Cloth clamping rubber diaphragm mold

Abstract

The utility model discloses a cloth clamping rubber diaphragm mould which comprises a mould group, the mould group comprises an upper mould and a lower mould, a plurality of groups of upper mould cores are arranged on the lower side of the upper mould, a plurality of groups of lower mould cores are arranged on the upper side of the lower mould, a middle plate is arranged below the upper mould, and a plurality of groups of buffer units are arranged on the lower side of the upper mould. And a plurality of groups of positioning units are further arranged in the mold group, and each positioning unit comprises a pre-guiding structure and a fine positioning structure. According to the cloth clamping rubber diaphragm mold provided by the utility model, the reject ratio of cloth clamping rubber diaphragm production is effectively reduced by changing and adjusting the design of an existing mold structure, meanwhile, the production efficiency is improved, and the durable service life of the rubber diaphragm is also ensured.

Description

Technical Field

[0001] The utility model relates to a mould, in particular to a cloth-inserted rubber diaphragm mould. Background Art

[0002] Fabric-reinforced rubber diaphragm is a common industrial material, usually used in applications such as sealing, waterproofing and earthquake resistance. It consists of a rubber layer and a cloth layer, which are formed into a composite material by pressing the two together. The main features of the fabric-reinforced rubber diaphragm include wear resistance, corrosion resistance, waterproofness and high temperature resistance. It can provide good sealing effects under various environmental conditions and has certain earthquake resistance. Fabric-reinforced rubber diaphragm is widely used in construction, automobiles, ships, chemicals and other fields. It is often used as pipeline interfaces, valve seals, mechanical equipment seals and other parts to ensure the normal operation and safety of the system.

[0003] The production of cloth-reinforced rubber diaphragms usually requires the use of molds. The mold for the production of cloth-reinforced rubber diaphragms usually consists of two parts, namely the upper mold and the lower mold. The upper mold and the lower mold can be interlocked with each other through the convex and concave structure so that the desired shape and size can be formed when the cloth-reinforced rubber diaphragm is pressed in the mold. In the production of general cloth-reinforced rubber diaphragms, a suitable mold is selected according to the product design requirements. Then prepare the rubber mixture, mix the rubber and other additives evenly according to the formula requirements, and evenly coat the rubber mixture on the pre-prepared base fabric. Then put the rubber-coated base fabric into the mold. Put the mold into a vulcanizer or pressing equipment and apply appropriate pressure and temperature. After the vulcanization process is completed, remove the mold and cool it for a period of time to ensure the stability of the cloth-reinforced rubber diaphragm. Finally, remove the cloth-reinforced rubber diaphragm from the mold and carry out necessary inspections and quality control to ensure that the product meets the requirements.

[0004] However, rubber diaphragms produced by existing molds are prone to various defects, such as product burning, poor exhaust, uneven position of the base cloth in the rubber, uneven thickness of the diaphragm, etc., with a high scrap rate, poor production operation convenience and relatively low production efficiency, which also affects the durability of the rubber diaphragm.

[0005] Therefore, the above problems in the prior art need to be improved urgently. Utility Model Content

[0006] In view of the above-mentioned problems existing in the prior art, the purpose of the utility model is to provide a cloth-inserted rubber diaphragm mold, which can effectively reduce the defective rate of cloth-inserted rubber diaphragm production by designing and changing the existing mold structure, while improving production efficiency and ensuring the durable service life of the rubber diaphragm.

[0007] In order to achieve the above-mentioned purpose, the utility model provides a cloth-reinforced rubber diaphragm mold, comprising a mold set. The mold set comprises an upper mold and a lower mold, wherein a plurality of upper mold cores are arranged at the lower side of the upper mold, a plurality of lower mold cores are arranged at the upper side of the lower mold, a middle plate is arranged below the upper mold, a plurality of buffer units are arranged at the lower side of the upper mold, and a plurality of positioning units are arranged in the mold set, wherein the positioning units comprise a pre-guiding structure and a precision positioning structure.

