阅读说明：本技术 电磁驱动的旋锁式板材连接装置及方法 (Electromagnetically-driven rotary locking type plate connecting device and method ) 是由 陈超 潘晴 彭浩 武金亮 李宇翔 于 2020-06-12 设计创作，主要内容包括：本发明提供了一种电磁驱动的旋锁式板材连接装置,包括：支撑框架、电磁驱动装置、电磁移动板、冲压头、导向板、底模和导向结构,所述支撑框架包括顶部支撑板、引导板和底部支撑板,所述顶部支撑板与引导板之间通过两个连接副固定连接,所述引导板与底部支撑板之间通过两根空心圆筒固定连接,所述电磁移动板设置在所述顶部支撑板与引导板之间；所述冲压头设置在所述电磁移动板下方,所述电磁驱动装置与导向结构配合令所述电磁移动板带动所述冲压头旋转下压,将板材旋压至所述底模的型腔中；本发明还提供了一种电磁驱动的旋锁式板材连接方法,能够通过电磁驱动板材旋压连接,连接精度、结构强度高,连接过程不需辅助材料,有效降低了连接成本。(The invention provides an electromagnetically-driven twist-lock type plate connecting device, which comprises: the electromagnetic guide device comprises a support frame, an electromagnetic driving device, an electromagnetic moving plate, a stamping head, a guide plate, a bottom die and a guide structure, wherein the support frame comprises a top support plate, a guide plate and a bottom support plate, the top support plate is fixedly connected with the guide plate through two connecting pairs, the guide plate is fixedly connected with the bottom support plate through two hollow cylinders, and the electromagnetic moving plate is arranged between the top support plate and the guide plate; the electromagnetic driving device is matched with the guide structure to enable the electromagnetic moving plate to drive the stamping head to rotate and press downwards, so that the plate is spun into the cavity of the bottom die; the invention also provides an electromagnetically-driven spin-lock type plate connecting method, which can be used for connecting by spinning through the electromagnetically-driven plates, has high connecting precision and structural strength, does not need auxiliary materials in the connecting process, and effectively reduces the connecting cost.)

1. An electromagnetically-driven twist-lock type sheet material connecting device, comprising: the device comprises a supporting frame, an electromagnetic driving device, an electromagnetic moving plate, a guide plate, a punching head and a bottom die;

the support frame comprises a top support plate, a guide plate and a bottom support plate, a through hole is formed in the center of the guide plate, the top support plate is fixedly connected with the guide plate through two symmetrically arranged connecting pairs, the guide plate is fixedly connected with the bottom support plate through two symmetrically arranged hollow cylinders, the electromagnetic moving plate is arranged between the top support plate and the guide plate, a connecting rod is arranged at the bottom of the electromagnetic moving plate and penetrates through the through hole of the guide plate, the stamping head is arranged at the bottom of the connecting rod, the bottom die and the stamping head are coaxially arranged, the bottom die is fixedly arranged at the center of the bottom support plate, the electromagnetic driving device is arranged on the electromagnetic moving plate and the top support plate and is used for driving the electromagnetic moving plate to move, and the bottom die is used for placing a connecting plate.

2. The electromagnetically-driven twist-lock type panel connecting device according to claim 1, wherein the electromagnetically-driven device comprises a driving copper wire and a driven copper wire, the driving copper wire is disposed in a groove at the bottom of the top supporting plate, the driven copper wire is disposed at the top of the electromagnetically-moving plate, and the driving copper wire and the driven copper wire are both communicated with a power supply.

3. The electromagnetic-driven turn-lock type plate connecting device according to claim 1, wherein a rubber block is further arranged between the electromagnetic moving plate and the guide plate, a through hole is formed in the center of the rubber block, the rubber block and the guide plate are coaxially arranged, and the connecting rod is arranged in the through hole of the guide plate in a penetrating manner through the through hole of the rubber block.

4. The electromagnetic-driven turn-lock type plate connecting device according to claim 1, wherein two guide plates are provided, the two guide plates are symmetrically provided on both sides of the top support plate and the guide plate, an upper end and a lower end of each guide plate are fixedly connected to the top support plate and the guide plate, respectively, a guide device is provided on each guide plate, guide connecting rods are symmetrically provided on both sides of the electromagnetic moving plate, and the electromagnetic moving plate is connected to the guide device through the guide connecting rods.

