Anti-deformation high-compression-resistance polyvinyl chloride sheet pressing device
By designing a high-pressure resistant polyvinyl chloride sheet pressing device that is anti-deformed, the problem of high-pressure resistant polyvinyl chloride sheet easily deformed during the pressing process is solved. Achieve more stable shape and size, improving product quality.
Patent Information
- Application Number
- CN202420417844.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-05
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-03-05
AI Technical Summary
During the pressing process of high-pressure polyvinyl chloride sheets, existing devices directly apply pressure after heating, resulting in the sheet being easily deformed, such as bending, twisting, etc., affecting product quality and performance.
A high compression-resistant polyvinyl chloride sheet pressing device that is anti-deformed is designed, including heating assembly, lift assembly, rotating assembly, guide assembly, anti-deformation assembly and pressing assembly. The material is softened by heating the assembly, the lifting assembly drives the anti-deformation assembly to cover the sheet, the rotating assembly is easy to place, the guide assembly provides limit, the anti-deformation assembly disperses the pressure evenly, and the pressing assembly applies sufficient pressure to reduce deformation.
It effectively avoids deformation caused by uneven pressure, ensures the shape and dimensional stability of the sheet during the pressing process, and improves product quality and performance.
Smart Images
Figure CN222521854U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of high-pressure-resistant polyvinyl chloride sheet processing, in particular to a high-pressure-resistant polyvinyl chloride sheet pressing device that prevents deformation. Background Art
[0002] High-pressure polyvinyl chloride sheet is a widely used plastic material with the advantages of good chemical stability, corrosion resistance, insulation, flame retardancy and low cost. Therefore, it is widely used in the fields of construction, chemical industry, electricity, communication, etc. High-pressure polyvinyl chloride sheet is an important form of high-pressure polyvinyl chloride sheet with good processing performance and a wide range of applications, such as floors, ceilings, curtain walls, doors and windows, etc. When manufacturing high-pressure polyvinyl chloride sheets, a pressing process is usually adopted. The high-pressure polyvinyl chloride sheet is placed in a mold, heated at the bottom to soften it and make it easy to press, and pressed into a sheet by pressure. In the process of pressing the high-pressure polyvinyl chloride sheet, due to the influence of factors such as the physical properties of the material itself, the pressing temperature, and the pressure, the sheet is prone to deformation or stress, which will lead to adverse changes in the shape, size, surface quality, etc. of the sheet. The existing high-pressure polyvinyl chloride sheet pressing device usually heats the high-pressure polyvinyl chloride sheet to a certain temperature when pressing it and directly applies pressure. The sheet is not pressed tightly and is prone to deformation such as bending and twisting, which affects the quality and performance of the product. Utility Model Content
[0003] In order to overcome the problem that when the high-pressure PVC sheet pressing device is in operation, the existing high-pressure PVC sheet pressing device usually heats the high-pressure PVC sheet to a certain temperature and then directly applies pressure when pressing the high-pressure PVC sheet. The sheet is not pressed tightly and is prone to deformation such as bending and twisting, which affects the quality and performance of the product.
[0004] The technical scheme of the utility model is: a deformation-resistant high-pressure PVC sheet pressing device, comprising a bottom plate, a heating component, a lifting component, a rotating component, a guide component, an anti-deformation component and a pressing component; a heating component for heating the high-pressure PVC sheet to soften it and make it easy to press is arranged above the bottom plate, a lifting component is arranged on one side of the heating component, a rotating component is arranged above the lifting component, a guide component is arranged below the rotating component, the guide component is arranged on one side of the lifting component, an anti-deformation component for covering the high-pressure PVC sheet and evenly dispersing the pressure when pressing it is arranged on one side of the guide component, a pressing component is arranged above the bottom plate, and the pressing component is arranged above the heating component.
