CN213440982U

CN213440982U - Servo control device of energy-saving injection molding machine of variable pump

Info

Publication number: CN213440982U
Application number: CN202022339072.2U
Authority: CN
Inventors: 俞永康
Original assignee: Ningbo Haiying Plastic Machinery Manufacturing Co ltd
Current assignee: Ningbo Haiying Plastic Machinery Manufacturing Co ltd
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-06-15
Anticipated expiration: 2030-10-20

Abstract

The utility model discloses a servo control device of an energy-saving injection molding machine of a variable pump, which comprises a lead screw, wherein a servo motor is fixedly arranged on the lead screw, the variable pump is fixedly arranged below the servo motor, and an oil pipe is fixedly arranged on the right side of the variable pump; be provided with the damping post, the inside movable mounting of damping post has the piston post, when variable pump work vibration, piston post up-and-down motion extrusion air cavity, the air cavity passes through glib talker mouth intercommunication with the oil pocket, make the oil in the oil cavity come back and forth motion in air cavity and oil pocket, alleviate the vibration that variable pump motion produced, the effect of damping has been played, make variable pump operating condition more stable, thereby the working life of variable pump has been improved, install planetary reducer, planetary reducer has also reduced servo motor's inertia for servo motor deceleration's in-process, servo motor's work load has been reduced, servo motor has been protected, servo motor's life has been improved.

Description

Servo control device of energy-saving injection molding machine of variable pump

Technical Field

The utility model relates to an injection molding machine technical field specifically is an energy-conserving injection molding machine servo control device of variable pump.

Background

The variable pump injection molding machine achieves the purpose of power saving by changing the discharge capacity of the hydraulic pump under the condition that the rotating speed is not changed, and meanwhile, the load of the motor can also be changed along with the discharge capacity.

The variable pump injection molding machine has good energy-saving performance, but also has some drawbacks simultaneously, the pumping power of variable pump is in undulant state, therefore running state is less than constant delivery pump stability, the vibration of production is bigger, can make the working life of variable pump lower, servo control device is controlling the motion state of variable pump, but servo motor can influence transmission efficiency because of inertia in the motion process, the energy consumption increases, also make mechanical work load bigger simultaneously, influence machine working life.

Therefore, the servo control device of the variable pump energy-saving injection molding machine is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an energy-conserving injection molding machine servo control device of variable pump installs the damping protective sheath on the base of variable pump, installs the damping post in the below of variable pump simultaneously, reduces the vibration for the variable pump operation is more stable, installs planetary reducer in servo motor's one end simultaneously, offsets the inertia that reduces servo motor, with the problem of proposing in solving above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a servo control device of an energy-saving injection molding machine of a variable pump comprises a lead screw, wherein a servo motor is fixedly mounted on the lead screw, a variable pump is fixedly mounted below the servo motor, an oil line pipe is fixedly mounted on the right side of the variable pump, a box body is fixedly mounted on the right side of the oil line pipe, a sleeve is fixedly mounted below the variable pump, bases are fixedly mounted on both sides of the bottom of the variable pump, a fixed plate is connected between the two groups of bases, a shock absorption column is fixedly mounted at the middle position of the fixed plate, an encoder is fixedly mounted on the left side of the servo motor, a planetary reducer is fixedly mounted on the right side of the servo motor, a servo driver is fixedly mounted above the box body, a force output shaft is movably mounted at the left end of the planetary reducer, an outer shell is fixedly mounted on the upper portion and the lower portion of the planetary reducer, and a force input shaft is fixedly, the right side fixed mounting of output shaft has the oil blanket seal cover, the right side fixed mounting of oil blanket seal cover has the output shaft bearing, the right side fixed mounting of output shaft bearing has the planet wheel, the right side bottom fixed mounting of shock attenuation post has the governing valve, the inside top fixed mounting of shock attenuation post has the sealing washer, the inside intermediate position department movable mounting of shock attenuation post has the piston post, the air cavity has been seted up to the both sides of piston post, the oil pocket has been seted up to the both sides of air cavity, the bottom fixed mounting of piston post has the piston, the choke has been seted up to the inner wall bottom of air cavity, servo motor, variable pump, encoder, planetary reducer and servo driver all with external power source electric connection.

