CN114734589B - Stop block mechanism and injection mold - Google Patents
Stop block mechanism and injection mold Download PDFInfo
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- CN114734589B CN114734589B CN202210439496.7A CN202210439496A CN114734589B CN 114734589 B CN114734589 B CN 114734589B CN 202210439496 A CN202210439496 A CN 202210439496A CN 114734589 B CN114734589 B CN 114734589B
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- stop
- stop block
- guide
- guiding
- stopper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
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- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The application provides a stop block mechanism and an injection mold. The stopper mechanism includes: a drive assembly; the guiding limiting assembly comprises a slide insert, a first guiding channel is arranged on the slide insert, and a limiting protrusion is arranged in the first guiding 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 against the injection molding piece; the stop block is also provided with a blocking 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, so that elastic restoring force is provided for the resetting movement of the stop block; when the driving assembly is in the first movement stroke section, the stop block keeps motionless, the guide limiting assembly moves to 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 to the first direction under the action of elastic restoring force of the elastic piece. According to the stop block mechanism disclosed by the technical scheme of the application, the area of the stop block surface of the stop block on the injection molding part can be effectively increased.
Description
Technical Field
The application 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 an injection molding piece is stuck and pulled by a row-position cavity, in the prior art, one or more sets of row-position needle blocking mechanisms with sleeved springs reset are designed in a region where the injection molding piece is seriously adhered, so that the needle blocking and the injection molding piece are kept relatively stopped in the earlier stage of row-position mold opening, other row-position cavities are firstly separated from the edge profile of the injection molding piece, and then the needle blocking and the row position are integrally and continuously opened to a row-position stroke limiting point. The problem of line position sticking is solved by dividing the adhesion force of a line position injection molding cavity to an injection molding into two parts with large front and small back and performing staged mold opening.
When the sticking and drawing products of the line cavity are serious, one or more sets of line needle blocking mechanisms sleeved with springs are designed in the area with serious product adhesion in the prior art to block the products at the sticking and drawing parts of the line cavity for a certain distance firstly by something in the initial stage of line mold opening, and the line mold sticking problem is solved by carrying out staged demolding, wherein the conventional line needle blocking structure is shown in fig. 10, but the line circular needle blocking structure has more application defects for products with more structural characteristics, and the main steps are as follows:
1. the area of the blocking surface of the circular blocking needle 1' is too small, and the blocking force is insufficient, so that the white top, the high top and the deformation of the corresponding part of the product are easily caused.
2. The round shield needle 1' is easily thin steel by edge design as shown in fig. 11.
3. The circular blocking needle has poor applicability and bottleneck application. The space of the round needle blocking mechanism required by the design is determined by the diameter of the spring 2' sleeved on the round needle blocking 1' for providing resetting power for the round needle blocking 1', namely the blocking surface of the round needle blocking 1' is always smaller than the inner diameter of the spring 2', as shown in fig. 12 and 13. Because the round needle blocking 1' is required to be designed on the two sides of the area of the product sticking mold, the slide insert needle 3' is arranged on the two sides of the area, and the slide cooling waterway 4' is arranged below the area, the needle blocking mechanism is designed for the product, and the blocking force is too small if a set of needle blocking mechanism is obviously designed; if two sets are designed, the space is obviously insufficient.
Disclosure of Invention
The application 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 application, there is provided a stopper mechanism comprising:
a drive assembly;
the guiding limiting assembly comprises a slide insert, a first guiding channel is arranged on the slide insert, and a limiting protrusion is arranged in the first guiding 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 piece; the stop block is also provided with a blocking part which forms an installation cavity with the limit 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 keeps motionless, the guide limiting assembly moves to 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 to the first direction under the action of elastic restoring force of the elastic piece.
Further, a pressing plate is fixedly arranged on the slide insert, and the limiting protrusions are arranged on the pressing plate.
Further, a positioning groove is formed in the slide insert, the pressing plate is fixedly installed in the positioning groove, an inserting inclined surface is arranged on one side, away from the elastic piece, of the limiting protrusion, the positioning groove is provided with a guiding surface matched with the inserting inclined surface, and the inserting inclined surface is pressed into the first guiding channel along the guiding surface.
Further, the limiting protrusion comprises a first vertical side face, the first vertical side face is arranged on one side, close to the limiting piece, of the limiting protrusion, and the elastic piece is abutted to the first vertical side face.
Further, the lower bottom surface of the stop block is provided with a limiting step, the guiding limiting assembly further comprises a slide seat, the slide insert is fixedly connected with the slide seat, a stop step is formed between the slide insert and the slide seat at a connecting position, and the stop step can stop the limiting step so as to limit the movement of the stop block in the first direction.