[0005] Preferably, by setting up a heating component, the high-compression-resistant polyvinyl chloride sheet can be heated to soften it and make it easier to be pressed into a required shape. By setting up a lifting component, the anti-deformation component can be driven to move so as to cover the high-compression-resistant polyvinyl chloride sheet. By rotating the rotating component to a certain angle, the high-compression-resistant polyvinyl chloride sheet can be conveniently placed in the mold. By setting up a guide component, a limiting function can be provided to prevent the anti-deformation component from tilting during the descent process and causing deformation when the high-compression-resistant polyvinyl chloride sheet is pressed. By setting up an anti-deformation component, the high-compression-resistant polyvinyl chloride sheet can be covered before pressing, and the pressure applied can be evenly distributed to avoid deformation caused by uneven force. By setting up a pressing component, sufficient pressure can be applied to ensure that the sheet can fit evenly and tightly on the mold, thereby reducing deformation.
[0006] Preferably, the heating component includes a pressing mold, a heating groove and a heating rod; a pressing mold is arranged above the bottom plate, a heating groove is opened on the side wall of the pressing mold, a heating rod is arranged inside the heating groove, multiple groups of heating rods are arranged, and both ends of the heating rods are fixedly connected to the inner side walls of the heating groove. When in use, starting multiple groups of heating rods can evenly heat the pressing mold, and a high-pressure resistant polyvinyl chloride sheet is placed in the pressing mold to soften it for easy pressing and forming.
[0007] Preferably, the lifting assembly includes an electronic telescopic rod and a connecting plate; an electronic telescopic rod is arranged on the left side of the heating tank, and multiple groups of electronic telescopic rods are arranged; a connecting plate is arranged above the electronic telescopic rod, and two groups of connecting plates are arranged. When in use, the movement of multiple groups of electronic telescopic rods is used to drive the connecting plate to move downward, which can drive the two groups of support plates to move downward, thereby driving the guide column, the sliding block and the pressing plate to move downward at the same time, which can provide power for the high-pressure resistant polyvinyl chloride sheet to be pressed and covered to prevent deformation during the pressing process.
[0008] Preferably, the rotating assembly includes a hinge and a support plate; a hinge is arranged above the connecting plate, the hinge is arranged in two groups, a support plate is arranged on one side of the hinge, the support plate is arranged in two groups, and the support plate is rotatably connected to the connecting plate through the hinge. When in use, the two groups of support plates are rotated to both sides by hand to drive the guide column to rotate, thereby driving the sliding block and the pressure plate to rotate synchronously, which can realize the effect of opening the two groups of pressure plates, making it convenient for the staff to place the high-pressure resistant polyvinyl chloride sheet in the pressing mold.
[0009] Preferably, the guide assembly includes a guide column and a positioning groove; a guide column is arranged under the support plate, and multiple groups of guide columns are arranged. The guide columns are arranged inside the positioning grooves. Positioning grooves are opened on the inner side walls of the pressing mold, and multiple groups of positioning grooves are opened. When in use, multiple groups of guide columns are inserted into the multiple groups of positioning grooves, which can limit the running trajectory of the support plate.
[0010] Preferably, the anti-deformation component includes a reset spring, a sliding block, a pressure plate and a sliding groove; a sliding groove is provided on one side of the guide column close to the inside of the pressing mold, and the sliding groove is provided with multiple groups. A sliding block is provided inside the sliding groove, and the sliding block is provided with multiple groups. The sliding block is slidably connected to the sliding groove. A reset spring is provided above the sliding block, and one end of the reset spring is fixedly connected to the internal top surface of the sliding groove, and the other end of the reset spring is fixedly connected to the sliding block. The reset spring is provided with multiple groups. A pressure plate is provided on one side of the sliding block, and two groups of pressure plates are provided. The sliding block is fixed to the pressure plate The two sets of support plates are rotated inward by hand during use, so that the two sets of pressure plates can be closed and contacted with the high-pressure resistant polyvinyl chloride sheets. The action force of multiple sets of return springs can be used to generate relative force on the sliding blocks, so that the multiple sets of sliding blocks can be driven to move downward in the multiple sets of sliding grooves to press the high-pressure resistant polyvinyl chloride sheets. After the pressing is completed, the action force of multiple sets of return springs can be used to drive the multiple sets of sliding blocks to move upward, thereby driving the two sets of pressure plates to move upward and return to the initial position, so that they are separated from the finished high-pressure resistant polyvinyl chloride sheets to avoid adhesion.
