A multi-layer hot pressing device for a plate

Abstract

This invention discloses a multi-layer hot pressing device for sheet metal, belonging to the technical field of sheet metal processing equipment. The device includes: a frame; a pressure plate assembly mounted on the frame; the pressure plate assembly has an upper pressure plate, a lower pressure plate, multiple first carrier plates, and multiple second carrier plates that are parallel to each other; the first and second carrier plates are alternately arranged between the upper and lower pressure plates, wherein the upper pressure plate is adjacent to the uppermost second carrier plate, and the lower pressure plate is adjacent to the lowermost second carrier plate; the edges of the second carrier plates are provided with extending protrusions; a synchronous closing mechanism symmetrically distributed on both sides of the frame for driving the lower pressure plate and the multiple first carrier plates to move synchronously; a lifting drive mechanism mounted on the frame for driving the lower pressure plate to lift; and multiple limiting members spaced apart along the height direction of the frame and movably connected to the extending protrusions. This device overcomes the spatial interference problem between adjacent intermediate connecting rods in a multi-layer configuration and meets the engineering requirements of multi-layer hot presses.

Description

Technical Field

[0001] This invention relates to the field of sheet metal processing equipment, and in particular to a multi-layer hot pressing device for sheet metal. Background Technology

[0002] Hot presses are key equipment in the processing of sheet metal, forming the sheet through the closing motion of multiple hot plates. CN104589432A discloses a multi-layer hot press for sheet metal processing, introducing a synchronous closing device and a synchronous balancing device based on the traditional single-layer hot press, significantly improving processing efficiency and accuracy. This device achieves coordinated movement of the multi-layer pressing plates through a synchronous linkage mechanism symmetrically distributed on both sides of the frame. Its core structure includes: an upper connecting rod (hinged to the upper pressing plate and equipped with multiple insertion holes), a lower connecting rod (hinged to the lower pressing plate), and several intermediate connecting rods (each hinged to a different layer of the plate). One end of the intermediate connecting rod is inserted into the insertion hole of the upper connecting rod, ensuring it remains parallel to the lower connecting rod, thus achieving synchronous and precise closing of the pressing plates. This technical solution solves the problems of low single-layer efficiency, asynchronous multi-layer closing, insufficient positioning accuracy, and low automation in traditional hot presses, possessing core advantages such as high automation, high production efficiency, and stable processing quality, and is widely used in the hot pressing process of wood-based panels and other sheet metal processing.

[0003] However, the aforementioned synchronous linkage mechanism scheme has significant limitations in its adaptability to multi-layer hot presses with 20 or more layers: to meet the height requirements of factory buildings and the actual conditions for equipment transportation and installation, the overall height of the hot press is strictly limited, resulting in the thickness of individual pressure plates being restricted to the range of 5-8 cm. As the number of pressure plate layers increases, the installation space between adjacent intermediate linkages is continuously compressed. In configurations with more than 20 layers, the available installation space between each intermediate linkage and the pressure plate is extremely limited, and spatial interference easily occurs between adjacent intermediate linkages.

[0004] Therefore, it is necessary to develop a new type of multi-layer hot pressing device for sheet metal to meet the engineering requirements of multi-layer hot presses. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a multi-layer hot pressing device for sheet metal.

[0006] The multi-layer hot pressing device for sheet metal includes:

[0007] frame;

[0008] A pressure plate assembly is mounted on a frame. The pressure plate assembly includes an upper pressure plate, a lower pressure plate, multiple first carrier plates, and multiple second carrier plates that are parallel to each other. The upper pressure plate is fixedly mounted at the top of the frame, and the lower pressure plate is movably mounted at the bottom of the frame. The first and second carrier plates are alternately mounted between the upper and lower pressure plates, with the upper pressure plate adjacent to the uppermost second carrier plate and the lower pressure plate adjacent to the lowermost second carrier plate. The edges of the second carrier plates are provided with extending protrusions. The pressure plate assembly has an unfolded state and a pressed state.

[0009] The synchronous closing mechanism is symmetrically distributed on both sides of the frame and is used to drive the lower pressure plate and multiple first carrier plates to move synchronously.

