CN113500744B - Injection mold and injection molding method thereof - Google Patents

Injection mold and injection molding method thereof Download PDF

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Publication number
CN113500744B
CN113500744B CN202110954982.8A CN202110954982A CN113500744B CN 113500744 B CN113500744 B CN 113500744B CN 202110954982 A CN202110954982 A CN 202110954982A CN 113500744 B CN113500744 B CN 113500744B
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hardware
positioning
mold
injection
stopper
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CN113500744A (en
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赖维超
熊兵
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Shenzhen Everwin Precision Technology Co Ltd
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Shenzhen Everwin Precision Technology Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14065Positioning or centering articles in the mould
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/26Moulds
    • B29C45/2602Mould construction elements

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

The invention relates to an injection mold and an injection method thereof, wherein the injection mold comprises a front mold, a rear mold, a stop block, a rear mold core and a hardware positioning injection module, wherein the stop block, the rear mold core and the hardware positioning injection module are arranged between the front mold and the rear mold, the hardware positioning injection module comprises a line seat, a stop needle and a positioning needle which are arranged on the line seat and a line insert, the line seat is provided with an escape position, the size of the escape position, the distance between the stop needle and the stop block and the distance between the line seat and the stop block have correlation, when the line seat slides, the stop needle can only move by a corresponding distance due to the limitation of the stop block, and when the line seat continues to move, the stop needle can push the positioning needle to protrude out by a corresponding length, so that the pipe position of an annular hardware is lengthened, the condition that the annular hardware falls down due to too few pipe positions is avoided, and the condition that the injection mold is crushed is avoided.

Description

Injection mold and injection molding method thereof
Technical Field
The invention relates to the technical field of hardware injection molding, in particular to an injection mold which is suitable for hardware beer injection molding.
Background
The secondary injection molding is a special plastic molding process, and is also called beer sleeving or rubber coating. Specifically, the specific process flow of beer cover injection molding is as follows: the plastic raw material is molded in a primary plastic mold, then the molded part is taken out and put into a secondary molding mold to be injected with the same or another plastic material again for injection molding. However, in the existing injection molding process of ring-shaped hardware of sleeve beer, because the pipe positions of the ring-shaped hardware are less, the ring-shaped hardware is easy to fall off when sliding in a slide position, and the die is crushed.
Disclosure of Invention
Based on the above, the invention provides an injection mold, which is suitable for beer injection molding of hardware, can maintain the protruding state of a positioning needle when a travel seat moves, ensures that annular hardware can have a longer pipe position, and solves the problem that the annular hardware is easy to fall off in the existing beer injection molding process of annular hardware.
The utility model provides an injection mold, be applicable to hardware cover beer and mould plastics, including the front mould, with the back mould of front mould looks adaptation, set up in the front mould with dog, back mould benevolence and hardware location module of moulding plastics between the back mould, the hardware location module of moulding plastics sets up the dog with between the back mould benevolence to including the line position seat, set up in the line position seat keep off needle and pilot pin and line position mold insert, the line position seat have the base portion and by the assembly portion that the base portion extends the formation, assembly portion be provided with first assembly groove and link up in the second assembly groove of first assembly groove, the second assembly groove be close to in the one end of first assembly groove is provided with keeps away the vacancy, the line position mold insert be provided with the groove of wearing that the second assembly groove corresponds to in keep away from in one side of line position seat be provided with link up in the constant head tank of groove, the line position mold insert set up in back mould benevolence for assemble product hardware, wherein the butt of keeping off the needle thick end with the butt of first assembly groove with the line position seat is located the junction constant head tank is used for keeping away from the annular needle end constant head tank.
