Three-plate mold structure

Abstract

A three-plate mold structure, comprising a back mold fixed plate, a movable mold plate, a fixed mold plate, a water gap plate, a front mold fixed plate and a plurality of guide columns and at least one limiting mechanism arranged in sequence, a plurality of through holes for each guide column are arranged on the movable mold plate, the fixed mold plate and the water gap plate, each guide column passes through each through hole and is arranged, both ends of each guide column are connected with the back mold fixed plate and the front mold fixed plate respectively, the limiting mechanism is connected with the fixed mold plate, the limiting mechanism is provided with a limiting part, the guide column is provided with a butt joint part, when the fixed mold plate, the movable mold plate and the back mold fixed plate are opened to a set position in the direction away from the front mold fixed plate, the limiting part is engaged with the butt joint part to realize positioning the fixed mold plate. The three-plate mold structure can avoid the rebound of the fixed mold plate when the fixed mold plate and the movable mold plate are separated, and reduce the risk of the mechanical hand colliding with the mold.

Description

TECHNICAL FIELD

[0001] The utility model relates to mould technical field, especially a kind of three-plate mould structure. BACKGROUND

[0002] Three-plate mould structure is used to injection molding to obtain the tool of required product in industrial production.The existing three-plate mould structure includes fixed template and movable template between front template and rear template;When three-plate mould structure is opened, it is affected by lock die / damper, fixed template and movable template are separated, and it is rebounded, and position is not fixed, at this time, mechanical hand is in fixed template and grabs product, because the opening position of fixed template is not consistent with stop position, it leads to the risk of mechanical hand colliding with mould, and mechanical hand is prone to product abnormality, and alarm is more. SUMMARY

[0003] Therefore, the utility model provides a kind of three-plate mould structure, can avoid the rebound of fixed template when fixed template and movable template are separated, reduce the risk of mechanical hand colliding with mould.

[0004] A kind of three-plate mould structure, including the rear mould fixed plate, movable template, fixed template, water gap plate, front mould fixed plate and multiple guide columns and at least one limiting mechanism that are sequentially stacked, multiple through holes for each guide column are provided on the movable template, the fixed template and the water gap plate, each guide column is provided through each through hole, the two ends of each guide column are connected with the rear mould fixed plate, the front mould fixed plate, the limiting mechanism is connected to the fixed template, the limiting mechanism is provided with a limiting portion, the guide column is provided with a butt joint portion, when the fixed template, the movable template and the rear mould fixed plate are opened to the set position in the direction away from the front mould fixed plate, the limiting portion and the butt joint portion are engaged to position the fixed template.

[0005] Optionally, the fixed template is provided with a perforation communicating with the through hole, the limiting portion is at least partially disposed in the perforation, and the limiting portion is extended from the perforation and engaged with the butt joint portion when the fixed template is opened to the set position.

[0006] Optionally, the limiting portion includes an elastic member and a limiting column, one end of the limiting column is connected with the elastic member, the other end of the limiting column is abutted on the outer wall of the guide column by the elastic force of the elastic member, and the butt joint portion is a groove provided on the outer wall of the guide column;When the limiting portion is engaged with the butt joint portion, the end portion of the limiting column is in the groove.

[0007] Optionally, the groove is an annular groove provided on the outer wall of the guide column, and the annular groove is arranged around the circumferential direction of the guide column.

[0008] Optionally, the perforation includes a first hole segment and a second hole segment connected in sequence, the inner diameter of the first hole segment is larger than the inner diameter of the second hole segment, and a limiting step is formed at the connection between the first hole segment and the second hole segment; the limiting post includes a first post segment and a second post segment connected to each other, the outer diameter of the first post segment matches the inner diameter of the first hole segment, the outer diameter of the second post segment matches the inner diameter of the second hole segment, the elastic element and the first post segment are disposed in the first hole segment, and the second post segment is disposed in the second hole segment; When the end of the second column abuts against the outer wall of the guide post, the end of the first column near the second column is spaced apart from the limiting step; when the end of the second column is in the groove, the end of the first column near the second column abuts against the limiting step.

[0009] Optionally, the limiting mechanism further includes a cover plate and a connector, the cover plate covering the perforation, the cover plate being connected to the fixed template by the connector, and the end of the elastic member away from the limiting post being connected to the cover plate.

[0010] Optionally, the limiting mechanism further includes a limiting rod, which is disposed on the side of the rear mold fixing plate, the moving mold plate, the fixed mold plate and the sprue plate. The limiting rod is connected to the sprue plate and has a guide hole. The cover plate is at least partially disposed in the guide hole, and the guide hole is used to guide the cover plate when the fixed mold plate is opened.