Further, 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 be stopped on the first end face.
Further, the upper surface of dog is provided with first mounting groove, and spacing arch stretches into in the first mounting groove, and the dog includes guiding part and shaping portion, and guiding part is located the elastic component installation side of first mounting groove, and shaping portion is located one side that the elastic component installation side was kept away from to first mounting groove.
Further, the molding portion of the stopper forms a molding surface on a side away from the first mounting groove, the molding surface having a polygonal shape, an elliptical shape, or a combination of a straight line and a curved line.
Further, the molding portion of the stopper forms a molding surface on a side away from the first mounting groove, and the shape of the molding surface is adapted to the shape of the molding surface of the injection molding member on the side.
Further, the driving component comprises a shovel base and an inclined guide post, one end of the inclined guide post, which is close to the stop block, is installed in the shovel base, the guiding limiting component further comprises a line seat, the line insert is fixedly connected with the line seat, the line seat is provided with an inclined guide hole, the inclined guide post is arranged in the inclined guide hole in a sliding mode, and the driving component drives the line seat to reciprocate along a first direction through the inclined guide post.
Further, the stop block mechanism further comprises a locking block, the locking block is arranged on one side of the shovel base, facing the stop block, and the locking block is provided with a first abutting part and a second abutting part which are sequentially arranged from top to bottom, wherein the first abutting part is a vertical surface, and the second abutting part is parallel to the guiding direction of the inclined guide pillar.
Further, the locking piece is detachably mounted on the shovel base.
Further, the stop block mechanism further comprises a locking block pressing plate, the shovel base further comprises a second installation groove, the bottom surface of the groove of the second installation groove is provided with an installation hole, the locking block is arranged in the installation hole, the locking block pressing plate is fixedly arranged in the second installation groove, and the locking block is pressed and fastened in the installation hole.
Further, the shovel base is provided with a first travel section and a second travel section relative to the travel seat, when the shovel base is positioned in the first travel section, the stop block is abutted with the first abutting part, the stop block is kept static, and when the shovel base is positioned in the second travel section, the stop block is abutted with the second abutting part and moves back and forth in the first direction along with the movement of the shovel base.
Further, a cooling water channel is arranged in the slide insert, and the cooling water channel and the first guide channel are arranged at intervals.
According to another aspect of the present application, there is provided an injection mold including the stopper mechanism described above.
By applying the technical scheme of the application, the slide insert is provided with the first guide channel, and the first guide channel is internally provided with the limiting protrusion, so that 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 protrusion. Like this, when the dog is under drive assembly's effect along first guide way conduct guided movement, the elastic component can atress produce deformation, and the elastic force that the elastic component produced because of the deformation can be as the elasticity restoring force of dog activity that resets. The installation position of the elastic piece is different from that of the elastic piece with the conventional needle blocking structure, the elastic piece with the conventional needle blocking structure is sleeved on the needle blocking structure, and the blocking surface of the needle blocking structure is required to be smaller than the inner diameter of the elastic piece. Like this, the staff can set for the overall dimension of dog according to the area of required blocking the face, can effectively increase the dog to the blocking face area of injection molding, and then increase the dog to the blocking force of injection molding, further prevent the injection molding deformation under the adhesion effect of direction spacing subassembly.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 shows a schematic perspective view of a guide and stop assembly according to an embodiment of the present application;
FIG. 2 shows a schematic perspective view of a stopper according to an embodiment of the present application;
FIG. 3 shows a cross-sectional view of a stop mechanism of an embodiment of the present application;
FIG. 4 shows a schematic perspective view of a slide insert according to an embodiment of the present application;
FIG. 5 shows a schematic perspective view of a shovel base according to an embodiment of the present application;
FIG. 6 shows a schematic perspective view of a locking block according to an embodiment of the present application;
FIG. 7 shows a schematic perspective view of a platen according to an embodiment of the present application;
FIG. 8 shows a partial enlarged view at A of FIG. 3;
FIG. 9 shows a schematic overall construction of a drive assembly of an embodiment of the present application;
FIG. 10 shows a block diagram of the prior art engagement between a shift pin and an injection molding;
FIG. 11 shows a block diagram of the position of a prior art shift pin on a shift insert;
FIG. 12 is a diagram showing a first positional relationship between a prior art shift pin and a shift insert pin and a cooling water path; and
fig. 13 shows a second positional relationship between a prior art shift pin and a shift insert pin and a cooling water channel.
