Two-time thread-twisting core-pulling mechanism

Abstract

The utility model belongs to the technical field of two-time thread-twisting core-pulling mechanisms, and particularly relates to a two-time thread-twisting core-pulling mechanism which comprises a panel, a stripper plate is fixedly connected to the bottom of the panel, and a guide sleeve is fixedly connected to the inner wall of the stripper plate; threads cannot be accurately formed through one-time thread twisting and core pulling, and two-time thread twisting and core pulling can be carried out in stages; according to the utility model, the structure is simple, the demoulding and the cleaning are convenient, the product can be separated from the mould more easily after two times of thread twisting and core pulling, and impurities such as plastic chippings possibly remained on the mould core can be conveniently cleaned in a gap between the two times of core pulling, so that in the process of continuous injection molding production of plastic products with threads, the production efficiency is greatly improved. Some flashes may be generated or remained on the mold core in the molding process of the plastic melt; after the first time of twisted tooth core pulling, the gap can be utilized to clean the mold core, and then the second time of core pulling and product demolding are carried out, so that the normal working state of the mold can be ensured, the downtime caused by the problems of mold blockage and the like is reduced, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to twice twist tooth core-pulling mechanism technical field, concretely is a twice twist tooth core-pulling mechanism. BACKGROUND

[0002] In the structure design of injection mould, it is generally difficult for the plastic product with special shape and length to be separated from the mould forming piece, and a special demoulding mechanism needs to be specially designed to complete the demoulding, the design of the demoulding mechanism affects the overall structure layout of the mould, the mode selection of the pouring system and the cooling system. The pen barrel product of the ball pen is a typical representative of these types of plastic products, the hollow tube inside the pen barrel is long and small, and a special demoulding mechanism needs to be used to realize demoulding, and the outer wall is usually designed with a fine toothed thread at the lower end and needs to be demoulded with an external thread. The biggest difficulty in the design of the injection mould of such special-shaped plastic parts is the design of the pouring system and the demoulding mechanism, and the design of the control assembly to ensure the smooth operation of the mould and the demoulding mechanism. At present, there are still relatively few reports on the innovative design of the mould structure and the demoulding mechanism for the products with special shapes and long shapes, and therefore, it is necessary to carry out more design research in this regard. The design of the above core-pulling mechanism is designed for the specific needs of the isotropic core-pulling of the needle product, and for the needs of multi-directional and multi-core-pulling on the core-pulling mechanism, the twice twist tooth core-pulling mechanism product is relatively complex, needs to be twisted at two places, and is completed through core-pulling, and the existing core-pulling mechanism product has low production efficiency, and therefore, the twice twist tooth core-pulling mechanism is proposed to solve the above problems. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a twice twist tooth core-pulling mechanism to solve the problem of low production efficiency of the existing core-pulling mechanism product in the background art.

[0004] In order to achieve the above object, the utility model provides the following technical scheme: a twice tooth twisting core pulling mechanism, including the panel, the panel bottom fixedly connected with the stripping plate, the stripping plate inner wall fixedly connected with the guide sleeve, the guide sleeve inner wall slidingly connected with the guide post, the guide post outer wall fixedly connected with the die foot, the die foot bottom fixedly connected with the bottom plate, the guide sleeve outer wall sleeved with the ejection plate, the ejection plate top is provided with the movable template, the movable template top is provided with the female template, the female template left end outer wall fixedly connected with the mounting plate, the mounting plate left section outer wall fixedly installed with the oil cylinder, the oil cylinder output fixedly connected with the push rod, the push rod inner wall inner side outer wall fixedly connected with the moving block, the moving block outer wall slidingly connected with the fixed plate, the mounting plate lower section outer wall fixedly installed with the motor, the motor output fixedly connected with the rotating shaft, the rotating shaft outer wall fixedly connected with the big gear, the big gear is engaged with the pinion, the pinion transmission is connected with the tooth twisting core no.

[0005] Preferably, the panel top fixedly installed with the positioning ring, and the panel inner wall is provided with the injection port pouring sleeve; the motor fixedly installed in the left end outer wall of the mounting plate operates, the rotating shaft fixedly connected with the motor output rotates, the big gear fixedly connected with the rotating shaft outer wall rotates, the small gear engaged with the rotating big gear rotates, drives the tooth twisting core no.

[0006] Preferably, the fixed plate slidingly connected in the stripping plate and female template inner wall.

[0007] Preferably, the female template, movable template and ejection plate inner wall slidingly connected in the guide sleeve outer wall.

