Thermocompression bonding device for plastic parts

Abstract

The utility model discloses a thermocompression bonding device for a plastic part, and relates to the technical field of plastic processing. The device comprises a processing shell, the inner wall of the processing shell is fixedly connected with a workbench, the upper side of the workbench is provided with a lower die, the processing shell is internally provided with an upper die matched with the lower die, the lower side of the inner wall of the lower die is provided with a mounting groove, and the inner wall of the mounting groove is in sliding fit with a top plate. By arranging the sealing plate, when a formed workpiece is demoulded, the control valve on the air outlet pipe is closed, so that air enters the mounting groove, the sealing plate moves upwards to drive the ejection plate to eject the workpiece along with the increase of air pressure, and the baffle is ejected open by the L-shaped rod along with the movement of the sealing plate; and redundant gas flows into the die cavity through the ventilation groove, the machined part is cooled again, and a worker can take the machined part conveniently. And the cooling mechanism is arranged and used for cooling the machined part, and the hot-pressing forming effect of the plastic part is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of plastic processing, in particular to a hot pressing device for plastic parts. Background Art

[0002] Since the beginning of the 21st century, plastic parts have been used more and more widely. They are needed in almost all industries such as mobile phones, computers, communications, electrical appliances, mechanical equipment, etc. Therefore, the production technology of plastic parts has gradually developed and grown. The plastic parts are hot pressed, that is, the plastic parts are heated and then pressure is applied to modify them to achieve a specified shape.

[0003] A Chinese patent with application number CN202223572051.0 discloses a hot pressing device for plastic parts, including a main box body, a box door installed on the main box body, an observation window installed on the box door, a fixed base installed on the top of the main box body, a push rod installed on the lower end of the fixed base, an upper mold installed on the lower end of the push rod, a heating element installed on the top of the upper mold, a heating block installed on the bottom of the upper mold, a lower mold arranged inside the main box body, a groove for placing plastic parts is opened at the center of the lower mold, and a cooling mechanism is installed at the bottom of the lower mold.

[0004] In the above scheme, the cold air cooled by the cooling mechanism is blown toward the plastic part by the second fan, so that the plastic part is cooled quickly, which is beneficial to improving the working efficiency of the hot pressing molding device. However, in actual use, the workpiece will stick to the mold cavity of the lower mold after the hot pressing is completed. After the workpiece is cooled, the workpiece cannot be easily removed from the mold cavity, which can easily cause damage to the workpiece. In addition, the cooling effect is poor because the lower mold is only dissipated by air cooling. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a heat pressing device for plastic parts.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0007] A heat pressing device for plastic parts, comprising: a processing shell, the inner wall of the processing shell is fixedly connected to a workbench, a lower mold is installed on the upper side of the workbench, an upper mold matched with the lower mold is installed inside the processing shell, a mounting groove is opened on the lower side of the inner wall of the lower mold, a top plate is slidably matched with the inner wall of the mounting groove, a sealing plate is slidably and elastically matched with the inner wall of the mounting groove, a bent pipe is fixedly connected to the lower side of the inner wall of the mounting groove, and the bent pipe is connected to an air intake assembly;

[0008] The air intake assembly includes an air intake groove opened on one side of the processing shell, a fan is installed on the inner wall of the air intake groove, an air intake shell fixedly connected to the bent pipe is fixedly connected to one side of the inner wall of the processing shell, an air outlet pipe is fixedly connected to one side of the air intake shell, and a cooling mechanism is arranged on the lower side of the inner wall of the processing shell.

[0009] Optionally, corresponding control valves are provided on the air outlet pipe and the elbow, and the airflow direction can be better controlled by the control valves to improve stability.

[0010] Optionally, two ventilation grooves are provided on the lower side of the sealing plate, a baffle is rotatably and elastically matched on one side of the inner wall of the ventilation groove, and L-shaped rods matching with the baffles are fixedly connected on both sides of the inner wall of the mounting groove. By providing the L-shaped rods and baffles, when the top plate demoulds the workpiece, the baffles are opened under the action of the L-shaped rods, allowing excess air to enter the mold cavity, further cooling the workpiece, and facilitating the removal of the workpiece.

[0011] Optionally, the cooling mechanism includes a water tank fixedly connected to the lower side of the inner wall of the processing shell, a water pump installed on the upper side of the water tank, a cooling pipe fixedly connected to the output end of the water pump, a cooling cavity opened inside the lower mold, a return pipe fixedly connected to the lower side of the inner wall of the cooling cavity, and the upper end of the cooling pipe cooperates with the cooling cavity. By setting up the cooling mechanism, the lower mold is cooled, the pressing effect is increased, and the rapid molding of the workpiece in the mold cavity is facilitated.

