Rubber mold for positioning suspended nut

Abstract

The utility model belongs to the technical field of rubber forming dies, and particularly relates to a rubber die for positioning a suspended nut, which comprises an upper die, a middle die, a lower die and a positioning block, a forming die cavity and a positioning cavity are formed in the upper die, the middle die and the lower die, the forming die cavity is used for forming a rubber part, and the positioning cavity is communicated with the forming die cavity. The positioning block is detachably arranged in the positioning cavity and separates the forming die cavity from the positioning cavity, the surface, connected with the forming die cavity, of the positioning block forms the side wall of the forming die cavity, the positioning block is provided with a through threaded through hole, the threaded through hole is internally connected with a screw rod, the screw rod penetrates through the positioning block and extends into the forming die cavity, and the nut is connected to the screw rod. And the nut is fixed in the forming die cavity through the screw rod. The nut is installed through the positioning block assembled in a positioning mode, suspended positioning of the nut is achieved, and the positioning precision of the nut is guaranteed. And the positioning block is detachably arranged in the positioning cavity, so that the positioning block and the screw rod connected to the nut can be detached conveniently after vulcanization molding.

Description

Technical Field

[0001] This utility model belongs to the field of rubber molding die technology, specifically relating to a rubber die for positioning suspended nuts. Background Technology

[0002] Vulcanization is the final step in rubber processing. After vulcanization, rubber is shaped into practical rubber products. Rubber vulcanization is a process in which a chemical reaction occurs between the raw rubber and the vulcanizing agent under pressure, heat, or radiation. This reaction transforms linear macromolecules into three-dimensional network macromolecules, fundamentally altering the rubber's physical, mechanical, and other properties. During vulcanization, molding is often used to shape the product. In the production of rubber products with connecting nuts, the nuts are typically embedded in the rubber surface. Before molding, the nuts need to be suspended in the mold, making nut positioning difficult and prone to displacement during injection, leading to inaccurate positioning. Summary of the Invention

[0003] In view of the defects of the prior art, the purpose of this utility model is to provide a rubber mold for positioning suspended nuts, which is used to produce rubber products with embedded connecting nuts.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a rubber mold for positioning a suspended nut, comprising an upper mold, a middle mold, a lower mold, and a positioning block. The upper mold, middle mold, and lower mold have a forming cavity and a positioning cavity formed inside. The forming cavity is used to form a rubber part. The positioning cavity is connected to the forming cavity. The positioning block is detachably disposed in the positioning cavity and separates the forming cavity and the positioning cavity. The surface of the positioning block that connects with the forming cavity forms the side wall of the forming cavity. The positioning block is provided with a through threaded hole. A screw is connected in the threaded hole. The screw passes through the positioning block and extends into the forming cavity. The nut is connected to the screw and is fixed in the forming cavity by the screw.

[0005] Furthermore, a recessed molding groove is formed on the surface of the positioning block near the molding cavity. The molding groove forms part of the molding cavity and is used to form a side surface of the rubber part. The nut is embedded in the side surface of the rubber part formed by the molding groove.

[0006] Furthermore, the end of the screw does not protrude from the surface of the nut.

[0007] Further, the positioning cavity is disposed through the middle mold. Upper and lower inclined surfaces are respectively formed at the upper and lower corners of the side of the positioning block away from the molding cavity. The upper mold is provided with an upper inclined surface convex block that cooperates with the upper inclined surface, and the lower mold is provided with a lower inclined surface convex block that cooperates with the lower inclined surface. When the mold is closed, the upper inclined surface convex block and the lower inclined surface convex block are assembled into the positioning cavity to position the positioning block.

[0008] Further, an assembly groove is provided on the lower surface of the positioning block, and an assembly convex block corresponding to the assembly groove is provided on the lower mold. The position of the positioning block in the positioning cavity is aligned through the cooperation of the assembly groove and the assembly convex block.

