CN212860245U

CN212860245U - Double-oil-cylinder slide self-locking structure of plastic mold and plastic mold

Info

Publication number: CN212860245U
Application number: CN202021350967.XU
Authority: CN
Inventors: 殷正飞; 李道协
Original assignee: Senjun Excellent Prec Mold Shenzhen Co ltd
Current assignee: Senjun precision manufacturing (Shenzhen) Co.,Ltd.
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2021-04-02
Anticipated expiration: 2030-07-10

Abstract

The utility model discloses a plastic mould's double cylinder capable position auto-lock structure reaches plastic mould including this structure. A double-oil-cylinder slide self-locking structure of a plastic mold comprises a slide, an oil cylinder and a shovel machine, wherein an oil cylinder connecting block is fixedly arranged at one end of an oil cylinder piston rod, the oil cylinder connecting block is in clearance connection with the shovel machine, and first locking structures used for limiting the shovel machine to move relative to the plastic mold are respectively arranged on two side faces of the shovel machine; and a second locking structure for limiting the movement of the slide relative to the plastic mold is arranged on the surface of the slide opposite to the shovel machine. The utility model discloses avoid the limitation of single structure, guaranteed injection moulding product's outward appearance and quality, avoided using the auto-lock hydro-cylinder to need increase the problem of mould embryo, saved mould manufacturing cost and the cost of moulding plastics.

Description

Double-oil-cylinder slide self-locking structure of plastic mold and plastic mold

Technical Field

The utility model relates to a mould manufacturing technology field especially relates to a plastic mould's capable position of dual cylinder auto-lock structure and plastic mould.

Background

At present, for the existing structure of the oil cylinder slide mold, the traditional oil cylinder mold is generally characterized in that the slide is connected between oil cylinders, or a shovel machine is additionally arranged to turn by 90 degrees to reduce injection pressure, or a self-locking oil cylinder is used to prevent the slide from retreating. The existing oil cylinder slide mold uses a non-self-locking oil cylinder and cannot bear the injection molding pressure for the slide during glue injection, so that burrs are formed on a product, more glue is produced on the product, and a defective product is produced. By using the self-locking oil cylinder, the size and the length of the oil cylinder are required to be increased, the cost of the oil cylinder is increased by several times, a mold is enlarged, an injection molding machine is enlarged, and the cost of the mold and the cost of injection molding are increased. Therefore, the prior art is to be improved.

SUMMERY OF THE UTILITY MODEL

To the not enough of above-mentioned prior art, the utility model provides a double cylinder capable position auto-lock structure reaches plastic mould including this structure, specific technical scheme as follows:

a double-oil-cylinder slide self-locking structure of a plastic mold comprises a slide, an oil cylinder and a shovel machine, wherein one end of an oil cylinder piston rod is fixedly provided with an oil cylinder connecting block, a connecting step is arranged on the oil cylinder connecting block, a first clamping groove is arranged on the surface of the shovel machine opposite to the oil cylinder, the connecting step is clamped into the first clamping groove and is in clearance connection with the first clamping groove, and a first delay vacancy avoiding position is arranged between the upper surface of the inner side of the first clamping groove and the upper surface of the connecting step; two side surfaces of the shovel are respectively provided with a through hole along the direction of the first clamping groove, the through holes are communicated with the first delay space-avoiding position, a push block is arranged in each through hole, and one end, far away from the first clamping groove, of each push block is provided with a first locking structure used for limiting the shovel to move relative to the plastic mold; a second clamping groove is formed in the opposite surface of the line position and the shovel machine, a T-shaped sliding block is fixedly arranged on the opposite surface of the shovel machine and the line position, and the T-shaped sliding block is clamped in the second clamping groove and is in sliding connection with the second clamping groove; and a second locking structure for limiting the movement of the slide relative to the plastic mold is arranged at the joint of the shovel machine and the slide.

Furthermore, the first locking structure comprises a limiting structure, a moving structure and a pressing strip which are fixedly arranged on the shovel machine, the pressing strip is fixed on the plastic rubber mold, and the moving structure is respectively in sliding connection with the limiting structure and the pressing strip.

Furthermore, the limiting structure is a limiting step arranged on the shovel or a shovel guide block fixedly connected with the shovel.

