CN210880633U

CN210880633U - Injection mold

Info

Publication number: CN210880633U
Application number: CN201921591566.0U
Authority: CN
Inventors: 陈锐
Original assignee: Shanghai Liangqin Industry Co ltd
Current assignee: Shanghai Liangqin Industry Co ltd
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2020-06-30
Anticipated expiration: 2029-09-23

Abstract

The utility model relates to an injection mold, including cover half and movable mould, one side rigid coupling that the cover half is close to the movable mould has a plurality of square guide pillars, the square hole that can insert the side guide pillar is all seted up to the position that the movable mould corresponds the square guide pillar, the inboard in square hole all can be dismantled and be connected with the antifriction plate, all can dismantle in each side of square guide pillar lateral wall and be connected with the wearing plate, the wearing plate slides and connects in the antifriction plate, the utility model has the advantages of maintenance cost is low after the square guide pillar wearing and tearing.

Description

Injection mold

Technical Field

The utility model belongs to the technical field of injection mold's technique and specifically relates to a direction guide pillar structure of injection mold is related to.

Background

When the injection mold is closed, in order to ensure the accuracy of the shape and the size of a cavity, the mold should be closed according to a certain direction and position, so a guiding and positioning system is needed to be arranged, and the most common guiding and positioning system is that 4 pairs of guide columns and guide sleeves which are matched with each other are arranged around the cavity of the mold. The guide system mainly has three functions of guiding, positioning and bearing the lateral pressure generated in the injection molding process.

When large-scale, deep-cavity, thin-wall and high-precision plastic parts are molded, high mold closing precision is adopted between a movable mold and a fixed mold. For a large thin-wall container, if the eccentric die assembly of the movable die and the fixed die causes uneven wall thickness, feeding on one side is faster than feeding on the other side, and because of the reasons of expansion with heat and contraction with cold, if the temperature difference of the front die and the rear die and the size of the die reach a certain amount, if a round guide pillar is used, the round guide pillar cannot be precisely matched, even the round guide pillar cannot be burnt, the die cannot be opened and closed, and the like, so that a matching gap exists between the round guide pillar and the round guide sleeve, and accurate. For the plastic part with an asymmetric thin-wall shape, the injection pressure can also generate lateral thrust, and if the lateral force is completely borne by the guide pillar, the guide pillar is clamped and damaged or the abrasion is increased during die sinking, so that the guide pillar and the guide sleeve are matched to fail.

In order to solve the problems, a square guide pillar and a square guide sleeve structure are generally adopted to serve as the guide of a fixed die and a movable die, and the die has the biggest characteristic that the fit clearance is zero, so that the positioning precision can be improved, and the die is suitable for occasions where large and medium dies need to be accurately positioned. But at present in the use, because square guide pillar and square guide pin bushing fit clearance be zero, therefore square guide pillar is general comparatively serious in the use wearing and tearing, uses after a period, just need change, and ware cost of maintenance is higher.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an injection mold has the low advantage of maintenance cost after the square guide pillar wearing and tearing.

The above object of the present invention is achieved by the following technical solutions:

the utility model provides an injection mold, includes cover half and movable mould, one side rigid coupling that the cover half is close to the movable mould has a plurality of square guide pillars, the square hole that can insert the side guide pillar is all seted up to the position that the movable mould corresponds the square guide pillar, the inboard all detachable of square hole is connected with the antifriction plate, all detachable of each side of square guide pillar lateral wall is connected with the wearing plate, the wearing plate slides and connects in the antifriction plate.

Through adopting above-mentioned technical scheme, in the use, wear pad and wear plate are mutually supporting and form and slide to guarantee the accurate location of movable mould and top mould, and when wear pad and wear plate produced wearing and tearing and lead to positioning accuracy to reduce, directly dismantle the wear pad that damages get off with the wear plate and change can, need not to change whole side guide pillar, reduce cost of maintenance, convenient to use.

The utility model discloses further set up to: the locating slot has all been seted up to each side in square hole, all inserting of antifriction plate is located the locating slot, and the surface of antifriction plate all stands out in the inner wall in square hole.

Through adopting above-mentioned technical scheme, through the constant head tank that adopts, completion antifriction plate that can be convenient is in the location of square hole, convenient to use.

The utility model discloses further set up to: the positions of the square guide pillars corresponding to the square holes are provided with annular grooves, the wear-resistant pieces are inserted into the grooves, and the outer sides of the wear-resistant pieces can protrude out of the side walls of the square guide pillars.

Through adopting above-mentioned technical scheme, through the recess that adopts, completion antifriction plate that can be convenient is at the location on the square guide post, convenient to use.

The utility model discloses further set up to: the wear-resistant plate and the wear-resistant plate are both copper-based graphite plates.

By adopting the technical scheme, the copper-based graphite plate has the characteristics of high temperature resistance and high strength, and can slide at high speed at high temperature without lubrication.

The utility model discloses further set up to: the outer sides of the wear-resisting plates and the wear-resisting sheets are provided with sunk grooves, and set screws with end portions in threaded connection with the inner walls of the square guide columns or the square holes are inserted into the sunk grooves.