[0009] Further, the molding cavity includes an upper mold cavity, a middle mold cavity, and a lower mold cavity. The upper mold cavity is disposed on the upper mold and is used to form the upper surface of the rubber part. The lower mold cavity is disposed on the lower mold and is used to form the lower surface of the rubber part. The middle mold cavity is disposed through the middle mold and communicates the upper mold cavity and the lower mold cavity. The middle mold cavity cooperates with the positioning block to form the circumferential side surface of the rubber part.

[0010] Further, two symmetric molding cavities are formed inside the upper mold, the middle mold, and the lower mold. A positioning cavity is provided between the two molding cavities. Two positioning blocks corresponding to the molding cavities are detachably assembled in the positioning cavity. The two positioning blocks are symmetrically arranged and separate the two molding cavities and the positioning cavity.

[0011] Further, a plurality of corresponding mold closing positioning holes are provided at the edges of the upper mold, the middle mold, and the lower mold. The positioning and assembly of the upper mold, the middle mold, and the lower mold are achieved through the guide posts assembled in the mold closing positioning holes.

[0012] Further, an upper demolding groove is provided at the edge of the lower surface of the upper mold, and a lower demolding groove is provided at the edge of the upper surface of the lower mold.

[0013] Further, the rubber part formed by mold processing is in a "convex" shape structure. The nut is embedded on the surface of the protruding part of the rubber part. A part bolt hole is formed on the upper surface of the rubber part, and a part bolt for installing the rubber part is embedded on the lower surface of the rubber part. The molding cavity is in a "convex" shape structure, and the positioning block is in a "concave" shape structure. The concave part of the positioning block is connected to the protruding part of the molding cavity.

[0014] Further, the upper mold is provided with a molding stud for forming the part bolt hole, and the lower mold is provided with a threaded hole. The part bolt for installing the rubber part is connected in the threaded hole.

[0015] The beneficial effects of this utility model are as follows: The rubber mold of this utility model uses a positioning block to install the nut, thereby achieving the suspended positioning of the nut and ensuring the positioning accuracy of the nut. The nut is connected by a screw, which prevents the nut from shifting when the rubber material is injected into the mold, ensuring the molding accuracy of the rubber product. The positioning block is detachably set in the positioning cavity, which facilitates the demolding of the positioning block and the rubber product together after the rubber product is vulcanized and molded, and the removal of the positioning block and the screw connected to the nut. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the rubber mold structure in Example 1;

[0017] Figure 2 This is a schematic diagram of the upper mold structure in Example 1;

[0018] Figure 3 This is a schematic diagram of the mold structure in Example 1;

[0019] Figure 4 This is a schematic diagram of the lower mold structure in Example 1;

[0020] Figure 5 This is an assembly drawing of the mold, rubber parts, and upper surface of the positioning block in Example 1;

[0021] Figure 6 This is an assembly drawing of the mold, rubber parts, and lower surface of the positioning block in Example 1;

[0022] Figure 7 This is a schematic diagram of the positioning block structure;

[0023] Figure 8 This is a schematic diagram of the rubber part structure;

[0024] Figure 9 This is a schematic diagram of the rubber mold structure in Example 2;

[0025] In the diagram: 1. Upper mold, 101. Upper inclined surface protrusion, 102. Upper mold release groove, 2. Middle mold, 3. Lower mold, 301. Lower inclined surface protrusion, 302. Assembly protrusion, 303. Lower mold release groove, 4. Rubber part, 401. Nut, 402. Part bolt hole, 403. Part bolt, 5. Positioning block, 501. Threaded through hole, 502. Assembly groove, 503. Forming groove, 504. Upper inclined surface, 505. Lower inclined surface, 6. Forming mold cavity, 601. Upper mold cavity, 6011. Forming stud, 602. Middle mold cavity, 603. Lower mold cavity, 6031. Threaded hole, 7. Positioning cavity, 8. Mold closing positioning hole. Detailed Implementation

[0026] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe the specific embodiments of the present utility model in detail with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0027] Embodiment 1

