CN114734589A

CN114734589A - Stop block mechanism and injection mold

Info

Publication number: CN114734589A
Application number: CN202210439496.7A
Authority: CN
Inventors: 张智锋; 丘永堂
Original assignee: Huizhou Winone Precision Technology Co Ltd
Current assignee: Huizhou Winone Precision Technology Co Ltd
Priority date: 2022-04-25
Filing date: 2022-04-25
Publication date: 2022-07-12
Anticipated expiration: 2042-04-25
Also published as: CN114734589B

Abstract

The invention provides a stop block mechanism and an injection mold. This dog mechanism includes: a drive assembly; the guide limiting assembly comprises a slide insert, a first guide channel is arranged on the slide insert, and a limiting bulge is arranged in the first guide channel; the stop block is movably arranged in the first guide channel, one end of the stop block is suitable for being connected with the driving assembly, and the other end of the stop block is suitable for being abutted to the injection molding piece; the stop block is also provided with a stop part; one end of the elastic piece is abutted against the blocking part, and the other end of the elastic piece is abutted against the limiting bulge to provide elastic restoring force for the resetting movement of the stop block; when the driving assembly is in the first movement stroke section, the stop block is kept still, the guide limiting assembly moves towards the first direction under the driving action of the driving assembly, and when the driving assembly is in the second movement stroke section, the stop block moves towards the first direction under the action of the elastic restoring force of the elastic piece. According to the technical scheme, the stop block mechanism can effectively increase the area of the stop block surface of the stop block on the injection molding part.

Description

Stop block mechanism and injection mold

Technical Field

The invention relates to the technical field of injection molds, in particular to a stop block mechanism and an injection mold.

Background

At present, in order to solve the problem that a slide cavity adheres and pulls an injection molding part, in the prior art, one or more sets of slide needle blocking mechanisms which are reset by sleeved springs are usually designed in an area where the injection molding part is seriously adhered, so that a needle blocking mechanism and the injection molding part are kept to be relatively stopped in the early stage of mold opening of the slide, other slide cavities are firstly separated from the edge profile of the injection molding part, and then the needle blocking mechanism and the slide are integrally opened to a slide stroke limiting point. The row position die sticking problem is solved by a mode of dividing the adhesion force of a row position injection molding part cavity to the injection molding part into two parts with a big front part and a small back part and performing die opening in stages.

When the row position cavity is seriously adhered with a drawn product, one or more sets of row position needle blocking mechanisms which are reset by sleeved springs are generally designed in the area where the adhesion of the product is serious in the prior art, so that the problem of row position mold adhesion is solved by blocking a distance from the product at the mold adhering position of the row position cavity first and performing staged demolding, wherein the conventional row position needle blocking structure is shown in fig. 10, but the row position circular needle blocking structure has more application defects for some products with more structural characteristics, and the application defects are mainly as follows:

1. the blocking surface area of the circular blocking needle 1' is too small, the blocking force is insufficient, and the corresponding part of the product is easy to cause top white, top height and top deformation.

2. The design of the circular needle 1' by the edge is easy to produce thin steel, as shown in fig. 11.

3. The circular blocking needle has poor applicability and has a bottleneck in application. The slide structure space required by the design of the circular needle blocking mechanism is determined by the diameter of the spring 2 ' sleeved on the circular needle blocking 1 ' for providing the return power for the circular needle blocking 1 ', that is, the blocking surface of the circular needle blocking 1 ' is always smaller than the inner diameter of the spring 2 ', as shown in fig. 12 and 13. Because the product sticking needs to design the row position insert pins 3 'on both sides of the area of the circular pin blocking 1', and the row position cooling water paths 4 'are arranged below the circular pin blocking 1', the pin blocking mechanism is designed for the product, and obviously, if one set of pin blocking mechanism is designed, the blocking force is too small; if two sets are designed, the space is obviously insufficient.

Disclosure of Invention

The invention mainly aims to provide a stop block mechanism and an injection mold, which can effectively increase the area of a stop surface of a stop block on an injection molding piece.

In order to achieve the above object, according to one aspect of the present invention, there is provided a stopper mechanism including:

a drive assembly;

the guide limiting assembly comprises a slide insert, a first guide channel is arranged on the slide insert, and a limiting bulge is arranged in the first guide channel;

the stop block is movably arranged in the first guide channel and can move along the first guide channel in a guide way, one end of the stop block is suitable for being connected with the driving assembly, and the other end of the stop block is suitable for being abutted against the injection molding part; the stop block is also provided with a stop part which forms an installation cavity with the limiting bulge;

one end of the elastic piece is abutted against the blocking part, the other end of the elastic piece is abutted against the limiting bulge, and the elastic piece provides elastic restoring force for the resetting movement of the stop block;

when the driving assembly is in the first movement stroke section, the stop block is kept still, the guide limiting assembly moves towards the first direction under the driving action of the driving assembly, and when the driving assembly is in the second movement stroke section, the stop block moves towards the first direction under the action of the elastic restoring force of the elastic piece.