[0011] Optionally, the limiting part includes an elastic element and a first magnetic element. One end of the first magnetic element is connected to the elastic element, and the other end of the first magnetic element abuts against the outer wall of the guide post by the elastic force of the elastic element. The docking part is a second magnetic element. When the limiting part and the docking part are engaged, the first magnetic element and the second magnetic element are attracted by magnetic force.

[0012] Optionally, the moving template has at least one first connecting hole on the side near the fixed template, and the fixed template has at least one second connecting hole corresponding to the first connecting hole; the three-plate mold structure also includes at least one nylon plug, one end of which is connected to the first connecting hole, and the other end of which is connected to the second connecting hole.

[0013] Optionally, the three-plate mold structure includes four guide pillars and four limiting mechanisms, wherein the limiting part of each limiting mechanism is used to engage with the docking part of each guide pillar to position the template.

[0014] This utility model's three-plate mold structure, when the fixed platen, moving platen, and rear mold fixing plate open to a set position away from the front mold fixing plate, can use a limiting mechanism to position the fixed platen, preventing it from rebounding when separated from the moving platen. Specifically, it prevents the fixed platen from rebounding towards the sprue plate, ensuring the distance between the sprue plate and the fixed platen does not decrease due to the rebound, thus not reducing the space for material to fall or the space for the robot to pick up material, and reducing the risk of the robot colliding with the mold. This application utilizes a limiting mechanism to position the fixed platen, which has low manufacturing cost, is applicable to various three-plate mold structures, does not occupy internal space of the three-plate mold, does not affect the robot's material handling, and has low maintenance costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the three-plate mold structure of this application in a closed state.

[0016] Figure 2 This is a schematic diagram of the three-plate mold structure of this application in the open state.

[0017] Figure 3 yes Figure 2 The diagram shows a cross-sectional view of the three-plate mold structure.

[0018] Figure 4 This is a partial cross-sectional structural diagram of the limiting mechanism of this application when it is in conjunction with the fixed template and guide column.

[0019] Figure 5 This is a schematic diagram of the guide post structure of this application. Detailed Implementation

[0020] The following specific embodiments illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification.

[0021] In the following description, reference is made to the accompanying drawings, which illustrate several embodiments of the present application. It should be understood that other embodiments may also be used, and changes in mechanical composition, structure, electrical and operational aspects may be made without departing from the spirit and scope of the present application. The following detailed description should not be considered limiting, and the terminology used herein is for describing particular embodiments only and is not intended to limit the present application.

[0022] Although the terms first, second, etc., are used in some instances to describe various elements herein, these elements should not be limited by these terms. These terms are only used to distinguish one element from another.

[0023] Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of a feature, step, operation, element, component, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition arise only when combinations of elements, functions, steps, or operations are inherently mutually exclusive in some way.

[0024] Figure 1 This is a schematic diagram of the three-plate mold structure of this application in a closed state. Figure 2 This is a schematic diagram of the three-plate mold structure of this application in the open state. Figure 3 yes Figure 2 The cross-sectional structural diagram of the three-plate mold structure shown is as follows: Figure 1 , Figure 2 and Figure 3 As shown, the three-plate mold structure includes a rear mold fixing plate 11, a moving template 12, a fixed template 13, a sprue plate 14, a front mold fixing plate 15, multiple guide pillars 16, and at least one limiting mechanism 17 stacked sequentially. The moving template 12, the fixed template 13, and the sprue plate 14 are provided with multiple through holes 101 for each guide pillar 16 to pass through. Each guide pillar 16 is disposed through each through hole 101. The two ends of each guide pillar 16 are respectively connected to the rear mold fixing plate 11 and the front mold fixing plate 15. The limiting mechanism 17 is connected to the fixed template 13 and is provided with a limiting part 171. The guide pillars 16 are provided with a docking part. When the fixed template 13, the moving template 12, and the rear mold fixing plate 11 are opened to a set position away from the front mold fixing plate 15, the limiting part 171 engages with the docking part to position the fixed template 13.

[0025] The three-plate mold structure of this application can position the fixed platen 13 by a limiting mechanism 17 when the fixed platen 13, moving platen 12, and rear mold fixing plate 11 are opened to a set position away from the front mold fixing plate 15. This prevents the fixed platen 13 from rebounding when it separates from the moving platen 12, i.e., prevents the fixed platen 13 from rebounding towards the sprue plate 14. The distance between the sprue plate 14 and the fixed platen 13 will not decrease due to the rebound of the fixed platen 13, thus not reducing the space for material to fall or the space for the robot to pick up material, and reducing the risk of the robot colliding with the mold. This application uses the limiting mechanism 17 to position the fixed platen 13, which has low manufacturing cost, is applicable to various three-plate mold structures, does not occupy the internal space of the three-plate mold, does not affect the robot's material handling, and has low maintenance cost.

