A new flexible hot press forming die

Abstract

The application relates to the technical field of hot press forming, and particularly discloses a novel flexible hot press forming die, which comprises a lower die and an upper die arranged above the lower die in a corresponding mode, a containing groove for containing a workpiece is arranged at the top of the lower die, the containing groove is arranged along the length direction of the lower die, and the opening direction of the containing groove is towards the upper die; an elastic compensation mechanism is arranged at the position corresponding to the containing groove of the upper die, and the elastic compensation mechanism is used for compensating the gap between the workpiece and the upper die. After the workpiece is placed in the containing groove, the elastic compensation mechanism can dynamically fill the gap between the workpiece and the upper die, so that the workpiece surface can be subjected to pressure and heat conduction, the bonding points on the workpiece surface are prevented from being not adhered and being hollow, and the application has the effect of improving the hot press quality of the workpiece.

Description

Technical Field

[0001] This application relates to the field of hot pressing molding technology, and in particular to a novel flexible hot pressing molding die. Background Technology

[0002] Thermoforming technology, as a key processing technique, directly impacts product quality and production efficiency. In the automotive manufacturing industry, silicone foam, with its elasticity, acts as a cushion to protect electronic components. Workpieces made by thermoforming silicone foam coated with conductive fabric are called conductive foam, enabling electrical conductivity between circuit boards and electronic components in automobiles.

[0003] In related technologies, during the hot pressing process, due to the elasticity of silicone cotton, the workpieces to be hot pressed may exhibit certain dimensional differences. Therefore, two receiving grooves of different heights are first precisely wire-cut into the side cross-section of the lower mold steel of a certain thickness to accommodate the largest and smallest workpieces. The receiving grooves are then connected to the other cross-section to form a continuous flow, consistent with the cross-sectional shape of the product. The upper mold is then used to heat the workpiece. Simultaneously, a traction machine is used to pull the hot-pressed workpiece, ensuring the continuity of the processing.

[0004] In practical use, it was found that due to the limitations of the material in the lower mold structure, the two receiving groove structures are fixed and cannot be flexibly adjusted. This results in gap errors between workpieces of different sizes and the upper mold when they are in the receiving groove during the hot pressing process. Defects such as non-stickiness and voids are prone to occur at the joint points of silicone cotton and conductive cloth, making it difficult to guarantee product quality. Utility Model Content

[0005] To improve the quality of workpieces, this application provides a novel flexible hot pressing mold that has the effect of improving workpiece quality.

[0006] The novel flexible hot pressing molding die provided in this application adopts the following technical solution: A novel flexible hot pressing molding die includes a lower die and an upper die correspondingly disposed above the lower die. The lower die has a receiving groove on its top for accommodating a workpiece. The receiving groove is opened along the length of the lower die and the opening direction of the receiving groove faces the upper die. The upper die is provided with an elastic compensation mechanism at the position corresponding to the receiving groove. The elastic compensation mechanism is used to compensate for the gap between the workpiece and the upper die.

[0007] By adopting the above technical solution, after the workpiece is placed in the receiving groove, the elastic compensation mechanism can dynamically fill the gap between the workpiece and the upper mold, so that the surface of the workpiece can be subjected to pressure and heat conduction, reducing the occurrence of non-sticking, voids and other issues at the joint points of the workpiece surface, which is conducive to improving the quality of hot pressing of the workpiece.

[0008] Optionally, the upper mold has a sliding groove at its top, with the opening of the sliding groove facing the lower mold. The elastic compensation mechanism includes an elastic element disposed at the bottom of the sliding groove, a sliding block disposed on the elastic element, and a compensation block disposed on the sliding block. The sliding block is located between the elastic element and the compensation block. The sliding block is slidably connected in the sliding groove, and the compensation block is slidably connected in the receiving groove. The width of the compensation block is adapted to the opening width of the receiving groove.

[0009] By adopting the above technical solution, the compression spring drives the sliding block to move downward through the elastic force, and at the same time the sliding block drives the compensation block to move downward until it abuts against the surface of the workpiece. At this time, the sliding block flexibly fills the gap between the workpiece and the lower mold, which is conducive to adapting to hot pressing of workpieces of various sizes and effectively improving the hot pressing efficiency. Under the action of its own gravity and elastic force, the compensation block can flexibly generate a vertical sensing force on the workpiece, so that the surface of the workpiece is in close contact with the compensation block, which is conducive to the stability of heat conduction.

