cylinder and a lateral cylinder, the lifting cylinder is fixedly installed and used to control the lifting and lowering of the lateral cylinder, and the lateral cylinder is used to control the gripper cylinder to move along the preset direction.

[0018] The preferred technical solution is as follows: the receiving hook module includes a mounting base, a slider, a first receiving hook, a second receiving hook, a first connecting rod, a second connecting rod, a spring, a push rod, a telescopic cylinder, and a top block; the mounting base has a mounting cavity, the slider slides in the mounting cavity, the push rod is arranged along the sliding direction of the slider, one end of the push rod is fixedly connected to the slider, and the other end extends out of the mounting cavity; the spring is arranged in the mounting cavity along the sliding direction of the slider, one end of the spring abuts against the slider, and the other end abuts against the mounting cavity; the middle section of the first receiving hook is rotatably mounted in the mounting cavity via a first rotating shaft. The middle section of the second receiving hook is rotatably mounted in the mounting cavity via a second rotating shaft; one end of the first connecting rod is hinged to the slider, and the other end is hinged to the tail section of the first receiving hook; one end of the second connecting rod is hinged to the slider, and the other end is hinged to the tail section of the second receiving hook; the hook sections of the first and second receiving hooks extend out of the mounting cavity and are arranged opposite to each other, forming a structure with the side wall of the mounting base to clamp the right support leg; the telescopic cylinder is fixedly mounted and used to control the top block to move along the sliding direction of the slider, and the top block and the end of the top rod extending out of the mounting cavity are arranged opposite to each other.

[0019] A preferred technical solution is as follows: both the first rotating shaft and the second rotating shaft are rotatably connected to the mounting base via bearings, the bottom end of the first rotating shaft extends out of the bottom side of the mounting base, and one end of the swing arm is fixedly connected to the bottom end of the first rotating shaft.

[0020] A feeding method based on the above-mentioned hairpin thread 3D cross-layer forming feeding device includes the following steps:

[0021] Step 1: The feeding gripper module clamps the left support leg from the thickness direction of the left support leg, and the limiting claw is inserted into the part of the left support leg near the left shoulder as the feeding gripper module clamps, thus limiting the width direction of the left support leg.

[0022] Step 2: The conveying module controls the feeding gripper module to deliver the hairpin line to the receiving station, so that the right support leg enters the clamping area of ​​the receiving hook module, and the left support leg abuts against the swing arm at the receiving angle;

[0023] Step 3: The receiving hook module clamps the right support leg, and the swing arm pushes the left support leg to swing from the receiving angle to the loading angle as the receiving hook module clamps the right support leg. Simultaneously, the feeding gripper module releases the left support leg to provide space for the left support leg to swing to the loading angle. The limiting gripper first supports the left shoulder and allows the left support leg to rotate as the feeding gripper module releases the left support leg. After the left support leg swings to the loading angle, it disengages from the left support leg.

[0024] Step 4: The conveying module controls the feeding gripper module to reset, completing the loading process.

[0025] Due to the application of the above technical solution, the beneficial effects of this invention are as follows:

[0026] Precise and controllable feeding angle: Through the bidirectional positioning design of "feeding claw thickness clamping + limiting claw width limiting", the shaking and deviation of the hairpin line during the handling process is avoided; subsequent angle adjustment is achieved through the linkage of the swing arm and the receiving hook claw module, the swing trajectory is fixed and the movement is smooth, which solves the problem of large angle deviation in the existing technology, and the feeding angle accuracy error is small, ensuring the molding processing accuracy.

[0027] Effective protection of insulating varnish: During the angle adjustment process, the swing arm pushes the left support leg to swing around the right support leg from the receiving angle to the loading angle. The limiting claw supports the left shoulder of the hairpin wire and allows the left support leg to rotate. The receiving hook module clamps and fixes the right support leg only after the angle adjustment is completed. This reduces the problem of easy damage to the insulating varnish during the hairpin wire angle adjustment process and ensures the insulation performance and service life of the hairpin wire.

[0028] High feeding efficiency: The angle adjustment action and the material clamping action are carried out simultaneously, eliminating the need for additional angle adjustment procedures and shortening the feeding cycle of a single hairpin line; each module is driven by a cylinder, with fast response speed and continuous cyclic feeding, meeting the needs of large-scale production, and improving production efficiency compared with traditional feeding methods.

[0029] Stable and reliable structure: The transmission structure is constructed using mature components such as cylinders, connecting rods, and springs, resulting in smooth operation and a low failure rate; the proximity sensor enables automated triggering of the feeding process, reducing manual intervention and further improving production stability.

[0030] In summary, this invention effectively solves the core technical problems in the material feeding process of existing card issuing lines through targeted structural design and process optimization, taking into account positioning accuracy, insulation protection and production efficiency, and has important practical application value. Attached Figure Description

[0031] Figure 1 This is a top view of the feeding device - receiving hook module in the released state, according to the present invention.

