A plate pressing and bonding device for composite plate manufacturing

Abstract

The present invention relates to the technical field of laminating devices, and discloses a plate laminating and bonding device for manufacturing composite plates, comprising: a laminating machine body, a conveying mechanism, and a laminating mechanism, wherein the conveying mechanism is arranged on the laminating machine body, and is used for linearly conveying the composite plate; the laminating mechanism is arranged in the laminating machine body. In the laminating mechanism provided by the present invention, two layers of polystyrene foam plastic composite plates with different densities can be laminarized in steps, and the high-density foam layer can be clamped by a clamping assembly, and the high-density foam layer can be preliminarily laminarized, so that the high-density foam layer can be subjected to the pressure of the upper laminating assembly alone, and then the entire composite plate is lifted by a lifting assembly, and the high-density foam layer and the low-density foam layer are laminarized together for a second time, and this step-by-step laminating method can ensure that each foam layer can be accurately laminarized.

Description

Technical Field

[0001] The invention relates to the technical field of pressing devices, and more specifically, to a plate pressing and bonding device for manufacturing composite plates. Background Art

[0002] Polystyrene composite board is made of polystyrene foam and other materials. It is mainly used in the packaging field, construction field, etc. For polystyrene composite board used in the packaging field, it is generally bonded together by cardboard and polystyrene foam. After the gluing operation is completed, a pressing and bonding device is required to press the composite board so that the adhesive can be tightly bonded to the cardboard.

[0003] At present, the existing polystyrene composite board pressing device generally adopts a flat plate pressing or roller rolling method to press the composite board. Although it can achieve basic pressing operations, when the composite board is a multi-layer polystyrene foam plastic with different densities, such as some high-end packaging composite boards, the outer layer is a low-density polystyrene foam plastic for providing good cushioning performance, and the inner layer is a high-density polystyrene foam plastic to enhance the overall strength of the board, due to the different densities of the inner and outer layers, the required pressure is also different, and since the pressing force of the existing pressing device is constant and it is a one-time pressing method, if the pressing force is large, the low-density foam layer will be destroyed, and if the pressing force is small, the adhesive pressing effect will be poor. Therefore, there is an urgent need for a pressing and bonding device that can be suitable for multiple layers of polystyrene foam plastic composite boards with different densities and can perform pressing treatments on different density layers separately. Summary of the invention

[0004] The purpose of the present invention is to provide a plate pressing and bonding device for composite plate manufacturing to solve the above-mentioned technical problems.

[0005] The present invention solves the above-mentioned technical problems through the following technical solutions:

[0006] The present invention provides a plate pressing and bonding device for composite plate manufacturing, comprising: a pressing machine body, a conveying mechanism and a pressing mechanism, wherein the conveying mechanism is arranged on the pressing machine body and is used for linearly conveying the composite plate;

[0007] The pressing mechanism is arranged in the pressing machine body, and comprises an upper pressing assembly, a lifting assembly and two clamping assemblies. The upper pressing assembly is mounted on the top wall of the pressing machine body, and the lifting assembly is embedded and mounted on the top of the conveying mechanism and aligned with the upper pressing assembly. The lifting assembly is used to lift the composite sheet that reaches above it, so that the composite sheet is separated from the conveying mechanism.

[0008] The two clamping assemblies are symmetrically arranged on both sides of the lifting assembly, and the clamping assembly includes a clamping plate, a lifting plate, a transmission connection and a linear telescopic driving source. The lifting plate is located below the clamping plate, and the distance between the lifting plate and the lifting assembly is shorter than the distance between the clamping plate and the lifting assembly. The telescopic end of the linear telescopic driving source is connected to one side of the transmission connection, and the other side of the transmission connection is respectively connected to the clamping plate and the lifting plate. The linear telescopic driving source is extended so that the transmission connection drives the clamping plate and the lifting plate to move closer together, and the lifting plate lifts the composite plate, and the clamping plate contacts one side of the composite plate to clamp and fix it.

