Contracting structure driven by bearing

Abstract

The utility model discloses an internal shrinkage structure driven by a bearing, which relates to the technical field of mould internal shrinkage structures, and comprises a lifting base station, a bearing fixing plate notch is arranged in the upper end of the lifting base station, a bearing mechanism is arranged in the bearing fixing plate notch, and the bearing mechanism is arranged in the bearing fixing plate notch. A first bearing sliding guide block is arranged on one side of the bearing mechanism, a second bearing sliding guide block is arranged on the other side of the bearing mechanism, a lower die table is arranged above the bearing mechanism, an inner die is arranged at the upper end of the lower die table and fixedly connected with the lower die table, and a push plate is arranged outside the bottom end of the inner die. And an inward shrinkage shovel base is arranged in the lower mold table, the lower end of the inward shrinkage shovel base penetrates through the bearing mechanism and extends into the lifting base table, the upper end of the inward shrinkage shovel base penetrates through the lower mold table and extends into the inner mold, and the problems that the precision of direct connection transmission of an existing transmission mechanism and a core pulling assembly is low, and the assembly is prone to being damaged are solved through the scheme.

Description

TECHNICAL FIELD

[0001] The utility model relates to a mould inner shrink structure technical field, concretely is a kind of inner shrink structure by bearing transmission. BACKGROUND

[0002] With the continuous development of society, the continuous detail of product, in injection molding production, some products have side undercut in the direction of the inner wall of the mold, at this time, it is necessary to make two directions of inner core-pulling;

[0003] The traditional inner core-pulling structure mainly adopts inclined guide pillar or inclined slider to cooperate with the direct transmission of transmission mechanism to realize the core-pulling effect.

[0004] However, the direct transmission of transmission mechanism and core-pulling assembly has low precision, which easily leads to damage of the assembly. Therefore, the present application provides an inner shrink structure by bearing transmission to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model discloses a kind of inner shrink structures by bearing transmission, to solve the precision of the direct transmission of existing transmission mechanism and core-pulling assembly in the above background technique is low, easily leading to the problem of damage of assembly.

[0006] To achieve the above object, the utility model provides the following technical scheme: an inner shrink structure by bearing transmission, including lifting base, the inside of the upper end of the lifting base is provided with bearing fixed plate slot, the inside of the bearing fixed plate slot is provided with bearing mechanism, one side of the bearing mechanism is provided with first bearing sliding guide block, the other side of the bearing mechanism is provided with second bearing sliding guide block, the upper of the bearing mechanism is provided with lower mould platform, the upper end of the lower mould platform is provided with inner mould, and inner mould and lower mould platform are fixedly connected, the outside of the bottom end of the inner mould is provided with push plate, the inside of the lower mould platform is provided with inner shrink spade base, the lower end of the inner shrink spade base penetrates bearing mechanism and extends to the inside of lifting base, the upper end of the inner shrink spade base penetrates lower mould platform and extends to the inside of inner mould, the both sides of the end of the inner shrink spade base are provided with inner shrink sliding block, and inner shrink sliding block extends to the outside of inner mould, driven plate is installed on the outer wall of the inner shrink spade base, and the driven plate is arranged on the upper surface of bearing mechanism.

[0007] Preferably, the lower end of the lifting base is provided with a jacking mechanism, and the output end of the jacking mechanism is in contact with the lifting base.

[0008] Preferably, the bearing mechanism includes a bearing fixed plate, the lower end of one side of the bearing fixed plate and the upper end of the other side are provided with bearing grooves, bearings are installed in the bearing grooves, and the bearings are rotatably connected with the bearing fixed plate through shafts.

[0009] Preferably, the bearing fixing plate is internally provided with a sliding groove, the outer wall of the inner retracting spade base is provided with an inner retracting spade base sliding block, and the bearing fixing plate is in sliding connection with the inner retracting spade base sliding block through the sliding groove.

[0010] Preferably, the first bearing sliding guide block is internally provided with a downward inclined groove, and the second bearing sliding guide block is internally provided with an upward inclined groove.