Furthermore, a pressing plate is fixedly arranged on the slide insert, and the limiting bulge is arranged on the pressing plate.

Furtherly is provided with the constant head tank on the position mold insert of going, and clamp plate fixed mounting is in the constant head tank, and one side that the elastic component was kept away from to spacing arch is provided with the grafting inclined plane, and the constant head tank has and grafting inclined plane matched with spigot surface, and the grafting inclined plane is impressed in the first direction passageway along the spigot surface.

Furthermore, the limiting protrusion comprises a first vertical side surface, the first vertical side surface is arranged on one side, close to the limiting part, of the limiting protrusion, and the elastic part abuts against the first vertical side surface.

Further, the lower bottom surface of dog is provided with spacing step, and the spacing subassembly of direction still includes the position seat of going, goes the position mold insert and goes the position seat fixed connection to and go and form the backstop step in hookup location department between the position seat, the backstop step can carry out the backstop to spacing step, carries on spacingly in order to carry out the motion of dog on the first direction.

Furthermore, the slide seat comprises a second guide channel, a first end face and a second end face, the second guide channel is communicated with the first guide channel, the stop block penetrates out of the second guide channel and then enters the first guide channel, the first guide channel and the second guide channel form a stop step at the first end face, and the stop step can stop the stop step on the first end face.

Furthermore, the upper surface of the stop block is provided with a first mounting groove, the limiting protrusion extends into the first mounting groove, the stop block comprises a guide part and a forming part, the guide part is located on the elastic piece mounting side of the first mounting groove, and the forming part is located on one side, away from the elastic piece mounting side, of the first mounting groove.

Further, the forming part of the stopper forms a forming surface on the side away from the first mounting groove, and the forming surface is in a shape of a polygon, an ellipse or a combination of a straight line and a curve.

Further, the molding part of the stop block forms a molding surface on one side far away from the first mounting groove, and the shape of the molding surface is matched with that of the molding surface of the injection molding part on the side.

Further, drive assembly includes shovel base and oblique guide pillar, and the one end that oblique guide pillar is close to the dog is installed in shovel base, and the spacing subassembly of direction still includes the position seat of going, goes the position mold insert and goes the position seat fixed connection, and the position seat of going has oblique guiding hole, and oblique guide pillar slides and sets up in the oblique guiding hole in limit, and drive assembly passes through the position seat of going of oblique guide pillar drive and along the reciprocating motion of first direction.

Furthermore, the stop block mechanism further comprises a stop block, the stop block is arranged on one side, facing the stop block, of the shovel base, the stop block is provided with a first abutting portion and a second abutting portion, the first abutting portion and the second abutting portion are sequentially arranged from top to bottom, the first abutting portion is a vertical face, and the second abutting portion is parallel to the guide direction of the inclined guide pillar.

Further, the locking piece is detachably mounted on the shovel base.

Furthermore, the stop block mechanism further comprises a locking block pressing plate, the shovel base further comprises a second mounting groove, a mounting hole is formed in the bottom surface of the second mounting groove, the locking block is arranged in the mounting hole, the locking block pressing plate is fixedly arranged in the second mounting groove, and the locking block is pressed and fixed in the mounting hole.

Further, the shovel base has first stroke section and second stroke section for the position seat of going, and when the shovel base was located first stroke section, the dog was in butt joint with first butt portion, and the dog keeps static, and when the shovel base was located second stroke section, the dog was in butt joint with second butt portion to along with the motion of shovel base reciprocating motion in the first direction.

Furthermore, the slide insert is internally provided with a cooling water path, and the cooling water path and the first guide channel are arranged at intervals.

According to another aspect of the invention, an injection mold is provided, comprising the above stop mechanism.

By applying the technical scheme of the invention, the positioning insert is provided with the first guide channel, the first guide channel is internally provided with the limiting bulge, one end of the elastic piece is abutted against the stop block, and the other end of the elastic piece is abutted against the limiting bulge. Therefore, when the stop dog is in guiding movement along the first guide channel under the action of the driving assembly, the elastic piece can be stressed to deform, and the elastic force generated by the elastic piece due to deformation can be used as the elastic restoring force for resetting movement of the stop dog. And the mounted position of elastic component is different with the mounted position of the conventional needle structure elastic component that keeps off, and the conventional needle structure elastic component that keeps off is established on keeping off the needle, keeps off the face that blocks that the needle need be less than the elastic component internal diameter, and in this application, because the elastic component is installed in the dog, the overall dimension of dog is not restricted by spring diameter size, consequently makes the shape and the area of keeping off the face all not restricted by spring diameter size. Like this, the staff can set for the overall dimension of dog according to the required area that blocks the face, can effectively increase the dog to the area of the face that blocks of injection molding, and then increase the dog and to the power of blockking of injection molding, further prevent that the injection molding from deformation under the adhesion of the spacing subassembly of direction.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a perspective view of a guide and limit assembly according to an embodiment of the present invention;

FIG. 2 illustrates a perspective view of a stop according to an embodiment of the present invention;