Optionally, the slide seat has a loading position and an injection position, when the slide seat is moved closer to the stopper by a distance exceeding a distance between the stopper pin and the stopper, the slide seat is switched to the loading position, and the stopper pin is stopped by the stopper to push the positioning pin to move away from the stopper, so as to form a state that the tip of the thin end of the positioning pin protrudes out of the slide insert, so that the ring-shaped hardware can be sleeved on the tip of the thin end of the positioning pin; when the slide seat moves to a position far away from the stop block to return, so that a mold core steel material of the product hardware assembled with the slide insert is abutted against the tail end of the thin end of the positioning needle, the slide seat is switched to the injection molding position;
wherein establish the line position seat with distance between the dog is L1, the thin end of fender needle with distance between the dog is L2, the length of keeping away the vacancy is L3, wherein L1 > L2, and L3 satisfies: l3= L1-L2, so that when the slide seat is moved to contact the stopper, the tip of the thin end of the positioning pin can be maintained in a state of abutting against the mold core steel material of the product hardware.
Optionally, a side surface of the assembly portion of the slide seat on the side where the first assembly groove is provided is an inclined surface, the injection mold further includes a shovel base for fixing the position of the slide seat, the shovel base is fixed to the front mold and has a connecting portion and a positioning portion extending from the connecting portion, and the positioning portion has a clearance groove adapted to the first assembly groove and an inclined surface adapted to the inclined surface.
Optionally, the hardware positioning injection molding module further comprises a slide pressing block arranged on two sides of the slide seat, a bottom wear-resistant block arranged at the bottom of the slide seat, and an inclined wear-resistant block fixedly attached to the inclined surface.
Optionally, the hardware positioning injection molding module further comprises a positioning block arranged in the first assembling groove, the positioning block is fixed on the position moving seat through a plurality of fixing pieces and is provided with a through hole suitable for the blocking needle to penetrate through.
Optionally, the hardware positioning injection molding module comprises two stop pins and two positioning pins, the slide seat is provided with two first assembling grooves and two second assembling grooves, and the slide insert is provided with two through grooves and two positioning grooves.
Optionally, the stopper is fixedly connected with the rear mold through a plurality of fixing posts and forms a state that a part of the stopper protrudes out of the rear mold, the rear mold is provided with a groove and a mold core groove penetrating through the groove, and the rear mold core is arranged in the mold core groove.
Optionally, the traveling seat is configured to be driven to move by any one of a driving device of an oil cylinder, an air cylinder and an inclined guide post.
Optionally, the injection mold further comprises an oil cylinder T block arranged at the bottom of the slide seat, the slide seat is driven by the oil cylinder via the oil cylinder T block, and the stopper is an oil cylinder stopper.
An injection molding method of an injection mold, comprising the steps of:
assembling product hardware on the slide insert;
driving the slide seat to move towards the direction close to the stop block;
when the distance that the slide seat is moved towards the direction close to the stop block exceeds the distance between the stop pin and the stop block, the stop pin is stopped by the stop block to push the positioning pin to move towards the direction far away from the stop block, so that the state that the tail end of the thin end of the positioning pin protrudes out of the slide insert is formed;
sleeving an annular hardware at the tail end of the thin end of the positioning pin;
driving the slide seat to move and return in a direction away from the stop block, so that the tail end of the thin end of the positioning needle is supported against the side surface of the die core steel material of the product hardware; and
and (4) combining the front die and the rear die, and carrying out beer-sleeving injection molding on the hardware of the product.
According to the invention, by arranging the vacancy avoiding positions on the running seat and arranging the size of the vacancy avoiding positions, the distance between the blocking needle and the stop block and the distance between the running seat and the stop block in a correlation manner, when the running seat slides and moves, the blocking needle can only move for a corresponding distance due to the limitation of the stop block, and when the running seat continues to move, the blocking needle can push the positioning needle to protrude for a corresponding length, so that the pipe position of the annular hardware is lengthened, on one hand, the annular hardware can be conveniently placed, and meanwhile, when the running seat returns, the tail end of the thin end of the positioning needle can be maintained in a state of abutting against the side surface of the die core steel material of the product hardware assembled on the running insert, so that the annular hardware is ensured to be fixed between the running insert and the side surface of the die core steel material of the product hardware, the condition that the annular hardware falls off due to too few pipe positions is avoided, and the condition that the injection mold is crushed due to pressure can also be avoided.
The injection mold is also provided with the shovel base, so that the position of the travel seat can be fixed in the mold closing process, the travel seat is prevented from moving due to impact force in the mold closing process, and the injection stability and the product yield of the injection mold are ensured.
