Rapid forming die for production of multicolor pen

Abstract

The utility model discloses a rapid forming die for producing a multicolor pen. The rapid forming die comprises a lower die, an upper die and a material returning mechanism, a lower mold core is arranged at the upper end in the lower mold, and injection molding cavities which are uniformly distributed are formed in the lower mold core; uniformly distributed upper mold cores are arranged on the lower side of the upper mold, an injection molding opening is formed in the top wall of the upper mold in a penetrating manner, uniformly distributed material conveying openings are formed in the lower side of the upper mold, and the material conveying openings and the injection molding cavity are mounted in a matched manner; according to the multi-color pen production rapid forming mold, an injection-molded multi-color pen shell can be automatically ejected out through an elastic element, manual discharging is facilitated, the preparation speed of the device for the multi-color pen is increased, the production efficiency is improved, the production cost is reduced, and the production efficiency is improved. And meanwhile, auxiliary water cooling is conducted on the multi-color pen molten-state raw materials in the injection molding cavity through the heat conduction pieces, and then the cooling forming speed of the multi-color pen molten-state raw materials is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of multi-color pen production rapid prototyping, in particular to a multi-color pen production rapid prototyping mould. Background Art

[0002] A multi-color pen is a writing tool that can load multiple colors of ink or refills on a pen body. Generally speaking, multi-color pens often use a rotatable or pressable method to switch between different colors of ink or refills. During the production process of the multi-color pen, the pen shell is injection-molded by a mold. When using a rapid prototyping mold to produce some multi-color pens, first, the upper mold and the lower mold are closed and contacted by a power element, and then the molten raw material of the multi-color pen is injected into the injection cavity in the mold through an injection molding pipe. Then the device is stationary, and the molten raw material of the multi-color pen is cooled and formed through natural cooling. Then the upper mold is removed, and the staff uses a clamping tool to remove the formed multi-color pen shell from the injection cavity. However, the device uses natural stationary cooling, which affects the preparation speed of the multi-color pen. At the same time, the formed multi-color pen shell is closely attached to the inner wall of the injection cavity. It is inconvenient and time-consuming for the staff to use tools to remove the multi-color pen shell from the injection cavity. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a rapid prototyping mold for the production of multi-color pens. The device can automatically eject the injection-molded multi-color pen shell through an elastic element, which is convenient for manual unloading, thereby improving the preparation speed of the multi-color pens by the device. At the same time, the device uses a heat conductive sheet to assist in water cooling of the molten raw materials of the multi-color pens in the injection molding cavity, thereby improving its cooling and molding speed, which can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rapid prototyping mold for producing multi-color pens, comprising a lower mold, an upper mold and a material return mechanism;

[0005] Lower mold: A lower mold core is provided at the upper end thereof, and uniformly distributed injection cavities are provided inside the lower mold core;

[0006] Upper mold: The lower side of the upper mold is provided with evenly distributed upper mold cores, the top wall of the upper mold is penetrated with an injection port, the lower side of the upper mold is provided with evenly distributed feed ports, and the feed ports are installed in coordination with the injection cavity;

[0007] Material return mechanism: It is arranged inside the lower mold and is installed in conjunction with the injection molding cavity. The device can automatically eject the injection-molded multi-color pen shell through an elastic element, which is convenient for manual unloading, thereby increasing the device's preparation speed for multi-color pens. At the same time, the device uses a heat conductive sheet to assist in water cooling of the molten raw material of the multi-color pen in the injection molding cavity, thereby increasing its cooling and molding speed.

[0008] Furthermore, the material return mechanism includes a telescopic column, a spring, a vertical displacement seat and an annular seat. The vertical displacement seat is slidably connected to the interior of the lower mold. Evenly distributed telescopic columns and springs are provided between the bottom wall of the lower mold and the vertical displacement seat. The springs are movably connected to the outer ends of adjacent telescopic columns. Evenly distributed annular seats are provided on the upper side of the vertical displacement seat. The annular seat is installed in cooperation with the injection cavity, so that the upper end of the multi-color pen outer wall can automatically move up to the outside of the injection cavity after cooling and forming, which is convenient for workers to unload materials.

[0009] Furthermore, the material return mechanism also includes a slide groove and a driving slide seat. The slide grooves are evenly opened at the left and right ends of the lower mold. The lower ends of the slide grooves are connected to the interior of the lower mold. The interior of the slide grooves is slidably connected with the driving slide seat. The lower ends of the driving slide seat are fixedly connected to the vertical displacement seat to provide power for the molding and material return of the multi-color pen.

[0010] Furthermore, evenly distributed rubber sealing rings are provided on the lower side of the lower mold core, and the rubber sealing rings are respectively installed in cooperation with the annular seat and the injection cavity to prevent the molten raw material of the multi-color pen from flowing out along the gap between the annular seat and the injection cavity.

