Spray gun shell rubber coating mold

Abstract

The utility model discloses a spray gun shell rubber coating mold which comprises an upper mold, a lower mold is buckled below the upper mold, a section mold is assembled in the lower mold, the bottom surface of the lower mold is fixedly connected with a base, and plastic enters a rubber coating cavity through an injection molding opening, a material channel and a feeding hole in sequence. Meanwhile, the cooling water channel and an external water source are connected together, the lower die plate body is cooled, rubber coating operation on a handle of the spray gun machine shell is completed, the upper die is opened, the two extrusion nails are pulled, the swage die is detached, and the spray gun machine shell coated with the rubber can be taken out. According to the utility model, the independent section mold is utilized, so that the mold is more convenient to align, assemble and demold after rubber coating.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to a rubber coating mold for a spray gun housing. Background Technology

[0002] When producing spray gun housings in a factory, the handle is often coated with rubber for a more comfortable grip. This coating process requires the use of molds. Current spray gun housing coating molds generally consist of an upper mold and a lower mold. However, this simple structure of the coating mold can lead to difficulties in demolding. To address this issue, a new spray gun housing coating mold is proposed. Utility Model Content

[0003] The purpose of this utility model is to provide a rubber coating mold for a spray gun housing to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a spray gun housing coating mold, including an upper mold, a lower mold fastened to the lower part of the upper mold, a mold die assembled inside the lower mold, and a base fixedly connected to the bottom surface of the lower mold.

[0005] Preferably, the upper mold includes an upper mold plate, with positioning pins fixedly connected to the four corners of the upper mold plate, an injection port fixedly connected to the middle of the upper mold plate, and an upper template fixedly connected to the lower end of the upper mold plate.

[0006] Preferably, the positioning pin includes a pin bar, and the outer arm of the pin bar is uniformly provided with annular grooves.

[0007] Preferably, the upper template includes an upper template body, the upper surface of the upper template body is provided with a material channel, and the material channel is opposite to the injection port, the bottom surface of the upper template is provided with an extrusion cavity, the outer edge of the extrusion cavity is provided with a fitting embedding groove, and the four corners of the upper template are provided with a first positioning sleeve that cooperates with four positioning pins.

[0008] Preferably, the material channel includes a T-shaped groove formed on the upper template body, and material holes penetrating the upper template are formed on both sides of the T-shaped groove.

[0009] Preferably, the lower mold includes a lower template body, which is fastened together with the upper template body. Two spray gun housing cavities are formed on the upper surface of the lower template body. A rubber-coated cavity is integrally embedded in the spray gun housing handle of the spray gun housing. Cooling water channels are formed inside the lower template body. Second positioning sleeves are fixedly connected to the four corners of the lower template body.

[0010] Preferably, the cooling water channel includes a U-shaped water channel, and both ends of the U-shaped water channel are fixedly connected to water source inlets.

[0011] Preferably, the mold includes a block embedded in the handle of the spray gun housing, the block having a feed hole that matches the material channel, the feed hole being connected to the overmolding cavity, and extrusion tops being fixedly connected to both the front and rear ends of the block, the upper end of the extrusion tops pressing against the top surface of the extrusion cavity.

[0012] The beneficial effects of this utility model are:

[0013] In use, the two interlocking spray gun housings are placed into their respective cavities, and the mold is placed at the spray gun housing handle. The mold is then installed on an injection molding machine, with the injection port inserted into the injection gun. Plastic flows sequentially through the injection port, material channel, and feed hole into the overmolding cavity. Simultaneously, the cooling water channel is connected to an external water source to cool the lower mold body, completing the overmolding operation at the spray gun housing handle. The upper mold is then opened, and the two extrusion pins are pulled to remove the mold. The overmolded spray gun housing can then be removed. Compared to current molds consisting of an upper and lower mold, this invention utilizes an independent mold, making alignment, assembly, and demolding after overmolding easier. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the disassembly of the upper mold of this utility model;

[0016] Figure 3 This is a bottom view of the disassembled upper mold of this utility model;

[0017] Figure 4 This is a schematic diagram of the lower mold structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the disassembly of the lower mold of this utility model.

[0019] In the diagram: Upper mold 1, upper mold plate 11, positioning pin 12, pin bar 121, annular groove 122, injection port 13, upper template 14, upper template body 141, material channel 142, extrusion cavity 143, fitting and embedding groove 144, first positioning sleeve 145, lower mold 2, lower template body 21, spray gun housing cavity 22, overmolding cavity 23, cooling water channel 24, U-shaped water channel 241, water source connection nozzle 242, second positioning sleeve 25, mold 3, mold block 31, feed hole 32, extrusion pin 33, base 4, T-slot 5, material hole 6. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-5 This utility model provides a technical solution: a spray gun housing coating mold, including an upper mold 1, a lower mold 2 fastened to the lower part of the upper mold 1, a mold 3 assembled inside the lower mold 2, and a base 4 fixedly connected to the bottom surface of the lower mold 2.

[0022] Specifically, the upper mold 1 includes an upper mold plate 11, with positioning pins 12 fixedly connected at the four corners of the upper mold plate 11, an injection port 13 fixedly connected at the middle of the upper mold plate 11, and an upper template 14 fixedly connected at the lower end of the upper mold plate 11.

