A hot runner system for precision injection molds

Abstract

The utility model relates to the technical field of injection molds, and in particular to a hot runner system for a precision injection mold, comprising an upper mold and a lower mold, wherein a gate is provided inside the upper mold, a working groove is provided inside the lower mold, an injection groove is installed inside the working groove, a clamping plate is fixedly connected to the outer side of the injection groove, a pulling cover is fixedly connected to the outer side of the clamping plate, a connecting plate is fixedly connected to the outer side of the connecting plate, a conduit is fixedly connected to the outer side of the connecting plate, a positioning rod is movably connected to the inner side of the conduit, a limiting block is fixedly connected to the outer side of the limiting block, a compression spring is fixedly connected to the inner side of the lower mold, a groove is provided inside the lower mold, the utility model has a simple structure, is easy to use, can quickly take out the injection molded workpiece after molding, and can facilitate the installation and disassembly between the upper mold and the lower mold.

Description

Technical Field

[0001] The utility model relates to a hot runner system of a precision injection mold, belonging to the technical field of injection molds. Background Art

[0002] The hot runner mold structure is basically the same as the two-plate mold structure, which is divided into an insulated hot runner system and a heated hot runner system. The insulated hot runner is made of materials with very low thermal conductivity around the runner, and is insulated with molten plastic. The hot runner is heated and the temperature of the runner is controlled by a heating plate on the runner. The hot runner system currently used for injection molding usually includes a hot nozzle, a manifold, and a temperature control device.

[0003] There are still some problems in the use of the existing hot runner system of precision injection molds. For example, it is inconvenient to remove the workpiece inside the injection groove after the existing injection mold is finalized, which leads to low processing efficiency. At the same time, the upper mold and the lower mold are generally connected by a screw, which makes it troublesome to install and disassemble. Utility Model Content

[0004] The purpose of the utility model is to provide a hot runner system for a precision injection mold. The utility model has a simple structure and is easy to use. It can quickly remove the molded injection workpiece and facilitate the installation and disassembly between the upper mold and the lower mold to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A hot runner system for a precision injection mold comprises an upper mold and a lower mold, wherein a gate is provided inside the upper mold, a working groove is provided inside the lower mold, an injection groove is installed inside the working groove, a clamping plate is fixedly connected to the outer side of the injection groove, a pulling cover is fixedly connected to the outer side of the clamping plate, a connecting plate is fixedly connected to the outer side of the connecting plate, a conduit is fixedly connected to the outer side of the connecting plate, a positioning rod is movably connected to the inside of the conduit, a limiting block is fixedly connected to the outer side of the limiting block, a compression spring is fixedly connected to the inner side of the lower mold, and a groove is provided inside the lower mold.

[0007] Furthermore, the lower mold is rotatably connected to a rotating rod inside, the outer side of the rotating rod is fixedly connected to a stabilizing plate, the outer side of the stabilizing plate is fixedly connected to a transmission tube, the transmission tube is rotatably connected to a rotating rod inside, the outer side of the rotating rod is fixedly connected to a connecting rod, the outer side of the connecting rod is fixedly connected to a threaded cover, and a threaded hole is opened inside the lower mold.

[0008] Furthermore, the upper mold and the lower mold are of the same size, and the gate is located directly above the injection groove.

[0009] Furthermore, the injection groove is installed inside the working groove through a clamping plate, and the connecting plates are symmetrically arranged on the outside of the clamping plate.

[0010] Furthermore, the positioning rod is located outside the groove, and one end of the compression spring away from the limiting block is fixedly connected to the outside of the catheter.

[0011] Furthermore, the stabilizing plate is movably connected to the outer side of the lower mold via a rotating rod, and the stabilizing plate is symmetrically distributed on the outer side of the lower mold.

[0012] Furthermore, the threaded cover is movably connected to the outer side of the stabilizing plate through a rotating rod and a connecting rod, and the threaded cover and the threaded hole are meshed with each other.

[0013] The beneficial effects of the utility model are:

[0014] (I) The utility model is provided with an upper mold and a lower mold. First, the hot-melt solution is introduced into the injection molding groove inside the working groove through the gate of the upper mold. At this time, it is shaped by cooling processing to form it inside the injection molding groove. The positioning rod is moved out of the groove by pulling the limit block. At this time, the pulling cover on the outside of the clamping plate is pulled to make the clamping plate drive the injection molding groove to move inside the working groove, so that the injection molding groove is taken out. At this time, the molded injection molded part can be easily taken out. When re-injection is performed, it is only necessary to pull the limit block to make the positioning rod return to the inside of the groove under the action of the compression spring.