[0009] As a further optimization scheme of the present invention, the transmission connecting member includes a connecting plate, two limiting rails, two sliding connecting parts and two elastic connecting parts. One side of the connecting plate is fixed to the telescopic end of the linear telescopic driving source, and both ends of the connecting plate are fixed to the lifting plate through the sliding connecting parts. The two limiting rails are symmetrically distributed at the two ends of the lifting plate. A guide groove body is provided on the limiting rail, and the guide groove body includes a translation section and a descending section. Both ends of the lifting plate are slidably connected with the guide groove body on the corresponding side through a sliding shaft, and both ends of the connecting plate are fixed to the two ends of the clamping plate through the elastic connecting parts.

[0010] As a further optimization scheme of the present invention, the sliding connection part includes a fixed seat, a sliding seat and two connecting shafts. The fixed seat is fixed to the end of the connecting plate, the sliding seat is fixedly installed on one side of the jacking plate, the sliding seat sliding sleeve is arranged on the outer side of the fixed seat, and two opposite side surfaces of the sliding seat are provided with sliding grooves. Both sides of the fixed seat slide in cooperation with the sliding grooves on the corresponding sides through the connecting shafts.

[0011] As a further optimization scheme of the present invention, the elastic connecting part includes a support plate, a connecting slide rod and a support spring. The support plate is fixed to the end of the connecting plate. The connecting slide rod is fixedly installed on one side of the clamping plate, and its outer side is slidably connected to the upper end of the support plate. The support spring is sleeved on the outer side of the connecting slide rod, and its two ends are respectively fixed to the support plate and the clamping plate.

[0012] As a further optimization scheme of the present invention, the upper pressing assembly includes a first cylinder, an upper pressure plate and four first limiting guide rods. The cylinder is fixedly installed on the top of the pressing machine body, the top of the upper pressure plate is fixed to the telescopic end of the cylinder, the four limiting guide rods are equidistantly fixed on the top of the upper pressure plate, and the top ends of the four limiting guide rods slide upward and pass through the top of the pressing machine body.

[0013] As a further optimization scheme of the present invention, the lifting assembly includes a lifting frame, a contact frame, two second cylinders and four second limiting guide rods. The contact frame can be detachably installed on the top of the lifting frame. The two second cylinders are symmetrically distributed on both sides of the conveying mechanism. The telescopic ends of the two second cylinders are fixed to the bottom of the lifting frame. The four second limiting guide rods are equidistantly fixed to the bottom of the lifting frame. The outer sides of the four limiting guide rods are slidably connected to the pressing machine body.

[0014] As a further optimization scheme of the present invention, the conveying mechanism includes a belt conveying assembly and a limiting assembly. The belt conveying assembly is provided with two sinking sections. The two sides of the lifting frame are correspondingly embedded in the two sinking sections. The limiting assembly is arranged on the outside of the conveying assembly, and is used to perform rolling limit on both sides of the composite plate during the conveying process.

[0015] As a further optimization scheme of the present invention, the limit assembly includes an adjusting screw and two movable rails. The adjusting screw is rotatably installed on the outside of the laminating machine body. The two movable rails are symmetrically distributed on both sides of the belt conveyor assembly, and the bottoms thereof are slidingly connected to the inner side of the laminating machine body. Two rows of roller groups are provided on one side of the two movable rails close to the belt conveyor assembly, and a gap is provided between the two rows of roller groups. Both ends of the outer side of the adjusting screw are threadedly connected with driving plates, and the two driving plates are respectively fixed to the two movable rails.

[0016] As a further optimization solution of the present invention, the clamping assembly is arranged in the gap, and the fixed end of the linear telescopic driving source is fixed to the inner side of the movable track.

[0017] As a further optimization solution of the present invention, a protective layer is provided on the side of the clamping plate close to the conveying mechanism, and a smooth layer is provided on the side of the lifting plate close to the conveying mechanism.

