Injection mold with cleaning function

Abstract

This utility model belongs to the field of injection mold technology, specifically relating to an injection mold with a cleaning function. It includes an upper mounting base, an upper mold plate, a lower mold plate, and a lower mounting base arranged sequentially. The upper mounting base is fixedly connected to the upper mold plate, and the lower mounting base is fixedly connected to the lower mold plate. A locking module is detachably provided between the edges of the connection between the upper and lower mold plates. A lower mold core is fixedly connected to the inner top of the lower mold plate. Several sets of lower cavities are symmetrically formed on the surface of the lower mold core, and a flow channel is formed between the tops of the opposing lower cavities. A cleaning mechanism is provided at the bottom of the lower mold plate, including several first spray holes and second spray holes. The beneficial effect of this utility model is that, by providing a cleaning mechanism, the upper and lower cavities can be cleaned before injection molding, avoiding dust and impurities in the mold during injection molding, thereby improving product quality.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to an injection mold with a cleaning function. Background Technology

[0002] Injection molds are the core equipment in plastic molding and processing, playing a crucial role in the plastics industry. They inject molten plastic under high pressure into a precisely designed cavity, where it cools and solidifies to obtain the desired shape. Injection molds are widely used in numerous fields such as automotive, electronics, home appliances, and medical. The main structure of an injection mold consists of molding components, a gating system, a guiding and positioning system, a demolding mechanism, a temperature control system, and a venting system. The molding components directly determine the shape and dimensional accuracy of the product; the gating system controls the flow and filling of the plastic; the guiding system ensures precise mold closing; the demolding mechanism allows the product to be smoothly ejected; the temperature control system maintains a suitable mold temperature to ensure molding quality; and the venting system removes gases from the cavity to prevent product defects.

[0003] Existing injection molds make it difficult to clean the mold cavity during injection. When impurities are present in the cavity, the injection molded workpiece is prone to defects, affecting the molding quality. Furthermore, when the vacuum between the workpiece and the mold cavity is large, it is not convenient to demold the workpiece, and forced demolding can easily damage the workpiece. Utility Model Content

[0004] The purpose of this invention is to solve the problem that existing injection molds are difficult to clean the cavity and cannot avoid demolding.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An injection mold with a cleaning function includes an upper mounting base, an upper template, a lower template, and a lower mounting base arranged sequentially. The upper mounting base is fixedly connected to the upper template, and the lower mounting base is fixedly connected to the lower template. A locking module is detachably provided between the edges of the connection between the upper and lower templates. A lower mold core is fixedly connected to the top inner side of the lower template. Several sets of lower cavities are symmetrically opened on the surface of the lower mold core. A runner is opened between the tops of the lower cavities facing each other. A cleaning mechanism is provided at the bottom of the lower template. The cleaning mechanism includes several first spray holes and second spray holes. The first spray holes are opened at the middle of the bottom of the lower cavity facing the runner. The second spray holes are opened on both sides of the bottom of the lower cavity away from the runner. The tops of the first spray holes and the second spray holes are inclined towards the middle of the lower cavity.

[0007] Furthermore, the cleaning mechanism also includes an air pump, which is fixedly connected to the side wall of the lower template. The air pump's outlet pipe is connected to a main pipe, and the other end of the main pipe is connected to a pair of branch pipes. The pair of branch pipes are respectively located on both sides of the bottom of the lower template. Several exhaust pipes are symmetrically connected to the two sides of the pair of branch pipes. The bottom ends of the first spray hole and the second spray hole are connected to the adjacent exhaust pipe.

[0008] Furthermore, a gate is provided at the top center of the upper mounting base, a main flow chamber is fixedly connected inside the upper mounting base, the gate communicates with the main flow chamber, and several outlet pipes are connected to the bottom pipe of the main flow chamber.

[0009] Furthermore, an upper mold core is fixedly connected to the bottom inner side of the upper template, and the bottom of the upper mold core is symmetrically opened in several sets of upper cavities, with the upper cavities and lower cavities communicating with each other.

[0010] Furthermore, the bottom end of the outlet pipe is connected to the diversion channel pipe.

