T-shaped cold runner for injection mold

Abstract

The utility model relates to a T type cold runner for injection mold, including T type runner board, the lower mode plate of T type runner board below is provided with, the matching male die and female die of T type runner board both sides symmetry are provided with on the lower mode plate, the glue component that goes in is provided with in T type runner board, and the glue component that goes in includes T type runner, and the short runner is connected between T type runner and female die, and the drive assembly and the opening and closing assembly under drive assembly of setting up between T type runner and short runner, the thermostatic assembly is provided with in T type runner board, and the glue component that goes in is used for with the molten material through T type runner and short runner enters between male die and female die, and the opening and closing assembly is used for switching the opening and closing state between T type runner and short runner, and the thermostatic assembly is used for controlling T type runner temperature, saves raw material, and simultaneously T type runner makes the molten material can flow to simultaneously between multiple female die and male die and carries out the shaping.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and more specifically to a T-type cold runner for injection molds. Background Technology

[0002] Cold runners are a common type of runner system in injection molds. They maintain a low temperature through cooling circulation, allowing the molten material to flow into the molding cavity for final heating and solidification. Currently, in most injection molds, the molten material passes through a relatively long runner connected to the molding cavity. As a result, when the molten material cools, the molten material in the runner also cools simultaneously, leading to material waste. Furthermore, poor cooling during injection molding results in poor molten material flowability and inconsistent finished product quality. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a T-shaped cold runner for injection molds. By connecting the T-shaped runner to the cavity mold through a short runner, raw materials are saved. At the same time, the T-shaped runner allows molten material to flow simultaneously between multiple cavities and punches for molding. By placing the inlet and outlet pipes on both sides of the T-shaped runner for cooling, the cooling effect is ensured.

[0004] The technical solution of this utility model is as follows: A T-shaped cold runner for injection molds includes a T-shaped runner plate, a lower mold plate below the T-shaped runner plate, and matching punches and dies symmetrically arranged on both sides of the lower mold plate along the T-shaped runner plate. A sprue assembly is provided within the T-shaped runner plate, the sprue assembly including a T-shaped runner, a short runner connecting the T-shaped runner and the die, a drive assembly and an opening / closing assembly driven by the drive assembly between the T-shaped runner and the short runner, and a temperature control assembly within the T-shaped runner plate. The sprue assembly is used to allow molten material to enter between the punch and die through the T-shaped runner and the short runner. The opening / closing assembly is used to switch the opening / closing state between the T-shaped runner and the short runner. The temperature control assembly is used to control the temperature of the T-shaped runner.

[0005] As a preferred embodiment, the glue injection assembly further includes a glue injection insert fixedly disposed on the T-shaped flow channel plate and a glue injection port formed on the glue injection insert, wherein the glue injection port is connected to the T-shaped flow channel.

[0006] As a preferred embodiment, the drive assembly includes a hydraulic cylinder fixedly mounted on the lower template and an inclined block fixedly mounted on the output shaft of the hydraulic cylinder.

[0007] As a preferred embodiment, the opening and closing assembly includes a base fixedly mounted on the lower template, a lifting block slidably mounted within the base, an inclined surface formed on the lifting block, a top rod fixedly mounted on the lifting block, a fixing sleeve fixedly mounted on the T-shaped flow channel, and a connecting groove formed on the T-shaped flow channel plate. The top rod is slidably engaged with the fixing sleeve, the short flow channel is connected to the connecting groove, the top rod engages with the connecting groove, and the inclined block engages with the inclined surface.

[0008] As a preferred embodiment, the constant temperature component includes a water inlet and a water outlet symmetrically arranged on the inlet insert, a water inlet pipe fixedly arranged on the water inlet, a connecting pipe fixedly arranged on the water inlet pipe, and a water outlet pipe fixedly arranged between the connecting pipe and the water outlet.

[0009] As a preferred embodiment, both the inlet pipe and the outlet pipe are located on both sides of the T-shaped flow channel.

[0010] The beneficial effects of this utility model are as follows: 1. This utility model is equipped with a short flow channel. The short flow channel between the T-shaped flow channel and the molding cavity can reduce the waste of raw materials and speed up the molding process.

[0011] 2. This utility model is also equipped with an opening and closing component and a constant temperature component. The opening and closing state between the T-shaped flow channel and the connecting groove is switched by the lifting and lowering of the top rod to keep the product specifications consistent. At the same time, the T-shaped flow channel is kept cooled by cooling water to prevent the molten material from solidifying.

