Hot runner mold for injection molding

Abstract

The utility model discloses a hot runner mold for injection molding. The hot runner mold comprises a hot runner mold body, wherein the hot runner mold body comprises an upper sealing plate and a lower sealing plate; the main runner nozzle is embedded and fixed in the middle of the upper sealing plate; the supporting template is fixed on the lower side of the upper sealing plate; the hot runner cavity plate is embedded in the concave area of the supporting template; the bottom of the shunting nozzle penetrates into the hot runner cavity plate, and the top of the shunting nozzle is connected with a plurality of exhaust pipes; the fixed mold plate is attached to the lower side of the supporting mold plate; and the movable mold plate is arranged opposite to the fixed mold plate. According to the utility model, a hot runner system of the hot runner mold body is formed by arranging the main runner nozzle, the hot runner cavity plate and the shunting nozzles, so that uniform heating is realized, the temperature in the mold is ensured to be consistent, the yield of products is further improved, and the material loss is reduced in a disguised manner; the double-mold-core structure is arranged and used for continuous injection molding of the hot runner mold body, and the machining period is shortened.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molds, in particular to a hot runner mold for injection molding. Background Art

[0002] Injection molds are tools for producing plastic products. They inject the heated and melted material into the mold cavity under high pressure, and after cooling and solidification, the molded product is obtained. As an important component of the hot runner, it plays an indispensable role.

[0003] The existing public patent (publication number CN 217047324 U) discloses a new type of hot runner for injection molds, which relates to the field of injection mold technology. Among them, the new type of hot runner for injection molds includes: a movable mold plate; a fixed mold plate, which is arranged opposite to the movable mold plate; a fixed mold plate, which is fixedly connected to the fixed mold plate through a pad; a runner plate, which is arranged in a hollow accommodating cavity formed by the fixed mold plate, the pad and the fixed mold plate; a main flow nozzle, which is arranged at the center of the fixed mold plate and the runner plate; and a diverter nozzle, which is fixedly arranged on the fixed mold plate and corresponds to the discharge port of the runner plate; a hot runner is formed by the cooperation of the movable mold plate, the fixed mold plate and the runner plate, and injection molding is performed through the main flow nozzle and the diverter nozzle respectively. The utility model solves the problems that in actual production and use, hot runner molds have complex structures, high design labor costs, long delivery cycles, and waste products are easily produced during the injection molding process due to excessively high or low plastic melt temperatures.

[0004] The above hot runner mold is not convenient for continuous injection molding, and its processing efficiency needs to be further improved. To this end, we provide a hot runner mold for injection molding to solve the above problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model is a hot runner mold for injection molding, comprising a hot runner mold body: the hot runner mold body comprises:

[0007] Upper sealing plate;

[0008] A main channel nozzle is embedded and fixed in the middle of the upper sealing plate;

[0009] A supporting template is fixed to the lower side of the upper sealing plate;

[0010] A hot runner cavity plate, embedded in the recessed area of ​​the support template;

[0011] A split flow nozzle, the bottom of which is inserted into the hot runner cavity plate and the top of which is connected to a plurality of exhaust pipes;

[0012] A fixed template, arranged in close contact with the lower side of the supporting template;

[0013] The movable template is arranged opposite to the fixed template.

[0014] The utility model is further configured that a mold foot is arranged at the lower part of the movable mold plate, a top plate is arranged inside the mold foot, and a top rod is arranged in cooperation with the top plate.

[0015] The utility model is further configured that a connecting hole is provided on the side of the upper sealing plate, and the wiring of the external heating component passes through the connecting hole to connect to the hot runner cavity plate.

[0016] The utility model is further configured that a sliding seat is fixed on the side of the movable template, a locking seat is slidably arranged inside the sliding seat, and a wedge block is co-arranged with the locking seat, and the wedge block is arranged on the lower side edge of the fixed template.

[0017] The utility model is further configured that a water cooling pipe is passed through the interior of the upper sealing plate, and the water cooling pipe is located outside the hot runner cavity plate.

[0018] The utility model is further configured such that the movable mold plate has a built-in lower mold core, the lower mold core is relatively matched with an upper mold core, the injection hole arranged at the corner of the upper mold core cooperates with the diversion nozzle, and a positioning block is matched on the peripheral side of the lower mold core.

