Electric sliding table carrying pressure actuator

Abstract

The utility model discloses an electric sliding table carrying a pressure actuator, which comprises an electric sliding table and the pressure actuator, one end of the electric sliding table is provided with a first motor, one end of the first motor is provided with a rotating shaft, the rotating shaft is connected with a first screw rod, the first screw rod is sleeved with a sliding block, the sliding block is fixedly connected with a loading table, and the loading table is provided with a pressure actuator. And the loading platform is fixedly connected with the pressure actuator. The sliding block linearly moves back and forth in the direction of the first lead screw, the pressure actuator is moved to a corresponding working point position, the pressure actuator starts to work after entering the working point position, and the hydraulic system is compact in structure, small in size, high in precision and capable of being suitable for various working scenes.

Description

Technical Field

[0001] The utility model relates to the field of linear transmission, in particular to an electric slide table equipped with a pressure actuator. Background Art

[0002] Electric slides are widely used in the field of automated production equipment. Usually, electric slides transfer parts to operating devices or carry operating devices to work points. With the development of industry and the advancement of technology, the requirements for linear slides will become higher and higher.

[0003] In the prior art, the Chinese invention patent publication number is CN109015608A, which discloses a linear motor slide, which directly installs a working device through the mounting holes on the slider. This arrangement is not suitable for work scenarios where the working device needs to apply pressure to the product, such as press fitting or pressure spot welding. Moreover, the conventional motor and the lead screw are connected by couplings and other devices, resulting in the disadvantages of excessive size of the mechanism, low precision and reliability, etc. Therefore, a motor slide equipped with a pressure actuator is needed to solve the above problems. Utility Model Content

[0004] Aiming at the problems that the electric slide in the prior art is large in size and low in precision, and the electric slide directly loaded with a pressure actuator cannot flexibly operate the product, the utility model mainly provides an electric slide equipped with a pressure actuator.

[0005] To achieve the above-mentioned purpose, the utility model provides an electric slide equipped with a pressure actuator, including an electric slide and a pressure actuator, wherein a first motor is provided at one end of the electric slide, a rotating shaft is provided at one end of the first motor, the rotating shaft is connected to a first screw rod, a sliding block is sleeved on the first screw rod, the sliding block is fixedly connected to a loading platform, and the loading platform is fixedly connected to the pressure actuator.

[0006] As an improvement of the present utility model, the rotating shaft of the first motor is provided with a threaded opening, one end of the first screw rod is provided with a threaded column, the cross section of the threaded column is smaller than the cross section of the first screw rod, and the rotating shaft is threadedly connected to the first screw rod.

[0007] As an improvement of the present utility model, the pressure actuator is an electric cylinder, which includes a cylinder body and an ejection block. The cylinder body is fixedly connected to the loading platform, a second motor is provided on the bottom end surface of the cylinder body, a hollow shaft is provided on the output end of the second motor, a driving nut is provided at the end of the hollow shaft away from the second motor, the driving nut is connected to the hollow shaft through a nut mounting sleeve, a second screw rod is provided in the cavity of the hollow shaft, the driving nut is sleeved on the second screw rod, and the end of the second screw rod away from the second motor is connected to the ejection block.

[0008] As an improvement of the present invention, the nut mounting sleeve is a hollow structure, one end of which is sleeved on the outside of the driving nut. A bearing structure is sleeved on the outside of the nut mounting sleeve, and the end of the nut mounting sleeve away from the driving nut is engaged and connected with the hollow rotating shaft.

[0009] As an improvement of the present utility model, the second screw rod is arranged through the drive nut, the hollow rotating shaft and the nut mounting sleeve, the outer surface of the second screw rod and the inner surface of the drive nut are provided with threads, and the second screw rod is threadedly connected to the drive nut.

[0010] As an improvement of the utility model, the bearing structure includes a deep groove ball bearing.

[0011] As an improvement of the utility model, optical axis guide rails are symmetrically arranged on both sides of the cylinder body with the second screw rod as the central axis. One end of the optical axis guide rail is fixedly connected to the lower end surface of the cylinder body, and the other end extends out of the cylinder body and is fixedly connected to both sides of the ejection block. The optical axis guide rail is a retractable structure.