Wherein the above figures include the following reference numerals:
10. a slide insert; 11. a first guide channel; 12. a limit protrusion; 13. a pressing plate; 14. a positioning groove; 15. a splicing inclined plane; 16. a guide surface; 17. a first vertical side; 18. a stop step; 19. a cooling water path; 20. a stop block; 21. a limit step; 22. a first mounting groove; 23. a guide part; 24. a molding part; 30. an elastic member; 40. a row 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. a mounting hole; 53. a clamping groove; 60. oblique guide posts; 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, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
Referring now to fig. 1-7 in combination, the present application provides a stop mechanism comprising: a drive assembly; the guiding and limiting assembly comprises a slide insert 10, a first guiding channel 11 is arranged on the slide insert 10, and a limiting protrusion 12 is arranged in the first guiding 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 way, one end of the stop block 20 is suitable for being connected with the driving assembly, and the other end is suitable for being abutted against the injection molding piece 81; the stop block is also provided with a blocking part which forms an installation cavity with the limit bulge 12; the elastic piece 30, one end of the elastic piece 30 is abutted against the blocking part, the other end is abutted against the limiting protrusion 12, and the elastic piece 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 motionless, the guide limiting assembly moves to 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 to the first direction under the action of the elastic restoring force 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 internally provided with the limit protrusion 12, an installation cavity is formed between the stop block 20 and the limit protrusion 12, the elastic piece 30 is installed in the installation cavity, one end of the elastic piece 30 is abutted to the stop block 20, and the other end of the elastic piece 30 is abutted to the limit protrusion 12. Thus, when the stopper 20 performs guiding movement along the first guiding channel 11 under the action of the driving component, the elastic member 30 is deformed by force, and the elastic force generated by the deformation of the elastic member 30 can provide elastic restoring force for the restoring movement of the stopper 20.
When the driving assembly is in the first movement stroke section, the stop block 20 is kept motionless, the stop block 20 and the injection molding piece 81 are kept motionless relatively, and the guiding limiting assembly moves towards the first direction under the driving action of the driving assembly, so that the guiding limiting assembly can be firstly separated from the edge profile of the injection molding piece, the stop block 20 still plays a limiting role on the injection molding piece 81, and the injection molding piece 81 can be effectively prevented from being adhered to the guiding limiting assembly and moves along with the guiding limiting assembly, so that the injection molding piece 81 is adhered and deformed. When the driving assembly is in the second movement stroke section, the stop block 20 moves in the first direction under the action of the elastic restoring force of the elastic member 30, and at this time, the stop block 20 is separated from the injection molding member 81, and various problems caused by adhesion are avoided because the contact area between the stop block 20 and the injection molding member 81 is smaller than that between the guide limiting assembly and the injection molding member 81.
From the above, the technical scheme can realize staged delayed mold opening of the injection molding part 81, and can effectively avoid adhesion between the injection molding part 81 and the injection molding part cavity in the mold opening process. Compared with the blocking needle structure, the mounting position of the elastic piece is different from that of the elastic piece of the conventional blocking needle structure, the elastic piece of the conventional blocking needle structure is sleeved on the blocking needle, and the blocking surface of the blocking needle is required to be smaller than the inner diameter of the elastic piece. Like this, the staff can set for the overall dimension of dog according to the area of required blocking the face, can effectively increase the dog and to the blocking face area of injection molding 81, and then increase the dog and to the blocking force of injection molding 81, further prevent the injection molding 81 deformation under the adhesion effect of direction spacing subassembly.
Referring to fig. 1 to 7 in combination, in one embodiment of the present application, 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 the 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 stop block 20 or the pressing plate 13 moves, the elastic member 30 deforms to generate an elastic force, and the elastic force can be used as an elastic restoring force for the return movement of the stop block 20.
In one embodiment, the elastic member 30 is embodied as a spring.
It should be noted that, in an embodiment of the present application, the pressing plate 13 and the limiting protrusion 12 may be formed integrally or formed separately and fixedly connected.
Referring to fig. 1 to 7 in combination, in one embodiment of the present application, a positioning groove 14 is provided on the slide insert 10, a pressing plate 13 is fixedly installed in the positioning groove 14, a plugging inclined surface 15 is provided on one side of the limiting protrusion 12 away from the elastic member 30, the positioning groove 14 has a guiding surface 16 matched with the plugging inclined surface 15, and the plugging inclined surface 15 is pressed into the first guiding channel 11 along the guiding surface 16; the limiting protrusion 12 comprises a first vertical side surface 17, the first vertical side surface 17 is arranged on one side, close to the elastic piece 30, of the limiting protrusion 12, and the elastic piece 30 is abutted 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 larger installation space because 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 limit projection 12 is gradually pressed into the first guide channel 11 along the guide surface 16 by the insertion slope 15, and abuts against the elastic member 30. In this way, as the pressing plate 13 is continuously pressed in, the first vertical side 17 can compress the elastic member 30 in the first direction, so that the subsequent mounting 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 kept stationary relative to the positioning groove 14, so that when the stop 20 moves relative to the pressing plate 13, the elastic member 30 deforms, thereby providing an elastic restoring force for the restoring action of the stop 20.
