CN111531815A - Slider structure and injection mold convenient to two back-off injection moulding product drawing of patterns - Google Patents
Slider structure and injection mold convenient to two back-off injection moulding product drawing of patterns Download PDFInfo
- Publication number
- CN111531815A CN111531815A CN202010516928.0A CN202010516928A CN111531815A CN 111531815 A CN111531815 A CN 111531815A CN 202010516928 A CN202010516928 A CN 202010516928A CN 111531815 A CN111531815 A CN 111531815A
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- Prior art keywords
- sliding block
- slider
- base
- trapezoidal
- wear
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Classifications
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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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- 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
- B29C45/40—Removing or ejecting moulded articles
- B29C45/44—Removing or ejecting moulded articles for undercut articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/58—Upholstery or cushions, e.g. vehicle upholstery or interior padding
Abstract
The invention discloses a sliding block structure convenient for demoulding of a double-reverse-buckled injection molding product, which is characterized in that: the sliding block structure is arranged on a rear die of the injection mold, and a rear die core is fixed on the rear die through a bolt; the sliding block structure comprises an outer sliding block, a middle sliding block, an inner sliding block and a sliding block base, wherein the sliding block base is fixedly connected with the outer sliding block through a bolt, the inner sliding block is connected with the middle sliding block in a sliding mode, and the middle sliding block is connected with the outer sliding block through a bolt; when the die is closed, the inner slide block is positioned above the slide block base, and an injection molding cavity is formed among the slide block base, the inner slide block and the rear die core; the middle sliding block is provided with a plurality of grooves, and the lower end of the shovel base is embedded into the grooves. The injection mold with the sliding block structure is used for producing double-inverted-buckle injection products, direct mold stripping can be achieved, the quality of the mold stripping products is guaranteed, and the performance of the products cannot be influenced in the mold stripping process.
Description
Technical Field
The invention relates to a sliding block structure convenient for demoulding of a double-reverse-buckled injection molding product and an injection mold, and belongs to the technical field of injection molding.
Background
In the research and development of automotive plastic interior parts, in order to meet the assembly requirements, the functional structure of an injection molding product has the requirements of strength and stability, and then the injection molding product with a double-reverse-buckling structure is developed. However, the existing injection mold cannot smoothly release an injection product with a double-inverted structure, so that automobile interior trim part manufacturers have to give up the product with the double-inverted structure and select a single-inverted structure, thereby limiting the performance improvement and further research and development of certain automobile plastic interior trim parts; or the ejector pin plate is adopted to demold forcibly, so that the product is easily damaged, the product is deformed in serious conditions, the product quality is reduced, and the performance of the plastic interior trim part is influenced.
Disclosure of Invention
The purpose is as follows: in order to solve the problem that a product with a double-reverse-buckling structure is difficult to demold in the prior art, the invention provides a sliding block structure and an injection mold, which are convenient for demolding a double-reverse-buckling injection molding product.
The technical scheme is as follows: in order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a slider structure convenient for demoulding of a double-undercut injection molding product is arranged on a rear die of an injection mold, and a rear die core is fixed on the rear die through a bolt;
the sliding block structure comprises an outer sliding block, a middle sliding block, an inner sliding block and a sliding block base, wherein the sliding block base is fixedly connected with the outer sliding block through a bolt, the inner sliding block is connected with the middle sliding block in a sliding mode, and the middle sliding block is connected with the outer sliding block through a bolt; when the die is closed, the inner slide block is positioned above the slide block base, and an injection molding cavity is formed among the slide block base, the inner slide block and the rear die core;
the middle sliding block is provided with a plurality of grooves, and the lower end of the shovel base is embedded into the grooves.
Further, a plurality of trapezoidal piece of side fixed connection of interior slider, the side of well slider is equipped with a plurality of dovetail groove, the side that the dovetail groove belongs to is relative with trapezoidal piece place side, and the position one-to-one of trapezoidal groove and trapezoidal piece, the trapezoidal piece embedding trapezoidal inslot of corresponding position.
