Cooling device for secondary foaming molding of EVA (Ethylene Vinyl Acetate)

Abstract

The utility model relates to the technical field of sole processing equipment, in particular to a cooling device for EVA (ethylene-vinyl acetate) secondary foaming forming, which comprises a forming support frame, a lower stamping die fixedly mounted on the surface of the bottom end of the forming support frame through a support rod, and a cooling box fixedly mounted on the surface of the bottom end of the forming support frame through a telescopic cylinder. A cooling cavity is formed in the lower stamping die, arc-shaped baffles are slidably mounted on the inner walls of the two ends of the cooling cavity and located at one ends of the heat dissipation holes, vent holes are formed in the two ends of the top of the cooling cavity, heat dissipation fans are fixedly mounted at one ends of the vent holes, and linkage ventilation assemblies are fixedly mounted at the other ends of the vent holes. According to the device, the lower stamping die can be cooled through cooling liquid in the cooling box, meanwhile, through cooperation of the cooling box, an arc-shaped baffle and an L-shaped plate in the linkage ventilation assembly, ventilation holes and heat dissipation holes can communicate with the outside, and then the cooling effect on products in the lower stamping die can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sole processing equipment, in particular to a cooling device for EVA secondary foaming molding. Background Art

[0002] During the secondary foaming molding process of EVA (ethylene-vinyl acetate copolymer), the cooling device plays a vital role and can accelerate the rapid molding of EVA products.

[0003] There is an automatic hot-pressing and cooling device for secondary foaming molding of EVA soles (Announcement No.: CN211941762U), which includes a base, four support columns evenly distributed on the upper end of the base, the top ends of the support columns are connected to a top plate, the left side of the lower end of the top plate is connected to a rectangular base, the right side of the rectangular base is provided with a rectangular groove, the rectangular groove is fixedly connected to a guide rod, the rectangular groove is rotatably connected to a screw rod parallel to the guide rod through a bearing, a first servo motor is provided on the upper side of the top plate, and the output shaft of the first servo motor is connected to the screw rod. This automatic hot-pressing and cooling device for secondary foaming molding of EVA soles can increase the heat dissipation efficiency and heating efficiency of the equipment, use water to cool the mold, and is provided with a water bucket to facilitate water recycling. A second rotating blade is provided inside to remove water adhered to the mold for a secondary time, which is also convenient for staff to remove the mold. The four mold slots operate simultaneously, which can increase work efficiency.

[0004] The above existing devices use water to cool the mold. Although it can increase the heat dissipation efficiency of the equipment, the efficiency of discharging hot air inside the mold is poor. The above existing devices are not convenient for quickly cooling the mold as a whole, thereby accelerating the molding and demolding efficiency of the product. Therefore, the above existing devices need to be improved.

[0005] In view of this, the present utility model is proposed. Utility Model Content

[0006] In order to overcome the technical defects of the prior art, the utility model provides a cooling device for EVA secondary foam molding, which can improve the cooling efficiency of the device.

[0007] The technical solution adopted by the utility model is: a cooling device for EVA secondary foam molding, comprising a molding support frame, a stamping upper mold is fixedly installed on the top of the molding support frame by a pushing cylinder, a stamping lower mold is fixedly installed on the bottom surface of the molding support frame by a support rod, a cooling box is fixedly installed on the bottom surface of the molding support frame by a telescopic cylinder, an automatic reset door is symmetrically hingedly provided on the lower surface of the stamping lower mold, a cooling cavity is provided in the stamping lower mold, heat dissipation holes are symmetrically provided on the inner walls at both ends of the cooling cavity, arc-shaped baffles are slidably installed on the inner walls at both ends of the cooling cavity, the arc-shaped baffles are located at one end of the heat dissipation holes, ventilation holes are provided at both ends of the top of the cooling cavity, a cooling fan is fixedly installed on one end of the ventilation hole, and a linkage ventilation component is fixedly installed on the other end of the ventilation hole.

[0008] Preferably, in order to drive the stamping upper die to move by the pushing cylinder, the pushing cylinder is symmetrically fixedly installed on the inner top surface of the forming support frame.

[0009] Preferably, in order to provide stably support for the cooling box, the support rod is fixedly mounted on the bottom surface of the forming support frame, the support rod is located at the four corners of the stamping lower mold, and the telescopic cylinder is symmetrically fixedly mounted on the bottom surface of the forming support frame.