5. The electromagnetic-driven rotary lock type plate connecting device according to claim 4, wherein the guide device is provided with a guide seat, the guide seat is of a waist-shaped frame structure, the guide seat is fixedly arranged on the guide plate, a guide sliding block and a guide fixing block are arranged in the guide seat, the guide sliding block and the guide fixing block are connected through a spring, the guide fixing block is fixed at one end of the guide seat, the guide sliding block is movably arranged in the guide seat, a connecting rod through hole is formed in the guide sliding block, and the guide connecting rod penetrates through the connecting rod through hole.

6. An electromagnetically actuated turn-lock type panel connecting device as claimed in claim 5, wherein said guide seats of said two guide plates are inclined at a predetermined angle to the horizontal plane.

7. The electromagnetic-driven turn-lock type plate connecting device according to claim 1, wherein a mounting protrusion is disposed on a top surface of the punching head, a mounting groove is disposed on a bottom portion of the connecting rod, the punching head is tightly mounted on the bottom portion of the connecting rod through interference fit with the mounting protrusion, a lower end of the punching head is a cylinder, and a plurality of spiral grooves are uniformly formed in a side surface of the cylinder of the punching head.

8. The electromagnetically-driven twist-lock type plate connecting device according to claim 7, wherein a cavity is formed in the middle of the bottom mold, the bottom surface of the cavity is flat, a plurality of ratchet teeth are uniformly and tightly arranged on the side wall of the cavity in a surrounding manner, and the direction of rotation of the ratchet teeth is opposite to the direction of arrangement of the spiral grooves.

9. An electromagnetically-driven twist-lock type panel connecting method applied to the electromagnetically-driven twist-lock type panel connecting apparatus according to any one of claims 1 to 8, comprising:

the method comprises the following steps: placing a plate to be connected between a stamping head and a bottom die;

step two: starting a power supply to enable the driving copper wire and the driven copper wire to generate repulsive magnetic force, wherein the electromagnetic moving plate rotates and moves downwards along the track direction of the guide seat under the influence of the magnetic force, the rotating direction is opposite to the rotating direction of the ratchet, and at the moment, the spring and the rubber block are stressed and compressed;

step three: the punching head is driven by the electromagnetic moving plate to rotate and punch downwards, the upper plate is pressed and embedded into the lower plate to form a mechanical lock, meanwhile, the upper plate and the lower plate are in extrusion fit to form a spiral lock in the rotating and pressing process through the punching head and the bottom die, the punching head rotates and punches downwards gradually, materials among the connecting plates are interwoven together, and the lower plate is completely attached to the bottom die;

step four: after the spinning is finished, the driving copper wire and the driven copper wire are powered off, the magnetic force disappears, the electromagnetic moving plate is rotationally lifted to the original position along the track of the guide seat under the action of the rubber blocks and the spring in the guide seat, the electromagnetic moving plate resets, the plate connection is finished, and the next wheel of plate connection can be started.

10. The method of claim 9 wherein in step three, the helical grooves and protrusions of the punch cooperate to form helical projections in the sheet during the rotary punching process.

Technical Field

The invention relates to the technical field of plate connection, in particular to an electromagnetically-driven twist-lock type plate connecting device and method.

Background

With the popularization of light-weight automobiles, more and more light-weight plates (such as aluminum alloy, magnesium alloy and the like) are widely applied to automobile bodies. These lightweight materials not only reduce the weight of the vehicle body, but also increase the strength of the vehicle body to some extent. In recent years, the connection of these lightweight materials has been a focus of research.

The traditional plate connecting method mainly comprises welding, gluing and rivet connection. There are many branches of welding techniques such as resistance spot welding, submerged arc welding, and carbon dioxide arc welding. The welding connection technology mainly melts metal by generating local heat, realizes mutual flowing of materials, and forms welding connection points by cooling. The welding technology has higher technical requirements on operators, the welding technology requires higher equipment investment for connection, the pollution generated during connection is serious, and the energy consumption is higher. Since welding is a chemical method of connection, and metal is melted at high temperature for connection, a large amount of carbon dioxide exhaust gas is generated in the connection process, and welding is not suitable for connecting dissimilar metals due to different chemical properties such as melting points of dissimilar plates. Furthermore, welding does not enable metal to plastic and plastic to plastic interconnection.

