CN111688130A - Sliding block structure of injection mold - Google Patents
Sliding block structure of injection mold Download PDFInfo
- Publication number
- CN111688130A CN111688130A CN202010413094.0A CN202010413094A CN111688130A CN 111688130 A CN111688130 A CN 111688130A CN 202010413094 A CN202010413094 A CN 202010413094A CN 111688130 A CN111688130 A CN 111688130A
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- China
- Prior art keywords
- hole
- inclined hole
- sliding block
- mold
- slide block
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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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention provides a sliding block structure of an injection mold, and relates to a demoulding structure of a sliding block. It has solved the problem that the injection molding that has the hole site is difficult to the drawing of patterns among the prior art. This injection mold's slider structure is provided with interior slider and outer slider on the injection mold, the outer die cavity face that constitutes the die cavity has on the outer slider, interior slider has the bending segment, the outer die cavity face relative with the outer die cavity face of outer slider has on the bending segment, the outer die cavity face constitutes the local die cavity of injection molding with the inner die cavity face relatively, be provided with the slide opening on the outer slider, the gliding cooperation of interior slider is in the slide opening, be provided with on the outer slider and push up the hole that link up with the slide opening. In order to simplify the structure of the mold and enable the product to be smoothly demolded, the integral forming structure of the inner slide block and the outer slide block controls the relative distance between the inner slide block and the outer slide block through the insertion and the moving-out of the push rod, so that the injection molding or demolding is conveniently realized, and the integral forming structure is suitable for molding and demolding at the hole site of an injection molding part.
Description
Technical Field
The invention belongs to the technical field of molds, and relates to a sliding block structure on an injection mold.
Background
Some injection molded products usually have holes in the side walls, so that the mold is required to be ejected from both sides, but some products usually have ribs near the holes, as shown in fig. 1.
According to traditional mould design, the interior outer hole can design solitary demolding structure respectively, and outside hole design slider demolding, the structure demolding of oblique top or straight top pressure oblique top is then designed to the inside hole.
But if adopt the oblique top structure, when the mould was ejecting, the oblique top can break the muscle position, causes the product unqualified, and the straight top pushes up the oblique top structure and can make the mould structure complicated, need use secondary ejecting just can get the piece to because of product hole site and top surface highly not enough can cause this structural strength not enough, unable volume production.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a sliding block structure of an injection mold, which is suitable for demolding at a product hole position.
The purpose of the invention can be realized by the following technical scheme: a sliding block structure of an injection mould is provided with an inner sliding block and an outer sliding block, the outer sliding block is provided with an outer cavity surface forming a mould cavity, the inner slide block is provided with a bending section, the bending section is provided with an inner cavity surface opposite to the outer cavity surface of the outer slide block, the outer cavity surface and the inner cavity surface form a local cavity of the injection molding part, the outer slide block is provided with a slide hole, the inner slide block is matched in the slide hole in a sliding way, the outer slide block is provided with a pushing hole communicated with the slide hole, a first pushing rod is movably matched in the pushing hole, the inner slide block is provided with a first inclined hole in which the end part of the first pushing rod can be inserted, the end part of the first pushing rod is provided with an inclined bending head matched with the inclined hole, so that when the first pushing rod extends towards the first inclined hole, the inner cavity surface of the inner sliding block is close to the injection molding piece, and when the first ejector rod moves out of the first inclined hole, the inner cavity surface of the inner sliding block is far away from the injection molding piece; the outer slide block is provided with a second inclined hole, and a second ejector rod is arranged corresponding to the second inclined hole, so that when the second ejector rod extends into the second inclined hole, the outer cavity surface of the outer slide block is close to the injection molding part, and when the second ejector rod moves out of the second inclined hole, the inner cavity surface of the inner slide block is far away from the injection molding part.
In some embodiments, the first inclined holes are inclined from top to bottom toward the inside of the mold, and the second inclined holes are inclined from top to bottom toward the outside of the mold.