By adopting the technical scheme, the damping device is provided with the damping column, the piston column is movably arranged in the damping column, when the variable displacement pump works and vibrates, the piston column moves up and down to extrude the air cavity, the air cavity is communicated with the oil cavity through the oil nozzle opening, the oil in the oil cavity moves back and forth in the air cavity and the oil cavity, the vibration generated by the movement of the variable displacement pump is relieved, the vibration reduction effect is achieved, the working state of the variable displacement pump is more stable, thereby prolonging the service life of the variable pump, and meanwhile, an encoder is arranged on one side of the servo motor, a planetary reducer is fixedly arranged on the other side of the servo motor, the encoder can feed back the working state of the servo motor to the servo driver in real time, therefore, the motion state of the servo motor is more accurately adjusted, meanwhile, the inertia of the servo motor is reduced when the planetary reducer decelerates the servo motor, the servo motor is protected, and the service life of the servo motor is prolonged.

Preferably, the sleeve pipe is provided with two sets ofly altogether, and two sets of sleeve pipes parallel mount are in the below of variable pump, and two sets of bases are fixed mounting respectively on two sets of sleeve pipes, and equal fixed mounting has the damping cover on two sets of bases.

Through adopting above-mentioned technical scheme, the variable pump cup joints on the sleeve pipe through two sets of bases, installs the damping cover on the base, improves the damping ability of variable pump.

Preferably, the top end of the piston column is fixedly arranged at the middle position of the bottom of the variable displacement pump, and the piston column moves up and down in the shock absorption column.

Through adopting above-mentioned technical scheme, the variable displacement pump produces vibration at the during operation to drive the piston post and move about from top to bottom in the inside of damping post, piston post up-and-down motion extrudees the air cavity, and the air cavity passes through glib talker mouth intercommunication with the oil pocket, makes the oil of oil intracavity come the return motion in air cavity and oil pocket, alleviates the vibration that the variable displacement pump motion produced, has played the effect of damping.

Preferably, the bottom of the piston is fixedly provided with a sealing ring, the oil nozzle ports are provided with two groups, the two groups of oil nozzle ports are respectively arranged on two sides of the bottom of the inner wall of the air cavity, and the oil cavity is communicated with the air cavity through the oil nozzle ports.

Through adopting above-mentioned technical scheme, damping post is inside to be encapsulated situation, and the air cavity passes through glib talker mouth intercommunication with the oil pocket, and when the piston post downstream, oil gushes into in the oil pocket under the extrusion, and the air cavity is the negative pressure, and the oil pocket is the malleation, and then the oil of extrusion oil intracavity outwards gushes out, and the repetitive motion to absorb the energy that variable pump vibration produced, play the shock attenuation effect.

Preferably, the output shaft is in sealing connection with the outer shell through an oil seal sealing sleeve, and the piston column is in sealing connection with the air cavity through a sealing ring.

By adopting the technical scheme, the air tightness of the planetary reducer and the interior of the vibration damping column is ensured, so that the planetary reducer and the vibration damping column can work normally.

Preferably, the encoder, the planetary reducer and the servo driver form a closed loop.

By adopting the technical scheme, the servo driver drives the servo motor to move, and the encoder can immediately feed back the working state of the servo motor to the servo driver, so that the servo driver can more accurately adjust the moving state of the servo motor.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the variable pump is provided with the vibration damping column, the piston column is movably arranged in the vibration damping column, when the variable pump works and vibrates, the piston column moves up and down to extrude the air cavity, the air cavity is communicated with the oil cavity through the oil nozzle port, so that oil in the oil cavity moves back and forth in the air cavity and the oil cavity, vibration generated by movement of the variable pump is relieved, a vibration damping effect is achieved, the working state of the variable pump is more stable, and the working life of the variable pump is prolonged;

2. the planetary reducer is arranged, the inertia of the servo motor is reduced in the process of reducing the speed of the servo motor, the working load of the servo motor is reduced, the servo motor is protected, and the service life of the servo motor is prolonged.