The bonding technology can realize the connection of various materials, the surface of a connecting plate needs to be cleaned before bonding, and the requirement on the surface quality of the plate is high. The connection point of the glue joint is formed for a longer time, the connection efficiency is lower, and the glue joint is more sensitive to the influence of the temperature. The stability of the glue joint is poor, the impact resistance is poor, the glue joint is easy to age, and the service life is short.

Rivet joining techniques can achieve higher joining strength, but this method requires an additional auxiliary material, rivets, and rivets are consumable parts, resulting in higher joining costs. Traditional formula of punching riveting need punch in advance to panel, has increased one process, has reduced production efficiency. In recent years, hollow rivets are adopted for punching and riveting, and the rivets can pierce through the upper-layer plate in the connection process to damage the plate. In addition, the hollow rivet is made of different materials from the plate, so that electrochemical corrosion is easy to generate, and the connection quality is reduced.

Disclosure of Invention

The invention provides an electromagnetically-driven twist-lock type plate connecting device and method, and aims to provide a plate connecting mode which is high in connecting strength and does not need auxiliary connecting materials.

In order to achieve the above object, an embodiment of the present invention provides an electromagnetically driven twist-lock type panel connecting device, including:

the device comprises a supporting frame, an electromagnetic driving device, an electromagnetic moving plate, a guide plate, a punching head and a bottom die;

the support frame comprises a top support plate, a guide plate and a bottom support plate, a through hole is formed in the center of the guide plate, the top support plate is fixedly connected with the guide plate through two symmetrically arranged connecting pairs, the guide plate is fixedly connected with the bottom support plate through two symmetrically arranged hollow cylinders, the electromagnetic moving plate is arranged between the top support plate and the guide plate, a connecting rod is arranged at the bottom of the electromagnetic moving plate and penetrates through the through hole of the guide plate, the stamping head is arranged at the bottom of the connecting rod, the bottom die is coaxially arranged with the stamping head, the bottom die is fixedly arranged at the center of the bottom support plate, the electromagnetic driving device is arranged on the electromagnetic moving plate and the top support plate and is used for driving the electromagnetic moving plate to move, and the bottom die is used for placing a connecting plate.

Wherein, electromagnetic drive device is including driving copper line and passive copper line, the setting of driving copper line is in the recess of top support plate bottom, passive copper line sets up the top of electromagnetism movable plate, driving copper line and passive copper line all communicate the power.

The electromagnetic guide plate is characterized in that a rubber block is further arranged between the electromagnetic moving plate and the guide plate, a through hole is formed in the center of the rubber block, the rubber block is coaxial with the guide plate, and the connecting rod penetrates through the through hole of the rubber block and is arranged in the through hole of the guide plate.

The electromagnetic moving plate comprises a top supporting plate, a guide plate and an electromagnetic moving plate, and is characterized by further comprising two guide plates, wherein the two guide plates are symmetrically arranged on two sides of the top supporting plate and the guide plate, each guide plate is fixedly connected to the upper end and the lower end of each guide plate respectively, the top supporting plate and the guide plate are arranged on the guide plates, guide devices are arranged on the guide plates, guide connecting rods are symmetrically arranged on two sides of the electromagnetic moving plate, and the electromagnetic moving plate passes through the guide connecting rods and is.

The guide device is provided with a guide seat, the guide seat is of a waist-shaped frame structure, the guide seat is fixedly arranged on the guide plate, a guide sliding block and a guide fixing block are arranged in the guide seat, the guide sliding block and the guide fixing block are connected through a spring, the guide fixing block is fixed at one end of the guide seat, the guide sliding block is movably arranged in the guide seat, a connecting rod through hole is formed in the guide sliding block, and the guide connecting rod is arranged in the connecting rod through hole in a penetrating mode.