Further, the vertical length of the trapezoidal groove is larger than that of the trapezoidal block, and the width of the trapezoidal groove is equal to that of the trapezoidal block.
Furthermore, a plurality of wear-resisting plates are arranged on one side face, in vertical contact with the inner sliding block, of the sliding block base, the lower surfaces of the wear-resisting plates are embedded into the sliding block base, and the upper surfaces of the wear-resisting plates are 1mm higher than the sliding block base.
A plurality of wear-resisting plates are arranged on one side face, in vertical contact with the middle sliding block, of the outer sliding block, the lower surfaces of the wear-resisting plates are embedded into the outer sliding block, and the upper surfaces of the wear-resisting plates are 1mm higher than the outer sliding block.
Furthermore, a guide block is fixed on the rear die core, and two ends of the inner sliding block are in tangential contact with the guide block.
Furthermore, an inclined guide post is inserted into the outer sliding block in a penetrating mode, the lower end of the inclined guide post extends into the movable die, and the inclined guide post can slide in the rear die.
An injection mold comprises a front mold and a rear mold, wherein the rear mold is provided with the slide block structure.
Has the advantages that: the invention provides a slider structure convenient for demoulding of a double-inverted-buckle injection product, which consists of an outer slider, a middle slider, an inner slider and a slider base, wherein after the product is subjected to injection moulding, a front die and a rear die are opened, the outer slider drives the slider base to firstly slide out to one side far away from the product, so that the problem of demoulding of a first inverted buckle is solved; then along with well slider drives interior slider and to outside slip, interior slider is kept away from the product, solves the second back-off drawing of patterns problem. The injection mold with the sliding block structure is used for producing double-inverted-buckle injection products, direct mold stripping can be achieved, the quality of the mold stripping products is guaranteed, and the performance of the products cannot be influenced in the mold stripping process.
Drawings
FIG. 1 is a schematic view of a rear mold assembly of the injection mold of the present invention;
FIG. 2 is a schematic view of the assembly of the slider structure of the present invention;
FIG. 3 is a schematic view of the inner slide of the present invention;
FIG. 4 is a schematic top view of the slider structure of the present invention;
FIG. 5 is a schematic sectional view taken along the direction D-D in FIG. 4;
fig. 6 is an enlarged view of a portion a of fig. 5.
The labels in the figure are: 1. the novel plastic injection molding machine comprises a rear die, 2 parts of a rear die core, 3 parts of an outer sliding block, 4 parts of a middle sliding block, 41 parts of a trapezoidal groove, 5 parts of an inner sliding block, 51 parts of a trapezoidal block, 6 parts of a sliding block base, 7 parts of a shovel base, 8 parts of an abrasion-resistant plate, 9 parts of a guide block, 10 parts of an inclined guide post, 11 parts of a pressing bar, 12 parts of an injection molding product and 121 parts of an inverted buckle rib position.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
The utility model provides a slider structure convenient to two back-off injection moulding product drawing of patterns, slider structure sets up on injection mold's back mould 1, has back mould benevolence 2 through the bolt fastening on the back mould 1.
As shown in fig. 1 to 5, the slider structure includes an outer slider 3, a middle slider 4, an inner slider 5 and a slider base 6, the slider base 6 is fixedly connected with the outer slider 3 through a bolt, the inner slider 5 is slidably connected with the middle slider 4, and the middle slider 4 is connected with the outer slider 3 through a bolt; when the mold is closed, the inner slide block 5 is positioned above the slide block base 6, and an injection molding cavity is formed among the slide block base 6, the inner slide block 5 and the movable mold core 2, as shown in fig. 5 and 6, an injection molding product 12 is formed, and the injection molding product 12 is provided with an inverted buckle rib position 121.
The middle sliding block 4 is provided with a plurality of grooves, the lower end of the shovel base 7 is embedded into the grooves, and the upper end of the shovel base 7 is fixed on a front die of an injection mold through bolts; in a die assembly state, the slide block structure is limited by the shovel base 7; when the mold is opened, the shovel base 7 moves upwards along with the front mold in the vertical direction, and the shovel base 7 gradually slides out of the middle slide block 4.
