Oil seal vulcanization mold

Abstract

The utility model relates to the technical field of vulcanization molds, in particular to an oil seal vulcanization mold which comprises a bottom plate, a lower mold, an upper mold and a pressing plate, a cavity is formed in the bottom plate, a limiting hole is formed in the bottom plate, a limiting rod is arranged on the lower surface of the pressing plate, a plurality of oil seal cavities are formed in the lower mold, and a jacking assembly and a transmission assembly are arranged in the cavity. The jacking assembly comprises a jacking ring and a movable plate, the jacking ring is arranged in the oil seal cavity in a sliding mode, the jacking ring is connected with the transverse plate in the cavity through a jacking rod, a cam is rotationally arranged in the cavity, the movable plate is arranged in the limiting hole in a sliding mode, and a first spring is arranged between the movable plate and the bottom of the limiting hole. According to the oil seal demolding device, the jacking assembly is arranged, downward pressing of the pressing plate is converted into rotation of the cam through the movable plate, the first spring and the transmission assembly, the cam rotates to push the jacking ring to ascend and descend, the oil seal is jacked up from the oil seal cavity through ascending and descending of the jacking ring, the oil seal is automatically demolded, workers can conveniently collect the oil seal, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vulcanization molds, in particular to an oil seal vulcanization mold. Background Art

[0002] The production of oil seals requires the use of rubber vulcanization technology, that is, by vulcanizing at a suitable temperature and pressure for a certain period of time, a rubber product with excellent performance can be obtained. In this process, a vulcanization mold is required, and rubber is injected into the mold for vulcanization molding, so that the required oil seals can be mass-produced. In actual production, the molded oil seals are easy to stick to the lower mold, and workers need to manually remove the oil seals from the lower mold. However, due to the large number of oil seals on the lower mold, demolding is more troublesome, affecting work efficiency. Utility Model Content

[0003] The utility model provides an oil seal vulcanization mold, which is used to solve the problems raised in the above background technology.

[0004] The utility model is realized by the following technical scheme: an oil seal vulcanization mold, comprising a bottom plate, a lower mold, an upper mold and a pressure plate, the bottom plate is provided with a lower mold, the upper mold is provided with a pressure plate, the upper mold is located above the lower mold, a plurality of oil seal cavities are opened on the lower mold, a cavity is provided inside the bottom plate, a jacking assembly and a transmission assembly are provided in the cavity, limiting holes are provided at the four corners of the upper surface of the bottom plate, and limiting rods are provided at the corresponding limiting holes on the lower surface of the pressure plate;

[0005] The lifting assembly includes a top ring and a movable plate, the top ring is slidably arranged in the oil seal cavity, a plurality of push rods are connected to the lower surface of the top ring, the lower ends of all the push rods slide through the lower mold to the cavity and are commonly connected to a cross plate, a cam is rotatably arranged in the middle part of the cavity, the cam abuts against the lower surface of the cross plate, the movable plate is slidably arranged in the left front side limiting hole, a first spring is arranged between the movable plate and the bottom of the limiting hole, and the movable plate and the cam are transmitted through the transmission assembly.

[0006] Optionally, the transmission assembly includes a first gear and a third gear. A first rack which is vertically arranged and has a tooth surface facing right is connected to the right side of the movable plate. The right side of the first rack is meshed with the first gear. The first gear is rotatably arranged in a cavity. A second gear is coaxially arranged on the rear side of the first gear. A second rack is meshed under the second gear. The second rack is laterally slidable in the cavity. The right side of the second rack is meshed with the third gear. The third gear is coaxially arranged with the cam.

[0007] Optionally, a second spring is provided between the left end of the second rack and the inner wall of the cavity, and the second rack is slidably disposed in the cavity through a limit block.

[0008] Optionally, the contact portions of the transverse plate and the cam are all quenched.

[0009] Compared with the prior art, the utility model has the following beneficial effects:

[0010] The utility model is provided with a lifting assembly, which converts the downward pressure of the pressure plate into the rotation of the cam through the movable plate, the first spring and the transmission assembly. The rotation of the cam will push the top ring to rise and fall. The oil seal is lifted from the oil seal cavity through the lifting of the top ring, so that the oil seal is automatically demoulded, which is convenient for workers to collect the oil seal and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0013] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0014] In the figure, 1, bottom plate; 11, limiting hole; 2, lower die; 21, oil seal cavity; 3, upper die; 4, pressure plate; 41, limiting rod; 5, cavity; 6, lifting assembly; 61, top ring; 62, ejector rod; 63, cross plate; 64, cam; 7, transmission assembly; 71, movable plate; 72, first spring; 73, first rack; 74, first gear; 75, second rack; 76, third gear; 77, second spring; 78, limiting block. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] Example: See Figures 1 to 3 The utility model provides an oil seal vulcanization mold, comprising a bottom plate 1, a lower mold 2, an upper mold 3 and a pressing plate 4. The bottom plate 1 is provided with a lower mold 2, the upper mold 3 is provided with a pressing plate 4, the upper mold 3 is located above the lower mold 2, and the lower mold 2 is provided with a plurality of oil seal cavities 21. A cavity 5 is provided inside the bottom plate 1, and a lifting assembly 6 and a transmission assembly 7 are provided in the cavity 5. Limiting holes 11 are provided at the four corners of the upper surface of the bottom plate 1, and limiting rods 41 are provided at the lower surface of the pressing plate 4 corresponding to the limiting holes 11;