[0010] Optionally, limiting grooves are formed on both sides of the inner wall of the sliding groove along the height direction, and limiting blocks are provided on both side walls of the sliding block, with the limiting blocks slidably connected in the limiting grooves.

[0011] By adopting the above technical solution, the embedded cooperation between the limiting block and the limiting groove can restrict the lateral movement of the sliding block during vertical movement, which helps to reduce the situation where the compensation block and the workpiece are offset and fitted due to the offset of the sliding block, and effectively improves the stability of the movement of the compensation block.

[0012] Optionally, the bottom of the sliding groove is provided with a placement groove, which is connected to the sliding groove. The elastic element is located in the placement groove, and the end of the elastic element away from the sliding block is fixed to the bottom of the placement groove.

[0013] By adopting the above technical solution, the placement groove can reduce the lateral offset and tilt of the elastic element during compression and reset, so that the elastic element transmits elastic force in the vertical direction, which in turn helps to reduce the local height difference of the compensation block and improves the stability of the expansion and contraction of the compensation block.

[0014] Optionally, the compensation block and the sliding block are detachably connected.

[0015] By adopting the above technical solution, when the surface of the compensation block is worn, the compensation block can be replaced individually, which helps to reduce maintenance costs.

[0016] Optionally, a locking member is provided on the top of the upper mold, and the locking member passes through the lower mold and is threadedly connected to the lower mold.

[0017] By adopting the above technical solution, the upper and lower molds are threadedly fixed by locking components, reducing mold displacement caused by equipment vibration during hot pressing, which helps to improve the stability of workpiece hot pressing.

[0018] Optionally, a handle ring is provided on both sides of the sliding block.

[0019] By adopting the above technical solution, the operator can grab the sliding block with the handle and then put the sliding block into the sliding groove, which is convenient to operate.

[0020] Optionally, heating wires are provided inside both the upper and lower molds.

[0021] By adopting the above technical solution, the heating wire of the upper mold can directly heat the inner wall of the receiving tank, and the heat of the heating wire of the lower mold is conducted to the compensation block through the sliding groove, so that the temperature of the compensation block and the inner wall of the receiving tank rises synchronously, which helps to ensure that the workpiece is heated evenly.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. After the workpiece is placed in the receiving groove, the elastic compensation mechanism can dynamically fill the gap between the workpiece and the upper mold, so that the surface of the workpiece can be subjected to pressure and heat conduction, reducing the occurrence of non-sticking, voids and other issues at the joint points on the workpiece surface, which is beneficial to improving the quality of hot pressing of the workpiece. 2. The compression spring drives the sliding block downward through its elastic force, and the sliding block in turn drives the compensation block downward until it comes into contact with the workpiece surface. At this time, the sliding block flexibly fills the gap between the workpiece and the lower mold, which is conducive to adapting to hot pressing of workpieces of various sizes and effectively improving the hot pressing efficiency. Under the action of its own weight and elastic force, the compensation block can flexibly generate a vertical sensing force on the workpiece, so that the surface of the workpiece is in close contact with the compensation block, which is conducive to the stability of heat conduction. 3. The embedded fit between the limiting block and the limiting groove can restrict the lateral movement of the sliding block during vertical movement, which helps to reduce the situation where the compensation block and the workpiece are offset due to the offset of the sliding block, and effectively improves the stability of the movement of the compensation block. Attached Figure Description

[0023] Figure 1 This is a cross-sectional view of the novel flexible hot pressing mold of this application; Figure 2 This is a bottom view of the upper part of the novel flexible hot pressing mold of this application. Figure 3 This is a schematic diagram of the structure of the sliding block, compensation block and limiting block of the novel flexible hot pressing mold of this application.

