Die ejector block positioning system

Abstract

The utility model discloses a mold ejector block positioning system, belongs to the field of molds, and solves the problem that the operation and the service life of equipment are affected by shaking of an ejector rod and an ejector block in the prior art. In the invention, the ejector block is mounted at the top end of the ejector rod and is relatively fixed with the ejector rod; the ejector rod and the mold template move relatively; a mounting counter bore is formed in the lower end of the ejector block, and the top end of the ejector rod is inserted into the mounting counter bore; an anti-rotation groove is formed in the side portion of the top end of the ejector rod, and an anti-rotation protrusion matched with the anti-rotation groove is formed on the inner side wall of the mounting counter bore. A guide mechanism is arranged between the middle section of the ejector rod and the mold template. According to the mold ejector block positioning system, the mode that the ejector rod positions the ejector block and the mold plate positions the ejector rod is adopted, and shaking of the ejector block and the ejector rod is limited.

Description

Technical Field

[0001] The utility model relates to a mould top block positioning system, belonging to the field of moulds. Background Art

[0002] Plastic products are injection molded in a mold, which includes an upper mold part and a lower mold part. After the mold is closed, injection molding can be carried out. After injection molding, the mold is opened. When the mold is opened to a certain extent, the driving mechanism drives the ejector to move, and the ejector can eject the product to achieve the purpose of demolding. However, in the process of mold production, the ejector block will shake during use, especially after long-term use or when the working environment changes, the shaking of the ejector and ejector block of the mold is particularly obvious, which not only increases the noise of the equipment, but also affects the long-term operation and service life of the equipment. Utility Model Content

[0003] The utility model provides a mold top block positioning system, which adopts a method of positioning the top block by a top rod and the top rod by a template to limit the shaking of the top block and the top rod.

[0004] The technical solution adopted by the utility model is a mold top block positioning system, comprising a mold template, a top rod and a top block, wherein the top block is installed at the top end of the top rod and is relatively fixed to the top rod; the top rod moves relatively with the mold template;

[0005] The lower end of the top block is constructed with a mounting countersunk hole, and the top end of the top rod is inserted into the mounting countersunk hole; the top side of the top rod is constructed with an anti-rotation groove, and the inner side wall of the mounting countersunk hole is constructed with an anti-rotation protrusion that is arranged in coordination with the anti-rotation groove ();

[0006] A guiding mechanism is provided between the middle section of the ejector rod and the mold template.

[0007] Optimally, in the above-mentioned mold top block positioning system, the anti-rotation protrusion is a combination of one or more of an arc-shaped protrusion, a flat key protrusion, and a spline protrusion; the anti-rotation protrusion is inserted into the anti-rotation groove and is arranged in coordination with the anti-rotation groove.

[0008] Optimally, the above mold top block positioning system further includes a positioning rod;

[0009] The top end of the push rod is provided with a second countersunk hole, the middle part of the top end of the push block is provided with a through hole, and the through hole is matched with the second countersunk hole;

[0010] The positioning rod passes through the through hole at the top of the top block and is inserted into the second countersunk hole of the top rod.

[0011] Optimally, in the above mold top block positioning system, the positioning rod is a threaded rod or a smooth pin;

[0012] When the positioning rod is a threaded rod, the second countersunk hole of the top rod is a threaded hole and is threadedly connected to the positioning rod;

[0013] When the positioning rod is a smooth pin shaft, the positioning rod and the second countersunk hole of the push rod are interference fit.

[0014] Optimally, in the above-mentioned mold ejector block positioning system, the guide mechanism includes a guide sleeve, which is a tubular sleeve, and the ejector rod is inserted into the guide sleeve and slides relative to the guide sleeve; the guide sleeve is relatively fixed to the mold template.

[0015] Optimally, in the above-mentioned mold top block positioning system, a pressure plate is constructed on the side of the guide sleeve, and the pressure plate is fixedly installed in the mold template by bolts.

