Forming mold convenient to demold
By designing a mold that is easy to release, the separation of the corrugated pipe and the die core is achieved by using screws and airflow channels, which solves the problem of difficult and easy damage to the bellows in the prior art, improves the demolding efficiency and reduces damage.
Patent Information
- Application Number
- CN202421254485.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-03
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-06-03
AI Technical Summary
In the existing molding and forming technology, the release of corrugated pipes is difficult and it is easy to cause damage to corrugated pipes.
A molding mold is designed for easy demolding, including an upper mold, a lower mold and a die core. The die core consists of a first core and a second core. The separation of the die core and the corrugated pipe is achieved through a screw and an air flow channel. .
By rotating the screw and passing high-pressure air, separation between the corrugated pipe and the die core is achieved, which significantly improves the demolding efficiency and reduces the damage to the corrugated pipe.
Smart Images
Figure CN222431374U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of compression molding, in particular to a molding die which is easy to demould. Background Art
[0002] In the prior art, compression molding generally involves forming a mold cavity by combining an upper mold body, a lower mold body, and a mold core, and then placing the rubber in the mold for hot pressing. For the molding of a corrugated tube, the mold core is corrugated, and the corrugated tube is wrapped around the mold core after molding. Due to the presence of corrugated protrusions, demoulding is difficult and the corrugated tube is easily damaged. Utility Model Content
[0003] In order to solve the above technical deficiencies, the utility model provides a molding die that is easy to demould, which can facilitate the demoulding of the bellows from the mold core after the bellows is formed, so as to improve the processing efficiency and reduce the damage to the bellows.
[0004] The utility model discloses a molding die that is easy to demould, comprising an upper mold body, a lower mold body and a mold core, wherein the mold core is arranged between the upper mold body and the lower mold body, and a mold cavity is formed between the upper mold body, the lower mold body and the mold core, wherein the shape of the mold cavity is consistent with the shape of a corrugated pipe to be molded, and the structure of the mold core is as follows: comprising a first core part and a second core part, wherein a columnar concave structure is arranged at one end of the first core part, and a columnar convex structure is arranged at one end of the second core part, wherein the columnar convex structure is plugged in with the columnar concave structure, and the diameter of the columnar convex structure is smaller than that of the second core part. The inner diameter of the columnar concave structure is smaller than the diameter of the first core part. A screw hole is axially arranged in the first core part, and a screw rod is arranged in the screw hole. The screw rod extends to the interior of the first columnar concave cavity. The end of the screw rod is rotatably connected with the columnar convex structure of the second core part. An air cavity is arranged in the second core part, and an air nozzle is arranged at the end of the second core part. The air nozzle is connected with the air cavity. An air flow channel is arranged in the second core part, and the air flow channel is connected with the air cavity. The air flow channel extends to the connection between the columnar convex structure and the second core part.
[0005] The columnar protrusion structure on the second core part includes a cylindrical sealing part connected to the end of the first core part and a rectangular guide part arranged at the end of the cylindrical sealing part. The columnar concave structure on the first core part matches the columnar protrusion structure on the second core part, and the screw is rotatably connected to the end of the rectangular guide part.
[0006] One or more grooves are arranged at intervals on the circumferential side wall of the cylindrical sealing part, and a sealing ring is arranged in the groove. The sealing ring is used for sealing between the columnar concave structure and the cylindrical sealing part.
[0007] An annular air passage is arranged on the columnar protrusion structure at the connection between the columnar protrusion structure and the first core part, and the air flow channel is communicated with the annular air passage.
[0008] There are a plurality of air flow channels arranged in a circular array inside the first core.
[0009] The utility model provides a molding die which is easy to demould. Rotating the screw can generate a certain gap between the first core part and the second core part. Then, high-pressure air is introduced into the air cavity through the air nozzle and output from the air flow channel and the gap, so that the bellows and the mold core are separated and not bonded, which facilitates the detachment of the bellows from the mold core, greatly improves the demoulding efficiency, and avoids damage to the bellows. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a schematic diagram of the structure of the utility model;
[0011] Figure 2 for Figure 1 A partial enlarged schematic diagram of . DETAILED DESCRIPTION
[0012] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.