[0024] Reference numerals in the attached drawings: 1. Lower mold; 2. Upper mold; 3. Receiving groove; 4. Elastic compensation mechanism; 41. Elastic component; 42. Sliding block; 43. Compensation block; 5. Sliding groove; 6. Limiting groove; 7. Limiting block; 8. Placement groove; 9. Locking component; 10. Handle ring. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0026] This application discloses a novel flexible hot pressing molding die, referring to... Figure 1 The system includes an upper mold 2 and a lower mold 1, which are arranged opposite to each other, with the lower mold 1 located below the upper mold 2. A receiving groove 3 is provided on the side of the lower mold 1 closest to the upper mold 2, penetrating both side walls of the lower mold 1 and extending along its length. The receiving groove 3 is used to accommodate the workpiece to be hot-pressed. An elastic compensation mechanism 4 is provided on the side of the upper mold 2 closest to the lower mold 1, with the opening of the receiving groove 3 facing the elastic compensation mechanism 4. The elastic compensation mechanism 4 absorbs the gap error caused by the elasticity of the silicone cotton, which helps to compensate for the gap between workpieces of different sizes and the upper mold 2, allowing multiple hot-pressing surfaces of the workpiece to be effectively hot-pressed. This ensures proper adhesion between the silicone cotton and the conductive cloth, thereby improving the quality of the workpiece.

[0027] Reference Figure 1 The elastic compensation mechanism 4 includes a sliding block 42, a compensation block 43, and an elastic element 41. The sliding block 42 is located between the compensation block 43 and the elastic element 41. The compensation block 43 is located at the bottom of the sliding block 42. The width of the compensation block 43 is adapted to the opening width of the receiving groove 3 on the side near the upper mold 2. The compensation block 43 is detachably connected to the sliding block 42 by means of bolts and nuts, which facilitates the disassembly and replacement of the compensation block 43 to adapt to workpieces of different sizes.

[0028] Reference Figure 1 The upper mold 2 has a sliding groove 5 on the side near the lower mold 1. The sliding groove 5 is opened along the length of the upper mold 2 and passes through the two side walls of the upper mold 2. The receiving groove 3 is connected to the sliding groove 5. The sliding block 42 is slidably connected in the sliding groove 5 along the depth direction of the sliding groove 5. The elastic element 41 is located above the sliding block 42. One end of the elastic element 41 is welded and fixed to the bottom of the sliding groove 5, and the other end is welded and fixed to the top of the sliding block 42.

[0029] In this embodiment, the elastic element 41 is a compression spring. The compression spring drives the sliding block 42 to slide downward in the sliding groove 5, and then the sliding block 42 drives the compensation block 43 to slide downward in the receiving groove 3 until the compensation block 43 abuts against the bottom of the workpiece, effectively compensating for the gap between the bottom of the workpiece and the upper mold 2. Heating wires are provided inside both the lower mold 1 and the upper mold 2. The upper mold 2 and the lower mold 1 are heated at the same temperature. The heat from the upper mold 2 is conducted to the sliding block 42 and then to the bottom of the workpiece through the compensation block 43, which facilitates hot pressing of the bottom of the workpiece and makes the workpiece heated evenly. The flexible movement of the compensation block 43 changes the size of the cavity in the receiving groove 3, reducing the need for multiple workpieces to be hot pressed to move in multiple receiving cavities, and effectively improving the processing efficiency of the workpiece.

[0030] Reference Figure 1 and Figure 2 The bottom of the sliding groove 5 is provided with multiple placement grooves 8 along its length. The multiple placement grooves 8 are spaced apart and are connected to the sliding groove 5. The end of the compression spring away from the sliding block 42 is welded and fixed to the bottom of the placement groove 8. The placement groove 8 can reduce the tilting of the compression spring during compression or extension, which is beneficial to improving the stability of the compression spring during operation.

[0031] Reference Figure 1 , Figure 2 and Figure 3 Limiting grooves 6 are provided on both sides of the inner wall of the sliding groove 5. The limiting grooves 6 are provided along the depth direction of the sliding groove 5. The sliding block 42 is integrally formed with a limiting block 7 corresponding to the position of the limiting groove 6. The limiting block 7 is slidably connected in the limiting groove 6, which helps to reduce the forward and backward displacement of the sliding block 42 during the sliding process and helps to improve the accuracy and stability of the compensation block 43 abutting the workpiece.

