CN108162322B - Self-locking mechanism for preventing line position from retreating and self-locking and unlocking method thereof - Google Patents
Self-locking mechanism for preventing line position from retreating and self-locking and unlocking method thereof Download PDFInfo
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- CN108162322B CN108162322B CN201711424896.6A CN201711424896A CN108162322B CN 108162322 B CN108162322 B CN 108162322B CN 201711424896 A CN201711424896 A CN 201711424896A CN 108162322 B CN108162322 B CN 108162322B
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- limiting block
- limiting
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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
- B29C45/2602—Mould construction elements
-
- 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
- B29C45/2602—Mould construction elements
- B29C45/2606—Guiding or centering means
-
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a self-locking mechanism for preventing a slide from backing and a self-locking and unlocking method thereof.
Description
Technical Field
The invention relates to the technical field of injection molds, in particular to a self-locking mechanism for preventing a slide from retreating and a self-locking and unlocking method thereof.
Background
In the existing mold, when the driving mechanism directly pulls core to move the position, the part matched with the position cannot be locked by the mold clamping force, and external force needs to be applied to the matched part through the driving mechanism, but due to the inaccuracy of the driving mechanism, the position is often caused to retreat under the action of injection molding pressure, so that defects such as multiple glue, burrs, flash and the like on a product are caused, the dimensional accuracy of the product is poor, the production progress is influenced, and the quality of the product is reduced.
Disclosure of Invention
The invention aims to provide a self-locking mechanism for preventing a slide from backing and a self-locking and unlocking method thereof, wherein the self-locking mechanism for preventing the slide from backing can effectively lock the position of a slide push plate, prevent the slide push plate from backing due to overlarge injection pressure, prevent defects of products such as multiple glue, burrs, flash and the like, and ensure the quality of injection molded products.
The technical scheme is as follows:
the self-locking mechanism for preventing the slide from retreating comprises a slide push plate, a fixed plate, a limiting mechanism, a top block and a driving mechanism, wherein the fixed plate is arranged on two sides of the slide push plate;
the limiting mechanism comprises a first limiting block, a second limiting block and limiting grooves, the first limiting block and the second limiting block are arranged on two sides of the inside of the self-locking groove, the limiting grooves are arranged on two sides of the fixing plate, and the limiting grooves are matched with the outer end faces of the first limiting block and the second limiting block;
the inside face that supports that presses that has of self-locking groove, the up end laminating of support face and first stopper and second stopper, the oblique top face is located one side of terminal surface in first stopper and the second stopper, and the direction of the interior terminal surface of stopper to outer terminal surface is horizontal, and the distance between the top of fixed plate inboard and oblique top face at least is greater than the horizontal length of stopper, and the distance of limiting surface and fixed plate inboard is less than the horizontal length of stopper.
The two sides of the self-locking groove are provided with sliding holes which are divided into a first sliding hole and a second sliding hole, and the first sliding hole and the second sliding hole are oppositely arranged.
The first limiting block and the second limiting block slide in the first sliding hole and the second sliding hole respectively, and the lengths of the first limiting block and the second limiting block are both greater than those of the first sliding hole and the second sliding hole.
The limiting groove is arc-shaped, the outer end surfaces of the first limiting block and the second limiting block are arc-shaped, and the arc-shaped limiting groove is matched with the arc-shaped outer end surface.
The top of kicking block is by top to middle part increase gradually, and the top face is divided into first oblique top surface and second oblique top surface, and first oblique top surface and second oblique top surface set up relatively.
Protruding clamping positions are arranged on two sides of a notch of the self-locking groove, a clamping strip is arranged in the middle of the top block, and the clamping strip moves between the limiting block and the clamping positions.
The limiting surface is positioned above the clamping strip and forms a limiting opening with the upper end surface of the clamping strip, and the limiting opening is matched with the lower end surface of the limiting block.
The limiting mechanism is symmetrically arranged along the center line of the first sliding hole and the second sliding hole.
The self-locking method for preventing the line bit from backing comprises the following steps:
the driving mechanism pushes the ejector block to enable the slide push plate to move;
the inclined top surface of the top block pushes the first limiting block and the second limiting block outwards;
when the first limiting block and the second limiting block reach the limiting groove, the first limiting block and the second limiting block sink into the limiting groove;
the top block continues to move;
the limiting surface is attached to the outer end surfaces of the first limiting block and the second limiting block;
and (5) completing self-locking.