Drawings

FIG. 1 is a schematic view of the main structure of the present invention;

fig. 2 is a front view of the present invention;

fig. 3 is a schematic structural view of the planetary reducer of the present invention;

fig. 4 is a schematic view of the shock-absorbing column structure of the present invention.

In the figure: 1. a lead screw; 2. a servo motor; 3. a box body; 4. an oil line pipe; 5. a variable displacement pump; 6. a base; 7. a sleeve; 8. a damping post; 9. an encoder; 10. a planetary reducer; 11. a servo driver; 12. oil seal sealing sleeves; 13. a thrust shaft bearing; 14. a planet wheel; 15. an input shaft; 16. an outer housing; 17. a force output shaft; 18. a seal ring; 19. a piston post; 20. an oil chamber; 21. an oil nozzle opening; 22. adjusting a valve; 23. a piston; 24. an air cavity.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 4, the present invention provides a technical solution: a servo control device of a variable pump energy-saving injection molding machine is shown in figures 1 to 4 and comprises a lead screw 1, a servo motor 2 is fixedly installed on the lead screw 1, a variable pump 5 is fixedly installed below the servo motor 2, an oil line pipe 4 is fixedly installed on the right side of the variable pump 5, a box body 3 is fixedly installed on the right side of the oil line pipe 4, a sleeve pipe 7 is fixedly installed below the variable pump 5, bases 6 are fixedly installed on two sides of the bottom of the variable pump 5, a fixing plate is connected between the two groups of bases 6, a damping column 8 is fixedly installed in the middle position of the fixing plate, an encoder 9 is fixedly installed on the left side of the servo motor 2, a planetary reducer 10 is fixedly installed on the right side of the servo motor 2, a servo driver 11 is fixedly installed above the box body 3, a force output shaft 17 is movably installed at the left end of the planetary reducer 10, and an outer shell 16 is fixedly installed, the right side fixed movable mounting of planetary reducer 10 has input shaft 15, the right side fixed mounting of output shaft 17 has oil blanket seal cover 12, the right side fixed mounting of oil blanket seal cover 12 has output shaft bearing 13, the right side fixed mounting of output shaft bearing 13 has planet wheel 14, the right side bottom fixed mounting of damping post 8 has governing valve 22, the inside top fixed mounting of damping post 8 has sealing washer 18, the inside intermediate position department movable mounting of damping post 8 has piston post 19, air cavity 24 has been seted up to the both sides of piston post 19, oil pocket 20 has been seted up to the both sides of air cavity 24, the bottom fixed mounting of piston post 19 has piston 23, oil nozzle 21 has been seted up to the inner wall bottom of air cavity 24, servo motor 2, variable pump 5, encoder 9, planetary reducer 10 and servo driver 11 all with external power source electric connection.

By adopting the technical scheme, the damping column 8 is arranged, the piston column 19 is movably arranged in the damping column 8, when the variable pump 5 vibrates during working, the piston column 19 moves up and down to extrude the air cavity 24, the air cavity 24 is communicated with the oil cavity 20 through the oil nozzle 21, so that the oil in the oil cavity 20 moves back and forth in the air cavity 24 and the oil cavity 20, the vibration generated by the movement of the variable pump 5 is relieved, the damping effect is achieved, the working state of the variable pump 5 is more stable, the working life of the variable pump 5 is prolonged, the encoder 9 is arranged on one side of the servo motor 2, the planetary reducer 10 is fixedly arranged on the other side of the servo motor 2, the encoder 9 can immediately feed back the working state of the servo motor 2 to the servo driver 11, the movement state of the servo motor 2 is more accurately adjusted, and meanwhile, the inertia of the servo motor 2 is reduced by the planetary reducer 10 in the process of reducing the speed of the servo motor 2, the servo motor 2 is protected, and the service life of the servo motor 2 is prolonged.

