CN212979099U

CN212979099U - Forming block back locking structure

Info

Publication number: CN212979099U
Application number: CN202020627246.2U
Authority: CN
Inventors: 倪志; 徐惠; 许斌; 吴明华
Original assignee: HASCO Vision Technology Co Ltd
Current assignee: HASCO Vision Technology Co Ltd
Priority date: 2020-04-23
Filing date: 2020-04-23
Publication date: 2021-04-16
Anticipated expiration: 2030-04-23

Abstract

The utility model discloses a shaping piece counter-lock structure, include: the core pulling device comprises a forming block, a core pulling block and a cylinder, an inclined guide groove on the forming block, an inclined guide block on the core pulling block, and a gap formed between the inclined guide block and the inclined guide groove; an inclined guide surface and a first limiting surface are arranged on the side wall of the molding block connected with the core-pulling block; the inclined guide surface is parallel to the inclined guide groove; the side wall of the core-pulling block is provided with a first guide inclined plane, a second guide inclined plane and a second limiting plane, the first guide inclined plane, the second guide inclined plane and the inclined guide plane are respectively parallel, and the distance between the second guide inclined plane and the first guide inclined plane is equal to the height of the gap; the second limiting surface is parallel to the first limiting surface, one end of the second limiting surface is connected to the first guiding inclined surface, and the other end of the second limiting surface is connected to the second guiding inclined surface. When the product is subjected to injection molding production, the first limiting surface is attached to the second limiting surface, the acting force on the core-pulling block under the action of the molding block is perpendicular to the axis of the cylinder piston rod, the core-pulling block is not easy to move transversely under the action of the acting force, and flash is not easy to generate on the injection molded product.

Description

Forming block back locking structure

Technical Field

The utility model relates to a mould structure field of loosing core, concretely relates to shaping piece back-locking structure.

Background

In the process of injection molding production by using an injection mold, if a hole, a groove and other mechanisms are arranged on the surface of an injection molded product and the depth direction of the structure is perpendicular to the mold opening direction of the injection mold, a core-pulling mechanism needs to be arranged on the injection mold for molding the mechanism. In the process of opening the die, firstly, the core is pulled through the core pulling mechanism, and then the die is opened.

At present, as shown in fig. 1, an existing core pulling mechanism includes a forming block 1 'and a core pulling block 2', an inclined guide groove 4 'is formed on a side wall of the forming block 1', an inclined guide block 5 'is arranged on a side wall of the core pulling block 2', the inclined guide block 5 'is slidably connected inside the inclined guide groove 4', and a side wall of the inclined guide block 5 'is attached to an inner wall of the inclined guide groove 4'. When the core needs to be pulled, a piston rod of the air cylinder 3 ' is connected to the core pulling block 2 ', the piston rod of the air cylinder 3 ' drives the core pulling block 2 ' to move laterally, and at the moment, the inclined guide block 5 ' on the core pulling block 2 ' is matched with the inclined guide groove 4 ' of the forming block 1 ', so that the forming block 1 ' is driven to pull out a hole or a groove of a product. However, when the injection pressure inside the injection mold is too high, the injection liquid inside the injection mold pushes the forming block 1' to move outwards for a certain distance, so that flash is generated on the final injection-molded product.

SUMMERY OF THE UTILITY MODEL

The technical proposal of the utility model is that the forming block back locking structure comprises a forming block, a core-pulling block and a cylinder, wherein the forming block is provided with an inclined guide groove in an inclined way, the core-pulling block is provided with an inclined guide block which is connected with the inclined guide groove in a sliding way, the cylinder is connected with the core-pulling block,

a gap is formed between the end part of the inclined guide block far away from the core pulling block and the inclined guide groove, an inclined guide surface is arranged on the side wall of the forming block connected with the core pulling block, and the lower end of the inclined guide surface is connected with a first limiting surface; the inclined guide surface is parallel to the inclined guide groove;

a first guide inclined plane, a second guide inclined plane and a second limiting plane are arranged on the side wall of the core pulling block facing the forming block, the first guide inclined plane is parallel to the inclined guide plane, the second guide inclined plane is parallel to the first guide inclined plane, and the distance between the second guide inclined plane and the first guide inclined plane is equal to the height of the gap; the second limiting surface is parallel to the first limiting surface, one end of the second limiting surface is connected with the first guiding inclined surface, and the other end of the second limiting surface is connected with the second guiding inclined surface.