The guide seats on the two guide plates are obliquely arranged at a preset angle with the horizontal plane.

The top surface of the stamping head is provided with an installation bulge, the bottom of the connecting rod is provided with an installation groove, the stamping head passes through the installation bulge and the installation groove are in interference fit with each other and are tightly installed at the bottom of the connecting rod, the lower end of the stamping head is a cylinder, and a plurality of spiral grooves are uniformly formed in the side face of the cylinder of the stamping head.

The middle part of the bottom die is provided with a cavity, the bottom surface of the cavity is smooth, a plurality of ratchets are uniformly and tightly arranged on the side wall of the cavity in a surrounding mode, and the rotating direction of the ratchets is opposite to the setting direction of the spiral grooves.

The embodiment of the invention also provides an electromagnetic drive twist-lock type plate connecting method, which comprises the following steps:

the method comprises the following steps: placing a plate to be connected between a stamping head and a bottom die;

step two: the power supply is started, the driving copper wire and the driven copper wire generate repulsive magnetic force, the electromagnetic moving plate rotates and moves downwards along the track direction of the guide seat under the influence of the magnetic force, the rotating direction is opposite to the rotating direction of the ratchet, and at the moment, the spring and the rubber block are stressed and compressed.

Step three: the punching press head is driven by the electromagnetic moving plate to rotate downwards for punching, the upper plate is pressed to be embedded into the lower plate to form a mechanical lock, the upper plate and the lower plate are matched in a protruding mode through the punching press head and the bottom die in a rotating and pressing process, the mechanical lock is formed on the upper plate and the lower plate, and meanwhile, the punching press head gradually rotates downwards along with the punching press head, so that materials among plates are connected in an interweaving mode to form a spiral lock, the lower plate is completely attached to the bottom die, and the spiral pressing is completed.

Step four: after the spinning is finished, the driving copper wire and the driven copper wire are powered off, the magnetic force disappears, and the electromagnetic moving plate rotates along the track of the guide seat to be lifted to the original position under the action of the rubber blocks and the spring in the guide seat. The electromagnetic moving plate is reset, the connection of the plates is completed, and the connection of the plates in the next round can be started.

In the third step, the spiral groove of the punching head is matched with the convex part of the bottom die, so that the plate forms a spiral protrusion in the rotary punching process.

The scheme of the invention has the following beneficial effects:

1. the invention adopts electromagnetic drive, has high stamping descending speed and shorter reaction time, and is more convenient to control compared with hydraulic stamping;

2. the bottom die with the ratchet structure and the punching head can be matched with each other to form convective extrusion, which is beneficial to expanding a mechanical lock structure;

3. in the rotary stamping process, the arrangement direction of the spiral groove is opposite to the rotating direction of the bottom die ratchet, the spinning direction of the stamping head is opposite to the rotating direction of the ratchet, and two plate materials can be mutually woven under spinning to form a spiral locking structure and are tightly connected, so that the connection strength is improved;

4. the rubber block is arranged in the spinning device, so that the spinning process can be buffered, and meanwhile, the rubber block can be matched with the spring to complete the rotary reset of the stamping head, so that a rapid demoulding mode is realized.

Drawings

FIG. 1 is a schematic structural view of an electromagnetically actuated twist-lock type panel attachment of the present invention;

FIG. 2 is a view showing a structure of a guide plate of the electromagnetically driven twist-lock type panel connecting device of the present invention;

FIG. 3 is a schematic view of a guide slider and a guide fixing block of the electromagnetically driven twist-lock type plate connecting device according to the present invention;

FIG. 4 is a schematic view of the connection of the punch heads of the electromagnetically actuated twist-lock type panel connecting device of the present invention;

FIG. 5 is a schematic view of a punch head of the electromagnetically actuated twist-lock type panel attachment of the present invention;

FIG. 6 is a schematic bottom die view of the electromagnetically actuated twist-lock type panel attachment apparatus of the present invention;

FIG. 7 is a simplified flow diagram of the electromagnetically driven twist-lock type panel attachment method of the present invention;

FIG. 8 is a cross-sectional view of an electromagnetically actuated twist-lock panel attachment point of the present invention;

FIG. 9 is a cross-sectional view A-A of the electromagnetically actuated twist-lock panel attachment point of the present invention;

FIG. 10 is a cross-sectional view B-B of the electromagnetically actuated twist-lock panel attachment point of the present invention;

FIG. 11 is an upper panel effect view of the electromagnetically actuated twist-lock panel connection point of the present invention;

FIG. 12 is an illustration of the lower sheet effect of the electromagnetically actuated twist-lock sheet attachment points of the present invention.

