CN114131996B - Small-size left and right half mould compound locking mechanism - Google Patents
Small-size left and right half mould compound locking mechanism Download PDFInfo
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- CN114131996B CN114131996B CN202111340885.6A CN202111340885A CN114131996B CN 114131996 B CN114131996 B CN 114131996B CN 202111340885 A CN202111340885 A CN 202111340885A CN 114131996 B CN114131996 B CN 114131996B
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- half die
- screw
- right half
- shaped block
- die
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- 230000007246 mechanism Effects 0.000 title claims abstract description 35
- 150000001875 compounds Chemical class 0.000 title description 2
- 230000009471 action Effects 0.000 claims abstract description 12
- 238000001125 extrusion Methods 0.000 claims description 9
- 230000008901 benefit Effects 0.000 abstract description 7
- 239000000758 substrate Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000001175 rotational moulding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
Abstract
The invention discloses a small left and right half mold closing and locking mechanism, which comprises the following components: the device comprises a left half die, a right half die, a finger cylinder, a V-shaped block, a guide sliding block, a double-column cylinder, a substrate, a first screw, a second screw, a guide rod, a third screw, a fourth screw, a fifth screw and a sixth screw; the double-column cylinder is fixed on the base plate through a fifth screw; one end of the guide sliding block is connected with the piston of the double-column cylinder, and the other end of the guide sliding block is connected with the V-shaped block through a sixth screw; the left half die is arranged on a left sliding block of the finger cylinder through a first screw, and the right half die is arranged on a right sliding block of the finger cylinder through a second screw; the finger cylinder is fixed on the base plate through a third screw. The invention has the advantages of small volume, small clamping force, large locking force and high action speed.
Description
Technical Field
The invention belongs to the technical field of mold closing of left and right mold halves, and particularly relates to a small-sized mold closing and locking mechanism of the left and right mold halves.
Background
Many devices use a combination mold, and the combination mold needs a mold closing and locking mechanism. The die closing and locking system mainly adopts bolts, a hydraulic system, a motor screw system, a large-size air cylinder and the like as power sources.
For example, in the die-closing and locking device of the rotational molding die of patent CN203418676U, bolts and nuts are respectively arranged on two half dies, the bolts are screwed down by an electric or pneumatic screwdriver after die closing, and the bolts are loosened by the electric or pneumatic screwdriver before die opening. This mechanism is inconvenient for the equipment to automatically perform continuous operation.
In the patent CN202427843U mold clamping and locking device, after an upper mold and a lower mold are clamped, a plurality of I-shaped pull rods are adopted to be installed in a mold clamping groove to lock the molds. The H-shaped pull rod of the mechanism is easy to wear and block, is unfavorable for automatic continuous operation, and is easy to cause the problem of large die gap after the H-shaped pull rod is worn.
In the locking mechanism of the high-pressure forming die in the patent CN2561536Y, after the die is closed by one oil cylinder, the other oil cylinder pulls the upright post to prop against the die, so that the locking is realized. The mechanism needs to use a hydraulic system, and has the advantages of large volume, high cost, slow action and easy oil leakage.
The hydraulic system has large volume, large mold clamping force, high cost, low action speed and easy oil leakage; the motor lead screw system has large volume, low action speed, large mold clamping force and high cost; the large-size cylinder has large volume, large mold clamping force and low action speed. These systems are not suitable for applications requiring small equipment volumes, small clamping forces (safety against clamping damage), fast movement speeds, and low costs.
Disclosure of Invention
The invention solves the technical problems that: overcomes the defects of the prior art, provides a small left and right half mold closing locking mechanism, and has the advantages of small volume, small closing force (safety and clamping injury prevention), large locking force, high action speed and low cost.
The invention aims at realizing the following technical scheme: a small left and right mold half mold closing and locking mechanism, comprising: the device comprises a left half die, a right half die, a finger cylinder, a V-shaped block, a guide sliding block, a double-column cylinder, a substrate, a first screw, a second screw, a guide rod, a third screw, a fourth screw, a fifth screw and a sixth screw; the double-column cylinder is fixed on the base plate through a fifth screw; one end of the guide sliding block is connected with a piston of the double-column cylinder, and the other end of the guide sliding block is connected with the V-shaped block through a sixth screw; the left half die is connected with the left sliding block of the finger cylinder through a first screw, and the right half die is connected with the right sliding block of the finger cylinder through a second screw; the finger cylinder is fixed on the substrate through a third screw; when the left half die and the right half die are clamped, the groove formed by the V-shaped block clamps the protruding part on the left half die and the protruding part on the right half die.