[0008] Preferably, the buffer unit includes a support column, which is arranged on the upper side of the middle plate, the lower end of the support column passes through the middle plate and extends to the lower side of the middle plate, the upper end of the support column is provided with an upper spring, the lower end of the support column is provided with a lower spring, and an axial retaining ring is provided on the outer side of the support column.

[0009] Preferably, an upper spring seat is provided at the upper end of the upper spring, and the upper end of the upper spring seat is fixedly connected to the upper mold; a lower spring seat is provided at the lower end of the lower spring, and the lower end of the lower spring seat is fixedly connected to the upper side of the lower mold; the elastic coefficient of the upper spring is greater than that of the lower spring.

[0010] Preferably, the pre-guiding structure is arranged in four groups, and the pre-guiding structure comprises a guide column and a guide sleeve, wherein the upper end of the guide column is fixedly connected to the lower side of the upper mold, and the lower end of the guide sleeve is fixedly connected to the upper side of the lower mold.

[0011] Preferably, the precision positioning structure is arranged in four groups, and the precision positioning structure comprises an upper mold positioning pin and a lower mold positioning pin, wherein the upper ends of the upper mold positioning pins are fixedly connected to the lower side of the upper mold, and the lower ends of the lower mold positioning pins are fixedly connected to the upper side of the lower mold.

[0012] Preferably, a plurality of groups of anti-error guide pins are arranged in the lower mold, the upper ends of the anti-error guide pins pass through the lower mold and the middle plate and extend to the upper side of the middle plate, and the upper mold is provided with guide pin holes at positions corresponding to the anti-error guide pins.

[0013] Preferably, a plurality of groups of upper limit blocks are arranged on the upper side of the middle plate, and a plurality of groups of lower limit blocks are arranged on the lower side of the middle plate. The upper limit blocks and the lower limit blocks are positioned relative to each other, the upper end of the upper limit block is fixedly connected to the lower side of the upper mold, and the lower end of the lower limit block is fixedly connected to the upper side of the lower mold.

[0014] Preferably, a plurality of middle plate locating pins are provided on the upper side of the middle plate, the lower ends of the middle plate locating pins penetrate the middle plate and extend to the lower side of the middle plate, the upper ends of the middle plate locating pins are provided with upper locating pin seats, the lower ends of the middle plate locating pins are provided with lower locating pin seats, and an axial retaining ring 2 is provided on the outer side of the middle plate locating pins, the upper end of the upper locating pin seat is fixedly connected to the lower side of the upper mold, and the lower end of the lower locating pin seat is fixedly connected to the upper side of the lower mold.

[0015] Compared with the prior art, the utility model provides a cloth-reinforced rubber diaphragm mold, which pre-forms the rubber by means of a middle plate in cooperation with an upper mold and a lower mold. The pre-forming of the rubber can ensure the uniformity of the position of the base cloth in the rubber, and effectively reduce defects such as wrinkles and deflection of the base cloth. By setting multiple groups of upper mold cores and multiple groups of lower mold cores, during vulcanization production operations, the occurrence of defects such as mold contamination and corrosion can be effectively reduced, and the input of rubber and base cloth and the removal of products can be simpler and more convenient, while improving the convenience of mold processing, manufacturing, maintenance and updating.

[0016] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0017] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0019] Figure 2 This is an exploded schematic diagram of the structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the oblique section of the structure of the utility model;

[0021] Figure 4 for Figure 3 The enlarged schematic diagram at A in the middle;

[0022] Figure 5 for Figure 3 The enlarged schematic diagram of point B in the middle;

[0023] Figure 6 for Figure 3 The enlarged schematic diagram at C in the middle;

[0024] Figure 7 It is a schematic cross-sectional view of the structure of the utility model;

[0025] Figure 8 for Figure 7 The enlarged schematic diagram at A in the middle;

[0026] Fig. 9 for Figure 7 Enlarged schematic diagram of point B in the middle.