FIG. 3 shows a cross-sectional view of a stop mechanism of an embodiment of the present invention;

fig. 4 shows a perspective view of a slide insert according to an embodiment of the invention;

FIG. 5 illustrates a perspective view of a shovel base according to an embodiment of the present invention;

FIG. 6 illustrates a perspective view of a locking block of an embodiment of the present invention;

FIG. 7 shows a perspective view of a platen according to an embodiment of the present invention;

FIG. 8 shows a partial enlarged view at A of FIG. 3;

fig. 9 shows an overall structural view of a drive assembly of an embodiment of the present invention;

FIG. 10 shows a prior art configuration of the engagement between the shift pin and the injection molded part;

FIG. 11 shows a prior art positional block diagram of a slide pin on a slide insert;

fig. 12 is a first positional relationship diagram of a row block needle, a row insert needle, and a cooling water path according to the related art; and

fig. 13 is a second positional relationship diagram of the conventional row stopper needle, the row insert needle, and the cooling water path.

Wherein the figures include the following reference numerals:

10. a slide insert; 11. a first guide channel; 12. a limiting bulge; 13. pressing a plate; 14. positioning a groove; 15. inserting an inclined plane; 16. a guide surface; 17. a first vertical side; 18. a stopping step; 19. a cooling water path; 20. a stopper; 21. a limiting step; 22. a first mounting groove; 23. a guide portion; 24. a molding section; 30. an elastic member; 40. a slide seat; 41. a second guide channel; 42. a first end face; 43. a second end face; 44. an inclined guide hole; 45. a groove; 50. a shovel base; 51. a second mounting groove; 52. mounting holes; 53. a clamping groove; 60. an inclined guide post; 61. a clamping part; 70. a locking block; 71. a first abutting portion; 72. a second abutting portion; 73. a fool-proof structure; 80. a locking block pressing plate; 81. and (5) injection molding.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1 to 7 in combination, the present invention provides a stopper mechanism comprising: a drive assembly; the guide limiting assembly comprises a slide insert 10, a first guide channel 11 is arranged on the slide insert 10, and a limiting bulge 12 is arranged in the first guide channel 11; the stop block 20 is movably arranged in the first guide channel 11 and can move along the first guide channel 11 in a guiding manner, one end of the stop block 20 is suitable for being connected with the driving assembly, and the other end of the stop block 20 is suitable for being abutted to the injection molding part 81; the stop block is also provided with a stop part which forms an installation cavity with the limiting bulge 12; one end of the elastic element 30 is abutted against the blocking part, the other end of the elastic element 30 is abutted against the limiting bulge 12, and the elastic element 30 provides elastic restoring force for the resetting movement of the stop block 20; when the driving assembly is in the first movement stroke section, the stop block 20 is kept still, the guiding and limiting assembly moves towards the first direction under the driving action of the driving assembly, and when the driving assembly is in the second movement stroke section, the stop block 20 moves towards the first direction under the elastic restoring force action of the elastic piece 30.

In the above technical scheme, the slide insert 10 is provided with the first guide channel 11, the first guide channel is provided with the limiting protrusion 12, the mounting cavity is formed between the stopper 20 and the limiting protrusion 12, the elastic member 30 is mounted in the mounting cavity, one end of the elastic member 30 abuts against the stopper 20, and the other end of the elastic member 30 abuts against the limiting protrusion 12. Thus, when the stopper 20 performs a guiding motion along the first guiding channel 11 under the action of the driving assembly, the elastic element 30 is deformed by a force, and an elastic force generated by the elastic element 30 due to the deformation can provide an elastic restoring force for the resetting motion of the stopper 20.

When the driving assembly is in the first movement stroke section, the stop block 20 is kept still, the stop block 20 and the injection molding part 81 are kept relatively still, and the guiding and limiting assembly moves towards the first direction under the driving action of the driving assembly, so that the guiding and limiting assembly can be separated from the edge profile of the injection molding part firstly, and the stop block 20 still has a limiting effect on the injection molding part 81, so that the problem that the injection molding part 81 is adhered and deformed due to the fact that the injection molding part 81 is adhered and the guiding and limiting assembly moves together with the guiding and limiting assembly can be effectively prevented. And when the driving assembly is in the second movement stroke section, the stop block 20 moves towards the first direction under the elastic restoring force of the elastic part 30, at this time, the stop block 20 is separated from the injection molding part 81, and because the contact area of the stop block 20 and the injection molding part 81 is smaller than that of the guide limiting assembly and the injection molding part 81, various problems caused by adhesion can be avoided.

Therefore, the technical scheme can realize the staged delayed mold opening of the injection molding part 81, and can effectively avoid the adhesion between the injection molding part 81 and the injection molding part cavity in the mold opening process. And, compare in keeping off the needle structure, the mounted position of this application elastic component is different with the mounted position of conventional needle structure elastic component that keeps off, and conventional needle structure elastic component that keeps off is established on keeping off the needle, and the face that blocks off of needle needs to be less than the elastic component internal diameter, and in this application, because the elastic component is installed in the dog, the overall dimension of dog can be decided and do not receive the restriction of spring diameter size according to the size of the face that blocks off that needs. Like this, the staff can set for the overall dimension of dog according to the required area that blocks the face, can effectively increase the dog and to the area of the face that blocks of injection molding 81, and then increase the dog and to the power of blockking of injection molding 81, further prevent that injection molding 81 from being out of shape under the adhesion of the spacing subassembly of direction.

