Mold forming structure of PET (Polyethylene Terephthalate) product

Abstract

The utility model relates to the technical field of molds, in particular to a PET product mold forming structure which comprises a workbench, two supporting frames are arranged at the upper end of the workbench, an upper mold and a lower mold are connected to the two supporting frames in a sliding mode, and a demolding mechanism and a discharging mechanism are arranged on the lower mold. The upper mold and the lower mold move through a driving mechanism; according to the demolding device, when the lower mold moves downwards, the first rolling wheel abuts against the second wedge-shaped block, the connecting block is pushed to move, the first wedge-shaped block is driven to move, meanwhile, the second rolling wheel abuts against the first wedge-shaped block, the first wedge-shaped block moves, the connecting plate is driven to move upwards, and then the top plate is driven to demold a plate; secondly, when the lower die descends, the second gear is connected with the second rack in a meshed mode, the rotating shaft is driven to rotate, then the first gear is driven to rotate, the first rack is driven to move, the first rack moves to push the push plate to move, and therefore the plate is pushed to be discharged.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a mold forming structure for a PET product. Background Art

[0002] PET, the full name of which is polyethylene terephthalate, is a thermoplastic polyester material. PET material has many advantages, such as high strength, high rigidity, good wear resistance, high transparency, good chemical stability, air tightness and easy processing. These characteristics make PET widely used in packaging, fiber, film, engineering plastics and other fields.

[0003] When processing PET sheets, molds are usually used for injection molding. For example, Chinese patent publication number "CN219543885U" discloses a PET decorative panel mold, which relates to the field of mold technology and includes an upper mold and a lower mold. Two corresponding support columns are arranged on the outer side of the lower mold, and a water pump is arranged at the front end of the support column. An accommodating cavity is opened inside the lower mold, and a cooling demoulding mechanism is arranged inside the accommodating cavity. A clamping groove is arranged at the top end of the lower mold, and a clamping block is fixedly connected to the bottom end of the upper mold, and the clamping block is adapted to the clamping groove. A driving mechanism is movably connected to the opposite side of the support column.

[0004] PET sheets are usually processed by injection molding by clamping them between an upper mold and a lower mold. However, since most existing molds cannot achieve automatic unloading, manual removal of sheets is required during the production process, which increases labor costs and affects production efficiency. Utility Model Content

[0005] The utility model aims to solve the problem that the prior art cannot realize automatic material feeding, and proposes a mold forming structure for PET products.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A mold forming structure for a PET product is designed, comprising a workbench, two support frames are arranged at the upper end of the workbench, an upper mold and a lower mold are slidably connected to the two support frames, a demoulding mechanism and a material discharge mechanism are arranged on the lower mold, the upper mold and the lower mold are moved by a driving mechanism, an avoidance groove is arranged on the workbench, and at least four legs are arranged at the lower end of the workbench;

[0008] The demoulding mechanism includes a top plate, which is slidably connected to the lower mold. Two connecting rods are arranged at the lower end of the top plate. The connecting rods pass through the lower mold and are provided with connecting plates at the ends. A return spring is arranged on the surface of the connecting rods.

[0009] Furthermore, a fixed seat is provided at the lower end of the lower mold, a connecting block is slidably connected to the fixed seat, roller one and wedge block one are provided at both ends of the connecting block, wedge block two is provided at the upper end of the workbench, wedge block two is in conflict with roller one, and roller two is provided on the connecting plate, and roller two is in conflict with wedge block one.

[0010] Furthermore, the unloading mechanism includes a mounting seat, a rack 1 is slidably connected to the mounting seat, a bracket is also provided on the mounting seat, a rotating shaft is rotatably connected to the bracket, a gear 1 and a gear 2 are respectively provided at both ends of the rotating shaft, and the gear 1 is meshingly connected to the rack 1.

[0011] Furthermore, a push plate is provided at one end of the rack one, a rack two is provided at the lower end of the workbench, a through hole is provided in the mounting seat, a guide rod is slidably connected in the through hole, and one end of the guide rod is fixedly connected with a push plate.

[0012] Furthermore, a spring is provided at one end of the push plate, a fixing block is provided at the upper end of the mounting seat, and one end of the spring is fixedly connected to the fixing block.

[0013] Furthermore, the driving mechanism includes a sliding rod and a forward and reverse screw rod, the forward and reverse screw rod is rotatably connected to the support frame, one end of the forward and reverse screw rod passes through the support frame and a driving motor is arranged at the end, the upper mold and the lower mold are threadedly connected to the forward and reverse screw rod, and the sliding rod and the upper mold and the lower mold are slidably connected to the forward and reverse screw rod.