In the forming block counter-locking structure, preferably, the first limiting surface is parallel to a piston rod of the cylinder.

Through the technical scheme, when the product is required to be subjected to injection molding, the piston rod of the control cylinder extends, the piston rod of the cylinder pushes the core pulling block to move transversely towards one side of the molding block, the core pulling block drives the molding block to move longitudinally through the inclined guide block, and in the process, the second guide inclined surface arranged on the core pulling block is attached to the inclined guide surface on the molding block. When the second limiting surface on the core-pulling block is jointed with the limiting surface on the forming block, the longitudinal movement of the forming block is stopped, and the core-pulling block continues to move transversely under the pushing of the piston rod of the cylinder until the first guide inclined surface on the core-pulling block is jointed with the inclined guide surface on the forming block. Because the first limiting surface is parallel to the second limiting surface, and the second limiting surface is parallel to the piston rod of the cylinder, when the injection molding pressure of the injection mold is larger, the pressure of the molding block acting on the core pulling block can not push the core pulling block to move outwards, and the flash is not easily formed on the injection molded product.

The cylinder is used for driving the core-pulling block to slide; the molding block can move to one side far away from the core-pulling block under the action of external force; the inclined guide surface and the first limiting surface are both arranged on the forming block.

In this shaping piece back locking structure, it is preferred that the piece of loosing core includes shovel chicken and inlays the mold insert in the caulking groove on the shovel chicken.

Further, the first guide inclined plane is arranged on the chicken shovel, and the second guide inclined plane and the second limiting plane are arranged on the insert; the second guiding inclined plane and the second limiting plane are both higher than the first guiding inclined plane. The first guide inclined plane is sunken to form a caulking groove, and the insert is embedded in the caulking groove. The second guide inclined surface and the second limiting surface are protruded out of the first guide inclined surface.

Through the technical scheme, when the inclined guide device is used, the relative sliding between the second guide inclined surface and the inclined guide surface is more, so that the second guide inclined surface is more easily worn relative to the first guide inclined surface. Set up the guide inclined plane on the mold insert, the mold insert adopts the mode of scarf joint to connect on shoveling the chicken, when discovering that second guide inclined plane wearing and tearing are serious and influence injection moulding's product quality, can follow the chicken with the mold insert and take off and change.

In the forming block counter-locking structure, preferably, a placing groove is formed in one end, close to the cylinder, of the core-pulling block, the placing groove is perpendicular to the piston rod of the cylinder, an insert block is arranged at the end of the piston rod of the cylinder, and the insert block is connected to the placing groove in a sliding manner.

Through above-mentioned technical scheme, be connected the piston rod of cylinder with the piece of loosing core through the abaculus, when the piece removal is loosed core in needs use cylinder control, only need with the abaculus slide be connected to the standing groove in can. When the cylinder core pulling device is not needed to be used, the cylinder and the core pulling block can be separated only by controlling the embedded block to slide out of the placing groove.

In this shaping piece counter-locking structure, preferably, the piston rod lateral wall of cylinder is sunken to be formed with the locating surface, be connected with the locating piece on the abaculus, the tip laminating of locating piece in the locating surface. The embedded block is connected with the positioning block through screws.

Through the technical scheme, the positioning block arranged on the embedded block is abutted against the positioning surface on the side wall of the piston rod of the cylinder, so that circumferential rotation is not easy to occur between the core-pulling block and the cylinder.