[0012] Optionally, a reciprocating heat dissipation portion is provided on the cooling pipe, the reciprocating heat dissipation portion is directly opposite to the air outlet direction of the air outlet pipe, and the reciprocating heat dissipation portion is composed of multiple sections of reciprocating pipes, which can increase the heat dissipation area.

[0013] Optionally, a hydraulic rod is installed on the upper side of the inner wall of the processing shell, the output end of the hydraulic rod is fixedly connected to the upper mold, and an installation cavity is opened on the inner wall of the upper mold, and a heating plate is installed inside the installation cavity. The heating plate is used to heat the workpiece in the mold cavity of the lower mold to increase the pressing effect of the workpiece.

[0014] Optionally, two guide rods are fixedly connected to the lower side of the upper mold, and two guide grooves matching the guide rods are provided on the upper side of the lower mold. The guide rods and guide grooves are provided to guide the upper mold and the lower mold, thereby increasing the precision of mold closing.

[0015] Optionally, one end of the guide rod inserted into the guide groove is an arc-shaped end portion, which can facilitate the insertion of the guide rod into the guide groove and improve the fault tolerance of the insertion process. The bottom of the guide groove is an arc-shaped surface matching the arc-shaped end portion to improve stability after insertion.

[0016] Optionally, a gas outlet groove is provided on one side of the processing shell, a heat dissipation net is installed on the inner wall of the gas outlet groove, and an inspection door is installed on one side of the processing shell. The gas outlet groove and the heat dissipation net are provided to facilitate the discharge of gas inside the processing shell.

[0017] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art. Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described below at the same time:

[0018] By setting up a sealing plate, when demolding the molded workpiece, the control valve on the air outlet pipe can be closed to allow air to enter the installation groove. As the air pressure increases, the sealing plate moves upward to drive the top plate to eject the workpiece. As the sealing plate moves, the baffle is pushed open by the L-shaped rod, allowing excess gas to flow into the mold cavity through the air-permeable groove, cooling the workpiece again and making it easier for the staff to take it. By setting up a cooling mechanism, it is used to cool the workpiece and improve the hot pressing and molding effect of plastic parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the utility model;

[0020] Figure 2 It is a front cross-sectional structural schematic diagram of an embodiment of the utility model;

[0021] Figure 3 for Figure 2 Schematic diagram of the structure at A in the middle;

[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of a sealing plate according to an embodiment of the utility model;

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. Processing shell; 2. Workbench; 3. Lower mold; 4. Mounting groove; 5. Top plate; 6. Sealing plate; 7. Elbow; 8. Air inlet groove; 9. Fan; 10. Air inlet shell; 11. Air outlet duct; 12. Cooling mechanism; 121. Water tank; 122. Water pump; 123. Cooling pipe; 124. Cooling cavity; 125. Reflux pipe; 13. Breathing groove; 14. Baffle; 15. L-shaped rod; 16. Hydraulic rod; 17. Mounting cavity; 18. Heating plate; 19. Guide rod; 20. Guide groove; 21. Air outlet groove; 22. Heat dissipation net; 23. Inspection door; 24. Upper mold. DETAILED DESCRIPTION

[0025] The utility model will now be further described in detail with reference to the accompanying drawings.

[0026] See also Figure 1-4As shown, in this embodiment, a heat pressing device for plastic parts is provided, comprising: a processing shell 1, the inner wall of the processing shell 1 is fixedly connected to a workbench 2, a lower mold 3 is installed on the upper side of the workbench 2, an upper mold 24 matched with the lower mold 3 is installed inside the processing shell 1, a mounting groove 4 is opened on the lower side of the inner wall of the lower mold 3, a top plate 5 is slidably matched with the inner wall of the mounting groove 4, a sealing plate 6 is slidably and elastically matched with the inner wall of the mounting groove 4, a bent pipe 7 is fixedly connected to the lower side of the inner wall of the mounting groove 4, and the bent pipe 7 is connected to the air intake assembly;

[0027] The air intake assembly includes an air intake groove 8 opened on one side of the processing shell 1, and a fan 9 is installed on the inner wall of the air intake groove 8. One side of the inner wall of the processing shell 1 is fixedly connected to an air intake shell 10 fixedly connected to the elbow 7, and one side of the air intake shell 10 is fixedly connected to an air outlet pipe 11. A cooling mechanism 12 is arranged on the lower side of the inner wall of the processing shell 1, and corresponding control valves are arranged on the air outlet pipe 11 and the elbow 7.