[0016] The advantage of the present application is that in the technical solution of the present application, the top end of the push rod cooperates with the anti-rotation protrusion in the mounting countersunk hole of the push block through the anti-rotation groove, thereby reducing the rotation between the push rod and the push block. The top end of the push rod is inserted into the mounting countersunk hole of the push block, and the shaking of the push block at the top end of the push rod is reduced through the cooperation between the mounting countersunk hole and the top end of the push rod.

[0017] The top block is connected to the top of the top rod by a pin or bolt. The cooperation between the anti-rotation groove and the anti-rotation protrusion in the mounting countersunk hole can prevent the top block from rotating at the top of the top rod, thereby reducing the displacement and rotation of the pin and bolt caused by shaking, thereby ensuring a reliable connection between the top block and the top rod and further preventing shaking of the top rod and the top block. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the cooperation between the ejector rod and the ejector block in this application;

[0019] Figure 2 for Figure 1 A top view of

[0020] Figure 3 for Figure 2 AA section view;

[0021] Figure 4 This is a bottom view of the top block;

[0022] Figure 5 is a top view of the ejector pin;

[0023] Figure 6 It is a schematic diagram of the matching structure of the ejector rod and the guide sleeve;

[0024] Figure 7 for Figure 6 BB cross-sectional view. DETAILED DESCRIPTION

[0025] The technical features of the present invention are further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] As shown in the figure, the utility model is a mold top block positioning system, which includes a mold template, a top rod 1 and a top block 2.

[0027] The mold template is provided with a mounting hole for the ejector pin 1, and the axial direction of the mounting hole for the ejector pin 1 is arranged along the moving direction of the mold template. The ejector pin 1 passes through the mounting hole on the mold template and slides relative to the inner side wall of the mounting hole of the mold template during the movement of the mold template.

[0028] Both the top rod 1 and the top block 2 are made of solid metal blocks, which are formed by cutting and processing with mold steel. Among them, a mounting countersunk hole 201 is processed on the lower end surface of the top block 2 by milling or grinding, and the inner diameter of the mounting countersunk hole 201 is equal to or slightly smaller than the outer diameter of the top end of the top rod 1, so that the inner side of the mounting countersunk hole 201 is radially limited to the top end of the top rod 1, reducing the shaking of the top block 2 on the top end of the top rod 1.

[0029] In this embodiment, an anti-rotation groove 101 is constructed on the top side of the push rod 1, and an anti-rotation protrusion configured to cooperate with the anti-rotation groove 101) is constructed on the inner side wall of the mounting counterbore 201. As shown in the figure, the anti-rotation groove 101) in this embodiment is a notch cut out at the top of the push rod 1 along the radial direction perpendicular to the top surface of the push rod 1, and the shape of the anti-rotation protrusion is configured to cooperate with the anti-rotation groove 101. The shape of the anti-rotation groove 101) and the anti-rotation protrusion can also be a combination of one or more of an arc protrusion, a flat key protrusion, and a spline protrusion.

[0030] After the top end of the push rod 1 is inserted into the mounting countersunk hole 201 , the anti-rotation protrusion is inserted into the anti-rotation groove 101 ) and fits against the inner wall of the anti-rotation groove 101 ), thereby limiting the rotation and shaking of the push block 2 at the top end of the push rod 1 .

[0031] The anti-rotation protrusion is inserted into the anti-rotation groove 101 and matched with the anti-rotation groove 101 .

[0032] The top of the push rod 1 has a second countersunk hole, and the middle of the top of the top block 2 is formed with a through hole. After the top of the push rod 1 is inserted into the mounting countersunk hole 201, the through hole in the middle of the top of the top block 2 is coaxially arranged with the second countersunk hole at the top of the push rod 1. The positioning rod 3 passes through the through hole at the top of the top block 2 and is inserted into the second countersunk hole of the push rod 1.

[0033] In the present application, the positioning rod 3 can be a threaded rod or a copper smooth pin.

