Core pulling structure of injection mold

Abstract

The utility model relates to the technical field of injection molds, in particular to a core pulling structure of an injection mold, which comprises two groups of oppositely arranged fixed bottom plates, a fixed mold seat for pressing a mold is arranged on the inner side of the fixed bottom plate on one side, and a movable mold seat matched with the fixed mold seat is arranged between the inner side of the fixed mold seat and the fixed bottom plate on the other side. A movable core-pulling part used for performing core pulling on the mold is arranged on the side, opposite to the fixed mold base, of the movable mold base, the movable core-pulling part comprises an abutting plate fixed to the side wall of the fixed bottom plate, a hydraulic rod extending towards one side of the movable mold base is arranged on the side, facing the movable mold base, of the abutting plate, and a core-pulling plate moving along with stretching and retracting of the hydraulic rod is arranged at the tail end of the hydraulic rod; and movable rods movably connected with the movable mold base are arranged at the upper and lower ends of the core-pulling plate. The problems that an existing injection mold core is fixedly arranged and cannot be observed in time, the core is easily damaged, and the quality of a finished product is affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold core pulling structure. Background Art

[0002] Injection molding, also known as injection molding, is a molding method that combines injection and molding. Injection mold molding is a processing method used in mass production of certain complex-shaped parts. It is a tool for producing plastic products. Specifically, it refers to the high-pressure injection of heated and melted plastic into the mold cavity by an injection molding machine. After cooling and solidification, the finished product is obtained. Its advantages are fast production speed, high efficiency, and automated operation. In order to facilitate mold molding, a mold movable mold core pulling mechanism is required. After the injection molding work is completed, the core needs to be pulled out. Since the core of some molds is thin and fixed, the state of the core cannot be observed in time during core pulling. If the core is damaged or fails, it is not discovered in time, and the subsequent injection molding work cannot be carried out normally, thereby affecting the efficiency of the injection molding work. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] In view of the deficiencies in the prior art, the utility model provides an injection mold core pulling structure, which solves the problem that the existing injection mold core fixing setting cannot be observed in time, which easily causes core damage and affects the quality of the finished product.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an injection mold core pulling structure, comprising two sets of fixed bottom plates arranged opposite to each other, a fixed mold seat for pressing the mold is arranged on the inner side of one of the fixed bottom plates, a movable mold seat cooperating with the fixed mold seat is arranged between the inner side of the fixed mold seat and the fixed bottom plate on the other side, and a movable core pulling part for pulling the core of the mold is arranged on the side opposite to the fixed mold seat;

[0007] The movable core pulling part includes an abutment plate fixed to the side wall of the fixed bottom plate, a hydraulic rod extending toward the movable mold base is provided on the side of the abutment plate facing the movable mold base, a core pulling plate moving with the extension and retraction of the hydraulic rod is provided at the end of the hydraulic rod, and movable rods movably connected to the movable mold base are provided at the upper and lower ends of the core pulling plate.

[0008] Preferably, the core pulling plate includes a mounting plate parallel to the fixed bottom plate, a core is provided on the mounting plate facing the movable die seat and extends to the side wall of the movable die seat facing the fixed die seat, through holes are provided at the upper and lower ends of the mounting plate for the movable rod to pass through, and the end of the hydraulic rod is fixedly connected to the side wall of the mounting plate opposite to the core.

[0009] Preferably, the movable rods are in two groups and are arranged perpendicular to the mounting plate. One end of the movable rod is fixed to the side wall of the movable mold base, and the other end passes through the through hole and extends horizontally in the opposite direction to the movable mold base.

[0010] Preferably, a stabilizing plate parallel to the side wall of the core-pulling plate is provided between the abutting plate and the core-pulling plate, and the movable rod and the hydraulic rod movably penetrate the stabilizing plate.

[0011] Preferably, a limit plate is provided at one end of the movable rod facing the abutment plate to prevent the movable rod from being dislocated from the stabilizing plate, and an abutment block is provided on the side wall of the abutment plate to abut against the end of the movable rod.