[0010] A lifting drive mechanism, mounted on the frame and connected to the lower pressure plate, is used to drive the lower pressure plate to rise or fall; and

[0011] Multiple limiting components are spaced apart along the height direction of the frame; when the pressure plate assembly is in the unfolded state, the extended protrusion of each second carrier plate abuts against the limiting components spaced apart along the height direction; when the pressure plate assembly is in the pressed state, the extended protrusion disengages from the limiting components.

[0012] The synchronous closing mechanism and the lifting drive mechanism work together to realize the conversion between the unfolded state and the pressed state of the pressure plate assembly;

[0013] When the pressure plate assembly is in the unfolded state, spaces for accommodating the sheet material are formed between the upper pressure plate and the second carrier plate, between the first carrier plate and the second carrier plate, and between the lower pressure plate and the second carrier plate; when the pressure plate assembly is in the pressed state, the spaces between the upper pressure plate and the second carrier plate, between the first carrier plate and the second carrier plate, and between the lower pressure plate and the second carrier plate are contracted.

[0014] According to the aforementioned multi-layer hot pressing device for sheet metal, the frame is equipped with a support column, a base located at the bottom of the support column, and a top plate located at the top of the support column.

[0015] The lifting drive mechanism is located on the base;

[0016] The upper pressure plate is fixedly connected to the top of the support column and / or the top plate.

[0017] According to the aforementioned multi-layer hot pressing device for sheet metal, the synchronous closing mechanism is provided with an upper support arm, a lower support arm, and several intermediate connecting rods; one end of the upper support arm is hinged to the upper pressure plate, and several insertion holes are opened in the upper support arm along its length direction; one end of the lower support arm is hinged to the lower pressure plate, and the other end of the upper support arm is hinged to the other end of the lower support arm; one end of the intermediate connecting rod is hinged to the first carrier plate, and the other end is inserted into the insertion hole of the upper support arm; the intermediate connecting rod is parallel to the lower support arm.

[0018] The aforementioned multi-layer hot pressing device for sheet metal also includes a guide mechanism mounted on the frame for guiding the lower pressure plate, the first carrier plate, and the second carrier plate to move up and down in a straight line.

[0019] Furthermore, the guiding mechanism consists of a slide rail and a slider; the slide rail is fixedly mounted on the frame, and the extension direction of the slide rail is the height direction of the frame; the slider is fixedly connected to the lower pressure plate, the first carrier plate, and the second carrier plate respectively.

[0020] The slider forms a sliding pair with the protrusion on the slide rail through the fitting groove.

[0021] Furthermore, the guiding mechanism consists of a smooth cylindrical guide rail and a bushing; the guide rail is fixedly mounted on the frame, and the extension direction of the guide rail is the height direction of the frame; the bushing is sleeved on the outer periphery of the guide rail and is fixedly connected to the lower pressure plate, the first carrier plate, and the second carrier plate respectively;

[0022] The inner wall of the bushing and the outer surface of the guide rail achieve axial sliding through a clearance fit.

[0023] According to the aforementioned multi-layer hot pressing device for plates, the width of the extension protrusions corresponding to the second carrier plate from bottom to top increases sequentially in the lateral direction; the width of the limiting member from bottom to top decreases sequentially in the lateral direction; during the process of each carrier plate rising sequentially, the upper limiting member will not interfere with the lower extension protrusion.

[0024] According to the aforementioned multi-layer hot pressing device for sheet metal, multiple lifting drive mechanisms are provided and arranged in an array on the frame.

[0025] The present invention has the following beneficial effects:

[0026] (1) The multi-layer hot pressing device for plates of the present invention overcomes the spatial interference problem between adjacent intermediate connecting rods in multi-layer configuration, enabling the device to reliably adapt to the requirements of multi-layer hot pressing projects with more than 20 layers. The synchronous closing mechanism is only connected to the first carrier plate, driving each first carrier plate to rise in strict synchronization. The second carrier plate is not directly connected to the synchronous closing mechanism, but relies on the lifting force of the plate to achieve synchronous upward movement. This design reduces the number of intermediate connecting rods that originally needed to connect all carrier plates to half of the original number, and the installation spacing between adjacent intermediate connecting rods is expanded.

[0027] (2) The multi-layer hot pressing device of the present invention ensures that the pressing timing and pressing amount between all layers are completely consistent, avoiding the problem of uneven product quality caused by different pressing sequence or displacement of each layer, and improving the quality consistency and pass rate of multi-layer hot pressing products.