Among the above-mentioned small-size half mould locking mechanism that closes about still includes: a control system; the control system controls the air flow direction of compressed air which is introduced into the double-column air cylinder to extend or retract the piston of the double-column air cylinder, and controls the extending and retracting actions of the V-shaped block.
In the small left and right half mold closing and locking mechanism, the control system can adjust the movement speed and the thrust of the V-shaped block by adjusting the flow rate and the pressure of compressed air which is introduced into the double-column air cylinder.
In the small left and right half mold closing and locking mechanism, the control system controls the air flow direction of compressed air introduced into the finger air cylinder to realize the opening or closing of the two sliding blocks of the finger air cylinder, and controls the opening and closing actions of the left half mold and the right half mold.
In the small left and right half mold closing and locking mechanism, the control system can adjust the speed and the clamping force of the left half mold and the right half mold closing by adjusting the flow rate and the pressure of compressed air which is introduced into the finger cylinder.
In the small left and right half mold closing and locking mechanism, the included angle of the working surface which is a groove formed by the V-shaped block is alpha, the maximum self-locking angle of the left half mold and the right half mold is calculated according to the sliding friction coefficient of the V-shaped block, the left half mold and the right half mold, and the alpha is 2 times of the maximum self-locking angle of the left half mold and the right half mold.
In the small left and right half mold clamping and locking mechanism, when the left half mold and the right half mold are clamped, the V-shaped block is clamped on the left half mold and the right half mold, and the contact part of the V-shaped block and the left half mold and the right half mold is at the maximum self-locking angle; under the stress state, as the V-shaped block, the left half die and the right half die are in a self-locking state, the left half die and the right half die apply any extrusion force to the V-shaped block, the V-shaped block cannot fall back, and the V-shaped block can be reliably locked to the left half die and the right half die; because the left half mould, the right half mould and the V-shaped block are at the maximum self-locking angle, the V-shaped block cannot be clamped on the left half mould and the right half mould and cannot retract, and the work continuity can be realized.
Compared with the prior art, the invention has the following beneficial effects:
(1) The mechanism of the invention has small volume and can realize the miniaturization of equipment; two cylinders are adopted as a power system, so that the cost is greatly reduced, and automation of equipment is easy to realize;
(2) The mechanism of the invention acts rapidly, which is beneficial to improving the working efficiency of the whole equipment;
(3) The mechanism has the advantages of small clamping force of the clamping force, good intrinsic safety, low requirements on a control system and a protection system, convenience in reducing the cost and improvement of the working efficiency of equipment.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
FIG. 1 is a schematic diagram of the mechanism of the present invention;
FIG. 2 is a diagram of a V-block configuration;
FIG. 3 is a diagram of the left and right mold halves;
FIG. 4 is a view of the V-block in a locked position with the left and right mold halves;
fig. 5 is a schematic diagram of the stress states of the left half mold and the right half mold.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
FIG. 1 is a schematic diagram of the mechanism of the present invention. As shown in fig. 1, the small-sized left and right half mold closing and locking mechanism includes: the left half die 110, the right half die 120, the finger cylinder 2, the V-shaped block 3, the guide slide block 4, the double-column cylinder 5, the base plate 6, the first screw 7, the second screw 8, the guide rod 9, the third screw 10, the fourth screw 11, the fifth screw 12 and the sixth screw 13; wherein the double cylinder 5 is fixed on the base plate 6 by a fifth screw 12; one end of the guide sliding block 4 is connected with a piston of the double-column cylinder 5, and the other end of the guide sliding block 4 is connected with the V-shaped block 3 through a sixth screw 13; the left half die 110 is connected with the left sliding block of the finger cylinder 2 through a first screw 7, and the right half die 120 is connected with the right sliding block of the finger cylinder 2 through a second screw 8; the finger cylinder 2 is fixed on the base plate 6 through a third screw 10; when the left half die and the right half die are clamped, the groove formed in the V-shaped block 3 clamps the protruding portion on the left half die and the protruding portion on the right half die.