[0011] Furthermore, several guide rods are vertically arranged between the bottom of the lower template and the lower mounting base, and a top plate is horizontally slidably connected between the guide rods. Several sets of push rods are vertically fixedly connected to the top of the top plate. A pair of demolding holes are opened at the bottom of each lower cavity. The top of the push rod extends through the bottom of the lower template and into the demolding hole. Several springs are connected between the top plate and the bottom of the lower template, and several limiting blocks are fixedly connected at the four corners of the top of the top plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. The present invention relates to an injection mold with a cleaning function, which, by setting a cleaning mechanism, can clean the upper and lower cavities before injection molding, thereby avoiding dust and impurities in the mold during injection molding and thus improving product quality.

[0014] 2. The present invention provides an injection mold with a cleaning function, which, by providing a first spray hole, a second spray hole, a demolding hole and an ejector pin, allows gas to be introduced into the cavity after injection molding, facilitating demolding of the workpiece and improving demolding efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an injection mold with a cleaning function according to the present invention.

[0016] Figure 2 This is a side view of an injection mold with a cleaning function according to the present invention.

[0017] Figure 3This is a schematic diagram of the internal structure of an injection mold with a cleaning function according to the present invention.

[0018] Figure 4 This is a schematic diagram of a cleaning mechanism for injection molds with cleaning function according to the present invention.

[0019] Figure 5 This is a schematic diagram of the bottom structure of the lower template of an injection mold with a cleaning function according to the present invention.

[0020] Figure 6 This is a top view of the lower template of an injection mold with a cleaning function according to the present invention.

[0021] Figure 7 This is an enlarged schematic diagram of the lower cavity structure of an injection mold with cleaning function according to the present invention.

[0022] In the diagram: 1. Upper mounting base; 2. Upper template; 3. Lower template; 4. Lower mounting base; 5. Top plate; 6. Cleaning mechanism; 601. Air pump; 602. Main flow pipe; 603. Diverter pipe; 604. Exhaust pipe; 605. First spray nozzle; 606. Second spray nozzle; 7. Locking module; 8. Gate; 9. Guide rod; 10. Spring; 11. Limiting block; 12. Main flow cavity; 13. Liquid outlet pipe; 14. Upper mold core; 15. Upper cavity; 16. Lower mold core; 17. Lower cavity; 18. Runner; 19. Demolding hole. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1 and Figure 4-7The injection mold with cleaning function in this embodiment is characterized by: including an upper mounting base 1, an upper template 2, a lower template 3, and a lower mounting base 4 arranged sequentially; the upper mounting base 1 is fixedly connected to the upper template 2, and the lower mounting base 4 is fixedly connected to the lower template 3; a locking module 7 is detachably provided between the edges of the connection between the upper template 2 and the lower template 3 for locking the upper template 2 and the lower template 4 during injection molding; a lower mold core 16 is fixedly connected to the top inner side of the lower template 3; several sets of lower cavities 17 are symmetrically opened on the surface of the lower mold core 16; a flow channel 18 is opened between the tops of the lower cavities 17; a cleaning mechanism 6 is provided at the bottom of the lower template 3 for air-jet cleaning of the interior of the lower cavities 17; the cleaning mechanism 6 includes several first spray holes 605 and second spray holes 606. The first nozzle 605 is located at the bottom of the lower cavity 17, at the middle of one end facing the diversion channel 18. The second nozzle 606 is located at the bottom of the lower cavity 17, at both ends away from the diversion channel 18. The tops of the first nozzle 605 and the second nozzle 606 are inclined towards the middle of the lower cavity 17. The cleaning mechanism 6 also includes an air pump 601, which is fixedly connected to the side wall of the lower template 3. The air outlet pipe of the air pump 601 is connected to a main pipe 602. The other end of the main pipe 602 is connected to a pair of diversion pipes 603. The pair of diversion pipes 603 are respectively located on both sides of the bottom of the lower template 3. Several exhaust pipes 604 are symmetrically connected to the two sides of the pair of diversion pipes 603. The bottom ends of the first nozzle 605 and the second nozzle 606 are connected to the adjacent exhaust pipes 604. During injection molding, the upper mounting base 1 drives the upper mold plate 2 to move towards the lower mold plate 3. At this time, high-pressure airflow is input into the main flow pipe 602 through the air pump 601. The airflow flows along the main flow pipe 602 to the branch pipe 603, then flows into the exhaust pipe 604, and finally is ejected through the first spray hole 605 and the second spray hole 606 at the bottom of the lower cavity 17, which cleans the inside of the lower cavity 17 in all directions, thereby realizing automatic cleaning of the mold and avoiding dust and impurities in the lower cavity 17 from affecting the molding quality of the workpiece.