An unlocking method for preventing a row bit from backing comprises the following steps:
the driving mechanism pulls the top block;
the limiting surface is far away from the outer end surfaces of the first limiting block and the second limiting block;
the clamping strip of the top block contacts with the clamping position of the self-locking groove to pull the slide push plate;
the first limiting block and the second limiting block exit the limiting groove;
the first limiting block and the second limiting block move inwards and are attached to the inclined top surface;
and (5) unlocking is completed.
The advantages and principles of the invention are described below:
1. the fixed plates are arranged at two sides of the slide push plate, and can play a role in guiding the slide push plate when the drive mechanism pushes the slide push plate, the self-locking groove of the slide push plate provides a position for realizing self-locking for the limit mechanism, and the ejector block is arranged at the notch of the self-locking groove, so that the ejector block can conveniently contact the self-locking mechanism through the drive mechanism;
the pressing surface is attached to the upper end surfaces of the first limiting block and the second limiting block, when injection molding pressure acts on the slide push plate, the injection molding pressure is transmitted to the limiting block through the pressing surface, and as the outer end surfaces of the first limiting block and the second limiting block are matched with the limiting groove, the limiting block transmits part of injection molding pressure to the limiting groove, so that the injection molding pressure required to be born by the jacking block and the driving mechanism is dispersed, the position of the slide push plate is not changed by utilizing the matching between the limiting block and the limiting groove, the slide is not retracted, and the defects of multiple glue, flash and the like of a product manufactured by a die are avoided, and the production progress is maintained;
the top block is provided with an inclined top surface and a limiting surface, the distance between the top end of the inclined top surface and the inner side of the fixed plate is at least longer than the transverse length of the limiting block, so that when the limiting block exits from the limiting groove, enough space is reserved between the inclined top surface and the fixed plate to enable the limiting block to be attached to the inclined top surface, and meanwhile the limiting block is limited to move in a fixed range and is not easy to slide to other places; the distance between the limiting surface and the inner side of the fixed plate is smaller than the transverse length of the limiting block, and the limiting block is pushed into the limiting groove by the top block.
2. Sliding holes are formed in two sides of the self-locking groove, the self-locking groove is communicated with the limiting groove, the first sliding holes and the second sliding holes are matched with the first limiting block and the second limiting block to be used, and the first limiting block and the second limiting block are limited to move only along the transverse direction.
3. The sliding Kong Weixian bit block provides a sliding space in the self-locking groove, and the length of the limiting block is longer than that of the sliding space, so that the limiting block can protrude from the sliding hole to be matched with the limiting block when the self-locking mechanism for placing the line position to retreat realizes self locking; the unlocking limiting block can protrude from the sliding hole to the inner part of the self-locking groove.
4. The design of arc spacing groove and the design of convex outer terminal surface not only can cooperate in the shape, when the kicking block side pushes away the stopper, the outer terminal surface of convex slides into the spacing groove more easily.
5. The top of the top block gradually increases from the top to the middle, when the driving mechanism pushes the top block, the top block can push the limiting blocks to two sides, the first inclined top surface and the second inclined top surface respectively push the first limiting block and the second limiting block at the same time.
6. The notch is provided with the screens and is provided with the card strip at kicking block middle part, has restricted the stroke and the position of kicking block at the auto-lock groove, and during the unblock, the cooperation of screens and card strip can stimulate the line position push pedal and retreat, makes the stopper withdraw from the spacing groove.
7. The limiting opening is matched with the lower end face of the limiting block, so that the maximum stroke of the top block can be reached when the driving mechanism pushes the top block.
8. When the injection molding pressure is transferred to the limiting mechanism, the limiting mechanism is symmetrically arranged to transfer the injection molding pressure to the fixing plates on two sides, and the injection molding pressure is not concentrated on the top block, so that the position of the slide push plate can be better kept.
Drawings
FIG. 1 is a perspective view of a self-locking mechanism for setting a row position back in an embodiment of the present invention;
FIG. 2 is a block diagram of a self-locking mechanism for setting a row position to retreat in an unlocking state according to an embodiment of the present invention;
FIG. 3 is a block diagram of a self-locking mechanism for setting a row position to retreat in a self-locking state according to an embodiment of the present invention;
FIG. 4 is a block diagram of a self-locking mechanism for setting a row position back in an unlocking process according to an embodiment of the present invention;
reference numerals illustrate:
10. the device comprises a limiting mechanism 11, a first limiting block, 12, a second limiting block, 13, a limiting groove, 20, a top block, 21, a first inclined top surface, 22, a second inclined top surface, 23, a limiting surface, 24, clamping strips, 30, a slide push plate, 31, a self-locking groove, 32, a clamping position, 40, a fixed plate, 50 and a driving oil cylinder.