In the forming block back locking structure, preferably, a plurality of mounting holes are formed in the cylinder body of the air cylinder in a penetrating manner.

Through the technical scheme, when the air cylinder is used, the screw can penetrate through the mounting hole and then is connected to the side wall of the injection mold in a threaded mode, and therefore the mounting process of the air cylinder is convenient to achieve.

In the forming block back locking structure, preferably, the first guide inclined surface is recessed inwards to form a mounting inclined groove, the mounting inclined groove penetrates through an end part of the insert, which is away from the chicken shoveling tool, and the inclined guide block is connected inside the mounting inclined groove in a sliding manner.

Through above-mentioned technical scheme, during injection mold's use, relative slip often takes place between oblique guide block and the oblique guide slot, leads to the easy wearing and tearing that take place of the surface of oblique guide block. When the abrasion of the inclined guide block is serious and an injection molding product can be influenced, the inclined guide block slides out of the installation chute, so that the inclined guide block can be replaced.

In the forming block locking structure, preferably, the insert is concavely provided with a limiting groove; the limiting groove is communicated with the installation chute, and the limiting groove is used for embedding the inclined guide block.

Through above-mentioned technical scheme, the guide block to one side can imbed to the spacing groove when using, and the guide block to one side can carry on spacingly this moment to the mold insert for the mold insert is difficult for shoveling the chicken and slides.

The utility model has the advantages that:

1. in the process of injection molding production, the injection molding pressure of the injection mold acts on the core-pulling block through the molding block, and the direction of the acting force is perpendicular to the piston rod of the cylinder, so that the core-pulling block is not easy to move outwards under the action of the acting force, and the injection molded product is not easy to generate flash;

2. the second guide inclined plane and the second limiting surface are arranged on the insert, and when the second guide inclined plane or the second limiting surface is abraded seriously, the insert can be taken down from the chicken shovel and replaced.

Drawings

FIG. 1 is a schematic structural diagram of a conventional core-pulling mechanism;

FIG. 2 is a schematic view of the overall structure of the present invention;

FIG. 3 is a diagram showing the position relationship of the gap of the present invention;

fig. 4 is a schematic diagram of the local explosion of the present invention.

Fig. 5 is a schematic structural diagram of the core-pulling block of the present invention.

In the figure, 1', a forming block; 2', a core pulling block; 3', a cylinder; 4', an inclined guide groove; 5' and an inclined guide block.

1. Forming a block; 2. core extraction; 21. shoveling the chicken; 22. an insert; 3. a cylinder; 4. an inclined guide groove; 5. an inclined guide block; 6. a gap; 7. an inclined guide surface; 8. a first limiting surface; 9. a first guide ramp; 10. a second guide ramp; 11. a second limiting surface; 12. caulking grooves; 13. a placement groove; 14. an insert block; 15. positioning the surface; 16. positioning blocks; 17. mounting holes; 18. installing a chute; 19. a limiting groove.

Detailed Description

The following describes in further detail embodiments of the present invention with reference to the accompanying drawings.

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings, so that the technical solution of the present invention can be more easily understood and grasped.

A forming block back locking structure is shown in figure 2 in the overall appearance and comprises a forming block 1, a core-pulling block 2 and a cylinder 3.

As shown in fig. 2 to 4, an inclined guide surface 7 is provided on an end surface of the molding block 1 facing the core block 2, a T-shaped inclined guide groove 4 is formed by recessing a center of the inclined guide surface 7, a small end of the inclined guide groove 4 faces one side of the core block 2, and an extending direction of the inclined guide groove 4 is the same as an extending direction of the inclined guide surface 7. The end part of the forming block 1 facing the core-pulling block 2 is also provided with a first limiting surface 8, the edge of the first limiting surface 8 is connected with the edge of the inclined guide surface 7, and the first limiting surface 8 is parallel to the piston rod of the cylinder 3.