[0028] One aspect of the application of this embodiment is as follows: when in use, the workpiece is placed in the mold cavity of the lower mold 3, and the upper mold 24 is molded with the lower mold 3 under the drive of the hydraulic rod 16. Under the action of the heating plate 18, the pressing effect of the plastic part is increased. During processing, under the action of the water pump 122, the coolant in the cooling cavity 124 is circulated and transported, so that the hot coolant in the cooling cavity 124 is transported back to the cooling pipe 123. Under the action of the fan 9 and the air outlet pipe 11, the cooling pipe 123 is heat exchanged and cooled, so that the cooled coolant re-enters the cooling cavity 124, thereby increasing the cooling effect on the workpiece in the mold cavity;

[0029] When the processing is completed and demoulding is required, the control valve on the air outlet pipe 11 is closed, and the control valve of the elbow 7 is opened to allow air to enter the installation groove 4 through the elbow 7. As the air pressure increases, the sealing plate 6 moves upward, and the movement of the sealing plate 6 drives the top plate 5 to eject the formed workpiece. As the sealing plate 6 moves, the baffle 14 is pushed open by the L-shaped rod 15, allowing excess gas to flow into the mold cavity through the air permeable groove 13, cooling the workpiece again, making it easier for the staff to take it.

[0030] By setting the sealing plate 6, when demolding the molded workpiece, the control valve on the air outlet pipe 11 can be closed to allow air to enter the installation groove 4. As the air pressure increases, the sealing plate 6 moves upward to drive the top plate 5 to eject the workpiece. As the sealing plate 6 moves, the baffle 14 is pushed open by the L-shaped rod 15, allowing excess gas to flow into the mold cavity through the air permeable groove 13, cooling the workpiece again to facilitate the staff to take it. By setting the cooling mechanism 12, it is used to cool the workpiece and improve the hot pressing and molding effect of the plastic parts.

[0031] Two ventilation grooves 13 are provided on the lower side of the sealing plate 6 of the present embodiment, and a baffle 14 is rotatably and elastically matched on one side of the inner wall of the ventilation groove 13, and L-shaped rods 15 matching with the baffle 14 are fixedly connected on both sides of the inner wall of the mounting groove 4; by arranging the L-shaped rods 15 and the baffles 14, when the top plate 5 demoulds the workpiece, the baffles 14 are opened under the action of the L-shaped rods 15, so that excess air enters the mold cavity, further cools the workpiece, and facilitates the removal of the workpiece.

[0032] The cooling mechanism 12 of this embodiment includes a water tank 121 fixedly connected to the lower side of the inner wall of the processing shell 1, a water pump 122 installed on the upper side of the water tank 121, a cooling pipe 123 fixedly connected to the output end of the water pump 122, a cooling cavity 124 opened in the lower mold 3, and a return pipe 125 fixedly connected to the lower side of the inner wall of the cooling cavity 124. The upper end of the cooling pipe 123 cooperates with the cooling cavity 124, and a reciprocating heat dissipation part is provided on the cooling pipe 123, and the reciprocating heat dissipation part is directly opposite to the air outlet direction of the air outlet pipe 11. By setting up the cooling mechanism 12, it is used to cool the lower mold 3, increase the pressing effect, and facilitate the rapid molding of the processed parts in the mold cavity.

[0033] In this embodiment, a hydraulic rod 16 is installed on the upper side of the inner wall of the processing shell 1, and the output end of the hydraulic rod 16 is fixedly connected to the upper mold 24. The inner wall of the upper mold 24 is provided with a mounting cavity 17, and a heating plate 18 is installed inside the mounting cavity 17. The heating plate 18 is provided to heat the workpiece in the mold cavity of the lower mold 3, thereby increasing the pressing effect of the workpiece.

[0034] In this embodiment, the lower side of the upper mold 24 is fixedly connected with two guide rods 19, and the upper side of the lower mold 3 is provided with two guide grooves 20 which match the guide rods 19. One end of the guide rod 19 inserted into the guide groove 20 is an arc-shaped end, and the bottom of the guide groove 20 is an arc-shaped surface which matches the arc-shaped end. By setting the guide rods 19 and the guide grooves 20, the upper mold 24 and the lower mold 3 are guided to increase the accuracy of mold closing.