Furthermore, the motion structure comprises a first elastic component, a push block fixing component, a locking block and a second elastic component which are connected in sequence; one side of the locking block is connected with the limiting structure in a sliding manner, and the other side of the locking block is connected with the pressing bar in a sliding manner; one end of the first elastic component is fixedly connected with the push block fixing piece, and the other end of the first elastic component is connected with the push block; one end of the second elastic component is fixedly connected with the locking block, and the other end of the second elastic component is connected with the plastic mold.

Further, the first elastic member and the second elastic member are both springs.

Furthermore, a second delay vacancy avoiding position is arranged between the bottom surface of the T-shaped sliding block and the opposite surface of the second clamping groove.

Furthermore, the second locking structure comprises a self-locking insert which is fixedly arranged on the face of the shovel machine opposite to the slide, and the self-locking insert is provided with a first step face parallel to the moving direction of the piston rod of the oil cylinder; and a second step surface matched with the first step surface is arranged on the surface of the slide opposite to the shovel machine, and the first step surface is matched with the straight surface of the second step surface.

Furthermore, the number of the T-shaped sliding blocks and the number of the second clamping grooves are respectively 2; the self-locking insert comprises 1 large self-locking insert and 2 small self-locking inserts, the large self-locking insert is arranged between 2T-shaped sliding blocks, and the 2 small self-locking inserts are respectively arranged on one sides of the 2T-shaped sliding blocks far away from the large self-locking insert.

On the other hand, a plastic mold is provided, which comprises the double-cylinder slide self-locking structure.

Furthermore, the plastic mould also comprises a front mould, the oil cylinder is fixedly connected with the front mould through an oil cylinder fixing block, and the pressing strip is fixed on the front mould.

Compared with the prior art, the utility model discloses possess following beneficial effect:

1. the oil cylinder slide replaces a floating plate structure, so that the die structure is simplified, and the die stability is improved.

2. The dual self-locking structure is used, so that the limitation of a single structure is avoided, and the appearance and the quality of an injection molding product are ensured.

3. The dual self-locking structure is used, the situation that a self-locking oil cylinder is not provided with enough space to place a self-locking oil cylinder is avoided due to the fact that a mould blank is required to be enlarged and an injection molding machine is required to be added when the self-locking oil cylinder is used. The manufacturing cost and the injection molding cost of the mold are saved.

Drawings

FIG. 1 is a schematic view of the exploded structure of the present invention;

FIG. 2 is a schematic structural diagram of a locking state of a slide of a cylinder;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a schematic structural diagram of a row open state of a cylinder;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 4;

FIG. 6 is a cross-sectional view taken along line C-C of FIG. 4;

FIG. 7 is an enlarged view of portion D of FIG. 5;

fig. 8 is a schematic view of the front mold structure.

Detailed Description

To further illustrate the technical means and technical effects of the present invention, the following describes a preferred embodiment of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-6, a double-cylinder slide self-locking structure of a plastic mold comprises a slide 1, a cylinder 2 and a shovel machine 3, wherein a cylinder connecting block 22 is fixedly arranged at one end of a cylinder piston rod 21, a connecting step 221 is arranged on the cylinder connecting block 22, a first clamping groove 31 is arranged on the surface of the shovel machine 3 opposite to the cylinder 2, the connecting step 221 is clamped into the first clamping groove 31 and is in clearance connection with the first clamping groove 31, and a first delay vacancy-avoiding portion 23 is arranged between the upper surface of the inner side of the first clamping groove 31 and the upper surface of the connecting step 221. Two side surfaces of the shovel machine 3 are respectively provided with a through hole 32 along the direction of the first clamping groove 31, the through holes 32 are communicated with the first delay avoidance position 23, a pushing block 33 is arranged in the through holes 32, and a first locking structure used for limiting the movement of the shovel machine 3 relative to the plastic mold is arranged at one end, far away from the first clamping groove 31, of the pushing block 33. The first locking structure comprises shovel machine guide blocks 34 fixed on two sides of the shovel machine 3, a moving assembly and a pressing strip 7 fixed on the plastic mold, wherein the moving assembly is respectively in sliding connection with the shovel machine guide blocks 34 and the pressing strip 7. The moving assembly comprises a first spring 35, a push block fixing piece 36, a locking block 37 and a second spring 38 which are connected in sequence; one side of the locking block 37 is in sliding connection with the shovel machine guide block 34, and the other opposite side is in sliding connection with the pressing bar 7; one end of the first spring 35 is fixedly connected with the pushing block fixing piece 36, the opposite end is connected with the pushing block 33, one end of the second spring 38 is fixedly connected with the locking block 37, and the opposite end is connected with the plastic mold.