[0013] Embodiment 1:
[0014] like Figure 1 As shown, the utility model discloses a molding die that is easy to demould, including an upper mold body 1, a lower mold body 2 and a mold core, the mold core is arranged between the upper mold body 1 and the lower mold body 2, and a mold cavity is formed between the upper mold body 1, the lower mold body 2 and the mold core, the shape of the mold cavity is consistent with the shape of the corrugated pipe 3 to be formed, and the structure of the mold core is: including a first core part 4 and a second core part 5, one end of the first core part 4 is provided with a columnar concave structure 7, and one end of the second core part 5 is provided with a columnar convex structure 6, the columnar convex structure 6 is plugged with the columnar concave structure 7, the diameter of the columnar convex structure 6 is smaller than the diameter of the second core part 5, and the columnar concave structure 7 is provided with a columnar convex structure 6. The inner diameter of the concave structure 7 is smaller than the diameter of the first core portion 4. A screw hole is axially arranged in the first core portion 4, and a screw rod 10 is arranged in the screw hole. The screw rod 10 extends to the inside of the first columnar concave cavity. The end of the screw rod 10 is rotatably connected to the columnar convex structure 6 of the second core portion 5. An air cavity 11 is arranged inside the second core portion 5, and an air nozzle 12 is arranged at the end of the second core portion 5. The air nozzle 12 is connected to the air cavity 11. An air flow channel 13 is arranged in the second core portion 5, and the air flow channel 13 is connected to the air cavity 11. The air flow channel 13 extends to the connection between the columnar convex structure 6 and the second core portion 5.
[0015] The mold cavity formed by the upper mold body 1, the lower mold body 2 and the mold core has a corrugated convex structure on the inner and outer surfaces. Of course, the specific shape of the mold cavity is set according to actual needs. The formed bellows 3 is coated on the mold core, and the heated rubber has a certain viscosity and is firmly connected to the mold core. A rotating handle can be provided at the end of the screw 10 to facilitate the rotation of the screw 10. During actual processing, the screw 10 rotates so that the first core part 4 and the second core part 5 are docked to form a whole. After the first core part 4 and the second core part 5 are docked, a corrugated structure is formed on the outside. After molding, the upper mold body 1 and the lower mold body 2 are removed, and the molded bellows 3 is now coated on the mold core. The screw 10 is rotated to push the columnar protrusion structure 6 of the second core 5 outward from the columnar concave structure 7 of the first core 4 to a certain distance, so that a certain gap is generated between the end of the first core 4 and the end of the second core 5. In this process, the bellows 3 is stretched. Since the elastic part of the bellows 3 has a certain stretching capacity, the bellows 3 will not be damaged. After a certain gap is generated between the first core 4 and the second core 5, the end of the air flow channel 13 is located within the gap range. The air nozzle 12 is connected to the high-pressure air pipe, and a quick connector can be used. Compressed air is introduced into the air cavity 11, and the compressed air moves outward to the first core 4, the second core 5 and the bellows 3 through the air flow channel 13 and the gap between the first core 4 and the second core 5, thereby separating the bellows 3 from the mold core and expanding the bellows 3, so as to facilitate the removal of the bellows 3 from the mold core, so as to improve the demoulding efficiency of the bellows 3 and avoid damage to the bellows 3 during the demoulding process.