It should be noted that, in one embodiment of the present application, the pressing plate 13 may be mounted in the positioning groove 14 by bolts.
Referring to fig. 1 to 8 in combination, in one embodiment of the present application, the lower bottom surface of the stopper 20 is provided with a limiting step 21, the guide limiting assembly further includes a slide seat 40, the slide insert 10 is fixedly connected with 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 limiting step 21 to limit the movement of the stopper 20 in the first direction.
Through the arrangement, the stop step 18 can stop the limiting step 21, further limit the movement of the stop block 20 in the first direction, prevent the stop block 20 from penetrating out of the first guide channel 11 too much to influence the installation of the shovel base 50, and prevent the movement of the shovel base 50 from being influenced by the too much penetrating out of the stop block 20 in the die opening and closing process.
Referring to fig. 1 to 8 in combination, in one embodiment of the present application, the 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 passes through 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 stop step 18 at the first end surface 42, and the stop step 21 can stop on the first end surface 42.
In the above technical solution, the second guide channel 41 is communicated with the first guide channel 11 to provide an installation space for the stop block 20, the first guide channel 11 and the second guide channel 41 form the stop step 18 at the first end face 42, and the stop step 21 can stop on the first end face 42 through the stop step 18, so as to stop the movement of the stop block 20 in the first direction.
Referring to fig. 1 to 3 in combination, in one embodiment of the present application, the stopper 20 is provided with a first mounting groove 22 on an upper surface thereof, the stopper 20 includes a guide portion 23 and a forming portion 24, the guide portion 23 is located at an elastic member mounting side of the first mounting groove 22, and the forming portion 24 is located at a 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 on a side away from the first mounting groove 22, the molding surface having a polygonal shape, an elliptical shape, or a combination of a straight line and a curved line.
In the above technical solution, the first mounting groove 22 is provided on the upper surface of the stop 20, to provide a mounting space for the elastic element 30, and the guide portion 23 can move relative to the slide insert 10, so that the elastic element 30 deforms, and the deformation amount changes continuously 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 restoring action of the stop 20. The forming part 24 is located at one side of the first mounting groove 22 away from the elastic member mounting side, and one side of the forming part 24 away from the first mounting groove 22 forms a forming surface, the forming surface has a polygonal shape, an elliptical shape or a combination of a straight line and a curved line, so that the forming surface can better adapt to the shape of the injection molding member 81 and the forming surface is the whole surface, and therefore, the blocking effect is better, and the forming quality of the injection molding member 81 can be greatly improved.
Referring to fig. 1 to 3 in combination, in one embodiment of the present application, the molding portion 24 of the stopper 20 forms a molding surface on a side away from the first mounting groove 22, the molding surface having a shape that matches the molding surface shape of the injection-molded member 81 on the side.
Through the arrangement, the blocking effect of the stop block 20 on the injection molding piece 81 is better, and the molding quality of the injection molding piece 81 can be greatly improved.
Referring to fig. 1 to 9 in combination, in one embodiment of the present application, the driving assembly includes a shovel base 50 and a diagonal guide post 60, one end of the diagonal guide post 60 near the stop 20 is installed in the shovel base 50, the guiding and limiting assembly further includes a slide seat 40, the slide insert 10 is fixedly connected with the slide seat 40, the slide seat 40 has a diagonal guide hole 44, the diagonal guide post 60 is slidably disposed in the diagonal guide hole 44, and the driving assembly drives the slide seat 40 to reciprocate along the first direction through the diagonal guide post 60.
Through the arrangement, the driving assembly can drive the row seat 40 to reciprocate along the first direction through the inclined guide pillar 60, so as to realize the mold opening and closing process. That is, during the process of die opening or die closing of the shovel base 50, the inclined guide post 60 can move along with the shovel base 50 in a direction away from or close to the slide seat 40, and at this time, the inclined guide post 60 gradually falls out of the inclined guide hole 44 or gradually inserts into the inclined guide hole 44, so that the slide seat 40 can reciprocate in the first direction.
Specifically, in one embodiment of the present application, the stop 20 is mounted in two ways.