Be equipped with 2 second draw-in grooves 11 on the relative face of line position 1 and shovel machine 3, shovel machine 3 is fixed with 2T type sliders 4 on the relative face of line position 1, T type slider 4 card respectively go into in the second draw-in groove 11 and with second draw-in groove 11 sliding connection, be equipped with the second and delay between the relative one side of T type slider 4 bottom surface and second draw-in groove 11 and keep away vacancy 12. Shovel 3 is fixed with 1 little auto-

lock mold insert

5 and 2 on the relative one side of position 1 of going, and big auto-lock mold insert 5 sets up between

2T type sliders

4, and 2 little auto-lock mold inserts 6 set up respectively in 2T type sliders 4 one side of keeping away from big auto-lock mold insert 5. The large self-locking insert 5 and the small self-locking insert 6 are respectively provided with a first step surface 51 parallel to the moving direction of the oil cylinder piston rod 21, one surface of the slide 1 opposite to the shovel machine 3 is provided with a second step surface 13 matched with the first step surface 51, and the first step surface 51 is in straight surface fit with the second step surface 13. The large self-locking insert 5 and the small self-locking insert 6 are respectively provided with a third step surface 52, the third step surface 52 and the moving direction of the cylinder piston rod 21 form an included angle which is larger than 0 degree and smaller than 30 degrees, a fourth step surface 14 matched with the third step surface 52 is arranged on the opposite surface of the slide 1 and the shovel machine 3, and the third step surface 52 is matched with the inclined surface of the fourth step surface 14.

The working principle is as follows:

the oil cylinder piston rod 21 moves downwards, the oil cylinder connector 22 drives the shovel machine 3 and the self-locking insert to move, the shovel machine 3 and the self-locking insert drive the slide 1 to move until the shovel machine 3 and the self-locking insert tightly press the slide 3, and the matching between the large self-locking insert and the slide 1 is increased by the matching of two-stage straight surfaces except the inclined surface. Effectively prevents the problem of movement of the slide relative to the mold caused by large injection pressure in the injection molding process, and ensures the appearance and quality of the produced product.

During the downward movement of the cylinder piston rod 21, the cylinder connector 22 moves downward to fill the first delay avoidance space 23, a gap is formed at the upper part of the cylinder connector 22, and the push block 33 moves toward the middle under the action of the spring. The lock 37 slides under the hold down bar 7 under the action of the spring until the shovel guide block 34 is secured. Because the shovel guide block 34 is fixed on the shovel 3 and the pressing bar 7 is fixed on the die, the locking block 37 fixes the shovel 3 while fixing the shovel guide block 34, and prevents the shovel 3 from moving relative to the die. Effectively prevented in the process of moulding plastics, because of the big problem that leads to shovel machine 3 relative mould motion of moulding plastics pressure.

The oil cylinder 2 is reset, the oil cylinder piston rod 21 is driven to move upwards, the linkage oil cylinder connector 22 moves upwards, the first delay avoidance position 23 is firstly made free, the shovel machine 3 does not move at the moment, the push block 33 moves towards two sides under the action of the oil cylinder connector 22, the push block 33 drives the lock block 37 to move towards two sides, the lock block 37 leaves the shovel machine guide block 34, and the limit on the shovel machine 3 is relieved; secondly, the cylinder connecting block 22 continues to move upwards, the connecting step 221 contacts with the upper surface of the inner side of the first groove 31, and the shovel machine 3 is driven to move.

When the oil cylinder connector 22 moves upwards to drive the shovel machine 3 to move, firstly, the T-shaped sliding block 4 on the shovel machine 3 and the large and small self-locking inserts move together, and the second delay vacancy avoidance position 12 is arranged between the T-shaped sliding block 4 and the second clamping groove 11, so that the shovel machine 3 and the large and small self-locking inserts move when disengaging from the straight surface matching of the large and small self-locking inserts and the slide 1, the T-shaped sliding block 4 contacts the slide 1, and the slide 1 is driven to move.