In some embodiments, the pushing hole has a width ensuring that the pushing hole is always communicated with the first inclined hole in the range of relative movement of the inner slide block and the outer slide block.
In some embodiments, a first return spring acts between the end of the inner slide and the slide hole to ensure that the inner slide is away from the injection molded part when the first ejector pin is away from the first inclined hole.
In some embodiments, a second return spring is arranged between the outer slide block and the mold, and the outer slide block is ensured to be away from the injection molding piece when the second ejector rod is away from the second inclined hole.
In some embodiments, the lower die holder is provided with a first limiting portion for limiting the inner slide block corresponding to the first return spring, so that after the first ejector rod leaves the first inclined hole, the end portion of the first ejector rod corresponds to the first inclined hole, and a second limiting portion for limiting the outer slide block corresponding to the first return spring is provided, so that after the second ejector rod leaves the second inclined hole, the end portion of the second ejector rod corresponds to the second inclined hole.
In some embodiments, the inner slide block and the outer slide block are slidably disposed on the lower die base, the first ejector rod and the second ejector rod are disposed on the upper die base, and after the upper die base and the lower die base are assembled, the first ejector rod and the second ejector rod form a complete injection mold cavity by the cavity surfaces on the inner slide block and the outer slide block and the other cavity surfaces on the die base.
In some embodiments, the cavity formed by the cavity surfaces of the outer slide and the inner slide is the cavity at the hole position of the injection molded part.
In some embodiments, the second inclined holes are two on two sides of the first inclined hole respectively.
Compared with the prior art, the sliding block structure of the injection mold has the following advantages:
in order to simplify the structure of the mold and enable the product to be smoothly demolded, the integral forming structure of the inner slide block and the outer slide block controls the relative distance between the inner slide block and the outer slide block through the insertion and the moving-out of the push rod, thereby conveniently realizing injection molding or demolding, being suitable for molding and demolding at the hole site of an injection molding piece, having no influence on other structures of the injection molding piece, being capable of synchronously working with the demolding of a molding machine of an upper mold base and a lower mold base, having simple structure, convenient operation and low cost, greatly improving the production efficiency and ensuring the product.
Drawings
In the drawings, which are not necessarily drawn to scale, like reference numerals may describe similar components in different views. Like reference numerals having different letter suffixes may represent different examples of similar components. The drawings illustrate generally, by way of example, but not by way of limitation, various embodiments discussed herein.
FIG. 1 is a schematic view of an injection molded part;
FIG. 2 is a cross-sectional view AA in FIG. 1;
FIG. 3 is a hole site mold structure with a lifter cooperating with a slider in the prior art;
FIG. 4 is a schematic diagram of a hole site mold structure composed of a straight top, an inclined top and a slide block in the prior art;
FIG. 5 is a schematic view of the die principle of the present invention with inner and outer slides engaged with the hole sites;
FIG. 6 is a schematic view showing a state where the mold is closed;
FIG. 7 is an enlarged schematic view at A of FIG. 6;
FIG. 8 is a schematic view of the upper die base removed;
FIG. 9 is an enlarged schematic view at C of FIG. 8;
FIG. 10 is a schematic axial view of the inner and outer slides in engagement with the injection molded part;
FIG. 11 is a top view of FIG. 10;
FIG. 12 is a schematic cross-sectional AA view of FIG. 11;
fig. 13 is a schematic view of BB cross section of fig. 11.
In the figure, an inner slide block 1, a bending section 1-1, a first inclined hole 1-2, an outer slide block 2, a slide hole 2-1, a pushing hole 2-2, a second inclined hole 2-3, a lower die holder 3, an upper die holder 4, an injection molding 5, an injection molding hole site 5-1, a rib 5-2, a first push rod 6, an inclined bending head 6-1, a second push rod 7, a first reset spring 8, a first limit part 9, a second reset spring 10, a second limit part 11, a limit guide rail 12, a middle inclined top 13, a slide block 14, a straight top 15 and an inclined top 16.