The core-pulling block 2 comprises a chicken scoop 21 and an insert 22. The insert 22 is embedded in the embedding groove 12 on the chicken shovel 21. Shovel chicken 21 is provided with first guide inclined plane 9 towards on the terminal surface of shaping piece 1, and first guide inclined plane 9 is on a parallel with oblique guide surface 7, when carrying out injection moulding to the product, and first guide inclined plane 9 laminating is in oblique guide surface 7. A T-shaped mounting chute 18 is formed in the center of the first guide inclined surface 9 in a concave manner, the small end of the mounting chute 18 (namely the bottom end of the T-shaped mounting chute 18) is close to one side of the forming block 1, the extension direction of the mounting chute 18 is the same as that of the first guide inclined surface 9, and the mounting chute 18 penetrates through the end part of the insert 22, which is far away from the chicken shoveling 21. The inside of the installation chute 18 is connected with an inclined guide block 5 in a sliding manner, and the end part of the inclined guide block 5 extends into the inclined guide groove 4 and is connected with the inclined guide groove 4 in a sliding manner. The side wall of the inclined guide block 5 is attached to the inner side wall of the inclined guide groove 4. A gap 6 is formed between the end part of the inclined guide block 5 far away from the core-pulling block 2 and the inclined guide groove 4, and the forming block 1 can move upwards under the action of external force and is gradually far away from the core-pulling block 2.

In the process of carrying out the production of moulding plastics to the product, oblique guide block 5 moves up and contradicts in the roof of oblique guide slot 4, when loosing core to injection moulding's product, oblique guide block 5 moves down and contradicts in the diapire of oblique guide slot 4. The first guiding inclined surface 9 is concavely formed with a caulking groove 12, and the extension direction of the caulking groove 12 is perpendicular to the extension direction of the first guiding inclined surface 9. The placing groove 13 of the T shape is arranged on the end part of the shovel chicken 21 close to the cylinder 3 in a penetrating mode, the cross section of the placing groove 13 is of the T shape, the T-shaped small end of the placing groove 13 faces one side of the cylinder 3, and the extending direction of the placing groove 13 is perpendicular to the axial direction of a piston rod of the cylinder 3.

The insert 22 is embedded in the embedding groove 12, the end of the insert 22 protrudes out of the outer wall of the chicken shovel 21, the end of the insert 22 protruding out of the chicken shovel 21 is provided with a second limiting surface 11 and a second guiding inclined surface 10, the edge of the second limiting surface 11 close to the cylinder 3 is connected to the first guiding inclined surface 9, and the second limiting surface 11 is parallel to the first limiting surface 8. When the product is produced by injection molding, the second limiting surface 11 is attached to the first limiting surface 8, so that the acting force of the molding block 1 acting on the core pulling block 2 is perpendicular to the axial direction of the piston rod of the cylinder 3, and the core pulling block 2 is not easy to move outwards under the action of the acting force. The second guiding inclined plane 10 is connected to the edge of the limiting plane far away from the cylinder 3, the second guiding inclined plane 10 is parallel to the first guiding inclined plane 9, and the distance between the second guiding inclined plane 10 and the first guiding inclined plane 9 is equal to the height of the gap 6. When the core of the injection molded product is pulled, the second guide slope 10 is attached to the slope guide surface 7. The end part of the insert 22 close to the installation chute 18 is sunken to form a limiting groove 19, the limiting groove 19 is communicated with the installation chute 18, when the inclined guide block 5 extends into the limiting groove 19, the side wall of the inclined guide block 5 is attached to the inner wall of the limiting groove 19, and the inclined guide block 5 can limit the insert 22, so that the insert 22 is not easy to slide relative to the chicken shoveling 21 (fig. 5).