Referring to fig. 1 to 7, in an embodiment of the present invention, a pressing plate 13 is fixedly disposed on the slide insert 10, a limiting protrusion 12 is disposed on the pressing plate 13, one end of an elastic member 30 abuts against a sidewall of the stopper 20 facing the mounting cavity, and the other end of the elastic member 30 abuts against a sidewall of the limiting protrusion 12 facing the mounting cavity.

Through the above arrangement, the elastic member 30 can be fixedly installed in the installation cavity, and when the stopper 20 or the pressing plate 13 moves, the elastic member 30 can deform to generate an elastic force, and the elastic force can serve as an elastic restoring force for the resetting movement of the stopper 20.

In one embodiment, the resilient member 30 is embodied as a spring.

It should be noted that, in an embodiment of the present invention, the pressing plate 13 and the limiting protrusion 12 may be an integrally formed structure, or may be a separately formed and fixedly connected structure.

Referring to fig. 1 to 7 in combination, in an embodiment of the present invention, a positioning groove 14 is formed on the slide insert 10, the pressing plate 13 is fixedly installed in the positioning groove 14, an insertion inclined surface 15 is formed on a side of the limiting protrusion 12 away from the elastic member 30, the positioning groove 14 has a guide surface 16 matched with the insertion inclined surface 15, and the insertion inclined surface 15 is pressed into the first guide channel 11 along the guide surface 16; the limiting protrusion 12 comprises a first vertical side surface 17, the first vertical side surface 17 is arranged on one side of the limiting protrusion 12 close to the elastic member 30, and the elastic member 30 abuts against the first vertical side surface 17.

Through the arrangement, the pressing plate 13 is conveniently installed in the first guide channel 11, and before the pressing plate 13 is installed, the elastic piece 30 occupies a large installation space due to the fact that the elastic piece 30 is not compressed, and the pressing plate 13 cannot be directly pressed into the positioning groove 14. At this time, the stopper projection 12 is gradually pressed into the first guide passage 11 along the guide surface 16 through the insertion slope 15 and abuts against the elastic member 30. Thus, as the pressing plate 13 is pressed in, the first vertical side 17 can compress the elastic member 30 in the first direction, so that the subsequent installation process of the pressing plate 13 is easier. In addition, the pressing plate 13 is fixedly installed in the positioning groove 14, that is, the pressing plate 13 is maintained in a stationary state with respect to the positioning groove 14, and therefore, when the stopper 20 moves with respect to the pressing plate 13, the elastic member 30 is deformed to provide an elastic restoring force for the restoring action of the stopper 20.

It should be noted that, in one embodiment of the present invention, the pressing plate 13 may be installed in the positioning groove 14 by bolts.

Referring to fig. 1 to 8 in combination, in one embodiment of the present invention, the stopper 20 is provided with a limit step 21 on a lower bottom surface thereof, and the guiding and limiting assembly further includes a slide seat 40, the slide insert 10 is fixedly connected to the slide seat 40, and a stop step 18 is formed between the slide insert and the slide seat 40 at a connection position, and the stop step 18 can stop the limit step 21 to limit the movement of the stopper 20 in the first direction.

Through the setting, backstop step 18 can carry out the backstop to spacing step 21, and then carries on spacingly to the motion of dog 20 on the first direction, prevents that dog 20 from wearing out the part from first guide way 11 in too big, influences the installation of shovel base 50, prevents the too big motion that influences shovel base 50 of mould unloading compound die in-process dog 20 wearing out part simultaneously.

Referring to fig. 1 to 8 in combination, in an embodiment of the present invention, the travel seat 40 includes a second guide channel 41, a first end surface 42 and a second end surface 43, the second guide channel 41 is communicated with the first guide channel 11, the stopper 20 penetrates out of the second guide channel 41 and enters the first guide channel 11, the first guide channel 11 and the second guide channel 41 form a stopping step 18 at the first end surface 42, and the stopping step 21 can stop on the first end surface 42.

In the above technical solution, the second guide channel 41 is through with the first guide channel 11 to provide an installation space for the stopper 20, the first guide channel 11 and the second guide channel 41 form the stopping step 18 at the first end face 42, and the limiting step 21 can be stopped on the first end face 42 by the stopping step 18, so as to limit the movement of the stopper 20 in the first direction.

Referring to fig. 1 to 3 in combination, in one embodiment of the present invention, the stopper 20 is provided with a first mounting groove 22 on the upper surface, the limiting protrusion 12 extends into the first mounting groove 22, the stopper 20 includes a guiding portion 23 and a forming portion 24, the guiding portion 23 is located on the elastic member mounting side of the first mounting groove 22, and the forming portion 24 is located on the side of the first mounting groove 22 away from the elastic member mounting side; the molding portion 24 of the stopper 20 forms a molding surface in a shape of a polygon, an ellipse, or a combination of straight and curved lines on a side away from the first mounting groove 22.

