A rapid demolding device for a thermoforming mold

Abstract

The application relates to the technical field of molds, and discloses a rapid demolding device for a thermoforming mold, which solves the problem that products of the thermoforming mold are easily attached to the upper mold, the products cannot be smoothly demolded from the mold, manual operation is needed to demold the products from the mold, demolding is labor-consuming and time-consuming, production efficiency is affected, and there is a hidden danger, the device comprises a fixing seat, support rods are connected to the two sides of the upper end of the fixing seat, a top plate is connected to the upper end of the support rod, guide rods are connected to the two sides of the upper end of the top plate in a penetrating mode, an upper mold is connected to the lower end of the guide rod, a cavity is arranged in the middle of the upper end of the upper mold, a cover plate is connected to the upper end of the cavity, an upper air cylinder is connected to the middle of the upper end of the cover plate, the upper air cylinder is installed on the upper end of the top plate, and a rack plate is connected to the two sides of the upper end of the cover plate in a penetrating mode, the device has the advantages of rapid demolding, improved production efficiency, and safety compared with the manual demolding mode.

Description

Technical Field

[0001] This invention belongs to the field of mold technology, specifically a device for rapid demolding of thermoforming molds. Background Technology

[0002] When producing thermoforming products, the finished products tend to stick to the upper mold and cannot be easily removed from the mold. Manual operation is required to remove the products from the mold, which is laborious and time-consuming, seriously affecting production efficiency and posing safety hazards. Therefore, a rapid demolding device for thermoforming molds is designed. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, the present invention provides a rapid demolding device for thermoforming molds, which effectively solves the problems that products in thermoforming molds tend to stick to the upper mold, and the products cannot be smoothly removed from the mold. Manual operation is required to remove the products from the mold, which is laborious, time-consuming, affects production efficiency, and poses safety hazards.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a rapid demolding device for thermoforming molds, comprising a fixed base, support rods connected to both sides of the upper end of the fixed base, a top plate connected to the upper end of the support rods, guide rods penetrating both sides of the upper end of the top plate, an upper mold connected to the lower end of the guide rods, a cavity opened in the middle of the upper end of the upper mold, a cover plate connected to the upper end of the cavity, an upper cylinder connected to the middle of the upper end of the cover plate, the upper cylinder mounted on the upper end of the top plate, rack plates penetrating both sides of the upper end of the cover plate, the upper end of the rack plates connected to the top plate, a first gear meshing with the opposite side of the rack plates on both sides, a second gear meshing with the lower side of the first gear, a third gear meshing with the lower side of the second gear, the first gear, the second gear and the third gear being rotatably connected to the cavity, an ejector column penetrating inside the cavity, an ejector plate connected to the lower end of the ejector column, the ejector plate being movably embedded in the lower end of the upper mold, teeth connected to both sides of the ejector column, the teeth on both sides meshing with the third gears on both sides respectively;

[0005] A lower cylinder is connected to the center of the upper wall inside the fixed base. A movable plate is connected to the output end of the lower cylinder. The movable plate is sleeved on the outside of the support rod. A first spring is sleeved on the lower end of the movable plate and outside the support rod. A lower mold is connected to the upper end of the movable plate. Slots are opened on both sides of the lower end of the lower mold. The slots are connected to the movable plate. An ejector rod is connected through the slot. The lower end of the ejector rod extends into the interior of the fixed base. An ejector block is connected to the upper end of the ejector rod. The ejector block is embedded in the forming cavity of the lower mold. A stop block is connected to the outside of the ejector rod. A second spring is sleeved on the upper end of the stop block and outside the ejector rod. The upper end of the second spring is connected to the slot.

[0006] Preferably, rotating blocks are connected to the lower parts of both sides of the upper mold, and an L-shaped locking rod is rotatably connected to one end of the rotating block. Side rods are connected to both sides of the lower end of the top plate, and guide slopes are provided at the lower part of the side rods and the upper part of the L-shaped locking rods.

[0007] Preferably, a third spring is connected between the upper side of the L-shaped clamping rod and the upper mold, and spring grooves are provided at the connection points of the L-shaped clamping rod and the upper mold corresponding to the third spring.

