A 90-degree plastic elbow production die structure

Abstract

The utility model discloses a 90 degree plastic elbow production dynamic mode structure, including square mould body, four upper and lower, left and right symmetrical elbow cavity of setting in mould body center, the part of four of mould body upper and lower left and right with elbow cavity correspondence all are provided with movable slot, the fixed guide pillar of movable slot, and movable slot swing joint has the movable cover plate of sliding sleeve in the guide pillar, and the movable cover plate fixedly has the mould core of movable insertion elbow cavity one side of corresponding elbow cavity, the position of mould body all are fixed with double -acting pneumatic cylinder at four around corresponding movable cover plate, and the piston rod of double -acting pneumatic cylinder is linked with movable cover plate. The utility model air pump through a main pipeline can drive four double -acting pneumatic cylinder simultaneously, drive eight mould cores synchronous movement, thereby realize the effect of one drags eight, not only simplify mould structure and pipeline structure simultaneously, convenient maintenance and overhauling, and core pulling action is faster and consistent, avoid multiple mould core movement to have delay each other, thereby improve efficiency.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to a moving mold structure for producing 90-degree plastic elbows. Background Technology

[0002] The moving mold for a 90-degree plastic elbow is a type of mold used in the injection molding production of plastic elbows and is also a core component in the production of plastic elbows. During the production of plastic elbows, two moving molds are combined. The moving mold contains a cavity and a movable core. The gap between the core and the cavity forms the three-dimensional structure of the plastic elbow. The moving mold has independent cooling water channels. After injection molding and cooling in the cavity inside the moving mold, the two moving molds separate, and the core is removed from the cavity, allowing for demolding.

[0003] Due to the numerous and complex components in molds, simplifying mold structures has always been an important development direction. To improve efficiency, modern molds often have multiple cavities, enabling the production of multiple plastic elbows at once. Many mold cores are now equipped with individually driven double-acting cylinders and air pipes, each connected to an air pump. This results in a large number of redundant and messy pipes within a single mold, making troubleshooting and maintenance extremely difficult, time-consuming, and labor-intensive when pipe faults occur. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a dynamic mold structure for the production of 90-degree plastic elbows, which solves the problems of complex structure, redundant and messy pipelines, and troublesome inspection and maintenance associated with equipping the mold core of the dynamic mold for the production of 90-degree plastic elbows with a separate double-acting cylinder and air pipe.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A moving mold structure for producing 90-degree plastic elbows includes a square mold body. The mold body has four elbow cavities that are symmetrically arranged in the center, both vertically and horizontally. Each of the four parts of the mold body corresponding to the elbow cavities has a movable groove. A guide post is fixed in the movable groove, and a movable cover plate that is movably sleeved on the guide post is movably connected in the movable groove. A mold core that can be movably inserted into the elbow cavity is fixed on one side of the movable cover plate corresponding to the elbow cavity.

[0007] Double-acting cylinders are fixed around the mold body at positions corresponding to the movable cover plate. The piston rods of the double-acting cylinders are connected to the movable cover plate. Each double-acting cylinder corresponds to a five-way solenoid valve installed on the mold body. The two pipe ports of each double-acting cylinder are connected to the outlet of the corresponding five-way solenoid valve through connecting pipes. The two exhaust ports of the five-way solenoid valves are not connected to pipes. The inlets of two adjacent five-way solenoid valves are connected to a three-way pipe through connecting pipe one. The two three-way pipes one corresponding to the four five-way solenoid valves are connected to three-way pipe two through connecting pipe two.

[0008] Preferably, each of the movable cover plates is provided with two guide posts, which are arranged vertically and symmetrically on the movable cover plates.

[0009] Preferably, the inner wall of the elbow cavity corresponding to the movable groove is a plane parallel to the movable cover plate, and the movable cover plate and the movable groove are fitted with a clearance.

[0010] Preferably, the mold body has an injection flow channel in the center that communicates with four elbow cavities, and the inlet of the injection flow channel is located in the center of the mold body.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] The eight mold cores of this utility model are fixed on four movable cover plates in four directions (up, down, left, and right) of the mold body. They are driven by four double-acting cylinders, which correspond to four five-way solenoid valves. The connecting pipe 1 of two adjacent five-way solenoid valves is connected to the connecting pipe 2 through a three-way pipe 1. The two connecting pipes 2 are then connected to a three-way pipe 2. Therefore, the air pump can drive the four double-acting cylinders and move the eight mold cores synchronously through a single main pipeline, thus achieving the effect of one driving eight. This not only simplifies the mold structure and pipeline structure, making inspection and maintenance easier, but also makes the core pulling action faster and more consistent, avoiding delays in the movement of multiple mold cores, thereby improving efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a rear view of the present invention.

[0015] In the diagram: 1. Mold body; 101. Elbow cavity; 102. Movable groove; 103. Injection runner; 2. Guide pillar; 3. Movable cover plate; 4. Mold core; 5. Double-acting cylinder; 501. Piston rod; 6. Five-way solenoid valve; 7. Connecting pipe; 8. Connecting pipe one; 9. T-pipe one; 10. Connecting pipe two; 11. T-pipe two. Detailed Implementation

[0016] 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.