[0027] Description of main reference numerals:

[0028] 1-mold set, 2-upper mold, 21-upper mold core, 3-lower mold, 31-lower mold core, 4-middle plate, 5-buffer unit, 6-positioning unit, 7-pre-guide structure, 71-guide column, 72-guide sleeve, 8-precision positioning structure, 81-upper mold positioning pin, 82-lower mold positioning pin, 9-support column, 91-axial retaining ring one, 10-upper spring, 11-lower spring, 12-upper spring seat, 13-lower spring seat, 14-anti-mistake guide pin, 15-guide pin hole, 16-upper limit block, 17-lower limit block, 18-middle plate positioning pin, 181-upper positioning pin seat, 182-lower positioning pin seat, 183-axial retaining ring two. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0030] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. "Include" or "comprise" and other similar words used in the present disclosure mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0031] In order to keep the following description of the embodiments of the present disclosure clear and concise, the present disclosure omits detailed descriptions of well-known functions and well-known components.

[0032] like Figure 1 to Figure 2As shown, the utility model provides a cloth-inserted rubber diaphragm mold, including a mold set 1. The mold set 1 includes an upper mold 2 and a lower mold 3, wherein multiple groups of upper mold cores 21 are arranged on the lower side of the upper mold 2, multiple groups of lower mold cores 31 are arranged on the upper side of the lower mold 3, a middle plate 4 is arranged below the upper mold 2, multiple groups of buffer units 5 are arranged on the lower side of the upper mold 2, and multiple groups of positioning units 6 are also arranged in the mold set 1, and the positioning units 6 include a pre-guide structure 7 and a precision positioning structure 8. Through the middle plate 4, the semi-finished rubber is first preformed for a short time, and then the middle plate 4 is removed, and then the base cloth is put in for vulcanization, so as to ensure the uniformity of the position of the base cloth in the rubber, and effectively reduce the occurrence of wrinkles, uneven cloth and other defects of the base cloth. Through the dispersed arrangement of multiple groups of upper mold cores 21 and multiple groups of lower mold cores 31, during the vulcanization production operation, the occurrence of defects such as mold contamination and corrosion can be effectively reduced, and the design of dispersing the common one-piece mold into multiple mold cores can make the input of rubber and base cloth and the removal of products simpler and more convenient, and the dispersed mold processing, manufacturing and maintenance are more convenient. Furthermore, in order to prevent the rubber surface from being burnt, Figure 2 and Figure 6 The buffer unit 5 includes a support column 9, which is arranged on the upper side of the middle plate 4. The lower end of the support column 9 penetrates the middle plate 4 and extends to the lower side of the middle plate 4. The upper end of the support column 9 is provided with an upper spring 10, the lower end of the support column 9 is provided with a lower spring 11, and the outer side of the support column 9 is provided with an axial retaining ring 91. The upper end of the upper spring 10 is provided with an upper spring seat 12, the upper end of the upper spring seat 12 is fixedly connected to the upper mold 2, the lower end of the lower spring 11 is provided with a lower spring seat 13, the lower end of the lower spring seat 13 is fixedly connected to the upper side of the lower mold 3, and the elastic coefficient of the upper spring 10 is greater than that of the lower spring 11. By setting the buffer unit 5, the middle plate 4 can be prevented from being close to the upper mold 2 or the lower mold 3, and by setting the elastic coefficient of the upper spring 10 to be greater than that of the lower spring 11, the spring can play a supporting role when the rubber is put into the mold, which can ensure the process design of vacuuming the equipment first and then pressurizing the rubber, and effectively prevent the occurrence of poor exhaust.