[0028] See the attached Figure 1-6 , a rubber mold for positioning a suspended nut, which is used to process a rubber part in a motorboat docking device. The rubber part has a "convex" shape structure. A nut 401 is embedded at the center position of the surface of the protruding part of the rubber part 4. A part bolt hole 402 is formed on the upper surface of the rubber part 7. Two part bolts 403 for installing the rubber part are embedded on the lower surface of the rubber part 4. The mold includes an upper mold 1, a middle mold 2, a lower mold, and a positioning block 5. An inner forming cavity 6 and a positioning cavity 7 are formed inside the upper mold 1, the middle mold 2, and the lower mold 3. The forming cavity 6 is used to form the rubber part 4. The positioning cavity ⑦ is connected to the forming cavity 6. The positioning block 5 is detachably arranged in the positioning cavity 7. The positioning block 5 separates the forming cavity 6 and the positioning cavity 7. The surface of the positioning block ⑤ that is connected to the forming cavity 6 constitutes the side wall of the forming cavity. A through threaded through hole 501 is provided on the positioning block 5. A screw rod is connected in the threaded through hole 501. The screw rod passes through the positioning block <5> and extends into the forming cavity 6. The nut 401 is connected to the screw rod. The nut 401 is fixed at a predetermined position in the forming cavity 6 through the screw rod. The end of the screw rod does not protrude from the surface of the nut 401. This avoids forming holes in the rubber part 4 and affecting the part quality.

[0029] Furthermore, an inwardly concave forming groove 503 is formed on the surface of the positioning block 5 close to the forming cavity 6. The forming groove 503 constitutes a part of the forming cavity and is used to form a side surface of the rubber part. The nut 401 is embedded on the side surface of the rubber part formed by the forming groove. The forming cavity 6 has a "convex" shape structure. The positioning block 5 has a "concave" shape structure. The forming groove 503 is the inwardly concave part of the positioning block. The inwardly concave part of the positioning block 5 is connected to the protruding part of the forming cavity 6. The rubber material injected into the forming groove forms a part of the protruding part of the rubber part.

[0030] Furthermore, two symmetric forming cavities 6 are formed inside the upper mold 1, the middle mold, and the lower mold 3. A positioning cavity 7 is provided between the two forming cavities 6. Two positioning blocks 5 corresponding to the forming cavities 6 are detachably assembled in the positioning cavity 7. The two positioning blocks 5 are symmetrically arranged and separate the two forming cavities 6 and the positioning cavity 7.

[0031] Based on the above technical solution, each mold has two molding cavities 6, which can mold two rubber parts 4 at one time, thus improving efficiency. There is a gap between the two positioning blocks 5, which facilitates the installation and removal of the positioning blocks. The end of the screw away from the nut 401 can protrude from the positioning block 5, which facilitates the screw to be turned and the positioning block 5 to be removed.

[0032] In another embodiment, the end of the screw away from the nut 401 can also be located inside the positioning block 5. By screwing the positioning block 5, the positioning block 5 can be separated from the rubber part 4, and then the screw can be unscrewed. In this scheme, the two positioning blocks 5 can be arranged back to back adjacent to each other.

[0033] Furthermore, the positioning cavity 7 is disposed through the middle mold 2. The upper and lower corners of the positioning block 5 on the side away from the forming mold cavity 6 are respectively provided with an upper inclined surface 504 and a lower inclined surface 505. The upper mold 1 is provided with an upper inclined surface protrusion 101 that mates with the upper inclined surface 504, and the lower mold 3 is provided with a lower inclined surface protrusion 301 that mates with the lower inclined surface 505. When the mold is closed, the upper inclined surface protrusion 101 and the lower inclined surface protrusion 301 are assembled into the positioning cavity 7 to position the positioning block 5, ensuring that the positioning block 5 is close to the forming mold cavity 6. The lower surface of the positioning block 5 is provided with an assembly groove 502, and the lower mold is provided with an assembly protrusion 302 corresponding to the assembly groove 502. The position of the positioning block 5 within the positioning cavity 7 is aligned through the engagement of the assembly groove 502 and the assembly protrusion 302.