[0008] Preferably, the lower mold has slots on both sides of its lower part, and the L-shaped locking rod engages with the slots.

[0009] Preferably, a limit block is connected to the upper end of the guide rod, and a T-shaped groove is provided on the upper end of the top plate corresponding to the through-hole of the guide rod.

[0010] Preferably, the cover plate is connected to the upper mold by bolts, and an opening is provided at the upper end of the cover plate corresponding to the through-hole of the rack plate.

[0011] Preferably, the upper end of the ejector column is provided with a square groove, the lower end of the cover plate is connected to a square rod, the square rod is located inside the square groove, and the upper end of the ejector column is connected to a limit plate.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] (1) In this invention, if the molding die is attached to the upper die, the upper cylinder extends and moves downward. The first gear inside the cavity meshes with the rack plate for transmission. Under the meshing transmission of the first gear, the second gear, and the third gear, the third gear on both sides meshes with the teeth on both sides, and then the ejector column moves downward, causing the ejector plate to move downward and eject the die from the mold.

[0014] (2) If the molding die adheres to the lower die, the lower cylinder contracts, causing the movable plate to drive the lower die to continue moving downward until the stop block outside the ejector rod contacts the upper end of the fixed seat, and then continues to descend. The ejector rod stops descending under the action of the stop block. At this time, the lower die presses down on the second spring, and the ejector block gradually extends out of the molding cavity of the lower die, thereby ejecting the die and demolding it.

[0015] (3) The overall structure of the invention allows for rapid demolding, which effectively improves production efficiency. Compared with the dangerous manual demolding method, the demolding method of this device is safer. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0017] In the attached diagram:

[0018] Figure 1This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a cross-sectional view of the present invention;

[0020] Figure 3 This is a schematic diagram of the internal structure of the cavity in this invention;

[0021] Figure 4 This is a schematic diagram of the connection structure of the second spring of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of the present invention in the demolded state;

[0023] In the diagram: 1. Fixed base; 2. Support rod; 3. Top plate; 4. Guide rod; 5. Upper mold; 6. Cavity; 7. Cover plate; 8. Upper cylinder; 9. Rack plate; 10. First gear; 11. Second gear; 12. Third gear; 13. Ejector column; 14. Ejector plate; 15. Tooth; 16. Lower cylinder; 17. Movable plate; 18. First spring; 19. Lower mold; 20. Slot; 21. Ejector rod; 22. Ejector block; 23. Stop block; 24. Second spring; 25. Rotating block; 26. L-shaped locking rod; 27. Side rod; 28. Guide slope; 29. ​​Third spring; 30. Spring groove; 31. Locking groove; 32. Limiting block; 33. T-slot; 34. Bolt; 35. Square groove; 36. Square rod; 37. Limiting plate. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0025] Example 1, by Figures 1-5The present invention includes a fixed base 1, with support rods 2 connected to both sides of the upper end of the fixed base 1. A top plate 3 is connected to the upper end of the support rods 2. Guide rods 4 are connected through both sides of the upper end of the top plate 3. Limiting blocks 32 are connected to the upper ends of the guide rods 4, which can limit the descent. A T-slot 33 is provided on the upper end of the top plate 3 corresponding to the through-hole of the guide rods 4. An upper mold 5 is connected to the lower end of the guide rods 4. A cavity 6 is provided in the middle of the upper end of the upper mold 5. A cover plate 7 is connected to the upper end of the cavity 6. An upper cylinder 8 is connected to the middle of the upper end of the cover plate 7. The upper cylinder 8 is installed on the upper end of the top plate 3. A rack plate 9 is connected through both sides of the upper end of the cover plate 7. The upper end of the rack plate 9 is connected to the top plate 3. The cover plate 7 is connected to the upper mold 5 by bolts 34. An opening is provided on the upper end of the cover plate 7 corresponding to the through-hole of the rack plate 9. The rack plate 9 is connected to the first gear 10 on one side of each other. The first gear 10 is connected to the second gear 11 on the lower side of the first gear 10. The second gear 11 is connected to the third gear 12 on the lower side of the second gear 11. The first gear 10, the second gear 11 and the third gear 12 are rotatably connected to the cavity 6. The cavity 6 is connected to the ejector post 13. The lower end of the ejector post 13 is connected to the ejector plate 14. The ejector plate 14 is movably embedded in the lower end of the upper mold 5. The two ends of the ejector post 13 are connected to the teeth 15. The teeth 15 on both sides are connected to the third gear 12 on both sides respectively. The upper end of the ejector post 13 is provided with a square groove 35. The lower middle part of the cover plate 7 is connected to a square rod 36. The square rod 36 is located inside the square groove 35. The upper end of the ejector post 13 is connected to a limit plate 37.