As shown in fig. 3, the side surface of the inner slide block 5 is fixedly connected with a plurality of trapezoidal blocks 51 through bolts, the side surface of the middle slide block 4 is provided with a plurality of trapezoidal grooves 41, the side surface where the trapezoidal grooves 41 are located is opposite to the side surface where the trapezoidal blocks 51 are located, the positions of the trapezoidal grooves 41 and the positions of the trapezoidal blocks 51 are in one-to-one correspondence, and the trapezoidal blocks 51 at the corresponding positions are embedded into the trapezoidal grooves 41; the vertical length of the trapezoidal groove 41 is greater than that of the trapezoidal block 51, and the width of the trapezoidal groove 41 is equal to that of the trapezoidal block 51, so that the trapezoidal block 51 can only slide up and down along the trapezoidal groove 41 and cannot shake left and right.
The bolt head of connecting outer slider 3 and well slider 4 keeps away a distance x, and slider 4's length equals in this distance x and the embedding of shovel base 7, makes outer slider 3 and well slider 4 incomplete lock die, just drives well slider 4 outside slip after the outside roll-off certain distance y of outer slider 3, keeps away from injection moulding product 12.
A plurality of wear plates A8 are arranged on one side face of the sliding block base 6, which is in vertical contact with the inner sliding block 5, the lower surface of the wear plate A8 is embedded into the sliding block base 6, and the upper surface of the wear plate A8 is 1mm higher than the surface of the sliding block base 6. A plurality of wear plates B8 are arranged on one side face of the outer sliding block 3, which is in vertical contact with the middle sliding block 4, the lower surface of the wear plate B8 is embedded into the outer sliding block 3, and the upper surface of the wear plate B8 is 1mm higher than the surface of the outer sliding block 3.
Installation of a wear-resistant plate: grooves are respectively arranged on the contact surface of the sliding block base and the inner sliding block in vertical contact, and the contact surface of the outer sliding block and the middle sliding block in vertical contact, the size of each groove is slightly larger than that of the wear-resistant plate, and then the wear-resistant plate is locked in the groove by bolts. The mould constantly opens the mould compound die, sliding friction need constantly take place between slider base and interior slider, outer slider and the well slider, sets up removable antifriction plate can prolong the slider life-span.
And a guide block 9 is fixed on the rear die core 2, and two ends of the inner slide block 5 are in tangential contact with the guide block 9.
An inclined guide post 10 is inserted into the outer sliding block 3 in a penetrating mode, the lower end of the inclined guide post 10 extends into the rear die 1, and the inclined guide post 10 can slide in the rear die 1.
The rear die 1 is fixed with a pressing strip 11 through a bolt, and the pressing strip 11 can press the sliding block structure, so that the vertical movement of the sliding block structure is limited, and the sliding block structure can only move horizontally.
An injection mold comprises a front mold and a rear mold, wherein the rear mold is provided with the slide block structure.