[0008] Preferably, the sliding block slidingly connected in the female template inner wall; the connected sliding block is extracted, the oil cylinder fixedly installed in the mounting plate operates, drives the push rod fixedly connected with the output to move, and the moving block fixedly connected in the push rod moves.

[0009] Preferably, the transmission shaft rotationally connected in the bottom plate inner wall; the moving fixed plate opens, drives the connected inclined guide post to move, the connected injection molding machine drives the connected transmission shaft to rotate through the chain disc, drives the connected tooth twisting core no.

[0010] Preferably, the tooth twisting core no. symmetry is arranged in the female template inner cavity; the moving push rod inner side outer wall fixedly connected moving block moves, drives the outer wall slidingly connected fixed plate to move, and the moving fixed plate drives the core small gear and tooth twisting core no. inner wall core to extract, that is, the product forming can be completed.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] 1. The twice tooth twisting core-pulling mechanism, for the product with complex thread structure, such as the threaded part with multiple levels of different pitches or directions, once tooth twisting core-pulling cannot accurately form threads, and twice tooth twisting core-pulling can be carried out in stages; it is convenient to demould and clean, after twice tooth twisting core-pulling, the product is more easily demoulded from the mould, and the gap between twice core-pulling can conveniently clean the plastic debris and sundries possibly remaining on the mould core, in the process of continuously injection moulding the plastic product with threads, the plastic melt can produce some flash or remain on the core in the forming process.

[0013] 2. The twice tooth twisting core-pulling mechanism improves the forming efficiency, through reasonably arranging the actions of twice core-pulling, the flow of the plastic melt in the mould is more smooth, and the forming defects are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the overall structure schematic view of the utility model;

[0015] Figure 2 It is the local structure explosion schematic view of the utility model;

[0016] Figure 3 It is the inclined side structure schematic view of the utility model;

[0017] Figure 4 It is the local enlarged structure schematic view of the utility model.

[0018] In the drawing: 1, mounting plate; 2, oil cylinder; 3, push rod; 4, moving block; 5, fixed plate; 6, faceplate; 7, stripping plate; 8, female mold plate; 9, movable mold plate; 10, ejection plate; 11, mold foot; 12, bottom plate; 13, guide sleeve; 14, guide column; 15, inclined guide column; 16, sliding block; 17, chain disc; 18, transmission shaft; 19, tooth twisting core one; 20, motor; 21, rotating shaft; 22, large gear; 23, small gear; 24, tooth twisting core two. DETAILED DESCRIPTION

[0019] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0020] Please refer to Figures 1-4 The utility model provides a technical scheme: a twice tooth twisting core pulling mechanism, including panel 6, panel 6 bottom fixedly connected with the material removal plate 7, the material removal plate 7 inner wall fixedly connected with the guide sleeve 13, the guide sleeve 13 inner wall slidingly connected with the guide column 14, the guide column 14 outer wall fixedly connected with the mould foot 11, the mould foot 11 bottom fixedly connected with the bottom plate 12, the guide sleeve 13 outer wall sleeve joint has the ejection plate 10, the ejection plate 10 top is provided with the movable template 9, the movable template 9 top is provided with the female template 8, the female template 8 left end outer wall fixedly connected with the mounting plate 1, the mounting plate 1 left segment outer wall fixedly installed with the oil cylinder 2, the oil cylinder 2 output end fixedly connected with the push rod 3, the push rod 3 inner wall inner side outer wall fixedly connected with the moving block 4, the moving block 4 outer wall slidingly connected with the fixed plate 5, the mounting plate 1 lower segment outer wall fixedly installed with the motor 20, the motor 20 output end fixedly connected with the rotating shaft 21, the rotating shaft 21 outer wall fixedly connected with the large gear 22, the large gear 22 is engaged with the pinion 23, and the pinion 23 is drivingly connected with the tooth twisting core two 24, the female template 8 inner wall slidingly connected with the inclined guide column 15, the inclined guide column 15 outer wall slidingly connected with the sliding block 16, the sliding block 16 is drivingly connected with the transmission shaft 18 through the chain disc 17, and the transmission shaft 18 is drivingly connected with the tooth twisting core one 19;The positioning ring is fixedly installed at the top of the panel 6, and the injection port pouring sleeve is communicated and arranged in the inner wall of the panel 6;The fixed plate 5 is slidingly connected to the inner walls of the material removal plate 7 and the female template 8;The inner walls of the female template 8, the movable template 9 and the ejection plate 10 are slidingly connected to the outer wall of the guide sleeve 13;The sliding block 16 is slidingly connected to the inner wall of the female template 8;The transmission shaft 18 is rotatably connected to the inner wall of the bottom plate 12;The tooth twisting core two 24 is symmetrically arranged in the inner cavity of the female template 8.