The double-cylinder air cylinder 5 is fixed on the base plate 6 through a fifth screw 12, one end of the guide sliding block 4 is connected with a piston of the double-cylinder air cylinder 5, and the other end of the guide sliding block 4 is fixed with the V-shaped block 3 through a sixth screw 13. The control system controls the air flow direction of compressed air flowing into the double-cylinder air cylinder to realize the extension or retraction of the piston of the double-cylinder air cylinder, and realizes the extension and retraction actions of the V-shaped block. The movement speed and the thrust of the V-shaped block (double cylinder piston) can be adjusted by adjusting the flow rate and the pressure of compressed air fed into the double cylinder.
The left and right mold halves 1 are fixed to both sliding blocks of the finger cylinder 2 by first screws 7 and second screws 8, and the finger cylinder 2 is fixed to the base plate 6 by third screws 10. The control system controls the air flow direction of compressed air flowing into the finger air cylinder to realize the opening or closing of the two sliding blocks of the finger air cylinder, and controls the opening and closing actions of the left half mold and the right half mold. The mold closing speed and the clamping force of the left half mold and the right half mold (finger cylinder slide blocks) can be adjusted by adjusting the flow rate and the pressure of compressed air flowing into the finger cylinder.
As shown in fig. 2 and 4, the V-block working surface angle is α. And calculating the maximum self-locking angle of the V-shaped block and the left and right half mold materials according to the sliding friction coefficient of the V-shaped block and the left and right half mold materials, wherein alpha is 2 times of the maximum self-locking angle of the V-shaped block and the left and right half mold materials. When the left half mould and the right half mould are clamped, the V-shaped block is clamped on the left half mould and the right half mould (as shown in figure 3), and the contact part of the V-shaped block and the left half mould and the right half mould is at the maximum self-locking angle. Under the stress state, as the V-shaped block, the left half die and the right half die are in a self-locking state, the left half die and the right half die apply any extrusion force to the V-shaped block, the V-shaped block cannot fall back, and the reliable locking of the V-shaped block to the left half die and the right half die can be ensured. Meanwhile, the V-shaped blocks cannot be clamped on the left half mould and the right half mould and cannot retract due to the fact that the left half mould and the right half mould are at the maximum self-locking angle, and therefore work continuity can be achieved.
Mechanism theory of operation and workflow:
1) The initial state of the mechanism: the V-shaped block (double cylinder piston) is retracted, and the left and right half-moulds (finger cylinder slide blocks) are opened.
2) And (3) clamping left and right half moulds: the V-shaped block (double cylinder piston) keeps a retracted state, and the left half mold and the right half mold (finger cylinder slide block) are folded.
3) Left and right half mold locking: the V-shaped block (double cylinder piston) extends out, the V-shaped block locks the left half mould and the right half mould, and the left half mould and the right half mould (finger cylinder slide block) keep a closed state.
4) Opening the left half mould and the right half mould: the V-shaped block (double cylinder piston) is retracted, after the V-shaped block is unlocked, the left half mould and the right half mould (finger cylinder slide block) are opened, and the mechanism returns to the initial state.
The left half die and the right half die are symmetrical in stress state, and the right half die is used for carrying out stress analysis. The stressed state of the right half mold is shown in fig. 5. Wherein N is the extrusion force of the V-shaped block received by the right half die, and the stress direction is perpendicular to the inclined plane of the V-shaped groove of the V-shaped block; n1 is the extrusion force of the left half mold received by the right half mold, and the stress direction is perpendicular to the interface of the left half mold and the right half mold; f is the friction force of the V-shaped groove of the V-shaped block facing the right half mold, and the stress direction is parallel to the V-shaped surface of the V-shaped groove.