The motion principle and the process of the sliding structure are as follows:
when the front and rear molds of the mold are opened, the inclined guide post 10 drives the outer slide block 3 to slide towards one side far away from the injection product 12, and the outer slide block 3 drives the slide block base 6 to be discharged, so that the problem of rib demoulding at the lower half part of the injection product is solved; the middle sliding block 4 is limited by the shovel base 7 at first, and after the shovel base 7 completely slides out of the middle sliding block 4, the middle sliding block 4 moves outwards under the driving of the outer sliding block 3; because 6 outwards withdraw from of slider base, interior slider 5 below has not supported, interior slider 5 slowly slips off with trapezoidal piece 51, and wherein interior slider 5 both ends are along guide block 9, trapezoidal piece 51 along the slowly landing of dovetail groove 41, and when trapezoidal piece 51 landing to the bottom of dovetail groove 41, well slider 4 continues to move to the outside, drags interior slider 5 and slides to the outside together, solves the first half back-off rib position 121 drawing of patterns problem of injection moulding product.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (8)
1. The utility model provides a slider structure convenient to two back-off injection moulding product drawing of patterns which characterized in that: the sliding block structure is arranged on a rear die of the injection mold, and a rear die core is fixed on the rear die through a bolt;
the sliding block structure comprises an outer sliding block, a middle sliding block, an inner sliding block and a sliding block base, wherein the sliding block base is fixedly connected with the outer sliding block through a bolt, the inner sliding block is connected with the middle sliding block in a sliding mode, and the middle sliding block is connected with the outer sliding block through a bolt; when the die is closed, the inner slide block is positioned above the slide block base, and an injection molding cavity is formed among the slide block base, the inner slide block and the rear die core;
the middle sliding block is provided with a plurality of grooves, and the lower end of the shovel base is embedded into the grooves.
2. The slider structure for facilitating the demolding of a double-undercut injection molded product of claim 1, wherein: the side fixed connection a plurality of trapezoidal piece of interior slider, the side of well slider is equipped with a plurality of dovetail groove, dovetail groove place side is relative with trapezoidal piece place side, and the position one-to-one of trapezoidal groove and trapezoidal piece, and the trapezoidal piece embedding trapezoidal inslot of corresponding position.
3. The slider structure for facilitating the demolding of a double-undercut injection molded product of claim 2, wherein: the vertical length of trapezoidal groove is greater than the vertical length of trapezoidal piece, and the width in trapezoidal groove equals with the width of trapezoidal piece.
4. The slider structure for facilitating the demolding of a double-undercut injection molded product of claim 1, wherein: a side of the sliding block base in vertical contact with the inner sliding block is provided with a plurality of wear-resisting plates, the lower surfaces of the wear-resisting plates are embedded into the sliding block base, and the upper surfaces of the wear-resisting plates are 1mm higher than the sliding block base.
5. The slider structure for facilitating the demolding of a double-undercut injection molded product of claim 1, wherein: a plurality of wear-resisting plates are arranged on one side face, in vertical contact with the middle sliding block, of the outer sliding block, the lower surfaces of the wear-resisting plates are embedded into the outer sliding block, and the upper surfaces of the wear-resisting plates are 1mm higher than the outer sliding block.
6. The slider structure for facilitating the demolding of a double-undercut injection molded product of claim 1, wherein: and a guide block is fixed on the rear die core, and two ends of the inner sliding block are in tangential contact with the guide block.
7. The slider structure for facilitating the demolding of a double-undercut injection molded product of claim 1, wherein: an inclined guide post is inserted into the outer sliding block in a penetrating mode, the lower end of the inclined guide post extends into the movable die, and the inclined guide post can slide in the rear die.
8. The utility model provides an injection mold, includes front mould and back mould, its characterized in that: the rear mold is provided with a slider structure as set forth in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010516928.0A CN111531815A (en) | 2020-06-09 | 2020-06-09 | Slider structure and injection mold convenient to two back-off injection moulding product drawing of patterns |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010516928.0A CN111531815A (en) | 2020-06-09 | 2020-06-09 | Slider structure and injection mold convenient to two back-off injection moulding product drawing of patterns |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111531815A true CN111531815A (en) | 2020-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010516928.0A Pending CN111531815A (en) | 2020-06-09 | 2020-06-09 | Slider structure and injection mold convenient to two back-off injection moulding product drawing of patterns |
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| CN (1) | CN111531815A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112109285A (en) * | 2020-10-10 | 2020-12-22 | 凯勒(南京)新材料科技有限公司 | Demoulding structure based on inside back-off of injection molding |
-
2020
- 2020-06-09 CN CN202010516928.0A patent/CN111531815A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112109285A (en) * | 2020-10-10 | 2020-12-22 | 凯勒(南京)新材料科技有限公司 | Demoulding structure based on inside back-off of injection molding |
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