Manual-automatic integrated push rod electric cylinder

Abstract

The invention relates to a manual-automatic integrated push rod electric cylinder which comprises a driving system, a hand wheel, a gearbox, a rear cover, a lead screw pair, a displacement sensor, a push rod, a linear guide rail pair and a cylinder body. The driving system comprises a motor end cover and a motor body; the gear box and the motor end cover are integrally arranged, the displacement sensor is integrated on the cylinder body, the rear cover is fixed on the motor end cover, a motor output shaft of the motor body, the gear box and the lead screw pair are sequentially in transmission connection, the push rod is respectively connected with the lead screw pair and the linear guide rail pair, and the hand wheel is connected with the motor output shaft. Compared with the prior art, the invention has the advantages of small size, large thrust, high precision and the like.

Description

Technical Field

[0001] The invention relates to an electric cylinder, in particular to a manual-automatic integrated push rod electric cylinder. Background Art

[0002] Electric cylinders can convert the rotary motion output by motors into linear motion and are widely used in industrial equipment and automation equipment. With the continuous development of automation, there is an increasing demand for highly integrated electric cylinders that can achieve small size, high precision, and high thrust. Especially in the lithium battery coating industry, many micrometer-like devices are often installed side by side on the coating die head. The gap on the die head is manually adjusted to improve the uniformity of the coating. The coating quality mainly depends on the density of the micrometers installed side by side and the adjustment accuracy of the micrometers. At the same time, the micrometers need to be self-locked after adjustment to resist the pressure in the die head cavity.

[0003] Existing manual adjustment micrometer devices have many shortcomings:

[0004] 1) Due to the influence of human factors, the adjustment error is large, and it is easy to adjust inadequately or over-adjust, resulting in uneven coating thickness and poor coating quality.

[0005] 2) Manual operation and adjustment result in low efficiency and long time consumption.

[0006] 3) It is impossible to achieve automated and intelligent remote control.

[0007] 4) Repeated manual adjustment will generate a large amount of waste, low slurry utilization rate and poor economy.

[0008] Therefore, how to realize an electric device with small size, large thrust and high precision to replace the manual micrometer has become a technical problem that needs to be solved. Summary of the invention

[0009] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a small-sized, high-thrust, high-precision manual-automatic push rod electric cylinder.

[0010] The purpose of the present invention can be achieved by the following technical solutions:

[0011] According to one aspect of the present invention, a manual-automatic push rod electric cylinder is provided, which includes a drive system, a hand wheel, a gear box, a rear cover, a screw pair, a displacement sensor, a push rod, a linear guide pair and a cylinder body; the drive system includes a motor end cover and a motor body;

[0012] The gear box is integrally arranged with the motor end cover, the displacement sensor is integrated on the cylinder body, the rear cover is fixed on the motor end cover, the motor output shaft, the gear box and the screw pair of the motor body are sequentially connected in transmission, the push rod is respectively connected with the screw pair and the linear guide pair, and the hand wheel is connected with the motor output shaft.

[0013] As a preferred technical solution, the drive system further includes a driver, an aviation plug and a communication interface respectively connected to the motor body.

[0014] As a preferred technical solution, the gearbox includes an input gear, a transition gear and an output gear that are meshed in sequence, a transition shaft is provided on the motor end cover, the input gear is connected to the motor output shaft, the transition gear is connected to the transition shaft, and the output gear is connected to the screw pair.

[0015] As a preferred technical solution, the electric cylinder also includes a thrust bearing, a deep groove ball bearing, and a locking nut. The thrust bearing, the output gear, the deep groove ball bearing, and the locking nut are arranged in the axial direction of the screw pair.

[0016] As a preferred technical solution, the thrust bearing is fixed in the upper and lower bearing chambers of the motor end cover, and the locking nut fixes the screw pair, thrust bearing, output gear, and deep groove ball bearing on the motor end cover.

[0017] As a preferred technical solution, the hand wheel is provided with a scale.

[0018] As a preferred technical solution, the cylinder body is fixed on the motor end cover, the linear guide pair is arranged on one side of the cylinder body, the displacement sensor is arranged on the other side of the cylinder body, and a wiring groove is provided on the cylinder body.

[0019] As a preferred technical solution, the electric cylinder also includes a front flange fixed on the cylinder body, the front flange is provided with a composite bearing, the driver and the displacement sensor are provided with a communication interface, and the communication interfaces of the two are connected by a wiring harness.