The right half die is stressed and balanced, and can be obtained by:
in the N direction: n=n1·cos (α/2)
In the f direction, the condition that the right half mold does not automatically slide toward the large end of the V-groove is (μ is the sliding friction coefficient):
f＝μ·N≥N1·sin(α/2)
→μ·N1·cos(α/2)≥N1·sin(α/2)
→μ·cos(α/2)≥sin(α/2)
→μ·≥sin(α/2)÷cos(α/2)＝tan(α/2)
→μ≥tan(α/2)
→Arctanμ≥α/2
→α≤2Arctanμ
when alpha is less than or equal to 2Arctan mu, the right half mould is in a self-locking state and cannot slide towards the large end of the V-shaped groove of the V-shaped block;
when alpha is more than 2Arctan mu, when the right half die is extruded by the left half die, the component force in the f opposite direction is larger than the maximum sliding friction force, and when the difference between the component force of the extrusion force of the right half die in the f opposite direction and the maximum sliding friction force of the extrusion force of the left half die is larger than the pushing force of the double-column cylinder, the right half die can slide towards the large end of the V-shaped groove of the V-shaped block (the left half die and the right half die are unlocked accidentally); when α=2arctan μ, the component force of the extrusion force of the right half die in the f opposite direction is equal to the sliding friction force, the extrusion force of the right half die in the left half die is not enough to enable the right half die to slide in the V-shaped groove, and the V-shaped block can reliably lock the left half die and the right half die and retract easily to unlock (can not be blocked and can not be pulled back).
The mechanism of the invention has small volume and can realize the miniaturization of equipment; two cylinders are adopted as a power system, so that the cost is greatly reduced, and automation of equipment is easy to realize; the mechanism of the invention acts rapidly, which is beneficial to improving the working efficiency of the whole equipment; the mechanism has the advantages of small clamping force of the clamping force, good intrinsic safety, low requirements on a control system and a protection system, convenience in reducing the cost and improvement of the working efficiency of equipment.
Although the present invention has been described in terms of the preferred embodiments, it is not intended to be limited to the embodiments, and any person skilled in the art can make any possible variations and modifications to the technical solution of the present invention by using the methods and technical matters disclosed above without departing from the spirit and scope of the present invention, so any simple modifications, equivalent variations and modifications to the embodiments described above according to the technical matters of the present invention are within the scope of the technical matters of the present invention.
Claims (6)
1. A small left and right mold half mold closing and locking mechanism, which is characterized by comprising: the device comprises a left half die (110), a right half die (120), a finger cylinder (2), a V-shaped block (3), a guide sliding block (4), a double-column cylinder (5), a base plate (6), a first screw (7), a second screw (8), a guide rod (9), a third screw (10), a fourth screw (11), a fifth screw (12) and a sixth screw (13); wherein,
the double-column air cylinder (5) is fixed on the base plate (6) through a fifth screw (12);
one end of the guide sliding block (4) is connected with a piston of the double-column cylinder (5), and the other end of the guide sliding block (4) is connected with the V-shaped block (3) through a sixth screw (13);
the left half die (110) is connected with the left sliding block of the finger cylinder (2) through a first screw (7), and the right half die (120) is connected with the right sliding block of the finger cylinder (2) through a second screw (8);
the finger cylinder (2) is fixed on the base plate (6) through a third screw (10);
when the left half die and the right half die are clamped, the groove formed in the V-shaped block (3) clamps the protruding part on the left half die and the protruding part on the right half die;
when the left half die and the right half die are clamped, the V-shaped block is clamped on the left half die and the right half die, and the contact part of the V-shaped block and the left half die and the right half die is at the maximum self-locking angle; under the stress state, as the V-shaped block, the left half die and the right half die are in a self-locking state, the left half die and the right half die apply any extrusion force to the V-shaped block, the V-shaped block cannot fall back, and the V-shaped block can be reliably locked to the left half die and the right half die; because the left half mould, the right half mould and the V-shaped block are at the maximum self-locking angle, the V-shaped block cannot be clamped on the left half mould and the right half mould and cannot retract, and work continuity is achieved.
2. The small left and right mold half mold closing and locking mechanism according to claim 1, further comprising: a control system; the control system controls the air flow direction of compressed air which is introduced into the double-column air cylinder (5) to realize the extension or retraction of the piston of the double-column air cylinder (5), and controls the extension and retraction actions of the V-shaped block (3).