[0021] Working principle: the connected sliding block 16 is pulled out, the oil cylinder 2 fixedly installed on the outer wall of the mounting plate 1 operates, drives the output end fixedly connected push rod 3 to move, the moving block 4 fixedly connected in the push rod 3 moves along with it, the moving moving block 4 drives the outer wall slidingly connected fixed plate 5 to move, and the moving fixed plate 5 opens, drives the connected inclined guide column 15 to move, and the connected injection molding machine drives the connected transmission shaft 18 to rotate through the chain disc 17, drives the connected tooth twisting core one 19 to rotate, and the rotating tooth twisting core one 19 twists the tooth;

[0022] The motor 20 fixedly installed on the left end outer wall of the mounting plate 1 operates, the rotating shaft 21 fixedly connected to the output end of the motor 20 rotates, the large gear 22 fixedly connected to the outer wall of the rotating shaft 21 rotates, the small gear 23 engaged with the rotating large gear 22 rotates, drives the threaded core two 24 connected in transmission to rotate and withdraw outward, the oil cylinder 2 connected drives the push rod 3 fixedly connected to the output end to move, the moving block 4 fixedly connected to the inner side outer wall of the moving push rod 3 moves, drives the fixed plate 5 slidingly connected to the outer wall to move, the moving fixed plate 5 drives the core to be extracted from the inner wall of the core small gear 23 and the threaded core two 24 connected, and the product forming can be completed.

[0023] It is to be noted that the relational terms herein, such as first and second, and the like, are used solely to distinguish one from another entity or action without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

Claims

1. A two-stage tooth core-pulling mechanism comprising a face plate (6), characterised in that: The panel (6) bottom fixedly connected with a stripper plate (7), the inner wall of the stripper plate (7) is fixedly connected with a guide sleeve (13), the inner wall of the guide sleeve (13) is slidably connected with a guide column (14), the outer wall of the guide column (14) is fixedly connected with a die foot (11), the bottom of the die foot (11) is fixedly connected with a bottom plate (12), the outer wall of the guide sleeve (13) is sleeved with an ejection plate (10), the top of the ejection plate (10) is provided with a movable die plate (9), the top of the movable die plate (9) is provided with a female die plate (8), the outer wall of the left end of the female die plate (8) is fixedly connected with a mounting plate (1), the outer wall of the left segment of the mounting plate (1) is fixedly installed with an oil cylinder (2), the output end of the oil cylinder (2) is fixedly connected with a push rod (3), the inner wall of the push rod (3) is fixedly connected with a moving block (4), the outer wall of the moving block (4) is slidably connected with a fixed plate (5), the outer wall of the lower segment of the mounting plate (1) is fixedly installed with a motor (20), the output end of the motor (20) is fixedly connected with a rotating shaft (21), the outer wall of the rotating shaft (21) is fixedly connected with a large gear (22), the large gear (22) is engaged with a small gear (23), the small gear (23) is drivingly connected with a toothed core two (24), the inner wall of the female die plate (8) is slidably connected with an inclined guide column (15), the outer wall of the inclined guide column (15) is slidably connected with a sliding block (16), the sliding block (16) is drivingly connected with a transmission shaft (18) through a chain disc (17), the transmission shaft (18) is drivingly connected with a toothed core one (19).

2. A two-step tooth core-drawing mechanism according to claim 1, characterized in that: The panel (6) top is fixedly installed with a positioning ring, and the inner wall of the panel (6) is provided with an injection port pouring sleeve in communication.

3. A two-step tooth core-drawing mechanism according to claim 1, characterized in that: The fixed plate (5) is slidably connected to the inner walls of the stripper plate (7) and the female die plate (8).

4. A two-step tooth core-drawing mechanism according to claim 1, characterized in that: The inner walls of the female die plate (8), the movable die plate (9) and the ejection plate (10) are slidably connected to the outer wall of the guide sleeve (13).

5. A two-step tooth core-drawing mechanism according to claim 1, characterized in that: The sliding block (16) is slidably connected to the inner wall of the female die plate (8).

6. A two-step tooth core-drawing mechanism according to claim 1, characterized in that: The transmission shaft (18) is rotatably connected to the inner wall of the bottom plate (12).

7. A two-step tooth core-drawing mechanism according to claim 1, characterized in that: The toothed core two (24) is symmetrically arranged in the inner cavity of the female die plate (8).

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