[0018] The beneficial effects of the present invention are:

[0019] In the pressing mechanism provided in the present invention, two layers of polystyrene foam plastic composite boards with different densities can be pressed in steps. The high-density foam layer can be clamped on the circumference by a clamping component, and the high-density foam layer is initially pressed so that the high-density foam layer is subjected to the pressure of the upper pressing component alone. Then, the entire composite board is lifted by a lifting component, and the high-density foam layer and the low-density foam layer are pressed for a second time. This step-by-step pressing method ensures that each foam layer can be accurately pressed, so that the adhesive of each foam layer can be evenly squeezed, thereby solving the influence of the pressing force on different foam layers. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is a structural schematic diagram of a plate pressing and bonding device for composite plate manufacturing provided by the present invention;

[0021] Figure 2 It is a schematic diagram of the internal structure of a plate pressing and bonding device for manufacturing a composite plate provided by the present invention;

[0022] Figure 3 It is a structural schematic diagram of a conveying mechanism, a lifting component, and a clamping component in a plate pressing and bonding device for composite plate manufacturing provided by the present invention;

[0023] Figure 4 It is a structural schematic diagram of a local position of a moving track in a plate pressing and bonding device for composite plate manufacturing provided by the present invention;

[0024] Figure 5 It is a structural schematic diagram of a clamping assembly in a plate pressing and bonding device for manufacturing a composite plate provided by the present invention;

[0025] Figure 6 The present invention Figure 5 A local enlarged schematic diagram of the middle A;

[0026] Figure 7 The present invention Figure 5 A partial enlarged schematic diagram of point B in the middle;

[0027] Figure 8 It is a schematic diagram of the structure after the clamping plate and the composite plate are in contact in a plate pressing and bonding device for manufacturing a composite plate provided by the present invention;

[0028] Fig. 9 It is a schematic diagram of the structure between an upper pressing component, a lifting component and a pressing machine body in a plate pressing and bonding device for manufacturing a composite plate provided by the present invention;

[0029] Fig.10 It is a schematic structural diagram of a conveying mechanism and a pressing machine body in a plate pressing and bonding device for manufacturing a composite plate provided by the present invention;

[0030] Fig.11 It is a structural schematic diagram of a conveying mechanism in a plate pressing and bonding device for composite plate manufacturing provided by the present invention from a first viewing angle;

[0031] Fig.12 It is a structural schematic diagram of a conveying mechanism in a plate pressing and bonding device for composite plate manufacturing provided by the present invention from a second viewing angle.

[0032] In the figure: 1. Pressing machine body; 2. Conveying mechanism; 21. Belt conveying assembly; 22. Limiting assembly; 221. Adjusting screw; 222. Moving track; 223. Roller group; 224. Driving plate; 3. Pressing mechanism; 31. Upper pressing assembly; 311. First cylinder; 312. Upper pressing plate; 313. First limiting guide rod; 32. Lifting assembly; 321. Lifting frame; 322. Contact frame; 323. Second cylinder; 324. Second limiting guide rod; 33. Clamping assembly; 331. Clamping Plate; 332, lifting plate; 333, transmission connector; 3331, connecting plate; 3332, limiting track; 3333, guide trough; 3334, sliding shaft; 3335, fixed seat; 3336, sliding seat; 3337, connecting shaft; 3338, slide groove; 3339, support plate; 33310, connecting slide rod; 33311, supporting spring; 334, linear telescopic drive source; 4, upper cardboard; 5, high-density foam layer; 6, middle cardboard; 7, low-density foam layer; 8, lower cardboard. DETAILED DESCRIPTION

[0033] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0034] Please refer to Figures 1 to 5 A plate pressing and bonding device for composite plate manufacturing includes: a pressing machine body 1, a conveying mechanism 2 and a pressing mechanism 3. The conveying mechanism 2 is arranged on the pressing machine body 1 and is used for linearly conveying the composite plate.