[0011] Preferably, the outer wall of both sides of the end of the inner retracting spade base is provided with an inclined guide groove, the inner side of the inner retracting sliding block is provided with a guide block, the outer wall of the inner retracting sliding block is provided with a buckle pattern, and the buckle pattern and the guide block are integrally formed on the inner retracting sliding block.

[0012] Preferably, the front end and the rear end of the lifting base are provided with limiting grooves, and the front end and the rear end of the inner retracting spade base sliding block are provided with limiting rods which penetrate through the driven plate and extend into the limiting grooves.

[0013] Preferably, the front end of the lower mold base is provided with a thimble oil way pipe, and the inner side of the lower mold base is provided with a thimble which is in communication with the thimble oil way pipe.

[0014] Preferably, the four corners of the upper end of the lifting base are provided with buffer columns.

[0015] Preferably, the lower end of the first bearing sliding guide block and the second bearing sliding guide block are provided with a plurality of positioning bolts.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] The inner retracting spade base is opened or reset through the transmission of the bearing mechanism to realize the inner core pulling effect, the thimble drives the push plate to be pushed out, demolding is facilitated, the inner retracting spade base, the bearing mechanism and the lifting base are in nested movable connection, compared with the traditional direct transmission, the precision is higher, the service life of each component is prolonged, and the components are convenient to maintain and replace, and the problems of low precision of the direct transmission of the existing transmission mechanism and core pulling assembly and easy damage of the components are solved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of the utility model;

[0019] Figure 2 It is a lower mold base and push plate dismounting state structure schematic view of the utility model;

[0020] Figure 3 It is a connection state structure view of the inner retracting sliding block and the inner retracting spade base of the utility model;

[0021] Figure 4 is a connection state schematic view of the inner retracting spade and bearing mechanism of the utility model;

[0022] Figure 5 is a bottom surface schematic view of the connection state of the inner retracting spade and bearing mechanism of the utility model;

[0023] In the figure: 1, lifting base; 2, bearing fixed plate notch; 3, bearing mechanism; 301, bearing fixed plate; 302, bearing groove; 303, bearing; 304, rotating shaft; 305, sliding groove; 4, first bearing sliding guide block; 5, second bearing sliding guide block; 6, positioning bolt; 7, driven plate; 8, buffer column; 9, lower die base; 10, push plate; 11, inner die; 12, inner retracting spade; 121, oblique guide groove; 13, inner retracting sliding block; 131, guide block; 132, buckle thread; 14, inner retracting spade sliding block; 15, thimble oil line pipe; 16, downward inclined groove; 17, upward inclined groove; 18, limiting groove; 19, limiting rod. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0025] Please refer to Figures 1-5The utility model provides an embodiment: a kind of retraction structure by bearing drive, including lifting pedestal 1, the inside of the upper end of lifting pedestal 1 is provided with bearing fixed plate notch 2, the inside of bearing fixed plate notch 2 is provided with bearing mechanism 3, one side of bearing mechanism 3 is provided with first bearing sliding guide block 4, the other side of bearing mechanism 3 is provided with second bearing sliding guide block 5, the top of bearing mechanism 3 is provided with lower die table 9, the upper end of lower die table 9 is provided with inner mould 11, and inner mould 11 is fixedly connected with lower die table 9, the outside of inner mould 11 bottom end is provided with push plate 10, the inside of lower die table 9 is provided with retraction spade base 12, the lower end of retraction spade base 12 penetrates bearing mechanism 3 and extends to the inside of lifting pedestal 1, the upper end of retraction spade base 12 penetrates lower die table 9 and extends to the inside of inner mould 11, both sides of retraction spade base 12 end are provided with retraction sliding block 13, and retraction sliding block 13 extends to the outside of inner mould 11, driven plate 7 is installed on the outer wall of retraction spade base 12, and driven plate 7 is arranged on the upper surface of bearing mechanism 3, the lower end of lifting pedestal 1 is provided with jacking mechanism, the output end of jacking mechanism is contact connected with lifting pedestal 1, bearing mechanism 3 includes bearing fixed plate 301, the lower end of one side of bearing fixed plate 301 and the upper end of the other side are provided with bearing groove 302, bearing 303 is installed in the inside of bearing groove 302, and bearing 303 is rotatably connected with bearing fixed plate 301 by pivot 304, the inside of bearing fixed plate 301 is provided with sliding slot 305, retraction spade base sliding block 14 is installed on the outer wall of retraction spade base 12, and bearing fixed plate 301 is slidably connected with retraction spade base sliding block 14 by sliding slot 305, the inside of first bearing sliding guide block 4 is provided with down inclined groove 16, the inside of second bearing sliding guide block 5 is provided with up inclined groove 17, a plurality of positioning bolts 6 are installed in the lower end of first bearing sliding guide block 4 and second bearing sliding guide block 5, the outer wall of both sides of retraction spade base 12 end is provided with inclined guide slot 121, the inside of retraction sliding block 13 is provided with guide block 131, buckle thread 132 is arranged on the outer wall of retraction sliding block 13, buckle thread 132 and guide block 131 are integrally formed with retraction sliding block 13, retraction sliding block 13 is slidably connected with inclined guide slot 121 on retraction spade base 12 by guide block 131;