Drawings
FIG. 1 is a perspective view of the injection mold according to a preferred embodiment of the present invention;
FIG. 2 is a partially exploded view of the injection mold shown in FIG. 1;
FIG. 3 is an exploded view of the injection mold shown in FIG. 1;
FIG. 4 is an exploded view of a portion of the structure of the injection mold shown in FIG. 1;
FIG. 5 is a top view of the injection mold shown in FIG. 1;
FIG. 6 isbase:Sub>A schematic cross-sectional view of the injection mold shown in FIG. 5 along axis A-A;
FIG. 7 is an enlarged schematic view of portion B of the injection mold shown in FIG. 6;
fig. 8 is an enlarged schematic view of a portion C of the injection mold shown in fig. 6.
The meaning of the reference symbols in the drawings is:
100-injection molding; 11-front mould; 12-back mould; 120-grooves; 121-cavity groove; 20-a stopper; 21-fixed columns; 30-rear mold core; 40-hardware positioning injection molding module; 41-a slide seat; 411-a base portion; 412-a mounting portion; 413-a first fitting groove; 414-a second mounting groove; 4140-avoidance of vacancy; 415-inclined plane; 42-stop needle; 43-a positioning pin; 44-slide insert; 440-through groove; 441-positioning grooves; 45-row position briquetting; 46-bottom wear block; 47-bevel wear block; 48-a positioning block; 49-a fixing member; 50-shovel base; 51-a connecting part; 52-a positioning section; 520-clearance groove; 521-a bevel; 60-oil cylinder T block; 201-ring hardware; 200-product hardware.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
As shown in fig. 1 to 5, a detailed structure of the injection mold 100 according to a preferred embodiment of the present invention is illustrated. Specifically, the injection mold 100 is suitable for injection molding of hardware in a sleeving manner, and includes a front mold 11, a rear mold 12 adapted to the front mold 11, a stopper 20, a rear mold core 30 and a hardware positioning injection module 40 disposed between the front mold 11 and the rear mold 12, where the hardware positioning injection module 40 is disposed between the stopper 20 and the rear mold core 30 and includes a needle guide 41, a needle guide 42 and a positioning needle 43 disposed on the needle guide 41, and a needle guide insert 44, the needle guide 41 has a base portion 411 and an assembling portion 412 formed by extending the base portion 411, the assembling portion 412 is provided with a first assembling groove 413 and a second assembling groove 414 penetrating through the first assembling groove 413, one end of the second assembling groove 414 close to the first assembling groove 413 is provided with a blank space 4140, the needle guide 44 is provided with a groove 440 corresponding to the second assembling groove 414, and a side far from the needle guide seat 41 is provided with a rough pin groove 441 penetrating through the needle guide 440, the needle guide insert 441 is disposed on the rear mold core 43, and the needle guide insert is used for abutting against the needle guide groove 201, and the needle guide insert 43 is used for guiding the needle guide groove 201;
wherein the plunger 41 has a loading position and an injection position, when the plunger 41 is moved closer to the stopper 20 by a distance exceeding the distance between the needle stop 42 and the stopper 20, the plunger 41 is switched to the loading position, the needle stop 42 is stopped by the stopper 20 to push the needle 43 to move away from the stopper 20, so as to form a state that the tip of the needle 43 protrudes from the tip of the plunger 44, so that the ring-shaped fitting 201 can be fitted on the tip of the needle 43; when the slide seat 41 moves back in a direction away from the stopper 20 so that the core steel material of the product hardware 200 assembled with the slide insert 44 abuts against the end of the thin end of the positioning pin 43, the slide seat 41 is switched to the injection position.
Specifically, as shown in fig. 6 to 8, a distance between the travel seat 41 and the stopper 20 is L1, a distance between the thin end of the stopper pin 42 and the stopper 20 is L2, a length of the escape space 4140 is L3, where L1 > L2, and L3 satisfies: l3= L1-L2, so that when the slide seat 41 is moved to contact the stopper 20, the tip of the thin end of the positioning pin 43 can be maintained in a state of abutting against the side surface of the mold core steel material of the product hardware 200.