[0017] like Figure 1-2 As shown, this utility model provides a technical solution: a moving mold structure for producing 90-degree plastic elbows, including a square mold body 1, four elbow cavities 101 that are symmetrically arranged in the center of the mold body 1, and an injection flow channel 103 that communicates with the four elbow cavities 101 in the center of the mold body 1, and the inlet of the injection flow channel 103 is located in the center of the mold body 1.

[0018] The mold body 1 has four movable slots 102 on the top, bottom, left and right sides corresponding to the elbow cavity 101. There is also another moving mold on the front of the mold body 1, which is not shown in the figure. It has the same shape as the mold body 1 and includes the elbow cavity 101, the movable slots 102 and the injection runner 103. The other moving mold is spliced ​​with the mold body 1 to form the whole injection mold.

[0019] A guide post 2 is fixed inside the movable groove 102, and a movable cover plate 3 is movably connected inside the movable groove 102 and slidably sleeved on the guide post 2. The inner wall of the movable groove 102 corresponding to the elbow cavity 101 is a plane parallel to the movable cover plate 3, and the movable cover plate 3 is clearance-fitted with the movable groove 102. Each movable cover plate 3 is provided with two guide posts 2. The guide posts 2 are vertically and symmetrically arranged on the movable cover plate 3. A mold core 4 that can be movably inserted into the elbow cavity 101 is fixed on one side of the movable cover plate 3 corresponding to the elbow cavity 101.

[0020] Double-acting cylinders 5 are fixed around the mold body 1 at positions corresponding to the movable cover plate 3. The piston rod 501 of the double-acting cylinder 5 is connected to the movable cover plate 3. Each double-acting cylinder 5 corresponds to a five-way solenoid valve 6 installed on the mold body 1. The two pipe interfaces of each double-acting cylinder 5 are connected to the air outlet of the corresponding five-way solenoid valve 6 through a connecting pipe 7. The two exhaust ports of the five-way solenoid valve 6 are not connected to pipes.

[0021] The air inlets of two adjacent five-way solenoid valves 6 are respectively connected to a three-way pipe 9 through a connecting pipe 8. The two three-way pipes 9 corresponding to the four five-way solenoid valves 6 are connected to the three-way pipe 11 through a connecting pipe 2 10. The connecting pipe 2 10 is behind the mold body 1 and does not contact it to avoid blocking the inlet of the injection flow channel 103. The three-way pipe 2 11 is used to connect to the main pipeline connected to the air outlet of the air pump.

[0022] Working principle:

[0023] The air pump is connected to two connecting pipes 10 through a main pipeline and a three-way pipe 11. The connecting pipes 10 are connected to four five-way solenoid valves 6 through two three-way pipes 9 and four connecting pipes 8 respectively. The four five-way solenoid valves 6 are synchronously controlled by the mold lower machine. The four double-acting cylinders 5 drive the eight mold cores 4 to move synchronously through four movable cover plates 3. The mold cores 4 are inserted into the elbow cavity 101. The gap between two adjacent and perpendicular mold cores 4 and an elbow cavity 101 forms the injection cavity of a plastic elbow. After injection molding is completed, the mold cores 4 are synchronously removed from the cavity, and the subsequent demolding process can be carried out.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] 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. A moving mold structure for producing 90-degree plastic elbows, comprising a square mold body (1), characterized in that: The mold body (1) has four symmetrical elbow cavities (101) in the center, both vertically and horizontally. The four parts of the mold body (1) corresponding to the elbow cavities (101) are provided with movable grooves (102). A guide post (2) is fixed in the movable groove (102), and a movable cover plate (3) is movably connected in the movable groove (102) and slidably sleeved on the guide post (2). A mold core (4) that can be movably inserted into the elbow cavity (101) is fixed on one side of the movable cover plate (3) corresponding to the elbow cavity (101). Double-acting cylinders (5) are fixed around the mold body (1) at positions corresponding to the movable cover plate (3). The piston rod (501) of the double-acting cylinder (5) is connected to the movable cover plate (3). Each double-acting cylinder (5) corresponds to a five-way solenoid valve (6) installed on the mold body (1). The two pipe interfaces of each double-acting cylinder (5) are connected to the air outlet of the corresponding five-way solenoid valve (6) through a connecting pipe (7). The two exhaust ports of the five-way solenoid valve (6) are not connected to pipes. The air inlets of two adjacent five-way solenoid valves (6) are connected to a three-way pipe (9) through a connecting pipe (8). The two three-way pipes (9) corresponding to the four five-way solenoid valves (6) are connected to a three-way pipe (11) through a connecting pipe (10).

2. The moving mold structure for producing a 90-degree plastic elbow according to claim 1, characterized in that: Each of the movable cover plates (3) is provided with two guide posts (2), which are arranged vertically and symmetrically on the movable cover plates (3).

3. The moving mold structure for producing a 90-degree plastic elbow according to claim 1, characterized in that: The inner wall of the elbow cavity (101) corresponding to the movable groove (102) is a plane parallel to the movable cover plate (3), and the movable cover plate (3) and the movable groove (102) are in clearance fit.

4. The moving mold structure for producing a 90-degree plastic elbow according to claim 1, characterized in that: The mold body (1) has an injection channel (103) in the center that is connected to four elbow cavities (101), and the inlet of the injection channel (103) is located in the center of the mold body (1).

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