Through adopting above-mentioned technical scheme, the holding screw of adoption, can be convenient for square guide pillar and wear-resisting plate fixed with dismantle and square hole and wear-resisting plate fixed with dismantle, convenient to use, easy operation.

The utility model discloses further set up to: the inclined plane that can butt each other all is seted up to the one side that is close to each other that faces two wear plates mutually, and the inclined plane that can butt each other is all seted up to the one side that is close to each other of two adjacent wear plates.

Through adopting above-mentioned technical scheme, set up the both sides butt each other that has the inclined plane to guarantee adjacent wear plate through the both sides of wear plate.

The utility model discloses further set up to: the wear-resistant plate is characterized in that slots are formed in the upper sides of the grooves, inserting blocks capable of being inserted into the slots are fixedly connected to the upper sides of the wear-resistant plates, and the width of each groove is equal to the sum of the width of each wear-resistant plate and the width of each inserting block.

Through adopting above-mentioned technical scheme, can further just with the location of wear pad and recess.

The utility model discloses further set up to: the upper side of the groove is provided with a slot, the upper side of the wear-resistant sheet is fixedly connected with an insert block which can be inserted into the slot, the width of the groove is equal to the sum of the width of the wear-resistant sheet and the width of the insert block, a positioning strip with the same width as the width of the insert block is inserted into the lower side of the groove, and the positioning strip is connected to the square guide pillar through a bolt.

Through adopting above-mentioned technical scheme, during the use, directly place the wear pad in the recess, then upwards slide the wear pad, make the inserted block insert locate the slot in, then insert the location strip and locate between the lower extreme of recess and the wear pad lower extreme to pass through the bolt fastening with the location strip in the recess, can accomplish the fixed of wear pad, the wear pad surface need not the trompil and inserts the bolt, has guaranteed the intensity of wear pad.

To sum up, the utility model discloses a beneficial technological effect does:

1. in the use process, the wear-resistant sheet and the wear-resistant plate are matched with each other and form sliding, so that the precise positioning of the movable die and the top die is ensured, and when the positioning precision is reduced due to the abrasion of the wear-resistant sheet and the wear-resistant plate, the damaged wear-resistant sheet and the wear-resistant plate are directly disassembled for replacement, so that the whole square guide column does not need to be replaced, the maintenance cost is reduced, and the use is convenient;

2. during the use, directly place the wear pad in the recess, then upwards slide the wear pad, make the inserted block insert locate the slot in, then insert the location strip and locate between the lower extreme of recess and the wear pad lower extreme to pass through the bolt fastening with the location strip in the recess, can accomplish the fixed of wear pad, the wear pad surface need not the trompil and inserts the bolt, has guaranteed the intensity of wear pad.

Drawings

Fig. 1 is a schematic overall structure diagram of a first embodiment of the present invention.

Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.

Fig. 3 is a schematic view of a bevel structure according to a first embodiment of the present invention.

Fig. 4 is a schematic structural diagram of an insert block according to a second embodiment of the present invention.

Fig. 5 is a schematic structural view of a positioning strip according to a third embodiment of the present invention.

In the figure, 1, a fixed die; 2. moving the mold; 3. a square guide post; 31. a groove; 311. a wear resistant sheet; 3111. inserting a block; 312. a slot; 4. a square hole; 41. positioning a groove; 42. a wear plate; 5. a bevel; 6. sinking a groove; 61. tightening the screw; 7. a positioning bar; 71. a containing groove; 72. and (5) fixing the bolt.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The first embodiment is as follows: referring to fig. 1, for the utility model discloses an injection mold, including cover half 1 and movable mould 2, one side rigid coupling that cover half 1 is close to movable mould 2 has a plurality of square guide pillars 3, movable mould 2 corresponds square guide pillar 3's position and has all been seted up and to insert the square hole 4 of establishing square guide pillar 3, constant head tank 41 has all been seted up to each side of square hole 4, all insert in the constant head tank 41 and be equipped with antifriction plate 42, antifriction plate 42 adopts copper-based graphite plate to make, antifriction plate 42's the outside is suddenly in the inside wall of square hole 4, inclined plane 5 has all been seted up to one side of being close to each other of two adjacent antifriction plate 42, can make the mutual butt of lateral wall of two adjacent antifriction plate 42 through inclined plane 5, heavy groove 6 has all been seted up in antifriction plate 42's the outside, all insert in heavy groove 6 and be equipped with holding screw.

The circumferential surface of the square guide pillar 3 corresponding to the square hole 4 is provided with an annular groove 31, each side of the groove 31 is inserted with a wear-resistant sheet 311, the outer side of each wear-resistant sheet 311 can protrude out of each side wall of the square guide pillar 3, one side of each two adjacent wear-resistant sheets 311 close to each other is provided with an inclined surface 5, and the side walls of the two adjacent wear-resistant sheets 311 can be abutted to each other through the inclined surfaces 5. The outer sides of the wear-resistant pieces 311 are provided with sunk grooves 6, set screws 61 are inserted into the sunk grooves 6, and the end parts of the set screws 61 are in threaded connection with the inner bottom surfaces of the grooves 31.

