Mold closing device for injection molding machine

Abstract

The utility model relates to the technical field of injection molding, and discloses a mold closing device for an injection molding machine, which comprises a bottom mold and a top mold, two first connecting frames are fixed on the top mold, side plates are fixed on the two first connecting frames, and guide components are arranged on two sides of the top mold. According to the utility model, through the combination of the two guide plates and the plurality of rollers, the two side plates can be clamped, and the guide effect is realized in the vertical movement of the top mold, so that the concentricity between the bottom mold and the top mold is ensured, and the molding precision and quality of the injection molding device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding, in particular to a mold clamping device for an injection molding machine. Background Art

[0002] The mold closing of injection molding refers to the process of bringing the two parts of the mold together through a certain force and action to form a closed cavity, ready to inject molten plastic.

[0003] During the installation of the mold on the injection molding machine, if the locating pins or locating holes of the mold are not correctly aligned, or if there is displacement during the installation process, it will cause eccentricity between the upper and lower molds. In addition, long-term use will cause wear of the mechanical parts of the injection molding machine, such as guide pillars and guide sleeves. If these parts are damaged or loose, the relative positions of the upper and lower molds will shift during the opening and closing process. Secondly, the hydraulic system of the injection molding machine may have problems such as unstable pressure, flow fluctuations or system oil leakage. These problems will affect the opening and closing action of the injection molding machine, resulting in eccentricity of the upper and lower molds. When the upper and lower molds are eccentric, it will affect the quality of the finished product.

[0004] Therefore, it is necessary to design a mold clamping device for an injection molding machine to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a mold clamping device for an injection molding machine.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A mold clamping device for an injection molding machine comprises a bottom mold and a top mold. Two first connecting frames are fixed on the top mold, side plates are fixed on the two first connecting frames, and guide components are arranged on both sides of the top mold.

[0008] As a preferred technical solution of the utility model, the guide assembly includes a mounting plate, two connecting members, a guide plate, a plurality of grooves and a plurality of rollers. The mounting plate is located on one side of the top mold, one end of the two connecting members are connected to the mounting plate, and the other ends of the two connecting members are connected to the guide plate. The plurality of grooves are opened on the side of the guide plate, and the plurality of rollers are rotatably installed in the plurality of grooves respectively.

[0009] As a preferred technical solution of the utility model, the connecting member includes an outer tube, an inner rod and a spring. The outer tube is fixed on a mounting plate, the inner rod is slidably connected in the outer tube, one end of the inner rod extends to the outside of the outer tube and is fixedly connected to the guide plate, and the spring is arranged between the outer tube and the inner rod.

[0010] As a preferred technical solution of the utility model, a feedback component is arranged on the mounting plate, and the feedback component includes a slide bar, a scale line, a second connecting frame and a slip ring. The slide bar is fixed to the side of the mounting plate, and the scale line is arranged on the outer surface of the slide bar. One end of the second connecting frame is fixedly connected to the guide plate, and the other end is fixedly connected to the slip ring. The slip ring is slidably sleeved on the slide bar.

[0011] As a preferred technical solution of the utility model, the plurality of rollers located on the same guide plate are evenly distributed.

[0012] As a preferred technical solution of the utility model, the inner surface of the outer cylinder and the outer surface of the inner rod are in contact with each other.

[0013] The utility model has the following beneficial effects:

[0014] 1. Through the combination of two guide plates and several rollers, the two side plates can be clamped and play a guiding role in the up and down movement of the top mold, which ensures the concentricity between the bottom mold and the top mold, thereby improving the molding accuracy and quality of the injection molding device;

[0015] 2. When an eccentric state occurs between the bottom mold and the top mold, the top mold squeezes the guide plate and the guide plate moves. Through the structure of the slip ring and the slide rod, the position of the slip ring can be measured to determine whether an eccentric state occurs between the bottom mold and the top mold. This helps to detect problems in time and take corresponding adjustment measures to ensure the normal operation of the injection molding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a mold clamping device for an injection molding machine proposed by the utility model;

[0017] Figure 2 for Figure 1 A magnified view of the structure at A.

[0018] In the figure: 1 bottom mold, 2 top mold, 3 first connecting frame, 4 side plate, 51 mounting plate, 52 connecting piece, 53 guide plate, 54 groove, 55 roller, 61 slide rod, 62 scale line, 63 second connecting frame, 64 slip ring. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Reference Figure 1-2A mold clamping device for an injection molding machine includes a bottom mold 1 and a top mold 2. Two first connecting frames 3 are fixed on the top mold 2. Side plates 4 are fixed on the two first connecting frames 3. Guide components are arranged on both sides of the top mold 2. The guide components include a mounting plate 51, two connecting members 52, a guide plate 53, a plurality of grooves 54 and a plurality of rollers 55. The mounting plate 51 is located on one side of the top mold 2. One end of the two connecting members 52 is connected to the mounting plate 51, and the other end of the two connecting members 52 is connected to the guide plate 53. The connecting member includes an outer cylinder, an inner rod and a spring. The outer cylinder is fixed to the mounting plate 51. On the mounting plate 51, the inner rod is slidably connected in the outer cylinder, the inner surface of the outer cylinder and the outer surface of the inner rod fit each other, one end of the inner rod extends to the outside of the outer cylinder and is fixedly connected to the guide plate 53, and the spring is arranged between the outer cylinder and the inner rod. The pressure exerted by the two guide plates 53 on the two side plates 4 is conducive to ensuring the concentricity between the bottom mold 1 and the top mold 2, thereby ensuring the injection molding effect of the device. A plurality of grooves 54 are opened on the side of the guide plate 53, and a plurality of rollers 55 are rotatably installed in the plurality of grooves 54 respectively, and the plurality of rollers 55 located on the same guide plate 53 are evenly distributed.