[ description of reference ]

1-an electromagnetic moving plate; 1 a-a guide link; 1 b-mounting a groove; 2-punching head; 2 a-mounting a projection; 2 b-a spiral groove; 3-bottom die; 3 a-a cavity; 3 b-a ratchet; 4-a top support plate; 5-a guide plate; 6-bottom support plate; 7-a connection pair; 8-hollow cylinder; 9-a connecting rod; 10-drive copper wire; 11-passive copper wire; 12-a rubber block; 13-a guide plate; 13 a-a guide seat; 13 b-a guide slide; 13 c-guiding fixed blocks; 13 d-spring; 13 e-connecting rod through hole; 14 a-upper sheet material; 14 b-lower sheet material; 14 c-a screw lock; 14 d-mechanical lock; 14 e-helical projections.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

The invention provides an electromagnetically-driven twist-lock type plate connecting device and method, aiming at the problems that the connecting strength of the traditional plate connecting mode is greatly influenced by the outside and additional auxiliary materials are needed in part of connecting modes.

As shown in fig. 1, an embodiment of the present invention provides an electromagnetically driven twist-lock type panel connecting apparatus, including: the device comprises a supporting frame, an electromagnetic driving device, an electromagnetic moving plate 1, a guide plate 13, a stamping head 2 and a bottom die 3; the support frame comprises a top support plate 4, a guide plate 5 and a bottom support plate 6, a through hole is formed in the center of the guide plate 5, the top support plate 4 is fixedly connected with the guide plate 5 through two symmetrically arranged connecting pairs 7, the guide plate 5 is fixedly connected with the bottom support plate 6 through two symmetrically arranged hollow cylinders 8, the electromagnetic moving plate 1 is arranged between the top support plate 4 and the guide plate 5, a connecting rod 9 is arranged at the bottom of the electromagnetic moving plate 1, the connecting rod 9 is arranged in the through hole of the guide plate 5 in a penetrating manner, the stamping head 2 is arranged at the bottom of the connecting rod 9, the bottom die 3 is coaxially arranged with the stamping head 2, the bottom die 3 is fixedly arranged at the center of the bottom support plate 6, the electromagnetic driving device is arranged on the electromagnetic moving plate 1 and the top support plate 4, the electromagnetic driving device is used for driving the electromagnetic moving plate 1 to move, and the bottom die 3 is used for placing a connecting plate.

In the electromagnetically-driven twist-lock type plate connecting device according to the above embodiment of the present invention, the hollow cylinder 8 is fixedly connected with the guide plate 5 and the bottom support plate 6 through screws, the bottom mold 3 is fixedly disposed at the center of the bottom support plate 6 through screws, when the electromagnetically-driven device is powered on, the electromagnetically-driven device pushes the electromagnetic moving plate 1 away from the top support plate 4, and since the connecting rod 9 is inserted into the guide plate 5, when the electromagnetic moving plate 1 moves downward, the stamping head 2 descends, so that the stamping head 2 is stamped towards the bottom mold 3 through electromagnetic driving.

Wherein, electromagnetic drive device is including drive copper line 10 and passive copper line 11, drive copper line 10 sets up the bottom of top support plate 4, passive copper line 11 sets up the top of electromagnetism movable plate 1, drive copper line 10 and passive copper line 11 all communicate the power.

According to the electromagnetically-driven twist-lock type plate connecting device provided by the embodiment of the invention, the top of the electromagnetic moving plate 1 is provided with the groove, the driven copper wire 11 is arranged in the groove, and the driving copper wire 10 is arranged at the top of the top supporting plate 4, so that when the upper copper wire and the lower copper wire are both powered on, the upper copper wire and the lower copper wire generate repulsive magnetic fields, and the electromagnetic moving plate 1 is pushed downwards.

