Forming die of rubber precision o-shaped ring

Abstract

The utility model discloses a forming die of a rubber precision o-shaped ring, which belongs to the field of rubber processing, and comprises a lower die and an upper die, one side of the lower die and one side of the upper die are respectively provided with a groove, the upper part of the upper die is provided with a material inlet, and the material inlet is communicated with the grooves. If a finished rubber ring needs to be demoulded, a user can rotate a handle, when the user rotates the handle anticlockwise, an inserting rod can be driven to slide towards the outer part of a mounting block, so that a limiting block is driven to be separated from the inner part of the inserting block, and when the limiting block is separated from the inner part of the inserting block and the upper mould is reset, the rubber ring can be demoulded. Through the design, the upper mold and the lower mold can be limited, the handle is rotated when the rubber ring is demolded, and the upper mold can be automatically reset due to the rebound of the first spring, so that a user can conveniently take out the finished rubber ring, and the use convenience of the device is improved.

Description

Technical Field

[0001] The utility model relates to the field of rubber processing, and more specifically to a molding die for a rubber precision O-ring. Background Art

[0002] Rubber O-rings are devices used to seal pistons in reciprocating hydraulic cylinders and are made of polyurethane TPU, CPU, and rubber.

[0003] Chinese patent authorization announcement number: CN208148387U provides, including a molding core, a molding core having a molding cavity, a molding core having a top opening on the top and a material buffer cavity connected to the molding cavity through a feed channel, a pressure plate sealed and slidably connected to the material buffer cavity is provided in the material buffer cavity, and the pressure plate is connected to the bottom of the material buffer cavity through a tension spring. However, in the above patent, the upper mold and the lower mold are connected by a guide column, and there is a lack of a supporting mechanism between the upper mold and the lower mold. When the rubber ring is demolded, the staff needs to support the upper mold and then take out the molded rubber ring, which causes inconvenience in demolding and limitations in use.

[0004] Therefore, a molding die for a rubber precision o-ring is proposed for the problems referred to above. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the problems existing in the prior art, the utility model aims to provide a molding die for a rubber precision O-ring, which can realize the function of facilitating demoulding.

[0007] 2. Technical solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] A forming mold for a rubber precision O-ring comprises a lower mold and an upper mold, wherein a groove is provided on one side of the lower mold and the upper mold, a feed port is provided on the top of the upper mold, the feed port is communicated with the groove, a countersunk hole is provided on the bottom surface of the upper mold, a sliding rod is fixedly connected to the inside of the countersunk hole, a No. 1 spring is sleeved on the outer wall of the sliding rod, the top of the No. 1 spring is fixedly connected to the end in the countersunk hole, the sliding rod is slidably connected to the lower mold, a plug-in block is fixedly connected to the bottom end of the upper mold, a square groove is provided on the top surface of the lower mold, the plug-in block is slidably connected to the square groove, a mounting block is fixedly connected to the side surface of the lower mold, and a plug-in rod is arranged inside the mounting block.

[0010] Furthermore, the end of the plug rod is fixedly connected to a limiting block, the outer wall of the limiting block is slidably connected to the interior of the lower mold, and the limiting block is clamped in the interior of the plug block.

[0011] Furthermore, the outer wall of the plug rod and the smaller diameter part of the mounting block fit and slide together, and the outer wall of the limit block and the larger diameter part of the mounting block fit and slide together.

[0012] Furthermore, a No. 2 spring is sleeved on the outer wall of the plug-in rod, and the No. 2 spring is located inside the mounting block.

[0013] Furthermore, the end of the No. 2 spring is fixedly connected to one side of the limit block.

[0014] Furthermore, a handle is rotatably connected to the outer wall of the plug rod, and a rounded corner is formed on one side of the handle.

[0015] Furthermore, a heat conducting plate is fixedly connected to the bottom end of the lower mold, and a heat dissipation fan is fixedly connected to a side of the heat conducting plate away from the lower mold.