In the above technical solution, the upper surface of the stopper 20 is provided with the first mounting groove 22 to provide a mounting space for the elastic member 30, and the guide portion 23 can move relative to the slide insert 10, so that the elastic member 30 can deform, and the deformation amount can change continuously along with the movement of the guide portion 23, so that the generated elastic force changes correspondingly, and an elastic restoring force is provided for the resetting movement of the stopper 20. The shaping portion 24 is located one side that the elastic component installation side was kept away from to first mounting groove 22, and one side that first mounting groove 22 was kept away from to shaping portion 24 forms the profiled surface, and the shape of profiled surface is polygon, ellipse or sharp and curved combined shape, and like this, the shape and the profiled surface of adaptation injection molding 81 that the profiled surface can be better are the whole face, consequently, it is better to block the effect, can increase substantially the shaping quality of injection molding 81.

Referring to fig. 1-3 in combination, in one embodiment of the invention, the contoured portion 24 of the stop 20 forms a contoured surface on the side away from the first mounting groove 22, the contoured surface having a shape that matches the contoured surface shape of the injection molded part 81 on that side.

Through the setting, the blocking effect of the check block 20 on the injection molding part 81 is better, and the molding quality of the injection molding part 81 can be greatly improved.

Referring to fig. 1 to 9 in combination, in one embodiment of the present invention, the driving assembly includes a shovel base 50 and a guide pin 60, the guide pin 60 is mounted in the shovel base 50 near one end of the stopper 20, the guide limiting assembly further includes a slide base 40, the slide insert 10 is fixedly connected to the slide base 40, the slide base 40 has a guide hole 44, the guide pin 60 is slidably disposed in the guide hole 44, and the driving assembly drives the slide base 40 to reciprocate along a first direction through the guide pin 60.

Through the arrangement, the driving assembly can drive the traveling seat 40 to reciprocate along the first direction through the inclined guide post 60, so that the die opening and die closing processes are realized. That is, during the mold opening or closing process of the shovel base 50, the inclined guide post 60 can move together with the shovel base 50 in the direction away from or close to the travel base 40, and at this time, the inclined guide post 60 gradually escapes from the inclined guide hole 44 or is gradually inserted into the inclined guide hole 44, so that the travel base 40 can reciprocate in the first direction.

Specifically, in one embodiment of the present invention, the stopper 20 is installed in two ways.

The first mounting step is as follows: firstly, inserting the stop block 20 from the first guide channel 11 and entering the second guide channel 41, and continuously pushing the stop block 20 until the limit step 21 of the stop block 20 is clamped on the stop step 18; then the shovel base 50 is arranged on the slide seat 40; after the elastic piece 30 is arranged in the first installation groove 22 of the stop block 20, the pressure plate 13 is pressed into the first guide channel 11 along the guide surface 16, and in the pressing process, one end of the elastic piece 30 is firstly contacted with the first vertical side surface 17 of the limiting protrusion 12 and is gradually compressed until the pressure plate 13 is completely pressed into the positioning groove 14; finally, the pressing plate 13 can be fixedly installed in the positioning groove 14 through a bolt.

The second mounting step is as follows: firstly, the elastic piece 30 is arranged in the first mounting groove 22 of the stop block 20; inserting the stopper 20 with the elastic element 30 from the first guide channel 11 into the second guide channel 41, and continuously pushing the stopper 20 until the limit step 21 of the stopper 20 is clamped on the stopper step 18; then pressing the pressing plate 13 into the first guide channel 11 along the guide surface 16, wherein in the pressing process, one end of the elastic part 30 is firstly contacted with the first vertical side surface 17 of the limiting protrusion 12 and is gradually compressed until the pressing plate 13 is completely pressed into the positioning groove 14, and after the pressing plate 13 is completely pressed into the positioning groove 14, the pressing plate 13 is fixedly arranged in the positioning groove 14 through a bolt; finally, blade base 50 is mounted on seat 40.

Referring to fig. 1 to 9 in combination, in one embodiment of the present invention, the shovel base 50 includes a clamping groove 53, the angle beam 60 has a clamping portion 61, and the angle beam 60 is clamped in the clamping groove 53 by the clamping portion 61.

Through the arrangement, the inclined guide post 60 can be clamped in the shovel base 50 and moves along with the movement of the shovel base 50, and when the shovel base 50 moves towards the direction close to or away from the slide insert 10, the inclined guide post 60 moves along with the shovel base 50 towards the direction close to or away from the slide insert 10.

It should be noted that, in an embodiment of the present invention, a groove 45 is disposed on the second end surface 43 of the seat 40, and one end of the stopper 20 close to the seat 40 penetrates through a bottom wall of the groove 45.