[0034] When the positioning rod 3 is a threaded rod, the second countersunk hole of the top rod 1 is a threaded hole and is threadedly connected to the positioning rod 3;

[0035] When the positioning rod 3 is a smooth pin shaft, the positioning rod 3 and the second countersunk hole of the push rod 1 are interference fit.

[0036] The top rod 1 and the top block 2 are fixed by the positioning rod 3, and the anti-rotation protrusion and the anti-rotation groove 101) are used to prevent the top block 2 from rotating at the top of the top rod 1, thereby reducing the possibility of displacement or even falling off of the positioning rod 3 after installation, improving the connection stability between the top rod 1 and the top block 2, and suppressing the shaking of the top block 2 at the top of the top rod 1.

[0037] There is a guide mechanism between the middle section of the ejector pin 1 and the mold template. The guide mechanism includes a guide sleeve 4, which is a circular tubular sleeve cut radially from a long copper or mold steel tube. The ejector pin 1 is inserted into the guide sleeve 4 and slides relative to the guide sleeve 4. The inner side of the guide sleeve 4 slides in contact with the side surface of the ejector pin 1 and limits the ejector pin 1. The guide sleeve 4 is relatively fixed to the mold template.

[0038] In this embodiment, the guide sleeve 4 and the mold template can be fixed by connecting and fixing through a pressing plate 401. Specifically, a pressing plate 401 is constructed on the side of the guide sleeve 4, and the pressing plate 401 is fixedly installed in the mold template by bolts.

[0039] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Any changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should fall within the scope of protection of the present invention.

Claims

1. A mold top block positioning system, comprising a mold template, a top rod (1) and a top block (2), wherein the top block (2) is mounted on the top of the top rod (1) and is relatively fixed to the top rod (1); the top rod (1) and the mold template move relatively; and the characteristics are: The lower end of the top block (2) is formed with a mounting countersunk hole (201), and the top end of the top rod (1) is inserted into the mounting countersunk hole (201); the top side of the top rod (1) is formed with an anti-rotation groove (101), and the inner side wall of the mounting countersunk hole (201) is formed with an anti-rotation protrusion that is arranged in coordination with the anti-rotation groove (101); A guiding mechanism is provided between the middle section of the ejector rod (1) and the mold template.

2. The mold top block positioning system according to claim 1, characterized in that: The anti-rotation protrusion is one or a combination of a curved protrusion, a flat key protrusion, and a spline protrusion; the anti-rotation protrusion is inserted into the anti-rotation groove (101) and is arranged in coordination with the anti-rotation groove (101).

3. The mold top block positioning system according to claim 1, characterized in that: Also includes a positioning rod (3); The top end of the push rod (1) is provided with a second countersunk hole, and the middle part of the top end of the push block (2) is provided with a through hole, and the through hole is arranged in coordination with the second countersunk hole; The positioning rod (3) passes through the through hole at the top end of the top block (2) and is inserted into the second countersunk hole of the top rod (1).

4. The mold top block positioning system according to claim 3, characterized in that: The positioning rod (3) is a threaded rod or a smooth pin; When the positioning rod (3) is a threaded rod, the second countersunk hole of the top rod (1) is a threaded hole and is threadedly connected to the positioning rod (3); When the positioning rod (3) is a smooth pin shaft, the positioning rod (3) and the second countersunk hole of the push rod (1) are interference fit.

5. The mold top block positioning system according to claim 1, characterized in that: The guide mechanism comprises a guide sleeve (4), which is a circular tubular sleeve, and the ejector rod (1) is inserted into the guide sleeve (4) and slides relative to the guide sleeve (4); the guide sleeve (4) is relatively fixed to the mold template.

6. The mold top block positioning system according to claim 5, characterized in that: A pressing plate (401) is constructed on the side of the guide sleeve (4), and the pressing plate (401) is fixedly installed in the mold template by bolts.

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