[0014] The utility model provides a mold forming structure for PET products, and has the beneficial effect that: in the utility model, when the lower mold moves downward, the roller 1 contacts the wedge block 2, pushes the connecting block to move, and drives the wedge block 1 to move; at the same time, the roller 2 contacts the wedge block 1, moves the wedge block 1, and drives the connecting plate to move upward, thereby driving the top plate to demould the plate;

[0015] Secondly, in the utility model, when the lower mold descends, gear 2 is meshed with rack 2, driving the rotating shaft to rotate, thereby driving gear 1 to rotate and driving rack 1 to move. The movement of rack 1 drives the push plate to move, thereby pushing the plate for unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 For this utility model Figure 1 A schematic diagram of the enlarged structure of region A;

[0018] Figure 3It is a schematic cross-sectional structure diagram of the demoulding mechanism of the utility model.

[0019] In the figure: 1. workbench; 11. support frame; 12. upper mold; 13. lower mold; 14. avoidance groove; 15. support leg; 2. demoulding mechanism; 21. top plate; 22. connecting rod; 23. connecting plate; 24. reset spring; 25. fixed seat; 26. connecting block; 261. roller one; 262. wedge block one; 263. wedge block two; 264. roller two; 3. unloading mechanism; 31. mounting seat; 32. rack one; 33. bracket; 331. rotating shaft; 332. gear one; 333. gear two; 34. push plate; 35. rack two; 36. guide rod; 37. spring; 38. fixed block; 4. driving mechanism; 41. sliding rod; 42. forward and reverse screw rods; 43. driving motor. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-3 , a mold forming structure for a PET product, comprising a workbench 1, wherein two support frames 11 are arranged at the upper end of the workbench 1, an upper mold 12 and a lower mold 13 are slidably connected to the two support frames 11, a demoulding mechanism 2 and a blanking mechanism 3 are arranged on the lower mold 13, the upper mold 12 and the lower mold 13 are moved by a driving mechanism 4, an avoidance groove 14 is arranged on the workbench 1, and at least four legs 15 are arranged at the lower end of the workbench 1. In the utility model, the upper mold 12 and the lower mold 13 are driven to move toward each other by the driving mechanism 4. When the injection molding is completed, the lower mold 13 moves downward, and at the same time drives the demoulding mechanism 2 to demould the sheet, and then the sheet after demoulding is blanked by the blanking mechanism 3. The avoidance groove 14 can prevent the demoulding mechanism 2 from being squeezed when the lower mold 13 descends, thereby avoiding damage;

[0022] The demoulding mechanism 2 includes a top plate 21, which is slidably connected to the lower mold 13. Two connecting rods 22 are provided at the lower end of the top plate 21. The connecting rods 22 pass through the lower mold 13 and are provided with connecting plates 23 at the ends. A return spring 24 is provided on the surface of the connecting rods 22.

[0023] Furthermore, a fixed seat 25 is provided at the lower end of the lower mold 13, and a connecting block 26 is slidably connected to the fixed seat 25. A roller 261 and a wedge block 262 are respectively provided at both ends of the connecting block 26. A wedge block 263 is provided at the upper end of the workbench 1, and the wedge block 263 conflicts with the roller 261. A roller 264 is provided on the connecting plate 23, and the roller 264 conflicts with the wedge block 262. In the utility model, when the lower mold 13 moves downward, the roller 261 conflicts with the wedge block 263, pushes the connecting block 26 to move, and drives the wedge block 262 to move. At the same time, the roller 264 conflicts with the wedge block 262, moves through the wedge block 262, and drives the connecting plate 23 to move upward, thereby driving the top plate 21 to demould the plate.

[0024] Furthermore, the unloading mechanism 3 includes a mounting seat 31, a rack 32 is slidably connected to the mounting seat 31, a bracket 33 is also provided on the mounting seat 31, a rotating shaft 331 is rotatably connected to the bracket 33, and gear 1 332 and gear 2 333 are respectively provided at both ends of the rotating shaft 331, and the gear 1 332 is meshingly connected to the rack 1 32.

[0025] Among them, a push plate 34 is provided at one end of the rack 1 32, a rack 2 35 is provided at the lower end of the workbench 1, a through hole is provided in the mounting seat 31, a guide rod 36 is slidably connected in the through hole, and a push plate 34 is fixedly connected at one end of the guide rod 36. In the utility model, when the lower mold 13 descends, the gear 2 333 is meshed and connected with the rack 2 35, driving the rotating shaft 331 to rotate, thereby driving the gear 1 332 to rotate, and driving the rack 1 32 to move. The movement of the rack 1 32 pushes the push plate 34 to move, thereby pushing the plate to be unloaded.

[0026] In addition, a spring 37 is provided at one end of the push plate 34, and a fixed block 38 is provided at the upper end of the mounting seat 31. One end of the spring 37 is fixedly connected to the fixed block 38. In the utility model, when the lower mold 13 rises, the elastic force of the spring 37 will pull the push plate 34 to reset to prevent the upper mold 12 from squeezing the unloading mechanism 3, thereby avoiding damage to the unloading mechanism.