[0011] Preferably, the pressing assembly includes a hydraulic rod, a top plate and a movable mold; a hydraulic rod is arranged above the bottom plate, a top plate is arranged above the hydraulic rod, one end of the hydraulic rod is fixedly connected to the bottom plate, the other end of the hydraulic rod is fixedly connected to the top plate, a movable mold is arranged on the bottom surface of the top plate, and the movable mold is fixedly connected to the top plate. When in use, the dynamic hydraulic rod can drive the top plate and the movable mold to move downward, so that the movable mold moves the two sets of pressing plates downward, and provides sufficient pressure when pressing high-pressure resistant polyvinyl chloride sheets to ensure that the sheets can fit evenly and tightly on the mold, thereby reducing deformation.
[0012] Beneficial effects of the utility model:
[0013] 1. Compared with the traditional high-pressure PVC sheet pressing device, the sheet will bend, twist and other deformations under the action of pressure during operation, which affects the quality and performance of the finished product. By adopting the method of covering and pressing the high-pressure PVC sheet before pressing in the high-pressure PVC sheet pressing device, the high-pressure PVC sheet can be kept in a compacted state during the pressing process, avoiding deformation caused by uneven pressure;
[0014] 2. Manually move the two groups of support plates to rotate to both sides to drive the guide columns to rotate, and the guide columns drive the pressure plates to flip through the sliding blocks, open the two groups of pressure plates, place the high-pressure PVC sheets in the pressing mold, and then manually move the two groups of support plates inward to close the two groups of pressure plates and make them contact with the high-pressure PVC sheets. Use multiple groups of electronic telescopic rods to drive the connecting plates to move downward, insert multiple groups of guide columns into multiple groups of positioning grooves, and limit the running trajectory of the support plates, which can drive the two groups of support plates to move downward, and the support plates drive multiple groups of guide columns to move downward. The multiple groups of guide columns drive the pressure plates to move downward to continue to press the high-pressure PVC sheets. The reaction force of multiple groups of reset springs can buffer the sliding blocks, and the sliding blocks are moved and limited by the sliding connection between the sliding blocks and the sliding grooves to continuously press the high-pressure PVC sheets.
[0015] 3. Multiple sets of heating rods can be used to evenly heat the pressing mold, and the high-pressure PVC sheet is placed in the pressing mold to soften it. Multiple sets of electronic telescopic rods are used to drive the connecting plate to move downward, and the connecting plate drives the two sets of support plates to move downward, thereby driving the guide column, sliding block and pressing plate to move downward at the same time, which can provide power for the high-pressure PVC sheet to be pressed and covered to prevent deformation during the pressing process. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 The figure shows a right-side stereoscopic structural diagram of a high-pressure-resistant polyvinyl chloride sheet pressing device of the utility model;
[0017] Figure 2 The three-dimensional structure schematic diagram of the heating component and the guide component of the high-pressure PVC sheet pressing device of the utility model is shown;
[0018] Figure 3 The three-dimensional structure schematic diagram of the rotating assembly and the anti-deformation assembly of the high-pressure PVC sheet pressing device of the utility model is shown;
[0019] Figure 4 The figure shows a bottom-up three-dimensional structure diagram of a lifting assembly and a pressing assembly of a high-pressure PVC sheet pressing device of the utility model;
[0020] Explanation of the reference numerals: 1. bottom plate; 2. heating assembly; 3. lifting assembly; 4. rotating assembly; 5. guiding assembly; 6. anti-deformation assembly; 7. pressing assembly; 201. pressing mold; 202. heating groove; 203. heating rod; 301. electronic telescopic rod; 302. connecting plate; 401. hinge; 402. supporting plate; 501. guide column; 502. positioning groove; 601. reset spring; 602. sliding block; 603. pressing plate; 604. sliding groove; 701. hydraulic rod; 702. top plate; 703. moving mold. DETAILED DESCRIPTION
[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0022] See also Figure 1 The utility model provides an embodiment: a deformation-resistant high-pressure PVC sheet pressing device, comprising a bottom plate 1; characterized in that it also includes a heating component 2, a lifting component 3, a rotating component 4, a guiding component 5, an anti-deformation component 6 and a pressing component 7; a heating component 2 for heating the high-pressure PVC sheet to soften it and make it easy to press is arranged above the bottom plate 1, a lifting component 3 is arranged on one side of the heating component 2, a rotating component 4 is arranged above the lifting component 3, a guiding component 5 is arranged below the rotating component 4, the guiding component 5 is arranged on one side of the lifting component 3, and an anti-deformation component 6 for covering the high-pressure PVC sheet and evenly dispersing the pressure when pressing the high-pressure PVC sheet is arranged on one side of the guiding component 5, a pressing component 7 is arranged above the bottom plate 1, and the pressing component 7 is arranged above the heating component 2.