[0010] Preferably, in order to enable the automatic reset door to close automatically after the cooling box enters the cooling chamber and then leaves, a winding groove is provided at both ends of one side of the automatic reset door, and a torsion spring is fixedly installed in the winding groove, and one end of the torsion spring is fixedly connected to the inner wall of the cooling chamber.

[0011] Preferably, in order to move the arc baffle and enable the arc baffle to return to its original position automatically, an arc-shaped T-shaped block is fixedly installed on one side surface of the arc baffle, and arc-shaped T-shaped grooves are symmetrically provided on the inner walls at both ends of the cooling chamber, and the arc-shaped T-shaped block and the arc-shaped T-shaped groove are slidably engaged with each other. A bending spring is fixedly installed on one end of the arc-shaped T-shaped groove, and one end of the bending spring is fixedly connected to one end of the arc-shaped T-shaped block.

[0012] Preferably, in order to enable the sealing cover to release the blockage of the vent hole by pressing one end of the L-shaped plate, the linked ventilation assembly includes a sealing cover, the sealing cover is located at one end of the vent hole, an L-shaped plate is fixedly installed on one side surface of the sealing cover, and concave frames are fixedly installed at both ends of the top of the cooling cavity, and the L-shaped plate is rotatably installed between the concave frames.

[0013] Preferably, in order to enable the sealing cover to automatically seal the vent hole through the elastic rope, an elastic rope is fixedly installed in the vent hole, and one end of the elastic rope is fixedly connected to the sealing cover.

[0014] The beneficial effect of the present utility model is that the device can cool the stamping lower mold through the coolant in the cooling box after the stamping lower mold product is formed. At the same time, through the cooperation of the cooling box, the arc-shaped baffle and the L-shaped plate in the linkage ventilation component, the ventilation holes and the heat dissipation holes can be connected to the outside world, thereby improving the cooling effect of the product in the stamping lower mold and facilitating the demoulding of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 This is a schematic diagram of the position of the support rod of the utility model.

[0017] Figure 3 This is a schematic diagram of the internal structure of the cooling chamber of the present invention.

[0018] Figure 4 This is a schematic diagram of the position of the torsion spring of the utility model.

[0019] Figure 5 This is a schematic diagram of the position of the arc-shaped T-shaped block of the utility model.

[0020] Figure 6 for Figure 3 A magnified view of the structure at point A.

[0021] Explanation of the accompanying drawings: In the figure: 1. Forming support frame; 2. Push cylinder; 3. Stamping upper mold; 4. Support rod; 5. Stamping lower mold; 6. Telescopic cylinder; 7. Cooling box; 8. Automatic reset door; 9. Cooling chamber; 10. Heat dissipation hole; 11. Arc-shaped baffle; 12. Vent; 13. Cooling fan; 14. Linked ventilation assembly; 1401. Sealing cover; 1402. L-shaped plate; 1403. Concave frame; 1404. Elastic rope; 15. Torsion spring; 16. Arc-shaped T-shaped block; 17. Arc-shaped T-shaped slot; 18. Bending spring. DETAILED DESCRIPTION

[0022] The following is combined with Figures 1-6The utility model is further explained as follows: A cooling device for EVA secondary foaming molding comprises a molding support frame 1, a stamping upper mold 3 is fixedly installed on the top of the molding support frame 1 by a pushing cylinder 2, a stamping lower mold 5 is fixedly installed on the bottom surface of the molding support frame 1 by a support rod 4, a cooling box 7 is fixedly installed on the bottom surface of the molding support frame 1 by a telescopic cylinder 6, an automatic reset door 8 is symmetrically hingedly provided on the lower surface of the stamping lower mold 5, a cooling cavity 9 is provided in the stamping lower mold 5, heat dissipation holes 10 are symmetrically provided on the inner walls at both ends of the cooling cavity 9, arc-shaped baffles 11 are slidably installed on the inner walls at both ends of the cooling cavity 9, the arc-shaped baffles 11 are located at one end of the heat dissipation holes 10, and air vents 12 are provided at both ends of the top of the cooling cavity 9, a heat dissipation fan 13 is fixedly installed on one end of the air vent 12, and a linkage ventilation component 14 is fixedly installed on the other end of the air vent 12.