[0033] In the production of diaphragms, it is usually necessary to use equipment to apply pressure to the upper and lower molds, which places great demands on the degree of fit between the upper and lower molds. Figures 2 to 4 The pre-guide structure 7 is provided with four groups, and the pre-guide structure 7 includes a guide post 71 and a guide sleeve 72. The upper end of the guide post 71 is fixedly connected to the lower side of the upper mold 2, and the lower end of the guide sleeve 72 is fixedly connected to the upper side of the lower mold 3. By setting the guide post 71 in conjunction with the guide sleeve 72, the guide structure pre-guides the mold roughly before the vulcanization mold is closed, effectively preventing the mold from being damaged by the mold closing misalignment. Further, as Figure 2 as well as Figures 7 and 8The precision positioning structure 8 is set to four groups, and the precision positioning structure 8 includes an upper mold positioning pin 81 and a lower mold positioning pin 82. The upper end of the upper mold positioning pin 81 is fixedly connected to the lower side of the upper mold 2, and the lower end of the lower mold positioning pin 82 is fixedly connected to the upper side of the lower mold 3. By setting the upper mold positioning pin 81 to cooperate with the lower mold positioning pin 82, the mold is further positioned on the basis of the pre-guide structure 7, making the positioning more stable and accurate, and effectively preventing the problem of uneven size and thickness of the rubber diaphragm caused by mold misalignment.

[0034] During processing, the device needs to frequently disassemble and assemble the middle plate 4, and the upper side of the middle plate 4 cooperates with the upper mold 2, and the lower side cooperates with the lower mold 3. Figures 7 to 9 , multiple groups of anti-error guide pins 14 can be arranged in the lower mold 3. The upper ends of the anti-error guide pins 14 penetrate the lower mold 3 and the middle plate 4 and extend to the upper side of the middle plate 4. The upper mold 2 is provided with guide pin holes 15 at positions corresponding to the anti-error guide pins 14. Multiple groups of upper limit blocks 16 are arranged on the upper side of the middle plate 4, and multiple groups of lower limit blocks 17 are arranged on the lower side of the middle plate 4. The upper limit blocks 16 and the lower limit blocks 17 are positioned opposite to each other. The upper end of the upper limit block 16 is fixedly connected to the lower side of the upper mold 2, and the lower end of the lower limit block 17 is fixedly connected to the upper side of the lower mold 3. By setting the upper limit block 16 and the lower limit block 17, the directionality of the middle plate 4 is clearer, which can effectively prevent the problem of the middle plate being placed upside down during the process of opening and closing the mold, and effectively prevent the mold from being crushed due to forgetting to put the middle plate in. In addition, in order to prevent mold misalignment, such as Figures 3 to 5 , multiple groups of middle plate locating pins 18 can be further provided on the upper side of the middle plate 4, the lower ends of the middle plate locating pins 18 penetrate the middle plate 4 and extend to the lower side of the middle plate 4, the upper ends of the middle plate locating pins 18 are provided with upper locating pin seats 181, the lower ends of the middle plate locating pins 18 are provided with lower locating pin seats 182, and the outer sides of the middle plate locating pins 18 are provided with axial retaining rings 183, the upper ends of the upper locating pin seats 181 are fixedly connected to the lower side of the upper mold 2, and the lower ends of the lower locating pin seats 182 are fixedly connected to the upper side of the lower mold 3. The middle plate locating pins 18 are engaged with the middle plate 4, and the upper locating pin seats 181 and the lower locating pin seats 182 are matched at both ends of the middle plate locating pins 18 to position the middle plate 4 and the mold set 1, and the protrusions provided on both sides of the middle plate locating pins 18 can also effectively protect the mold product surface and reduce damage and scratches.

[0035] like Figures 1 to 9 During production and processing, first put the semi-finished rubber on the rubber feeding plate, open the mold group 1, remove the middle plate 4, use the rubber feeding plate to put rubber on the middle plate 4 and the lower mold 3 respectively, put the middle plate 4 into the mold group 1, and perform rubber pre-forming and vulcanization. After a short period of pre-forming, open the mold and remove the middle plate 4, spray the release agent on the middle plate 4 and keep it warm, put the base cloth into the lower mold 3 product, and perform long-term vulcanization. After a certain period of heating and pressurization, the rubber-cloth diaphragm is vulcanized, and the mold group 1 is opened to take out the product.