[0026] Optionally, Figure 4 This is a partial sectional view of the limiting mechanism in this application when it is in conjunction with the fixed template and guide post, as shown below. Figure 3 and Figure 4 As shown, the fixed template 13 is provided with a through hole 102 communicating with the through hole 101. The limiting part 171 is at least partially disposed in the through hole 102. When the fixed template 13 is opened to the set position, the limiting part 171 extends out of the through hole 102 and engages with the mating part. In this embodiment, the through hole 102 is disposed on the side wall of the fixed template 13; the axis of the through hole 102 is perpendicular to the axis of the through hole 101.

[0027] Optionally, such as Figure 4 As shown, the limiting part 171 includes an elastic element 1711 and a limiting post 1712. One end of the limiting post 1712 is connected to the elastic element 1711, and the other end of the limiting post 1712 abuts against the outer wall of the guide post 16 by the elastic force of the elastic element 1711. The mating part is a groove 103 provided on the outer wall of the guide post 16. When the limiting part 171 engages with the mating part, the end of the limiting post 1712 is in the groove 103. When the three-plate mold structure is in the closed state, the end of the limiting post 1712 abuts against the outer wall of the guide post 16, and the elastic element 1711 is in a compressed state. When the three-plate mold structure gradually opens, the end of the limiting post 1712 slides on the guide post 16 until the end of the limiting post 1712 moves into the groove 103. At this time, the fixed template 13 moves to the set position, and the limiting mechanism 17 fixes the fixed template 13 and the guide post 16 together, which can effectively prevent the fixed template 13 from rebounding.

[0028] Optionally, Figure 5 This is a schematic diagram of the guide post structure of this application, as shown below. Figure 4 and Figure 5 As shown, the groove 103 is an annular groove provided on the outer wall of the guide post 16, and the annular groove is provided around the circumference of the guide post 16.

[0029] Optionally, such as Figure 4As shown, the perforation 102 includes a first hole segment 1021 and a second hole segment 1022 connected in sequence. The inner diameter of the first hole segment 1021 is larger than the inner diameter of the second hole segment 1022. A limiting step is formed at the connection between the first hole segment 1021 and the second hole segment 1022. The limiting post 1712 includes a first post segment and a second post segment connected to each other. The outer diameter of the first post segment matches the inner diameter of the first hole segment 1021, and the outer diameter of the second post segment matches the inner diameter of the second hole segment 1022. The elastic element 1711 and the first post segment are disposed in the first hole segment 1021, and the second post segment is disposed in the second hole segment 1022. When the end of the second column abuts against the outer wall of the guide post 16, the end of the first column near the second column is spaced apart from the limiting step; when the end of the second column is in the groove 103, the end of the first column near the second column abuts against the limiting step.

[0030] Optionally, such as Figure 2 , Figure 3 and Figure 4 As shown, the limiting mechanism 17 also includes a cover plate 172 and a connector 173. The cover plate 172 covers the through hole 102 and is connected to the fixed template 13 by the connector 173. The end of the elastic member 1711 away from the limiting post 1712 is connected to the cover plate 172. In this embodiment, the connector 173 is a bolt, and the limiting mechanism 17 includes two connectors 173. Both the cover plate 172 and the fixed template 13 are provided with screw holes, and the connectors 173 are correspondingly connected to the screw holes of the cover plate 172 and the fixed template 13.

[0031] Optionally, such as Figure 1 and Figure 2 As shown, the limiting mechanism 17 also includes a limiting rod 174, which is disposed on the side of the rear mold fixing plate 11, the moving mold plate 12, the fixed mold plate 13, and the sprue plate 14. The limiting rod 174 is connected to the sprue plate 14, and the limiting rod 174 is provided with a guide hole 104. The cover plate 172 is at least partially disposed in the guide hole 104, which guides the cover plate 172 when the fixed mold plate 13 is opened. In this embodiment, the length direction of the limiting rod 174 is parallel to the length direction of the guide post 16, and the guide hole 104 is disposed along the length direction of the limiting rod 174. When the three mold plate structure is opened, the cover plate 172 moves along the guide hole 104.

[0032] Optionally, the movable template 12 has at least one first connecting hole on the side near the fixed template 13, and the fixed template 13 has at least one second connecting hole corresponding to the first connecting hole; the three-plate mold structure also includes at least one nylon plug, one end of which is connected to the first connecting hole, and the other end of which is connected to the second connecting hole. When the fixed template 13 separates from the movable template 12, the nylon plug gradually comes out of the second connecting hole. Since the limiting mechanism 17 locks the fixed template 13 and the guide post 16 together, it can effectively prevent the fixed template 13 from rebounding.