[0023] like Figure 2 and Figure 3 As shown, the pushing cylinder 2 is symmetrically fixedly installed on the inner top surface of the forming support frame 1, the support rod 4 is fixedly installed on the bottom surface of the forming support frame 1, the support rod 4 is located at the four corners of the stamping lower mold 5, and the telescopic cylinder 6 is symmetrically fixedly installed on the bottom surface of the forming support frame 1. A winding groove is provided at both ends of one side of the automatic reset door 8, and a torsion spring 15 is fixedly installed in the winding groove. One end of the torsion spring 15 is fixedly connected to the inner wall of the cooling chamber 9, and an arc-shaped T-shaped block 16 is fixedly installed on one side surface of the arc-shaped baffle 11. Arc-shaped T-shaped grooves 17 are symmetrically provided on the inner walls of both ends of the cooling chamber 9. The arc-shaped T-shaped block 16 and the arc-shaped T-shaped groove 17 are slidably engaged with each other, and a bending spring 18 is fixedly installed on one end of the arc-shaped T-shaped groove 17. One end of the bending spring 18 is fixedly connected to one end of the arc-shaped T-shaped block 16, so that when the staff EVA particles are placed After being placed in the stamping lower die 5, the staff turns on the pushing cylinder 2, and drives the stamping upper die 3 to move by pushing the cylinder 2, so that the stamping lower die 5 can be stamped, and the stamping lower die 5 and the stamping upper die 3 are both provided with a heating mechanism. Because the heating mechanism is an existing structure, the present device does not make a structural description. After the staff has stamped the EVA particles, the staff turns on the telescopic cylinder 6, and drives the cooling box 7 to rise by the telescopic cylinder 6. At this time, the cooling box 7 contacts the automatic reset door 8, and then the automatic reset door 8 automatically opens. At this time, after the automatic reset door 8 contacts the arc baffle 11, the arc baffle 11 starts to move, and the bending spring 18 is in a compressed state. At this time, the heat dissipation holes 10 at both ends of the cooling chamber 9 are connected to the outside world. The connection between the coolant in the cooling box 7 and the heat dissipation holes 10 can increase the cooling effect of the stamping lower die 5.

[0024] like Figure 6As shown, the linked ventilation assembly 14 includes a blocking cover 1401, which is located at one end of the vent 12, an L-shaped plate 1402 is fixedly installed on one side surface of the blocking cover 1401, and concave frames 1403 are fixedly installed at both ends of the top of the cooling chamber 9. The L-shaped plate 1402 is rotatably installed between the concave frames 1403, and an elastic rope 1404 is fixedly installed in the vent 12. One end of the elastic rope 1404 is fixedly connected to the blocking cover 1401, so that when the coolant in the cooling box 7 contacts the stamping lower die 5, the top side wall of the cooling box 7 contacts the L-shaped plate 1402 in the linked ventilation assembly 14, and the L-shaped plate 1402 starts to be fixed on the concave frame 1403. The dynamic sealing cover 1401 rotates, and the staff turns on the cooling fan 13 in advance. When the sealing cover 1401 releases the blockage of the vent 12, the cooling fan 13 can slow down the flow of gas in the cooling chamber 9, thereby improving the cooling efficiency of the device. After the cooling of the stamping die 5 is completed, the staff contracts the telescopic cylinder 6, thereby allowing the cooling box 7 to withdraw from the cooling chamber 9. At this time, the automatic reset door 8 begins to automatically reset under the action of the torsion spring 15. At the same time, when the cooling box 7 withdraws from the cooling chamber 9, the sealing cover 1401 begins to re-block the vent 12 under the action of the elastic rope 1404 in a stretched state, thereby facilitating the staff to reheat the stamping die 5.