[0035] The pressing mechanism 3 is arranged in the pressing machine body 1, and the pressing mechanism 3 includes an upper pressing component 31, a lifting component 32 and two clamping components 33. The upper pressing component 31 is installed on the inner top wall of the pressing machine body 1, and the lifting component 32 is embedded and installed on the top of the conveying mechanism 2 and aligned with the upper pressing component 31. The lifting component 32 is used to lift the composite sheet that reaches above it, so that the composite sheet is separated from the conveying mechanism 2; the two clamping components 33 are symmetrically arranged on both sides of the lifting component 32, and the clamping component 33 includes a clamping plate 331, a lifting plate 332, a transmission connecting piece 333 and a linear telescopic driving source 334. The lifting plate 332 is located below the clamping plate 331, and the distance between the lifting plate 332 and the lifting component 32 is larger than the distance between the clamping plate 331 and the lifting plate 332. The spacing of the lifting assembly 32 is short, and the telescopic end of the linear telescopic driving source 334 is connected to one side of the transmission connecting member 333, and the other side of the transmission connecting member 333 is respectively connected to the clamping plate 331 and the lifting plate 332. The linear telescopic driving source 334 can be an electric push rod. The linear telescopic driving source 334 is extended to make the transmission connecting member 333 drive the clamping plate 331 and the lifting plate 332 to move closer together. The lifting plate 332 first lifts the composite plate, and the clamping plate 331 contacts one side of the composite plate to clamp and fix it. The clamping plate 331 is provided with a protective layer on the side close to the conveying mechanism 2, and the protective layer can avoid wear on the composite plate. The lifting plate 332 is provided with a smooth layer on the side close to the conveying mechanism 2 to reduce the friction of the lifting plate 332.

[0036] It should be noted that when the above scheme is used to press the polystyrene foam composite board with two layers of different densities, the composite board to be pressed is placed on the conveying mechanism 2, and the conveying mechanism 2 drives the composite board to be translated to the preset pressing station inside the pressing machine body 1 and stops conveying. Then, the two linear telescopic drive sources 334 are extended at the same time, which can respectively drive the corresponding transmission connecting parts 333, the clamping plate 331 and the lifting plate 332 to move together and approach the composite board. One side of the lifting plate 332 first contacts the bottom side of the composite board, and then the two linear telescopic drive sources 334 are extended at the same time. Under the joint lifting action of the lifting plates 332, the composite sheet can be moved upward. After the lifting plates 332 lift the composite sheet to a preset maximum height, the clamping plates 331 just contact the sides of the composite sheet and continue to extend through the linear telescopic drive source 334, so that the two clamping plates 331 clamp the sides of the composite sheet, and the lifting plates 332 are driven by the transmission connector 333 to move downward and separate from the bottom of the composite sheet. At this time, the composite sheet is fixed under the clamping action of the two clamping plates 331. Since the height of the clamping plates 331 is preset, Figure 8As shown, only the high-density foam layer 5 and the middle layer of paperboard 6 are in contact with the clamping plate 331, and the low-density foam layer 7 and the lower layer of paperboard 8 are in a suspended state. After that, the top of the composite board can be pressed according to a preset pressure value by the upper pressing component 31. At this time, since the low-density foam layer 7 is in a relatively suspended state, the force generated during pressing is not easily transmitted to the low-density foam layer 7, so that a separate preliminary pressing process of the high-density foam layer 5 is achieved. After the preliminary pressing is completed, the linear telescopic driving source 334 is contracted, which can respectively drive the lifting plate 332 and the clamping plate 331 to contract and reset, so that the composite board is in contact with the conveying mechanism 2 again. At this time, the pressure of the upper pressing component 31 is adjusted, and the composite board is pressed again. The top of the composite board is pressed. At this time, since the low-density foam layer 7 and the bottom of the lower cardboard 8 are supported by the conveying mechanism 2, the force generated during the pressing can be directly transmitted to the low-density foam layer 7, thereby realizing the lamination of the low-density foam layer 7. Since the force during the first lamination did not reach the pressure required by the high-density foam layer 5, the high-density foam layer 5 can be pressed at the same time through the second pressing. In this way, the high-density foam layer 5 and the low-density foam layer 7 are pressed in steps, ensuring that each foam layer can be accurately pressed, so that the adhesive of each foam layer can be evenly squeezed to solve the influence of the pressing force on different foam layers.