Specifically, as shown in fig. 1, two sets of sleeves 7 are provided, two sets of sleeves 7 are installed below the variable displacement pump 5 in parallel, two sets of bases 6 are respectively and fixedly installed on the two sets of sleeves 7, and damping sleeves are fixedly installed on the two sets of bases 6.

Through adopting above-mentioned technical scheme, variable pump 5 cup joints on sleeve pipe 7 through two sets of bases 6, installs the damping cover on base 6, improves variable pump 5's damping ability.

Specifically, as shown in fig. 1 and 4, the top end of the piston column 19 is fixedly installed at the middle position of the bottom of the variable displacement pump 5, and the piston column 19 moves up and down inside the damping column 8.

By adopting the technical scheme, the variable displacement pump 5 vibrates during working, so that the piston column 19 is driven to move up and down in the vibration damping column 8, the piston column 19 moves up and down to extrude the air cavity 24, the air cavity 24 is communicated with the oil cavity 20 through the oil nozzle opening 21, oil in the oil cavity 20 moves back and forth in the air cavity 24 and the oil cavity 20, vibration generated by movement of the variable displacement pump 5 is relieved, and the vibration damping effect is achieved.

Specifically, as shown in fig. 4, the bottom of the piston 23 is fixedly provided with the sealing ring 18, two sets of oil nozzle ports 21 are provided, the two sets of oil nozzle ports 21 are respectively provided at two sides of the bottom of the inner wall of the air cavity 24, and the oil cavity 20 and the air cavity 24 are communicated with each other through the oil nozzle ports 21.

Through adopting above-mentioned technical scheme, the damping post 8 is inside to be sealed state, and air cavity 24 and oil pocket 20 pass through nozzle 21 intercommunication, and when piston post 19 downstream, oil gushes into in oil pocket 20 under the extrusion, and air cavity 24 is the negative pressure, and oil pocket 20 is the malleation, and then the oil in the extrusion oil pocket 20 outwards gushes out, and the repetitive motion to absorb the energy that variable pump 5 vibration produced, play the shock attenuation effect.

Specifically, as shown in fig. 3 and 4, the output shaft 17 is hermetically connected with the outer housing 16 through the oil-sealed sealing sleeve 12, and the piston column 19 is hermetically connected with the air cavity 24 through the sealing ring 18.

By adopting the technical scheme, the air tightness of the planetary reducer 10 and the interior of the vibration damping column 8 is ensured, so that the planetary reducer 10 and the vibration damping column 8 can work normally.

Specifically, as shown in fig. 2, the encoder 9, the servo motor 2, and the servo driver 11 form a closed loop.

By adopting the technical scheme, the servo driver 11 drives the servo motor 2 to move, and the encoder 9 can feed back the working state of the servo motor 2 to the servo driver 11 in real time, so that the servo driver 11 can more accurately adjust the movement state of the servo motor 2.

