Positioning mold closing tool of injection mold

Abstract

The utility model provides a positioning mould-closing tool of an injection mould, which belongs to the technical field of injection moulds and comprises a turntable, a plurality of fixed mould bodies, a movable mould body and a driving mechanism, the fixed mould bodies are distributed on the turntable at equal intervals, a plurality of positioning ports are arranged around the outer edge of the turntable at equal intervals, a positioning mechanism is arranged at one of the positioning ports, and the movable mould body is arranged at the other of the positioning ports. The positioning mechanism comprises an outer sleeve and a moving rod, the outer sleeve is movably connected with the moving rod, a roller carrier and a concave roller in the roller carrier are arranged at the front end of the moving rod, and the concave roller is in rolling connection with the outer edge of the rotary disc. By the adoption of the structure, the fixed mold can be accurately rotated to the position under the movable mold, deviation is avoided, the situation that the fixed mold shakes during stopping is avoided, on the premise that the injection molding efficiency is improved, the situation that gaps are generated during mold closing due to position deviation is effectively avoided, and the quality of injection molding products is improved.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of injection molds, and specifically relates to a positioning and clamping tooling for an injection mold. Background Art

[0002] An injection mold is a tool for producing plastic products and also a tool for endowing plastic products with a complete structure and precise dimensions. Injection molding is a processing method used when mass-producing some parts with complex shapes. Specifically, it means injecting the heat-melted plastic into the mold cavity under high pressure by an injection molding machine, and after cooling and solidifying, a formed product is obtained.

[0003] At present, the existing injection molds consist of a moving mold and a fixed mold. The moving mold is installed on the moving template of the injection molding machine, and the fixed mold is installed on the fixed template of the injection molding machine. When injection molding, the moving mold and the fixed mold are closed to form a gating system and a cavity. When opening the mold, the moving mold and the fixed mold are separated to take out the plastic product.

[0004] Currently, in order to improve the injection efficiency, multiple fixed molds can be installed on the turntable at equal intervals. In this way, the time for switching molds and waiting for cooling can be saved, so as to increase the total injection volume and meet large-scale production. However, it is a major problem to accurately move the fixed mold directly below the moving mold through the turntable. Currently, it is generally achieved by controlling the rotation amplitude of the servo motor, and there are often small angular deviations, resulting in the moving mold and the fixed mold not being well combined, generating a certain gap and affecting the product quality. Summary of the Utility Model

[0005] The technical solution of the utility model aims at the technical problem that the existing technical solutions are too single, and provides a solution significantly different from the existing technology. Specifically, the utility model mainly provides a positioning and clamping tooling for an injection mold to solve the technical problem that when the fixed mold is moved directly below the moving mold through the turntable as mentioned in the above background art, there are sometimes small angular deviations, resulting in gaps in the mold clamping and affecting the product quality.

[0006] The technical solution adopted by the utility model to solve the above technical problems is as follows:

[0007] A positioning and clamping tooling for an injection mold includes a turntable, a plurality of fixed mold bodies, a moving mold body and a driving mechanism. The fixed mold bodies are evenly distributed on the turntable, and the moving mold body is located above the fixed mold bodies. A plurality of positioning ports are evenly arranged around the outer edge of the turntable. A positioning mechanism is arranged at one of the positioning ports. The positioning mechanism includes an outer sleeve and a moving rod. The outer sleeve and the moving rod are movably connected. A roller frame and a concave roller inside the roller frame are arranged at the front end of the moving rod. The concave roller and the outer edge of the turntable are in rolling connection.

[0008] Further, an installation block is arranged on the moving rod, and a spring is arranged between the installation block and the outer sleeve. The spring is sleeved on the moving rod.

[0009] Further, an armature block is embedded in the groove of the installation block, and an electromagnet is arranged on one side close to the armature block. The electromagnet is installed on the upper side of the outer wall of the outer sleeve through screws.

[0010] Further, a hollow rotating shaft is arranged at the center position of the turntable, a first gear is arranged on the hollow rotating shaft, and the first gear is meshed with a second gear.

[0011] Further, the driving mechanism includes two parallel columns. One of the columns is located at the center position of the turntable and penetrates through the hollow rotating shaft, and the column is movably connected to the moving die body.