The first mounting procedure is as follows: firstly, inserting the stop block 20 from the first guide channel 11 into the second guide channel 41, and continuing 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 member 30 is installed in the first installation groove 22 of the stop block 20, the pressing 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 member 30 is contacted with the first vertical side surface 17 of the limiting protrusion 12 first, and is gradually compressed until the pressing 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 bolts.
The second mounting procedure is as follows: firstly, the elastic member 30 is fitted into the first mounting groove 22 of the stopper 20; inserting the stop block 20 with the elastic piece 30 from the first guide channel 11 into the second guide channel 41, and continuing pushing the stop block 20 until the limit step 21 of the stop block 20 is clamped on the stop 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 piece 30 is contacted with the first vertical side surface 17 of the limiting protrusion 12, and 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, the shovel base 50 is mounted on the slide base 40.
Referring to fig. 1 to 9 in combination, in one embodiment of the present application, the shovel base 50 includes a clamping groove 53, the oblique guide post 60 has a clamping portion 61, and the oblique guide post 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 move along with the movement of the shovel base 50, and when the shovel base 50 moves towards or away from the slide insert 10, the inclined guide post 60 moves along with the shovel base 50 towards or away from the slide insert 10.
It should be noted that, in one embodiment of the present application, the second end surface 43 of the seat 40 is provided with a groove 45, and one end of the stop 20 near the seat 40 passes through the bottom wall of the groove 45.
Referring to fig. 1 to 9 in combination, in an embodiment of the present application, the stopper mechanism further includes a locking block 70, where the locking block 70 is disposed on a side of the shovel base 50 facing the stopper 20, and the locking block 70 has a first abutment portion 71 and a second abutment portion 72 sequentially disposed from top to bottom, the first abutment portion 71 is a vertical surface, and a guiding direction of the second abutment portion 72 is parallel to a guiding direction of the oblique guide post 60.
Through the arrangement, the injection molding piece 81 can be opened in stages, and adhesion between the injection molding piece 81 and an injection molding piece cavity in the mold opening process can be effectively avoided. In the mold opening process, since the first abutting portion 71 is a vertical surface, the stop 20 is still in a static state, the stop 20 still plays a limiting role on the injection molding member 81, the inclined guiding surface of the second abutting portion 72 is parallel to the guiding direction of the inclined guiding pillar 60, and the slide seat 40 can move in the first direction in a direction away from the injection molding member 81. In this way, the guiding and limiting assembly can be firstly disengaged from the injection molding rib.
Referring now to fig. 1-9 in combination, in one embodiment of the present application, a locking block 70 is removably mounted to the blade base 50.
Through the arrangement, workers can conveniently replace the locking block 70 at regular intervals, and further the locking effect of the locking block 70 on the stop block 20 is guaranteed.
Referring to fig. 1 to 9 in combination, in one embodiment of the present application, the stopper mechanism further includes a locking piece pressing plate 80, the shovel base 50 further includes a second mounting groove 51, a mounting hole 52 is provided at a bottom surface of the second mounting groove 51, the locking piece 70 is provided in the mounting hole 52, the locking piece pressing plate 80 is fixedly provided in the second mounting groove 51, and the locking piece 70 is compressively fixed 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 structure is compact, the locking block 70 can be kept still relative to the shovel base in the moving process of the shovel base 50, the movement is avoided, and the locking effect of the locking block 70 to the stop block 20 is further ensured.
Specifically, in one embodiment of the present application, the locking block 70 has a fool-proof structure 73, and the mounting hole 52 and the locking block pressing plate 80 have protrusions thereon that cooperate with the fool-proof structure 73. By the cooperation of the fool-proof structure 73 and the protruding portion, the reverse assembly of the locking block 70 during the installation can be avoided, and the assembly efficiency can be improved. In addition, the locking piece 70 further has a step structure, in which the height of the first step 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 piece 70 is mounted in the mounting hole 52, the locking piece pressing plate 80 can be pressed into the second mounting groove 51, and since the step surface of the first step is flush with the bottom surface of the second mounting groove 51, the pressing surface of the locking piece pressing plate 80 is also pressed onto the step surface of the first step, the locking piece 70 is pressed and limited, the avoidance hole is provided on the locking piece pressing plate 80, and the abutting portion of the locking piece 70 can penetrate from the avoidance hole and form the abutting joint with the stop block 20.
It should be noted that, in one embodiment of the present application, the locking piece pressing plate 80 may be mounted in the second mounting groove 51 by a screw.