[0012] Preferably, support rods for stabilizing the fixed bottom plates are provided between the fixed bottom plates. The support rods are in two groups that are parallel to each other and symmetrically arranged, and the arrangement direction of the support rods is perpendicular to the fixed bottom plates.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides an injection mold core pulling structure, which has the following

[0015] Beneficial effects:

[0016] By setting a movable core pulling part, when the injection molding is in progress, the core pulling plate is pushed to move toward the movable mold seat, and then the movable mold seat is pushed toward the fixed mold seat for pressing to realize the injection molding of the mold. When the injection molding is completed, the hydraulic rod pulls the core pulling plate back to its position. Due to the adhesion of the mold after injection molding, the core pulling plate and the movable mold seat 3 move synchronously. After that, the core pulling plate is pushed by the abutment plate to separate the core pulling plate from the movable mold seat, thereby realizing the separation of the core and the mold, so that the core is completely exposed to the outside, which is convenient for timely observation of the status of the core. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 This is an overall schematic diagram of the injection mold and core-pulling structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the movable core-pulling part of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the core-pulling plate of the utility model.

[0021] Description of reference numerals:

[0022] 1. Fixed bottom plate; 11. Support rod; 2. Fixed die seat; 3. Moving die seat; 4. Movable core-pulling part; 41. Abutment plate; 411. Abutment block; 42. Hydraulic rod; 43. Core-pulling plate; 431. Mounting plate; 432. Core; 433. Through hole; 44. Movable rod; 45. Stabilizing plate. DETAILED DESCRIPTION

[0023] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0024] Figure 1-3 As an embodiment of the utility model, a core pulling structure of an injection mold comprises two groups of fixed base plates 1 arranged opposite to each other, a support rod 11 for stabilizing the fixed base plates 1 is arranged between the fixed base plates 1, the support rods 11 are two groups parallel and symmetrically arranged, the arrangement direction of the support rods 11 is perpendicular to the fixed base plates 1, and the stability between the two groups of fixed base plates 1 is ensured, a fixed mold seat 2 for pressing is arranged on the inner side of the fixed base plate 1 on one side, a movable mold seat 3 cooperating with the fixed mold seat 2 is arranged between the inner side of the fixed mold seat 2 and the fixed base plate 1 on the other side, and a movable core pulling part 4 for core pulling of the mold is arranged on the side opposite to the fixed mold seat 2 of the movable mold seat 3, in actual work, the injection of the product is realized by pressing the movable mold seat 3 with the fixed mold seat 2, when the movable mold seat 3 is pressed toward the fixed mold seat 2, the movable core pulling part 4 is molded with the product, after the injection is completed, the movable mold seat 3 is separated from the fixed mold seat 2, and the movable core pulling part 4 is automatically separated from the movable mold seat 3;

[0025] The movable core-pulling part 4 includes an abutment plate 41 fixed to the side wall of the fixed bottom plate 1, and a hydraulic rod 42 extending toward the side of the movable mold seat 3 is provided on the side of the abutment plate 41 facing the movable mold seat 3, and a core-pulling plate 43 moving with the extension and contraction of the hydraulic rod 42 is provided at the end of the hydraulic rod 42, and movable rods 44 movably connected to the movable mold seat 3 are provided at the upper and lower ends of the core-pulling plate 43, and a stabilizing plate 45 parallel to the side wall of the core-pulling plate 43 is provided between the abutment plate 41 and the core-pulling plate 43, and the movable rod 44 and the hydraulic rod 42 are movably connected to the movable mold seat 3. Stabilizing plate 45, in actual work, start hydraulic rod 42, push core pulling plate 43 to move toward movable die seat 3, and then push movable die seat 3 toward fixed die seat 2 for pressing, so as to realize injection molding of mold. When injection molding is completed, hydraulic rod 42 pulls core pulling plate 43 back to its original position. Due to the adhesion of mold after injection molding, core pulling plate 43 moves synchronously with movable die seat 3, and then core pulling plate 43 is pushed by abutting plate 41 to realize separation of core pulling plate 43 and movable die seat 3, so as to realize separation of core 432 from mold.

[0026] The core pulling plate 43 includes a mounting plate 431 parallel to the fixed base plate 1, and the mounting plate 431 is provided with a core 432 penetrating and extending to the side wall of the movable mold base 3 facing the fixed mold base 2 on the side facing the movable mold base 3, and the upper and lower ends of the mounting plate 431 are provided with through holes 433 for the movable rod 44 to penetrate, and the end of the hydraulic rod 42 is fixedly connected to the side wall of the mounting plate 431 opposite to the core 432. In actual work, when the injection molding work is carried out, the core 432 is inserted into the side wall of the movable mold base 3 facing the fixed mold base 2 as the core pulling plate 43 moves, which is convenient for the molding of the mold during injection molding. At the same time, the through hole 433 ensures the movement between the mounting plate 431 and the movable mold base 3.