Detailed Description
The following are specific examples of the present invention, and the technical solutions of the present invention are further described with reference to the drawings, but the present invention is not limited to these examples, and the following embodiments do not limit the invention according to the claims. Moreover, all combinations of features described in the embodiments are not necessarily essential to the solution of the invention.
It will be understood by those of ordinary skill in the art that all directional references (e.g., above, below, upward, downward, top, bottom, left, right, vertical, horizontal, etc.) are illustratively used in the figures to aid the reader's understanding and do not imply (e.g., position, orientation, or use, etc.) a limitation on the scope of the invention, which is defined by the claims appended hereto. Additionally, the term "substantially" may refer to slight imprecision or deviation in conditions, amounts, values, or dimensions, etc., some of which may be within manufacturing or tolerance limits.
Examples
As shown in figures 1 and 2, the injection molded part of the present embodiment is a shell, the edge of the shell has a hole, and the top of the inner side of the injection molded part is provided with a rib 5-2.
Fig. 3 shows a hole site mold structure of the prior art in which the lifter 13 is engaged with the slider 14.
Fig. 4 shows a hole site mold structure formed by the straight top 15, the slanted top 16 and the slider 14 in the prior art.
The injection mold is provided with an inner slide block 1 and an outer slide block 2, the injection mold mainly comprises a lower die holder 3 and an upper die holder 4 capable of moving up and down, the outer slide block is provided with an outer die cavity surface forming a die cavity, the inner slide block is provided with a bending section 1-1 extending into the inner side of an injection molding piece 5 upwards, the bending section is provided with an inner die cavity surface opposite to the outer die cavity surface of the outer slide block, the outer die cavity surface and the inner die cavity surface are opposite to form a local die cavity of the injection molding piece, and the die cavity formed by the die cavity surfaces of the outer slide block and the inner slide block is a die cavity at the position of a hole 5-1 of the injection molding piece.
The outer sliding block is arranged on the lower die base in a sliding mode, sliding limiting guide rails 12 are arranged on the lower die base and located on two sides of the outer sliding block, a sliding hole 2-1 is formed in the outer sliding block, the inner sliding block is matched in the sliding hole in a sliding mode, a pushing hole 2-2 which is communicated with the sliding hole and is in the vertical direction is formed in the outer sliding block, a first pushing rod 6 is movably matched in the pushing hole, a first inclined hole 1-2 into which the end portion of the first pushing rod can be inserted is formed in the inner sliding block, an inclined bending head 6-1 matched with the inclined hole is arranged at the end portion of the first pushing rod, and the first inclined hole inclines towards the inner side of the die from top to bottom; and a second inclined hole 2-3 is formed in the outer sliding block, the second inclined hole inclines towards the outer side of the mould from top to bottom, and a second ejector rod 7 is arranged corresponding to the second inclined hole. The first ejector rod and the second ejector rod are arranged on the upper die base, the first ejector rod on the upper portion of the inclined bending head is arranged in a vertical state, and the second ejector rod inclines towards the opposite direction.
The sliding of the sliding block can be driven by controlling the push rod to be inserted into and removed from the inclined hole through the upper die base, and the method comprises the following steps: when the first ejector rod extends into the first inclined hole, the inner cavity surface of the inner sliding block is close to the injection molding part, and when the first ejector rod moves out of the first inclined hole, the inner cavity surface of the inner sliding block is far away from the injection molding part; and a first return spring 8 is acted between the end part of the inner sliding block and the sliding hole, and when the first ejector rod leaves the first inclined hole, the first return spring enables the inner sliding block to leave the injection molding part.
The lower die holder is provided with a first limiting part 9 which is corresponding to the first reset spring and used for limiting the inner slide block, so that after the first ejector rod leaves the first inclined hole, the end part of the first ejector rod corresponds to the first inclined hole, the slide way of the inner slide block is arranged on the lower die holder, and the end part of the slide way is used as the limiting part of the inner slide block.