[0032] Reference Figure 1 Locking elements 9 are provided on both sides of the top of the upper mold 2. In this embodiment, the locking elements 9 are bolts. After passing through the upper mold 2, the locking elements 9 are threadedly connected to the lower mold 1, so that the upper mold 2 and the lower mold 1 are tightly combined, reducing vibration and displacement of the upper mold 2 and the lower mold 1, and improving the stability of the lower mold 1 and the upper mold 2 in hot pressing the workpiece.

[0033] Reference Figure 1 Both sides of the sliding block 42 are welded and fixed with handle rings 10, which makes it easy for operators to install and disassemble the sliding block 42 and improves convenience.

[0034] The implementation principle of the novel flexible hot pressing mold disclosed in this application is as follows: After the workpiece to be hot pressed is placed into the receiving groove 3, the compression spring will release its elastic force to push the sliding block 42 to slide downward. At the same time, the sliding block 42 will drive the compensation block 43 to slide downward synchronously until the compensation block 43 is in close contact with the side of the workpiece near the upper mold 2, thereby filling the gap between the workpiece and the upper mold 2. This allows the side of the workpiece near the upper mold 2 to be hot pressed, thereby ensuring normal adhesion of the joint points on the workpiece. This helps to reduce voids, cracks, and other phenomena, and improves the quality of the workpiece. The sliding block 42 slides flexibly in the receiving groove 3, which can compensate for the gap between workpieces of various sizes and the upper mold 2, reducing the need for multiple workpieces to be moved in multiple receiving grooves 3, and effectively improving processing efficiency.

[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A novel flexible hot-press forming mold, comprising a lower mold (1) and an upper mold (2) correspondingly disposed above the lower mold (1), characterized in that: The lower mold (1) has a receiving groove (3) on its top for accommodating the workpiece. The receiving groove (3) is opened along the length of the lower mold (1). The opening of the receiving groove (3) faces the upper mold (2). The upper mold (2) is provided with an elastic compensation mechanism (4) at the position corresponding to the receiving groove (3). The elastic compensation mechanism (4) is used to compensate for the gap between the workpiece and the upper mold (2).

2. The novel flexible hot-press forming mold according to claim 1, characterized in that, The upper mold (2) has a sliding groove (5) on its top, and the opening of the sliding groove (5) faces the lower mold (1). The elastic compensation mechanism (4) includes an elastic element (41) disposed at the bottom of the sliding groove (5), a sliding block (42) disposed on the elastic element (41), and a compensation block (43) disposed on the sliding block (42). The sliding block (42) is located between the elastic element (41) and the compensation block (43). The sliding block (42) is slidably connected in the sliding groove (5), and the compensation block (43) is slidably connected in the receiving groove (3). The width of the compensation block (43) is adapted to the opening width of the receiving groove (3).

3. The novel flexible hot-press forming mold according to claim 2, characterized in that, Limiting grooves (6) are provided on both sides of the inner wall of the sliding groove (5) along the height direction. Limiting blocks (7) are provided on both sides of the sliding block (42). The limiting blocks (7) are slidably connected in the limiting grooves (6).

4. The novel flexible hot-press forming mold according to claim 2, characterized in that, The bottom of the sliding groove (5) is provided with a placement groove (8), which is connected to the sliding groove (5). The elastic element (41) is located in the placement groove (8), and the end of the elastic element (41) away from the sliding block (42) is fixed to the bottom of the placement groove (8).

5. The novel flexible hot-press forming mold according to claim 2, characterized in that, The compensation block (43) and the sliding block (42) are detachably connected.

6. The novel flexible hot-press forming mold according to claim 1, characterized in that, The upper mold (2) is provided with a locking member (9) at its top, and the locking member (9) passes through the lower mold (1) and is threadedly connected to the lower mold (1).

7. The novel flexible hot-press forming mold according to claim 2, characterized in that, Both sides of the sliding block (42) are provided with handles (10).

8. The novel flexible hot-press forming mold according to claim 1, characterized in that, Heating wires are provided inside both the upper mold (2) and the lower mold (1).

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