Detailed Description
The following describes embodiments of the present invention in detail.
The self-locking mechanism for preventing the line position from backing as shown in fig. 1 to 4 comprises a line position push plate 30, a fixed plate 40, a limiting mechanism 10, a top block 20 and a driving oil cylinder 50, wherein the fixed plate 40 is arranged on two sides of the line position push plate 30, the tail end of the line position push plate 30 is provided with a self-locking groove 31, the limiting mechanism 10 is positioned in the self-locking groove 31, the top block 20 is positioned at a notch of the self-locking groove 31, the top of the top block 20 is provided with an inclined top surface and a limiting surface 23, the limiting surface 23 is positioned below the inclined top surface, and the driving oil cylinder 50 is connected with the top block 20 to drive the movement of the top block 20;
the limiting mechanism 10 comprises a first limiting block 11, a second limiting block 12 and a limiting groove 13, wherein the first limiting block 11 and the second limiting block 12 are arranged on two sides of the inside of the self-locking groove 31, the limiting groove 13 is arranged on two sides of the fixed plate 40, and the limiting groove 13 is matched with the outer end surfaces of the first limiting block 11 and the second limiting block 12;
from the inside face that supports that presses that has of locked groove 31, support the face and laminate with the up end of first stopper 11 and second stopper 12, the oblique top face is located one side of the interior terminal surface of first stopper 11 and second stopper 12, and the direction of the interior terminal surface of stopper to the outer terminal surface is horizontal, and the distance between the top of fixed plate 40 inboard and oblique top face at least is greater than the lateral length of stopper, and the distance of limiting surface 23 and fixed plate 40 inboard is less than the lateral length of stopper.
The two sides of the self-locking groove 31 are provided with sliding holes, the sliding holes are divided into a first sliding hole and a second sliding hole, the first sliding hole and the second sliding hole are oppositely arranged, the first limiting block 11 and the second limiting block 12 slide in the first sliding hole and the second sliding hole respectively, and the lengths of the first limiting block 11 and the second limiting block 12 are larger than those of the first sliding hole and the second sliding hole respectively.
Protruding clamping positions 32 are arranged on two sides of a notch of the self-locking groove 31, a clamping strip 24 is arranged in the middle of the top block 20, the clamping strip 24 moves between the limiting block and the clamping positions 32, the limiting surface 23 is located above the clamping strip 24 and forms a limiting opening with the upper end face of the clamping strip 24, and the limiting opening is matched with the lower end face of the limiting block.
The limiting groove 13 is arc-shaped, the outer end surfaces of the first limiting block 11 and the second limiting block 12 are arc-shaped, and the arc-shaped limiting groove 13 is matched with the arc-shaped outer end surface.
The top of kicking block 20 gradually increases from the top to the middle part, and the oblique top surface divide into first oblique top surface 21 and second oblique top surface 22, and first oblique top surface 21 and second oblique top surface 22 are relative to setting.
The limiting mechanism 10 is symmetrically arranged along the center line of the first sliding hole and the second sliding hole.
The self-locking process of the self-locking mechanism for preventing the line position from retreating comprises the following steps: the driving oil cylinder 50 pushes the top block 20 to enable the slide push plate 30 to move, the inclined top surface of the top block 20 pushes the first limiting block 11 and the second limiting block 12 to the outside, when the first limiting block 11 and the second limiting block 12 reach the limiting groove 13, the first limiting block 11 and the second limiting block 12 sink into the limiting groove 13, the top block 20 continues to move, the limiting surface 23 is in contact with the outer end surfaces of the first limiting block 11 and the second limiting block, and the limiting opening is matched with the lower end surface of the limiting block to finish self-locking.
The unlocking process corresponding to the self-locking process of the self-locking mechanism for preventing the line position from backing is as follows: the driving oil cylinder 50 pulls the top block 20 along the A direction, the limiting opening is separated from the lower end face of the limiting block, the limiting face 23 is far away from the outer end faces of the first limiting block 11 and the second limiting block, the clamping strip 24 of the top block 20 is contacted with the clamping position 32 of the self-locking groove 31, the slide push plate 30 is pulled, the first limiting block 11 and the second limiting block 12 are withdrawn from the limiting groove 13, the first limiting block 11 and the second limiting block 12 move inwards and are attached to the inclined top face, and unlocking is completed.
