Plastic mold for double-color injection molding process

Abstract

The utility model relates to the technical field of double-color plastic molds, in particular to a double-color injection molding process plastic mold which comprises a lower fixing plate, a male mold plate is arranged above the top end of the outer wall of the lower fixing plate, and small pull rods are installed at the corners of the top end of the outer wall of the lower fixing plate. The outer walls of the upper side and the lower side of the male mold plate are in sliding connection with the outer walls of the small pull rods through through holes, a female mold plate is arranged above the top end of the outer wall of the male mold plate, and a filling nozzle is arranged above the top end of the outer wall of the female mold plate. And the device can realize simultaneous injection molding of two different materials in one mold, so that the molding period is shortened, the product competitiveness is improved, and the device is more convenient for personnel to use.

Description

Technical Field

[0001] The utility model relates to the technical field of double-color plastic molds, in particular to a double-color injection molding process plastic mold. Background Art

[0002] Two-color molding mainly uses two material pipes of a two-color molding machine with two sets of molds to form two-color products through two moldings in sequence. The existing two-color products mostly use one injection molding of PC transparent material and a second injection molding of PC white material. Because the product is made of two raw materials, it needs to be injection molded twice, but the existing injection molding machines and injection molds do not have the ability to inject two different materials. Therefore, for two-color products, personnel can only complete the injection molding through two injection molding processes and injection molding equipment. Therefore, the existing two-color molding injection molds have certain shortcomings.

[0003] In summary, it is necessary to invent a two-color injection molding process plastic mold. Utility Model Content

[0004] To this end, the utility model provides a two-color injection molding process plastic mold to solve the problem that the existing injection molding machine and injection mold are not capable of injecting two different materials. Therefore, for two-color products, personnel can only complete the injection molding through two injection molding processes and injection molding equipment.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a two-color injection molding process plastic mold, including a lower fixed plate, a male mold plate is arranged above the top of the outer wall of the lower fixed plate, small pull rods are installed at the top corners of the outer wall of the lower fixed plate, the upper and lower outer walls of the male mold plate are slidably connected with the outer walls of the small pull rods through through holes, a female mold plate is arranged above the top of the outer wall of the male mold plate, and a filling nozzle is arranged above the top of the outer wall of the female mold plate.

[0006] Preferably, mold feet are installed on the top of the outer wall of the lower fixed plate and on the front and rear sides of the male mold plate, the bottom end of the outer wall of the male mold plate is connected to the top of the outer wall of the mold feet, and a dustproof plate is provided on the top of the outer wall of the lower fixed plate and between the two mold feet.

[0007] Preferably, the top ends of the outer walls of the dustproof plates are connected to both sides of the bottom ends of the outer walls of the male mold plate, and the two mold feet and the two dustproof plates together form a rectangle.

[0008] Preferably, a lower ejector plate is installed at the top of the outer wall of the lower fixed plate and between the mold feet, an upper ejector plate is arranged above the top of the outer wall of the lower ejector plate, and the lower ejector plate and the upper ejector plate are both slidably connected to the outer wall of the small pull rod.

[0009] Preferably, a stripping plate is installed above the top of the outer wall of the female template, an upper fixed plate is installed above the top of the outer wall of the stripping plate, the upper end of the filling nozzle is installed on the top of the outer wall of the upper fixed plate, the bottom end of the filling nozzle passes through the stripping plate and abuts against the top of the inner wall of the female template, and foot pads are fixed at the front and rear ends of the left sides of the outer walls of the female template and the male template.

[0010] Preferably, the upper fixed plate, stripping plate and mother template are all slidably connected to the outer wall of the small pull rod by opening avoidance holes, and the mother template and the mold core bundle block are opposite to each other. A mold core mounting hole is opened, and the inner wall of the mold core mounting hole is embedded with a mold core bundle block.

[0011] Preferably, a female mold core is installed in the mold core installation hole of the female template, a first female mold insert is arranged on the front side of the top end of the inner wall of the female mold core, and a second female mold insert is arranged on the rear side of the top end of the inner wall of the female mold core.

[0012] Preferably, a male mold core is installed in the mold core installation hole of the mold core bundle block, and a first male mold insert is arranged at the top end of the outer wall of the male mold core and corresponds to the middle length of the first female mold insert, and a second male mold insert is arranged at the upper end of the top end of the outer wall of the male mold core and corresponds to the middle length of the second female mold insert.