[0012] As an improvement of the utility model, the loading platform is an inverted gantry structure, and the upper end surface of the sliding block is provided with a limiting hole; the crossbeam part of the gantry structure is fixedly connected to the sliding block through the limiting hole.

[0013] As an improvement of the present invention, the first motor and the second motor are servo motors.

[0014] The beneficial effects of the utility model are as follows: compared with the prior art, the utility model provides an electric slide equipped with a pressure actuator, including an electric slide and a pressure actuator, a first motor is provided at one end of the electric slide, a rotating shaft is provided at one end of the first motor, the rotating shaft is connected to the first screw rod, a first motor is provided at one end of the electric slide, a sliding block is transmission-connected to the first motor through the first screw rod, an upper surface of the sliding block is fixedly connected to the loading platform, and the loading platform is fixedly connected to the pressure actuator; the electric slide is equipped with a loading platform, and a pressure actuator is installed on the loading platform, which can meet the production requirements of applying pressure to the product, and different loading platforms can be replaced according to different operating requirements, thereby improving the use scenarios of the working device; an electric cylinder is used as a pressure actuator, and the electric cylinder in the utility model is a motor that drives a driving nut to rotate, and then the driving nut drives the second screw rod, and the second screw rod drives the ejection block to realize linear mechanical transmission, saves the structure of the piston rod, reduces the cost, reduces the volume and weight of the operating device, and can meet a variety of working requirements; BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional diagram of the electric slide equipped with a pressure actuator of the utility model.

[0016] Figure 2 It is a three-dimensional diagram of the electric cylinder of the utility model.

[0017] Figure 3 It is a three-dimensional diagram of the electric slide of the utility model.

[0018] Figure 4 This is a front view of the interior of the electric cylinder of the present utility model.

[0019] Figure 5 This is an exploded view of the electric slide of the utility model.

[0020] Figure 6 This is an exploded view of the internal structure of the electric cylinder of the utility model.

[0021] The main component symbols are as follows: electric slide 1; first motor 11; shaft 111; sliding block 12; limiting hole 121; first screw rod 13; threaded column 131; pressure actuator 2; second motor 21; hollow shaft 211; second screw rod 221; bearing structure 222; driving nut 223; nut mounting sleeve 224; ejection block 23; optical axis guide rail 24; cylinder body 25; loading platform 3; DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the present invention, the present invention is further described below in conjunction with the accompanying drawings.

[0023] See also Figure 1 The utility model discloses an electric slide table equipped with a pressure actuator, which combines and integrates the electric slide table and the pressure actuator through structural design.

[0024] See also Figure 1 and Figure 5 The utility model specifically includes an electric slide 1 and a pressure actuator 2. A first motor 11 is provided at one end of the electric slide 1. A rotating shaft 111 is provided at one end of the first motor 11. The rotating shaft 111 is connected to a first screw rod 13. A sliding block 12 is sleeved on the first screw rod 13. The sliding block 12 is fixedly connected to a loading platform 3. The loading platform 3 is fixedly connected to the pressure actuator 2. The electric slide and the pressure actuator are operated separately. The sliding block performs a linear reciprocating motion along the direction of the first screw rod to move the pressure actuator to a corresponding working point. When the pressure actuator enters the working point, it starts to operate.

[0025] Among them, the pressure actuators are devices such as air cylinders, hydraulic cylinders, and electric cylinders.

[0026] Please refer to the following for details Figure 5In this embodiment, the rotating shaft 111 of the first motor 1111 is provided with a threaded opening, and a threaded column 131 is provided at one end of the first screw rod 13. The cross section of the threaded column 131 is smaller than the cross section of the first screw rod 13, and the rotating shaft 111 is threadedly connected to the first screw rod 13. The first screw rod is threadedly connected to the motor. Because the load and movement speed of the electric slide are relatively small when working in this embodiment, omitting the coupling in the traditional structure will not affect the normal operation of the electric slide, but will increase the concentricity of the first screw rod when rotating, improve the operation accuracy, save costs, and reduce the overall length compared with the module with the same stroke.

