Three-way pipe fitting injection mold

Abstract

The utility model discloses a three-way pipe fitting injection mold which comprises a lower mold, a lower mold cavity is formed in the top of the lower mold, a mold core structure is arranged in the lower mold cavity in a sliding mode, the mold core structure comprises a first mold core and a second mold core which are perpendicular to each other, and a reset part is arranged at the bottom of the mold core structure. The reset part comprises a second spring used for pulling the mold core structure out of the lower mold cavity. The upper mold is arranged above the lower mold, and an upper mold cavity is formed in the position, corresponding to the lower mold cavity, of the upper mold. The mold has the beneficial effects that the first positioning inclined plate and the second positioning inclined plate are utilized to ensure that the first mold core and the second mold core accurately move to required positions, so that deviation and defects in production can be reduced; the size and the shape of each product are ensured to meet strict quality standards; the automatic reset function of the mold core is achieved through the second spring, the production process is simplified, and the risk of mechanical faults is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of three-way pipe fitting processing, in particular to a three-way pipe fitting injection mold. Background Art

[0002] Tee pipe fittings refer to a type of pipe connector, which is used at the branch pipe of the main pipe. In the production process of tee pipe fittings, an injection mold is required. In the use process of the tee pipe fitting injection mold, a demoulding structure is required to improve the use effect of the tee pipe fitting injection mold. For example: China Patent Authorization Announcement No. CN214645397U discloses an injection tee pipe fitting mold, which belongs to the field of injection mold technology. The core and flow channel of the mold are located between the upper cavity and the lower cavity. The ends of each three cores are butted in pairs to form three cavities of the tee pipe fitting. The core The other end of the mold is connected to the slide, which is located between the fixed mold frame and the movable mold frame. Multiple mold cavities are formed between the upper mold cavity, the lower mold cavity and the docking core, which are arranged in a spatially staggered manner. The runner has a feed port and multiple discharge ports, which are respectively connected to multiple mold cavities. The ejector passes through the movable mold frame and the lower mold cavity and is vertically connected to the runner and the three-way pipe fitting respectively. The slide is provided with an inclined guide column, which penetrates the slide, and its front end is fixedly connected to the fixed mold frame, and its rear end is inclined outward. When the inclined guide column is withdrawn, the slide moves out of the core; the three-way pipe fitting and the runner formed by injection molding are ejected by the ejector. The utility model realizes a one-mold multi-cavity structure design, reduces the layout area, and improves production efficiency.

[0003] The above-mentioned prior art solutions have the following defects: the mold core cannot be automatically and quickly reset when the three-way pipe fitting is molded, and the mold core cannot be automatically separated from the product when the mold is opened, which is not convenient for subsequent demolding of the ejector pin. Therefore, the utility model provides a three-way pipe fitting injection mold to solve the above-mentioned problems. Utility Model Content

[0004] The utility model aims to provide a three-way pipe fitting injection mold to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a three-way pipe fitting injection mold, comprising:

[0006] A lower mold, wherein a lower mold cavity is provided at the top of the lower mold, a mold core structure is slidably provided inside the lower mold cavity, the mold core structure comprises a first mold core and a second mold core which are vertically arranged to each other, a reset portion is provided at the bottom of the mold core structure, and the reset portion comprises a second spring for withdrawing the mold core structure from the lower mold cavity;

[0007] The upper mold is placed above the lower mold, and an upper mold cavity is arranged at a position of the upper mold corresponding to the lower mold cavity. A first positioning inclined plate for driving the second mold core to reset and a second positioning inclined plate for driving the first mold core to reset are arranged on one side of the upper mold.

[0008] Preferably, it further comprises a base, which is fixedly connected to the bottom of the lower mold, the inner side of the base is fixedly connected to a limiting column, and the outer side of the limiting column is slidably mounted with a pushing plate.

[0009] Preferably, a first spring is sleeved on the outer side of the limiting column and above the pushing plate, and a plurality of ejector pins are fixedly connected to the top of the pushing plate. The ejector pins extend into the lower mold cavity for product demoulding.