[0027] The movable rod 44 is divided into two groups and is arranged perpendicular to the mounting plate 431. One end of the movable rod 44 is fixed to the side wall of the movable mold base 3, and the other end passes through the through hole 433 and extends horizontally in the opposite direction of the movable mold base 3. One end of the movable rod 44 facing the abutment plate 41 is provided with a limit plate to prevent the movable rod 44 and the stabilizing plate 45 from being dislocated. The side wall of the abutment plate 41 is provided with an abutment block 411 abutting against the end of the movable rod 44. In actual work, when the injection molding work is completed, the hydraulic rod 42 pulls the core pulling plate 43 back to its original position, driving the movable rod 44 to move toward the abutment plate 41. When the movable rod 44 contacts the abutment block 411, as the hydraulic rod 42 continues to move, the core pulling plate 43 continues to move, so that the movable rod 44 pushes the movable mold base 3 to separate from the core pulling plate 43, thereby pulling the core 432 away from the movable mold base 3, thereby realizing the separation of the core 432 from the already formed mold, and realizing automatic core pulling.

[0028] 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. An injection mold core pulling structure, comprising two sets of fixed bottom plates (1) arranged opposite to each other, characterized in that: A fixed die seat (2) for pressing a die is provided on the inner side of the fixed bottom plate (1) on one side, a movable die seat (3) cooperating with the fixed die seat (2) is provided between the inner side of the fixed die seat (2) and the fixed bottom plate (1) on the other side, and a movable core pulling portion (4) for pulling a core of a mold is provided on the side of the movable die seat (3) opposite to the fixed die seat (2); The movable core pulling part (4) comprises an abutment plate (41) fixed to the side wall of the fixed bottom plate (1); a hydraulic rod (42) extending towards the side of the movable mold base (3) is provided on the side of the abutment plate (41) facing the movable mold base (3); a core pulling plate (43) moving with the extension and retraction of the hydraulic rod (42) is provided at the end of the hydraulic rod (42); movable rods (44) movably connected to the movable mold base (3) are provided at the upper and lower ends of the core pulling plate (43).

2. The core-pulling structure of an injection mold according to claim 1, characterized in that: The core pulling plate (43) comprises a mounting plate (431) parallel to the fixed bottom plate (1); a core (432) is provided on the side of the mounting plate (431) facing the movable die seat (3) and extends to the side wall of the movable die seat (3) facing the fixed die seat (2); through holes (433) are provided at the upper and lower ends of the mounting plate (431) for the movable rod (44) to pass through; and an end of the hydraulic rod (42) is fixedly connected to the side wall of the mounting plate (431) opposite to the core (432).

3. The core-pulling structure of an injection mold according to claim 2, characterized in that: The movable rods (44) are divided into two groups and are arranged perpendicular to the mounting plate (431). One end of the movable rod (44) is fixed to the side wall of the movable mold base (3), and the other end passes through the through hole (433) and extends horizontally in the opposite direction to the movable mold base (3).

4. The core-pulling structure of an injection mold according to claim 3, characterized in that: A stabilizing plate (45) parallel to the side wall of the core pulling plate (43) is provided between the abutting plate (41) and the core pulling plate (43), and the movable rod (44) and the hydraulic rod (42) are movable and penetrate the stabilizing plate (45).

5. The core-pulling structure of an injection mold according to claim 4, characterized in that: One end of the movable rod (44) facing the abutment plate (41) is provided with a limit plate for preventing the movable rod (44) and the stabilizing plate (45) from dislocating, and the side wall of the abutment plate (41) is provided with an abutment block (411) abutting against the end of the movable rod (44).

6. The core-pulling structure of an injection mold according to claim 1, characterized in that: Support rods (11) for stabilizing the fixed bottom plates (1) are provided between the fixed bottom plates (1); the support rods (11) are in two groups that are parallel to each other and symmetrically arranged; the arrangement direction of the support rods (11) is perpendicular to the fixed bottom plates (1).

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