It can be understood that, according to the present invention, by providing the empty avoiding portion 4140 on the running seat 41 and by relatively setting the size of the empty avoiding portion 4140, the distance between the needle block 42 and the stopper 20, and the distance between the running seat 41 and the stopper 20, when the running seat 41 moves slidably, the needle block 42 can only move a corresponding distance due to the restriction of the stopper 20, and when the running seat 41 continues to move, the needle block 42 can push the positioning needle 43 to protrude a corresponding length, so that the tube position of the ring hardware 201 is lengthened, on one hand, the placement of the ring hardware 201 can be facilitated, and at the same time, when the running seat 41 moves backward, the state that the tip end of the positioning needle 43 abuts against the side surface of the die steel of the product hardware 200 mounted on the running insert 44 can be maintained, so as to ensure that the ring hardware 201 is fixed between the running insert 44 and the side surface of the product hardware 200, thereby avoiding the occurrence of the die damage of the injection mold 100 due to the falling of the ring hardware.
It can be further understood that the moving range, i.e., the moving distance of the blocking pin 42 is determined by the length of the space 4140, and when the thick end of the blocking pin 42 moves to the end position of the space 4140, the thick end of the blocking pin 42 is limited by the inner wall of the assembling portion 412 and cannot move any further, so that the moving distance of the blocking pin 42 can be accurately controlled, the length of the positioning pin 43 protruding from the positioning groove 441 of the slide insert 44 can be controlled, and the state that the thin end of the positioning pin 43 abuts against the mold core steel side surface of the product hardware 200 can be accurately maintained.
It is worth mentioning that the side of the mold core steel material of the product hardware 200 is the side of the end of the product hardware 200 used for sealing glue.
It is also worth mentioning that the diameter of the blocking pin 42 is smaller than the diameter of the clearance 4140 to push out the positioning pin 43, and the diameter of the thick end of the positioning pin 43 is larger than the diameter of the second assembling groove 414 to limit the moving distance of the blocking pin 42 and the positioning pin 43.
In this embodiment of the present invention, the distance L1 between the travel seat 41 and the stopper 20 is 80mm, the distance L2 between the thin end of the needle 42 and the stopper 20 is 50mm, and the length L3 of the escape space 4140 is 30mm.
It can be understood that when the annular hardware of sleeve beer is moulded plastics, the pipe position of annular hardware is less, drops when the slide easily, causes the mould to crush, so need lengthen the pipe position of annular hardware, lets annular hardware pilot pin 43 extend 30mm.
In this embodiment of the present invention, since the positioning pin 43 and the travel seat 41 have the clearance 4140 of 30mm, when the travel seat 41 slides backward for 80mm, i.e. moves toward the block 20, the blocking pin 42 can only move 50mm due to the limitation of the block 20, so as to push the positioning pin 43 forward for 30mm, i.e. push the positioning pin 43 away from the block 20, and thus the effect of 30mm forward protrusion of the positioning pin 43 can be achieved.
It can be understood that the locating pin 43 is sleeved with the annular hardware 201 and is pushed out to extend out of 30mm, the locating pin 43 abuts against the side face of the mold core steel material of the product hardware 200, and then when the slide return of the slide seat 41 is performed again, the annular hardware 201 can be ensured to be fixed between the slide insert 44 and the side face of the mold core steel material of the product hardware 200, and the situation that the annular hardware 201 drops due to too few pipe positions is avoided.
In some embodiments of the present invention, the distance L1 between the travel seat 41 and the stop block 20 may also be 70mm, the distance L2 between the thin end of the stop pin 42 and the stop block 20 may also be 50mm, and the length L3 of the empty avoiding portion 4140 may also be 20mm, that is, the size of the empty avoiding portion 4140, the distance between the stop pin 42 and the stop block 20, and the distance between the travel seat 41 and the stop block 20 may correspond to different values according to the size of the hardware to be injection-molded by the injection mold 100, and only L1 > L2 and L3= L1-L2 need to be satisfied, and the present invention does not limit specific values of L1, L2, and L3.