[0010] Preferably, the lower mold cavity is a T-shaped three-way structure and is provided with two of them, and the two lower mold cavities are symmetrically arranged about the center line of the lower mold.

[0011] Preferably, the second mold core and the first mold core are both slidably connected to the lower mold cavity, and an extrusion inclined plate used in conjunction with the first positioning inclined plate is fixedly connected between two adjacent second mold cores.

[0012] Preferably, the end of the first mold core is an inclined surface used in conjunction with the second positioning inclined plate.

[0013] Preferably, the reset portion comprises a limit rod slidably arranged inside the lower die, the ends of the extrusion inclined plate and the first die core are fixedly connected to the limit rod, and a second spring is sleeved on the outer side of the limit rod.

[0014] Preferably, guide rods are fixedly connected to the four corners of the top of the lower mold, and the bottom of the upper mold is provided with guide holes used in conjunction with the guide rods.

[0015] Compared with the prior art, the beneficial effects of the utility model are: utilizing the first positioning ramp plate and the second positioning ramp plate to ensure that the first mold core and the second mold core are accurately moved to the desired positions, which helps to reduce deviations and defects in production and ensure that the size and shape of each product meet strict quality standards; the automatic reset function of the mold core is realized by the second spring, which simplifies the production process and reduces the risk of mechanical failure, and the automatic reset reduces the dependence on mechanical operation, and the automatic reset and automatic demolding reduce the operator's manual intervention, which not only reduces labor intensity, but also reduces the possibility of operating errors, thereby improving production consistency and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model when the mold is split;

[0017] Figure 2 It is a structural schematic diagram of the upper mold of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the lower mold of the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the utility model when the mold is closed.

[0020] In the figure: 1. upper mold; 2. lower mold; 3. base; 4. first positioning inclined plate; 5. second positioning inclined plate; 6. limiting column; 7. first spring; 8. lower mold cavity; 9. first mold core; 10. second mold core; 11. limiting rod; 12. second spring; 13. ejector pin; 14. extrusion inclined plate; 15. push plate; 16. guide rod; 17. upper mold cavity. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1 , 2 As shown in Figures 3 and 4, the utility model provides a technical solution: a three-way pipe fitting injection mold, comprising: a lower mold 2, a lower mold cavity 8 is opened on the top of the lower mold 2, a core structure is slidably arranged inside the lower mold cavity 8, the core structure comprises a first mold core 9 and a second mold core 10 which are arranged vertically to each other, a reset portion is arranged at the bottom of the mold core structure, the reset portion comprises a second spring 12 for withdrawing the core structure from the lower mold cavity 8; an upper mold 1 is installed above the lower mold 2, an upper mold cavity 17 is arranged at the position of the upper mold 1 corresponding to the lower mold cavity 8, a glue injection cavity is formed between the lower mold cavity 8 and the upper mold cavity 17, a glue injection hole and a corresponding glue injection pipeline are arranged on the top of the upper mold 1, a first positioning inclined plate 4 for driving the second mold core 10 to reset and a second positioning inclined plate 5 for driving the first mold core 9 to reset are arranged on one side of the upper mold 1, and water transport holes are arranged inside the upper mold 1 and the lower mold 2 for cooling and molding the internal workpiece.