[0028] (3) The second carrier plate in the multi-layer hot pressing device of the present invention is not directly connected to the synchronous closing mechanism, which greatly reduces the number of hinge points and connecting parts, reduces the assembly difficulty, and effectively reduces the overall manufacturing cost of the multi-layer hot pressing device. Attached Figure Description

[0029] Figure 1A three-dimensional structural diagram of the pressure plate assembly of a multi-layer hot pressing device for sheet metal in its unfolded state;

[0030] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0031] Figure 3 for Figure 1 A magnified view of a section at point B in the middle;

[0032] Figure 4 This is a front view of the pressure plate assembly of a multi-layer hot pressing device for sheet metal in its unfolded state.

[0033] Figure 5 This is a side view of the pressure plate assembly of a multi-layer hot pressing device for sheet metal in its unfolded state.

[0034] Figure 6 for Figure 5 A magnified view of a section at point C;

[0035] Figure 7 for Figure 5 A magnified view of a section at point D;

[0036] Figure 8 A structural schematic diagram of the second carrier plate, the extension protrusion, the limiting member, and the supporting column;

[0037] Figure 9 This is a front view of the pressure plate assembly of a multi-layer hot press device for sheet metal in the pressing state;

[0038] Figure 10 This is a side view of the pressure plate assembly of a multi-layer hot press device for sheet metal in the pressing state;

[0039] Figure 11 A three-dimensional structural diagram of the first carrier plate and slider combined.

[0040] Figure 12 A three-dimensional structural diagram of the combined state of the second carrier plate and the slider;

[0041] Figure 13 A three-dimensional structural diagram showing the combination of the first carrier plate, the second carrier plate, the guide rail, and the bushing;

[0042] Figure 14 for Figure 13 A magnified view of a section at point E in the middle.

[0043] Explanation of reference numerals in the attached figures:

[0044] 1. Frame; 11. Support column; 12. Base; 13. Top plate;

[0045] 2. Pressure plate assembly; 21. Upper pressure plate; 22. Lower pressure plate; 23. First carrier plate; 24. Second carrier plate; 25. Extension protrusion;

[0046] 3. Synchronous closing mechanism; 31. Upper support arm; 32. Lower support arm; 33. Intermediate connecting rod;

[0047] 4. Lifting drive mechanism;

[0048] 5. Limiting components;

[0049] 6. Guide mechanism; 61. Slide rail; 62. Slider; 63. Guide rail; 64. Bushing;

[0050] 100. Board material. Detailed Implementation

[0051] To make the technical problem to be solved, the technical solution and advantages of the present invention clearer, the following description will be provided in conjunction with the accompanying drawings. Figures 1 to 14 The technical solution of the present invention will be clearly and completely described in conjunction with specific embodiments.

[0052] An embodiment of the present invention provides a multi-layer hot pressing device for sheet metal, the structure of which is as follows: Figures 1 to 10 As shown, the multi-layer hot pressing device for sheet metal includes a frame 1, a pressure plate assembly 2, a synchronous closing mechanism 3, a lifting drive mechanism 4, and multiple limiting components 5.

[0053] The frame 1 serves as the overall support frame, supporting the pressure plate assembly 2 and the lifting drive mechanism 4, and providing a foundation for the installation of the limiting component 5. Specifically, the frame 1 is provided with a support column 11, a base 12 located at the bottom of the support column 11, and a top plate 13 located at the top of the support column 11. The lifting drive mechanism 4 is located on the base 12, and the upper pressure plate 21 is fixedly connected to the top of the support column 11 and / or the top plate 13.

[0054] The pressure plate assembly 2, as the core component of the hot pressing device, realizes the hot pressing treatment of the sheet metal. Specifically, the pressure plate assembly 2 is mounted on the frame 1 and includes an upper pressure plate 21, a lower pressure plate 22, multiple first carrier plates 23, and multiple second carrier plates 24 that are parallel to each other. The upper pressure plate 21 is fixedly mounted at the top of the frame 1; the lower pressure plate 22 is movably mounted at the bottom of the frame 1 and can move up and down along the height of the frame 1; the first carrier plates 23 and the second carrier plates 24 are alternately arranged between the upper pressure plate 21 and the lower pressure plate 22, wherein the upper pressure plate 21 is adjacent to the uppermost second carrier plate 24, and the lower pressure plate 22 is adjacent to the lowermost second carrier plate 24. Heating elements (such as electric heating tubes or hot oil channels) are provided inside the upper pressure plate 21, the lower pressure plate 22, the first carrier plates 23, and the second carrier plates 24. The edges of the second carrier plates 24 are provided with extending protrusions 25. Figure 1 and Figure 4For clarity, the first carrier plate 23 and the second carrier plate 24 in the middle position are not shown.

