CN210501267U - Electro-hydraulic combined type mold locking mechanism of injection molding machine - Google Patents
Electro-hydraulic combined type mold locking mechanism of injection molding machine Download PDFInfo
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- CN210501267U CN210501267U CN201921430171.2U CN201921430171U CN210501267U CN 210501267 U CN210501267 U CN 210501267U CN 201921430171 U CN201921430171 U CN 201921430171U CN 210501267 U CN210501267 U CN 210501267U
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Abstract
The utility model relates to an injection molding machine electricity liquid combined type clamping mechanism belongs to injection molding machine technical field. In the low-pressure quick die assembly stage, low-pressure hydraulic oil is introduced into one side of each of the four oil cylinders, so that the compression pull rod does not move; meanwhile, the servo motor A and the lead screw drive the toggle rod type die closing mechanism to move, so that the die moves accurately at a high speed; when the distance between the female die and the male die of the die is 1-2 mm, high-pressure hydraulic oil is introduced into the other sides of the four oil cylinders, and the oil cylinders drive the four pull rods to move for 5-20 mm (the distance is related to the rigidity of the die) to complete die locking. The utility model discloses can compromise the advantage that full electric injection molding machine compound die positioning accuracy is high, simultaneously, the bearing capacity demand of toggle rod formula locking mechanism to drive arrangement-servo motor and lead screw reduces, can adopt less power servo motor and the less lead screw of specification, has reduced manufacturing, the maintenance cost of full electric injection molding machine.
Description
Technical Field
The utility model relates to an injection molding machine electricity liquid combined type clamping mechanism belongs to injection molding machine technical field.
Background
The common product at present is full-electric injection molding machine, adopts servo motor + lead screw drive toggle rod formula locking mechanism. Due to the fact that the rigidity of the toggle rod type mold closing mechanism is too strong, when the mold is locked at high pressure, the toggle rod type mold closing mechanism gives a large acting force to the screw rod, and the requirement on the driving power of the servo motor is high; the screw rod belongs to a high-precision part, is high in manufacturing cost and not suitable for being used in a severe environment, and is lowered in precision due to the fact that strong acting force is applied for a long time, the service life is influenced, and the mold locking accuracy of the full-electric injection molding machine is lowered.
SUMMERY OF THE UTILITY MODEL
The utility model provides an electro-hydraulic combined type clamping mechanism of an injection molding machine, which aims to solve the problem that a toggle rod type clamping mechanism of a full electric injection molding machine generates high acting force on a driving part, namely a screw rod.
For solving the technical problem the utility model discloses the technical scheme who adopts is: the electro-hydraulic combined type mold locking mechanism of the injection molding machine comprises an oil cylinder, a fixed mold plate, a rotation stopping ring, a movable mold plate, a rear connecting rod, a front connecting rod, a thrust balancing rod, a tail plate, a pull rod, a servo motor A, a lead screw, a small connecting rod, a thrust nut and a mold;
the pull rods are arranged side by side, and the movable template and the fixed template are provided with holes for the pull rods to pass through so that the movable template and the fixed template can axially move relative to the pull rods; the tail plate, the movable template and the fixed template are arranged in parallel and are sequentially arranged on the pull rod;
the oil cylinders are fixedly arranged on the fixed die plate, the oil cylinders correspond to the pull rods one by one, and the end parts of the pull rods are connected with piston rods of the oil cylinders;
the rotation stopping ring is arranged at the connecting part of the fixed die plate and the pull rod, so that the fixed die plate and the pull rod cannot relatively rotate;
the rear connecting rod, the front connecting rod, the thrust balancing rod, the small connecting rod and the thrust nut form a centrosymmetric toggle rod mechanism; one end of the rear connecting rod is hinged with the movable template through an intermediate shaft, the other end of the rear connecting rod is hinged with the end part of the front connecting rod through the intermediate shaft, and the other end of the front connecting rod is hinged with the tail plate through the intermediate shaft; the middle part of the front connecting rod or the middle part of the rear connecting rod is hinged with the end part of the small connecting rod through the middle shaft, the other end of the small connecting rod is hinged with the thrust balancing rod, and the thrust balancing rod is fixedly connected with the thrust nut; the thrust nut is in threaded connection with the screw rod, and the other end of the screw rod is arranged in the assembling hole of the tail plate and is in running fit with the tail plate; the servo motor A is fixedly arranged on the tail plate and is in driving connection with the screw rod through a transmission mechanism;
the mould is arranged between the movable mould plate and the fixed mould plate, and the mould closing direction of the mould is consistent with the length direction of the pull rod.
Further, the method comprises the following steps: the pull rods are four which are distributed in a rectangular shape.
Further, the method comprises the following steps: the connecting rod assemblies formed by the rear connecting rods, the front connecting rods and the small connecting rods are provided with a plurality of groups, and 2-4 groups are arranged from top to bottom respectively.