[0025] Please see Figure 3The upper mounting base 1 has a gate 8 at its top center. The upper mounting base 1 has a main channel cavity 12 fixedly connected inside. The gate 8 is connected to the main channel cavity 12. The bottom pipe of the main channel cavity 12 is connected to several liquid outlet pipes 13. The bottom of the inner side of the upper mold plate 2 is fixedly connected to the upper mold core 14. The bottom of the upper mold core 14 is symmetrically opened with several sets of upper cavities 15. The upper cavities 15 are connected to the lower cavity 17. The bottom end of the liquid outlet pipes 13 is connected to the branch channel 18. When the upper mold plate 2 moves, it drives the upper mold core 14 and the upper cavity 15 to move towards the lower mold plate 3. As the upper cavity 15 approaches the upper cavity 17, the high-pressure airflow ejected through the first nozzle 605 and the second nozzle 606 forms a backflow in the upper cavity 15 and the upper cavity 17, achieving synchronous cleaning of the upper cavity 15. When the upper mold 2 abuts against the lower mold 3, the upper cavity 15 and the upper cavity 17 are connected. At this time, the air pump 601 is turned off, and then the upper mold plate 2 and the lower mold plate 3 are locked and fixed by the locking module 7. Then, the raw material is injected into the main cavity 12 through the gate 8. The raw material flows into the branch channel 18 along the liquid outlet pipe 13, and then flows into the upper cavity 15 and the upper cavity 17 on both sides through the branch channel 18. The product can be molded through the upper cavity 15 and the upper cavity 17.

[0026] Please see Figure 2 Several guide rods 9 are vertically arranged between the bottom of the lower template 3 and the lower mounting base 4. A top plate 5 is horizontally slidably connected between the guide rods 9. Several sets of ejector rods are vertically fixedly connected to the top of the top plate 5. Each lower cavity 17 has a pair of demolding holes 19 at its bottom. The top of the ejector rod extends through the bottom of the lower template 3 into the demolding hole 19. Several springs 10 are connected between the top plate 5 and the bottom of the lower template 3. Several limiting blocks 11 are fixedly connected to the four corners of the top of the top plate 5. After molding, the upper template 2 separates from the lower template 3. At this time, gas is injected into the lower cavity 17 again through the first spray hole 605 and the second spray hole 606, so that the product is detached from the lower cavity 17 under the action of air pressure. Finally, the top plate 5 and the ejector rods are pushed along the guide rods 9 towards the lower cavity 17, so that the ejector rods extend along the demolding hole 19 and eject the product inside the lower cavity 17, realizing rapid demolding of the product and effectively improving demolding efficiency.

[0027] Working principle: During injection molding, the upper mounting base 1 drives the upper mold plate 2 to move towards the lower mold plate 3. At this time, high-pressure airflow is input into the main flow pipe 602 through the air pump 601. The airflow flows along the main flow pipe 602 to the branch pipe 603, then flows into the exhaust pipe 604, and finally is ejected through the first spray hole 605 and the second spray hole 606 at the bottom of the lower cavity 17, cleaning the interior of the lower cavity 17 in all directions, thereby achieving automatic cleaning of the mold and preventing dust and impurities in the lower cavity 17 from affecting the molding quality of the workpiece. When the upper mold plate 2 moves, it drives the upper mold core 14 and the upper cavity 15 to move towards the lower mold plate 3. As the upper cavity 15 approaches the upper cavity 17, the high-pressure airflow ejected through the first spray hole 605 and the second spray hole 606 forms a backflow in the upper cavity 15 and the upper cavity 17, achieving synchronous cleaning of the upper cavity 15. When the upper mold 2 and the lower mold... When the upper mold cavity 15 and the lower mold cavity 17 are connected, the air pump 601 is turned off, and the upper mold plate 2 and the lower mold plate 3 are locked and fixed by the locking module 7. Then, the raw material is injected into the main mold cavity 12 through the gate 8. The raw material flows into the branch channel 18 along the liquid outlet pipe 13, and then flows into the upper mold cavity 15 and the upper mold cavity 17 on both sides through the branch channel 18. The product can be molded through the upper mold cavity 15 and the upper mold cavity 17. After molding, the upper mold plate 2 and the lower mold plate 3 are separated. At this time, gas is injected into the lower mold cavity 17 again through the first spray hole 605 and the second spray hole 606, so that the product is detached from the lower mold cavity 17 under the action of air pressure. Finally, the top plate 5 and the ejector rod are pushed into the lower mold cavity 17 along the guide rod 9, so that the ejector rod extends along the demolding hole 19 and ejects the product inside the lower mold cavity 17, realizing the rapid demolding of the product and effectively improving the demolding efficiency.