[0036] Of course, the above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A cloth-reinforced rubber diaphragm mold, characterized in that: The invention comprises a mould group (1), wherein the mould group (1) comprises an upper mould (2) and a lower mould (3), wherein a plurality of groups of upper mould cores (21) are arranged on the lower side of the upper mould (2), and a plurality of groups of lower mould cores (31) are arranged on the upper side of the lower mould (3), a middle plate (4) is arranged below the upper mould (2), and a plurality of groups of buffer units (5) are arranged on the lower side of the upper mould (2), and a plurality of groups of positioning units (6) are also arranged in the mould group (1), and the positioning units (6) comprise a pre-guiding structure (7) and a precise positioning structure (8).

2. The cloth-reinforced rubber diaphragm mold according to claim 1, characterized in that: The buffer unit (5) comprises a support column (9), wherein the support column (9) is arranged on the upper side of the middle plate (4), the lower end of the support column (9) passes through the middle plate (4) and extends to the lower side of the middle plate (4), an upper spring (10) is arranged at the upper end of the support column (9), a lower spring (11) is arranged at the lower end of the support column (9), and an axial retaining ring (91) is arranged on the outer side of the support column (9).

3. The cloth-reinforced rubber diaphragm mold according to claim 2, characterized in that: An upper spring seat (12) is provided at the upper end of the upper spring (10), and the upper end of the upper spring seat (12) is fixedly connected to the upper mold (2). A lower spring seat (13) is provided at the lower end of the lower spring (11), and the lower end of the lower spring seat (13) is fixedly connected to the upper side of the lower mold (3). The elastic coefficient of the upper spring (10) is greater than that of the lower spring (11).

4. The cloth-reinforced rubber diaphragm mold according to claim 1, characterized in that: The pre-guiding structure (7) is arranged in four groups, and the pre-guiding structure (7) comprises a guide column (71) and a guide sleeve (72), wherein the upper end of the guide column (71) is fixedly connected to the lower side of the upper mold (2), and the lower end of the guide sleeve (72) is fixedly connected to the upper side of the lower mold (3).

5. The cloth-reinforced rubber diaphragm mold according to claim 1, characterized in that: The precise positioning structure (8) is arranged in four groups, and the precise positioning structure (8) comprises an upper mold positioning pin (81) and a lower mold positioning pin (82), wherein the upper end of the upper mold positioning pin (81) is fixedly connected to the lower side of the upper mold (2), and the lower end of the lower mold positioning pin (82) is fixedly connected to the upper side of the lower mold (3).

6. The cloth-reinforced rubber diaphragm mold according to claim 1, characterized in that: A plurality of groups of anti-error guide pins (14) are arranged in the lower mold (3), and the upper ends of the anti-error guide pins (14) penetrate the lower mold (3) and the middle plate (4) and extend to the upper side of the middle plate (4), and the upper mold (2) is provided with guide pin holes (15) at positions corresponding to the anti-error guide pins (14).

7. The cloth-reinforced rubber diaphragm mold according to claim 1, characterized in that: A plurality of groups of upper limit blocks (16) are arranged on the upper side of the middle plate (4), and a plurality of groups of lower limit blocks (17) are arranged on the lower side of the middle plate (4). The upper limit blocks (16) and the lower limit blocks (17) are positioned relative to each other. The upper ends of the upper limit blocks (16) are fixedly connected to the lower side of the upper mold (2), and the lower ends of the lower limit blocks (17) are fixedly connected to the upper side of the lower mold (3).

8. The cloth-reinforced rubber diaphragm mold according to claim 1, characterized in that: A plurality of middle plate locating pins (18) are also provided on the upper side of the middle plate (4), the lower ends of the middle plate locating pins (18) penetrate the middle plate (4) and extend to the lower side of the middle plate (4), the upper ends of the middle plate locating pins (18) are provided with upper locating pin seats (181), the lower ends of the middle plate locating pins (18) are provided with lower locating pin seats (182), and the outer sides of the middle plate locating pins (18) are provided with axial retaining rings (183), the upper ends of the upper locating pin seats (181) are fixedly connected to the lower side of the upper mold (2), and the lower ends of the lower locating pin seats (182) are fixedly connected to the upper side of the lower mold (3).

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