This embodiment has the following advantages:
1. the fixing plates 40 are arranged on two sides of the slide push plate 30, and can play a role in guiding the slide push plate 30 when the drive oil cylinder 50 pushes the slide push plate 30, the self-locking groove 31 of the slide push plate 30 provides a position for realizing self-locking for the limiting mechanism 10, and the ejector block 20 is arranged at the notch of the self-locking groove 31, so that the ejector block 20 can conveniently contact the self-locking mechanism through the drive oil cylinder 50;
the abutting surface is attached to the upper end surfaces of the first limiting block 11 and the second limiting block 12, when injection molding pressure acts on the slide push plate 30, the injection molding pressure is transmitted to the limiting block through the abutting surface, and as the outer end surfaces of the first limiting block 11 and the second limiting block 12 are matched with the limiting groove 13, the limiting block transmits part of injection molding pressure to the limiting groove 13, so that injection molding pressure required to be born by the top block 20 and the driving oil cylinder 50 is dispersed, the position of the slide push plate 30 is not changed by utilizing the matching between the limiting block and the limiting groove 13, the slide is not retracted, and the defects of multiple glue, burrs, flash and the like of a product manufactured by a die are avoided, and the production progress is maintained;
the top block 20 is provided with the inclined top surface and the limiting surface 23, the distance between the top end of the inclined top surface and at least the inner side of the fixed plate 40 is larger than the transverse length of the limiting block, so that when the limiting block exits the limiting groove 13, enough space is reserved between the inclined top surface and the fixed plate 40 to enable the limiting block to be attached to the inclined top surface, and meanwhile the limiting block is limited to move in a fixed range and is not easy to slide to other places; the distance between the limiting surface 23 and the inner side of the fixed plate 40 is smaller than the transverse length of the limiting block, so that the top block 20 pushes the limiting block into the limiting groove 13.
2. Sliding holes are formed in two sides of the self-locking groove 31, so that the self-locking groove 31 is communicated with the limiting groove 13, and the first sliding holes and the second sliding holes are matched with the first limiting block 11 and the second limiting block 12 to be used, so that the first limiting block 11 and the second limiting block 12 can only move along the transverse direction.
3. The sliding Kong Weixian bit block provides a sliding space in the self-locking groove 31, and the length of the limiting block is longer than that of the sliding space, so that the limiting block can protrude from the sliding hole to be matched with the limiting block when the self-locking mechanism for placing the line position to retreat realizes self locking; the unlocking limiting block may protrude from the sliding hole toward the inside of the self-locking groove 31.
4. The notch is provided with the clamping position 32 and the clamping strip 24 is arranged in the middle of the top block 20, so that the stroke and the position of the top block 20 in the self-locking groove 31 are limited, and when the self-locking groove is unlocked, the clamping position 32 and the clamping strip 24 are matched to pull the slide push plate 30 to retreat, so that the limiting block is retreated from the limiting groove 13.
5. The design of arc spacing groove 13 and the design of convex outer terminal surface not only can cooperate in the shape, and when kicking block 20 side pushes away the stopper, the outer terminal surface of convex slides into spacing groove 13 more easily.
6. The top of the top block 20 gradually increases from the top to the middle, when the driving oil cylinder 50 pushes the top block 20, the top block 20 can push the limiting blocks to two sides, and the first inclined top surface 21 and the second inclined top surface 22 push the first limiting block 11 and the second limiting block 12 respectively and simultaneously.
7. The limit opening is matched with the lower end face of the limit block, so that the top block 20 can reach the maximum stroke when the driving oil cylinder 50 pushes the top block 20.
8. When the injection molding pressure is transferred to the limiting mechanism 10, the limiting mechanism 10 is symmetrically arranged to transfer the injection molding pressure to the fixing plates 40 on two sides, instead of concentrating the injection molding pressure on the top block 20, so that the position of the slide push plate 30 can be better kept.
The foregoing is merely exemplary embodiments of the present invention, and is not intended to limit the scope of the present invention; any substitutions and modifications made without departing from the spirit of the invention are within the scope of the invention.