[0019] The utility model is further configured that a guide rod is passed through the edge of the upper sealing plate, and the guide rod is passed through the support template, the fixed template, the movable template and the shaft sleeve embedded in the corner of the edge of the mold foot.

[0020] The utility model has the following beneficial effects:

[0021] The utility model forms a hot runner system of the hot runner mold body by arranging a main flow channel nozzle, a hot runner cavity plate and a branch flow nozzle. The hot runner cavity plate is connected to an external control structure to achieve a uniform heating effect, thereby ensuring that the temperature inside the mold remains consistent, thereby improving the product yield and reducing material loss in disguise. The exhaust pipe is arranged to exhaust gas during the injection molding process and reduce bubbles in the injection molded product. The injection mold core structure of the product is composed of an upper mold core and a lower mold core. The double mold core structure is arranged for continuous injection molding of the hot runner mold body, thereby shortening the processing cycle.

[0022] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of one side of the overall structure of the utility model.

[0024] Figure 2It is a schematic diagram of the other side of the overall structure of the utility model.

[0025] Figure 3 It is a schematic diagram of the installation of the hot runner cavity plate in the utility model.

[0026] Figure 4 It is a schematic diagram of the cooperation between the diverter nozzle and the hot runner cavity plate in the utility model.

[0027] Figure 5 It is a schematic diagram of the internal structure of the movable template in the utility model.

[0028] Figure 6 It is a schematic diagram of the lower mold core structure in the utility model.

[0029] Figure numerals: 1. hot runner mold body; 11. mold foot; 12. top plate; 13. movable mold plate; 14. fixed mold plate; 15. locking seat; 16. support mold plate; 17. connecting hole; 18. upper sealing plate; 19. water cooling pipe; 110. main channel nozzle; 111. diverter nozzle; 112. hot runner cavity plate; 113. bushing; 114. exhaust pipe; 115. upper mold core; 116. lower mold core; 117. slide seat; 118. positioning block; 119. wedge block. DETAILED DESCRIPTION

[0030] 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.

[0031] Example

[0032] See also Figure 1-6 The utility model is a hot runner mold for injection molding, including a hot runner mold body 1, the hot runner mold body 1 includes: an upper sealing plate 18; a main channel nozzle 110, embedded and fixed in the middle of the upper sealing plate 18; a support template 16, fixed to the lower side of the upper sealing plate 18; a hot runner cavity plate 112, embedded and arranged in the recessed area of ​​the support template 16; a diversion nozzle 111, the bottom of which is penetrated into the hot runner cavity plate 112, and the top is connected to a plurality of exhaust pipes 114; a fixed template 14, fitted and arranged on the lower side of the support template 16; a movable template 13, arranged opposite to the fixed template 14.

[0033] Specifically, in the hot runner mold for injection molding proposed in the present application, the main channel nozzle 110, the hot runner cavity plate 112 and the branch nozzle 111 constitute the hot runner system of the hot runner mold body 1. The hot runner cavity plate 112 is connected to the external control structure to achieve the effect of uniform heating, thereby ensuring that the temperature inside the mold remains consistent, thereby improving the product yield and reducing material loss in disguise. The exhaust pipe 114 is set for exhaust during the injection molding process to reduce bubbles in the injection molded product. The injection mold core structure of the product is composed of an upper mold core 115 and a lower mold core 116. The double mold core structure is set for continuous injection molding of the hot runner mold body 1, thereby shortening the processing cycle.

[0034] Furthermore, a mold foot 11 is provided at the lower portion of the movable mold plate 13, a top plate 12 is provided inside the mold foot 11, and a top rod is provided in cooperation with the top plate 12. A connecting hole 17 is provided on the side of the upper sealing plate 18, and the wiring of the external heating component passes through the connecting hole 17 to connect to the hot runner cavity plate 112. A sliding seat 117 is fixed to the side of the movable mold plate 13, and a locking seat 15 is slidably provided inside the sliding seat 117, and a wedge block 119 is provided in cooperation with the locking seat 15, and the wedge block 119 is arranged on the lower side edge of the fixed mold plate 14, and a water cooling pipe 19 is passed through the interior of the upper sealing plate 18, and the water cooling pipe 19 is located outside the hot runner cavity plate 112.