[0023] It should be noted that, in the present invention, when the upper mold 1 and the lower mold 2 are closed, the first positioning inclined plate 4 cooperates with the extrusion inclined plate 14, and the second positioning inclined plate 5 cooperates with the first mold core 9. Under the structure in which the first positioning inclined plate 4 and the second positioning inclined plate 5 are inclinedly arranged, the first positioning inclined plate 4 squeezes and pushes the extrusion inclined plate 14 during the downward movement, and the second mold core 10 is pushed to the middle part of the lower mold cavity 8 through the extrusion inclined plate 14, and the first mold core 9 is pushed to move to the middle part of the lower mold cavity 8 through the lower mold cavity 8. In this process, the first mold core 9 and the extrusion inclined plate 14 both apply pressure to the second spring 12. When the upper mold 1 and the lower mold 2 are closed, the lower mold cavity 8 and the upper mold cavity 17 form a complete glue injection cavity, and injection molding is performed through the glue injection port. After molding, the upper mold 1 and the lower mold 2 are separated, and the first positioning inclined plate 4 and the second positioning inclined plate 5 are moved to The first mold core 9 and the second mold core 10 move upward to cancel the pressure applied to the first mold core 9 and the second mold core 10. Under the action of the second spring 12, the first mold core 9 and the second mold core 10 are pulled out of the workpiece, and then demolding is achieved through the ejector pin 13. The first positioning ramp 4 and the second positioning ramp 5 are used to ensure that the first mold core 9 and the second mold core 10 are accurately moved to the desired position, which helps to reduce deviations and defects in production and ensure that the size and shape of each product meet strict quality standards. The automatic reset function of the mold core is achieved by the second spring 12, which simplifies the production process and reduces the risk of mechanical failure. The automatic reset reduces the dependence on mechanical operation. The automatic reset and automatic demolding reduce the operator's manual intervention, which not only reduces the labor intensity, but also reduces the possibility of operating errors, thereby improving the consistency and reliability of production.

[0024] See also Figure 1 , 4 As shown, it also includes a base 3, which is fixedly connected to the bottom of the lower mold 2. The inner side of the base 3 is fixedly connected to a limiting column 6, and a push plate 15 is slidably installed on the outer side of the limiting column 6. A first spring 7 is sleeved on the outer side of the limiting column 6 and above the push plate 15. A plurality of ejector pins 13 are fixedly connected to the top of the push plate 15. The ejector pins 13 extend into the lower mold cavity 8 for product demoulding.

[0025] It should be noted that the utility model drives the push plate 15 to move upward along the limit column 6 through a hydraulic cylinder or other driving components. The push plate 15 installed on the outside of the limit column can slide smoothly. The elastic force provided by the first spring 7 ensures that the push plate 15 can automatically reset when not subjected to external force. The multiple ejector pins 13 on the top of the push plate accurately enter the lower mold cavity 8 to ensure that the finished product can be demolded smoothly without damaging the product surface or generating unnecessary defects. The combination of the push plate and the ejector pin ensures automatic demolding after each injection molding is completed.

[0026] See also Figure 1 , 3As shown, the lower mold cavity 8 is a T-shaped three-way structure and is provided with two of them. The two lower mold cavities 8 are symmetrically arranged about the center line of the lower mold 2. The second mold core 10 and the first mold core 9 are both slidably connected to the lower mold cavity 8, and an extrusion inclined plate 14 used in conjunction with the first positioning inclined plate 4 is fixedly connected between two adjacent second mold cores 10. The end of the first mold core 9 is an inclined surface used in conjunction with the second positioning inclined plate 5.

[0027] It should be noted that the utility model can realize simultaneous injection molding of two products by setting up two lower mold cavities 8, thereby improving the production capacity of the products. The first mold core 9 and the second mold core 10 are both slidably connected to the lower mold cavity 8, so that the mold core can accurately slide into or out of the mold cavity during the injection molding process. The two second mold cores 10 can be driven to move toward the middle at the same time by the extrusion inclined plate 14, and the second positioning inclined plate 5 drives the first mold core 9 to move, thereby driving the mold core to perform precise displacement. The inclined plane mechanical principle is used to enhance the extrusion and positioning capabilities of the mold, thereby improving the accuracy and repeatability of the injection molding process.

[0028] See also Figure 3 As shown, the reset portion includes a limit rod 11 slidably disposed inside the lower mold 2 , the extrusion inclined plate 14 and the end of the first mold core 9 are fixedly connected to the limit rod 11 , and a second spring 12 is sleeved on the outer side of the limit rod 11 .