[0032] Figure 2 This is a top view of the material receiving hook module of the feeding device involved in this invention in the clamping state.

[0033] Figure 3 This is a schematic diagram of the feeding mechanism involved in the present invention.

[0034] Figure 4 for Figure 3 Enlarged diagram of point A in the middle.

[0035] Figure 5 This is a schematic diagram of the material receiving mechanism involved in the present invention.

[0036] Figure 6 This is a schematic diagram of the hairpin wire structure involved in the present invention.

[0037] Figure 7 This is a flowchart of the feeding method involved in the present invention. Detailed Implementation

[0038] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0039] Please see Figures 1-7 It should be noted that in the description of this invention, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. These terms are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component must be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0040] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0041] Example:

[0042] like Figures 1 to 2 As shown, according to an overall technical concept of the present invention, a 3D cross-layer forming feeding device for hair clips is provided.

[0043] The device mainly consists of a feeding mechanism and a receiving mechanism. These mechanisms work together to achieve a card issuing line speed of 100 (…). Figure 6 The precise feeding of the hairpin line 100 is an n-shaped structure and includes a left support leg 110, a left shoulder 120, a right shoulder 130 and a right support leg 140 connected in sequence.

[0044] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the core function of the feeding mechanism is to smoothly transport the card issuing line 100 from the waiting position to the receiving position and ensure its stable posture. It includes the transport module 11, the feeding gripper module 12, and the limiting gripper 13.

[0045] The conveying module 11 consists of a lifting cylinder 111 and a horizontal moving cylinder 112, which realizes the lifting and lowering of the feeding gripper module 12 and its horizontal movement along a preset direction, providing power for the spatial conveying of the card issuing line 100. It should be noted that the lifting cylinder 111 is used to drive the feeding gripper module 12 in the released state to be inserted through the top of the left shoulder 120 to both sides of the left support leg 110, or to drive the feeding gripper module 12 in the released state to extend through the top of the left shoulder 120.

[0046] Feeding gripper module 12: includes gripper cylinder 121, first feeding gripper 122 and second feeding gripper 123. The gripper cylinder 121 drives the first feeding gripper 122 and the second feeding gripper 123 to clamp or release along the thickness direction of the left support leg 110 of the hairpin line 100.

[0047] like Figure 4 As shown, the limiting claw 13 is F-shaped and has a connecting part 131 and a limiting part 132. The connecting part 131 is fixedly connected to the first feeding claw 122. The limiting part 132 faces the second feeding claw 123 and is correspondingly arranged with the left support leg 110. It is inserted into the part of the left support leg 110 near the left shoulder 120 during the clamping action of the feeding claw module 12, forming a limit on the width direction of the left support leg 110 to prevent the hairpin 100 from shifting in the width direction during the handling process. When released, the left shoulder 120 is supported first to prevent the hairpin 100 from falling or shaking, while allowing the left support leg 110 to rotate and adjust the angle.

[0048] In addition, the feeding mechanism also includes a slide 14, a stop 15, and a proximity sensor 16: the slide 14 is used to transport the hairpin 100, the hook 141 at the discharge end holds the connection between the left shoulder 120 and the right shoulder 130 of the hairpin 100, the stop 15 is used to limit the position of the left support leg 110 and the right support leg 140 to achieve preliminary positioning; the proximity sensor 16 detects the position of the left support leg 110 and the right support leg 140 and provides a signal trigger for subsequent clamping actions.

[0049] like Figure 1 , Figure 2 and Figure 5As shown, the receiving mechanism is located at the receiving station and is used to adjust and fix the feeding angle of the card issuing line 100. It includes a receiving hook module and a swing arm 22.

[0050] The receiving hook module includes a mounting base 211, a slider 212, a first receiving hook 213, a second receiving hook 214, a first connecting rod 215, a second connecting rod (not shown), a spring 216, a push rod 217, a telescopic cylinder 218, and a top block 219. The mounting base 211 has a mounting cavity, in which the slider 212 slides. The push rod 217 is positioned along the sliding direction of the slider, with one end fixedly connected to the slider 212 and the other end extending out of the mounting cavity. The spring 216 is positioned in the mounting cavity along the sliding direction of the slider 212, with one end abutting against the slider 212 and the other end abutting against the mounting cavity. The middle section of the first receiving hook 213 is connected to a first rotating shaft 2110. The middle section of the second receiving hook 214 is rotated into the mounting cavity via the second rotating shaft 2111; one end of the first connecting rod 215 is hinged to the slider 212, and the other end is hinged to the tail section of the first receiving hook 213; one end of the second connecting rod is hinged to the slider 212, and the other end is hinged to the tail section of the second receiving hook 214; the hook sections of the first receiving hook 213 and the second receiving hook extend out of the mounting cavity and are arranged opposite to each other, forming a structure for clamping the right support leg 140 with the side wall of the mounting base 211; the telescopic cylinder 218 is fixedly installed and used to control the top block 219 to move along the sliding direction of the slider 212, and the top block 219 and the end of the top rod 217 extending out of the mounting cavity are arranged opposite to each other.