The working principle is as follows: after a worker inspects a machine, a switch is turned on, the worker controls a servo driver 11 through an operation desk, the servo driver 11 drives a servo motor 2 to move, the servo motor 2 controls the working state of a variable pump 5, an encoder 9 can immediately feed back the working state of the servo motor 2 to the servo driver 11, so that the servo driver 11 can more accurately adjust the movement state of the servo motor 2, meanwhile, a planetary reducer 10 reduces the inertia of the servo motor 2 in the process of reducing the speed of the servo motor 2, protects the servo motor 2, prolongs the service life of the servo motor 2, the variable pump 5 vibrates during working, so that a piston column 19 is driven to move up and down in a damping column 8, the piston column 19 moves up and down to extrude an air cavity 24, the air cavity 24 is communicated with an oil cavity 20 through an oil nozzle 21, and oil in the oil cavity 20 moves back and forth in the air cavity 24 and the oil cavity 20, the vibration generated by the movement of the variable displacement pump 5 is relieved, and the vibration reduction effect is achieved.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an energy-conserving injection molding machine servo control device of variable pump, includes lead screw (1), its characterized in that: the automatic feeding device is characterized in that a servo motor (2) is fixedly mounted on the lead screw (1), a variable pump (5) is fixedly mounted below the servo motor (2), an oil line pipe (4) is fixedly mounted on the right side of the variable pump (5), a box body (3) is fixedly mounted on the right side of the oil line pipe (4), a sleeve (7) is fixedly mounted below the variable pump (5), bases (6) are fixedly mounted on two sides of the bottom of the variable pump (5), a fixed plate is connected between the two groups of bases (6), a damping column (8) is fixedly mounted at the middle position of the fixed plate, an encoder (9) is fixedly mounted on the left side of the servo motor (2), a planetary reducer (10) is fixedly mounted on the right side of the servo motor (2), a servo driver (11) is fixedly mounted above the box body (3), and a force output shaft (17) is movably mounted at the left end of the planetary reducer (10), the upper portion and the lower portion of the planetary reducer (10) are both fixedly provided with an outer shell (16), the right side of the planetary reducer (10) is fixedly and movably provided with an input shaft (15), the right side of the output shaft (17) is fixedly provided with an oil seal sealing sleeve (12), the right side of the oil seal sealing sleeve (12) is fixedly provided with an output shaft bearing (13), the right side of the output shaft bearing (13) is fixedly provided with a planet wheel (14), the right side bottom of the damping column (8) is fixedly provided with an adjusting valve (22), the inner top end of the damping column (8) is fixedly provided with a sealing ring (18), the inner middle position of the damping column (8) is movably provided with a piston column (19), air cavities (24) are formed in two sides of the piston column (19), oil cavities (20) are formed in two sides of the air cavities (24), and a piston (23) is fixedly arranged at the, an oil nozzle opening (21) is formed in the bottom of the inner wall of the air cavity (24), and the servo motor (2), the variable pump (5), the encoder (9), the planetary reducer (10) and the servo driver (11) are electrically connected with an external power supply.

2. The servo control device of the variable pump energy-saving injection molding machine according to claim 1, characterized in that: the two sets of sleeves (7) are arranged together, the two sets of sleeves (7) are arranged below the variable pump (5) in parallel, the two sets of bases (6) are fixedly arranged on the two sets of sleeves (7) respectively, and the two sets of bases (6) are fixedly provided with damping sleeves.

3. The servo control device of the variable pump energy-saving injection molding machine according to claim 1, characterized in that: the top end of the piston column (19) is fixedly arranged at the middle position of the bottom of the variable pump (5), and the piston column (19) moves up and down in the damping column (8).

4. The servo control device of the variable pump energy-saving injection molding machine according to claim 1, characterized in that: the bottom of the piston (23) is fixedly provided with a sealing ring (18), the oil nozzle openings (21) are arranged in two groups, the two groups of oil nozzle openings (21) are respectively arranged on two sides of the bottom of the inner wall of the air cavity (24), and the oil cavity (20) is communicated with the air cavity (24) through the oil nozzle openings (21).

5. The servo control device of the variable pump energy-saving injection molding machine according to claim 1, characterized in that: the output shaft (17) is in sealing connection with the outer shell (16) through an oil seal sealing sleeve (12), and the piston column (19) is in sealing connection with the air cavity (24) through a sealing ring (18).

6. The servo control device of the variable pump energy-saving injection molding machine according to claim 1, characterized in that: the encoder (9), the planetary reducer (10) and the servo driver (11) form a closed loop.