[0037] Please refer to Figures 4 to 8The transmission connecting member 333 includes a connecting plate 3331, two limiting rails 3332, two sliding connecting parts and two elastic connecting parts. One side of the connecting plate 3331 is fixed to the telescopic end of the linear telescopic driving source 334. Both ends of the connecting plate 3331 are fixed to the lifting plate 332 through the sliding connecting parts. The two limiting rails 3332 are symmetrically distributed at both ends of the lifting plate 332. The limiting rails 3332 are provided with a guide groove body 3333. The guide groove body 3333 includes a translation section and a descending section. Both ends of the lifting plate 332 are slidably connected with the guide groove body 3333 on the corresponding side through a sliding shaft 3334. Both ends of the connecting plate 3331 are fixed to the two ends of the clamping plate 331 through the elastic connecting parts. The sliding connection part includes a fixed seat 3335, a sliding seat 3336 and two connecting shafts 3337. The fixed seat 3335 is fixed to the end of the connecting plate 3331. The sliding seat 3336 is fixedly installed on one side of the lifting plate 332. The sliding seat 3336 is slidably sleeved on the outer side of the fixed seat 3335. Two opposite side surfaces of the sliding seat 3336 are provided with sliding grooves 3338. Both sides of the fixed seat 3335 slide in cooperation with the sliding grooves 3338 on the corresponding side through the connecting shafts 3337. The elastic connection part includes a support plate 3339, a connecting slide rod 33310 and a support spring 33311. The support plate 3339 is fixed to the end of the connecting plate 3331. The connecting slide rod 33310 is fixedly installed on one side of the clamping plate 331, and its outer side is slidingly connected to the upper end of the support plate 3339. The support spring 33311 is sleeved on the outer side of the connecting slide rod 33310, and its two ends are respectively fixed to the support plate 3339 and the clamping plate 331.

[0038] It should be noted that when the transmission connection member 333 is in use, the linear telescopic driving source 334 is extended to drive the connecting plate 3331, the sliding connection part and the elastic connection part to move together, and the clamping plate 331 and the lifting plate 332 are translated together with the elastic connection part and the sliding connection part respectively. After the lifting plate 332 contacts the composite plate, the composite plate is lifted. During the translation of the lifting plate 332, the sliding shafts 3334 at both ends thereof slide along the guide groove 3333. When the translation section of the guide slot 3333 slides, the lifting plate 332 slides normally. When the lifting plate 332 lifts the composite plate to a preset height, the sliding shaft 3334 slides to the downward section of the guide slot 3333, and the clamping plate 331 just contacts the side of the composite plate. As the linear telescopic drive element continues to extend, the clamping plate 331 will not continue to move due to the resistance of the composite plate, and the support plate 3339 will begin to slide along the outer side of the connecting slide rod 33310. The support spring 33311 is squeezed at the same time, and the lifting plate 332 continues to translate under the driving action of the connecting plate 3331. At this time, the sliding shaft 3334 slides in the downward movement section of the guide groove body 3333, so that the lifting plate 332 moves downward synchronously and separates from the bottom of the composite plate, and the sliding seat 3336 slides downward with the lifting plate 332. Under the cooperative sliding limit action of the connecting shaft 3337 and the sliding groove 3338, the sliding seat 3336 can slide linearly along the outer side of the fixed seat 3335 stably until the sliding shaft 3334 slides to the end of the downward movement section of the guide groove body 3333, and the linear telescopic drive member stops extending. At this time, the two sides of the composite plate remain in a stable state under the clamping action of the two clamping plates 331. In this way, through the coordinated use of the transmission connecting member 333 and the linear telescopic drive member, the separation of the composite plate and the conveying mechanism 2 can be realized, and the side clamping and fixing of the composite plate are performed in sequence to meet the posture requirements of the initial pressing operation of the composite plate.

