Multi-specification production mold for rubber thread plug of shot blasting machine

Abstract

The utility model discloses a multi-specification production die for a rubber thread plug of a shot blasting machine, which comprises a lower forming die, an upper forming die and a connecting plate, the upper forming die is matched with the lower forming die, and the connecting plate is connected with the upper forming die in a sliding manner; a plurality of groups of plug handle cavities and plug head cavities are jointly formed between the upper forming die and the lower forming die, the plug handle cavities and the plug head cavities are sequentially connected end to end, and the specifications of the plug head cavities and the plug handle cavities in each group are different; an injection molding hole is formed in the position, corresponding to the outmost chock plug cavity, between the upper forming mold and the lower forming mold, the chock plug cavities and the chock handle cavities of different specifications are formed in the upper forming mold and the lower forming mold, then a rubber mixing solution is injected into the chock plug cavities and the chock handle cavities, and cutting-off work is automatically completed in the mold opening process. Integrated production of threaded rubber plugs of various specifications is achieved, when the demand quantity is small, the preparation efficiency is high, small-quantity-demand production of manufacturers is met, and the production cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of rubber part production, and specifically relates to a multi - specification production mold for rubber threaded plugs of shot blasting machines. Background Art

[0002] A shot blasting machine is a device that uses abrasive media to polish the surface of products. During the processing, sandblasting is usually used as the abrasive media. Therefore, in order to protect the threaded holes of the products to be processed from the influence of sandblasting, threaded plugs of appropriate specifications are set inside the threaded holes of the products for protection.

[0003] In the prior art, injection molding or compression molding processes are usually used to manufacture rubber plugs. Among them, when using the injection molding process, first, the rubber compound after mixing is added into an injection molding machine, and auxiliary raw materials such as plasticizers are added. Then, under the action of heating, melting, and pressure of the injection molding machine, the rubber compound is injected into the mold after clamping, so that the rubber compound fills the cavity inside the mold. After that, the mold is placed in a cooling device to quickly cool and solidify the rubber. Finally, the formed rubber plug is demolded.

[0004] However, in the prior art, the molds are usually of a unified standard. Different molds can only process rubber plugs of one specification during production, and it is impossible to use one mold to produce rubber plugs of different specifications at the same time. For mechanical processing manufacturers with a small demand, they still need to find processors for customized production, which has certain limitations. Summary of the Utility Model

[0005] To solve the technical problem in the prior art that different molds can only process rubber plugs of one specification during production and it is impossible to use one mold to produce rubber plugs of different specifications at the same time, the utility model provides a multi - specification production mold for rubber threaded plugs of shot blasting machines.

[0006] The purpose of the utility model can be realized through the following technical solutions:

[0007] A multi - specification production mold for rubber threaded plugs of shot blasting machines includes a forming lower mold, a forming upper mold, and a connecting plate. The forming upper mold and the forming lower mold fit with each other, and the connecting plate is slidably connected to the forming upper mold;

[0008] A plurality of sets of plug - handle cavities and plug - head cavities are jointly opened between the forming upper mold and the forming lower mold. The plug - handle cavities and the plug - head cavities are connected in sequence at the head and tail. The specifications of each set of plug - head cavities and plug - handle cavities are different;

[0009] An injection hole is opened between the forming upper mold and the forming lower mold at the position corresponding to the outermost plug - head cavity. The injection hole corresponds to each set of plug - handle cavities with different specifications one by one;

[0010] Multiple groups of cutting knives are fixedly connected to the lower surface of the connecting plate; the forming upper die is provided with cutouts corresponding to the cutting knives one by one for placing the cutting knives in the corresponding plug cavities.

[0011] Furthermore, the upper part of the cutting knife is rectangular and connected to the connecting plate, and the lower part is semicircular and provided with a circular hole. The aperture of the circular hole is the same as the aperture of the corresponding plug handle cavity, and the lower diameter of the connecting plate is the same as the diameter of the plug head cavity.

[0012] Furthermore, grooves are provided at the four corners of the forming upper die; springs are arranged inside the grooves.

[0013] Furthermore, an upper fixing block is fixedly connected to the upper end of the spring; a lower fixing block is fixedly connected to the lower end;

[0014] The center of the lower surface of the upper fixing block is fixedly connected with a plunger; the center of the upper surface of the lower fixing block is fixedly connected with an annular vertical plate; the plunger is slidably connected inside the annular vertical plate and fits with each other.

[0015] Furthermore, threaded rods are fixedly connected to the upper surface of the upper fixing block and the lower surface of the lower fixing block. The spring is fixedly connected to the forming upper die and the connecting plate respectively through the cooperation of the threaded rod and the nut.

