CN114131996A - Small-size half mould locking mechanism that closes about - Google Patents
Small-size half mould locking mechanism that closes about Download PDFInfo
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- CN114131996A CN114131996A CN202111340885.6A CN202111340885A CN114131996A CN 114131996 A CN114131996 A CN 114131996A CN 202111340885 A CN202111340885 A CN 202111340885A CN 114131996 A CN114131996 A CN 114131996A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 36
- 230000009471 action Effects 0.000 claims abstract description 9
- 239000000758 substrate Substances 0.000 claims abstract description 5
- 238000001125 extrusion Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000001175 rotational moulding Methods 0.000 description 1
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- 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-sized left and right half-die closing and locking mechanism, which comprises: 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 base plate, 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 air 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 installed on a left sliding block of the finger cylinder through a first screw, and the right half die is installed on a right sliding block of the finger cylinder through a second screw; the finger cylinder is fixed on the substrate through a third screw. The invention has the advantages of small volume, small mold clamping force, large locking force and high action speed.
Description
Technical Field
The invention belongs to the technical field of die assembly of left and right half dies, and particularly relates to a small-sized die assembly locking mechanism of the left and right half dies.
Background
In many devices, a modular mold is used, which requires a mold closing and locking mechanism. The mold closing and locking system mostly adopts bolts, a hydraulic system, a motor screw system, a large-size cylinder and the like as power sources.
For example, in a mold closing and locking device of a rotational molding mold disclosed in patent CN203418676U, a bolt and a nut are respectively installed on two half molds, the bolt is screwed by an electric or pneumatic screwdriver after mold closing, and the bolt needs to be loosened by the electric or pneumatic screwdriver before mold opening. The mechanism is inconvenient for automatic continuous operation of equipment.
According to the patent CN202427843U mold closing and locking device, after an upper mold and a lower mold are closed, a plurality of I-shaped pull rods are arranged in mold clamping grooves to lock the molds. The H-shaped pull rod of the mechanism is easy to wear and block, is not beneficial to automatic continuous operation, and is easy to have the problem of large gap of the die after the H-shaped pull rod is worn.
In a high-pressure forming mold locking mechanism in patent CN2561536Y, after a mold is closed by an oil cylinder, the other oil cylinder pulls an upright post to prop against the mold, so that locking is realized. The mechanism needs 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, slow action speed and easy oil leakage; the motor lead screw system has large volume, slow action speed, large mold clamping force and high cost; the large-size cylinder has large volume, large mold clamping force and slow action speed. These systems are not suitable for applications where small equipment size, low clamping force (safety and anti-pinch), fast operation speed and low cost are required.
Disclosure of Invention
The technical problem solved by the invention is as follows: the defects of the prior art are overcome, and the small-sized left and right half die closing and locking mechanism has the advantages of small size, small die closing force (safety and clamping injury prevention), large locking force, high action speed and low cost.
The purpose of the invention is realized by the following technical scheme: a small-sized left and right half mold closing and locking mechanism comprises: 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 base plate, 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 air cylinder is fixed on the substrate through a fifth screw; one end of the guide sliding block is connected with a piston for implementing a 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 a left sliding block of the finger cylinder through a first screw, and the right half die is connected with a 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 mold and the right half mold are closed, the groove formed on the V-shaped block clamps the convex part on the left half mold and the convex part on the right half mold.
Among the half mould compound die locking mechanism about the aforesaid is small-size, still include: a control system; the control system controls the airflow direction of compressed air introduced into the double-column cylinder to realize the extension or retraction of the piston of the double-column cylinder and the extension and retraction of the V-shaped block.
In the small-sized left and right half-die 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 introduced into the double-column air cylinder.
In the small-sized left and right half-die closing and locking mechanism, the control system controls the airflow direction of compressed air introduced into the finger cylinder to realize the opening or closing of the two sliding blocks of the finger cylinder, and the die opening and closing actions of the left half die and the right half die are controlled.
In the small-sized left and right half-die closing and locking mechanism, the control system can adjust the speed and the clamping force for closing the left half die and the right half die by adjusting the flow rate and the pressure of compressed air introduced into the finger air cylinder.
In the small-sized left and right half-mold closing and locking mechanism, the included angle of the groove formed by the V-shaped block, namely the working surface, 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 and the materials of 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-sized left and right half-mold closing and locking mechanism, when the left half mold and the right half mold are closed and the V-shaped block is clamped on the left half mold and the right half mold, 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, the V-shaped block, the left half mould and the right half mould are in a self-locking state, the left half mould and the right half mould apply any extrusion force to the V-shaped block, the V-shaped block cannot roll back, and the V-shaped block can be ensured to be reliably locked to the left half mould and the right half mould; 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 working continuity can be realized.