[0016] 3. Beneficial effects

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] In the present solution, if the rubber ring of the finished product is to be demolded, the user can turn the handle. When the user turns the handle counterclockwise, the rounded corner on one side of the handle will drive the plug-in rod to slide toward the outside of the mounting block, thereby driving the limit block to disengage from the inside of the plug-in block. After the limit block is disengaged from the inside of the plug-in block, the No. 1 spring in an elastically compressed state rebounds, driving the upper mold to reset, and then the rubber ring of the finished product can be taken out of the groove. Through this design, the upper mold and the lower mold can be limited, and when the rubber ring is demolded, the handle is turned, and the upper mold can be automatically reset due to the rebound of the No. 1 spring, so that the user can take out the rubber ring of the finished product, thereby improving the convenience of using the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model in front cross-section;

[0020] Figure 2 This is a schematic diagram of the upper mold structure in the utility model;

[0021] Figure 3 It is a schematic diagram of the positional relationship between the plug-in rod, the limit block and the mounting block in the utility model;

[0022] Figure 4 It is a schematic diagram of the positional relationship between the heat dissipation fan and the lower mold in the utility model.

[0023] Description of the numbers in the figure:

[0024] 1. Lower mold; 11. Upper mold; 12. Feed port; 13. Groove; 14. Countersunk hole; 15. Sliding rod; 16. Spring No. 1; 17. Plug-in block; 2. Mounting block; 21. Plug-in rod; 22. Limit block; 23. Spring No. 2; 24. Handle; 25. Square groove; 3. Heat conduction plate; 31. Cooling fan. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] Example:

[0029] See also Figure 1-4A rubber precision o-ring forming mold, comprising a lower mold 1 and an upper mold 11, a groove 13 is provided on one side of the lower mold 1 and the upper mold 11, a feed port 12 is provided above the upper mold 11, the feed port 12 and the groove 13 are communicated, a countersunk hole 14 is provided on the bottom surface of the upper mold 11, a sliding rod 15 is fixedly connected inside the countersunk hole 14, a No. 1 spring 16 is sleeved on the outer wall of the sliding rod 15, the top of the No. 1 spring 16 is fixedly connected to the end in the countersunk hole 14, the sliding rod 15 is slidably connected to the lower mold 1, and the bottom end of the upper mold 11 is fixedly connected to the plug The connecting block 17 and the top surface of the lower mold 1 are provided with a square groove 25, the connecting block 17 and the square groove 25 are slidably connected, the side surface of the lower mold 1 is fixedly connected with the mounting block 2, and the interior of the mounting block 2 is provided with a connecting rod 21. In this scheme, when the lower mold 1 moves downward, the sliding rod 15 will slide inside the lower mold 1. During this process, the No. 1 spring 16 will be squeezed by the upper mold 11 and elastically deform and shrink. When the upper mold 11 and the lower mold 1 are fitted, the No. 1 spring 16 will be completely inside the countersunk hole 14, and the connecting block 17 will be plugged into the interior of the groove 13.

[0030] See also Figure 1-4 The end of the plug-in rod 21 is fixedly connected to the limiting block 22, the outer wall of the limiting block 22 is slidably connected to the interior of the lower mold 1, and the limiting block 22 is clamped in the interior of the plug-in block 17. In this solution, the plug-in rod 21 slides inside the mounting block 2, thereby driving the limiting block 22 to complete the plug-in inside the plug-in block 17.

[0031] See also Figure 1-4 The outer wall of the plug rod 21 and the smaller diameter part of the mounting block 2 slide in close contact with each other, and the outer wall of the limit block 22 and the larger diameter part of the mounting block 2 slide in close contact with each other. In this solution, the limit block 22 can be prevented from sliding out of the mounting block 2 by sliding in close contact with each other.

[0032] See also Figure 1-4 The outer wall of the plug-in rod 21 is sleeved with a No. 2 spring 23, and the No. 2 spring 23 is located inside the mounting block 2. In this solution, the No. 2 spring 23 limits the plug-in rod 21 in the mounting block 2 through the elastic potential energy of the No. 2 spring 23 itself.

[0033] See also Figure 1-4 The end of the No. 2 spring 23 is fixedly connected to one side of the limit block 22. In this solution, when the limit block 22 slides along the direction outside the mounting block 2, it will squeeze the No. 2 spring 23 and compress the No. 2 spring 23 and store a certain amount of elastic potential energy.