[0051] The telescopic cylinder 218 drives the top block 219 to push the top rod 217, which in turn drives the slider 212 to compress the spring 216 and slide. Then, the first connecting rod 215 and the second connecting rod control the synchronous opening and closing of the first receiving hook 213 and the second receiving hook 214 to achieve stable clamping or release of the right support leg 140. The spring 216 enables the first receiving hook 213 and the second receiving hook 214 to automatically return to the open state after the telescopic cylinder 218 is reset.

[0052] Swing arm 22: It is fixedly connected to the first rotating shaft 2110 corresponding to the first receiving hook 213. When the receiving hook module clamps the right support leg 140, the first rotating shaft 2110 rotates synchronously to drive the swing arm 22 to swing, pushing the left support leg 110 to rotate smoothly from the receiving angle (initial contact angle) to the feeding angle (the angle required for forming and feeding), so as to achieve precise angle adjustment.

[0053] like Figure 7 As shown, based on the above-described apparatus, the feeding method of the present invention includes the following steps, each step working together to achieve precise and non-destructive feeding:

[0054] Initial limiting clamping: The feeding claw module 12 clamps the left support leg 110 along the thickness direction to avoid squeezing the insulating varnish along the width direction; at the same time, the F-shaped limiting claw 13 is inserted into the part of the left support leg 110 near the left shoulder 120 during the clamping action, forming a limit on the width direction of the left support leg 110, realizing bidirectional positioning of "thickness + width", ensuring the stability of the hairpin line 100 during the handling process, without shaking or deviation.

[0055] Transport to receiving station: The lifting cylinder 111 and the transverse cylinder 112 of the transport module 11 work together to control the feeding gripper module 12 to drive the carding line 100 to move to the receiving station along the preset direction; at this time, the right support leg 140 enters the clamping area of ​​the receiving hook module, and the left support leg 110 abuts against the swing arm 22 at the receiving angle to complete the station docking.

[0056] Angle Adjustment and Fixing: The telescopic cylinder 218 drives the top block 219 to push the top rod 217, which in turn drives the slider 212 to slide. Through the first connecting rod 215 and the second connecting rod, the first receiving hook 213 and the second receiving hook 214 move towards each other to clamp the right support leg 140. Simultaneously, the first rotating shaft 2110 rotates, which drives the swing arm 22 to swing and push the left support leg 110 to rotate smoothly from the receiving angle to the loading angle. During this process, the feeding claw module 12 releases the left support leg 110 to provide space for the left support leg 110 to swing. The limiting claw 13 temporarily supports the left shoulder 120 to prevent the hairpin wire 100 from shaking or falling off and to avoid additional friction with the insulating paint. After the left support leg 110 swings to the loading angle, the limiting claw 13 disengages from the left support leg 110. At this time, the right support leg 140 is fixed by the receiving hook module, and the left support leg 110 is at the preset loading angle, which meets the positioning requirements of the subsequent molding process.

[0057] Cyclic Reset: After the material loading is completed, the conveying module 11 controls the feeding gripper module 12 to reset to the initial position, thus completing the material loading.

[0058] This invention solves the problems of difficult control of the feeding angle and easy damage to the insulating varnish in the prior art of hairpin wire. It has the "synergistic effect of bidirectional positioning" and the "technical advantage of synchronous angle adjustment", and is applicable to the feeding of each forming process in the 3D cross-layer forming of hairpin wire.

[0059] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A hairpin wire 3D cross-layer forming feeding device for feeding a hairpin wire, the hairpin wire being in an n-shaped structure and comprising a left leg, a left shoulder, a right shoulder and a right leg connected in sequence, characterized in that, The utility model relates to a left and right shoulder jointing device, including: The feeding mechanism includes a carrying module, a feeding clamp jaw module and a limiting claw, the carrying module is transmission connection with the feeding clamp jaw module, is used for controlling the feeding clamp jaw module drives the hairpin line to send to the material receiving station along the preset direction, the feeding clamp jaw module is used for clamping or releasing the left branch in the thickness direction, the limiting claw is linked with the feeding clamp jaw module, is used for when the feeding clamp jaw module clamps the left branch, inserts the part close to the left shoulder of the left branch and forms the limiting to the width direction of the left branch, when the feeding clamp jaw module releases the left branch, first supports the left shoulder and allows the left branch to rotate, then separates the left branch, The material receiving mechanism is equipped in the material receiving station and includes a material receiving hook jaw module and a swing arm, the material receiving hook jaw module is used for clamping or releasing the right branch, the swing arm is linked with the material receiving hook jaw module, is used for when the material receiving hook jaw module clamps the right branch, pushes the left branch and swings from the material receiving angle to the feeding angle, resets when the material receiving hook jaw module releases the right branch.