Further, the method comprises the following steps: an output shaft of the servo motor A is in driving connection with the screw rod through a synchronous belt A.
Further, the method comprises the following steps: the tail plate is provided with a hole for the pull rod to pass through, so that the tail plate and the pull rod can move axially relative to each other; the die adjusting nut is arranged in an assembling hole of the tail plate and forms rotating fit with the tail plate, and the die adjusting nut is in threaded connection with the pull rod; the servo motor B is fixedly arranged on the tail plate and is in driving connection with the die adjusting nut through a transmission mechanism.
Further, the method comprises the following steps: and an output shaft of the servo motor B is in driving connection with the die adjusting nut through a synchronous belt B.
The utility model has the advantages that: in the low-pressure quick die assembly stage, low-pressure hydraulic oil is introduced into one side of each of the four oil cylinders to press the pull rod to be free from moving; meanwhile, the servo motor A and the lead screw drive the toggle rod type die closing mechanism to move, so that the die moves accurately at a high speed; when the distance between the female die and the male die of the die is 1-2 mm, high-pressure hydraulic oil is introduced into the other sides of the four oil cylinders, and the oil cylinders drive the four pull rods to move for 5-20 mm (the distance is related to the rigidity of the die) to complete die locking. The utility model discloses can compromise the advantage that full electric injection molding machine compound die positioning accuracy is high, simultaneously, the bearing capacity demand of toggle rod formula locking mechanism to drive arrangement-servo motor and lead screw reduces, can adopt less power servo motor and the less lead screw of specification, has reduced manufacturing, the maintenance cost of full electric injection molding machine.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a right side view of fig. 1.
Fig. 3 is a left side view of fig. 1.
Parts, positions and numbers in the drawings: the device comprises an oil cylinder 1, a fixed template 2, a rotation stopping ring 3, a movable template 4, a rear connecting rod 5, a front connecting rod 6, a thrust balancing rod 7, a tail plate 8, a synchronous belt B9, a servo motor B10, a synchronous belt A11, a pull rod 12, a servo motor A13, a mold adjusting nut 14, a screw rod 15, a small connecting rod 16, a thrust nut 17 and a mold 18.
Detailed Description
The present invention will be further explained with reference to the drawings and the embodiments.
As shown in fig. 1 to 3, the present invention includes an oil cylinder 1, a fixed mold plate 2, a rotation stopping ring 3, a movable mold plate 4, a rear connecting rod 5, a front connecting rod 6, a thrust balancing rod 7, a tail plate 8, a pull rod 12, a servo motor a13, a lead screw 15, a small connecting rod 16, a thrust nut 17, and a mold 18; the pull rods 12 are arranged side by side, and the movable template 4 and the fixed template 2 are both provided with holes for the pull rods 12 to pass through so that the movable template and the fixed template can axially move relative to the pull rods 12; the tail plate 8, the movable template 4 and the fixed template 2 are arranged in parallel and are sequentially arranged on the pull rod 12; for a reliable construction, the tension rods 12 are four in rectangular arrangement.
The oil cylinders 1 are fixedly arranged on the fixed die plate 2, the oil cylinders 1 correspond to the pull rods 12 one by one, and the end parts of the pull rods 12 are connected with piston rods of the oil cylinders 1. The rotation stop ring 3 is provided at a connecting portion of the stationary platen 2 and the tie bar 12 so that relative rotation cannot be generated between the stationary platen 2 and the tie bar 12. The anti-rotation structure can adopt a mode that a groove is matched with a clamping block, so that the four pull rods 12 do not rotate in the die adjusting process.
Can adopt fixed connection structure between tailboard 8 and pull rod 12, nevertheless be applicable to different thickness's mould 18 for the convenience, the utility model discloses a tailboard 8 installs according to following mode: the tail plate 8 is provided with a hole for the pull rod 12 to pass through, so that the tail plate 8 and the pull rod 12 can move axially relative to each other; the tail plate assembly structure further comprises a servo motor B10 and a die adjusting nut 14, wherein the die adjusting nut 14 is installed in an assembling hole of the tail plate 8 and forms rotating fit with the tail plate 8, and the die adjusting nut 14 is in threaded connection with the pull rod 12; the servo motor B10 is fixedly arranged on the tail plate 8, and the servo motor B10 is in driving connection with the die adjusting nut 14 through a transmission mechanism; in order to make the structure simple and reliable, the transmission structure can be realized by adopting a synchronous belt, and an output shaft of the servo motor B10 is in driving connection with the die adjusting nut 14 through the synchronous belt B9. The synchronous belt B9 surrounds the outside of the integral structure formed by the motor output shaft and the four die adjusting nuts 14 and has a corresponding tooth-shaped structure. Can drive four accent mould nuts 14 synchronous revolution through servo motor B10, through adjusting the screw thread pair of constituteing between mould nut 14 and pull rod 12, will transfer the rotary motion of mould nut 14 into the linear motion of tailboard 8, tailboard 8 linear motion makes movable mould board 4 can the back-and-forth movement, realizes adjusting tailboard 8 and movable mould board 4 position according to mould 18 thickness.