[0026] When running, the jacking mechanism drives the lifting base 1 to rise through jacking, in the process, the bearing mechanism 3 moves upward along the upward inclined groove 17 of the first bearing sliding guide block 4 through the internal sliding groove 305 and the first bearing sliding guide block 4, moves horizontally upward along the inner retracting spade base sliding block 14, plays a role of auxiliary guide, drives the driven plate 7 and the inner retracting spade base 12 to move upward, when the inner retracting spade base 12 moves upward, the inner retracting sliding block 13 is pushed to expand to both sides through the oblique guide groove 121 on both sides, at this time, the upper die drives the outer die to move downward, and the inner mold 11 is covered outside the outer die, after injection molding, the product can form a buckle structure with the surface texture of the inner retracting sliding block 13 on both sides, after molding, the jacking mechanism resets, the lifting base 1 moves downward with the reset, in the process, the bearing mechanism 3 moves downward along the downward inclined groove 16 in the second bearing sliding guide block 5, so that the supported driven plate 7 and the inner retracting spade base 12 move downward, because the inner retracting spade base 12 moves downward, the inner retracting sliding block 13 on both sides of the end part is retracted under the action of the oblique guide groove 121, at this time, the upper die moves upward to reset, the ejector pin oil way pipe 15 drives the ejector pin to extend, so that the push plate 10 moves upward, and the product demolding is completed.

[0027] Please refer to Figure 2 The front end and the rear end of the lifting base 1 are provided with limiting grooves 18, the front end and the rear end of the inner retracting spade base sliding block 14 are provided with limiting rods 19, and the limiting rods 19 penetrate through the driven plate 7 and extend into the limiting grooves 18, when the bearing mechanism 3 drives the driven plate 7 to rise and fall with the lifting base 1, because of the action of the limiting rods 19 and the limiting grooves 18, the driven plate 7 can avoid horizontal movement and deviation.

[0028] Further, the front end of the lower die base 9 is provided with the ejector pin oil way pipe 15, the inside of the lower die base 9 is provided with the ejector pin (not shown in the figure) connected with the ejector pin oil way pipe 15, the ejector pin oil way pipe 15 is used to drive the ejector pin to extend, drive the push plate 10 to move upward, and realize the demolding of the product.

[0029] Further, the four corners of the upper end of the lifting base 1 are provided with the buffer columns 8, so that the lifting base 1 can play a certain buffering role when reaching the position of the lower die base 9, and the service life is prolonged.

[0030] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims.