[0012] In summary, this invention has the advantages of good cooling effect and high injection efficiency, and is suitable for the field of injection mold technology. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings: Figure 1 This is a schematic diagram of a T-type cold runner for injection molds; Figure 2 This is a schematic diagram of the short flow channel structure; Figure 3 This is a schematic diagram of the opening / closing component and the temperature control component. Figure 4 This is a schematic diagram of the drive component. Figure 5 This is a schematic diagram showing the state of the molten material flowing in the T-shaped flow channel; Figure 6 This is a schematic diagram showing the state of molten material flowing into the short channel through the connecting groove. Figure 7 for Figure 6 Enlarged view of point A in the middle; Figure 8 This is a schematic diagram showing the working state of the temperature control component. Figure reference numerals: 1. T-type runner plate, 2. Lower template, 3. Punch, 4. Die, 5. Inlet assembly, 51. T-type runner, 52. Inlet insert, 53. Inlet port, 6. Short runner, 7. Drive assembly, 71. Hydraulic cylinder, 72. Inclined block, 8. Opening and closing assembly, 81. Base, 83. Lifting block, 84. Inclined surface, 85. Push rod, 86. Fixing sleeve, 87. Connecting groove, 9. Thermostatic assembly, 91. Inlet, 92. Outlet, 93. Inlet pipe, 94. Connecting pipe, 95. Outlet pipe. Detailed Implementation

[0014] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Example 1

[0015] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0016] like Figure 1 and Figure 8 As shown, a T-shaped cold runner for injection molds includes a T-shaped runner plate 1, a lower mold plate 2 below the T-shaped runner plate 1, and matching punches 3 and dies 4 symmetrically arranged on both sides of the lower mold plate 2 along the T-shaped runner plate 1. A sprue assembly 5 is provided inside the T-shaped runner plate 1. The sprue assembly 5 includes a T-shaped runner 51, a short runner 6 connecting the T-shaped runner 51 and the die 4, a drive assembly 7 and an opening / closing assembly 8 driven by the drive assembly 7 are provided between the T-shaped runner 51 and the short runner 6, and a temperature control assembly 9 is provided inside the T-shaped runner plate 1. The sprue assembly 5 is used to allow molten material to enter between the punches 3 and dies 4 through the T-shaped runner 51 and the short runner 6. The opening / closing assembly 8 is used to switch the opening and closing states between the T-shaped runner 51 and the short runner 6. The temperature control assembly 9 is used to control the temperature of the T-shaped runner 51.

[0017] It is worth mentioning that, such as Figure 3 As shown, the injection assembly 5 also includes an injection insert 52 fixedly mounted on the T-shaped runner plate 1 and an injection port 53 opened on the injection insert 52. The injection port 53 is connected to the T-shaped runner 51. In use, the molten material flows into the T-shaped runner 51 through the injection port 53 and flows into the molding cavity between several punches 3 and dies 4 for molding, which improves the injection molding efficiency.

[0018] It needs to be emphasized that, such as Figure 4 As shown, the drive assembly 7 includes a hydraulic cylinder 71 fixedly mounted on the lower template 2 and an inclined block 72 fixedly mounted on the output shaft of the hydraulic cylinder 71.

[0019] It should be further explained that, such as Figure 5 and Figure 6 As shown, the opening and closing assembly 8 includes a base 81 fixedly mounted on the lower template 2, a lifting block 83 slidably mounted within the base 81, an inclined surface 84 formed on the lifting block 83, a push rod 85 fixedly mounted on the lifting block 83, a fixing sleeve 86 fixedly mounted on the T-shaped flow channel 51, and a connecting groove 87 formed on the T-shaped flow channel plate 1. The push rod 85 and the fixing sleeve 86 are slidably engaged. The short flow channel 6 is connected to the connecting groove 87. The push rod 85 engages with the connecting groove 87. The inclined block 72 engages with the inclined surface 84. In use, the hydraulic cylinder 71 pushes the inclined block 72, and the inclined block 72 engages with the inclined surface 84. The inclined plane 84 cooperates to push the lifting block 83 to rise and fall. The lifting block 83 drives the push rod 85 to slide within the fixed sleeve 86. When the push rod 85 descends to below the connection between the fixed sleeve 86 and the T-shaped runner 51, the molten material stops injection. Conversely, when it rises to above the connection between the fixed sleeve 86 and the T-shaped runner 51, the molten material continues injection. The molten material enters the short runner 6 on both sides through the connecting groove 87, and finally flows into the molding cavity for heating and molding, so that the product specifications are consistent. At the same time, the short runner 6 set between the molding cavity and the T-shaped runner 51 can reduce material waste.

[0020] It is worth mentioning that, such as Figure 8 As shown, the constant temperature component 9 includes a water inlet 91 and a water outlet 92 symmetrically arranged on the inlet insert 52, a water inlet pipe 93 fixedly arranged on the water inlet 91, a connecting pipe 94 fixedly arranged on the water inlet pipe 93, and a water outlet pipe 95 fixedly arranged between the connecting pipe 94 and the water outlet 92. A water circulation cooling device is connected to the water inlet 91 and the water outlet 92 to keep the cold water at the set temperature and circulate it. In use, the cooling water flows into the water inlet pipe 93 and the connecting pipe 94 through the water inlet 91, and then flows through the water outlet pipe 95 and the water outlet 92 for cooling circulation, so that the cooling water always cools the T-shaped flow channel 51.