When the second ejector rod extends into the second inclined hole, the outer cavity surface of the outer sliding block is close to the injection molding part, and when the second ejector rod moves out of the second inclined hole, the inner cavity surface of the inner sliding block is far away from the injection molding part.
And a second return spring 10 is arranged between the outer sliding block and the mould, and when the second ejector pin leaves the second inclined hole, the second return spring enables the outer sliding block to leave the injection molding part. The first and second return springs are both arranged in spring positioning holes on the outer sliding block.
And a second limiting part 11 for limiting the outer slide block is arranged corresponding to the first return spring, so that the end part of the second ejector rod is ensured to correspond to the second inclined hole after the second ejector rod leaves the second inclined hole. The second limiting part 11 is fixed on the lower die holder.
The width of first inclined hole UNICOM should guarantee, including slider and outer slider relative movement's within range, the top pushes up the hole and all the time with first inclined hole UNICOM, guarantees that the tip of first push rod is interior cooperation all the time in its hole to guarantee that first push rod is to first inclined hole effect.
After the upper die base and the lower die base are assembled, the first ejector rod and the second ejector rod push the sliding block to overcome the elasticity of the return spring so as to enable the die cavity surfaces on the inner sliding block and the outer sliding block and other die cavity surfaces on the die base to form a complete injection die cavity. After injection molding is completed, the push rod is moved upwards by the upper die base, the slide block is automatically opened towards two sides under the action of the reset spring, and demolding is realized.
Although some terms are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention. The order of execution of the operations, steps, and the like in the apparatuses and methods shown in the specification and drawings may be implemented in any order as long as the output of the preceding process is not used in the subsequent process, unless otherwise specified. The descriptions using "first", "next", etc. for convenience of description do not imply that they must be performed in this order.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (9)
1. A sliding block structure of an injection mold is characterized in that an inner sliding block and an outer sliding block are arranged on the injection mold, an outer mold cavity surface forming a mold cavity is arranged on the outer sliding block, the inner sliding block is provided with a bending section, an inner mold cavity surface opposite to the outer mold cavity surface of the outer sliding block is arranged on the bending section, a local mold cavity of an injection molding piece is formed by the outer mold cavity surface and the inner mold cavity surface opposite to each other, a sliding hole is formed in the outer sliding block, the inner sliding block is matched with the sliding hole in a sliding mode, a pushing hole communicated with the sliding hole is formed in the outer sliding block, a first pushing rod is movably matched in the pushing hole, a first inclined hole into which the end portion of the first pushing rod can be inserted is formed in the inner sliding block, an inclined bending head matched with the inclined hole is arranged at the end portion of the first pushing rod, when the first pushing rod extends towards the first inclined hole, the inner mold cavity surface of the inner sliding, the inner cavity surface of the inner slide block is far away from the injection molding piece; the outer slide block is provided with a second inclined hole, and a second ejector rod is arranged corresponding to the second inclined hole, so that when the second ejector rod extends into the second inclined hole, the outer cavity surface of the outer slide block is close to the injection molding part, and when the second ejector rod moves out of the second inclined hole, the inner cavity surface of the inner slide block is far away from the injection molding part.
2. The slider structure of an injection mold according to claim 1, wherein the first inclined hole is inclined from top to bottom toward an inside of the mold, and the second inclined hole is inclined from top to bottom toward an outside of the mold.
3. The slide structure of an injection mold according to claim 1, wherein the pushing hole has a width ensuring communication with the first inclined hole all the time in a range in which the inner slide and the outer slide relatively move.
4. The slide block structure of an injection mold according to claim 1, wherein a first return spring acts between the end of the inner slide block and the slide hole to ensure that the inner slide block is separated from the injection molded part when the first ejector pin is separated from the first inclined hole.
5. The slide block structure of an injection mold according to claim 1, wherein a second return spring is provided between the outer slide block and the mold to ensure that the outer slide block is away from the injection molded part when the second ejector pin is away from the second inclined hole.