As shown in fig. 7, the plastic mold comprising the dual-cylinder slide self-locking structure comprises a front mold 8, a cylinder 2 is fixedly connected with the front mold 8 through a cylinder fixing block 9, and a pressing strip 7 is fixedly connected with the front mold 8.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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 may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Claims

1. A double-cylinder slide self-locking structure of a plastic mold comprises a slide, an oil cylinder and a shovel machine, and is characterized in that an oil cylinder connecting block is fixedly arranged at one end of an oil cylinder piston rod, a connecting step is arranged on the oil cylinder connecting block, a first clamping groove is formed in the surface, opposite to the oil cylinder, of the shovel machine, the connecting step is clamped into the first clamping groove and is in clearance connection with the first clamping groove, and a first delay vacancy avoiding position is formed between the upper surface of the inner side of the first clamping groove and the upper surface of the connecting step;

through holes are respectively formed in the two side faces of the shovel machine along the direction of the first clamping groove and are communicated with the first delay space, a push block is arranged in each through hole, and a first locking structure used for limiting the shovel machine to move relative to the plastic mold is arranged at one end, far away from the first clamping groove, of each push block;

a second clamping groove is formed in the surface, opposite to the shovel machine, of the line position, a T-shaped sliding block is fixedly arranged on the surface, opposite to the line position, of the shovel machine, and the T-shaped sliding block is clamped into the second clamping groove and is in sliding connection with the second clamping groove;

and a second locking structure for limiting the movement of the slide relative to the plastic mold is arranged at the joint of the shovel machine and the slide.

2. The dual-cylinder slide self-locking structure of claim 1, wherein the first locking structure comprises a limiting structure, a moving structure and a pressing strip fixedly arranged on the shovel machine, the pressing strip is fixed on a plastic mold, and the moving structure is respectively connected with the limiting structure and the pressing strip in a sliding manner.

3. The dual cylinder slide self-locking structure of claim 2, wherein the limiting structure is a limiting step arranged on the shovel or a shovel guide block fixedly connected with the shovel.

4. The dual-cylinder slide self-locking structure of claim 3, wherein the moving structure comprises a first elastic component, a push block fixing component, a locking block and a second elastic component which are connected in sequence;

one side of the locking block is connected with the limiting structure in a sliding mode, and the other opposite side of the locking block is connected with the pressing strip in a sliding mode;

one end of the first elastic component is fixedly connected with the push block fixing piece, and the other end of the first elastic component is connected with the push block;

one end of the second elastic component is fixedly connected with the locking block, and the other end of the second elastic component is connected with the plastic mold.

5. The dual cylinder slide self-locking structure of claim 4 wherein the first resilient member and the second resilient member are both springs.

6. The dual-cylinder slide self-locking structure as claimed in claim 5, wherein a second delay vacancy-avoiding portion is provided between the bottom surface of the T-shaped slider and the opposite surface of the second slot.

7. The dual-cylinder slide self-locking structure of claim 6, wherein the second locking structure comprises a self-locking insert fixedly disposed on a face of the shovel opposite to the slide, the self-locking insert having a first step face parallel to a direction of movement of the cylinder piston rod;

and a second step surface matched with the first step surface is arranged on the surface of the slide opposite to the shovel machine, and the first step surface is matched with the straight surface of the second step surface.

8. The dual-cylinder slide self-locking structure according to claim 7, wherein there are 2T-shaped sliders and 2 second slots;

the self-locking insert comprises 1 large self-locking insert and 2 small self-locking inserts, the large self-locking insert is arranged between the 2T-shaped sliding blocks, and the 2 small self-locking inserts are respectively arranged on one sides, far away from the large self-locking insert, of the 2T-shaped sliding blocks.

9. A plastic mold, comprising the dual cylinder slide self-locking structure of any one of claims 1 to 8.

10. The plastic mold as claimed in claim 9, comprising a front mold, wherein the cylinder is fixedly connected with the front mold through a cylinder fixing block, and the bead is fixedly connected with the front mold.