[0016] Furthermore, limiting convex blocks are fixedly connected to both sides of the forming upper die, and limiting grooves are provided on both sides of the forming lower die. The limiting grooves and the limiting convex blocks fit with each other.

[0017] Furthermore, handles are fixedly connected to both ends of the forming upper die and the forming lower die, and the injection hole is located in the middle between the handles at the same end.

[0018] Advantages of the present utility model:

[0019] Through the plug head cavities and plug handle cavities with different specifications provided in the forming upper die and the forming lower die of the present utility model, then injecting the rubber mixing solution into it, and automatically completing the cutting work during the mold opening process, realizing the integrated production of various specifications of threaded rubber plugs. When the demand is small, the preparation efficiency is high, adapting to the small demand production of manufacturers, and the production cost is reduced. Description of the drawings

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0022] Figure 2 This is the first sectional view of the present utility model;

[0023] Figure 3 This is the second sectional view of the present utility model;

[0024] Figure 4 This is the exploded view of the present utility model;

[0025] Figure 5 This is the structural schematic diagram of the spring in the present utility model;

[0026] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0027] 1. Forming lower die; 101. Plug handle cavity; 102. Plug head cavity; 103. Injection hole; 2. Forming upper die; 201. Notch; 202. Groove body; 203. Limiting convex block; 204. Limiting groove; 3. Connecting plate; 301. Cutting knife; 4. Spring; 401. Upper fixing block; 402. Lower fixing block; 403. Annular vertical plate; 404. Plunger; 405. Threaded rod; 5. Handle. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the attached drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] Please refer to Figure 1 - Figure 4 As shown in the figure, a multi - specification production mold for a shot - blasting machine rubber screw plug includes a forming lower die 1, a forming upper die 2, and a connecting plate 3. The forming upper die 2 and the forming lower die 1 fit with each other, and the connecting plate 3 is slidably connected to the forming upper die 2;

[0030] A plurality of groups of plug handle cavities 101 and plug head cavities 102 are jointly formed between the forming upper die 2 and the forming lower die 1. The plug handle cavities 101 and the plug head cavities 102 are connected end to end in sequence, and the specifications of each group of plug head cavities 102 and plug handle cavities 101 are different;

[0031] An injection hole 103 is formed between the forming upper die 2 and the forming lower die 1 at the position corresponding to the outermost plug head cavity 102, and the injection hole 103 corresponds to each group of plug handle cavities 101 with different specifications one by one;

[0032] Please refer to again Figure 3 - Figure 4As shown, multiple groups of cutting knives 301 are fixedly connected to the lower surface of the connecting plate 3. The upper part of the cutting knife 301 is rectangular and connected to the connecting plate 3, and the lower part is semicircular and provided with a circular hole. The aperture of the circular hole is the same as the aperture of the corresponding plug handle cavity 101. The lower diameter of the connecting plate 3 is the same as the diameter of the plug head cavity 102. The forming upper die 2 is provided with notches 201 corresponding to the cutting knives 301 one by one for placing the cutting knives 301 in the corresponding plug head cavities 102.

[0033] Please refer to again Figure 2 and Figure 5 As shown, grooves 202 are provided at the four corners of the forming upper die 2; springs 4 are arranged inside the grooves 202.

[0034] The upper end of the spring 4 is fixedly connected with an upper fixing block 401; the lower end is fixedly connected with a lower fixing block 402; the center of the lower surface of the upper fixing block 401 is fixedly connected with a plunger 404; the center of the upper surface of the lower fixing block 402 is fixedly connected with an annular vertical plate 403; the plunger 404 is slidably connected inside the annular vertical plate 403 and fits with each other.

[0035] Threaded rods 405 are fixedly connected to the upper surface of the upper fixing block 401 and the lower surface of the lower fixing block 402. The spring 4 is fixedly connected to the forming upper die 2 and the connecting plate 3 respectively through the cooperation of the threaded rods 405 and nuts.

[0036] Through the cooperation of the upper fixing block 401, the lower fixing block 402, the threaded rods 405 and the nuts, the quick fixing and disassembly between the forming upper die 2 and the connecting plate 3 can be realized, and the maintenance is simple and convenient.

[0037] Please refer to again Figure 4 As shown, limit bumps 203 are fixedly connected to both sides of the forming upper die 2, and limit grooves 204 are provided on both sides of the forming lower die 1. The limit grooves 204 fit with the limit bumps 203;

[0038] Handles 5 are fixedly connected to both ends of the forming upper die 2 and the forming lower die 1.