[0039] Please refer to the figure to Fig. 9 The upper pressing assembly 31 includes a first cylinder 311, an upper pressing plate 312 and four first limiting guide rods 313. The cylinder is fixedly installed on the top of the pressing machine body 1. The top of the upper pressing plate 312 is fixed to the telescopic end of the cylinder. The four limiting guide rods are fixed on the top of the upper pressing plate 312 at equal distances around the circumference. The top ends of the four limiting guide rods slide upward and pass through the top of the pressing machine body 1.

[0040] It should be noted that when the upper pressing assembly 31 is pressing the composite sheet, the first cylinder 311 extends downward, which can drive the upper pressing plate 312 to move downward and close to the composite sheet, and the limiting guide rod cooperates with the pressing machine body 1 to slide, thereby limiting the upper pressing plate 312 and making it move downward stably until the upper pressing plate 312 produces a preset force on the composite sheet, and the linear telescopic drive source 334 stops extending and drives the upper pressing plate 312 to move upward, shrink and reset.

[0041] Please refer to the figure to Fig. 9 The lifting assembly 32 includes a lifting frame 321, a contact frame 322, two second cylinders 323 and four second limiting guide rods 324. The contact frame 322 can be detachably installed on the top of the lifting frame 321. The suitable contact frame 322 can be selected for installation according to the actual size of the composite plate. The contact frame 322 and the lifting frame 321 are both rectangular frame structures. The two second cylinders 323 are symmetrically distributed on both sides of the conveying mechanism 2. The telescopic ends of the two second cylinders 323 are fixed to the bottom of the lifting frame 321. The four second limiting guide rods 324 are fixed to the bottom of the lifting frame 321 at equal distances around the circumference. The outer sides of the four limiting guide rods are slidably connected to the pressing machine body 1.

[0042] It should be noted that when the above-mentioned lifting assembly 32 is in use, it extends upward through the two second cylinders 323, which can drive the lifting frame 321 and the contact frame 322 to move upward together. The initial height of the top surface of the contact frame 322 is lower than the conveying plane of the conveying mechanism 2. When the top surface of the contact frame 322 contacts the composite sheet, it can drive the composite sheet to move upward together. After reaching the preset height, it stops extending, and then the composite sheet is subjected to a secondary pressing process through the upper pressing assembly 31.

[0043] Please refer to Figures 10 to 12 The conveying mechanism 2 includes a belt conveying assembly 21 and a limiting assembly 22. The belt conveying assembly 21 is provided with two sinking sections. The two sides of the lifting frame 321 are correspondingly embedded in the two sinking sections. The limiting assembly 22 is arranged on the outside of the conveying assembly, and is used to perform rolling limiting on both sides of the composite plate during the conveying process. The limiting assembly 22 includes an adjusting screw 221 and two moving rails 222. The adjusting screw 221 is rotatably mounted on the outside of the pressing machine body 1. The two moving rails 222 are symmetrically distributed on both sides of the belt conveying assembly 21. The bottom of the adjusting screw 221 is slidably connected to the inner side of the pressing machine body 1. The two moving rails 222 are provided with two rows of roller groups 223 on one side close to the belt conveying assembly 21. There is a gap between the two rows of roller groups 223. The two ends of the outer side of the adjusting screw 221 are threadedly connected with a driving plate 224. The thread directions of the thread grooves at the two ends of the outer side of the adjusting screw 221 are opposite. The two driving plates 224 are respectively fixed to the two moving rails 222. The clamping assembly 33 is disposed in the gap, and the fixed end of the linear telescopic driving source 334 is fixed to the inner side of the moving track 222 .