[0055] The lifting drive mechanism 4 is mounted on the frame 1 and connected to the lower pressure plate 22, used to drive the lower pressure plate 22 to rise or fall. The lifting drive mechanism 4 is a hydraulic cylinder; of course, the lifting drive mechanism 4 can also be other structures capable of producing linear drive.

[0056] Multiple lifting drive mechanisms 4 are arranged in an array on the frame 1, and each lifting drive mechanism 4 is specifically mounted on the base 12. In this embodiment of the invention, four lifting drive mechanisms 4 are provided, but the actual number is determined according to actual needs and is not limited. The lifting drive mechanisms 4 are fixedly connected to the bottom surface of the lower pressure plate 22 by flange or threaded connection to ensure that the thrust and pull of the lifting drive mechanisms 4 can be reliably transmitted to the lower pressure plate 22.

[0057] The synchronous closing mechanism 3 is symmetrically distributed on both sides of the frame 1, and is used to drive the lower pressure plate 22 and multiple first carrier plates 23 to move synchronously. Specifically, the synchronous closing mechanism 3 is provided with an upper support arm 31, a lower support arm 32, and several intermediate connecting rods 33; one end of the upper support arm 31 is hinged to the upper pressure plate 21, and several insertion holes are opened in the upper support arm 31 along its length direction; one end of the lower support arm 32 is hinged to the lower pressure plate 22, and the other end of the upper support arm 31 is hinged to the other end of the lower support arm 32; one end of the intermediate connecting rod 33 is hinged to the first carrier plate 23, and the other end is inserted into the insertion hole of the upper support arm 31, and the intermediate connecting rod 33 is parallel to the lower support arm 32. The synchronous closing mechanism 3 is not limited to the specific structure of the embodiment of the present invention, and other equivalent alternatives that can be conceived by those skilled in the art can also be used as the synchronous closing mechanism 3.

[0058] The synchronous closing mechanism 3 and the lifting drive mechanism 4 work together to drive the pressure plate assembly to switch between the unfolded and pressed states. The upper support arm 31 and the lower support arm 32 form a scissor-like linkage structure. When the lifting drive mechanism 4 pushes the lower pressure plate 22 upward, the lower support arm 32 rotates around its hinge point with the upper support arm 31, causing the upper support arm 31 to deflect accordingly. Since the intermediate connecting rod 33 is inserted into the hole of the upper support arm 31 and is parallel to the lower support arm 32, each intermediate connecting rod 33 is displaced proportionally, thereby driving each first carrier plate 23 to move upward synchronously and uniformly. During unfolding, the actions are reversed, and each first carrier plate 23 separates synchronously. Figure 1 and Figure 4 For clarity, the middle connecting rod 33 in the middle position is not shown.

[0059] Multiple limiting members 5 are fixed at intervals along the height direction of the frame 1. Each limiting member 5 is a straight plate, with one end fixedly connected to the inner side of the support column 11 of the frame 1, and the other end extending freely and able to contact the extension protrusion 25. Figure 6 and Figure 7 As shown. When the pressure plate assembly 2 is in the unfolded state, the extended protrusions 25 of each second carrier plate 24 abut against the limiting members 5 spaced apart along the height direction, suspending the second carrier plate 24 at a predetermined height, ensuring uniform gaps between layers, and facilitating the insertion or removal of the sheet material 100; at this time, the second carrier plate 24 maintains a set unfolded distance from the lower first carrier plate 23 or the lower pressure plate 22, providing operating space for loading the sheet material 100. When the pressure plate assembly 2 is in the pressed state, the extended protrusions 25 disengage from the limiting members 5, and the gaps between layers contract synchronously.