[0034] See also Figure 1-4The outer wall of the plug rod 21 is rotatably connected to a handle 24, and one side of the handle 24 is provided with a rounded corner. In this solution, when the user rotates the handle 24 counterclockwise, due to the rounded corner on one side of the handle 24, the plug rod 21 will be driven to slide toward the outside of the mounting block 2, thereby driving the limit block 22 to disengage from the inside of the plug block 17.

[0035] See also Figure 1-4 A heat conducting plate 3 is fixedly connected to the bottom end of the lower mold 1, and a cooling fan 31 is fixedly connected to the side of the heat conducting plate 3 away from the lower mold 1. In this solution, the cooling fan 31 can cool the rubber ring in the groove 13 to increase the cooling and molding speed of the rubber ring.

[0036] Working principle: Before use, the user should first check whether the device is damaged, press down the upper mold 11, and fit the upper mold 11 and the lower mold 1 together. After confirming that the device is not damaged, inject the rubber raw material into the interior of the groove 13 through the feed port 12, and then turn the handle 24 to plug the limit block 22 into the interior of the plug-in block 17 to complete the limit between the upper mold 11 and the lower mold 1. After the rubber raw material cools down, turn the handle 24 again. When the user turns the handle 24 counterclockwise, because one side of the handle 24 has a rounded corner, it will drive the plug-in rod 21 to slide toward the outside of the mounting block 2, thereby driving the limit block 22 to detach from the interior of the plug-in block 17. When the limit block 22 detaches from the interior of the plug-in block 17, the No. 1 spring 16 in an elastically compressed state rebounds, driving the upper mold 11 to reset, and then the finished rubber ring can be taken out of the groove 13.

[0037] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A molding die for a rubber precision O-ring, comprising a lower mold (1) and an upper mold (11), characterized in that: A groove (13) is provided on one side of the lower mold (1) and the upper mold (11); a material inlet (12) is provided on the top of the upper mold (11); the material inlet (12) and the groove (13) are communicated; a countersunk hole (14) is provided on the bottom surface of the upper mold (11); a sliding rod (15) is fixedly connected inside the countersunk hole (14); a No. 1 spring (16) is sleeved on the outer wall of the sliding rod (15); the top of the No. 1 spring (16) is fixedly connected to the end inside the countersunk hole (14); the sliding rod (15) and the lower mold (1) are slidably connected; a plug-in block (17) is fixedly connected at the bottom end of the upper mold (11); a square groove (25) is provided on the top surface of the lower mold (1); the plug-in block (17) and the square groove (25) are slidably connected; a mounting block (2) is fixedly connected to the side surface of the lower mold (1); a plug-in rod (21) is provided inside the mounting block (2).

2. A rubber precision o-ring forming mold according to claim 1, characterized in that: The end of the plug-in rod (21) is fixedly connected to a limit block (22), the outer wall of the limit block (22) is slidably connected to the inside of the lower mold (1), and the limit block (22) is clamped inside the plug-in block (17).

3. The molding die for a rubber precision O-ring according to claim 2, characterized in that: The outer wall of the plug rod (21) and the smaller diameter portion of the inner part of the mounting block (2) fit and slide, and the outer wall of the limit block (22) and the larger diameter portion of the inner part of the mounting block (2) fit and slide.

4. The molding die for a rubber precision O-ring according to claim 3, characterized in that: A No. 2 spring (23) is sleeved on the outer wall of the plug-in rod (21), and the No. 2 spring (23) is located inside the mounting block (2).

5. The molding die for a rubber precision O-ring according to claim 4, characterized in that: The end of the No. 2 spring (23) is fixedly connected to one side of the limiting block (22).

6. The molding die for a rubber precision O-ring according to claim 5, characterized in that: The outer wall of the plug rod (21) is rotatably connected to a handle (24), and one side of the handle (24) is provided with a rounded corner.

7. The molding die for a rubber precision O-ring according to claim 1, characterized in that: A heat conducting plate (3) is fixedly connected to the bottom end of the lower mould (1), and a cooling fan (31) is fixedly connected to the side of the heat conducting plate (3) away from the lower mould (1).

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