Wherein, still be provided with a block rubber 12 between electromagnetism movable plate 1 and the guide board 5, the through-hole has been seted up at the center of block rubber 12, block rubber 12 with the coaxial setting of guide board 5, connecting rod 9 passes through the through-hole of block rubber 12 is worn to establish in the through-hole of guide board 5.

In the electromagnetically-driven twist-lock type plate connecting device according to the above embodiment of the present invention, the rubber block 12 has elasticity, so that the rubber block 12 is compressed to generate an elastic force in the stamping process of the electromagnetic moving plate 1, so as to provide a buffer in the pressing process, and when the electromagnetic moving plate 1 loses downward power, the rubber block 12 rebounds to lift the electromagnetic moving plate 1.

As shown in fig. 1 and 2, the electromagnetic moving plate further comprises two guide plates 13, the two guide plates 13 are symmetrically arranged on two sides of the top support plate 4 and the guide plate 5, the upper end and the lower end of each guide plate 13 are respectively and fixedly connected to the top support plate 4 and the guide plate 5, a guide device is arranged on each guide plate 13, guide connecting rods 1a are symmetrically arranged on two sides of the electromagnetic moving plate 1, and the electromagnetic moving plate 1 is connected with the guide device through the guide connecting rods 1 a.

As shown in fig. 2 and 3, the guide device is provided with a guide seat 13a, the guide seat 13a is of a waist-shaped frame structure, the guide seat 13a is fixedly arranged on the guide plate 13, a guide slider 13b and a guide fixing block 13c are arranged in the guide seat 13a, the guide slider 13b and the guide fixing block 13c are connected through a spring 13d, the guide fixing block 13c is fixed at one end of the guide seat 13a, the guide slider 13b is movably arranged in the guide seat 13a, a connecting rod through hole 13e is formed in the guide slider 13b, and the guide connecting rod 1a is inserted in the connecting rod through hole 13 e.

The guide seats 13a on the two guide plates 13 are inclined at a preset angle with the horizontal plane.

In the electromagnetically-driven twist-lock type plate connecting device according to the embodiment of the present invention, the guide plates 13 are symmetrically disposed on both sides of the top support plate 4 and the guide plate 5, and the guide plates 13 are fixedly mounted on the top support plate 4 and the guide plate 5 through the connecting pair 7. The electromagnetic moving plate comprises a guide plate 13, a guide device guide seat 13a is arranged on the guide plate 13, guide connecting rods 1a are symmetrically arranged on two sides of the electromagnetic moving plate 1, and the electromagnetic moving plate 1 is connected with the guide device through the guide connecting rods 1 a. When the electromagnetic moving plate 1 descends, the guide connecting rod 1a moves along with the guide base 13a through the guide slider 13b, and meanwhile, the guide base 13a is provided with a preset angle, so that the guide connecting rods 1a on two sides rotate simultaneously to enable the electromagnetic moving plate 1 to rotate along with the guide slider 13a, the spring 13d is stressed to store energy and compress when the guide slider 13b moves obliquely, and when the electromagnetic moving plate 1 loses the downward pressing force, the spring 13d cooperates with the rubber 12 to enable the electromagnetic moving plate 1 to rotate and reset.

As shown in fig. 4 and 5, the top surface of the stamping head 2 is provided with an installation protrusion 2a, the bottom of the connecting rod 9 is provided with an installation groove 1b, the stamping head 2 passes through the installation protrusion 2a and the installation groove 1b are in interference fit with each other and are tightly installed at the bottom of the connecting rod 9, the lower end of the stamping head 2 is a cylinder, and a plurality of spiral grooves 2b are uniformly formed in the side surface of the cylinder of the stamping head 2.

As shown in fig. 6, a cavity 3a is disposed in the middle of the bottom mold 3, the bottom surface of the cavity 3a is flat, a plurality of ratchet teeth 3b are uniformly and tightly arranged on the side wall of the cavity 3a in a surrounding manner, and the direction of rotation of the ratchet teeth 3b is opposite to the direction of arrangement of the spiral groove 2 b.