[0011] Furthermore, a cooling cavity is opened inside the lower mold core, and cooling pipes are penetrated through the left and right walls of the lower mold, and the cooling pipes are connected to the cooling cavity. A heat conductive plate is provided inside the injection cavity, and the other end of the heat conductive plate is located in the cooling cavity. The multi-color pen shell injection molding is cooled by water cooling to speed up its preparation speed.

[0012] Furthermore, the heat conducting sheet is a copper heat conducting sheet, which has a good heat conducting effect and accelerates the cooling and molding speed of the multi-color pen shell after injection molding.

[0013] Furthermore, a flange is provided on the upper side of the upper mold, and evenly distributed fixing seats are provided on the lower side of the lower mold, so as to facilitate installation of the upper mold and the lower mold used for the production of multi-color pens to designated positions.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the multi-color pen production rapid prototyping mold has the following advantages:

[0015] 1. The external hydraulic rod drives the upper mold to move downward, and the driving slide is compressed and slides vertically along the slide groove. The lower end of the driving slide drives the vertical shift seat to move vertically downward, and the vertical shift seat drives the annular seat to move downward along the inner wall of the injection cavity. The telescopic end of the telescopic column and the spring gradually shrink. After the multi-color pen shell is cooled and formed, the external hydraulic rod is reset, and the lower mold moves upward to release the vertical limit of the driving slide. At this time, the compression elastic force of the spring makes the vertical shift seat drive the annular seat to eject the molded multi-color pen shell in the injection cavity, which is convenient for subsequent manual material removal. The multi-color pen production rapid prototyping mold can automatically eject the injection-molded multi-color pen shell through the elastic element, which is convenient for manual material removal, thereby improving the preparation speed of the device for multi-color pens.

[0016] 2. After the multi-color pen shell is injection molded, cooling water is transported to the cooling cavity through an external water pipe via a cooling pipeline. The molten injection molding material in the injection molding cavity is in heat transfer contact with the water body through the heat conductive sheet, thereby physically assisting the cooling of the molten injection molding material of the multi-color pen shell, thereby accelerating the cooling and molding speed of the multi-color pen shell. The heat conductive sheet is made of copper material and has good thermal conductivity. The multi-color pen is produced in a rapid prototyping mold, and the molten material of the multi-color pen in the injection molding cavity is assisted by water cooling through the heat conductive sheet, thereby increasing its cooling and molding speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic structural diagram of a cross-section of the lower mold of the utility model;

[0019] Figure 3 This is a schematic diagram of the second structure of the lower mold of the utility model;

[0020] Figure 4 This is a schematic diagram of the upper mold structure of the utility model when viewed from above.

[0021] In the figure: 1 lower mold, 2 upper mold, 3 lower mold core, 4 injection cavity, 5 material withdrawal mechanism, 51 telescopic column, 52 spring, 53 vertical shift seat, 54 annular seat, 55 slide groove, 56 driving slide seat, 6 rubber sealing ring, 7 cooling cavity, 8 heat conducting sheet, 9 cooling pipe, 10 upper mold core, 11 injection port, 12 material delivery port, 13 flange, 14 fixed seat. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 , This embodiment provides a technical solution: a rapid prototyping mold for producing multi-color pens, comprising a lower mold 1, an upper mold 2 and a material return mechanism 5;

[0024] The lower mold 1: a lower mold core 3 is provided at the upper end thereof, and injection cavities 4 are evenly distributed inside the lower mold core 3. Evenly distributed rubber sealing rings 6 are provided on the lower side of the lower mold core 3. The rubber sealing rings 6 are respectively installed with the annular seat 54 and the injection cavity 4. A cooling cavity 7 is provided inside the lower mold core 3. Cooling pipes 9 are penetrated through the left and right walls of the lower mold 1. The cooling pipes 9 are connected to the cooling cavity 7. Heat conducting sheets 8 are provided inside the injection cavity 4. The other ends of the heat conducting sheets 8 are located in the cooling cavity. 7, the heat conducting sheet 8 is a copper heat conducting sheet, the injection port 11 is connected with the external injection pipe, and then the cooling pipes 9 at the left and right ends are respectively connected with the external water inlet pipe and the water outlet pipe, and then the hydraulic rod drives the upper mold 2 to move vertically downward through the external hydraulic pump. During the downward movement of the upper mold 2, the upper mold core 10 gradually penetrates into the vertically corresponding injection cavity 4. When the lower side of the upper mold 2 contacts the upper side of the lower mold 1, the upper end of the annular seat 54 moves down to the bottom of the injection cavity 4, and the upper mold core 10 The upper mold core 10 penetrates into the injection cavity 4, and the lower end of the upper mold core 10 is in contact with the inner wall of the annular seat 54 in the injection cavity 4. Then, the closed cavity formed by the upper mold core 10, the injection cavity 4 and the annular seat 54 is filled with the multi-color pen injection material through the external injection pipe through the injection port 11 and the feed port 12. The sealing effect between the annular seat 54 and the injection cavity 4 is improved through the rubber sealing ring 6 to avoid leakage of the multi-color pen injection material. After the multi-color pen shell is injected, it is cooled by the external water pipe. The pipeline 9 transports cooling water into the cooling chamber 7, and the molten injection molding material in the injection molding chamber 4 is in heat transfer contact with the water through the heat conductive sheet 8, thereby physically assisting the cooling of the molten injection molding material of the multi-color pen shell, thereby accelerating the cooling and molding speed of the multi-color pen shell. The heat conductive sheet 8 is made of copper material, which has good thermal conductivity. The multi-color pen production rapid molding mold uses the heat conductive sheet 8 to assist the water cooling of the molten material of the multi-color pen in the injection molding chamber, thereby increasing its cooling and molding speed.