[0023] See also Figure 2 In this embodiment, the heating assembly 2 includes a pressing mold 201, a heating groove 202 and a heating rod 203; a pressing mold 201 is arranged above the bottom plate 1, a heating groove 202 is opened on the side wall of the pressing mold 201, a heating rod 203 is arranged inside the heating groove 202, and multiple groups of heating rods 203 are arranged, and both ends of the heating rods 203 are fixedly connected to the inner side walls of the heating groove 202. When in use, starting multiple groups of heating rods 203 can evenly heat the pressing mold 201, and the high-pressure resistant polyvinyl chloride sheet is placed. It is placed in the pressing mold 201 to soften it for easy pressing and forming. The guide component 5 includes a guide column 501 and a positioning groove 502; a guide column 501 is arranged below the support plate 402, and multiple groups of guide columns 501 are arranged. The guide column 501 is arranged inside the positioning groove 502. The inner side wall of the pressing mold 201 is provided with a positioning groove 502, and multiple groups of positioning grooves 502 are provided. When in use, multiple groups of guide columns 501 are inserted into multiple groups of positioning grooves 502, which can limit the running trajectory of the support plate 402.
[0024] See also Figure 3In this embodiment, the rotating assembly 4 includes a hinge 401 and a support plate 402; a hinge 401 is arranged above the connecting plate 302, and two groups of hinges 401 are arranged. A support plate 402 is arranged on one side of the hinge 401, and two groups of support plates 402 are arranged. The support plates 402 are rotatably connected with the connecting plate 302 through the hinge 401. When in use, the two groups of support plates 402 are rotated to both sides by hand to drive the guide column 501 to rotate, thereby driving the sliding block 602 and the pressure plate 603 to rotate synchronously. The two groups of pressing plates 603 can be opened to facilitate the staff to place the high-pressure resistant polyvinyl chloride sheet in the pressing mold 201. The anti-deformation component 6 includes a reset spring 601, a sliding block 602, a pressing plate 603 and a sliding groove 604; a sliding groove 604 is provided on one side of the guide column 501 close to the inside of the pressing mold 201, and the sliding groove 604 is provided with multiple groups. The sliding block 602 is provided inside the sliding groove 604, and the sliding block 602 is provided with multiple groups. The sliding block 602 and the sliding groove 604 are connected. Sliding connection, a return spring 601 is arranged above the sliding block 602, one end of the return spring 601 is fixedly connected to the inner top surface of the sliding groove 604, and the other end of the return spring 601 is fixedly connected to the sliding block 602. Multiple groups of return springs 601 are arranged, and a pressure plate 603 is arranged on one side of the sliding block 602. The pressure plate 603 is arranged in two groups. The sliding block 602 is fixedly connected to the pressure plate 603. When in use, the two groups of support plates 402 are rotated inward by hand to close the two groups of pressure plates 603. And in contact with the high-pressure PVC sheet, the action force of multiple sets of return springs 601 can generate a relative force on the sliding block 602, which can drive the multiple sets of sliding blocks 602 to move downward in the multiple sets of sliding grooves 604 to press the high-pressure PVC sheet. After the pressing is completed, the action force of multiple sets of return springs 601 can drive the multiple sets of sliding blocks 602 to move upward, thereby driving the two sets of pressing plates 603 to move upward and return to the initial position, so that it is separated from the finished high-pressure PVC sheet to avoid adhesion.