Referring to fig. 1 to 9, in an embodiment of the present invention, the stopper mechanism further includes a stopper block 70, the stopper block 70 is disposed on a side of the shovel base 50 facing the stopper 20, the stopper block 70 has a first abutting portion 71 and a second abutting portion 72 sequentially disposed from top to bottom, the first abutting portion 71 is a vertical surface, and an inclined guide surface of the second abutting portion 72 is parallel to a guide direction of the inclined guide post 60.

Through the arrangement, the injection molding part 81 can be opened in stages, and the adhesion between the injection molding part 81 and the injection molding part cavity in the mold opening process can be effectively avoided. In the mold opening process, the first abutting portion 71 is a vertical surface, so that the stop block 20 is always kept in a static state, the stop block 20 still has a limiting effect on the injection molding part 81, the inclined guide surface of the second abutting portion 72 is parallel to the guide direction of the inclined guide post 60, and the slide seat 40 can move in the first direction to the direction away from the injection molding part 81. Thus, the guide limiting component can be firstly separated from the edge profile of the injection molding part.

Referring collectively to fig. 1-9, in one embodiment of the invention, a locking block 70 is removably mounted to the blade base 50.

Through the arrangement, the locking block 70 can be conveniently replaced by a worker at regular intervals, and the locking effect of the locking block 70 on the stop block 20 is further ensured.

Referring to fig. 1 to 9, in an embodiment of the present invention, the stopper mechanism further includes a locking block pressing plate 80, the shovel base 50 further includes a second installation groove 51, a mounting hole 52 is formed on a bottom surface of the second installation groove 51, the locking block 70 is disposed in the mounting hole 52, and the locking block pressing plate 80 is fixedly disposed in the second installation groove 51 and presses and fixes the locking block 70 in the mounting hole 52.

Through the arrangement, the locking block 70 can be pressed and fixed in the mounting hole 52, so that the mounting space can be saved, the device is compact in structure, the locking block 70 can be kept in a static state relative to the shovel base all the time in the moving process of the shovel base 50, the movement is avoided, and the locking effect of the locking block 70 on the stop block 20 is further ensured.

Specifically, in one embodiment of the present invention, the latch 70 has a fool-proof feature 73, and the mounting hole 52 and the latch pressure plate 80 have a raised portion thereon that mates with the fool-proof feature 73. Through the cooperation of fool-proof structure 73 and the protruding portion, the locking block 70 can be prevented from being reversely assembled during installation, and the assembly efficiency is improved. In addition, the locking block 70 also has a step structure, the height of the first step in the step structure is the same as the depth of the mounting hole 52, so that the step surface of the first step is flush with the bottom surface of the second mounting groove 51, when the locking block 70 is installed in the mounting hole 52, the locking block pressing plate 80 can be covered and pressed in the second mounting groove 51, and the step surface of the first step is flush with the bottom surface of the second mounting groove 51, so that the covering and pressing surface of the locking block pressing plate 80 is simultaneously pressed on the step surface of the first step, the locking block 70 is pressed and limited, the avoiding hole is formed in the locking block pressing plate 80, and the abutting part of the locking block 70 can penetrate out of the avoiding hole and abut against the block 20.

It should be noted that, in one embodiment of the present invention, the latch pressing plate 80 may be installed in the second installation recess 51 by screws.

Referring collectively to fig. 1-9, in one embodiment of the present invention, the blade base 50 has a first stroke section and a second stroke section relative to the travel base 40, the stop 20 abuts the first abutment 71 when the blade base 50 is in the first stroke section, the stop 20 remains stationary, and the stop 20 abuts the second abutment 72 when the blade base 50 is in the second stroke section and reciprocates in the first direction with the movement of the blade base 50.

Through the arrangement, a staged mold opening mode of the injection molding part 81 and the injection molding part cavity can be realized, namely when the shovel base 50 is located at the first stroke section, the stop block 20 is abutted against the first abutting part 71, the stop block 20 is kept static, at the moment, the slide insert 10 is separated from the injection molding part 81, and the stop block 20 is still abutted against the injection molding part 81. And when shovel base 50 was located the second stroke section, dog 20 can be along with shovel base 50 is reciprocating motion in the first direction, and at this moment, dog 20 and injection molding 81 are separated, and this kind of mould opening mode in stages can effectively prevent to open the mould in-process, takes place the adhesion between dog 20 and the injection molding 81, influences the shaping effect of injection molding 81.

Referring to fig. 3 in combination, in an embodiment of the present invention, a cooling water path 19 is disposed in the slide insert 10, and the cooling water path 19 is spaced apart from the first guide passage 11. In this embodiment, the stopper 20 is adjusted to be square by a circular design, so that the area of the stopper surface can be effectively increased, and meanwhile, the straight square stopper can also more effectively avoid the row position insert pins on both sides of the stopper and the cooling water channel 19 below. In this embodiment, the shape of the stopper 20 is not limited by the elastic member, so the blocking surface area of the stopper 20 can be designed to be large, so that the stopper 20 can adopt an integral structure, and when the same blocking surface area is provided, a smaller area is occupied compared with a circular thimble structure, so that more spaces can be left for arranging the cooling water channel 19, and the limitation on the arrangement space of the cooling water channel 19 is greatly reduced, so that the overall structure of the slide insert 10 can be more compact, and under the condition that the blocking area of the stopper 20 is ensured, sufficient space can also be provided for the cooling water channel 19, thereby facilitating the optimized design of the cooling water channel 19 and improving the cooling effect of the cooling water channel 19.