[0060] The pressure plate assembly 2 has an unfolded state and a pressed state. When the pressure plate assembly 2 is in the unfolded state, a space for accommodating the sheet material 100 is formed between the upper pressure plate 21 and the second carrier plate 24, between the first carrier plate 23 and the second carrier plate 24, and between the lower pressure plate 22 and the second carrier plate 24. When the pressure plate assembly 2 is in the pressed state, the space between the upper pressure plate 21 and the second carrier plate 24, between the first carrier plate 23 and the second carrier plate 24, and between the lower pressure plate 22 and the second carrier plate 24 contracts, applying uniform pressure and heat to the sheet material 100.

[0061] The pressing process of the multi-layer hot press for sheet metal includes the following three stages:

[0062] First stage: The lifting drive mechanism 4 drives the lower pressure plate 22 to rise slowly, and the synchronous closing mechanism 3 drives each first carrier plate 23 to rise synchronously; the plate 100 on each first carrier plate 23 rises accordingly, and the upper surface of the plate 100 gradually approaches the lower surface of the upper second carrier plate 24.

[0063] In the second stage: after the upper surface of the plate 100 contacts the lower surface of the second carrier plate 24, as the first carrier plate 23 continues to rise, the plate 100 exerts an upward lifting force on the second carrier plate 24. The extension protrusion 25 of the second carrier plate 24 disengages from the limiting member 5 and moves upward synchronously with the plate 100. Since the rising amount of each first carrier plate 23 is completely consistent, the timing and displacement of the lifting of each second carrier plate 24 by each layer of plate 100 are the same, and all second carrier plates 24 achieve synchronous upward movement.

[0064] Third stage: Each first carrier plate 23 continues to rise to the set stroke, and the gap between each layer synchronously shrinks to the pressing thickness required by the process. The upper pressure plate 21, the second carrier plate 24, the first carrier plate 23 and the lower pressure plate 22 jointly apply uniform pressure to the plate 100. Combined with the heating effect of the heating elements inside each carrier plate, the hot pressing process is completed. Figure 9 This is a front view of a multi-layer hot press device for sheet metal in the pressing state. Figure 10 This is a side view of a multi-layer hot pressing device for sheet metal in the pressing state.

[0065] Explanation of the depressurization and unfolding process of the multi-layer hot pressing device for sheet metal:

[0066] After hot pressing, the lifting drive mechanism drives the lower pressure plate 22 to descend, and the synchronous closing mechanism 3 drives each first carrier plate 23 to descend synchronously. During the descent of the first carrier plate 23, the lifting force between the plate 100 and the second carrier plate 24 disappears, and the second carrier plate 24 descends under its own weight until the extension protrusion 25 re-abuts the corresponding limiting member 5, and the second carrier plate 24 stops at the predetermined unfolding position. Each first carrier plate 23 continues to descend to the initial position, the gaps between each layer are evenly unfolded, and the finished plate 100 is taken out from each layer, completing a complete work cycle.

[0067] The multi-layer hot pressing device for sheet metal of the present invention connects the synchronous closing mechanism 3 only to the first carrier plate 23, driving each first carrier plate 23 to rise in strict synchronization. The second carrier plate 24 is not directly connected to the synchronous closing mechanism 3, but relies on the lifting force of the sheet metal 100 to move upward synchronously. This design reduces the number of intermediate connecting rods 33 that originally needed to connect all carrier plates to half of the original number, and expands the installation spacing between adjacent intermediate connecting rods 33, overcoming the spatial interference problem between adjacent intermediate connecting rods 33 in multi-layer configurations. The passive automatic reset method of the second carrier plate 24 is not affected by the increase in the number of layers, and the operation is simple and reliable. The device can reliably adapt to the requirements of multi-layer hot pressing projects with more than 20 layers.

[0068] The multi-layer hot pressing device for sheet metal of the present invention ensures that the pressing timing and pressing amount between all layers are completely consistent, avoiding the problem of uneven product quality caused by different pressing sequences or displacement differences between layers, and improving the quality consistency and pass rate of multi-layer hot pressing products.

[0069] The second carrier plate 24 is not directly connected to the synchronous closing mechanism 3, which reduces the number of hinge points and connecting parts, reduces the assembly difficulty, and reduces the overall manufacturing cost of the multi-layer hot press device.