[0025] See also Figure 4In this embodiment, the lifting assembly 3 includes an electronic telescopic rod 301 and a connecting plate 302; the electronic telescopic rod 301 is arranged on the left side of the heating tank 202, and multiple groups of electronic telescopic rods 301 are arranged. A connecting plate 302 is arranged above the electronic telescopic rod 301, and two groups of connecting plates 302 are arranged. When in use, the movement of multiple groups of electronic telescopic rods 301 drives the connecting plate 302 to move downward, which can drive the two groups of support plates 402 to move downward, thereby driving the guide column 501, the sliding block 602 and the pressing plate 603 to move downward at the same time, which can provide power for the high-pressure PVC sheet to be pressed and covered to prevent deformation during the pressing process. The pressing assembly 7 includes Hydraulic rod 701, top plate 702 and movable mold 703; a hydraulic rod 701 is arranged above the bottom plate 1, a top plate 702 is arranged above the hydraulic rod 701, one end of the hydraulic rod 701 is fixedly connected to the bottom plate 1, the other end of the hydraulic rod 701 is fixedly connected to the top plate 702, a movable mold 703 is arranged on the bottom surface of the top plate 702, and the movable mold 703 is fixedly connected to the top plate 702. When in use, starting the hydraulic rod 701 can drive the top plate 702 and the movable mold 703 to move downward, so that the movable mold 703 moves the two sets of pressing plates 603 downward, providing sufficient pressure when pressing high-pressure resistant polyvinyl chloride sheets to ensure that the sheets can fit evenly and tightly on the mold, thereby reducing deformation.
[0026] When the high-pressure PVC sheet pressing device is running, the two groups of support plates 402 are manually moved to rotate to both sides to drive the guide column 501 to rotate, and the guide column 501 drives the pressing plate 603 to flip through the sliding block 602, and the two groups of pressing plates 603 are opened, and the high-pressure PVC sheet is placed in the pressing mold 201. Then, the two groups of support plates 402 are manually moved inward to close the two groups of pressing plates 603 and contact the high-pressure PVC sheet, and the connecting plate 302 is driven downward by multiple groups of electronic telescopic rods 301. The multiple groups of guide columns 501 are inserted into the multiple groups of positioning grooves 502 to limit the running trajectory of the support plate 402, which can drive the two groups of support plates 402 to move downward, and the support plate 402 drives the multiple groups of guide columns 501 to move downward. The multiple groups of guide columns 501 drive the pressing plate 603 to move downward to continue to press the high-pressure PVC sheet, and the multiple groups of electronic telescopic rods 301 are used to drive the connecting plate 302 to move downward. The reaction force of the multiple groups of reset springs 601 can buffer the sliding block 602. The sliding block 602 is moved and limited by the sliding connection between the sliding block 602 and the sliding groove 604, and the high-pressure PVC sheet is continuously pressed. The pressing mold 201 is evenly heated by the multiple groups of heating rods 203, and the high-pressure PVC sheet is placed in the pressing mold 201 to soften it. The top plate 702 and the movable mold 703 are pushed downward by the hydraulic rod 701, so that the movable mold 703 presses the two groups of pressing plates 603, and provides sufficient pressure to press the high-pressure PVC sheet into shape when pressing the high-pressure PVC sheet. After the pressing is completed, the multiple groups of reset springs 601 are used to reset the multiple groups of sliding blocks 602 upward, thereby driving the two groups of pressing plates 603 to move upward back to the initial position, so that they are separated from the finished high-pressure PVC sheet to avoid adhesion.
[0027] Through the above steps, the high-pressure PVC sheet can be heated by setting the heating component 2 to soften it and make it easy to be pressed into a required shape. The lifting component 3 can drive the anti-deformation component 6 to move so as to cover the high-pressure PVC sheet. The rotating component 4 can be rotated to a certain angle to conveniently place the high-pressure PVC sheet in the mold. The guide component 5 can provide a limiting effect to prevent the anti-deformation component 6 from tilting during the descent process and causing deformation when the high-pressure PVC sheet is pressed. The anti-deformation component 6 can be used to cover the high-pressure PVC sheet before pressing, and the pressure on the high-pressure PVC sheet is evenly distributed to avoid deformation caused by uneven force. The pressing component 7 can apply sufficient pressure to ensure that the sheet can fit evenly and tightly on the mold, thereby reducing deformation.
[0028] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.