In addition, referring to fig. 10 to 13 in combination, in the related art, the stopper 20 requires the row insert 3 ' and the circular stopper pin 1 ' to be arranged, so that a through hole for installing the row insert 3 ' and a through hole for installing the circular stopper pin 1 ' are required to be provided in the row insert 10, and a spring 2 ' installation hole for installing the spring 2 ' is also required to be provided in the through hole for installing the circular stopper pin 1 ', the diameter of the circular stopper pin 1 ' is 6mm, the diameter of the row insert 3 ' is 4mm, the axial distance between the two row inserts 3 ' is 36.11mm, the space between the row inserts 10 is limited, and since the space for installing the circular stopper pin is also limited, the distance between the single row insert 3 ' and the circular stopper pin is 16.3mm, and the stopper area of the circular stopper pin is 28.26mm²In this case, the blocking area of the circular needle 1 ' is too small, which easily causes insufficient blocking force, and in order to ensure the effective action area of the circular needle 1 ', the blocking area of the circular needle 1 ' needs to be set to 78.5mm²In this case, the diameter of the circular blocking needle 1 ' is about 10mm, because the thickness of the row position insert 10 is effective, the restriction of the waterway structure is received, the diameter of the circular blocking needle 1 ' cannot be too large, to realize the blocking area, it is necessary to design two circular blocking needles 1 ' to be arranged side by side for blocking, the diameters of the two circular blocking needles 1 ' are about 7.14mm, and to ensure the installation of the spring 2 ', the diameter of the hole of the spring 2 ' needs to be more than 10mm, meanwhile, the distance between the installation holes of the two circular blocking needles 1 ' needs to be large enough, and the whole wall thickness is ensured, so that the maximum distance between the two circular blocking needles 1 ' is 11+11+5 + 27mm, and the distance between the outer walls of the two circular blocking needles 1 ' and the outer wall of the through hole of the row position insert needle 3 ' on the side is about equal to the maximum distance between the outer walls of the row position insert needle 1 ' and the outer wall of the row position insertSince (36.11-27-4)/2 is 2.5mm, the wall thickness between the through hole of the slide insert pin 3 ' and the hole of the spring 2 ' is too thin, and the wall thickness between the hole of the spring 2 ' and the through hole in which the slide insert pin 3 ' is provided cannot be satisfied, and therefore, it is difficult to satisfy the requirement for the blocking area of the injection molded part 81 by providing the circular stopper pin 1 '.

In the present application, since the shape of the stopper 2020 is not limited, a quasi-rectangular structure may be adopted, and in the cross-sectional structure, the width dimension is limited to 6mm, the length dimension is limited to 20mm, the wall thickness between the first guide channel 11 and the two slide inserts 10 in the horizontal direction is (36.11-20-4)/2 is 6.5mm, and the blocking area that can be realized is 120mm²Not only block the area and be greater than required area of blockking far away, and the size on position mold insert 10 thickness of walking is also not greater than the diameter of original circular fender needle 1 ', and with the wall thickness between the position mold insert 10 of walking also can satisfy the wall thickness requirement effectively, and simultaneously, because dog 2020 has compressed the size on position mold insert 10 thickness direction of walking, consequently when guaranteeing sufficient area of blockking, also leave bigger space for cooling water route 1919's design, conveniently realize the position mold insert 10 of walking in the small-size scope more, the structural configuration of cooling water route 19 and dog 20, overall configuration is more reasonable.

According to an embodiment of the present invention, an injection mold includes the above-described stopper mechanism.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects: through being provided with first direction passageway on the position mold insert, be provided with spacing arch in the first direction passageway, make the one end butt of elastic component in dog, the other end butt of elastic component in spacing arch. Like this, when the dog was the guiding motion along first direction passageway under drive assembly's effect, the elastic component can the atress produce deformation, and the elastic component can be as the elastic restoring force that the dog moved back because of the elastic force that deformation produced. Compared with the traditional needle blocking structure, the block is determined according to the size of the blocking surface and is not limited by the diameter of the spring, and the staff can set the overall size of the block according to the area of the required blocking surface, so that the area of the blocking surface of the block on the injection molding part can be effectively increased, and the blocking force of the block on the injection molding part is further increased.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in other sequences than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A stop mechanism, comprising:

a drive assembly;

the guide limiting assembly comprises a slide insert (10), a first guide channel (11) is arranged on the slide insert (10), and a limiting bulge (12) is arranged in the first guide channel (11);

the stop block (20) is movably arranged in the first guide channel (11) and can move along the first guide channel (11) in a guide mode, one end of the stop block (20) is suitable for being connected with the driving assembly, and the other end of the stop block is suitable for abutting against an injection molding piece; the stop block is also provided with a stop part forming an installation cavity with the limiting bulge (12);

one end of the elastic piece (30) is abutted to the blocking part, the other end of the elastic piece (30) is abutted to the limiting bulge (12), and the elastic piece (30) provides elastic restoring force for the resetting movement of the stop block (20);

when the driving assembly is located at the first movement stroke section, the stop block (20) keeps still, the guide limiting assembly moves towards the first direction under the driving action of the driving assembly, and when the driving assembly is located at the second movement stroke section, the stop block (20) moves towards the first direction under the elastic restoring force of the elastic piece (30).