The rear connecting rod 5, the front connecting rod 6, the thrust balancing rod 7, the small connecting rod 16 and the thrust nut 17 form a toggle rod mechanism with central symmetry; one end of the rear connecting rod 5 is hinged with the movable template 4 through an intermediate shaft, the other end of the rear connecting rod is hinged with the end part of the front connecting rod 6 through an intermediate shaft, and the other end of the front connecting rod 6 is hinged with the tail plate 8 through an intermediate shaft; the middle part of the front connecting rod 6 or the middle part of the rear connecting rod 5 is hinged with the end part of the small connecting rod 16 through a middle shaft, the other end of the small connecting rod 16 is hinged with the thrust balancing pole 7, and the thrust balancing pole 7 is fixedly connected with the thrust nut 17; the connecting rod assemblies consisting of the rear connecting rods 5, the front connecting rods 6 and the small connecting rods 16 are arranged in multiple groups, and 2-4 groups are generally arranged at the upper part and the lower part respectively. The thrust nut 17 is in threaded connection with the screw rod 15, and the other end of the screw rod 15 is installed in an assembling hole of the tail plate 8 and forms rotating fit with the tail plate 8; the servo motor A13 is fixedly arranged on the tail plate 8, and the servo motor A13 is in driving connection with the screw rod 15 through a transmission mechanism; for making simple structure reliable, this transmission structure can adopt the hold-in range to realize, and servo motor A13's output shaft passes through hold-in range A11 and is connected with lead screw 15 drive. The servo motor A13 can drive the screw rod 15 to rotate, and the thrust nut 17 converts the rotary motion of the screw rod 15 into the linear motion of the thrust nut 17 through a thread pair formed between the thrust nut 17 and the screw rod 15; the thrust nut 17 moves to drive the small connecting rod 16 to generate rotary motion, and the rotary motion of the small connecting rod 16 drives the rear connecting rod 5 and the front connecting rod 6 to generate rotary motion around respective intermediate shafts respectively; in the process, the position of the tail plate 8 relative to the pull rod 12 is unchanged, and the movement of the rear connecting rod 5 and the front connecting rod 6 enables the movable template 4 to move back and forth, so that the actions of closing and opening the mold are generated.
The mold 18 is installed between the movable platen 4 and the fixed platen 2, and the mold-closing direction of the mold 18 coincides with the longitudinal direction of the tie bar 12.
During implementation, hydraulic oil can be respectively introduced into two sides of the oil cylinder 1 arranged on the fixed die plate 2. In the low-pressure quick die assembly stage, low-pressure hydraulic oil is introduced into one side of each of the four oil cylinders 1, and the piston rods of the oil cylinders 1 press the pull rods 12 (the number of the pull rods is four), so that the positions of the four pull rods 12 are kept consistent; meanwhile, the rear connecting rod 5, the front connecting rod 6, the thrust balancing rod 7, the small connecting rod 16 and the thrust nut 17 form a toggle rod mechanism. Under the drive of a servo motor A13, a synchronous belt A11 and a screw rod 15, the movable template 4 moves fast and accurately to push the mold 18 to be closed. When the distance between the female die and the male die of the die 18 is 1-2 mm, high-pressure hydraulic oil is introduced into the other sides of the four oil cylinders 1, the oil cylinders 1 generate huge force through piston rods to drive the four pull rods 12 to move for 5-20 mm (the distance is related to the die rigidity), and the huge force is transmitted to the die 18 through the pull rods 12, the rear connecting rods 5 and the front connecting rods 6, so that the die 18 is locked. In the process of locking the die 18 at high pressure, the screw rod 15 does not rotate or do not move linearly, and is free from external acting force.
In order to ensure that the stress of the mold 18 is uniform and the deformation is consistent and produce high-quality injection molding parts, a toggle rod type mold closing mechanism part and a rack of an injection molding machine are processed and produced by adopting high-precision CNC, and the quality requirement is strict during equipment. Therefore, the toggle rod type mold clamping mechanism has high precision, so that the movable mold plate 4 can be driven to move without large force in the low-pressure quick mold clamping stage. The servo motor A13 and the screw rod 15 are only used for generating thrust in the low-pressure quick die closing stage, so that great force does not need to be generated, the specifications of the servo motor A13 and the screw rod 15 are reduced, external reaction force on the screw rod 15 is reduced, abrasion is reduced, and the service life is prolonged.