[0025] When the present invention is in use, after the worker places the EVA particles in the stamping lower die 5, the worker starts the pushing cylinder 2, and drives the stamping upper die 3 to move by pushing the cylinder 2, so that the stamping lower die 5 can be stamped, and the stamping lower die 5 and the stamping upper die 3 are both provided with a heating mechanism. Because the heating mechanism is an existing structure, the present device does not make a structural description. After the worker has stamped the EVA particles, the worker starts the telescopic cylinder 6, and drives the cooling box 7 to rise by the telescopic cylinder 6. At this time, the cooling box 7 contacts the automatic reset door 8, and then the automatic reset door 8 automatically opens. At this time, after the automatic reset door 8 contacts the arc baffle 11, the arc baffle 11 starts to move, and the bending spring 18 is in a compressed state. At this time, the heat dissipation holes 10 at both ends of the cooling chamber 9 are connected to the outside world, and the connection between the coolant in the cooling box 7 and the heat dissipation holes 10 can increase the cooling effect of the stamping lower die 5. When the cooling After the coolant in the box 7 contacts the stamping lower mold 5, the top side wall of the cooling box 7 contacts the L-shaped plate 1402 in the linkage ventilation assembly 14. At this time, the L-shaped plate 1402 begins to drive the sealing cover 1401 to rotate under the fixation of the concave frame 1403. At this time, the staff turns on the cooling fan 13 in advance. When the sealing cover 1401 releases the blockage of the vent 12, the cooling fan 13 can slow down the flow of gas in the cooling chamber 9, thereby improving the cooling efficiency of the device. When the cooling of the stamping lower mold 5 is completed, the staff contracts the telescopic cylinder 6, thereby causing the cooling box 7 to withdraw from the cooling chamber 9. At this time, the automatic reset door 8 begins to automatically reset under the action of the torsion spring 15. At the same time, when the cooling box 7 withdraws from the cooling chamber 9, the sealing cover 1401 begins to re-seal the vent 12 under the action of the elastic rope 1404 in a stretched state, thereby facilitating the staff to reheat the stamping lower mold 5.

[0026] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A cooling device for EVA secondary foaming molding, comprising a molding support frame (1), wherein a stamping upper mold (3) is fixedly mounted on the top of the molding support frame (1) via a push cylinder (2), and a stamping lower mold (5) is fixedly mounted on the bottom surface of the molding support frame (1) via a support rod (4), characterized in that: A cooling box (7) is fixedly installed on the bottom surface of the forming support frame (1) through a telescopic cylinder (6); an automatic reset door (8) is symmetrically hingedly provided on the lower surface of the stamping lower mold (5); a cooling cavity (9) is provided in the stamping lower mold (5); heat dissipation holes (10) are symmetrically provided on the inner walls at both ends of the cooling cavity (9); arc-shaped baffles (11) are slidably installed on the inner walls at both ends of the cooling cavity (9); the arc-shaped baffles (11) are located at one end of the heat dissipation holes (10); ventilation holes (12) are provided at both ends of the top of the cooling cavity (9); a cooling fan (13) is fixedly installed at one end of the ventilation hole (12); and a linkage ventilation component (14) is fixedly installed at the other end of the ventilation hole (12).

2. The cooling device for EVA secondary foam molding according to claim 1, characterized in that: The pushing cylinder (2) is symmetrically fixedly mounted on the inner top surface of the forming support frame (1).

3. The cooling device for EVA secondary foam molding according to claim 1, characterized in that: The support rod (4) is fixedly mounted on the bottom surface of the forming support frame (1), the support rod (4) is located at the four corners of the stamping lower die (5), and the telescopic cylinder (6) is symmetrically fixedly mounted on the bottom surface of the forming support frame (1).

4. The cooling device for EVA secondary foam molding according to claim 1, characterized in that: Both ends of one side of the automatic reset door (8) are provided with a winding groove, a torsion spring (15) is fixedly installed in the winding groove, and one end of the torsion spring (15) is fixedly connected to the inner wall of the cooling chamber (9).

5. The cooling device for EVA secondary foam molding according to claim 1, characterized in that: An arc-shaped T-shaped block (16) is fixedly mounted on one side surface of the arc-shaped baffle (11), and arc-shaped T-shaped grooves (17) are symmetrically provided on the inner walls at both ends of the cooling cavity (9), and the arc-shaped T-shaped block (16) and the arc-shaped T-shaped grooves (17) are slidably engaged with each other.

6. The cooling device for EVA secondary foam molding according to claim 5, characterized in that: A bending spring (18) is fixedly mounted on one end of the arc-shaped T-shaped slot (17), and one end of the bending spring (18) and one end of the arc-shaped T-shaped block (16) are fixedly connected to each other.

7. The cooling device for EVA secondary foam molding according to claim 1, characterized in that: The linked ventilation assembly (14) includes a blocking cover (1401), the blocking cover (1401) is located at one end of the vent hole (12), an L-shaped plate (1402) is fixedly mounted on one side surface of the blocking cover (1401), concave frames (1403) are fixedly mounted at both ends of the top of the cooling cavity (9), and the L-shaped plate (1402) is rotatably mounted between the concave frames (1403).

8. The cooling device for EVA secondary foam molding according to claim 7, characterized in that: An elastic rope (1404) is fixedly installed in the vent hole (12), and one end of the elastic rope (1404) and the blocking cover (1401) are fixedly connected to each other.

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