A plurality of mounting holes 17 are arranged on the cylinder body of the cylinder 3 in a penetrating manner, and the mounting holes 17 are uniformly distributed on the cylinder body of the cylinder 3. The side wall of the piston rod of the cylinder 3 is formed with a positioning surface 15. The end of the piston rod of the cylinder 3 is provided with a T-shaped insert block 14, and the insert block 14 is connected in the placing groove 13 in a sliding way. The side wall of the embedded block 14 is connected with a positioning block 16 through a screw, and the end part of the positioning block 16 is bent towards one side of the piston rod of the cylinder 3 and attached to the positioning surface 15, so that the core-pulling block 2 and the cylinder 3 are not easy to rotate relatively.

Of course, the above is only a typical example of the present invention, and besides, the present invention can also have other various specific embodiments, and all technical solutions adopting equivalent replacement or equivalent transformation are all within the scope of the present invention as claimed.

Claims

1. The utility model provides a shaping piece anti-lock structure, includes the shaping piece, looses core piece and cylinder, the slope is provided with oblique guide slot on the shaping piece, be provided with oblique guide block on the core piece, oblique guide block slide connect in oblique guide slot, the cylinder connect in core piece, its characterized in that:

a gap (6) is formed between the end part of the inclined guide block (5) far away from the core-pulling block (2) and the inclined guide groove (4); an inclined guide surface (7) is arranged on the side wall of the forming block (1) connected with the core-pulling block (2), and the lower end of the inclined guide surface (7) is connected with a first limiting surface (8); the inclined guide surface (7) is parallel to the inclined guide groove (4);

a first guide inclined plane (9), a second guide inclined plane (10) and a second limiting plane (11) are arranged on the side wall of the core-pulling block (2) facing the forming block (1), the first guide inclined plane (9) is parallel to the inclined guide plane (7), the second guide inclined plane (10) is parallel to the first guide inclined plane (9), and the distance between the second guide inclined plane (10) and the first guide inclined plane (9) is equal to the height of the gap (6); the second limiting surface (11) is parallel to the first limiting surface (8), one end of the second limiting surface (11) is connected with the first guide inclined surface (9), and the other end of the second limiting surface (11) is connected with the second guide inclined surface (10).

2. The forming block locking structure according to claim 1, wherein: the first limiting surface (8) is parallel to a piston rod of the air cylinder (3).

3. The forming block locking structure according to claim 1, wherein: the core-pulling block (2) comprises a shovel chicken (21) and an insert (22) embedded in an embedding groove (12) on the shovel chicken (21).

4. A forming block counter-locking structure according to claim 3, wherein:

the first guide inclined plane (9) is arranged on the chicken shoveling tool (21), and the second guide inclined plane (10) and the second limiting plane (11) are arranged on the insert (22); the second guide inclined surface (10) and the second limiting surface (11) are higher than the first guide inclined surface (9).

5. The forming block locking structure according to claim 1, wherein: a placing groove (13) is formed in one end, close to the cylinder, of the core-pulling block (2), the placing groove (13) is perpendicular to the piston rod of the cylinder (3), an embedded block (14) is arranged on the end portion of the piston rod of the cylinder (3), and the embedded block (14) is connected to the placing groove (13) in a sliding mode.

6. A forming block counter-locking structure according to claim 5, characterized in that: the piston rod side wall of the cylinder (3) is sunken to form a positioning surface (15), the embedded block (14) is connected with a positioning block (16), and the end part of the positioning block (16) is attached to the positioning surface (15).

7. The forming block locking structure according to claim 1, wherein: the cylinder body of the cylinder (3) is provided with a plurality of mounting holes (17) in a penetrating way.

8. A forming block counter-locking structure according to claim 3, wherein: the first guide inclined plane (9) is recessed inwards to form a mounting inclined groove (18), the mounting inclined groove (18) penetrates through the end part, deviating from the chicken shoveling (21), of the insert (22), and the inclined guide block (5) is connected inside the mounting inclined groove (18) in a sliding mode.

9. A forming block counter-locking structure according to claim 8, wherein: a limiting groove (19) is concavely formed on the insert (22); the limiting groove (19) is communicated with the installation chute (18), and the limiting groove (19) is used for the inclined guide block (5) to be embedded.