[0012] Further, a top plate is jointly arranged at the upper ends of the two columns. A cylinder is arranged on the top plate. The output end of the cylinder is provided with a push plate and four connecting shafts below the push plate. The lower ends of the connecting shafts are connected to the upper side of the moving die body.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] By arranging the turntable, the hollow rotating shaft, the first gear, the second gear, the columns, the top plate, the cylinder, the push plate and the connecting shafts, the present utility model realizes the rapid switching of the fixed die, reduces the waiting time for cooling, improves the injection molding efficiency, and by the outer sleeve, the moving rod, the roller frame, the concave roller, the installation block, the armature block, the electromagnet and the spring, during the process of mold closing and injection molding, the fixed die can be accurately rotated to the directly below of the moving die, without deviation, and there will be no shaking of the fixed die when stopping, effectively avoiding the situation of generating gaps during mold closing due to position deviation, improving the quality of injection molded products, and having a stable structure, convenient operation, and certain practical value.

[0015] The following will combine the drawings with specific embodiments to explain the present utility model in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the overall structural schematic diagram of the present utility model;

[0017] Figure 2 is the overall structural exploded view of the present utility model;

[0018] Figure 3 is the exploded view of the positioning mechanism of the present utility model.

[0019] In the figure: 1, turntable; 11, positioning port; 12, hollow rotating shaft; 13, first gear; 14, second gear; 2, fixed mold body; 3, moving mold body; 4, driving mechanism; 41, column; 42, top plate; 43, cylinder; 44, pushing plate; 45, connecting shaft; 5, positioning mechanism; 51, outer sleeve; 52, moving rod; 53, roller frame; 54, concave roller; 55, mounting block; 56, armature; 57, electromagnet; 58, spring. Detailed implementation mode

[0020] For the convenience of understanding the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, providing these embodiments is to make the disclosed content of the present invention more thorough and comprehensive.

[0021] It should be noted that when an element is referred to as "fixedly provided on" another element, it can be directly on the other element or there can be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are only for the purpose of illustration.

[0022] Unless otherwise defined, all technical and scientific terms used in this article have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the specification of the present invention in this article are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this article includes any and all combinations of one or more related listed items.

[0023] Please refer specifically to the attached Figures 1-3 , a positioning and clamping tooling for an injection mold, comprising a turntable 1, a plurality of fixed mold bodies 2, a moving mold body 3 and a driving mechanism 4. The fixed mold bodies 2 are evenly distributed on the turntable 1, and the moving mold body 3 is located above the fixed mold bodies 2. A plurality of positioning ports 11 are evenly arranged in a circumferential manner at the outer edge position of the turntable 1. A positioning mechanism 5 is arranged at one of the positioning ports 11. The positioning mechanism 5 includes an outer sleeve 51 and a moving rod 52. The outer sleeve 51 and the moving rod 52 are movably connected. A roller frame 53 and a concave roller 54 inside the roller frame 53 are arranged at the front end of the moving rod 52. The concave roller 54 and the outer edge of the turntable 1 are in rolling connection.

[0024] With the above structure, during the process of mold clamping and injection molding, the fixed mold can be accurately rotated directly below the moving mold without deviation, and there will be no shaking of the fixed mold when it stops. This effectively avoids the situation of gaps generated during mold clamping due to position deviation while improving the injection molding efficiency, improves the quality of injection molded products, and has a stable structure, convenient operation, and certain practical value.

[0025] The specific operation is as follows. First, turn on the motor (existing equipment, not shown in the figure) that can drive the second gear 14 to rotate. Subsequently, the second gear 14 drives the first gear 13 to rotate. Then, the first gear 13 drives the turntable 1 to rotate through the hollow rotating shaft 12. At the same time, under the action of the spring 58, the moving rod 52 is pushed towards the turntable 1, causing the concave roller 54 to roll along the edge of the turntable 1. When the concave roller 54 is caught in the positioning port 11, the turntable 1 stops rotating. At this time, one of the fixed mold bodies 2 is exactly located directly below the moving mold body 3. Subsequently, the air cylinder 43 is activated, and the moving mold body 3 is driven to move downward through the pushing plate 44 and the connecting shaft 45, covering the fixed mold body 2 for injection molding. After the injection molding is completed, the moving mold body 3 moves upward and resets. Subsequently, the electromagnet 57 is energized to attract the armature block 56 close, and at the same time, the mounting block 55 drives the moving rod 52 to move towards the outer sleeve 51 side, moving the concave roller 54 out of the positioning port 11, compressing the spring 58. Then, the power supply of the electromagnet 57 is turned off, and the spring 58 presses the concave roller 54 against the outer edge of the turntable 1 again. Then, repeat the above steps to perform injection molding on multiple fixed mold bodies 2 in sequence.