[0020] As a preferred technical solution, a magnetic strip is provided on the push rod, and the displacement sensor detects the position error of the push rod by sensing the magnetic strip and feeds back to the driver.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] 1) The present invention has a small size, integrates the drive motor and the gear box, and integrates the displacement sensor and the cylinder body, thereby greatly reducing the volume of the entire electric cylinder.

[0023] 2) The present invention has a large thrust, and the motor output torque is increased by the gear box, thereby further improving the thrust of the electric cylinder.

[0024] 3) The present invention has high precision. The displacement sensor detects the push rod position error by sensing the magnetic strip and feeds it back to the driver. The driver readjusts the push rod position, effectively reducing the error between the actual position of the push rod and the command position, and improving the control accuracy of the electric cylinder.

[0025] 4) The present invention has good rigidity, and the screw rod for transmitting torque is provided with a thrust bearing and a deep groove ball bearing to ensure axial and radial stability at the same time, and the linear guide pair also enhances the overall stability.

[0026] 5) The present invention has manual-automatic integrated adjustment. When the motor works normally, the push rod can be electrically adjusted. When the motor fails, the hand wheel can be rotated to adjust the position of the push rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the appearance structure of the electric cylinder of the present invention;

[0028] Figure 2 This is a schematic diagram of the internal structure of the electric cylinder of the present invention;

[0029] Figure 3 It is a schematic diagram of the structure of the drive system of the present invention;

[0030] Figure 4 This is a schematic diagram of the displacement sensor interface of the present invention.

[0031] Among them, 1 is the drive system, 2 is the hand wheel, 3 is the input gear, 4 is the transition gear, 5 is the transition shaft, 6 is the locking nut, 7 is the deep groove ball bearing, 8 is the rear cover, 9 is the output gear, 10 is the thrust bearing, 11 is the screw pair, 12 is the displacement sensor, 13 is the magnetic strip, 14 is the push rod, 15 is the front flange, 16 is the composite bearing, 17 is the linear guide pair, and 18 is the cylinder body;

[0032] 1a is the driver, 1b is the aviation plug, 1c is the motor output shaft, 1d is the motor end cover, 1e is the motor body, 1f is the communication interface, and 13a is the displacement sensor interface. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0034] like Figure 1 and Figure 2As shown, a manual-automatic integrated push rod electric cylinder includes a drive system 1, a hand wheel 2, a gear box, a rear cover 8, a screw pair 11, a displacement sensor 12, a push rod 14, a linear guide pair 17 and a cylinder body 18; the drive system 1 includes a motor end cover 1d and a motor body 1e; the gear box is integrally arranged with the motor end cover 1d, the displacement sensor 12 is integrated on the cylinder body 18, the rear cover 8 is fixed on the motor end cover 1d, the motor output shaft 1c, the gear box, and the screw pair 11 of the motor body 1e are sequentially connected in transmission, the push rod 14 is respectively connected to the screw pair 11 and the linear guide pair 17, and the hand wheel 2 is connected to the motor output shaft 1c. The present invention integrates the drive motor and the gear box, and integrates the displacement sensor and the cylinder body, thereby greatly reducing the volume of the entire electric cylinder.

[0035] like Figure 3 As shown, the driving system 1 further includes a driver 1a, an aviation plug 1b and a communication interface 1f which are respectively connected to the motor body 1e.

[0036] like Figure 2 As shown, the gearbox includes an input gear 3, a transition gear 4 and an output gear 9 meshed in sequence, a transition shaft 5 is provided on the motor end cover 1d, the input gear 3 is connected to the motor output shaft 1c, the transition gear 4 is connected to the transition shaft 5, and the output gear 9 is connected to the screw pair 11. The motor end cover and the gearbox on the drive system are integrated, the motor end cover is respectively provided with a motor output shaft, a transition shaft, and a screw pair, the input gear, the transition gear, and the output gear are respectively fixed on the motor output shaft, the transition shaft, and the screw, and the input gear and the transition gear are meshed, and the transition gear and the output gear are meshed, thereby realizing motion transmission.

[0037] like Figure 2 As shown, the electric cylinder also includes a thrust bearing 10, a deep groove ball bearing 7, and a locking nut 6. The thrust bearing 10, the output gear 9, the deep groove ball bearing 7, and the locking nut 6 are arranged in the axial direction of the screw pair 11. The thrust bearing and the deep groove ball bearing are arranged on the screw that transmits the torque, thereby ensuring the axial and radial stability at the same time. At the same time, the linear guide pair also enhances the overall stability.