6. The sliding block structure of the injection mold according to claim 1, wherein the lower mold base is provided with a first limiting portion for limiting the inner sliding block corresponding to the first return spring, so that after the first ejector rod leaves the first inclined hole, the end portion of the first ejector rod corresponds to the first inclined hole, and a second limiting portion for limiting the outer sliding block corresponding to the first return spring is provided, so that after the second ejector rod leaves the second inclined hole, the end portion of the second ejector rod corresponds to the second inclined hole.
7. The slider structure of an injection mold according to claim 1, wherein the inner slider and the outer slider are slidably disposed on the lower mold base, the first ejector rod and the second ejector rod are disposed on the upper mold base, and after the upper mold base and the lower mold base are assembled, the first ejector rod and the second ejector rod form a complete injection mold cavity by the cavity surfaces of the inner slider and the outer slider and the other cavity surfaces of the mold base.
8. The slide structure of an injection mold according to claim 1, wherein the cavity formed by the cavity surfaces of the outer slide and the inner slide is the cavity at the hole site of the injection molded part.
9. The slider structure of an injection mold according to claim 1, wherein the second inclined hole is two on both sides of the first inclined hole, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010413094.0A CN111688130A (en) | 2020-05-15 | 2020-05-15 | Sliding block structure of injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010413094.0A CN111688130A (en) | 2020-05-15 | 2020-05-15 | Sliding block structure of injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111688130A true CN111688130A (en) | 2020-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010413094.0A Pending CN111688130A (en) | 2020-05-15 | 2020-05-15 | Sliding block structure of injection mold |
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| CN (1) | CN111688130A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112248311A (en) * | 2020-09-30 | 2021-01-22 | 宁波方正汽车模具股份有限公司 | Mould demoulding structure of upper frame of automobile door plate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201098987Y (en) * | 2007-08-28 | 2008-08-13 | 汉达精密电子(昆山)有限公司 | Male die inside and outside composite slide block |
| US20120298666A1 (en) * | 2010-01-28 | 2012-11-29 | Si Joong Kwon | Stopper for packaging container |
| CN103056998A (en) * | 2011-10-20 | 2013-04-24 | 汉达精密电子(昆山)有限公司 | Bi-directional barb exiting sliding block mechanism |
| CN104002436A (en) * | 2014-06-12 | 2014-08-27 | 苏州天脉导热科技有限公司 | Internal sliding block, external sliding block and shovel integrated structure of injection mold system |
-
2020
- 2020-05-15 CN CN202010413094.0A patent/CN111688130A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201098987Y (en) * | 2007-08-28 | 2008-08-13 | 汉达精密电子(昆山)有限公司 | Male die inside and outside composite slide block |
| US20120298666A1 (en) * | 2010-01-28 | 2012-11-29 | Si Joong Kwon | Stopper for packaging container |
| CN103056998A (en) * | 2011-10-20 | 2013-04-24 | 汉达精密电子(昆山)有限公司 | Bi-directional barb exiting sliding block mechanism |
| CN104002436A (en) * | 2014-06-12 | 2014-08-27 | 苏州天脉导热科技有限公司 | Internal sliding block, external sliding block and shovel integrated structure of injection mold system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112248311A (en) * | 2020-09-30 | 2021-01-22 | 宁波方正汽车模具股份有限公司 | Mould demoulding structure of upper frame of automobile door plate |
| CN112248311B (en) * | 2020-09-30 | 2022-08-09 | 宁波方正汽车模具股份有限公司 | Mould demoulding structure of upper frame of automobile door plate |
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Address after: 310051 1st and 6th floors, no.451 Internet of things street, Binjiang District, Hangzhou City, Zhejiang Province Applicant after: Zhejiang Zero run Technology Co.,Ltd. Address before: 310051 1st and 6th floors, no.451 Internet of things street, Binjiang District, Hangzhou City, Zhejiang Province Applicant before: ZHEJIANG LEAPMOTOR TECHNOLOGY Co.,Ltd. |
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Application publication date: 20200922 |