[0021] A feedback assembly is provided on the mounting plate 51, and the feedback assembly includes a slide bar 61, a scale line 62, a second connecting frame 63 and a slip ring 64. The slide bar 61 is fixed on the side of the mounting plate 51, and the scale line 62 is provided on the outer surface of the slide bar 61. One end of the second connecting frame 63 is fixedly connected to the guide plate 53, and the other end is fixedly connected to the slip ring 64. The slip ring 64 is slidably sleeved on the slide bar 61. When an eccentric state occurs between the bottom mold 1 and the top mold 2, the top mold 2 will squeeze one of the guide plates 53 through the side plate 4, which causes the guide plate 53 to move. When the guide plate 53 moves, it can drive the slip ring 64 to move through the second connecting frame 63, which causes the position of the slip ring 64 on the slide bar 61 to be changed. A scale line 62 is provided on the slide bar 61, and the staff can judge the position state of the slip ring 64 according to the scale line 62, thereby judging whether an eccentric state occurs between the bottom mold 1 and the top mold 2.

[0022] The specific working principle of the utility model is as follows:

[0023] When the mold clamping device for the injection molding machine proposed by the utility model is in use, under the action of the four connecting members 52, the two guide plates 53 always have a tendency to move in the direction close to the top mold 2, which makes the plurality of rollers 55 contact the two guide plates 53 respectively, and the plurality of rollers 55 on the two guide plates 53 can clamp the two side plates 4, so as to guide the up and down movement of the top mold 2. The pressure exerted by the two guide plates 53 on the two side plates 4 is conducive to ensuring the concentricity between the bottom mold 1 and the top mold 2, so as to ensure the injection molding effect of the device. In addition, the plurality of rollers 55 on the guide plates 53 can reduce the friction between the side plates 4 and the guide plates 53, which is conducive to the up and down movement of the top mold 2 and the two side plates 4.

[0024] When an eccentric state occurs between the bottom mold 1 and the top mold 2, the top mold 2 will squeeze one of the guide plates 53 through the side plate 4, which causes the guide plate 53 to move. When the guide plate 53 moves, it can drive the slip ring 64 to move through the second connecting frame 63, which changes the position of the slip ring 64 on the slide bar 61. The slide bar 61 is provided with a scale line 62. The staff can judge the position state of the slip ring 64 according to the scale line 62, thereby judging whether an eccentric state occurs between the bottom mold 1 and the top mold 2.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A mold clamping device for an injection molding machine, comprising a bottom mold (1) and a top mold (2), characterized in that: Two first connecting frames (3) are fixed on the top mold (2), and side plates (4) are fixed on the two first connecting frames (3). Guide components are provided on both sides of the top mold (2); The guide assembly comprises a mounting plate (51), two connecting members (52), a guide plate (53), a plurality of grooves (54) and a plurality of rollers (55); the mounting plate (51) is located on one side of the top mold (2); one end of the two connecting members (52) is connected to the mounting plate (51); the other ends of the two connecting members (52) are connected to the guide plate (53); the plurality of grooves (54) are arranged on the side of the guide plate (53); and the plurality of rollers (55) are rotatably mounted in the plurality of grooves (54).

2. A mold clamping device for an injection molding machine according to claim 1, characterized in that: The connecting member comprises an outer cylinder, an inner rod and a spring. The outer cylinder is fixed on a mounting plate (51). The inner rod is slidably connected in the outer cylinder. One end of the inner rod extends to the outside of the outer cylinder and is fixedly connected to a guide plate (53). The spring is arranged between the outer cylinder and the inner rod.

3. A mold clamping device for an injection molding machine according to claim 2, characterized in that: A feedback component is arranged on the mounting plate (51), and the feedback component comprises a slide bar (61), a scale line (62), a second connecting frame (63) and a slip ring (64). The slide bar (61) is fixed on the side of the mounting plate (51), and the scale line (62) is arranged on the outer surface of the slide bar (61). One end of the second connecting frame (63) is fixedly connected to the guide plate (53), and the other end is fixedly connected to the slip ring (64). The slip ring (64) is slidably sleeved on the slide bar (61).

4. A mold clamping device for an injection molding machine according to claim 1, characterized in that: The plurality of rollers (55) located on the same guide plate (53) are evenly distributed.

5. A mold clamping device for an injection molding machine according to claim 2, characterized in that: The inner surface of the outer cylinder and the outer surface of the inner rod are in contact with each other.

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