[0017] The lifting assembly 6 includes a top ring 61 and a movable plate 71. The top ring 61 is slidably arranged in the oil seal cavity 21. A plurality of top rods 62 are connected to the lower surface of the top ring 61. The lower ends of all the top rods 62 slide through the lower mold 2 to the cavity 5 and are commonly connected to the cross plate 63. A cam 64 is rotatably arranged in the middle part of the cavity 5. The cam 64 abuts against the lower surface of the cross plate 63. The movable plate 71 is slidably arranged in the left front limiting hole 11. A first spring 72 is arranged between the movable plate 71 and the bottom of the limiting hole 11. The movable plate 71 and the cam 64 are transmitted through the transmission assembly 7. The downward pressure of the pressure plate 4 is converted into the rotation of the cam 64 through the movable plate 71, the first spring 72 and the transmission assembly 7. The rotation of the cam 64 will cause the top ring 61 to rise and fall on the lower mold 2. The oil seal is removed from the oil seal cavity 21 through the lifting and lowering of the top ring 61, which is convenient for workers to collect the oil seal.

[0018] Specifically, the right side of the movable plate 71 is connected to a first rack 73 which is vertically arranged and has a tooth surface to the right. The right side of the first rack 73 is meshed with a first gear 74. The first gear 74 is rotatably arranged in the cavity 5. A second gear is coaxially arranged on the rear side of the first gear 74. A second rack 75 is meshed under the second gear. The second rack 75 is laterally slidably arranged in the cavity 5. A third gear 76 is meshed on the right side of the second rack 75. The third gear 76 is coaxially arranged with the cam 64. When the pressure plate 4 is pressed down, the limit rod 41 is inserted into the limit hole 11, pushing the movable plate 71 to move downward, and the first rack 73 moves downward accordingly, and then pushes the first gear 74 on the rear side to rotate, driving the second gear to rotate, the second rack 75 moves to the right, pushing the third gear 76 to rotate, the cam 64 rotates counterclockwise, the cross plate 63 moves downward, and the top ring 61 moves downward accordingly.

[0019] Specifically, a second spring 77 is provided between the left end of the second rack 75 and the inner wall of the cavity 5 to increase the reset force of the transmission assembly 7. The second rack 75 is slidably disposed in the cavity 5 through a limit block 78 to reduce friction.

[0020] Specifically, the contacting parts of the transverse plate 63 and the cam 64 are all quenched to increase their wear resistance.

[0021] Working principle: the pressing plate 4 is pressed down, the limiting rod 41 is inserted into the limiting hole 11, pushing the movable plate 71 to move downward, the first rack 73 moves downward, pushing the first gear 74 to rotate, the first gear 74 drives the second gear to rotate, the second gear pushes the second rack 75 to move right, the second rack 75 pushes the third gear 76 to rotate, the third gear 76 drives the cam 64 to rotate, the cross plate 63 descends, and the top ring 61 descends accordingly, and then the rubber is vulcanized in the mold. After vulcanization is completed, the pressing plate 4 moves up, the first spring 72 pushes the movable plate 71 to move upward, and the second spring 77 pulls the second rack 75 to move to the left, which is manifested as the rotation of the cam, lifting the cross plate 63, and the top ring 61 rises accordingly, lifting the oil seal from the oil seal cavity 21, and then the workers can collect the oil seal.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oil seal vulcanization mold, comprising a base plate (1), a lower mold (2), an upper mold (3) and a pressing plate (4), characterized in that: The bottom plate (1) is provided with a lower die (2), the upper die (3) is provided with a pressure plate (4), the upper die (3) is located above the lower die (2), the lower die (2) is provided with a plurality of oil seal cavities (21), a cavity (5) is provided inside the bottom plate (1), a lifting assembly (6) and a transmission assembly (7) are provided inside the cavity (5), limiting holes (11) are provided at the four corners of the upper surface of the bottom plate (1), and limiting rods (41) are provided on the lower surface of the pressure plate (4) corresponding to the limiting holes (11); The lifting assembly (6) comprises a top ring (61) and a movable plate (71). The top ring (61) is slidably arranged in the oil seal cavity (21). The lower surface of the top ring (61) is connected to a plurality of push rods (62). The lower ends of all the push rods (62) slide through the lower mold (2) to the cavity (5) and are commonly connected to a cross plate (63). A cam (64) is rotatably arranged in the middle of the cavity (5). The cam (64) abuts against the lower surface of the cross plate (63). The movable plate (71) is slidably arranged in the left front side limiting hole (11). A first spring (72) is arranged between the movable plate (71) and the bottom of the limiting hole (11). The movable plate (71) and the cam (64) are transmitted through the transmission assembly (7).

2. The oil seal vulcanization mold according to claim 1, characterized in that: The transmission assembly (7) comprises a first gear (74) and a third gear (76). The right side of the movable plate (71) is connected to a first rack (73) which is vertically arranged and has a tooth surface facing rightward. The right side of the first rack (73) is meshed with the first gear (74). The first gear (74) is rotatably arranged in the cavity (5). A second gear is coaxially arranged at the rear side of the first gear (74). A second rack (75) is meshed under the second gear. The second rack (75) is transversely slidably arranged in the cavity (5). The right side of the second rack (75) is meshed with the third gear (76). The third gear (76) is coaxially arranged with the cam (64).

3. The oil seal vulcanization mold according to claim 2, characterized in that: A second spring (77) is provided between the left end of the second rack (75) and the inner wall of the cavity (5), and the second rack (75) is slidably disposed in the cavity (5) via a limit block (78).

4. The oil seal vulcanization mold according to claim 1, characterized in that: The contacting parts of the transverse plate (63) and the cam (64) are all subjected to quenching treatment.

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