Claims
1. A deformation-resistant high-pressure polyvinyl chloride sheet pressing device, comprising a bottom plate (1); characterized in that: The invention also comprises a heating component (2), a lifting component (3), a rotating component (4), a guiding component (5), an anti-deformation component (6) and a pressing component (7); a heating component (2) for heating a high-pressure-resistant polyvinyl chloride sheet to soften it and make it easier to press is arranged above the bottom plate (1); a lifting component (3) is arranged on one side of the heating component (2); a rotating component (4) is arranged above the lifting component (3); a guiding component (5) is arranged below the rotating component (4); the guiding component (5) is arranged on one side of the lifting component (3); an anti-deformation component (6) for covering the high-pressure-resistant polyvinyl chloride sheet and evenly dispersing the pressure when pressing the sheet is arranged on one side of the guiding component (5); a pressing component (7) is arranged above the bottom plate (1); and the pressing component (7) is arranged above the heating component (2).
2. The anti-deformation high-pressure PVC sheet pressing device according to claim 1, characterized in that: The heating component (2) comprises a pressing mold (201), a heating groove (202) and a heating rod (203); the pressing mold (201) is arranged above the bottom plate (1); the side wall of the pressing mold (201) is provided with a heating groove (202); the interior of the heating groove (202) is provided with a heating rod (203); the heating rod (203) is arranged in multiple groups; and both ends of the heating rod (203) are fixedly connected to the inner side wall of the heating groove (202).
3. The anti-deformation high-pressure PVC sheet pressing device according to claim 2, characterized in that: The lifting assembly (3) comprises an electronic telescopic rod (301) and a connecting plate (302); the electronic telescopic rod (301) is arranged on the left side of the heating tank (202), and multiple groups of the electronic telescopic rods (301) are arranged; a connecting plate (302) is arranged above the electronic telescopic rod (301), and two groups of the connecting plates (302) are arranged.
4. The anti-deformation high-pressure PVC sheet pressing device according to claim 3, characterized in that: The rotating assembly (4) comprises a hinge (401) and a support plate (402); a hinge (401) is arranged above the connecting plate (302), two groups of hinges (401) are arranged, a support plate (402) is arranged on one side of the hinge (401), two groups of support plates (402) are arranged, and the support plate (402) is rotatably connected to the connecting plate (302) via the hinge (401).
5. The anti-deformation high-pressure PVC sheet pressing device according to claim 4, characterized in that: The guide assembly (5) comprises a guide column (501) and a positioning groove (502); the guide column (501) is arranged below the support plate (402), the guide column (501) is arranged in multiple groups, the guide column (501) is arranged inside the positioning groove (502), the inner side wall of the pressing mold (201) is provided with a positioning groove (502), and the positioning groove (502) is provided in multiple groups.
6. The anti-deformation high-pressure PVC sheet pressing device according to claim 5, characterized in that: The anti-deformation component (6) comprises a reset spring (601), a sliding block (602), a pressing plate (603) and a sliding groove (604); a sliding groove (604) is provided on one side of the guide column (501) close to the inside of the pressing mold (201); the sliding groove (604) is provided in multiple groups; a sliding block (602) is arranged inside the sliding groove (604); the sliding block (602) is provided in multiple groups; the sliding block (602) is slidably connected to the sliding groove (604); a reset spring (601) is arranged above the sliding block (602); one end of the reset spring (601) is fixedly connected to the inner top surface of the sliding groove (604); the other end of the reset spring (601) is fixedly connected to the sliding block (602); the reset spring (601) is provided in multiple groups; a pressing plate (603) is provided on one side of the sliding block (602); the pressing plate (603) is provided in two groups; the sliding block (602) is fixedly connected to the pressing plate (603).
7. The anti-deformation high-pressure PVC sheet pressing device according to claim 3, characterized in that: The pressing assembly (7) comprises a hydraulic rod (701), a top plate (702) and a movable die (703); the hydraulic rod (701) is arranged above the bottom plate (1), the top plate (702) is arranged above the hydraulic rod (701), one end of the hydraulic rod (701) is fixedly connected to the bottom plate (1), the other end of the hydraulic rod (701) is fixedly connected to the top plate (702), the movable die (703) is arranged on the bottom surface of the top plate (702), and the movable die (703) is fixedly connected to the top plate (702).