[0021] Furthermore, such as Figure 8 As shown, both the inlet pipe 93 and the outlet pipe 95 are located on both sides of the T-shaped flow channel 51 to improve the cooling effect of the T-shaped flow channel.

[0022] Work process After the punch 3 and die 4 are set up, the molten material flows into the T-shaped runner 51 through the inlet 53. The hydraulic cylinder 71 pushes the inclined block 72, which cooperates with the inclined surface 84 to push the lifting block 83 to rise and fall. The lifting block 83 drives the ejector rod 85 to slide in the fixed sleeve 86. When the ejector rod 85 descends to below the connection between the fixed sleeve 86 and the T-shaped runner 51, the molten material stops injection. Conversely, when it rises to above the connection between the fixed sleeve 86 and the T-shaped runner 51, the molten material continues injection. The molten material enters the short runner 6 on both sides through the connecting groove 87, and finally flows into the molding cavity for heating and molding. Cooling water flows into the inlet pipe 93 and the connecting pipe 94 through the inlet 91, and then flows from the outlet pipe 95 through the outlet 92 for cooling circulation, so that the T-shaped runner 51 is always cooled.

[0023] In the description of this utility model, it should be understood that the terms "front and back", "left and right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0024] Of course, those skilled in the art should understand that the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be understood as a limitation on the quantity.

[0025] The above description, in conjunction with the accompanying drawings, is merely a preferred embodiment of the present utility model. However, the present utility model is not limited to the above-described embodiments. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present utility model. These modifications and improvements should also be considered within the scope of protection of the present utility model and will not affect the effectiveness and practicality of the implementation of the present utility model.

Claims

1. A T-shaped cold runner for injection molds, comprising a T-shaped runner plate (1), characterized in that: A lower template (2) is provided below the T-shaped runner plate (1). Matching punches (3) and dies (4) are symmetrically arranged on both sides of the T-shaped runner plate (1) on the lower template (2). A glue injection assembly (5) is provided inside the T-shaped runner plate (1). The glue injection assembly (5) includes a T-shaped runner (51). A short runner (6) connects the T-shaped runner (51) and the die (4). A drive is provided between the T-shaped runner (51) and the short runner (6). The moving component (7) and the opening and closing component (8) driven by the driving component (7) are provided. The T-shaped flow channel plate (1) is equipped with a constant temperature component (9). The glue injection component (5) is used to introduce the molten material into the space between the punch (3) and the die (4) through the T-shaped flow channel (51) and the short flow channel (6). The opening and closing component (8) is used to switch the opening and closing state between the T-shaped flow channel (51) and the short flow channel (6). The constant temperature component (9) is used to control the temperature of the T-shaped flow channel (51).

2. The T-type cold runner for injection molds according to claim 1, characterized in that: The glue injection assembly (5) also includes a glue injection insert (52) fixedly mounted on the T-shaped flow channel plate (1) and a glue injection port (53) opened on the glue injection insert (52), wherein the glue injection port (53) is connected to the T-shaped flow channel (51).

3. The T-shaped cold runner for injection molds according to claim 1, characterized in that: The drive assembly (7) includes a hydraulic cylinder (71) fixedly mounted on the lower template (2) and a wedge block (72) fixedly mounted on the output shaft of the hydraulic cylinder (71).

4. A T-shaped cold runner for injection molds according to claim 3, characterized in that: The opening and closing assembly (8) includes a base (81) fixedly mounted on the lower template (2), a lifting block (83) slidably mounted in the base (81), an inclined surface (84) opened on the lifting block (83), a top rod (85) fixedly mounted on the lifting block (83), a fixing sleeve (86) fixedly mounted on the T-shaped flow channel (51), and a connecting groove (87) opened on the T-shaped flow channel plate (1). The top rod (85) and the fixing sleeve (86) are slidably engaged. The short flow channel (6) is connected to the connecting groove (87). The top rod (85) and the connecting groove (87) are engaged. The inclined block (72) and the inclined surface (84) are engaged.

5. A T-shaped cold runner for injection molds according to claim 2, characterized in that: The constant temperature component (9) includes an inlet (91) and an outlet (92) symmetrically arranged on the inlet insert (52), an inlet pipe (93) fixedly arranged on the inlet (91), a connecting pipe (94) fixedly arranged on the inlet pipe (93), and an outlet pipe (95) fixedly arranged between the connecting pipe (94) and the outlet (92).

6. A T-shaped cold runner for injection molds according to claim 5, characterized in that: Both the inlet pipe (93) and the outlet pipe (95) are located on both sides of the T-shaped flow channel (51).

Images