[0028] 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. An injection mold with a cleaning function, characterized in that: The assembly includes an upper mounting base (1), an upper template (2), a lower template (3), and a lower mounting base (4) arranged sequentially. The upper mounting base (1) is fixedly connected to the upper template (2), and the lower mounting base (4) is fixedly connected to the lower template (3). A locking module (7) is detachably provided between the edges of the connection between the upper template (2) and the lower template (3). A lower mold core (16) is fixedly connected to the top inner side of the lower template (3). Several sets of lower cavities (17) are symmetrically opened on the surface of the lower mold core (16). The tops of the lower cavities (17) facing each other are connected. A flow channel (18) is provided. A cleaning mechanism (6) is provided at the bottom of the lower mold (3). The cleaning mechanism (6) includes a plurality of first spray holes (605) and second spray holes (606). The first spray holes (605) are opened at the middle of one end of the bottom of the lower cavity (17) facing the flow channel (18). The second spray holes (606) are opened on both sides of one end of the bottom of the lower cavity (17) away from the flow channel (18). The tops of the first spray holes (605) and the second spray holes (606) are inclined towards the middle of the lower cavity (17).

2. The injection mold with cleaning function according to claim 1, characterized in that: The cleaning mechanism (6) also includes an air pump (601), which is fixedly connected to the side wall of the lower template (3). The air outlet pipe of the air pump (601) is connected to a main pipe (602), and the other end of the main pipe (602) is connected to a pair of branch pipes (603). The pair of branch pipes (603) are respectively arranged on both sides of the bottom of the lower template (3). A number of exhaust pipes (604) are symmetrically connected on both sides of the pair of branch pipes (603). The bottom ends of the first spray hole (605) and the second spray hole (606) are connected to the adjacent exhaust pipe (604).

3. The injection mold with cleaning function according to claim 1, characterized in that: The upper mounting base (1) has a gate (8) at the top center. The upper mounting base (1) has a main channel cavity (12) fixedly connected inside. The gate (8) is connected to the main channel cavity (12). The bottom pipeline of the main channel cavity (12) is connected to several liquid outlet pipes (13).

4. The injection mold with cleaning function according to claim 1, characterized in that: The upper mold core (14) is fixedly connected to the bottom inner side of the upper template (2). The bottom of the upper mold core (14) is symmetrically opened in several upper cavities (15), and the upper cavities (15) are connected to the lower cavity (17).

5. The injection mold with cleaning function according to claim 3, characterized in that: The bottom end of the outlet pipe (13) is connected to the branch channel (18).

6. The injection mold with cleaning function according to claim 1, characterized in that: A number of guide rods (9) are vertically arranged between the bottom of the lower template (3) and the lower mounting base (4). A top plate (5) is horizontally slidably connected between the guide rods (9). A number of sets of push rods are vertically fixedly connected to the top of the top plate (5). A pair of demolding holes (19) are opened at the bottom of each lower cavity (17). The top of the push rod extends through the bottom of the lower template (3) and into the demolding hole (19). A number of springs (10) are connected between the bottom of the top plate (5) and the lower template (3). A number of limiting blocks (11) are fixedly connected at the four corners of the top of the top plate (5).

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