[0027] See also Figure 1-2 and Figure 4 In the present embodiment, the pressure actuator 2 is an electric cylinder, and the main components of the electric cylinder are a cylinder body 25 and an ejection block 23. The cylinder body 25 is fixedly connected to the loading platform 3. A second motor 21 is provided on the bottom end surface of the cylinder body 25. A hollow shaft 211 is provided on the output end of the second motor 21. A driving nut 223 is provided on the end of the hollow shaft 211 away from the second motor 21. The driving nut 223 is connected to the hollow shaft 211 through a nut mounting sleeve. A second screw rod 221 is provided in the cavity of the hollow shaft 211. The driving nut 223 is sleeved on the second screw rod 221. The end of the second screw rod 221 away from the second motor 21 is connected to the ejection block 23. An electric cylinder is selected as the pressure actuator. Compared with devices such as air cylinders and hydraulic cylinders, the electric cylinder has the advantages of small size, high precision and high durability. In this embodiment, a hollow rotating shaft is provided in the electric cylinder, and the hollow rotating shaft is connected to the nut through a nut mounting sleeve. The nut sleeve is provided on the lead screw, and the lead screw is connected to the ejection block, thereby eliminating complex structures such as the piston push rod connecting the nut and the ejection block in the traditional electric cylinder, thereby reducing the production cost and equipment volume.

[0028] Please refer to the following for details Figure 6 In this embodiment, the nut mounting sleeve is a hollow structure, one end of which is sleeved on the outside of the driving nut. A bearing structure 222 is sleeved on the outside of the nut mounting sleeve 224, and the end of the nut mounting sleeve 224 away from the driving nut 222 is engaged and connected with the hollow rotating shaft 211.

[0029] The second screw rod 221 is arranged through the driving nut 222, the hollow rotating shaft 211, and the nut mounting sleeve 224. The outer surface of the second screw rod 221 and the inner surface of the driving nut 222 are provided with threads. The second screw rod 221 is threadedly connected with the driving nut 222. The end of the second screw rod 221 away from the second motor 21 is fixedly connected with the center position of the push-out block 23. When the second motor is turned on, the hollow rotating shaft drives the driving nut to rotate through the nut mounting sleeve, and the driving nut drives the second screw rod placed in the hollow transmission mechanism to move. The second screw rod performs linear reciprocating motion, and the second screw rod drives the push-out block to move back and forth. A bearing is arranged outside the nut mounting sleeve to improve the concentricity and stability of the movement of the hollow rotating shaft and the driving nut.

[0030] In this embodiment, the bearing structure 222 generally adopts a deep groove ball bearing, which is suitable for operation at high speed or even extremely high speed, and is very durable and does not require frequent maintenance.

[0031] Please refer to the following for details Figure 4 In this embodiment, an optical axis guide rail 24 is symmetrically arranged on both sides of the cylinder body 25 with the second lead screw 221 as the central axis. One end of the optical axis guide rail 24 is fixedly connected to the lower end surface of the cylinder body 25, and the other end extends out of the cylinder body 25 and is fixedly connected to both ends of the ejection block 23. The optical axis guide rail 24 is a retractable structure; when the ejection block performs a linear reciprocating motion, it drives the optical axis guide rail to retract and retract. The connection between the optical axis guide rail and the ejection block can increase the stability of the ejection block movement and improve the feeding and positioning accuracy of the reciprocating motion of the working lead screw. Compared with the traditional machine tool guide rail, the friction coefficient of the optical axis guide rail can be reduced to 1 / 50 of the original. Since the starting friction force is greatly reduced, the occurrence of invalid motion is relatively reduced, so high-precision feeding and positioning can be achieved.

[0032] Please refer to the following for details Figure 1 In this embodiment, the loading platform 3 is an inverted gantry structure, and a limiting hole 121 is provided on the upper end surface of the sliding block 12; the crossbeam portion of the gantry structure is fixedly connected to the sliding block 12 through the limiting hole 121. In other embodiments, different loading platforms can be replaced according to different operating requirements, thereby improving the use scenarios of the working device.