[0034] Further, the molding cavity includes an upper mold cavity 601, a middle mold cavity 602, and a lower mold cavity 603. The upper mold cavity 601 is disposed on the upper mold 1 and is used to form the upper surface of the rubber part 4. The lower mold cavity 603 is disposed on the lower mold 3 and is used to form the lower surface of the rubber part. The middle mold cavity 602 is disposed through the middle mold 2, connecting the upper mold cavity 601 and the lower mold cavity 602. The middle mold cavity 602 cooperates with the positioning block 5 to form the peripheral surface of the rubber part 4. The upper mold cavity 601 is provided with a molding stud 6011 for forming the bolt hole 402 of the part. The lower mold cavity 603 is provided with two threaded holes 6031. The bolts 403 for installing the rubber part are connected in the threaded holes 6031. The two bolts 403 are pre-set in the molding cavity 6 through the threaded holes 6031. After the rubber material is injected and vulcanized, part of the bolts 406 in the threaded holes 6031 of the lower mold are exposed outside the rubber part.

[0035] Furthermore, the upper mold 1, the middle mold 2, and the lower mold 3 are provided with several corresponding mold closing positioning holes 8 at their edges, and the upper mold 1, the middle mold 2, and the lower mold 3 are positioned and assembled through the guide pillars assembled in the mold closing positioning holes 8.

[0036] Furthermore, the lower surface of the upper mold 1 is provided with an upper mold release groove 102 at the edge, and the upper surface of the lower mold 3 is provided with a lower mold release groove 303 at the edge.

[0037] Instructions for use: Place the middle mold 2 above the lower mold 3. Screw the part bolts 403 into the two threaded holes 6031 of each lower mold cavity 603. Install the screw and nut 401 onto the positioning block. Assemble the positioning block into the positioning cavity. Inject rubber material. Place the upper mold 1 above the middle mold 2 and press it down. The upper mold 1, middle mold 3, and lower mold 3 are positioned and assembled by guide pillars. The upper inclined protrusion 101 and the lower inclined protrusion 301 make the positioning block 5 press against the edge of the molding cavity 6, thus closing the molding cavity 6. After the rubber vulcanizes and is molded, open the upper mold 1 and remove the rubber part 4 and the positioning block 5 as a whole. Tighten the screw or positioning block 5 to separate the screw from the nut 401.

[0038] Example 2

[0039] The technical solution of Embodiment 2 is basically the same as that of Embodiment 1. The difference is that in Embodiment 2, a molding cavity 6 and a positioning cavity 7 are formed in the upper mold 1, middle mold 2 and lower mold 3. When the positioning block 5 is installed in the positioning cavity 7, there is a gap between the side surface of the positioning block 5 away from the nut 401 and the side wall of the positioning cavity, which facilitates the insertion and removal of the positioning block.

[0040] In another embodiment, the side surface of the positioning block away from the nut is in contact with the side wall of the positioning cavity, and the end of the screw away from the nut 401 is located inside the positioning block 5. By screwing the positioning block 5, the positioning block 5 is separated from the rubber part 4, and then the screw is unscrewed.

[0041] It should be noted that the parts of this utility model not described in detail are existing technologies.

[0042] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0046] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0047] The above-listed embodiments are merely preferred embodiments of this utility model. Obviously, this utility model is not limited to the above embodiments and many variations are possible. All variations that can be directly derived or conceived by those skilled in the art from the disclosure of this utility model should be considered within the protection scope of this utility model.