[0039] In specific use, first, the upper forming die 2 and the lower forming die 1 are closed using the handle 5, so that the limit bump 203 is inserted into the corresponding limit groove 204, aligning the upper forming die 2 and the lower forming die 1 with each other. After transferring them into the injection molding machine, the injection molding machine is used to press the upper forming die 2, the lower forming die 1, and the connecting plate 3 tightly to keep them in a sealed and fastened state. Then, the vulcanized rubber solution is injected into the plug head cavity 102 and the plug handle cavity 101 inside the upper forming die 2 and the lower forming die 1 through the injection hole 103 of the injection molding machine. After completion, it is cooled and formed (water cooling can be used). Subsequently, the force applied to the connecting plate 3 is released. In addition to the spring 4 applying a force to the connecting plate 3 to move it away from the upper forming die 2, the plunger 404 forms an air cavity due to the seal with the annular vertical plate 403 and also applies a force to the connecting plate 3 to move it away from the upper forming die 2, causing the connecting plate 3 to drive the blade to leave the inside of the plug head cavity 102, and then cutting the formed rubber thread plug. Finally, the upper forming die 2 and the lower forming die 1 are opened again using the handle 5. After demolding, the operation can be carried out again. Through the different specifications of plug head cavities 102 and plug handle cavities 101 provided in the upper forming die 2 and the lower forming die 1, the vulcanized rubber solution is injected into them, and the cutting work is automatically completed during the mold opening process, realizing the integrated production of various specifications of threaded rubber plugs. When the demand is small, the preparation efficiency is high, meeting the small-demand production of manufacturers and reducing the production cost.

[0040] In the description of the specification, the description referring to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0041] The above content is only an example and explanation of the structure of the present invention. Those skilled in the art of this technology can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, as long as they do not deviate from the structure of the present invention or exceed the scope defined by this claim book, they should fall within the protection scope of the present invention.

Claims

1. A multi-specification production mold for rubber thread plugs of shot blasting machines, characterized by: It comprises a molding lower mold (1), a molding upper mold (2) and a connecting plate (3), wherein the molding upper mold (2) and the molding lower mold (1) fit each other, and the connecting plate (3) and the molding upper mold (2) are slidably connected; A plurality of groups of plug handle cavities (101) and plug head cavities (102) are provided between the upper molding die (2) and the lower molding die (1), the plug handle cavities (101) and the plug head cavities (102) are connected end to end in sequence, and the specifications of each group of the plug head cavities (102) and the plug handle cavities (101) are different; An injection hole (103) is provided between the upper molding die (2) and the lower molding die (1) at a position corresponding to the outermost plug head cavity (102), and the injection hole (103) corresponds one-to-one to each group of plug handle cavities (101) of different specifications; A plurality of groups of cutters (301) are fixedly connected to the lower surface of the connecting plate (3); and the upper forming die (2) is provided with cutouts (201) corresponding to the cutters (301) one by one, for placing the cutters (301) in corresponding plug cavities (102).

2. The multi-specification production mold for rubber threaded plugs for shot blasting machines according to claim 1, characterized in that: The upper part of the cutter (301) is rectangular and connected to the connecting plate (3), and the lower part is semicircular and has a circular hole, the diameter of which is consistent with the diameter of the corresponding plug handle cavity (101), and the diameter of the lower part of the connecting plate (3) is consistent with the diameter of the plug head cavity (102).

3. The multi-specification production mold for rubber threaded plugs for shot blasting machines according to claim 1 is characterized in that: Grooves (202) are provided at the four corners of the upper molding die (2); springs (4) are provided inside the grooves (202).

4. The multi-specification production mold for rubber threaded plugs for shot blasting machines according to claim 3 is characterized by: The upper end of the spring (4) is fixedly connected to an upper fixing block (401); the lower end is fixedly connected to a lower fixing block (402); A plunger (404) is fixedly connected to the center of the lower surface of the upper fixed block (401); an annular vertical plate (403) is fixedly connected to the center of the upper surface of the lower fixed block (402); and the plunger (404) is slidably connected inside the annular vertical plate (403) and fits with each other.

5. The multi-specification production mold for rubber threaded plugs for shot blasting machines according to claim 4, characterized in that: The upper surface of the upper fixing block (401) and the lower surface of the lower fixing block (402) are both fixedly connected with threaded rods (405), and the spring (4) is fixedly connected to the upper forming die (2) and the connecting plate (3) respectively through the cooperation of the threaded rods (405) and the nuts.

6. The multi-specification production mold for rubber threaded plugs for shot blasting machines according to claim 1, characterized in that: The two side edges of the upper molding die (2) are fixedly connected to limiting protrusions (203), and the two side edges of the lower molding die (1) are provided with limiting grooves (204), and the limiting grooves (204) and the limiting protrusions (203) are mutually matched.

7. The multi-specification production mold for rubber threaded plugs for shot blasting machines according to claim 1, characterized in that: Both ends of the upper molding die (2) and the lower molding die (1) are fixedly connected with handles (5), and the injection hole (103) is located in the middle between the handles (5) at the same end.

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