[0033] Optionally, the three-plate mold structure includes four guide pillars 16 and four limiting mechanisms 17. The limiting part 171 of each limiting mechanism 17 is used to engage with the docking part of each guide pillar 16 to achieve positioning of the template 13.

[0034] In another embodiment, the limiting part 171 includes an elastic member 1711 and a first magnetic member. One end of the first magnetic member is connected to the elastic member 1711, and the other end of the first magnetic member abuts against the outer wall of the guide post 16 by the elastic force of the elastic member 1711. The docking part is a second magnetic member. When the limiting part 171 engages with the docking part, the first magnetic member and the second magnetic member are attracted by magnetic force.

[0035] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application.

Claims

1. A three-plate mold structure, characterized in that, The device includes a rear mold fixing plate, a moving mold plate, a fixed mold plate, a sprue plate, a front mold fixing plate, multiple guide pillars, and at least one limiting mechanism, all stacked sequentially. The moving mold plate, the fixed mold plate, and the sprue plate have multiple through holes for the guide pillars to pass through. Each guide pillar passes through the through holes, and both ends of each guide pillar are connected to the rear mold fixing plate and the front mold fixing plate, respectively. The limiting mechanism is connected to the fixed mold plate and has a limiting part. The guide pillars have docking parts. When the fixed mold plate, the moving mold plate, and the rear mold fixing plate open to a set position away from the front mold fixing plate, the limiting part engages with the docking part to position the fixed mold plate.

2. The three-plate mold structure as described in claim 1, characterized in that, The fixed template is provided with a through hole that connects to the through hole. The limiting part is at least partially disposed in the through hole. When the fixed template is opened to the set position, the limiting part extends out of the through hole and engages with the docking part.

3. The three-plate mold structure as described in claim 2, characterized in that, The limiting part includes an elastic element and a limiting post. One end of the limiting post is connected to the elastic element, and the other end of the limiting post abuts against the outer wall of the guide post by the elastic force of the elastic element. The docking part is a groove provided on the outer wall of the guide post. When the limiting part and the docking part are engaged, the end of the limiting post is in the groove.

4. The three-plate mold structure as described in claim 3, characterized in that, The groove is an annular groove provided on the outer wall of the guide post, and the annular groove is arranged around the circumference of the guide post.

5. The three-plate mold structure as described in claim 3, characterized in that, The perforation includes a first hole segment and a second hole segment connected in sequence. The inner diameter of the first hole segment is larger than the inner diameter of the second hole segment. A limiting step is formed at the connection between the first hole segment and the second hole segment. The limiting post includes a first post segment and a second post segment connected to each other. The outer diameter of the first post segment matches the inner diameter of the first hole segment, and the outer diameter of the second post segment matches the inner diameter of the second hole segment. The elastic element and the first post segment are disposed in the first hole segment, and the second post segment is disposed in the second hole segment. When the end of the second column abuts against the outer wall of the guide post, the end of the first column near the second column is spaced apart from the limiting step; when the end of the second column is in the groove, the end of the first column near the second column abuts against the limiting step.

6. The three-plate mold structure as described in claim 3, characterized in that, The limiting mechanism also includes a cover plate and a connector. The cover plate covers the perforation and is connected to the fixed template by the connector. The end of the elastic member away from the limiting post is connected to the cover plate.

7. The three-plate mold structure as described in claim 6, characterized in that, The limiting mechanism further includes a limiting rod, which is disposed on the side of the rear mold fixing plate, the moving mold plate, the fixed mold plate and the sprue plate. The limiting rod is connected to the sprue plate and has a guide hole. The cover plate is at least partially disposed in the guide hole, and the guide hole is used to guide the cover plate when the fixed mold plate is opened.

8. The three-plate mold structure as described in claim 3, characterized in that, The limiting part includes an elastic element and a first magnetic element. One end of the first magnetic element is connected to the elastic element, and the other end of the first magnetic element abuts against the outer wall of the guide post by the elastic force of the elastic element. The docking part is a second magnetic element. When the limiting part and the docking part are engaged, the first magnetic element and the second magnetic element are attracted by magnetic force.

9. The three-plate mold structure as described in claim 1, characterized in that, The moving template has at least one first connecting hole on the side near the fixed template, and the fixed template has at least one second connecting hole corresponding to the first connecting hole; the three-plate mold structure also includes at least one nylon plug, one end of which is connected to the first connecting hole, and the other end of which is connected to the second connecting hole.

10. The three-plate mold structure as described in any one of claims 1 to 9, characterized in that, The three-plate mold structure includes four guide pillars and four limiting mechanisms. The limiting part of each limiting mechanism is used to engage with the docking part of each guide pillar to position the template.

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