[0044] It should be noted that when the conveying mechanism 2 is in use, if the width of the composite sheet changes, the spacing between the two moving rails 222 can be adjusted. During the adjustment, the two driving plates 224 connected thereto can be driven to move toward each other by rotating the adjusting screw 221, and the two moving rails 222 follow the corresponding driving plates 224 to move synchronously until the spacing between the two moving rails 222 moves to the desired size. After the spacing adjustment is completed, the composite sheet can be directly placed from the feeding end of the belt conveyor assembly 21, so that the composite sheet lies flat on the conveying plane at the top of the belt conveyor assembly 21, and the composite sheet is driven to move horizontally into the laminating machine body 1 by the belt conveyor assembly 21. Since the gap is much smaller than the length of the composite sheet, the composite sheet can pass smoothly. After the composite sheet reaches the preset laminating station, the belt conveyor assembly 21 stops moving.

[0045] An example of the present specific implementation mode is described above, but the present embodiment is not limited to the above-mentioned specific implementation mode, which is merely illustrative and not restrictive. A person skilled in the art may make many forms inspired by the present embodiment, all of which are protected by the present embodiment.

Claims

1. A plate pressing and bonding device for manufacturing a composite plate, characterized in that: include: A pressing machine body (1), a conveying mechanism (2) and a pressing mechanism (3), wherein the conveying mechanism (2) is arranged on the pressing machine body (1) and is used for linearly conveying the composite plate material; The pressing mechanism (3) is arranged in a pressing machine body (1), and comprises an upper pressing assembly (31), a lifting assembly (32), and two clamping assemblies (33); the upper pressing assembly (31) is mounted on the top wall of the pressing machine body (1); the lifting assembly (32) is embedded and mounted on the top of the conveying mechanism (2) and aligned with the upper pressing assembly (31); the composite sheet material that reaches the upper portion of the composite sheet material is lifted by the lifting assembly (32), so that the composite sheet material is separated from the conveying mechanism (2); The two clamping assemblies (33) are symmetrically arranged on both sides of the lifting assembly (32), and the clamping assembly (33) includes a clamping plate (331), a lifting plate (332), a transmission connection (333) and a linear telescopic drive source (334). The lifting plate (332) is located below the clamping plate (331), and the distance between the lifting plate (332) and the lifting assembly (32) is shorter than the distance between the clamping plate (331) and the lifting assembly (32). The linear telescopic drive source (334) ) is connected to one side of the transmission connection member (333), and the other side of the transmission connection member (333) is respectively connected to the clamping plate (331) and the lifting plate (332), and the linear telescopic driving source (334) is extended, so that the transmission connection member (333) drives the clamping plate (331) and the lifting plate (332) to move together and close together, and the lifting plate (332) lifts the composite plate, and the clamping plate (331) contacts one side of the composite plate to clamp and fix it; The transmission connecting member (333) comprises a connecting plate (3331), two limiting rails (3332), two sliding connecting parts and two elastic connecting parts; one side of the connecting plate (3331) is fixed to the telescopic end of the linear telescopic driving source (334); both ends of the connecting plate (3331) are fixed to the lifting plate (332) via the sliding connecting parts; the two limiting rails (3332) are symmetrically distributed at both ends of the lifting plate (332); a guide groove body (3333) is provided on the limiting rail (3332); the guide groove body (3333) comprises a translation section and a descending section; both ends of the lifting plate (332) are slidably connected to the guide groove body (3333) on the corresponding side via a sliding shaft (3334); and both ends of the connecting plate (3331) are fixed to both ends of the clamping plate (331) via the elastic connecting parts; The sliding connection part comprises a fixed seat (3335), a sliding seat (3336) and two connecting shafts (3337); the fixed seat (3335) is fixed to the end of the connecting plate (3331); the sliding seat (3336) is fixedly mounted on one side of the lifting plate (332); the sliding seat (3336) is slidably sleeved on the outer side of the fixed seat (3335); two opposite side surfaces of the sliding seat (3336) are provided with sliding grooves (3338); both sides of the fixed seat (3335) slide in cooperation with the sliding grooves (3338) on the corresponding side through the connecting shafts (3337); The elastic connection portion comprises a support plate (3339), a connecting slide rod (33310) and a support spring (33311); the support plate (3339) is fixed to the end of the connecting plate (3331); the connecting slide rod (33310) is fixedly mounted on one side of the clamping plate (331), and its outer side is slidably connected to the upper end of the support plate (3339); the support spring (33311) is sleeved on the outer side of the connecting slide rod (33310), and its two ends are respectively fixed to the support plate (3339) and the clamping plate (331).