[0026] A lower cylinder 16 is connected to the center of the upper wall inside the fixed base 1. A movable plate 17 is connected to the output end of the lower cylinder 16. The movable plate 17 is sleeved on the outside of the support rod 2. A first spring 18 is sleeved on the lower end of the movable plate 17 and outside the support rod 2. A lower mold 19 is connected to the upper end of the movable plate 17. A recess 20 is opened on both sides of the lower end of the lower mold 19. The recess 20 is connected to the movable plate 17. An ejector rod 21 is connected through the recess 20. The lower end of the ejector rod 21 extends into the interior of the fixed base 1. An ejector block 22 is connected to the upper end of the ejector rod 21. The ejector block 22 is embedded in the molding cavity of the lower mold 19. A stop block 23 is connected to the outside of the ejector rod 21. A second spring 24 is sleeved on the upper end of the stop block 23 and outside the ejector rod 21. The upper end of the second spring 24 is connected to the recess 20.

[0027] In Example 2, based on Example 1, rotating blocks 25 are connected to the lower parts of both sides of the upper mold 5. One end of the rotating block 25 is rotatably connected to an L-shaped locking rod 26. Side rods 27 are connected to both sides of the lower end of the top plate 3. Guide slopes 28 are provided at the lower part of the side rods 27 and the upper part of the L-shaped locking rod 26. A third spring 29 is connected between the upper side of the L-shaped locking rod 26 and the upper mold 5. Spring grooves 30 are provided at the connection points of the L-shaped locking rod 26 and the upper mold 5 corresponding to the third spring 29. Slots 31 are provided on both sides of the lower part of the lower mold 19. The L-shaped locking rod 26 is engaged with the slots 31.

[0028] Working principle: When the mold needs to be demolded, the upper cylinder 8 extends and pushes the upper mold 5 downwards. At the same time, the lower cylinder 16 retracts. As the upper mold 5 moves downwards, the L-shaped locking rod 26 engages with the slot 31 of the lower mold 19, causing the lower mold 19 to move downwards synchronously. At this time, the movable plate 17 moves downwards along the outside of the support rod 2. As the upper mold 5 moves downwards, the upper part of the L-shaped locking rod 26 contacts the lower part of the side rod 27. Under the action of the guide slope 28, the upper part of the L-shaped locking rod 26 is squeezed. The L-shaped locking rod 26 rotates around the rotating block 25, causing the L-shaped locking rod 26 to separate from the slot 31 of the lower mold 19.

[0029] If the molded part adheres to the lower end of the upper mold 5, as the upper cylinder 8 continues to extend and move downward, the first gear 10 inside the cavity 6 meshes with the rack plate 9 for transmission. Under the meshing transmission of the first gear 10, the second gear 11, and the third gear 12, the third gear 12 on both sides meshes with the teeth 15 on both sides, and then the ejector column 13 moves downward, causing the ejector plate 14 to move downward to eject the mold and demold it.

[0030] If the molded part adheres to the inside of the lower mold 19, as the lower cylinder 16 continues to contract, the movable plate 17 causes the lower mold 19 to continue to move downward until the stop block 23 outside the ejector rod 21 contacts the upper end of the fixed seat 1, and then continues to descend. The ejector rod 21 stops descending under the action of the stop block 23. At this time, the lower mold 19 presses down on the second spring 24, and the ejector block 22 gradually extends out of the molding cavity of the lower mold 19, thereby ejecting the mold and demolding it.