[0027] In addition, the driving mechanism 4 includes a sliding rod 41 and a forward and reverse screw rod 42, the forward and reverse screw rod 42 is rotatably connected to the support frame 11, one end of the forward and reverse screw rod 42 passes through the support frame 11 and is provided with a driving motor 43 at the end, the upper mold 12 and the lower mold 13 are threadedly connected to the forward and reverse screw rod 42, the sliding rod 41 and the upper mold 12 and the lower mold 13 are slidably connected to the forward and reverse screw rod 42, and in the utility model, the forward and reverse screw rod 42 is driven to rotate by the driving motor 43, thereby driving the upper mold 12 and the lower mold 13 to move toward each other.

[0028] Working mode: When working, the forward and reverse screw rods 42 are driven to rotate by the driving motor 43, thereby driving the upper mold 12 and the lower mold 13 to move toward each other. After the casting is completed, when the lower mold 13 moves downward, the roller 261 conflicts with the wedge block 263, pushes the connecting block 26 to move, and drives the wedge block 262 to move. At the same time, the roller 264 conflicts with the wedge block 262, moves through the wedge block 262, and drives the connecting plate 23 to move upward, thereby driving the top plate 21 to demould the plate. At the same time, the gear 2 333 is meshed and connected with the rack 2 35, driving the rotating shaft 331 to rotate, thereby driving the gear 1 332 to rotate, and driving the rack 1 32 to move. The movement of the rack 1 32 pushes the push plate 34 to move, thereby pushing the plate to be unloaded. The avoidance groove 14 can prevent the demoulding mechanism 2 from being squeezed when the lower mold 13 descends, thereby avoiding damage.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A mold forming structure for a PET product, comprising a workbench (1), characterized in that: Two support frames (11) are arranged at the upper end of the workbench (1), an upper mold (12) and a lower mold (13) are slidably connected to the two support frames (11), a demoulding mechanism (2) and a material discharge mechanism (3) are arranged on the lower mold (13), the upper mold (12) and the lower mold (13) are moved by a driving mechanism (4), an avoidance groove (14) is arranged on the workbench (1), and at least four legs (15) are arranged at the lower end of the workbench (1); The demoulding mechanism (2) comprises a top plate (21), the top plate (21) is slidably connected to the lower mold (13), two connecting rods (22) are arranged at the lower end of the top plate (21), the connecting rods (22) pass through the lower mold (13) and are provided with connecting plates (23) at the ends, and a return spring (24) is arranged on the surface of the connecting rods (22).

2. The mold forming structure of a PET product according to claim 1, characterized in that: A fixed seat (25) is provided at the lower end of the lower mold (13), and a connecting block (26) is slidably connected to the fixed seat (25). Two ends of the connecting block (26) are respectively provided with a roller 1 (261) and a wedge block 1 (262). A wedge block 2 (263) is provided at the upper end of the workbench (1), and the wedge block 2 (263) is in contact with the roller 1 (261). A roller 2 (264) is provided on the connecting plate (23), and the roller 2 (264) is in contact with the wedge block 1 (262).

3. The mold forming structure of a PET product according to claim 1, characterized in that: The unloading mechanism (3) comprises a mounting seat (31), a rack (32) being slidably connected to the mounting seat (31), a bracket (33) being further provided on the mounting seat (31), a rotating shaft (331) being rotatably connected to the bracket (33), a gear (332) and a gear (333) being respectively provided at both ends of the rotating shaft (331), and the gear (332) being meshingly connected to the rack (32).

4. The mold forming structure of a PET product according to claim 3, characterized in that: A push plate (34) is provided at one end of the rack 1 (32), a rack 2 (35) is provided at the lower end of the workbench (1), a through hole is provided in the mounting seat (31), a guide rod (36) is slidably connected in the through hole, and a push plate (34) is fixedly connected to one end of the guide rod (36).

5. The mold forming structure of a PET product according to claim 4, characterized in that: A spring (37) is arranged at one end of the push plate (34), a fixing block (38) is arranged at the upper end of the mounting seat (31), and one end of the spring (37) is fixedly connected to the fixing block (38).

6. The mold forming structure of a PET product according to claim 1, characterized in that: The driving mechanism (4) comprises a sliding rod (41) and a forward and reverse screw rod (42), wherein the forward and reverse screw rod (42) is rotatably connected to the support frame (11), one end of the forward and reverse screw rod (42) passes through the support frame (11) and a driving motor (43) is arranged at the end, the upper mold (12) and the lower mold (13) are threadedly connected to the forward and reverse screw rod (42), and the sliding rod (41) and the upper mold (12) and the lower mold (13) are slidably connected to the forward and reverse screw rod (42).

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