2. A plate pressing and bonding device for composite plate manufacturing according to claim 1, characterized in that: The upper pressing assembly (31) comprises a first cylinder (311), an upper pressing plate (312) and four first limiting guide rods (313); the cylinder is fixedly mounted on the top of the pressing machine body (1); the top of the upper pressing plate (312) is fixed to the telescopic end of the cylinder; the four limiting guide rods are equidistantly fixed on the top of the upper pressing plate (312); the top ends of the four limiting guide rods slide upward and penetrate the top of the pressing machine body (1).

3. A plate pressing and bonding device for composite plate manufacturing according to claim 2, characterized in that: The lifting assembly (32) comprises a lifting frame (321), a contact frame (322), two second air cylinders (323) and four second limiting guide rods (324); the contact frame (322) is detachably mounted on the top of the lifting frame (321); the two second air cylinders (323) are symmetrically distributed on both sides of the conveying mechanism (2); the telescopic ends of the two second air cylinders (323) are fixed to the bottom of the lifting frame (321); the four second limiting guide rods (324) are equidistantly fixed to the bottom of the lifting frame (321); and the outer sides of the four limiting guide rods are slidably connected to the pressing machine body (1).

4. A plate pressing and bonding device for composite plate manufacturing according to claim 3, characterized in that: The conveying mechanism (2) comprises a belt conveying assembly (21) and a limiting assembly (22); the belt conveying assembly (21) is provided with two sinking sections, the two sides of the lifting frame (321) are correspondingly embedded in the two sinking sections, and the limiting assembly (22) is arranged on the outside of the conveying assembly and is used to perform rolling limiting on both sides of the composite plate during the conveying process.

5. A plate pressing and bonding device for composite plate manufacturing according to claim 4, characterized in that: The limit assembly (22) comprises an adjusting screw (221) and two movable rails (222); the adjusting screw (221) is rotatably mounted on the outside of the pressing machine body (1); the two movable rails (222) are symmetrically distributed on both sides of the belt conveyor assembly (21); the bottoms of the movable rails are slidably connected to the inside of the pressing machine body (1); two rows of roller groups (223) are provided on one side of the two movable rails (222) close to the belt conveyor assembly (21); a gap is provided between the two rows of roller groups (223); both ends of the outer side of the adjusting screw (221) are threadedly connected to driving plates (224); the two driving plates (224) are respectively fixed to the two movable rails (222).

6. A plate pressing and bonding device for composite plate manufacturing according to claim 5, characterized in that: The clamping assembly (33) is arranged in the gap, and the fixed end of the linear telescopic driving source (334) is fixed to the inner side of the movable track (222).

7. A plate pressing and bonding device for composite plate manufacturing according to claim 1, characterized in that: A protective layer is provided on the side of the clamping plate (331) close to the conveying mechanism (2), and a smooth layer is provided on the side of the lifting plate (332) close to the conveying mechanism (2).

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