Claims

1. A retractable structure driven by bearings, comprising a lifting base (1), characterized in that: The upper end of the lifting platform (1) is provided with a bearing fixing plate slot (2), and a bearing mechanism (3) is provided inside the bearing fixing plate slot (2). A first bearing sliding guide block (4) is provided on one side of the bearing mechanism (3), and a second bearing sliding guide block (5) is provided on the other side of the bearing mechanism (3). A lower mold platform (9) is provided above the bearing mechanism (3). An inner mold (11) is provided at the upper end of the lower mold platform (9), and the inner mold (11) is fixedly connected to the lower mold platform (9). A push plate is provided on the outside of the bottom end of the inner mold (11). (10) An inwardly retractable shovel base (12) is provided inside the lower mold platform (9). The lower end of the inwardly retractable shovel base (12) passes through the bearing mechanism (3) and extends into the interior of the lifting base platform (1). The upper end of the inwardly retractable shovel base (12) passes through the lower mold platform (9) and extends into the interior of the inner mold (11). Inwardly retractable sliders (13) are provided on both sides of the end of the inwardly retractable shovel base (12), and the inwardly retractable sliders (13) extend to the outside of the inner mold (11). A driven plate (7) is installed on the outer wall of the inwardly retractable shovel base (12), and the driven plate (7) is provided on the upper surface of the bearing mechanism (3).

2. The inwardly retractable structure driven by bearings according to claim 1, characterized in that: The lower end of the lifting base (1) is provided with a lifting mechanism, and the output end of the lifting mechanism is in contact with the lifting base (1).

3. The inwardly retractable structure driven by bearings according to claim 1, characterized in that: The bearing mechanism (3) includes a bearing fixing plate (301). The lower end of one side and the upper end of the other side of the bearing fixing plate (301) are provided with bearing grooves (302). A bearing (303) is installed inside the bearing groove (302), and the bearing (303) is rotatably connected to the bearing fixing plate (301) through a rotating shaft (304).

4. The inwardly retractable structure driven by bearings according to claim 3, characterized in that: The bearing fixing plate (301) is provided with a sliding groove (305) inside, and the inner shovel base sliding block (14) is installed on the outer wall of the inner shovel base (12), and the bearing fixing plate (301) is slidably connected to the inner shovel base sliding block (14) through the sliding groove (305).

5. The inwardly retractable structure driven by bearings according to claim 1, characterized in that: The first bearing sliding guide block (4) has a downward inclined groove (16) inside, and the second bearing sliding guide block (5) has an upward inclined groove (17) inside.

6. The inwardly retractable structure driven by a bearing according to claim 1, characterized in that: The outer walls on both sides of the inward-shrinking shovel base (12) are provided with inclined guide grooves (121), the inner side of the inward-shrinking slider (13) is provided with guide blocks (131), and the outer wall of the inward-shrinking slider (13) is provided with snap-fit ​​patterns (132). The snap-fit ​​patterns (132) and the guide blocks (131) are integrally formed with the inward-shrinking slider (13). The inward-shrinking slider (13) is slidably connected to the inclined guide grooves (121) on the inward-shrinking shovel base (12) through the guide blocks (131).

7. The inwardly retractable structure driven by bearings according to claim 4, characterized in that: The lifting platform (1) is provided with a limit groove (18) at both the front and rear ends. The sliding block (14) of the inward shovel base is provided with a limit rod (19) at both the front and rear ends. The limit rod (19) passes through the driven plate (7) and extends into the interior of the limit groove (18).

8. The inwardly retractable structure driven by a bearing according to claim 1, characterized in that: The front end of the lower mold platen (9) is equipped with an ejector oil pipe (15), and the interior of the lower mold platen (9) is equipped with ejector pins that are connected to the ejector oil pipe (15).

9. The inwardly retractable structure driven by a bearing according to claim 1, characterized in that: The four corners of the upper end of the lifting platform (1) are equipped with buffer columns (8).

10. The inwardly retractable structure driven by a bearing according to claim 1, characterized in that: Multiple positioning bolts (6) are installed at the lower ends of the first bearing sliding guide block (4) and the second bearing sliding guide block (5).

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