Compared with the prior art, the invention has the following beneficial effects:
(1) the mechanism has small volume and can realize the miniaturization of equipment; two cylinders are used as a power system, so that the cost is greatly reduced, and the automation of the 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, good intrinsic safety, low requirements on a control system and a protection system, convenience for reducing the cost and improving 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 refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic diagram of the mechanism of the present invention;
FIG. 2 is a view showing a structure of a V-shaped block;
FIG. 3 is a view of the left and right mold halves;
FIG. 4 is a state diagram of the V-block locking the left and right mold halves;
fig. 5 is a schematic view of the left and right mold halves under stress.
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 the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Fig. 1 is a schematic diagram of the mechanism of the present invention. As shown in fig. 1, the small-sized left and right mold half clamping and locking mechanism includes: the device comprises a left half die 110, a right half die 120, a finger cylinder 2, a V-shaped block 3, a guide slider 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 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 implementing 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 module 110 is connected with a left sliding block of the finger cylinder 2 through a first screw 7, and the right half module 120 is connected with a 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 mold and the right half mold are closed, the groove formed by the V-shaped block 3 clamps the convex part on the left half mold and the convex part on the right half mold.
The double-column 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 fixed with the V-shaped block 3 through a sixth screw 13. The control system controls the direction of the air flow of compressed air introduced into the double-column cylinder to realize the extension or retraction of the piston of the double-column cylinder and realize the extension and retraction of the V-shaped block. The movement speed and the thrust of the V-shaped block (the double-column cylinder piston) can be adjusted by adjusting the flow rate and the pressure of compressed air introduced into the double-column cylinder.
The left half die 1 and the right half die 1 are fixed on two sliding blocks of the finger cylinder 2 through a first screw 7 and a second screw 8, and the finger cylinder 2 is fixed on the substrate 6 through a third screw 10. The control system controls the direction of the air flow of compressed air introduced into the finger cylinder to realize the opening or closing of the two sliding blocks of the finger cylinder, and realizes the control of the die opening and die closing actions of the left half die and the right half die. The mold closing speed and the clamping force of the left half mold and the right half mold (the finger cylinder slide block) can be adjusted by adjusting the flow rate and the pressure of compressed air introduced into the finger cylinder.
As shown in fig. 2 and 4, the included angle of the working surface of the V-block is α. And calculating the maximum self-locking angle of the V-shaped block and the left and right half-mould materials according to the sliding friction coefficient of the V-shaped block and the left and right half-mould materials, wherein alpha is 2 times of the maximum self-locking angle of the V-shaped block and the left and right half-mould materials. When the left and right half dies are closed and the V-shaped block is clamped on the left and right half dies (as shown in figure 3), the contact part of the V-shaped block and the left and right half dies is at the maximum self-locking angle. Under the stress state, the V-shaped block, the left half mould and the right half mould are in a self-locking state, the left half mould and the right half mould apply any extrusion force to the V-shaped block, the V-shaped block cannot roll back, and the V-shaped block can be ensured to reliably lock the left half mould and the right half mould. Meanwhile, the V-shaped block cannot be clamped on the left half die and the right half die and cannot retract due to the fact that the V-shaped block and the left half die are located at the maximum self-locking angle, and work consistency can be achieved.
The mechanism working principle and the working process are as follows:
1) the initial state of the mechanism is as follows: the V-shaped block (double-column cylinder piston) retracts, and the left half module and the right half module (finger cylinder slide block) are opened.
2) Die assembly of a left half die and a right half die: the V-shaped block (double-column cylinder piston) keeps a retraction state, and the left half die and the right half die (finger cylinder slide block) are folded.
3) Locking a left half die and a right half die: the V-shaped block (double-column cylinder piston) extends out, the V-shaped block locks the left half die and the right half die (finger cylinder slide block) to keep a closed state.
4) Opening the left half die and the right half die: the V-shaped block (double-column cylinder piston) retracts, after the V-shaped block is unlocked, the left half module and the right half module (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 stress analysis. The right half die is stressed as shown in figure 5. N is extrusion force of a V-shaped block on the right half die, and the stress direction is vertical to the inclined plane of the V-shaped block V-shaped groove; n1 is the extrusion force of the left half mold on the right half mold, and the stress direction is vertical 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 die, and the stress direction is parallel to the V-shaped surface of the V-shaped groove.
