Automatic detection device for piston rod of electric cylinder

Abstract

The utility model discloses an electric cylinder piston rod automatic detection device, which comprises a detection base, an automatic bending detection mechanism and a fixing assembly, the automatic bending detection mechanism and the fixing assembly are both mounted at the top of the detection base, arc-shaped clamps are slidably connected to two ends of the bottoms of the inner walls of two adjusting grooves, and first bidirectional screw rods are rotatably connected to the inner walls of the two adjusting grooves. Pressure sensors are installed on the inner walls of one sides of the four arc-shaped clamps correspondingly, and balls are rotationally connected to the inner walls of the four sleeves correspondingly. According to the utility model, the arc-shaped clamps are clamped on the outer wall of the piston rod, during clamping, when the balls in the inner walls of the two arc-shaped clamps on the rear side are in contact with the piston rod and are pressed to extrude the pressure sensor, the driving of the first motor can be stopped, and at the moment, the ball on the front side is just in contact with the surface of the piston rod; the supporting plate is moved to enable the arc-shaped clamp to slide on the outer wall of the piston rod, and when passing through a bending area of the piston rod, the ball on the front side is pressed to drive the sleeve to compress the spring to move and extrude the pressure sensor to trigger the alarm to give an alarm.

Description

Technical Field

[0001] This utility model relates to the technical field of electric cylinder piston rod detection, specifically an automatic detection device for electric cylinder piston rod. Background Technology

[0002] An electric cylinder is a modular product that integrates a servo motor and a lead screw. It converts the rotary motion of the servo motor into linear motion, and transforms the best advantages of the servo motor—precise speed control, precise revolution control, and precise torque control—into precise speed control, precise position control, and precise thrust control. This makes it a revolutionary new product that achieves high-precision linear motion. The piston rod is an important component of the electric cylinder's internal and external structure, and as the output end of the electric cylinder, its verticality directly affects the working state of the electric cylinder. Therefore, strict verticality testing is required during the production and processing of the electric cylinder piston rod.

[0003] However, in existing technologies, the inspection of electric cylinder piston rods mostly involves testing the strength of the piston rod, while the verticality of the piston rod is generally observed by the naked eye. This inspection method is not very accurate and requires the operator to frequently observe each piston rod. Another method is to use infrared sensing equipment for illumination inspection. However, this method is easily affected by the ambient light, which can affect the final inspection data, reducing the accuracy of the inspection, reducing the efficiency of the inspection, and increasing the workload of the operators. In view of this, this design proposes an automatic inspection device for electric cylinder piston rods. Utility Model Content

[0004] The purpose of this invention is to provide an automatic detection device for electric cylinder piston rods to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model proposes an automatic detection device for an electric cylinder piston rod, including a detection base and an automatic bending detection mechanism and a fixing component, both installed on the top of the detection base and distributed vertically.

[0006] The automatic bending detection mechanism includes a support plate mounted on the top of the detection base. Adjustment grooves are installed on both sides of the bottom of the support plate. Arc-shaped clamps are slidably connected to both ends of the bottom of the inner walls of the two adjustment grooves. First bidirectional lead screws are rotatably connected to the inner walls of the two adjustment grooves, and the outer walls of both ends of the first bidirectional lead screws are threadedly connected to the inner walls of the four arc-shaped clamps. Pressure sensors are installed on the inner walls of one side of each of the four arc-shaped clamps. Multiple support shafts are fixedly arranged at equal intervals on one side of the inner walls of the four arc-shaped clamps. Sleeves are installed on one side of the inner walls of the four arc-shaped clamps. Connecting holes are opened on one side of each sleeve, and the outer wall of each support shaft is inserted into the inner wall of each connecting hole. A spring is sleeved on the outer wall of each support shaft, and both ends of each spring are fixedly connected to one side of each of the four arc-shaped clamps and one side of each of the four sleeves. Ball bearings are rotatably connected to the inner walls of the four sleeves.

[0007] In one example, one end of each of the two first bidirectional lead screws passes through the outer wall of one side of the two adjusting grooves and is connected to a synchronous pulley. The outer walls of the two synchronous pulleys are meshed with a synchronous belt. One side of the support plate is rotatably connected to a shaft. One end of the shaft and the other end of one of the first bidirectional lead screws are both fixedly provided with pulleys. The outer walls of the two pulleys are connected with belts.

[0008] In one example, a first motor is fixedly mounted on one side of the outer wall of the support plate, and one end of the rotating shaft passes through the outer wall of one side of the support plate and is fixedly connected to the output end of the first motor.

[0009] In one example, a support frame is fixedly provided at the edge of one side of the top of the detection base, and a first sliding groove is provided at the upper edge of one side of the support frame. The outer wall of one end of the support plate is slidably connected to the inner wall of the first sliding groove. A one-way screw is rotatably connected to the inner wall of the first sliding groove, and the outer wall of the one-way screw is threadedly connected to the inner wall of the support plate. One end of the one-way screw passes through the outer wall of one side of the support frame and is connected to a second motor.