[0035] In this embodiment, a gas outlet groove 21 is provided on one side of the processing shell 1, and a heat dissipation net 22 is installed on the inner wall of the gas outlet groove 21. An inspection door 23 is installed on one side of the processing shell 1. The gas outlet groove 21 and the heat dissipation net 22 are provided to facilitate the discharge of gas inside the processing shell 1.

[0036] The present invention is not limited to the above-mentioned implementation modes. Anyone should be aware of the structural changes made under the inspiration of the present invention. Any technical solution that is the same or similar to the present invention falls within the protection scope of the present invention. The technology, shape, and structure that are not described in detail in the present invention are all known technologies.

Claims

1. A heat pressing device for plastic parts, characterized in that: include: A processing shell (1) is provided, wherein the inner wall of the processing shell (1) is fixedly connected to a workbench (2), a lower mold (3) is installed on the upper side of the workbench (2), an upper mold (24) matched with the lower mold (3) is installed inside the processing shell (1), a mounting groove (4) is provided on the lower side of the inner wall of the lower mold (3), a top plate (5) is slidably matched on the inner wall of the mounting groove (4), a sealing plate (6) is slidably and elastically matched on the inner wall of the mounting groove (4), a bent pipe (7) is fixedly connected to the lower side of the inner wall of the mounting groove (4), and the bent pipe (7) is connected to an air intake assembly.

2. A heat pressing device for plastic parts according to claim 1, characterized in that: The air intake assembly comprises an air intake groove (8) provided on one side of a processing shell (1); a fan (9) is installed on the inner wall of the air intake groove (8); an air intake shell (10) fixedly connected to the bent pipe (7) is fixedly connected to one side of the inner wall of the processing shell (1); an air outlet pipe (11) is fixedly connected to one side of the air intake shell (10); and a cooling mechanism (12) is arranged on the lower side of the inner wall of the processing shell (1).

3. A heat pressing device for plastic parts according to claim 2, characterized in that: Corresponding control valves are provided on the air outlet pipe (11) and the bent pipe (7).

4. A heat pressing device for plastic parts according to claim 3, characterized in that: Two ventilation grooves (13) are provided on the lower side of the sealing plate (6), one side of the inner wall of the ventilation groove (13) is rotatably and elastically matched with a baffle (14), and both sides of the inner wall of the installation groove (4) are fixedly connected with L-shaped rods (15) matched with the baffle (14).

5. A heat pressing device for plastic parts according to claim 4, characterized in that: The cooling mechanism (12) comprises a water tank (121) fixedly connected to the lower side of the inner wall of the processing shell (1), a water pump (122) installed on the upper side of the water tank (121), a cooling pipe (123) fixedly connected to the output end of the water pump (122), a cooling cavity (124) opened inside the lower mold (3), a return pipe (125) fixedly connected to the lower side of the inner wall of the cooling cavity (124), and the upper end of the cooling pipe (123) cooperates with the cooling cavity (124).

6. A heat pressing device for plastic parts according to claim 5, characterized in that: A reciprocating heat dissipation portion is provided on the cooling pipe (123), and the reciprocating heat dissipation portion is directly opposite to the air outlet direction of the air outlet pipe (11).

7. A heat pressing device for plastic parts according to claim 6, characterized in that: A hydraulic rod (16) is installed on the upper side of the inner wall of the processing shell (1), and the output end of the hydraulic rod (16) is fixedly connected to the upper mold (24). The inner wall of the upper mold (24) is provided with an installation cavity (17), and a heating plate (18) is installed inside the installation cavity (17).

8. A heat pressing device for plastic parts according to claim 7, characterized in that: Two guide rods (19) are fixedly connected to the lower side of the upper mold (24), and two guide grooves (20) matching with the guide rods (19) are arranged on the upper side of the lower mold (3).

9. A heat pressing device for plastic parts according to claim 8, characterized in that: One end of the guide rod (19) inserted into the guide groove (20) is an arc-shaped end portion, and the bottom of the guide groove (20) is an arc-shaped surface matching the arc-shaped end portion.

10. A heat pressing device for plastic parts according to claim 9, characterized in that: An air outlet groove (21) is provided on one side of the processing shell (1), a heat dissipation net (22) is installed on the inner wall of the air outlet groove (21), and an inspection door (23) is installed on one side of the processing shell (1).

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