In other words, the size of the injection mold 100 may be adjusted and set according to the size of the hardware to be injected by the injection mold 100, which is not limited by the invention.
Further, the side surface of the side of the assembling portion 412 of the slide seat 41, where the first assembling groove 413 is provided, is an inclined surface 415, the injection mold 100 further includes a shovel base 50 for fixing the position of the slide seat 41, the shovel base 50 is fixed to the front mold 11 and has a connecting portion 51 and a positioning portion 52 extending from the connecting portion 51, the connecting portion 51 is fixedly connected to the front mold 11, and the positioning portion 52 has a clearance groove 520 adapted to the first assembling groove 413 and an inclined surface 521 adapted to the inclined surface 415.
It is worth mentioning that, during the injection molding, when the front mold 11 and the rear mold 12 are clamped, an impact pressure may be generated on the slide base 41, which may easily cause the slide base 41 to move in a direction close to the stopper 20, thereby causing a defective product of the injection mold 100. Therefore, the injection mold 100 of the present invention is provided with the shovel base 50, and the shovel base 50 is used for fixing the position of the slide seat 41 in the mold closing process, so as to prevent the slide seat 41 from moving due to impact force in the mold closing process, thereby ensuring the stability of injection molding and the product yield of the injection mold 100.
In addition, it is worth mentioning that, because the size of different hardware fluctuates greatly, by adopting the way of the line insert 44, on one hand, the line insert 44 can play a role in positioning the hardware 200, and on the other hand, the line inserts 44 with different sizes can be adopted to adapt to the hardware with different sizes, so that the distance between the line seat 41 and the hardware 200 can be conveniently adjusted, and the injection requirement of the injection mold 100 can be met.
Further, the hardware positioning injection molding module 40 further includes a slide pressing block 45 disposed on two sides of the slide seat 41, a bottom wear-resistant block 46 disposed at the bottom of the slide seat 41, and an inclined wear-resistant block 47 fixedly attached to the inclined surface 415.
It can be understood that the slide pressing block 45 is used to fix the position of the slide seat 41, and since the slide seat 41 needs to slide for multiple times, the injection mold 100 is provided with the bottom wear-resisting block 46 and the inclined-surface wear-resisting block 47 to prevent the slide seat 41 from being stuck due to multiple movements, and in the practical application process, the wear-resisting block may be further coated with lubricating oil to prevent the slide seat 41 from being stuck.
Further, hardware location module 40 of moulding plastics still including set up in the locating piece 48 of first assembly groove 413, locating piece 48 is fixed in through a plurality of mountings 49 the position seat 41 is provided with and is suitable for the perforation that needle 42 passed, locating piece 48 is used for fixing needle 42's position is kept off.
It should be noted that the hardware positioning injection molding module 40 includes two stop pins 42 and two positioning pins 43, the slide seat 41 is provided with two first assembling grooves 413 and two second assembling grooves 414, and the slide insert 44 is provided with two through grooves 440 and two positioning grooves 441.
In addition, it is worth mentioning that the stopper 20 is fixedly connected with the rear mold 12 through a plurality of fixing posts 21 and forms a state that a part of the stopper protrudes out of the rear mold 12, the rear mold 12 has a groove 120 and a mold cavity groove 121 penetrating through the groove 120, and the rear mold cavity 30 is disposed in the mold cavity groove 121.
Alternatively, the traveling seat 41 is configured to be moved by any one of the driving devices of an oil cylinder, an air cylinder, and a diagonal guide post.
Specifically, the injection mold 100 further includes an oil cylinder T block 60 disposed at the bottom of the travel seat 41, the travel seat 41 is driven by the oil cylinder via the oil cylinder T block 60, and the stopper 20 is an oil cylinder stopper 20. That is, in the preferred embodiment of the present invention, the traveling seat 41 of the injection mold 100 is driven by a cylinder.