The right half-die is stressed in balance, and the following results are obtained:
in the N direction: N-N1 cos (alpha/2)
The conditions under which the right half mold does not automatically slide toward the large end of the V-shaped groove in the f direction are (μ is a 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 opposite direction of f is larger than the maximum sliding friction force, and when the difference between the component force of the extrusion force of the left half die in the opposite direction of f and the maximum sliding friction force is larger than the thrust of the double-column cylinder, the right half die can slide to 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 alpha is 2Arctan mu, the component force of the extrusion force of the left half die on the right half die in the direction opposite to f is equal to the sliding friction force, the extrusion force of the left half die on the right half die cannot cause the right half die to slide in the V-shaped groove no matter the extrusion force of the left half die is large or small, and the V-shaped block can reliably lock the left half die and the right half die and can be easily retracted to realize unlocking (cannot be blocked and cannot be pulled back).
The mechanism has small volume and can realize the miniaturization of equipment; two cylinders are used as a power system, so that the cost is greatly reduced, and the automation of the 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, good intrinsic safety, low requirements on a control system and a protection system, convenience for reducing the cost and improving the working efficiency of equipment.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make variations and modifications of the present invention without departing from the spirit and scope of the present invention by using the methods and technical contents disclosed above.
Claims (7)
1. The utility model provides a half mould compound die locking mechanism about small-size which characterized in that includes: 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 content of the first and second substances,
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 a left sliding block of the finger cylinder (2) through a first screw (7), and the right half die (120) is connected with a right sliding block of the finger cylinder (2) through a second screw (8);
the finger cylinder (2) is fixed on the substrate (6) through a third screw (10);
when the left half mould and the right half mould are closed, the groove arranged on the V-shaped block (3) clamps the convex part on the left half mould and the convex part on the right half mould.
2. The miniature left and right half mold clamp locking mechanism of claim 1 further comprising: a control system; the control system controls the airflow direction of compressed air introduced into the double-column cylinder (5) to realize the extension or retraction of the piston of the double-column cylinder (5) and realize the extension and retraction of the V-shaped block (3).
3. The miniature left and right half mold clamping and locking mechanism of 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 introduced into the double-column air cylinder.
4. The miniature left and right half mold clamping and locking mechanism of claim 2, wherein: the control system controls the airflow direction of compressed air introduced into the finger cylinder (2) to realize the opening or closing of the two sliding blocks of the finger cylinder (2) and control the die opening and closing actions of the left half die and the right half die.
5. The miniature left and right half mold clamping and locking mechanism of claim 2, wherein: the control system can adjust the speed and the clamping force of the die assembly of the left half die and the right half die by adjusting the flow rate and the pressure of compressed air introduced into the finger air cylinder (2).
6. The miniature left and right half mold clamping and locking mechanism of claim 1, wherein: the included angle of the groove formed in the V-shaped block (3), namely the working surface, is alpha, the maximum self-locking angle of the left half mould and the right half mould is calculated according to the sliding friction coefficient of the V-shaped block and the materials of the left half mould and the right half mould, and the alpha is 2 times of the maximum self-locking angle of the left half mould and the right half mould.
7. The miniature left and right half mold clamping and locking mechanism of claim 6, wherein: when the left half mold and the right half mold are closed and the V-shaped block is clamped on the left half mold and the right half mold, 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, the V-shaped block, the left half mould and the right half mould are in a self-locking state, the left half mould and the right half mould apply any extrusion force to the V-shaped block, the V-shaped block cannot roll back, and the V-shaped block can be ensured to be reliably locked to the left half mould and the right half mould; 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 working continuity is realized.
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 true CN114131996A (en) | 2022-03-04 |
| CN114131996B 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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| CN (1) | CN114131996B (en) |
Citations (9)
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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 |
| US20120040045A1 (en) * | 2007-06-13 | 2012-02-16 | Vince Ciccone | Wedge-Lock System For Injection Molds |
| 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 |
| US20140017353A1 (en) * | 2011-03-30 | 2014-01-16 | S.I.P.A. Societa' Industrializzazione Progettazione E Automazione S.P.A. | Blow mould |
| 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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-
2021
- 2021-11-12 CN CN202111340885.6A patent/CN114131996B/en active Active
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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 |
| US20120040045A1 (en) * | 2007-06-13 | 2012-02-16 | Vince Ciccone | Wedge-Lock System For Injection Molds |
| US20140017353A1 (en) * | 2011-03-30 | 2014-01-16 | S.I.P.A. Societa' Industrializzazione Progettazione E Automazione S.P.A. | Blow mould |
| 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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| Title |
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|---|---|
| CN114131996B (en) | 2023-12-12 |
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