Referring to fig. 1 to 9 in combination, in one embodiment of the present application, the blade base 50 has a first stroke section and a second stroke section with respect to the stroked base 40, the stopper 20 abuts against the first abutment 71 when the blade base 50 is located in the first stroke section, the stopper 20 remains stationary, and the stopper 20 abuts against the second abutment 72 when the blade base 50 is located in the second stroke section and reciprocates in the first direction with the movement of the blade base 50.
Through the above arrangement, the 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 positioned at the first travel section, the stop block 20 is abutted with the first abutting part 71, the stop block 20 is kept static, at this time, the slide insert 10 is separated from the injection molding part 81, and the stop block 20 is still abutted with the injection molding part 81. And when the shovel base 50 is located in the second stroke section, the stop block 20 can reciprocate along with the shovel base 50 in the first direction, and at this time, the stop block 20 is separated from the injection molding piece 81, and the staged mold opening mode can effectively prevent adhesion between the stop block 20 and the injection molding piece 81 in the mold opening process, so that the molding effect of the injection molding piece 81 is affected.
Referring to fig. 3 in combination, in one embodiment of the present application, the slide insert 10 has a cooling water channel 19 built therein, and the cooling water channel 19 is spaced apart from the first guide channel 11. In this embodiment, the stop 20 is adjusted to be square by a circular design, so that the stop surface area can be effectively increased, and meanwhile, the straight square stop can also more effectively avoid the slide insert pins on two sides of the stop and the cooling waterway 19 below. In this embodiment, the shape of the stop 20 is not limited by the elastic element, so the stop surface area of the stop 20 can be designed to be larger, so that the stop 20 can adopt an integral structure, and under the condition of providing the same stop surface area, a smaller area is occupied relative to the circular thimble structure, so that more space can be left for arranging the cooling waterway 19, the arrangement space of the cooling waterway 19 is limited to be greatly reduced, the overall structure of the slide insert 10 can be more compact, and under the condition of ensuring the stop surface area of the stop 20, sufficient space can be provided for the cooling waterway 19, so that the optimization design of the cooling waterway 19 is facilitated, and the cooling effect of the cooling waterway 19 is improved.
Further, as shown in fig. 10 to 13 in combination, in the related art, the stopper 20 mechanism needs to arrange the row insert pin 3' and the circular stopper pin 1', so that the through hole for mounting the row insert pin 3' and the through hole for mounting the circular stopper pin 1' need to be provided on the row insert 10, and at the same time, the spring 2' mounting hole for mounting the spring 2' needs to be provided at the through hole for mounting the circular stopper pin 1', the circular stopper pin1 'has a diameter of 6mm, the row-position insert pins 3' have a diameter of 4mm, the axial distance between the two row-position insert pins 3 'is 36.11mm, the space between the row-position inserts 10 is limited, the space for installing the circular ejector pins is limited, the distance between the single row-position insert pin 3' and the circular ejector pins is 16.3mm, and the blocking area of the circular ejector pins is 28.26mm 2 In this case, the blocking area of the circular blocking needle 1' is too small, which easily causes insufficient blocking force, and in order to ensure the effective acting area of the circular blocking needle 1', the blocking area of the circular blocking needle 1' needs to be set to 78.5mm 2 Above, at this time, the diameter of the round retaining pin 1 'is about 10mm, because the thickness of the row position insert 10 is effective, the diameter of the round retaining pin 1' cannot be too large due to the limitation of the waterway structure, the above-mentioned retaining area needs to be realized, two round retaining pins 1 'are required to be arranged side by side to be blocked, the diameters of the two round retaining pins 1' are about 7.14mm, the installation of the spring 2 'needs to be ensured, the diameter of the hole of the spring 2' needs to be above 10mm, meanwhile, the distance between the installation holes of the two round retaining pins 1 'needs to be large enough, the whole wall thickness is ensured, so that the maximum distance between the two round retaining pins 1' is 11+11+5=27 mm, the distance between the outer walls of the two round retaining pins 1 'and the outer walls of the through holes of the row position insert 3' on the side of the round retaining pins 1 'is about (36.11-27-4)/2=2.5 mm, the wall thickness between the through holes of the row position insert 3' and the spring 2 'is easy to be too thin, and the wall thickness between the through holes of the spring 2' and the through holes of the spring 2 'needs to be difficult to meet the requirement of the wall thickness between the through hole of the insert 1' and the insert for setting of the round insert.