Claims

1. A quick demolding device for thermoforming molds, comprising a fixed base (1), characterized in that: The fixed base (1) is connected to support rods (2) on both sides of its upper end. The support rods (2) are connected to a top plate (3) on their upper ends. The top plate (3) is connected to guide rods (4) on both sides of its upper end. The guide rods (4) are connected to an upper mold (5) on their lower ends. The upper mold (5) has a cavity (6) in the middle of its upper end. The cavity (6) is connected to a cover plate (7) on its upper end. The cover plate (7) is connected to an upper cylinder (8) in the middle of its upper end. The upper cylinder (8) is installed on the upper end of the top plate (3). The cover plate (7) is connected to rack plates (9) on both sides of its upper end. The rack plates (9) are connected to the top plate (3) on their upper ends. The rack plates (9) on both sides are engaged with each other on opposite sides. The first gear (10) is meshed with the second gear (11) on one side of its lower part. The second gear (11) is meshed with the third gear (12) on one side of its lower part. The first gear (10), the second gear (11) and the third gear (12) are all rotatably connected to the cavity (6). The cavity (6) is connected through the ejector pin (13). The lower end of the ejector pin (13) is connected to the ejector plate (14). The ejector plate (14) is movably embedded in the lower end of the upper mold (5). The two ends of the ejector pin (13) are connected with teeth (15). The teeth (15) on both sides are meshed with the third gear (12) on both sides respectively. A lower cylinder (16) is connected to the center of the upper inner wall of the fixed base (1). A movable plate (17) is connected to the output end of the lower cylinder (16). The movable plate (17) is sleeved on the outside of the support rod (2). A first spring (18) is sleeved on the lower end of the movable plate (17) and located outside the support rod (2). A lower mold (19) is connected to the upper end of the movable plate (17). Slots (20) are opened on both sides of the lower end of the lower mold (19). The slots (20) are connected to the movable plate (17). (20) An ejector rod (21) is connected through the interior. The lower end of the ejector rod (21) extends into the interior of the fixed seat (1). An ejector block (22) is connected to the upper end of the ejector rod (21). The ejector block (22) is embedded in the molding cavity of the lower mold (19). A stop block (23) is connected to the outside of the ejector rod (21). A second spring (24) is sleeved on the upper end of the stop block (23) and outside the ejector rod (21). The upper end of the second spring (24) is connected to the sink (20).

2. The rapid demolding device for thermoforming molds according to claim 1, characterized in that: The upper mold (5) is connected to a rotating block (25) at the lower part of both sides. One end of the rotating block (25) is rotatably connected to an L-shaped locking rod (26). The lower end of the top plate (3) is connected to a side rod (27) on both sides. The lower part of the side rod (27) and the upper part of the L-shaped locking rod (26) are provided with guide slopes (28).

3. The rapid demolding device for thermoforming molds according to claim 2, characterized in that: A third spring (29) is connected between the upper side of the L-shaped clamp (26) and the upper mold (5). Spring grooves (30) are provided at the connection points of the L-shaped clamp (26) and the upper mold (5) corresponding to the third spring (29).

4. The rapid demolding device for thermoforming molds according to claim 1, characterized in that: The lower mold (19) has slots (31) on both sides of its lower part, and the L-shaped locking rod (26) is engaged with the slots (31).

5. A rapid demolding device for thermoforming molds according to claim 1, characterized in that: The upper end of the guide rod (4) is connected to a limiting block (32), and a T-slot (33) is provided on the upper end of the top plate (3) corresponding to the through-hole of the guide rod (4).

6. A rapid demolding device for thermoforming molds according to claim 1, characterized in that: The cover plate (7) is connected to the upper mold (5) by bolts (34), and an opening is provided at the upper end of the cover plate (7) corresponding to the through-hole of the rack plate (9).

7. A rapid demolding device for thermoforming molds according to claim 1, characterized in that: The top of the ejector column (13) is provided with a square groove (35), and a square rod (36) is connected to the middle of the lower end of the cover plate (7). The square rod (36) is located inside the square groove (35), and a limit plate (37) is connected to the top of the ejector column (13).

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