3. The small left and right mold half mold closing and locking mechanism according to claim 2, wherein: the control system can adjust the movement speed and the thrust of the V-shaped block by adjusting the flow rate and the pressure of compressed air fed into the double-column cylinder.
4. The small left and right mold half mold closing and locking mechanism according to claim 2, wherein: the control system controls the air flow direction of compressed air which is introduced into the finger air cylinder (2) to realize the opening or closing of the two sliding blocks of the finger air cylinder (2) and realize the control of the opening and closing actions of the left half die and the right half die.
5. The small left and right mold half mold closing and locking mechanism according to claim 2, wherein: the control system can adjust the speed and the clamping force of the left half die and the right half die for clamping by adjusting the flow rate and the pressure of compressed air which is introduced into the finger cylinder (2).
6. The small left and right mold half mold closing and locking mechanism according to claim 1, wherein: the included angle of the working surface, namely the groove formed by the V-shaped block (3), is alpha, and the maximum self-locking angle of the left half die and the right half die is calculated according to the sliding friction coefficient of the V-shaped block, the left half die and the right half die, wherein alpha is 2 times of the maximum self-locking angle of the left half die and the right half die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111340885.6A CN114131996B (en) | 2021-11-12 | 2021-11-12 | Small-size left and right half mould compound locking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111340885.6A CN114131996B (en) | 2021-11-12 | 2021-11-12 | Small-size left and right half mould compound locking mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114131996A CN114131996A (en) | 2022-03-04 |
| CN114131996B true CN114131996B (en) | 2023-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111340885.6A Active CN114131996B (en) | 2021-11-12 | 2021-11-12 | Small-size left and right half mould compound locking mechanism |
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| Country | Link |
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| CN (1) | CN114131996B (en) |
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|---|---|---|---|---|
| GB1230090A (en) * | 1967-12-29 | 1971-04-28 | ||
| CN2345342Y (en) * | 1998-09-08 | 1999-10-27 | 罗军 | Composite mould device of injection machine and die casting machine |
| CN103203850A (en) * | 2012-12-16 | 2013-07-17 | 佛山市宝捷精密机械有限公司 | Mold locking internal-contracting-braking mechanism of bellows birdmouth injection machine |
| JP2014124777A (en) * | 2012-12-25 | 2014-07-07 | Meiki Co Ltd | Mold clamping device |
| CN105618708A (en) * | 2016-01-12 | 2016-06-01 | 中色科技股份有限公司 | Mould closing and locking mechanisms of extrusion casting machine with double molding boards |
| CN206030515U (en) * | 2016-08-24 | 2017-03-22 | 张家港市意久机械有限公司 | Gate plate -type clamping mechanism for blowing machine |
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Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8308465B2 (en) * | 2007-06-13 | 2012-11-13 | Injectnotech Inc. | Wedge-lock system for injection molds |
| ITRM20110165A1 (en) * | 2011-03-30 | 2012-10-01 | Sipa Progettazione Automaz | BLOWING MOLD |
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2021
- 2021-11-12 CN CN202111340885.6A patent/CN114131996B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1230090A (en) * | 1967-12-29 | 1971-04-28 | ||
| CN2345342Y (en) * | 1998-09-08 | 1999-10-27 | 罗军 | Composite mould device of injection machine and die casting machine |
| CN103203850A (en) * | 2012-12-16 | 2013-07-17 | 佛山市宝捷精密机械有限公司 | Mold locking internal-contracting-braking mechanism of bellows birdmouth injection machine |
| JP2014124777A (en) * | 2012-12-25 | 2014-07-07 | Meiki Co Ltd | Mold clamping device |
| CN105618708A (en) * | 2016-01-12 | 2016-06-01 | 中色科技股份有限公司 | Mould closing and locking mechanisms of extrusion casting machine with double molding boards |
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| CN108535071A (en) * | 2018-06-04 | 2018-09-14 | 广德亚太汽车智能制动系统有限公司 | A kind of tooling for quickly producing spectrum spoken parts in traditional operas sample |
Non-Patent Citations (1)
| Title |
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| 布勒两板压铸机合模系统介绍;卢宏远;邹智厚;卢敏;赵晓栋;宋清;;特种铸造及有色合金(第04期);第331-334页 * |
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| CN114131996A (en) | 2022-03-04 |
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