In the electromagnetically-driven twist-lock type plate connecting device according to the above embodiment of the present invention, the stamping head 2 and the connecting rod 9 are connected by the interference fit of the mounting protrusion 2a and the mounting groove 1b, the stamping head 2 needs to stamp and rotate together with the connecting rod 9, meanwhile, the stamping head 2 is provided with a plurality of spiral grooves 2b, a plurality of arc protrusions are correspondingly formed on the side surface of the stamping head 2, when the stamping head 2 stamps a plate material into the cavity 3a of the bottom die 3, the ratchet 3b on the side wall of the cavity 3a cooperates with the shape of the side surface of the stamping head 2 to rotationally extrude the plate material into a spiral lock 14c structure, and simultaneously, the material of the upper plate material 14a is embedded into the lower plate material 14b to form a mechanical lock 14d with high strength connection, and when the stamping head 2 rotationally stamps to a set distance, the spiral lock 14c and the mechanical lock 14d between the plate materials are completely formed, the connection of the plates is completed.

As shown in fig. 7, an embodiment of the present invention provides an electromagnetically driven twist-lock type plate material joining method, including:

the method comprises the following steps: the plate to be connected is placed between the stamping head 2 and the bottom die 3, and the plate can flatly cover the upper top surface of the bottom die 3.

Step two: the driving copper wire 10 and the driven copper wire 11 are respectively connected with power supply, so that mutually repulsive electromagnetic fields are generated. Since the driving copper wire 10 is fixed to the bottom of the top support plate 4, and the top support plate 4 is fixed, the generated electromagnetic force is applied to the electromagnetic moving plate 1 by the driven copper wire 11, and pushes the electromagnetic moving plate 1 to generate a downward motion. Because the guide connecting rod 1a on the electromagnetic moving plate 1 is connected and penetrated in the guide sliding block 13b, the guide sliding block 13b is stressed to move along the track of the guide seat 13a, and the spring 13d is stressed and compressed to store energy, meanwhile, the rubber block 12 is stressed and compressed in the process and provides buffer for the stamping process, meanwhile, because the guide seat 13a is obliquely arranged according to a preset angle, the electromagnetic moving plate 1 can generate certain rotation along the track direction of the guide seat 13a, and the stamping head 2 can generate downward movement and rotation of a certain angle under the driving of the electromagnetic moving plate 1;

step three: as shown in fig. 8 to 12, as the punch 2 descends, the punch 2 spins the upper plate 14a and the lower plate 14b, the upper plate 14a is forced to press the lower plate 14b, and since the directions of the punch 2 and the spiral depressions 2b are opposite to the directions of the ratchets 3b of the bottom mold 3, the materials of the upper plate 14a and the lower plate 14b flow toward the bottom mold 3 and have a certain rotation angle, and the materials of the plates are interlaced by the extrusion of the punch 2 and the bottom mold 3, and finally the plates are completely attached to the bottom mold 3. In addition, during the downward punching process of the punching head 2, the upper layer plate 14a is embedded into the lower layer plate 14b, and a reliable mechanical lock 14d structure is formed between the plates; the bottom die 3 and the punching head 2 which are simultaneously provided with a plurality of ratchets 3b are mutually matched, and the sheet materials are mutually extruded in a convection manner under the action of the rotary extrusion of the punching head 2, so that the formed mechanical lock 14d structure is favorably expanded; under the spinning of the punching head 2 and the molding of the bottom die 3, the materials of the upper layer plate 14a and the lower layer plate 14b are mutually interwoven to form a spiral lock 14c structure; the spiral depression of the punching head 2 can form a spiral protrusion 14e structure on the plate material in the rotary punching process; when the stamping head 2 stamps to a set distance, the plates are connected in a spinning way;

step four: after the punching press is completed, the driving copper wire 10 and the driven copper wire 11 are powered off, so that the repulsive electromagnetic field disappears, the compressed rubber block 12 rebounds after the power off, and the spring 13d compressed in the guide seat 13a generates an upward oblique force, so that the punching press head 2 can rotate and return at a certain angle. The electromagnetic moving plate 1 returns to the initial state, and the spinning connection of the next group of plates can be carried out.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.