[0023] Specifically, the positioning pin 12 includes a pin 121, and the outer arm of the pin 121 is uniformly provided with annular grooves 122.

[0024] Specifically, the upper template 14 includes an upper template body 141. A material channel 142 is provided on the upper surface of the upper template body 141, and the material channel 142 is opposite to the injection port 13. An extrusion cavity 143 is provided on the bottom surface of the upper template body 141. A fitting and embedding groove 144 is provided on the bottom surface of the upper template body 141 at the outer edge of the extrusion cavity 143. First positioning sleeves 145 that cooperate with four positioning pins 12 are provided at the four corners of the upper template body 141.

[0025] Specifically, the material channel 142 includes a T-shaped groove 5 opened on the upper template body 141, and material holes 6 through the upper template are opened on both sides of the T-shaped groove 5.

[0026] The embedded groove 144 is tightly fitted and pressed against the outer edge of the spray gun housing, increasing the sealing of the upper outer edge of the spray gun housing and preventing plastic leakage.

[0027] Specifically, the lower mold 2 includes a lower mold body 21, which is fastened together with the upper mold body 141. Two spray gun housing cavities 22 are formed on the upper surface of the lower mold body 21. A rubber-coated cavity 23 is integrally embedded in the spray gun housing handle of the spray gun housing cavity 22. Cooling water channels 24 are formed inside the lower mold body 21. Second positioning sleeves 25 are fixedly connected at the four corners of the lower mold body 21. The second positioning sleeves 25 are inserted into the positioning pins 12.

[0028] The outer edge of the overmolding cavity 23 is tightly pressed against the outer wall of the spray gun housing to prevent plastic leakage and avoid overmolding failure.

[0029] Specifically, the cooling water channel 24 includes a U-shaped water channel 241, and both ends of the U-shaped water channel 241 are fixedly connected to water source connection nozzles 242.

[0030] Specifically, the mold 3 includes a block 31 embedded in the handle of the spray gun housing. The block 31 has a feed hole 32 that matches the material channel 142. The feed hole 32 is connected to the overmolding cavity 23. Both the front and rear ends of the block 31 are fixedly connected with extrusion pins 33. The upper end of the extrusion pins 33 presses against the top surface of the extrusion cavity 143.

[0031] Working principle: In use, the two interlocking spray gun housings are placed into the two spray gun housing cavities 22 respectively, and the mold 3 is placed at the handle of the spray gun housing. Then, the mold is installed on the injection molding machine, so that the injection port 13 is inserted and squeezed together with the injection gun of the injection molding machine. The plastic will enter the overmolding cavity 23 through the injection port 13, the material channel 142, and the feed hole 32 in sequence. At the same time, the cooling water channel 24 is connected to the external water source to cool the lower mold body 21, completing the overmolding operation at the handle of the spray gun housing. At this time, the upper mold 1 is opened, and the two extrusion pins 33 are pulled to remove the mold 3. The overmolded spray gun housing can then be taken out. Compared with the current molds composed of an upper mold and a lower mold, this utility model uses an independent mold 3, which makes the mold easier to align and assemble and demold after overmolding.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A spray gun housing overmolding mold, comprising an upper mold (1), characterized in that: The lower mold (2) is fastened to the lower part of the upper mold (1), and the mold (3) is assembled inside the lower mold (2). The bottom surface of the lower mold (2) is fixedly connected to the base (4). The upper mold (1) includes an upper mold plate (11), with positioning pins (12) fixedly connected at the four corners of the upper mold plate (11), an injection port (13) fixedly connected in the middle of the upper mold plate (11), and an upper template (14) fixedly connected at the lower end of the upper mold plate (11). The positioning pin (12) includes a pin (121), and the outer arm of the pin (121) is uniformly provided with annular grooves (122); The upper template (14) includes an upper template body (141), the upper surface of the upper template body (141) is provided with a material channel (142), and the material channel (142) is opposite to the injection port (13). The bottom surface of the upper template body (141) is provided with an extrusion cavity (143). The bottom surface of the upper template body (141) located at the outer edge of the extrusion cavity (143) is provided with a fitting embedding groove (144). The four corners of the upper template body (141) are provided with first positioning sleeves (145) that cooperate with four positioning pins (12). The material channel (142) includes a T-shaped groove (5) opened on the upper template body (141), and material holes (6) penetrating the upper template are opened on both sides of the T-shaped groove (5); The lower mold (2) includes a lower mold body (21), which is fastened together with the upper mold body (141). The upper surface of the lower mold body (21) has two spray gun housing cavities (22). The spray gun housing cavity (22) is integrally embedded with a rubber-coated cavity (23) at the spray gun housing handle. The interior of the lower mold body (21) has a cooling water channel (24). The four corners of the lower mold body (21) are fixedly connected with a second positioning sleeve (25). The second positioning sleeve (25) is inserted into the positioning pin (12). The cooling water channel (24) includes a U-shaped water channel (241), and both ends of the U-shaped water channel (241) are fixedly connected to water source connection nozzles (242); The mold (3) includes a block (31) embedded in the handle of the spray gun housing. The block (31) has a feed hole (32) that matches the material channel (142). The feed hole (32) is connected to the rubber-coating cavity (23). Both the front and rear ends of the block (31) are fixedly connected with extrusion pins (33). The upper end of the extrusion pins (33) is pressed against the top surface of the extrusion cavity (143).

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