It is also understood that the present invention also provides in another aspect a method of injection molding of the injection mold 100, comprising the steps of:
fitting product hardware 200 on slide insert 44;
driving the slide holder 41 to move closer to the stopper 20;
when the distance that the travel seat 41 is moved in the direction close to the stopper 20 exceeds the distance between the stopper 42 and the stopper 20, the stopper 42 is stopped by the stopper 20 to push the positioning pin 43 to move away from the stopper 20, so that the tip of the thin end of the positioning pin 43 protrudes from the travel insert 44;
sleeving a ring-shaped hardware 201 at the tail end of the thin end of the positioning needle 43;
driving the slide seat 41 to move and return in a direction away from the stopper 20, so that the end of the thin end of the positioning needle 43 is supported against the side surface of the die core steel material of the product hardware 200; and
and (3) closing the front die 11 and the rear die 12, and performing beer-sleeving injection molding on the hardware product 200.
In summary, the injection mold 100 and the injection method suitable for injection molding of hardware double-shot are provided, by arranging the blank avoidance holes 4140 on the line seat 41 and arranging the size of the blank avoidance holes 4140, the distance between the stopper pins 42 and the stoppers 20, and the distance between the line seat 41 and the stoppers 20 in a correlated manner, when the line seat 41 moves slidably, the stopper pins 42 can only move by a corresponding distance due to the limitation of the stoppers 20, and when the line seat 41 continues to move, the stopper pins 42 can push the positioning pins 43 to protrude by a corresponding length, so that the pipe position of the ring-shaped hardware 201 is lengthened, on the one hand, the placement of the ring-shaped hardware 201 can be facilitated, and simultaneously, when the line seat 41 returns, the state that the tip ends of the positioning pins 43 abut against the side surface of the product hardware 200 assembled on the line insert 44 can be maintained, so as to ensure that the ring-shaped hardware 201 is fixed between the line seat 44 and the product insert 200, and the die core 201 is pressed, and the occurrence of the situation that the die core of the ring-shaped hardware 201 is damaged due to the injection mold can be avoided, and the phenomenon that the die core 201 is damaged due to the die core 201 can be avoided.
All possible combinations of the technical features in the above embodiments may not be described for the sake of brevity, but should be considered as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above examples only express preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. An injection mold is suitable for injection molding of hardware cover beer, and is characterized by comprising a front mold, a rear mold matched with the front mold, a stop block, a rear mold core and a hardware positioning injection module, wherein the stop block, the rear mold core and the hardware positioning injection module are arranged between the front mold and the rear mold core; wherein it is established the line seat with the distance between the dog is L1, the thin end of fender needle with the distance between the dog is L2, the length of keeping away the vacancy is L3, wherein L1 > L2, and L3 satisfies: l3= L1-L2, so that when the slide seat is moved to contact the stopper, the tip of the thin end of the positioning pin can be maintained in a state of abutting against the mold core steel material of the product hardware.
2. The injection mold according to claim 1, wherein the row seat has a loading position and an injection position, when the row seat is moved closer to the stopper by a distance exceeding a distance between the stopper pin and the stopper, the row seat is switched to the loading position, and the stopper pin is stopped by the stopper to push the retainer pin to move away from the stopper, thereby forming a state in which a tip end of the retainer pin protrudes from the row insert so that the ring-shaped hardware can be fitted over the tip end of the retainer pin; and when the slide seat moves to return in the direction far away from the stop block so that the mold core steel material of the hardware product assembled with the slide insert is abutted against the tail end of the thin end of the positioning needle, the slide seat is switched to the injection molding position.
3. An injection mold according to claim 1, wherein a side surface of the assembling portion of the slide seat on a side where the first assembling groove is provided is an inclined surface, the injection mold further comprises a shovel base for fixing the slide seat, the shovel base is fixed to the front mold and has a connecting portion and a positioning portion extending from the connecting portion, and the positioning portion has a clearance groove adapted to the first assembling groove and an inclined surface adapted to the inclined surface.
4. An injection mold as claimed in claim 3, wherein said hardware positioning injection module further comprises slide press blocks disposed on both sides of said slide base, bottom wear blocks disposed at the bottom of said slide base, and inclined wear blocks fixedly fitted to said inclined surfaces.