[0015] (ii) The utility model provides a lower mold, and a stabilizing plate is rotatably connected to the outer side of the lower mold through a rotating rod. When the upper mold and the lower mold need to be connected, the stabilizing plate is rotated to move it between the upper mold and the lower mold. At this time, the connecting rod is moved inside the transmission tube to drive the threaded cover to move to the outer side of the threaded hole. At this time, the threaded cover on the outer side of the connecting rod is driven to rotate by the rotating rod, so that the threaded cover is threadedly connected to the inside of the threaded hole. At this time, the upper mold and the lower mold can be installed. When disassembly is required, the threaded cover only needs to be taken out of the threaded hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the specific embodiments of the present invention and do not constitute a limitation to the present invention.

[0017] Figure 1 This is a structural schematic diagram of a hot runner system for a precision injection mold of the utility model;

[0018] Figure 2 This is a structural schematic diagram of the outer side of a clamping plate of a hot runner system of a precision injection mold of the utility model;

[0019] Figure 3 This is a structural schematic diagram of the outer side of a stabilizing plate of a hot runner system of a precision injection mold of the utility model;

[0020] Figure 4 This utility model is a precision injection mold hot runner system Figure 1 A magnified view of the structure at center A;

[0021] Numbers in the figure: 1. upper mold; 2. lower mold; 3. gate; 4. working groove; 5. injection groove; 6. clamping plate; 7. pulling cover; 8. connecting plate; 9. guide tube; 10. positioning rod; 11. limit block; 12. compression spring; 13. groove; 14. rotating rod; 15. stabilizing plate; 16. transmission pipe; 17. rotating rod; 18. connecting rod; 19. threaded cover; 20. threaded hole. 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] Example 1 Please refer to Figure 1-Figure 4 , the utility model provides a technical solution:

[0024] A hot runner system for a precision injection mold comprises an upper mold 1 and a lower mold 2. A gate 3 is provided inside the upper mold 1, a working groove 4 is provided inside the lower mold 2, an injection groove 5 is installed inside the working groove 4, a clamping plate 6 is fixedly connected to the outer side of the injection groove 5, a pulling cover 7 is fixedly connected to the outer side of the clamping plate 6, a connecting plate 8 is fixedly connected to the outer side of the clamping plate 6, a conduit 9 is fixedly connected to the outer side of the connecting plate 8, a positioning rod 10 is movably connected to the inside of the conduit 9, a limiting block 11 is fixedly connected to the outer side of the limiting block 11, a compression spring 12 is fixedly connected to the inner side of the limiting block 11, and a groove 13 is provided inside the lower mold 2.

[0025] Specifically, Figure 1As shown, the upper mold 1 and the lower mold 2 are of the same size, the gate 3 is located directly above the injection groove 5, the injection groove 5 is installed inside the working groove 4 through the clamping plate 6, the connecting plates 8 are symmetrically located on the outside of the clamping plates 6, the positioning rod 10 is located on the outside of the groove 13, and the end of the compression spring 12 away from the limit block 11 is fixedly connected to the outside of the conduit 9.

[0026] Example 2 Please refer to Figure 1 , Figure 2 and Figure 4 The difference between this embodiment and embodiment 1 is that: the lower mold 2 is rotatably connected to a rotating rod 14 inside, the outer side of the rotating rod 14 is fixedly connected to a stabilizing plate 15, the outer side of the stabilizing plate 15 is fixedly connected to a transmission tube 16, the transmission tube 16 is rotatably connected to a rotating rod 17 inside, the outer side of the rotating rod 17 is fixedly connected to a connecting rod 18, the outer side of the connecting rod 18 is fixedly connected to a threaded cover 19, and a threaded hole 20 is opened inside the lower mold 2.

[0027] Specifically, Figure 1-4 As shown, the stabilizing plate 15 is movably connected to the outer side of the lower mold 2 through the rotating rod 14, and the stabilizing plate 15 is symmetrically distributed on the outer side of the lower mold 2, the threaded cover 19 is movably connected to the outer side of the stabilizing plate 15 through the rotating rod 17 and the connecting rod 18, and the threaded cover 19 and the threaded hole 20 are engaged with each other.