Claims (7)
1. The self-locking mechanism for preventing the slide from retreating is characterized by comprising a slide push plate, a fixed plate, a limiting mechanism, a top block and a driving mechanism, wherein the fixed plate is arranged on two sides of the slide push plate;
the limiting mechanism comprises a first limiting block, a second limiting block and limiting grooves, wherein the first limiting block and the second limiting block are arranged on two sides of the inside of the self-locking groove, the limiting grooves are arranged on two sides of the fixing plate, and the limiting grooves are matched with the outer end faces of the first limiting block and the second limiting block;
the self-locking groove is internally provided with a pressing surface, the pressing surface is attached to the upper end surfaces of the first limiting block and the second limiting block, the inclined top surface is positioned on one side of the inner end surfaces of the first limiting block and the second limiting block, the direction from the inner end surface to the outer end surface of the limiting block is transverse, the distance between the inner side of the fixed plate and at least the top end of the inclined top surface is larger than the transverse length of the limiting block, and the distance between the limiting surface and the inner side of the fixed plate is smaller than the transverse length of the limiting block;
the two sides of the self-locking groove are provided with sliding holes, the sliding holes are divided into a first sliding hole and a second sliding hole, and the first sliding hole and the second sliding hole are arranged oppositely;
the first limiting block and the second limiting block slide in the first sliding hole and the second sliding hole respectively, and the lengths of the first limiting block and the second limiting block are larger than those of the first sliding hole and the second sliding hole;
the top of kicking block is from top to middle part increase gradually, the top of sloping divide into first oblique top surface and second oblique top surface, first oblique top surface and second oblique top surface set up relatively.
2. The self-locking mechanism for preventing a slide from retreating according to claim 1, wherein the limiting groove is arc-shaped, the outer end surfaces of the first limiting block and the second limiting block are arc-shaped, and the arc-shaped limiting groove is matched with the arc-shaped outer end surface.
3. The self-locking mechanism for preventing backward movement of a row according to any one of claims 1 to 2, wherein protruding clamping positions are arranged on two sides of a notch of the self-locking groove, a clamping strip is arranged in the middle of the top block, and the clamping strip moves between the limiting block and the clamping positions.
4. A self-locking mechanism for preventing backward movement of a slide as claimed in claim 3, wherein the limit surface is located above the clamping bar and forms a limit opening with the upper end surface of the clamping bar, and the limit opening is matched with the lower end surface of the limit block.
5. The self-locking mechanism for preventing backward movement of a row according to any one of claims 1 to 2, wherein the limit mechanism is symmetrically disposed along a center line of the first sliding hole and the second sliding hole opposite to each other.
6. A self-locking method for preventing the backward movement of a row bit by using the self-locking mechanism for preventing the backward movement of a row bit according to any one of claims 1 to 5, comprising the steps of:
the driving mechanism pushes the ejector block to enable the slide push plate to move;
the inclined top surface of the top block pushes the first limiting block and the second limiting block outwards;
when the first limiting block and the second limiting block reach the limiting groove, the first limiting block and the second limiting block sink into the limiting groove;
the top block continues to move;
the limiting surface is attached to the outer end surfaces of the first limiting block and the second limiting block;
and (5) completing self-locking.
7. An unlocking method for preventing the backward movement of a row bit by using the self-locking mechanism for preventing the backward movement of a row bit according to any one of claims 1 to 5, comprising the steps of:
the driving mechanism pulls the top block;
the limiting surface is far away from the outer end surfaces of the first limiting block and the second limiting block;
the clamping strip of the top block is contacted with the clamping position of the self-locking groove, and the line position pushing plate is pulled;
the first limiting block and the second limiting block exit the limiting groove;
the first limiting block and the second limiting block move inwards and are attached to the inclined top surface;
and (5) unlocking is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711424896.6A CN108162322B (en) | 2017-12-25 | 2017-12-25 | Self-locking mechanism for preventing line position from retreating and self-locking and unlocking method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711424896.6A CN108162322B (en) | 2017-12-25 | 2017-12-25 | Self-locking mechanism for preventing line position from retreating and self-locking and unlocking method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108162322A CN108162322A (en) | 2018-06-15 |
| CN108162322B true CN108162322B (en) | 2023-10-10 |
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| CN201711424896.6A Active CN108162322B (en) | 2017-12-25 | 2017-12-25 | Self-locking mechanism for preventing line position from retreating and self-locking and unlocking method thereof |
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| CN112848098A (en) * | 2020-12-23 | 2021-05-28 | 东莞燊安塑胶模具有限公司 | Mould for injection molding forming |
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