5. The injection mold of claim 3, wherein the hardware positioning injection molding module further comprises a positioning block arranged in the first assembling groove, the positioning block is fixed on the travel seat through a plurality of fixing pieces and is provided with a through hole suitable for the blocking needle to pass through.
6. An injection mold as claimed in any one of claims 1 to 5, wherein said hardware-positioning injection module comprises two said stop pins and two said positioning pins, said slide mount is provided with two said first assembly grooves and two said second assembly grooves, and said slide insert is provided with two said pass-through grooves and two said positioning grooves.
7. The injection mold of any one of claims 1 to 5, wherein the stopper is fixedly connected with the rear mold through a plurality of fixing posts and forms a state that a part of the stopper protrudes out of the rear mold, the rear mold has a groove and a mold core groove penetrating through the groove, and the rear mold core is disposed in the mold core groove.
8. An injection mould according to any one of claims 1 to 5, characterized in that the travelling block is arranged to be moved by any one of the drives of a cylinder, a gas cylinder, an angle beam.
9. An injection mold according to claim 8, further comprising a cylinder T-block disposed at a bottom of the slide seat, wherein the slide seat is driven by a cylinder via the cylinder T-block, and the stopper is a cylinder stopper.
10. A method of injection molding of an injection mold according to any one of claims 1-9, comprising the steps of:
assembling product hardware on the slide insert;
driving the slide seat to move towards the direction close to the stop block;
when the distance that the slide seat is moved towards the direction close to the stop block exceeds the distance between the stop pin and the stop block, the stop pin is stopped by the stop block to push the positioning pin to move towards the direction far away from the stop block, so that the state that the tail end of the thin end of the positioning pin protrudes out of the slide insert is formed;
sleeving an annular hardware at the tail end of the thin end of the positioning pin;
driving the slide seat to move and return in a direction away from the stop block, so that the tail end of the thin end of the positioning needle is propped against the side surface of the die core steel material of the product hardware; and
and (4) combining the front die and the rear die, and carrying out beer-sleeving injection molding on the hardware of the product.
CN202110954982.8A 2021-08-19 2021-08-19 Injection mold and injection molding method thereof Active CN113500744B (en)

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CN210047017U (en) * 2019-12-30 2020-02-11 慈溪市盛艺模具有限公司 Injection mold with back-off slide mechanism
CN111186074A (en) * 2020-01-13 2020-05-22 宁波方正汽车模具股份有限公司 Positioning mechanism of injection mold for automotive composite interior trim part
KR102256843B1 (en) * 2020-09-09 2021-05-27 주식회사 메인텍 Sliding structure of two colour molding injection mold

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6238202B1 (en) * 1999-02-26 2001-05-29 Unique Mould Makers Limited Apparatus for ejecting threaded injection molded parts
JP2001096590A (en) * 1999-09-28 2001-04-10 Oiles Ind Co Ltd Slide core guide unit
CN203282673U (en) * 2013-06-07 2013-11-13 深圳市畅盛精密模具有限公司 Manual operation slide structure and injection die
CN207345009U (en) * 2017-08-15 2018-05-11 东莞秦汉汽车模具技术有限公司 A kind of anti-stick Slide mechanism of car panel spectacle case injection mold
CN109177093A (en) * 2018-11-01 2019-01-11 中山联合光电科技股份有限公司 A kind of injection mold structure with thimble
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CN209717381U (en) * 2019-01-24 2019-12-03 东莞市广正模具塑胶有限公司 One kind being used for mold slide insert backhoe processing jig
CN210047006U (en) * 2019-12-30 2020-02-11 慈溪市盛艺模具有限公司 Injection mold with slide internal back-off linkage demolding structure
CN210047017U (en) * 2019-12-30 2020-02-11 慈溪市盛艺模具有限公司 Injection mold with back-off slide mechanism
CN111186074A (en) * 2020-01-13 2020-05-22 宁波方正汽车模具股份有限公司 Positioning mechanism of injection mold for automotive composite interior trim part
KR102256843B1 (en) * 2020-09-09 2021-05-27 주식회사 메인텍 Sliding structure of two colour molding injection mold

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