Claims

1. A rubber mold for positioning a suspended nut, characterized in that: It includes an upper mold, a middle mold, a lower mold and a positioning block. Forming cavities and positioning cavities are formed inside the upper mold, the middle mold and the lower mold. The forming cavity is used to form rubber parts, and the positioning cavity is communicated with the forming cavity. The positioning block is detachably arranged in the positioning cavity. The positioning block separates the forming cavity and the positioning cavity. The surface of the positioning block that is connected to the forming cavity constitutes the side wall of the forming cavity. A through threaded through hole is provided on the positioning block, and a screw rod is connected in the threaded through hole. The screw rod passes through the positioning block and extends into the forming cavity. The nut is connected to the screw rod and is fixed in the forming cavity through the screw rod.

2. A rubber mold for positioning a suspended nut according to claim 1, characterized in that: An inward concave forming groove is formed on the surface of the positioning block close to the forming cavity. The forming groove constitutes a part of the forming cavity and is used to form a side surface of the rubber part. The nut is embedded in the side surface of the rubber part formed by the forming groove.

3. A rubber mold for positioning a suspended nut according to claim 1, characterized in that: The end of the screw rod does not protrude from the surface of the nut.

4. A rubber mold for positioning a suspended nut according to claim 1, characterized in that: The positioning cavity is formed through the middle mold. Upper inclined surfaces and lower inclined surfaces are respectively formed at the upper and lower corners of the side of the positioning block away from the forming cavity. The upper mold is provided with an upper inclined surface convex block that cooperates with the upper inclined surface, and the lower mold is provided with a lower inclined surface convex block that cooperates with the lower inclined surface. When the mold is closed, the upper inclined surface convex block and the lower inclined surface convex block are assembled into the positioning cavity to position the positioning block. An assembly groove is provided on the lower surface of the positioning block, and an assembly convex block corresponding to the assembly groove is provided on the lower mold. The position of the positioning block in the positioning cavity is aligned through the cooperation of the assembly groove and the assembly convex block.

5. A rubber mold for positioning a suspended nut according to claim 1, characterized in that: The forming cavity includes an upper mold cavity, a middle mold cavity and a lower mold cavity. The upper mold cavity is arranged on the upper mold and is used to form the upper surface of the rubber part. The lower mold cavity is arranged on the lower mold and is used to form the lower surface of the rubber part. The middle mold cavity is formed through the middle mold and communicates the upper mold cavity and the lower mold cavity. The middle mold cavity cooperates with the positioning block to form the peripheral side surface of the rubber part.

6. A rubber mold for positioning a suspended nut according to claim 1, characterized in that: Two symmetric forming cavities are formed inside the upper mold, the middle mold and the lower mold. A positioning cavity is arranged between the two forming cavities. Two positioning blocks corresponding to the forming cavities are detachably assembled in the positioning cavity. The two positioning blocks are symmetrically arranged and separate the two forming cavities and the positioning cavity.

7. A rubber mold for positioning a suspended nut according to claim 1, characterized in that: A number of corresponding mold closing positioning holes are provided at the edges of the upper mold, the middle mold and the lower mold. The positioning and assembly of the upper mold, the middle mold and the lower mold are realized through the guide posts assembled in the mold closing positioning holes.

8. A rubber mold for positioning a suspended nut according to claim 1, characterized in that: An upper mold lifting groove is provided at the edge of the lower surface of the upper mold, and a lower mold lifting groove is provided at the edge of the upper surface of the lower mold.

9. A rubber mold for positioning a suspended nut according to any one of claims 1-8, characterized in that: The rubber part formed by mold processing is in a "convex" shape structure. The nut is embedded on the surface of the protruding part of the rubber part. A part bolt hole is formed on the upper surface of the rubber part, and a part bolt for installing the rubber part is embedded on the lower surface of the rubber part. The forming cavity is in a "convex" shape structure, and the positioning block is in a "concave" shape structure. The concave part of the positioning block is connected to the protruding part of the forming cavity.

10. A rubber mold for positioning a suspended nut according to claim 9, characterized in that: The upper mold is provided with a forming stud for forming the part bolt hole, and the lower mold is provided with a threaded hole. The part bolt for installing the rubber part is connected in the threaded hole.

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