Claims (6)
1. Injection molding machine electricity liquid combined type clamping mechanism, its characterized in that: the device comprises an oil cylinder (1), a fixed template (2), a rotation stopping ring (3), a movable template (4), a rear connecting rod (5), a front connecting rod (6), a thrust balancing rod (7), a tail plate (8), a pull rod (12), a servo motor A (13), a lead screw (15), a small connecting rod (16), a thrust nut (17) and a mold (18);
the pull rods (12) are arranged side by side, and the movable template (4) and the fixed template (2) are respectively provided with a hole for the pull rods (12) to pass through so that the movable template and the fixed template can axially move relative to the pull rods (12); the tail plate (8), the movable template (4) and the fixed template (2) are arranged in parallel and are sequentially arranged on the pull rod (12);
the oil cylinders (1) are fixedly arranged on the fixed template (2), the oil cylinders (1) correspond to the pull rods (12) one by one, and the end parts of the pull rods (12) are connected with piston rods of the oil cylinders (1);
the rotation stopping ring (3) is arranged at the connecting part of the fixed template (2) and the pull rod (12) so that the fixed template (2) and the pull rod (12) can not relatively rotate;
the rear connecting rod (5), the front connecting rod (6), the thrust balancing rod (7), the small connecting rod (16) and the thrust nut (17) form a toggle rod mechanism with central symmetry; one end of the rear connecting rod (5) is hinged with the movable template (4) through an intermediate shaft, the other end of the rear connecting rod is hinged with the end part of the front connecting rod (6) through an intermediate shaft, and the other end of the front connecting rod (6) is hinged with the tail plate (8) through an intermediate shaft; the middle part of the front connecting rod (6) or the middle part of the rear connecting rod (5) is hinged with the end part of the small connecting rod (16) through a middle shaft, the other end of the small connecting rod (16) is hinged with the thrust balancing rod (7), and the thrust balancing rod (7) is fixedly connected with the thrust nut (17); the thrust nut (17) is in threaded connection with the screw rod (15), and the other end of the screw rod (15) is installed in an assembling hole of the tail plate (8) and forms rotating fit with the tail plate (8); the servo motor A (13) is fixedly arranged on the tail plate (8), and the servo motor A (13) is in driving connection with the screw rod (15) through a transmission mechanism;
the mold (18) is installed between the movable mold plate (4) and the fixed mold plate (2), and the mold closing direction of the mold (18) is consistent with the length direction of the pull rod (12).
2. The electro-hydraulic compound clamping mechanism of the injection molding machine according to claim 1, characterized in that: the pull rods (12) are four in rectangular distribution.
3. The electro-hydraulic compound clamping mechanism of the injection molding machine according to claim 1, characterized in that: the connecting rod assemblies formed by the rear connecting rods (5), the front connecting rods (6) and the small connecting rods (16) are provided with a plurality of groups, and 2-4 groups are arranged at the upper part and the lower part respectively.
4. The electro-hydraulic compound clamping mechanism of the injection molding machine according to claim 1, characterized in that: an output shaft of the servo motor A (13) is in driving connection with the screw rod (15) through a synchronous belt A (11).
5. The electro-hydraulic compound mold clamping mechanism of the injection molding machine according to any one of claims 1 to 4, characterized in that: a hole for the pull rod (12) to pass through is formed in the tail plate (8), so that the tail plate (8) and the pull rod (12) can move axially relative to each other; the die adjusting mechanism is characterized by further comprising a servo motor B (10) and a die adjusting nut (14), wherein the die adjusting nut (14) is installed in an assembling hole of the tail plate (8) and forms rotating fit with the tail plate (8), and the die adjusting nut (14) is in threaded connection with the pull rod (12); the servo motor B (10) is fixedly arranged on the tail plate (8), and the servo motor B (10) is in driving connection with the die adjusting nut (14) through a transmission mechanism.
6. The electro-hydraulic compound clamping mechanism of the injection molding machine according to claim 5, characterized in that: an output shaft of the servo motor B (10) is in driving connection with the die adjusting nut (14) through a synchronous belt B (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921430171.2U CN210501267U (en) | 2019-08-30 | 2019-08-30 | Electro-hydraulic combined type mold locking mechanism of injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921430171.2U CN210501267U (en) | 2019-08-30 | 2019-08-30 | Electro-hydraulic combined type mold locking mechanism of injection molding machine |
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| Publication Number | Publication Date |
|---|---|
| CN210501267U true CN210501267U (en) | 2020-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921430171.2U Active CN210501267U (en) | 2019-08-30 | 2019-08-30 | Electro-hydraulic combined type mold locking mechanism of injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210501267U (en) |
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- 2019-08-30 CN CN201921430171.2U patent/CN210501267U/en active Active
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