[0010] In one example, the fixing component includes a slot installed at the top center of the detection base, a second sliding groove is provided at the center of the bottom of the inner wall of the slot, sliders are slidably connected to both ends of the inner wall of the slot, and the bottoms of the two sliders are slidably connected to the inner walls at both ends of the second sliding groove, and electric push rods are installed on the tops of the two sliders.

[0011] In one example, the output ends of both electric push rods are fixedly provided with clamps, the inner wall of the second slide is rotatably connected to a second bidirectional lead screw, and the outer walls of both ends of the second bidirectional lead screw are respectively threaded to the inner walls of the two clamps. One end of the second bidirectional lead screw passes through the outer wall of one side of the slot and is connected to a rotating handle.

[0012] In one example, a control panel is installed on one side of the detection base, and an alarm is installed outside the detection base. Two of the pressure sensors are electrically connected to the first motor through the control panel, and the other two pressure sensors are electrically connected to the alarm through the control panel. The second motor and the electric push rod are both electrically connected to an external power supply through the control panel.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting an automatic bending detection mechanism, when detecting whether the piston rod is bent, the piston rod is fixed and raised to a specified height by a fixing component, and then clamped onto the outer wall of the piston rod by an arc-shaped clamp. When clamped, the balls in the inner walls of the two arc-shaped clamps on the rear side contact the piston rod and are compressed by the sleeve compression spring, causing them to press against the pressure sensor. This stops the drive of the first motor, causing the arc-shaped clamp to stop approaching. At this time, the balls on the front side just contact the surface of the piston rod. The moving support plate causes the arc-shaped clamp to slide on the outer wall of the piston rod. When passing through the bending area of ​​the piston rod, the balls on the front side are compressed, and the sleeve provides compression spring movement, causing the balls to press against the pressure sensor, which triggers the alarm. This achieves the purpose of automated piston rod bending detection. This design solves the problems of poor bending detection accuracy, heavy operator workload, and low detection efficiency in the prior art. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the automatic bending detection mechanism of this utility model;

[0016] Figure 3 This is a schematic diagram of the linkage connection structure of the arc-shaped clamp and other components of this utility model;

[0017] Figure 4 This is a schematic diagram of the internal structure of the arc-shaped clip of this utility model;

[0018] Figure 5 Appendix to the specification of this utility model Figure 4 Enlarged structural diagram at point A;

[0019] Figure 6 This is a schematic diagram of the structure of the fixing component of this utility model.

[0020] In the diagram: 1. Detection base; 2. Automatic bending detection mechanism; 201. Support plate; 202. Adjustment groove; 203. Arc-shaped clamp; 204. First bidirectional lead screw; 205. Pressure sensor; 206. Support shaft; 207. Sleeve; 208. Connecting hole; 209. Spring; 210. Ball bearing; 3. Synchronous pulley; 4. Synchronous belt; 5. Rotating shaft; 6. Pulley; 7. Belt strip; 8. First motor; 9. Support frame; 10. First slide groove; 11. One-way lead screw; 12. Second motor; 13. Fixing assembly; 1301. Slot; 1302. Second slide groove; 1303. Slider; 1304. Electric push rod; 1305. Fixing clamp; 1306. Second bidirectional lead screw; 1307. Rotating handle. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-6 The present invention provides a technical solution: an automatic detection device for an electric cylinder piston rod, comprising a detection base 1 and an automatic bending detection mechanism 2 and a fixing component 13, which are installed on the top of the detection base 1 and distributed vertically.

[0023] The automatic bending detection mechanism 2 includes a support plate 201 mounted on top of the detection base 1. Adjustment grooves 202 are installed on both sides of the bottom of the support plate 201. Arc-shaped clamps 203 are slidably connected to both ends of the bottom of the inner walls of the two adjustment grooves 202. First bidirectional lead screws 204 are rotatably connected to the inner walls of the two adjustment grooves 202, and the outer walls of both ends of the two first bidirectional lead screws 204 are threadedly connected to the inner walls of the four arc-shaped clamps 203. Pressure sensors 205 are installed on the inner walls of one side of each of the four arc-shaped clamps 203. Multiple support shafts 206 are fixedly provided at equal distances on one side. A sleeve 207 is installed on one side of the inner wall of each of the four arc-shaped clamps 203. A connecting hole 208 is opened on one side of each of the four sleeves 207. The outer wall of each support shaft 206 is inserted and connected to the inner wall of each connecting hole 208. A spring 209 is sleeved on the outer wall of each support shaft 206. The two ends of each spring 209 are fixedly connected to one side of each of the four arc-shaped clamps 203 and one side of each of the four sleeves 207. A ball bearing 210 is rotatably connected to the inner wall of each of the four sleeves 207.