[0013] Preferably, a first ejector pin is arranged at the bottom end of the outer wall of the male mold core and at the corners corresponding to the first male mold insert and the second male mold insert, and a second ejector pin is arranged at the bottom end of the outer wall of the male mold core and on the side opposite to the first ejector pin, and the bottom ends of the second ejector pins pass through the bottom end of the outer wall of the male mold plate and abut against the top end of the outer wall of the upper ejector pin plate.

[0014] Preferably, a support column and an ejection limit block are installed at the top end of the outer wall of the lower fixed plate, and the upper ends of the support column and the ejection limit block pass through the lower ejector plate and the upper ejector plate and abut against the bottom end of the outer wall of the male template.

[0015] The beneficial effects of the utility model are:

[0016] In the utility model, by replacing the mother mold core, the device can realize the simultaneous injection molding of two different materials in one mold, shorten the molding cycle, improve the competitiveness of the product, and make it more convenient for personnel to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model in the side view direction;

[0018] Figure 2 For this utility model Figure 1 Schematic diagram of the three-dimensional structure of the bottom of the middle mold;

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the mother template in the utility model when viewed from above;

[0020] Figure 4 It is a schematic diagram of a part of the structure of the male mold core in the utility model when viewed from above;

[0021] Figure 5 It is a partial structural schematic diagram of the male mold core in the utility model when viewed from the upward direction.

[0022] In the figure: 100, upper fixed plate; 110, filling nozzle; 120, stripper plate; 130, female mold plate; 131, female mold core; 132, first female mold insert; 133, second female mold insert; 140, foot pad; 200, male mold plate; 201, first male mold insert; 202, second male mold insert; 203, first ejector pin; 204, second ejector pin; 205, male mold core; 210, mold foot; 220, lower fixed plate; 230, dustproof plate; 240, mold core bundle block; 250, small pull rod; 300, support column; 310, ejection limit block; 320, upper ejector plate; 330, lower ejector plate. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0024] See attached Figure 1-5 The double-color injection molding plastic mold provided by the utility model includes a lower fixed plate 220, a male template 200 is arranged above the top of the outer wall of the lower fixed plate 220, and the male template 200 is arranged to cooperate with the female template 130 to perform injection molding on the product, and small tie rods 250 are installed at the top corners of the outer wall of the lower fixed plate 220. The upper and lower outer walls of the male template 200 are slidably connected with the outer wall of the small tie rod 250 through through holes, and a female template 130 is arranged above the top of the outer wall of the male template 200. A filling nozzle 110 is arranged above the top of the outer wall of the female template 130. The filling nozzle 110 is arranged to facilitate personnel to add injection liquid into the mold for injection molding. Injection molding, mold feet 210 are installed at the top of the outer wall of the lower fixed plate 220 and located on the front and rear sides of the male mold plate 200, the bottom end of the outer wall of the male mold plate 200 is connected to the top of the outer wall of the mold feet 210, and a dustproof plate 230 is arranged at the top of the outer wall of the lower fixed plate 220 and located between the two mold feet 210. The top of the outer wall of the dustproof plate 230 is connected to both sides of the bottom end of the outer wall of the male mold plate 200. The two mold feet 210 and the two dustproof plates 230 are enclosed into a rectangle, and the mold feet 210 and the dustproof plates 230 are arranged to support the bottom end of the male mold plate 200, and also to protect the upper ejector plate 320 and the lower ejector plate 330;

[0025] The top of the outer wall of the lower fixed plate 220 is provided with a lower ejector plate 330 between the mold feet 210, and the top of the outer wall of the lower ejector plate 330 is provided with an upper ejector plate 320. The lower ejector plate 330 and the upper ejector plate 320 are both slidably connected to the outer wall of the small pull rod 250. The lower ejector plate 330 and the upper ejector plate 320 are provided so as to be able to eject the molded product from the first male mold insert 201 and the second male mold insert 202 through the first ejector pin 203 and the second ejector pin 204. The top of the outer wall of the female mold plate 130 is provided with an upper ejector plate 320. A stripper plate 120 is installed, an upper fixing plate 100 is installed above the top of the outer wall of the stripper plate 120, the upper end of the filling nozzle 110 is installed on the top of the outer wall of the upper fixing plate 100, the bottom end of the filling nozzle 110 passes through the stripper plate 120 and abuts against the top of the inner wall of the female template 130, and the front and rear ends of the left sides of the outer walls of the female template 130 and the male template 200 are fixed with foot pads 140, and the foot pads 140 are provided to facilitate personnel to separate the female template 130 from the male template 200 after the injection molding is completed, so as to facilitate the subsequent material removal process;