In the present application, however, since the shape of the stopper 2020 is not limited, a rectangular-like structure may be adopted, and in the cross-sectional structure, the width dimension is limited to 6mm, the length dimension is limited to 20mm, and the wall thickness between the first guide passage 11 and the two row inserts 10 in the horizontal direction is (36.11-20-4)/2=6.5 mm, and the blocking area that can be achieved is 120mm 2 Not only the blocking area is far larger than the required blocking area, but also the dimension of the thickness of the row insert 10 is not larger than the diameter of the original round blocking needle 1', and the wall thickness between the row insert 10 and the round blocking needle can be effectively fullThe requirement of the wall thickness is met, meanwhile, the stopper 2020 compresses the dimension of the row-position insert 10 in the thickness direction, so that a larger space is reserved for the design of the cooling waterway 1919 while a sufficient blocking area is ensured, the structural layout of the row-position insert 10, the cooling waterway 19 and the stopper 20 in a small-size range is more convenient to realize, and the overall layout is more reasonable.
According to an embodiment of the present application, an injection mold includes the above-described stopper mechanism.
From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects: through being provided with first guide way on the line position mold insert, be provided with spacing arch in the first guide way, make the one end butt in the dog of elastic component, the other end butt in spacing arch of elastic component. Like this, when the dog is under drive assembly's effect along first guide way conduct guided movement, the elastic component can atress produce deformation, and the elastic force that the elastic component produced because of the deformation can be as the elasticity restoring force of dog activity that resets. And compare in traditional fender needle structure, the overall dimension of dog is according to the big or small decision of blocking the face, and does not receive the restriction of spring diameter size, and the staff can set for the overall dimension of dog according to the area of required blocking the face, like this, can effectively increase the dog to the area of blocking the face of injection molding, and then increase the dog to the blocking force of injection molding.
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 exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (13)
1. A stop mechanism, comprising:
a drive assembly;
the guiding limiting assembly comprises a slide insert (10), a first guiding channel (11) is arranged on the slide insert (10), and a limiting protrusion (12) is arranged in the first guiding channel (11);
the stop block (20) is movably arranged in the first guide channel (11) and can move in a guide way along the first guide channel (11), 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 being abutted against an injection molding piece; the stop block is also provided with a blocking part which forms an installation cavity with the limit bulge (12);
one end of the elastic piece (30) is abutted against the blocking part, the other end of the elastic piece (30) is abutted against the limiting protrusion (12), and the elastic piece (30) provides elastic restoring force for the resetting movement of the stop block (20);
when the driving assembly is in a first movement stroke section, the stop block (20) is kept motionless, the guide limiting assembly moves in a first direction under the driving action of the driving assembly, and when the driving assembly is in a second movement stroke section, the stop block (20) moves in the first direction under the action of the elastic restoring force of the elastic piece (30);
a pressing plate (13) is fixedly arranged on the slide insert (10), and the limiting protrusion (12) is arranged on the pressing plate (13);
the novel slide insert is characterized in that a positioning groove (14) is formed in the slide insert (10), the pressing plate (13) is fixedly installed in the positioning groove (14), an inserting inclined surface (15) is arranged on one side, away from the elastic piece (30), of the limiting protrusion (12), the positioning groove (14) is provided with a guiding surface (16) matched with the inserting inclined surface (15), and the inserting inclined surface (15) is pressed into the first guiding channel (11) along the guiding surface (16).
2. The stop mechanism according to claim 1, characterized in that the limit projection (12) comprises a first vertical side (17), the first vertical side (17) being arranged on a side of the limit projection (12) close to the elastic member (30), the elastic member (30) being abutted against the first vertical side (17).
3. The stop mechanism according to claim 1 or 2, characterized in that the lower bottom surface of the stop (20) is provided with a limit step (21), the guiding limit assembly further comprises a row seat (40), the row insert (10) is fixedly connected with the row seat (40), and a stop step (18) is formed between the row seat (40) at a connection position, and the stop step (18) can stop the limit step (21) so as to limit the movement of the stop (20) in the first direction.
4. A stop mechanism according to claim 3, characterized in that the seat (40) comprises a second guide channel (41), a first end face (42) and a second end face (43), the second guide channel (41) is through with the first guide channel (11), the stop (20) passes out of the second guide channel (41) into 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 face (42), the stop step (21) can stop on the first end face (42).
5. A stopper mechanism according to claim 1 or 2, wherein the stopper (20) is provided with a first mounting groove (22) on its upper surface, the limit projection (12) extends into the first mounting groove (22), the stopper (20) comprises a guide portion (23) and a forming portion (24), the guide 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.
6. A stop mechanism according to claim 5, characterized in that the molding portion (24) forms a molding surface on a side away from the first mounting groove (22), the molding surface being shaped as a combination of a polygon, an ellipse, a straight line and a curve or the molding surface being shaped to fit the molding surface of an injection-molded article.