[0025] Upper mold 2: The lower side thereof is provided with evenly distributed upper mold cores 10, the top wall of the upper mold 2 is penetrated with an injection port 11, the lower side of the upper mold 2 is provided with evenly distributed feed ports 12, the feed ports 12 are installed in coordination with the injection cavity 4, the upper side of the upper mold 2 is provided with a flange 13, the lower side of the lower mold 1 is provided with evenly distributed fixing seats 14, when the multi-color pen is rapidly molded, the lower mold 1 is first fixed to the specified position by bolts through the fixing seat 14, and then the upper mold 2 is fixed to the external hydraulic rod through the flange 13, so as to facilitate the installation of the upper and lower molds;

[0026] The material return mechanism 5 is arranged inside the lower mold 1, and the material return mechanism 5 is installed in cooperation with the injection cavity 4. The material return mechanism 5 includes a telescopic column 51, a spring 52, a vertical displacement seat 53 and an annular seat 54. The vertical displacement seat 53 is slidably connected to the inside of the lower mold 1. Uniformly distributed telescopic columns 51 and springs 52 are arranged between the bottom wall of the lower mold 1 and the vertical displacement seat 53. The springs 52 are movably sleeved with the outer ends of the adjacent telescopic columns 51. Uniformly distributed annular seats 54 are arranged on the upper side of the vertical displacement seat 53. The annular seat 54 is installed in cooperation with the injection cavity 4. The material return mechanism 5 also includes a slide 55 and a driving slide 56. The slide 55 is evenly opened at the left and right ends of the lower mold 1. The lower ends of the slide 55 are connected to the inside of the lower mold 1. The interior of the slide 55 is slidably connected with a driving slide 56. The lower ends of the driving slides 56 are connected to the vertical displacement seat 56. The shift seat 53 is fixedly connected. As the upper mold 2 continues to move downward, the driving slide 56 is pressurized and slides vertically along the slide groove 55. The lower end of the driving slide 56 drives the vertical shift seat 53 to move vertically downward. The vertical shift seat 53 drives the annular seat 54 to move downward along the inner wall of the injection cavity 4. The telescopic end of the telescopic column 51 and the spring 52 gradually shrink. After the multi-color pen shell is cooled and formed, the external hydraulic rod is reset, and the lower mold 2 moves upward to release the vertical limit of the driving slide 56. At this time, the compression elastic force of the spring 52 makes the vertical shift seat 53 drive the annular seat 54 to eject the molded multi-color pen shell in the injection cavity 4, which is convenient for subsequent manual material removal and easy to use. The multi-color pen production rapid prototyping mold can automatically eject the injection-molded multi-color pen shell through an elastic element, which is convenient for manual material removal, thereby improving the preparation speed of the device for multi-color pens.