[0026] Please refer specifically to Appendix Figure 1 and Appendix Figure 2 As shown, a hollow rotating shaft 12 is provided at the center position of the turntable 1. A first gear 13 is provided on the hollow rotating shaft 12, and the first gear 13 is meshed with a second gear 14. Through the mutual cooperation among the first gear 13, the second gear 14, and the hollow rotating shaft 12, the turntable 1 can be driven to rotate under the drive of the motor. The driving mechanism 4 includes two parallel distributed columns 41. One of the columns 41 is located at the center position of the turntable 1 and penetrates through the hollow rotating shaft 12, and the column 41 is movably connected to the moving mold body 3. The upper ends of the two columns 41 are jointly provided with a top plate 42. A cylinder 43 is provided on the top plate 42. The output end of the cylinder 43 is provided with a pushing plate 44 and four connecting shafts 45 below the pushing plate 44. The lower ends of the connecting shafts 45 are connected to the upper side of the moving mold body 3. Through the driving mechanism 4, a driving force is provided for the movement of the moving mold body 3, enabling the moving mold body 3 to move up and down stably.

[0027] Please refer specifically to Appendix Figure 1 and Appendix Figure 3, an installation block 55 is provided on the moving rod 52. A spring 58 is provided between the installation block 55 and the outer sleeve 51. The spring 58 is sleeved on the moving rod 52. Through the spring 58, the concave roller 54 is made to closely adhere to the outer edge of the turntable 1. An armature block 56 is embedded in the groove of the installation block 55. An electromagnet 57 is provided on one side close to the armature block 56. The electromagnet 57 is installed on the upper side of the outer wall of the outer sleeve 51 by screws. Through the mutual cooperation between the electromagnet 57 and the armature block 56, the traction of the concave roller 54 is realized, so that the concave roller 54 is pulled out of the positioning port 11.

[0028] The above has made an exemplary description of the present invention in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above methods. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A positioning and clamping tool for an injection mold, comprising a turntable (1), a plurality of fixed mold bodies (2), a movable mold body (3) and a driving mechanism (4), wherein the fixed mold bodies (2) are evenly spaced on the turntable (1), and the movable mold body (3) is located above the fixed mold body (2), and is characterized in that: A plurality of positioning openings (11) are arranged at equal intervals around the outer edge of the turntable (1), wherein a positioning mechanism (5) is arranged at one of the positioning openings (11), the positioning mechanism (5) comprising an outer sleeve (51) and a moving rod (52), the outer sleeve (51) and the moving rod (52) being movably connected, a roller frame (53) and a concave roller (54) in the roller frame (53) being arranged at the front end of the moving rod (52), and the concave roller (54) and the outer edge of the turntable (1) being rollingly connected.

2. The positioning and clamping tooling for an injection mold according to claim 1, characterized in that: A mounting block (55) is provided on the moving rod (52), a spring (58) is provided between the mounting block (55) and the outer sleeve (51), and the spring (58) is sleeved on the moving rod (52).

3. The positioning and clamping tooling for an injection mold according to claim 2, characterized in that: An armature block (56) is embedded in the groove of the mounting block (55), and an electromagnet (57) is provided on a side close to the armature block (56). The electromagnet (57) is mounted on the upper side of the outer wall of the outer sleeve (51) by means of screws.

4. The positioning and clamping tooling for an injection mold according to claim 1, characterized in that: A hollow rotating shaft (12) is arranged at the center of the rotating disk (1), a first gear (13) is arranged on the hollow rotating shaft (12), and the first gear (13) is meshingly connected with a second gear (14).

5. The positioning and clamping tooling for an injection mold according to claim 1, characterized in that: The driving mechanism (4) comprises two parallel distributed columns (41), wherein one of the columns (41) is located at the center of the rotating disk (1) and passes through the hollow rotating shaft (12), and the column (41) and the movable mold body (3) are movably connected.

6. The positioning and clamping tooling for an injection mold according to claim 5, characterized in that: A top plate (42) is commonly provided at the upper ends of the two uprights (41), a cylinder (43) is provided on the top plate (42), a push plate (44) and four connecting shafts (45) on the lower side of the push plate (44) are provided at the output end of the cylinder (43), and the lower end of the connecting shaft (45) is connected to the upper side of the movable mold body (3).

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