[0035] Specifically, in the hot runner mold body 1, the top plate 12 cooperates with the lifting and lowering of the ejector rod for subsequent demolding. The connection line of the external heating component is passed through the connecting hole 17 and is connected to the hot runner cavity plate 112 to achieve a uniform heating effect, thereby ensuring that the temperature inside the mold remains consistent, thereby improving the product yield. The slide seat 117 is used for the installation of the locking seat 15, and the locking seat 15 cooperates with the wedge block 119 to achieve relative fixation of the fixed mold plate 14 and the movable mold plate 13. The water-cooling pipe 19 is connected to the external water-cooling delivery structure for temperature control and heat dissipation of the hot runner cavity plate 112.

[0036] Furthermore, the movable mold plate 13 has a built-in lower mold core 116, and the lower mold core 116 is relatively matched with the upper mold core 115. The injection hole set at the corner of the upper mold core 115 cooperates with the diversion nozzle 111, and the peripheral side of the lower mold core 116 is matched with a positioning block 118.

[0037] Specifically, the upper mold core 115 and the lower mold core 116 form an injection mold core structure of the product, and cooperate with the injection hole to realize the injection of glue inside. The positioning block 118 is used for positioning the injection mold core.

[0038] Furthermore, a guide rod is provided on the edge of the upper sealing plate 18 , and the guide rod is provided in the support template 16 , the fixed template 14 , the movable template 13 and the shaft sleeve 113 embedded in the corner of the edge of the mold foot 11 .

[0039] Specifically, the guide rod is inserted into the shaft sleeve 113 to fix the relative positions of the support template 16 , the fixed template 14 , the movable template 13 and the mold foot 11 , thereby improving the overall stability of the hot runner mold body 1 .

Claims

1. A hot runner mold for injection molding, comprising a hot runner mold body (1), characterized in that: The hot runner mold body (1) comprises: Upper sealing plate (18); A main channel nozzle (110) is embedded and fixed in the middle of the upper sealing plate (18); A supporting template (16) fixed to the lower side of the upper sealing plate (18); A hot runner cavity plate (112), embedded in a recessed area of ​​the support template (16); A flow splitting nozzle (111), the bottom of which is inserted into the hot runner cavity plate (112) and the top of which is connected to a plurality of exhaust pipes (114); A fixed template (14) is arranged to fit the lower side of the supporting template (16); The movable platen (13) is arranged opposite to the fixed platen (14).

2. The hot runner mold for injection molding according to claim 1, characterized in that: A die foot (11) is provided at the lower part of the movable die plate (13), a top plate (12) is provided inside the die foot (11), and a top rod is provided in cooperation with the top plate (12).

3. The hot runner mold for injection molding according to claim 1, characterized in that: A connection hole (17) is provided on the side of the upper sealing plate (18), and the wiring of the external heating component passes through the connection hole (17) to connect to the hot runner cavity plate (112).

4. The hot runner mold for injection molding according to claim 1, characterized in that: A sliding seat (117) is fixed to the side of the movable platen (13), a locking seat (15) is slidably arranged inside the sliding seat (117), and a wedge block (119) is arranged in cooperation with the locking seat (15), and the wedge block (119) is arranged on the lower side edge of the fixed platen (14).

5. The hot runner mold for injection molding according to claim 1, characterized in that: A water cooling pipe (19) is provided inside the upper sealing plate (18), and the water cooling pipe (19) is located outside the hot runner cavity plate (112).

6. The hot runner mold for injection molding according to claim 1, characterized in that: The movable mold plate (13) has a built-in lower mold core (116), and the lower mold core (116) is provided with an upper mold core (115) in a corresponding manner, wherein the injection hole provided at the corner of the upper mold core (115) cooperates with the diversion nozzle (111), and a positioning block (118) is provided on the peripheral side of the lower mold core (116).

7. The hot runner mold for injection molding according to claim 1, characterized in that: A guide rod is provided through the edge of the upper sealing plate (18), and the guide rod is provided through the support template (16), the fixed template (14), the movable template (13) and a shaft sleeve (113) embedded in the corner of the edge of the mold foot (11).

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