[0070] Optionally, the multi-layer hot pressing device for sheet metal also includes a guide mechanism 6 disposed on the frame 1, which guides the lower pressure plate 22, the first carrier plate 23, and the second carrier plate 24 to move up and down in a straight line, ensuring smooth movement of the lower pressure plate 22, the first carrier plate 23, and the second carrier plate 24 during lifting. The guide mechanism 6 can be selected with a suitable structure according to the actual situation. This embodiment of the invention provides two types of guide mechanisms 6.

[0071] The first type of guiding mechanism 6 consists of a slide rail 61 and a slider 62; the slide rail 61 is fixedly mounted on the frame 1, and the extension direction of the slide rail 61 is the height direction of the frame 1; for example... Figure 11 and Figure 12 As shown, slider 62 is fixedly connected to lower pressure plate 22, first carrier plate 23 and second carrier plate 24 respectively. Slider 62 forms a sliding pair with protrusion on slide rail 61 through fitting groove.

[0072] The second type of guiding mechanism 6: such as Figure 13 and Figure 14 As shown, the guide mechanism 6 consists of a smooth cylindrical guide rail 63 and a bushing 64. The guide rail 63 is fixedly mounted on the frame 1, and the extension direction of the guide rail 63 is the height direction of the frame 1. The bushing 64 is sleeved on the outer periphery of the guide rail 63 and is fixedly connected to the lower pressure plate 22, the first carrier plate 23 and the second carrier plate 24 respectively. The inner wall of the bushing 64 and the outer surface of the guide rail 63 achieve axial sliding through clearance fit.

[0073] In a multi-layer configuration, the motion interference between adjacent carrier plates during their sequential ascent is a significant factor limiting the expansion of the layer count. Furthermore, the width of the extension protrusion 25 corresponding to the second carrier plate 24 increases sequentially in the lateral direction from bottom to top, while the width of the limiting member 5 decreases sequentially in the lateral direction from bottom to top, ensuring that the lateral width of the upper limiting member 5 is always less than the lateral width of the lower extension protrusion 25. Figure 8 As shown, during the sequential ascent of each carrier plate, when the lower extension protrusion 25 passes the upper limiting member 5, the upper limiting member 5 does not laterally obstruct or jam the lower extension protrusion 25. This eliminates motion interference between the extension protrusion 25 and the limiting member 5 during the ascent of each carrier plate at the structural level, ensuring the smoothness and reliability of the movement of each carrier plate in a multi-layer configuration. The gradient width design between the extension protrusion 25 and the limiting member 5 achieves spatial avoidance without affecting its original deployment and positioning function. Even in the deployed state, the extension protrusions 25 on the edges of each second carrier plate 24 can still accurately abut against the corresponding limiting member 5, precisely positioning the second carrier plate 24 at a predetermined height.

[0074] The limiting member 5 is a straight plate, with multiple straight plates spaced apart, and the width of the limiting member 5 decreases sequentially in the horizontal direction from bottom to top. Alternatively, the limiting member 5 can also be a continuous stepped structure, with the width of the limiting member 5 decreasing sequentially in the horizontal direction from bottom to top.

[0075] In the embodiments of this invention, descriptions involving terms such as "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0076] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0077] Finally, it should be noted that the above-described embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit them. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the scope of the technology disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the scope of protection of the present invention.