The implementation principle of the embodiment is as follows: in the use, wear pad 311 mutually supports with wear-resisting plate 42 and forms and slide to guarantee the accurate location of movable mould 2 and top mould, and when wear-resisting plate 311 produced wearing and tearing with wear-resisting plate 42 and lead to positioning accuracy to reduce, directly dismantle the wear pad 311 who damages get off with wear-resisting plate 42 and change can, need not to change whole side guide pillar 3, reduce cost of maintenance, convenient to use.

Example two: an injection mold, compared with the first embodiment, the difference lies in: the slot 312 is opened on the upper side of the recess 31, the insert block 3111 is fixedly connected on the upper side of the wear-resistant piece 311, the insert block 3111 can be inserted into the slot 312, and the width of the recess 31 is the sum of the width of the wear-resistant piece 311 and the width of the insert block 3111.

Compared with the first embodiment, the advantages are that: the use of the block 3111 in cooperation with the slot 312 further facilitates the positioning of the wear plate 311 and the recess 31.

Example three: an injection mold, compared with the first embodiment, the difference lies in: the positioning strip 7 and the positioning bolt are used for replacing the sunk groove 6 of the wear-resistant sheet 311 and the set screw 61.

The slot 312 is opened on the upper side of recess 31, the upper side of wear-resisting piece 311 all is rigid connected with inserts 3111, insert 3111 can insert and locate in the slot 312, the recess 31 width is wear-resisting piece 311 width and inserts the sum of 3111 width, recess 31 downside is still inserted and is equipped with location strip 7, the width of location strip 7 is the same with the strip width of inserting, the storage tank 71 has been opened to the outside of location strip 7, the interpolation of storage tank 71 is equipped with the fixing bolt 72 of tip threaded connection in recess 31 bottom surface.

Compared with the first embodiment, the advantages are that: during the use, directly place wear pad 311 in recess 31, then slide wear pad 311 upwards, make the inserted block 3111 insert and locate in slot 312, then insert the location strip 7 and locate between the lower extreme of recess 31 and the lower extreme of wear pad 311 to pass through the bolt fastening with location strip 7 in recess 31, can accomplish the fixed of wear pad 311, wear pad 311 surface need not to open a hole and inserts the bolt, has guaranteed the intensity of wear pad 311.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides an injection mold, includes cover half (1) and movable mould (2), one side rigid coupling that cover half (1) is close to movable mould (2) has a plurality of square guide posts (3), its characterized in that: the novel wear-resisting device is characterized in that square holes (4) capable of being inserted with the square guide columns (3) are formed in the positions, corresponding to the square guide columns (3), of the movable mold (2), wear-resisting plates (42) are detachably connected to the inner sides of the square holes (4), wear-resisting plates (311) are detachably connected to the side walls of the square guide columns (3), and the wear-resisting plates (311) are connected to the wear-resisting plates (42) in a sliding mode.

2. An injection mold according to claim 1, wherein: locating grooves (41) are formed in each side of the square hole (4), the wear-resisting plates (42) are inserted into the locating grooves (41), and the outer surfaces of the wear-resisting plates (42) protrude out of the inner wall of the square hole (4).

3. An injection mold according to claim 1, wherein: the square guide pillar (3) is provided with an annular groove (31) corresponding to the square hole (4), the wear-resistant pieces (311) are inserted into the groove (31), and the outer sides of the wear-resistant pieces (311) can protrude out of the side walls of the square guide pillar (3).

4. An injection mold according to claim 1, wherein: the wear-resisting plate (311) and the wear-resisting plate (42) both adopt copper-based graphite plates.

5. An injection mold according to claim 1, wherein: heavy grooves (6) are formed in the outer sides of the wear-resisting plates (42) and the wear-resisting plates (311), and set screws (61) with end portions connected to the inner walls of the square guide columns (3) or the square holes (4) in a threaded mode are inserted into the heavy grooves (6).

6. An injection mold according to claim 1, wherein: the inclined plane (5) that can butt each other all seted up on the one side that is close to each other of two wear-resisting plate (311) mutually, inclined plane (5) that can butt each other are all seted up on the one side that is close to each other of two adjacent wear-resisting plate (42).

7. An injection mould according to claim 3, characterized in that: the upper side of the groove (31) is provided with a slot (312), the upper side of the wear-resistant sheet (311) is fixedly connected with an insert block (3111) capable of being inserted into the slot (312), and the width of the groove (31) is equal to the sum of the width of the wear-resistant sheet (311) and the width of the insert block (3111).

8. An injection mould according to claim 3, characterized in that: the upper side of the groove (31) is provided with a slot (312), the upper side of the wear-resistant sheet (311) is fixedly connected with an insert block (3111) capable of being inserted into the slot (312), the width of the groove (31) is equal to the sum of the width of the wear-resistant sheet (311) and the width of the insert block (3111), the lower side of the groove (31) is also inserted with a positioning strip (7) with the same width as the insert block (3111), and the positioning strip (7) is connected with the square guide pillar (3) through a bolt.