2. The card wire 3D cross-layer forming feeding device according to claim 1, characterized in that: The feeding mechanism further includes a slide, a stop block and two groups of proximity sensors, the slide is arranged along the preset direction, the discharge end of the slide is equipped with a hook for hanging the connecting part of the left shoulder and the right shoulder, the stop block is vertically arranged on the discharge side of the slide, two groups of proximity sensors are fixedly arranged on the side of the stop block close to the slide and are respectively used for detecting the arrival of the left branch and the right branch.

3. The device according to claim 1, wherein: The feeding clamp jaw module includes a clamp jaw cylinder, a first feeding clamp jaw and a second feeding clamp jaw, the clamp jaw cylinder is used for controlling the first feeding clamp jaw and the second feeding clamp jaw to synchronously move towards each other to clamp the left branch or synchronously move in reverse to release the left branch.

4. The device according to claim 3, characterized in that: The limiting claw is F-shaped and includes a connecting part and a limiting part, the connecting part is fixedly connected with the first feeding clamp jaw, and the limiting part is arranged towards the second feeding clamp jaw and corresponds to the left branch.

5. The device according to claim 3, wherein: The carrying module includes a lifting cylinder and a horizontal movement cylinder, the lifting cylinder is fixedly arranged and is used for controlling the horizontal movement cylinder to lift, and the horizontal movement cylinder is used for controlling the clamp jaw cylinder to move along the preset direction.

6. The device according to claim 1, wherein: The material receiving hook module comprises a mounting seat, a sliding block, a first material receiving hook, a second material receiving hook, a first connecting rod, a second connecting rod, a spring, a top rod, a telescopic cylinder and a top block; the mounting seat is provided with a mounting cavity, the sliding block is slidably arranged in the mounting cavity, the top rod is arranged along the sliding direction of the sliding block, one end of the top rod is fixedly connected with the sliding block, and the other end of the top rod extends out of the mounting cavity; the spring is arranged in the mounting cavity along the sliding direction of the sliding block, one end of the spring abuts against the sliding block, and the other end of the spring abuts against the mounting cavity; the middle section of the first material receiving hook is rotatably arranged in the mounting cavity through a first rotating shaft, and the middle section of the second material receiving hook is rotatably arranged in the mounting cavity through a second rotating shaft; one end of the first connecting rod is hingedly connected with the sliding block, the other end of the first connecting rod is hingedly connected with the tail section of the first material receiving hook, one end of the second connecting rod is hingedly connected with the sliding block, and the other end of the second connecting rod is hingedly connected with the tail section of the second material receiving hook; the hook sections of the first material receiving hook and the second material receiving hook extend out of the mounting cavity and are oppositely arranged, and form a structure for clamping the right leg with the side wall of the mounting seat; the telescopic cylinder is fixedly arranged and used for controlling the movement of the top block along the sliding direction of the sliding block, and the top block is oppositely arranged with the end of the top rod extending out of the mounting cavity.

7. The device according to claim 6, characterized in that: The first rotating shaft and the second rotating shaft are rotatably connected with the mounting seat through bearings, and the bottom end of the first rotating shaft extends out of the bottom side of the mounting seat, and one end of the swing arm is fixedly connected with the bottom end of the first rotating shaft.

8. A feeding method based on the feeding device for 3D cross-layer forming of hairpins according to any one of claims 1-7, characterized in that, The method comprises the following steps: Step 1: the feeding clamp module clamps the left leg from the thickness direction of the left leg, and the limiting claw is inserted into the part of the left leg close to the left shoulder to limit the width direction of the left leg with the clamping action of the feeding clamp module; Step 2: the carrying module controls the feeding clamp module to send the hairpin wire to the material receiving station, so that the right leg enters the clamping area of the material receiving hook module, and the left leg abuts on the swing arm at the material receiving angle; Step 3: the material receiving hook module clamps the right leg, and the swing arm pushes the left leg to swing from the material receiving angle to the feeding angle with the clamping action of the material receiving hook module; synchronously, the feeding clamp module releases the left leg to provide space for the left leg to swing to the feeding angle, and the limiting claw first supports the left shoulder and allows the left leg to rotate with the releasing action of the feeding clamp module, and then is separated from the left leg when the left leg swings to the feeding angle; Step 4: the carrying module controls the feeding clamp module to reset, and completes the feeding.

Images