[0026] The upper fixed plate 100, the stripping plate 120 and the female template 130 are all slidably connected to the outer wall of the small pull rod 250 by opening an avoidance hole. The female template 130 and the mold core bundle block 240 are both provided with a mold core mounting hole on the opposite side. The mold core bundle block 240 is embedded in the inner wall of the mold core mounting hole. The mold core bundle block 240 is provided to fix the female mold core 131 and the male mold core 205 installed in the mold core mounting hole, and it is also convenient for personnel to take out and replace the female mold core 131 and the male mold core 205. The female mold core 131 is installed in the mold core mounting hole of the female template 130. A first female mold insert 132 is provided at the front side of the top of the inner wall, and a second female mold insert 133 is provided at the rear side of the top of the inner wall of the female mold core 131. The first female mold insert 132 and the second female mold insert 133 are provided to transport the injection liquid input from the nozzle 110 to between the female mold core 131 and the male mold core 205 for molding. The female mold core 131 is provided with two groups of personnel, and the two groups of the first female mold insert 132 and the second female mold insert 133 can be set as injection molding inserts corresponding to the two-color product, so that the personnel only need to replace the female mold core 131 to respectively inject the two-color product. A male mold core 205 is installed in the mold core installation hole of the bundle block 240. The top of the outer wall of the male mold core 205 is provided with a first male mold insert 201 corresponding to the first female mold insert 132 in the middle length. The upper end of the outer wall of the male mold core 205 is provided with a second male mold insert 202 corresponding to the second female mold insert 133 in the middle length. The first male mold insert 201 and the second male mold insert 202 are provided to mold the bottom end of the injection molded product. The bottom end of the outer wall of the male mold core 205 and the first male mold insert 201 and the second male mold insert 202 are provided with a first ejector pin 203 at the corners corresponding to the first male mold insert 201 and the second male mold insert 202. A second ejector 204 is provided at the bottom end of the outer wall of the core 205 and on the opposite side of the first ejector 203. The first ejector 203 and the second ejector 204 are provided to remove the product after the injection molding of the product is completed. The bottom end of the second ejector 204 passes through the bottom end of the outer wall of the male template 200 and abuts against the top end of the outer wall of the upper ejector plate 320. The top end of the outer wall of the lower fixed plate 220 is installed with a support column 300 and an ejection limit block 310. The upper ends of the support column 300 and the ejection limit block 310 pass through the lower ejector plate 330 and the upper ejector plate 320 and abut against the bottom end of the outer wall of the male template 200.

[0027] The use process of the utility model is as follows: first, the personnel can install the male mold core 205 in the mold core installation hole opened at the top of the male mold plate 200, and then install the female mold core 131 for the first injection molding in the mold core installation hole opened at the bottom of the female mold plate 130. After completion, the personnel can place the male mold plate 200 on the top of the mold foot 210 and the dustproof plate 230, and then take out the female mold plate 130 and place the female mold plate 130 on the male mold plate 200, and then fix the male mold plate 200 and the female mold plate 130 with the fixing buckle, and then fix the stripping plate 120 and the upper fixing plate 100 in sequence on the top of the female mold plate 130;

[0028] After completion, the personnel can fix the lower fixing plate 220 on the injection molding machine, and then inject the injection liquid of the primary raw material into the mold through the filling nozzle 110, and then the injection liquid will flow into the first male mold inlet 201 and the second male mold inlet 202 through the first female mold inlet 132 and the second female mold inlet 133, so as to form a first color product between the female mold plate 130 and the male mold plate 200. After the first color product is condensed, the personnel can separate the male mold plate 200 from the female mold plate 130, and then pass the foot pad 140 removes the mother template 130, then removes the mother mold core 131 on the mother template 130, and then replaces the mother mold core 131 for the second injection molding and installs it back to the bottom of the mother template 130. After completion, the personnel reinstalls the mother template 130 on the male template 200, and then performs injection molding again through the nozzle 110, so that the product can complete two-color injection molding. Finally, after the product is cooled, the personnel can eject the product through the first ejector pin 203 and the second ejector pin 204, and then take the product out.

[0029] The above is only a preferred embodiment of the utility model. Any person skilled in the art may modify the utility model by using the above technical solution or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement based on the technical solution of the utility model shall fall within the scope of protection claimed by the utility model.