[0038] like Figure 2 As shown, the thrust bearing 10 is fixed in the upper and lower bearing chambers of the motor end cover 1d, and the locking nut 6 fixes the screw pair 11, the thrust bearing 10, the output gear 9, and the deep groove ball bearing 7 on the motor end cover 1d.

[0039] The hand wheel 2 is fixed on the motor output shaft and is provided with a scale. The hand wheel can be used to realize manual and automatic integrated adjustment. When the motor works normally, the push rod can be electrically adjusted. When the motor fails, the hand wheel can be rotated to adjust the position of the push rod.

[0040] The cylinder body 18 is fixed on the motor end cover 1d, the linear guide pair 17 is arranged on one side of the cylinder body 18, the displacement sensor 12 is arranged on the other side of the cylinder body 18, and a wiring groove is arranged on the cylinder body 18.

[0041] The electric cylinder also includes a front flange 15 fixed on the cylinder body 18, and a composite bearing 16 is provided on the front flange 15. Figure 4 As shown, the driver 1a and the displacement sensor 12 are provided with communication interfaces, and the communication interfaces of the two are connected by a wiring harness.

[0042] The push rod 14 is provided with a magnetic strip 13. The displacement sensor 12 detects the position error of the push rod 14 by sensing the magnetic strip 13 and feeds it back to the driver 1a. The driver readjusts the push rod position, effectively reducing the error between the actual position of the push rod and the command position, and improving the control accuracy of the electric cylinder.

[0043] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A manual-automatic push rod electric cylinder, characterized in that: The electric cylinder comprises a drive system (1), a hand wheel (2), a gear box, a rear cover (8), a screw pair (11), a displacement sensor (12), a push rod (14), a linear guide pair (17) and a cylinder body (18); the drive system (1) comprises a motor end cover (1d) and a motor body (1e); The gearbox and the motor end cover (1d) are integrally arranged, the displacement sensor (12) is integrated on the cylinder body (18), the rear cover (8) is fixed on the motor end cover (1d), the motor output shaft (1c) of the motor body (1e), the gearbox, and the screw pair (11) are sequentially connected in transmission, the push rod (14) is respectively connected to the screw pair (11) and the linear guide pair (17), and the hand wheel (2) is connected to the motor output shaft (1c).

2. The manual-automatic push rod electric cylinder according to claim 1, characterized in that: The drive system (1) further comprises a driver (1a), an aviation plug (1b) and a communication interface (1f) respectively connected to the motor body (1e).

3. The manual-automatic push rod electric cylinder according to claim 1, characterized in that: The gear box comprises an input gear (3), a transition gear (4) and an output gear (9) which are meshed in sequence; a transition shaft (5) is provided on the motor end cover (1d); the input gear (3) is connected to the motor output shaft (1c); the transition gear (4) is connected to the transition shaft (5); and the output gear (9) is connected to a screw pair (11).

4. The manual-automatic push rod electric cylinder according to claim 3, characterized in that: The electric cylinder further comprises a thrust bearing (10), a deep groove ball bearing (7), and a locking nut (6); the thrust bearing (10), the output gear (9), the deep groove ball bearing (7), and the locking nut (6) are arranged in the axial direction of the screw pair (11).

5. The manual-automatic push rod electric cylinder according to claim 4, characterized in that: The thrust bearing (10) is fixed in the upper and lower bearing chambers of the motor end cover (1d), and the locking nut (6) fixes the screw pair (11), the thrust bearing (10), the output gear (9), and the deep groove ball bearing (7) on the motor end cover (1d).

6. The manual-automatic push rod electric cylinder according to claim 1, characterized in that: The hand wheel (2) is provided with a scale.

7. The manual-automatic push rod electric cylinder according to claim 1, characterized in that: The cylinder body (18) is fixed on the motor end cover (1d), the linear guide pair (17) is arranged on one side of the cylinder body (18), the displacement sensor (12) is arranged on the other side of the cylinder body (18), and a wiring groove is provided on the cylinder body (18).

8. The manual-automatic push rod electric cylinder according to claim 1, characterized in that: The electric cylinder also includes a front flange (15) fixed on the cylinder body (18), a composite bearing (16) is provided on the front flange (15), and communication interfaces are provided on the driver (1a) and the displacement sensor (12), and the communication interfaces of the two are connected via a wiring harness.

9. The manual-automatic push rod electric cylinder according to claim 2, characterized in that: The push rod (14) is provided with a magnetic strip (13), and the displacement sensor (12) detects the position error of the push rod (14) by sensing the magnetic strip (13), and feeds back the error to the driver (1a).

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