[0027] The working principle of a rapid prototyping mold for multi-color pen production provided by the utility model is as follows: when the multi-color pen is rapidly prototyped, the lower mold 1 is first fixed to the specified position by bolts through the fixing seat 14, and then the upper mold 2 is fixed to the external hydraulic rod through the flange 13, and then the injection port 11 is connected with the external injection pipe, and then the cooling pipes 9 at the left and right ends are respectively connected with the external water inlet pipe and the water outlet pipe, and then the hydraulic rod drives the upper mold 2 to move vertically downward through the external hydraulic pump. During the downward movement of the upper mold 2, the upper The mold core 10 gradually penetrates into the vertically corresponding injection cavity 4. As the upper mold 2 continues to move downward, the driving slide 56 is pressed and slides vertically along the slide groove 55. The lower end of the driving slide 56 drives the vertical displacement seat 53 to move vertically downward. The vertical displacement seat 53 drives the annular seat 54 to move downward along the inner wall of the injection cavity 4. The telescopic end of the telescopic column 51 and the spring 52 gradually shrink. When the lower side of the upper mold 2 contacts the upper side of the lower mold 1, the upper end of the annular seat 54 moves down to the bottom of the injection cavity 4. The upper mold core 10 penetrates into the injection cavity 4, and the upper mold core 10 The lower end is in contact with the inner wall of the annular seat 54 in the injection cavity 4, and then the closed cavity formed by the upper mold core 10, the injection cavity 4 and the annular seat 54 is filled with the multi-color pen injection material through the external injection pipe through the injection port 11 and the feed port 12. The sealing effect between the annular seat 54 and the injection cavity 4 is improved through the rubber sealing ring 6 to avoid leakage of the multi-color pen injection material. After the multi-color pen shell is injection-molded, cooling water is transported to the cooling cavity 7 through the external water pipe through the cooling pipe 9, and the molten injection material in the injection cavity 4 is Through the heat transfer contact between the heat conductive sheet 8 and the water body, the molten injection molding material of the multi-color pen shell is physically assisted to cool, thereby accelerating the cooling and molding speed of the multi-color pen shell. The heat conductive sheet 8 is made of copper material, which has good thermal conductivity. After the multi-color pen shell is cooled and molded, the external hydraulic rod is reset, the lower mold 2 moves up, and the vertical limit of the driving slide 56 is released. At this time, the compression elastic force of the spring 52 makes the vertical displacement seat 53 drive the annular seat 54 to eject the molded multi-color pen shell in the injection cavity 4, which is convenient for subsequent manual material removal and easy to use.

[0028] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A rapid prototyping mold for producing multi-color pens, characterized in that: It comprises a lower mold (1), an upper mold (2) and a material removal mechanism (5); Lower mold (1): a lower mold core (3) is provided at the upper end thereof, and injection cavities (4) are evenly distributed inside the lower mold core (3); The upper mold (2) is provided with evenly distributed upper mold cores (10) on its lower side, an injection port (11) is provided through the top wall of the upper mold (2), and evenly distributed material delivery ports (12) are provided on the lower side of the upper mold (2), and the material delivery ports (12) are installed in coordination with the injection cavity (4); Material return mechanism (5): it is arranged inside the lower mold (1), and the material return mechanism (5) is installed in coordination with the injection molding cavity (4).

2. A rapid prototyping mold for producing multi-color pens according to claim 1, characterized in that: The material-returning mechanism (5) comprises a telescopic column (51), a spring (52), a vertical displacement seat (53) and an annular seat (54); the vertical displacement seat (53) is slidably connected to the interior of the lower mold (1); uniformly distributed telescopic columns (51) and springs (52) are provided between the bottom wall of the lower mold (1) and the vertical displacement seat (53); the springs (52) are movably sleeved with the outer ends of adjacent telescopic columns (51); uniformly distributed annular seats (54) are provided on the upper side of the vertical displacement seat (53); and the annular seat (54) is mounted in cooperation with the injection cavity (4).

3. A rapid prototyping mold for producing multi-color pens according to claim 2, characterized in that: The material return mechanism (5) further comprises a slide groove (55) and a driving slide seat (56). The slide grooves (55) are evenly arranged at the left and right ends of the lower mold (1). The lower ends of the slide grooves (55) are connected to the interior of the lower mold (1). The interior of the slide grooves (55) is slidably connected to the driving slide seat (56). The lower ends of the driving slide seats (56) are fixedly connected to the vertical displacement seat (53).

4. A rapid prototyping mold for producing multi-color pens according to claim 2, characterized in that: The lower side of the lower mold core (3) is provided with uniformly distributed rubber sealing rings (6), and the rubber sealing rings (6) are respectively mounted in cooperation with the annular seat (54) and the injection cavity (4).

5. A rapid prototyping mold for producing multi-color pens according to claim 1, characterized in that: A cooling cavity (7) is provided inside the lower mold core (3), cooling pipes (9) are provided through the left and right walls of the lower mold (1), the cooling pipes (9) are connected to the cooling cavity (7), and a heat conducting sheet (8) is provided inside the injection cavity (4), the other end of the heat conducting sheet (8) is located inside the cooling cavity (7).

6. A rapid prototyping mold for producing multi-color pens according to claim 5, characterized in that: The heat conducting sheet (8) is a copper heat conducting sheet.

7. A rapid prototyping mold for producing multi-color pens according to claim 1, characterized in that: The upper side of the upper mold (2) is provided with a flange (13), and the lower side of the lower mold (1) is provided with evenly distributed fixing seats (14).

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