Claims

1. A two-color injection molding plastic mold, comprising a lower fixing plate (220), characterized in that: A male template (200) is arranged above the top of the outer wall of the lower fixed plate (220), and small pull rods (250) are installed at the corners of the top of the outer wall of the lower fixed plate (220). The upper and lower outer walls of the male template (200) are slidably connected to the outer wall of the small pull rod (250) through through holes. A female template (130) is arranged above the top of the outer wall of the male template (200), and a filling nozzle (110) is arranged above the top of the outer wall of the female template (130).

2. The double-color injection molding plastic mold according to claim 1, characterized in that: Mold feet (210) are installed at the top of the outer wall of the lower fixed plate (220) and located on the front and rear sides of the male mold plate (200), the bottom end of the outer wall of the male mold plate (200) is connected to the top of the outer wall of the mold feet (210), and a dustproof plate (230) is provided at the top of the outer wall of the lower fixed plate (220) and located between the two mold feet (210).

3. The double-color injection molding plastic mold according to claim 2, characterized in that: The top ends of the outer walls of the dustproof plates (230) are connected to both sides of the bottom ends of the outer walls of the male mold plate (200), and the two mold feet (210) and the two dustproof plates (230) together form a rectangle.

4. The double-color injection molding plastic mold according to claim 3, characterized in that: A lower ejector plate (330) is installed at the top of the outer wall of the lower fixed plate (220) and between the mold feet (210), and an upper ejector plate (320) is arranged above the top of the outer wall of the lower ejector plate (330). Both the lower ejector plate (330) and the upper ejector plate (320) are slidably connected to the outer wall of the small pull rod (250).

5. The double-color injection molding plastic mold according to claim 1, characterized in that: A stripping plate (120) is installed above the top of the outer wall of the female template (130), and an upper fixing plate (100) is installed above the top of the outer wall of the stripping plate (120). The upper end of the filling nozzle (110) is installed on the top of the outer wall of the upper fixing plate (100), and the bottom end of the filling nozzle (110) passes through the stripping plate (120) and abuts against the top of the inner wall of the female template (130). Foot pads (140) are fixed at the front and rear ends of the left sides of the outer walls of the female template (130) and the male template (200).

6. The double-color injection molding plastic mold according to claim 5, characterized in that: The upper fixed plate (100), the stripping plate (120) and the mother template (130) are all slidably connected to the outer wall of the small pull rod (250) by opening an avoidance hole, and the mother template (130) and the mold core bundle block (240) are each provided with a mold core mounting hole on the side opposite to the mold core bundle block (240), and the inner wall of the mold core mounting hole is embedded with a mold core bundle block (240).

7. The double-color injection molding plastic mold according to claim 6, characterized in that: A mother mold core (131) is installed in the mold core installation hole of the mother mold plate (130), a first mother mold insert (132) is arranged on the front side of the top end of the inner wall of the mother mold core (131), and a second mother mold insert (133) is arranged on the rear side of the top end of the inner wall of the mother mold core (131).

8. The double-color injection molding plastic mold according to claim 7, characterized in that: A male mold core (205) is installed in the mold core installation hole of the mold core bundle block (240); a first male mold insert (201) is arranged at the top end of the outer wall of the male mold core (205) and corresponds to the first female mold insert (132) in the middle of the length; a second male mold insert (202) is arranged at the upper end of the top end of the outer wall of the male mold core (205) and corresponds to the second female mold insert (133) in the middle of the length.

9. The double-color injection molding plastic mold according to claim 8, characterized in that: A first ejector pin (203) is arranged at the bottom end of the outer wall of the male mold core (205) and at the corners corresponding to the first male mold insert (201) and the second male mold insert (202); a second ejector pin (204) is arranged at the bottom end of the outer wall of the male mold core (205) and at the side opposite to the first ejector pin (203); the bottom ends of the second ejector pins (204) pass through the bottom end of the outer wall of the male mold plate (200) and abut against the top end of the outer wall of the upper ejector pin plate (320).

10. The double-color injection molding plastic mold according to claim 4, characterized in that: A support column (300) and an ejection limit block (310) are installed at the top end of the outer wall of the lower fixed plate (220); the upper ends of the support column (300) and the ejection limit block (310) pass through the lower ejector plate (330) and the upper ejector plate (320) and abut against the bottom end of the outer wall of the male template (200).

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