[0033] In this embodiment, the first motor 11 adopts a servo motor with a size of 40 mm, and the second motor adopts a servo motor with a size of 25 mm. In this embodiment, a small-sized servo motor is selected, and the above structure can greatly reduce the volume of the equipment and save the customer's installation space;

[0034] In addition, servo motors have high precision and strong performance; they can meet higher working requirements than other motors of the same size. High precision; closed-loop control of position, speed and torque is achieved, overcoming the problem of stepper motors losing steps. Strong performance; generally the rated speed can reach 2000-3000 rpm; strong overload resistance, can withstand loads three times the rated torque, and is particularly suitable for occasions with instantaneous load fluctuations and requirements for rapid start; low-speed operation is stable, and no stepping operation phenomenon similar to stepper motors will occur during low-speed operation. Suitable for occasions with high-speed response requirements; the dynamic response time of motor acceleration and deceleration is short, generally within tens of milliseconds.

[0035] The advantages of the utility model are:

[0036] 1) The screw rod and motor in the electric slide directly reduce the coupling and other structures, which reduces the cost and the size of the module.

[0037] 2) Both modules use small-sized servo motors, which greatly reduce the size of the equipment while meeting the operating accuracy requirements and reducing the space required for equipment installation.

[0038] 3) The electric cylinder reduces the piston rod and other structures in the traditional electric cylinder, and adopts a screw rod directly connected to the ejection block, which reduces the size and weight and reduces the cost.

[0039] 4) The loading platform can be disassembled and replaced with different working modules according to different working scenarios.

[0040] The above disclosures are only several specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. An electric slide equipped with a pressure actuator, characterized in that: It includes an electric slide and a pressure actuator. A first motor is provided at one end of the electric slide. A rotating shaft is provided at one end of the first motor. The rotating shaft is connected to a first screw rod. A sliding block is sleeved on the first screw rod. The sliding block is fixedly connected to a loading platform. The loading platform is fixedly connected to the pressure actuator.

2. The electric slide table equipped with a pressure actuator according to claim 1, characterized in that: The rotating shaft of the first motor is provided with a threaded opening, one end of the first screw rod is provided with a threaded column, the cross section of the threaded column is smaller than the cross section of the first screw rod, and the rotating shaft is threadedly connected to the first screw rod.

3. The electric slide table equipped with a pressure actuator according to claim 1, characterized in that: The pressure actuator is an electric cylinder, which includes a cylinder body and an ejection block. The cylinder body is fixedly connected to the loading platform. A second motor is provided on the bottom end surface of the cylinder body. A hollow shaft is provided at the output end of the second motor. A driving nut is provided at the end of the hollow shaft away from the second motor. The driving nut is connected to the hollow shaft through a nut mounting sleeve. A second screw rod is provided in the cavity of the hollow shaft. The driving nut is sleeved on the second screw rod. The end of the second screw rod away from the second motor is fixedly connected to the ejection block.

4. The electric slide table equipped with a pressure actuator according to claim 3, characterized in that: The nut mounting sleeve is a hollow structure, one end of which is sleeved on the outside of the driving nut. A bearing structure is sleeved on the outside of the nut mounting sleeve. The end of the nut mounting sleeve away from the driving nut is engaged and connected with the hollow rotating shaft.

5. The electric slide table equipped with a pressure actuator according to claim 4, characterized in that: The second screw rod is inserted through the driving nut, the hollow rotating shaft and the nut mounting sleeve. The outer surface of the second screw rod and the inner surface of the driving nut are provided with threads, and the second screw rod is threadedly connected with the driving nut.

6. The electric slide table equipped with a pressure actuator according to claim 4, characterized in that: The bearing structure includes a deep groove ball bearing.

7. The electric slide table equipped with a pressure actuator according to claim 3, characterized in that: Optical axis guide rails are symmetrically arranged on both sides of the cylinder body with the second screw rod as the central axis. One end of the optical axis guide rail is fixedly connected to the lower end surface of the cylinder body, and the other end extends out of the cylinder body and is fixedly connected to both sides of the ejection block. The optical axis guide rail is a retractable structure.

8. The electric slide table equipped with a pressure actuator according to claim 1, characterized in that: The loading platform is an inverted gantry structure, and a limiting hole is provided on the upper end surface of the sliding block; the crossbeam part of the gantry structure is fixedly connected with the sliding block through the limiting hole.

9. The electric slide table equipped with a pressure actuator according to claim 3, characterized in that: The first motor and the second motor are servo motors.

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