2. A stop mechanism according to claim 1, wherein a pressure plate (13) is fixedly arranged on the slide insert (10), and the limiting protrusion (12) is arranged on the pressure plate (13).

3. A stop mechanism according to claim 2, wherein a positioning groove (14) is formed in the slide insert (10), the pressing plate (13) is fixedly mounted in the positioning groove (14), an insertion slope (15) is formed on one side of the limiting protrusion (12) away from the elastic member (30), the positioning groove (14) has a guide surface (16) matched with the insertion slope (15), and the insertion slope (15) is pressed into the first guide channel (11) along the guide surface (16).

4. A stop mechanism according to claim 2, wherein said limit projection (12) comprises a first vertical side (17), said first vertical side (17) being arranged on a side of said limit projection (12) close to said elastic member (30), said elastic member (30) abutting against said first vertical side (17).

5. A stop mechanism according to any of claims 1 to 4, wherein a lower bottom surface of the stop (20) is provided with a stop step (21), the guiding and limiting assembly further comprising a running seat (40), the running insert (10) being fixedly connected with the running seat (40) and forming a stop step (18) with the running seat (40) at a connection location, the stop step (18) being capable of stopping the stop step (21) for limiting movement of the stop (20) in the first direction.

6. A stop mechanism according to claim 5, wherein the travel seat (40) comprises a second guide channel (41), a first end surface (42) and a second end surface (43), the second guide channel (41) is communicated with the first guide channel (11), the stop (20) penetrates out of the second guide channel (41) and enters the first guide channel (11), the first guide channel (11) and the second guide channel (41) form the stop step (18) at the first end surface (42), and the limit step (21) can stop on the first end surface (42).

7. A stop mechanism according to any one of claims 1 to 4, wherein the upper surface of the stop (20) is provided with a first mounting groove (22), the restricting projection (12) projects into the first mounting groove (22), the stop (20) comprises a guide portion (23) and a profiled portion (24), the guide portion (23) is located on the spring mounting side of the first mounting groove (22), and the profiled portion (24) is located on the side of the first mounting groove (22) remote from the spring mounting side.

8. A stop mechanism according to claim 7, wherein the profiled portion (24) forms a profiled surface on a side remote from the first mounting recess (22), the profiled surface being in the shape of a polygon, an ellipse, a combination of straight and curved lines or being adapted to the profiled surface of an injection moulded part.

9. A stop mechanism according to any one of claims 1 to 4, wherein the driving assembly comprises a shovel base (50) and a tilt guide post (60), the tilt guide post (60) is mounted in the shovel base (50) near one end of the stop (20), the guiding and limiting assembly further comprises a slide seat (40), the slide insert (10) is fixedly connected with the slide seat (40), the slide seat (40) has a tilt guide hole (44), the tilt guide post (60) is slidably disposed in the tilt guide hole (44), and the driving assembly drives the slide seat (40) to reciprocate along the first direction through the tilt guide post (60).

10. A stop mechanism according to claim 9, further comprising a stop block (70), wherein the stop block (70) is disposed on a side of the blade base (50) facing the stop block (20), the stop block (70) has a first abutting portion (71) and a second abutting portion (72) sequentially disposed from top to bottom, the first abutting portion (71) is a vertical surface, and the second abutting portion (72) is parallel to a guiding direction of the angle guide post (60).

11. A stop mechanism according to claim 10, wherein said stop block (70) is removably mounted on said blade base (50).

12. A stop mechanism according to claim 11, further comprising a stop block pressing plate (80), wherein the shovel base (50) further comprises a second installation groove (51), a mounting hole (52) is formed in a bottom surface of the second installation groove (51), the stop block (70) is disposed in the mounting hole (52), and the stop block pressing plate (80) is fixedly disposed in the second installation groove (51) and presses and fixes the stop block (70) in the mounting hole (52).

13. A stop mechanism according to claim 10, wherein said blade base (50) has a first stroke and a second stroke relative to said travel base (40), said stop (20) abutting said first abutment (71) when said blade base (50) is in said first stroke, said stop (20) remaining stationary, said stop (20) abutting said second abutment (72) when said blade base (50) is in said second stroke and reciprocating in a first direction with movement of said blade base (50).

14. A stop mechanism according to any one of claims 1 to 4, wherein the slide insert (10) incorporates a cooling water channel (19), the cooling water channel (19) being spaced from the first guide channel (11).

15. An injection mould comprising a stop mechanism as claimed in any one of claims 1 to 14.