[0016] The columnar protrusion structure 6 on the second core 5 includes a cylindrical sealing portion 8 connected to the end of the first core 4 and a rectangular parallelepiped guide portion 9 arranged at the end of the cylindrical sealing portion. The columnar concave structure 7 on the first core 4 matches the columnar protrusion structure 6 on the second core 5, and the screw 10 is rotatably connected to the end of the rectangular parallelepiped guide portion 9. In order to allow the compressed air to flow from the gap between the first core 4 and the second core 5 to the bellows 3 as much as possible, the columnar protrusion structure 6 includes a cylindrical sealing portion 8, and the cylindrical sealing portion 8 and the columnar concave structure 7 are more closely matched, and the sealing performance is relatively good. At the same time, a rectangular guide portion 9 is provided at the end of the cylindrical sealing portion 8, and the rectangular guide portion 9 cooperates with the columnar concave structure 7, so that when the screw 10 drives the columnar protrusion structure 6 and the second core portion 5 to move, the second core portion 5 will not rotate, thereby keeping the first core portion 4 and the second core portion 5 relatively corresponding to each other after the cooperation, and the quality of the formed bellows 3 can be guaranteed.
[0017] One or more grooves are arranged at intervals on the circumferential side wall of the cylindrical sealing part 8, and a sealing ring 14 is arranged in the groove, and the sealing ring 14 is used for sealing between the cylindrical concave structure 7 and the cylindrical sealing part 8. The design of the sealing ring 14 can further improve the sealing performance between the cylindrical sealing part 8 and the cylindrical concave structure 7, ensure that the high-pressure air can better separate the bellows 3 from the mold core, and facilitate demoulding.
[0018] An annular air passage 15 is provided on the columnar protrusion structure 6 at the connection between the columnar protrusion structure 6 and the first core part 4, and the air flow channel 13 is connected to the annular air passage 15. The design of the annular air passage 15 can deliver high-pressure air to the annular air passage 15 through the air flow channel 13, and enter the gap between the first core part 4 and the second core part 5, so as to improve the air flow delivery more stably.
[0019] There are multiple air flow channels 13 in a circular array inside the first core 4. The design of multiple air flow channels 13 further improves the stability of high-pressure air delivery.
[0020] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0021] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be an interactive relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0022] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0023] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simplified modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.
Claims
1. A molding die that is easy to demould, comprising an upper mold body, a lower mold body and a mold core, characterized in that: The mold core is arranged between the upper mold body and the lower mold body, and a mold cavity is formed between the upper mold body, the lower mold body and the mold core. The shape of the mold cavity is consistent with the shape of the corrugated pipe to be formed. The structure of the mold core is: it includes a first core part and a second core part, one end of the first core part is provided with a columnar concave structure, and one end of the second core part is provided with a columnar convex structure, the columnar convex structure and the columnar concave structure are cooperated and plugged, the diameter of the columnar convex structure is smaller than the diameter of the second core part, and the inner diameter of the columnar concave structure is smaller than the diameter of the first core part, and a screw hole is axially arranged in the first core part, and a screw rod is arranged in the screw hole, and the screw rod extends to the inside of the first columnar concave cavity, and the end of the screw rod is rotatably connected with the columnar convex structure of the second core part, an air cavity is arranged in the second core part, and an air nozzle is arranged at the end of the second core part, and the air nozzle is connected with the air cavity, and an air flow channel is arranged in the second core part, and the air flow channel is connected with the air cavity, and the air flow channel extends to the connection between the columnar convex structure and the second core part.
2. A molding die that is easy to demould according to claim 1, characterized in that: The columnar protrusion structure on the second core part includes a cylindrical sealing part connected to the end of the first core part and a rectangular guide part arranged at the end of the cylindrical sealing part. The columnar concave structure on the first core part matches the columnar protrusion structure on the second core part, and the screw is rotatably connected to the end of the rectangular guide part.
3. A molding die for easy demoulding according to claim 2, characterized in that: One or more grooves are arranged at intervals on the circumferential side wall of the cylindrical sealing part, and a sealing ring is arranged in the groove. The sealing ring is used for sealing between the columnar concave structure and the cylindrical sealing part.
4. A molding die that is easy to demould according to claim 1, 2 or 3, characterized in that: An annular air passage is arranged on the columnar protrusion structure at the connection between the columnar protrusion structure and the first core part, and the air flow channel is communicated with the annular air passage.
5. The molding die for easy demoulding according to claim 4, characterized in that: There are a plurality of air flow channels arranged in a circular array inside the first core.