7. The stop mechanism according to claim 1 or 2, wherein the driving assembly comprises a shovel base (50) and a diagonal guide post (60), one end of the diagonal guide post (60) close to the stop block (20) is installed in the shovel base (50), the guiding limiting assembly further comprises a row seat (40), the row insert (10) is fixedly connected with the row seat (40), the row seat (40) is provided with a diagonal guide hole (44), the diagonal guide post (60) is slidably arranged in the diagonal guide hole (44), and the driving assembly drives the row seat (40) to reciprocate along a first direction through the diagonal guide post (60).
8. The stop mechanism according to claim 7, further comprising a locking block (70), wherein the locking block (70) is disposed on a side of the shovel base (50) facing the stop (20), the locking block (70) has a first abutting portion (71) and a second abutting portion (72) disposed sequentially 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 oblique guide post (60).
9. The stop mechanism of claim 8, wherein the locking block (70) is removably mounted to the shovel base (50).
10. The stop mechanism according to claim 9, further comprising a locking block pressing plate (80), wherein the shovel base (50) further comprises a second mounting groove (51), a mounting hole (52) is formed in the bottom surface of the second mounting groove (51), the locking block (70) is arranged in the mounting hole (52), and the locking block pressing plate (80) is fixedly arranged in the second mounting groove (51) and compresses and fixes the locking block (70) in the mounting hole (52).
11. The stopper mechanism as claimed in claim 8, wherein the blade base (50) has a first stroke section and a second stroke section with respect to the slide base (40), the stopper (20) abutting the first abutment (71) when the blade base (50) is in the first stroke section, the stopper (20) remaining stationary, the stopper (20) abutting the second abutment (72) when the blade base (50) is in the second stroke section and reciprocating in a first direction with movement of the blade base (50).
12. The stop mechanism according to claim 1 or 2, characterized in that the slide insert (10) is internally provided with a cooling water channel (19), and the cooling water channel (19) is arranged at a distance from the first guide channel (11).
13. An injection mold comprising the stopper mechanism of any one of claims 1 to 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210439496.7A CN114734589B (en) | 2022-04-25 | 2022-04-25 | Stop block mechanism and injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210439496.7A CN114734589B (en) | 2022-04-25 | 2022-04-25 | Stop block mechanism and injection mold |
Publications (2)
| Publication Number | Publication Date |
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| CN114734589A CN114734589A (en) | 2022-07-12 |
| CN114734589B true CN114734589B (en) | 2023-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210439496.7A Active CN114734589B (en) | 2022-04-25 | 2022-04-25 | Stop block mechanism and injection mold |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0061072A2 (en) * | 1981-03-21 | 1982-09-29 | Maschinenfabrik Köppern GmbH. & Co. KG | Injection mould |
| DE10302248B3 (en) * | 2003-01-22 | 2004-06-24 | Merit Precision Tools Limited | Mold, for injection molding of thermosetting plastics components with cut-back sections, has a structured mold insert with a longitudinal sliding movement using parallel guides at the under side |
| CN104015317A (en) * | 2014-07-04 | 2014-09-03 | 苏州新协力特种工业模板有限公司 | Sliding thimble mechanism of injection mold system |
| CN206374149U (en) * | 2017-01-10 | 2017-08-04 | 上海小糸车灯有限公司 | A kind of pre- roof construction of sliding block |
| KR20210157109A (en) * | 2020-06-19 | 2021-12-28 | 미주정밀 주식회사 | Apparatus for ejecting undercut part and injection mold with the same |
-
2022
- 2022-04-25 CN CN202210439496.7A patent/CN114734589B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0061072A2 (en) * | 1981-03-21 | 1982-09-29 | Maschinenfabrik Köppern GmbH. & Co. KG | Injection mould |
| DE10302248B3 (en) * | 2003-01-22 | 2004-06-24 | Merit Precision Tools Limited | Mold, for injection molding of thermosetting plastics components with cut-back sections, has a structured mold insert with a longitudinal sliding movement using parallel guides at the under side |
| CN104015317A (en) * | 2014-07-04 | 2014-09-03 | 苏州新协力特种工业模板有限公司 | Sliding thimble mechanism of injection mold system |
| CN206374149U (en) * | 2017-01-10 | 2017-08-04 | 上海小糸车灯有限公司 | A kind of pre- roof construction of sliding block |
| KR20210157109A (en) * | 2020-06-19 | 2021-12-28 | 미주정밀 주식회사 | Apparatus for ejecting undercut part and injection mold with the same |
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| Publication number | Publication date |
|---|---|
| CN114734589A (en) | 2022-07-12 |
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