[0028] The working principle of the utility model is as follows: by setting the upper mold 1 and the lower mold 2, firstly, the hot-melt solution is introduced into the injection groove 5 inside the working groove 4 through the gate 3 of the upper mold 1, and then it is shaped by cooling processing to form it inside the injection groove 5, and the positioning rod 10 is moved out of the groove 13 by pulling the limit block 11, and then the pulling cover 7 outside the clamping plate 6 is pulled to make the clamping plate 6 drive the injection groove 5 to move inside the working groove 4, so that the injection groove 5 is taken out, and at this time, the molded injection molded part can be conveniently taken out, and when re-injection is performed, it is only necessary to pull the limit block 11 to make the positioning rod 10 return to the inside of the groove 13 under the action of the compression spring 12. , by setting up the lower mold 2, and the stabilizing plate 15 is rotatably connected to the outside of the lower mold 2 through the rotating rod 14. When the upper mold 1 and the lower mold 2 need to be connected, the stabilizing plate 15 is rotated to move it between the upper mold 1 and the lower mold 2. At this time, the rotating rod 17 is moved inside the transmission tube 16, so that the connecting rod 18 drives the threaded cover 19 to move to the outside of the threaded hole 20. At this time, the threaded cover 19 on the outside of the connecting rod 18 is driven by the rotating rod 17 to rotate, so that the threaded cover 19 is threadedly connected to the inside of the threaded hole 20. At this time, the upper mold 1 and the lower mold 2 can be installed. When disassembly is required, it is only necessary to remove the threaded cover 19 from the threaded hole 20.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A precision injection mold hot runner system, comprising an upper mold (1) and a lower mold (2), characterized in that: The upper mold (1) is provided with a gate (3) inside, the lower mold (2) is provided with a working groove (4), an injection groove (5) is installed inside the working groove (4), a clamping plate (6) is fixedly connected to the outer side of the injection groove (5), a pulling cover (7) is fixedly connected to the outer side of the clamping plate (6), a connecting plate (8) is fixedly connected to the outer side of the connecting plate (8), a conduit (9) is fixedly connected to the outer side of the connecting plate (8), a positioning rod (10) is movably connected inside the conduit (9), a limiting block (11) is fixedly connected to the outer side of the positioning rod (10), a compression spring (12) is fixedly connected to the inner side of the limiting block (11), and a groove (13) is provided inside the lower mold (2).

2. A precision injection mold hot runner system according to claim 1, characterized in that: The lower mold (2) is rotatably connected to a rotating rod (14) inside, the rotating rod (14) is fixedly connected to a stabilizing plate (15) outside, the stabilizing plate (15) is fixedly connected to a transmission tube (16) outside, the transmission tube (16) is rotatably connected to a rotating rod (17) inside, the rotating rod (17) is fixedly connected to a connecting rod (18) outside, the connecting rod (18) is fixedly connected to a threaded cover (19) outside, and a threaded hole (20) is provided inside the lower mold (2).

3. A hot runner system for precision injection mold according to claim 1, characterized in that: The upper mold (1) and the lower mold (2) are of the same size, and the gate (3) is located directly above the injection groove (5).

4. The hot runner system for precision injection mold according to claim 1, characterized in that: The injection molding groove (5) is installed inside the working groove (4) through a clamping plate (6), and the connecting plates (8) are symmetrically arranged on the outside of the clamping plate (6).

5. The hot runner system for precision injection mold according to claim 1, characterized in that: The positioning rod (10) is located outside the groove (13), and one end of the compression spring (12) away from the limiting block (11) is fixedly connected to the outside of the guide tube (9).

6. A hot runner system for precision injection mold according to claim 2, characterized in that: The stabilizing plate (15) is movably connected to the outer side of the lower mold (2) via a rotating rod (14), and the stabilizing plate (15) is symmetrically distributed on the outer side of the lower mold (2).

7. A precision injection mold hot runner system according to claim 2, characterized in that: The threaded cover (19) is movably connected to the outer side of the stabilizing plate (15) through a rotating rod (17) and a connecting rod (18), and the threaded cover (19) and the threaded hole (20) are meshed with each other.

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