[0029] It should be noted that, in the utility model, when the first positioning inclined plate 4 and the second positioning inclined plate 5 drive the first mold core 9 and the second mold core 10 to move toward the middle, the extrusion inclined plate 14 and the first mold core 9 both push the limit rod 11 toward the inside of the lower mold 2, thereby compressing the second spring 12 in the process of pushing. When the first positioning inclined plate 4 and the second positioning inclined plate 5 are raised, the second spring 12 drives the second mold core 10 and the first mold core 9 to move outward, thereby pulling the first mold core 9 and the second mold core 10 out of the middle of the workpiece.

[0030] See also Figure 1 , 2 As shown in FIG. 3 , the four corners of the top of the lower mold 2 are fixedly connected with guide rods 16 , and the bottom of the upper mold 1 is provided with guide holes for use with the guide rods 16 .

[0031] It should be noted that, with the cooperation of the guide rod 16 and the guide hole, the utility model enables the upper mold 1 and the lower mold 2 to be precisely aligned. During this process, the lower mold cavity 8 and the upper mold cavity 17 form a complete mold cavity, which is convenient for injection molding. The second positioning inclined plate 5 and the first mold core 9 as well as the first positioning inclined plate 4 and the extrusion inclined plate 14 can be precisely aligned, which facilitates the rapid positioning of the mold core.

[0032] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0034] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0035] 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 three-way pipe fitting injection mold, characterized in that: include: A lower mold (2), wherein a lower mold cavity (8) is provided at the top of the lower mold (2), a mold core structure is slidably provided inside the lower mold cavity (8), the mold core structure comprises a first mold core (9) and a second mold core (10) which are arranged perpendicular to each other, a reset portion is provided at the bottom of the mold core structure, and the reset portion comprises a second spring (12) for withdrawing the mold core structure from the lower mold cavity (8); An upper mold (1), the upper mold (1) is placed above the lower mold (2), an upper mold cavity (17) is provided at a position of the upper mold (1) corresponding to the lower mold cavity (8), and a first positioning inclined plate (4) for driving the second mold core (10) to reset and a second positioning inclined plate (5) for driving the first mold core (9) to reset are provided on one side of the upper mold (1).

2. The three-way pipe fitting injection mold according to claim 1, characterized in that: It also comprises a base (3), the base (3) is fixedly connected to the bottom of the lower mold (2), the inner side of the base (3) is fixedly connected to a limiting column (6), and the outer side of the limiting column (6) is slidably mounted with a push plate (15).

3. The three-way pipe fitting injection mold according to claim 2, characterized in that: A first spring (7) is sleeved on the outer side of the limiting column (6) and located above the pushing plate (15). A plurality of ejector pins (13) are fixedly connected to the top of the pushing plate (15). The ejector pins (13) extend into the lower mold cavity (8) and are used for product demoulding.

4. The three-way pipe fitting injection mold according to claim 1, characterized in that: The lower mold cavity (8) is a T-shaped three-way structure and is provided with two of them. The two lower mold cavities (8) are symmetrically arranged about the center line of the lower mold (2).

5. The three-way pipe fitting injection mold according to claim 1, characterized in that: The second mold core (10) and the first mold core (9) are both slidably connected to the lower mold cavity (8), and an extrusion inclined plate (14) used in conjunction with the first positioning inclined plate (4) is fixedly connected between two adjacent second mold cores (10).

6. The three-way pipe fitting injection mold according to claim 5, characterized in that: The end of the first mold core (9) is an inclined surface used in conjunction with the second positioning inclined plate (5).

7. The three-way pipe fitting injection mold according to claim 6, characterized in that: The reset portion comprises a limit rod (11) slidably arranged inside the lower mold (2), the ends of the extrusion inclined plate (14) and the first mold core (9) are both fixedly connected to the limit rod (11), and a second spring (12) is sleeved on the outer side of the limit rod (11).

8. The three-way pipe fitting injection mold according to claim 1, characterized in that: The four corners of the top of the lower mold (2) are fixedly connected with guide rods (16), and the bottom of the upper mold (1) is provided with guide holes used in conjunction with the guide rods (16).

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