Claims

1. A multi-layer hot pressing device for sheet metal, characterized in that, include: Rack (1); A pressure plate assembly (2) is provided on the frame (1); the pressure plate assembly (2) is provided with an upper pressure plate (21), a lower pressure plate (22), a plurality of first carrier plates (23) and a plurality of second carrier plates (24) that are parallel to each other; the upper pressure plate (21) is fixedly provided at the top of the frame (1), and the lower pressure plate (22) is movably provided at the bottom of the frame (1); the first carrier plates (23) and the second carrier plates (24) are alternately provided between the upper pressure plate (21) and the lower pressure plate (22), wherein the upper pressure plate (21) is adjacent to the uppermost second carrier plate (24), and the lower pressure plate (22) is adjacent to the lowermost second carrier plate (24); the edge of the second carrier plate (24) is provided with an extension protrusion (25); the pressure plate assembly (2) has an unfolded state and a pressed state; The synchronous closing mechanism (3) is symmetrically distributed on both sides of the frame (1) and is used to drive the lower pressure plate (22) and multiple first carrier plates (23) to move synchronously. The lifting drive mechanism (4) is set on the frame (1) and connected to the lower pressure plate (22) for driving the lower pressure plate (22) to rise or fall; as well as Multiple limiting members (5) are spaced apart along the height direction of the frame (1); when the pressure plate assembly (2) is in the unfolded state, the extension protrusion (25) of each second carrier plate (24) abuts against the limiting members (5) spaced apart along the height direction; when the pressure plate assembly (2) is in the pressed state, the extension protrusion (25) disengages from the limiting members (5). The synchronous closing mechanism (3) and the lifting drive mechanism (4) work together to realize the conversion between the unfolded state and the pressed state of the pressure plate assembly (2); When the pressure plate assembly (2) is in the unfolded state, a space for accommodating the plate (100) is formed between the upper pressure plate (21) and the second carrier plate (24), between the first carrier plate (23) and the second carrier plate (24), and between the lower pressure plate (22) and the second carrier plate (24); when the pressure plate assembly (2) is in the pressed state, the space between the upper pressure plate (21) and the second carrier plate (24), between the first carrier plate (23) and the second carrier plate (24), and between the lower pressure plate (22) and the second carrier plate (24) is contracted.

2. The multi-layer hot pressing device for sheet metal according to claim 1, characterized in that, The frame (1) is provided with a support column (11), a base (12) located at the bottom of the support column (11) and a top plate (13) located at the top of the support column (11). The lifting drive mechanism (4) is mounted on the base (12); The upper pressure plate (21) is fixedly connected to the top of the support column (11) and / or the top plate (13).

3. The multi-layer hot pressing device for sheet metal according to claim 1, characterized in that, The synchronous closing mechanism (3) is provided with an upper support arm (31), a lower support arm (32) and several intermediate connecting rods (33); one end of the upper support arm (31) is hinged to the upper pressure plate (21), and several insertion holes are provided in the upper support arm (31) along its length direction; one end of the lower support arm (32) is hinged to the lower pressure plate (22), and the other end of the upper support arm (31) is hinged to the other end of the lower support arm (32); one end of the intermediate connecting rod (33) is hinged to the first carrier plate (23), and the other end is inserted into the insertion hole of the upper support arm (31); the intermediate connecting rod (33) and the lower support arm (32) remain parallel.

4. The multi-layer hot pressing device for sheet metal according to claim 1, characterized in that, It also includes a guide mechanism (6) set on the frame (1) for guiding the lower pressure plate (22), the first carrier plate (23) and the second carrier plate (24) to move up and down in a straight line.

5. The multi-layer hot pressing device for sheet metal according to claim 4, characterized in that, The guide mechanism (6) consists of a slide rail (61) and a slider (62); the slide rail (61) is fixedly mounted on the frame (1), and the extension direction of the slide rail (61) is the height direction of the frame (1); the slider (62) is fixedly connected to the lower pressure plate (22), the first carrier plate (23), and the second carrier plate (24) respectively. The slider (62) forms a sliding pair with the protrusion on the slide rail (61) through the fitting groove.

6. The multi-layer hot pressing device for sheet metal according to claim 4, characterized in that, The guiding mechanism (6) consists of a smooth cylindrical guide rail (63) and a bushing (64); the guide rail (63) is fixedly mounted on the frame (1), and the extension direction of the guide rail (63) is the height direction of the frame (1); the bushing (64) is sleeved on the outer periphery of the guide rail (63) and is fixedly connected to the lower pressure plate (22), the first carrier plate (23), and the second carrier plate (24) respectively; The inner wall of the bushing (64) and the outer surface of the guide rail (63) achieve axial sliding through clearance fit.

7. The multi-layer hot pressing device for sheet metal according to claim 1, characterized in that, The width of the extension protrusion (25) corresponding to the second carrier plate (24) from bottom to top increases sequentially in the lateral direction; the width of the limiting member (5) from bottom to top decreases sequentially in the lateral direction; during the process of each carrier plate rising sequentially, the upper limiting member (5) will not interfere with the lower extension protrusion (25).

8. The multi-layer hot pressing device for sheet metal according to claim 1, characterized in that, Multiple lifting drive mechanisms (4) are provided and are arranged in an array on the frame (1).

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