[0024] In use, the piston rod to be tested is fixed by the fixing component 13 on the top of the detection base 1 and raised to a specified height. Then, the first motor 8 is started via the control panel, causing the four arc-shaped clamps 203 to approach and lock the piston rod on both sides. During the process of the four arc-shaped clamps 203 locking the piston rod, when the ball bearings 210 in the inner wall of the sleeves 207 connected by the support shaft 206 of the two rear arc-shaped clamps 203 come into contact with the outer wall of the piston rod, the ball bearings 210 are compressed, which in turn compresses the springs 209 of the two sleeves 207 and slides a distance on the support shaft 206 until the ball bearings 210 come into contact with the pressure sensors 205 inside the two arc-shaped clamps 203. At this point, the pressure sensors 205 send a command to the first motor 8, causing it to stop driving. After stopping, the ball bearings 210 in the sleeves 207 inside the other two arc-shaped clamps 203 also come into contact with the surface of the piston rod, but the two sleeves 207 are still some distance from the arc-shaped clamps 203. Because the distance is relatively far, the two ball bearings 210 on the front side do not contact the pressure sensor 205 inside the arc-shaped clamp 203. Then, by moving the support plate 201, the four arc-shaped clamps 203 slide on the surface of the piston rod. If the piston rod bends, the ball bearings in the two arc-shaped clamps 203 on the front side will be squeezed and contact the pressure sensor 205, which will trigger the alarm inside the detection base. This will quickly detect the bent piston rod and pick it out for rework. During the detection, the angle of the piston rod can be rotated for repeated detection to prevent the detection mechanism from failing to detect the bent product due to different bending directions. The bending degree of the piston rod has a certain standard range, generally not exceeding 0.1 mm / m. Therefore, the buffer distance between the ball bearing 210 that triggers the alarm on the front side and the pressure sensor 205 can be set to not exceed this value range. This design solves the problems of poor bending degree detection accuracy, heavy operator workload, and low detection efficiency in the existing technology.

[0025] Furthermore, one end of each of the two first bidirectional lead screws 204 passes through the outer wall of one side of the two adjusting grooves 202 and is connected to a synchronous pulley 3. The outer walls of the two synchronous pulleys 3 are meshed with a synchronous belt 4. A rotating shaft 5 is rotatably connected to one side of the support plate 201. A pulley 6 is fixedly provided at one end of the rotating shaft 5 and the other end of one of the first bidirectional lead screws 204. A belt 7 is connected to the outer walls of the two pulleys 6. The two first bidirectional lead screws 204 are connected through the synchronous pulleys 3 and the synchronous belt 4, so that the synchronicity of their rotation can be ensured when the first bidirectional lead screws 204 are driven to rotate.

[0026] A first motor 8 is fixedly installed on one side of the outer wall of the support plate 201, and one end of the rotating shaft 5 passes through the outer wall of one side of the support plate 201 and is fixedly connected to the output end of the first motor 8. Before detection, the first motor 8 is started first, so that it drives the rotating shaft 5 to rotate one of the first bidirectional lead screws 204 through the linkage of the pulley 6 and the belt 7. Under the linkage of the synchronous pulley 3 and the synchronous belt 4, the two first bidirectional lead screws 204 can rotate synchronously, thereby realizing the purpose of the four arc-shaped clamps 203 moving closer to each other in the adjustment groove 202, and realizing the automatic contact piston rod.

[0027] Furthermore, a support frame 9 is fixedly installed at one edge of the top side of the testing base 1. A first sliding groove 10 is formed at the upper edge of one side of the support frame 9. The outer wall of one end of the support plate 201 is slidably connected to the inner wall of the first sliding groove 10. A one-way screw 11 is rotatably connected to the inner wall of the first sliding groove 10, and the outer wall of the one-way screw 11 is threadedly connected to the inner wall of the support plate 201. One end of the one-way screw 11 passes through the outer wall of one side of the support frame 9 and is connected to a second motor 12. During testing, the second motor 12 is started to drive the one-way screw 11 to rotate in the first sliding groove 10, thereby carrying the support... The plate 201 slides left and right on the support frame 9, causing the arc-shaped clamp 203 to slide back and forth on the surface of the piston rod. While sliding, the ball 210 rolls on the surface of the piston rod. When it encounters a bending area, the ball 210 is compressed. When the bending exceeds the specified range, the ball 210 presses against the pressure sensor 205, which will trigger an alarm and remove the bent defective product. During the inspection process, because the ball 210 has strong rolling properties, the arc-shaped clamp 203 and the others can move smoothly on the surface of the piston rod for inspection without the need for manual operation by the staff, thus achieving automated inspection.

[0028] Furthermore, the fixing assembly 13 includes a slot 1301 installed at the top center of the detection base 1. A second sliding groove 1302 is provided at the center of the bottom of the inner wall of the slot 1301. Sliding blocks 1303 are slidably connected to both ends of the inner wall of the slot 1301, and the bottoms of the two sliding blocks 1303 are slidably connected to the inner walls at both ends of the second sliding groove 1302. An electric push rod 1304 is installed on the top of each of the two sliding blocks 1303. Before detecting the piston rod, it is placed above the slot 1301 and clamped and fixed by the fixing clamp 1305. A positioning piece is provided on one side of the fixing clamp 1305, as shown in the attached instruction manual. Figure 6 As shown, the piston rod can be fixed in the center by positioning the positioning plate.

[0029] Both output ends of the two electric push rods 1304 are fixedly equipped with clamps 1305. The inner wall of the second slide groove 1302 is rotatably connected to the second bidirectional lead screw 1306, and the outer walls of both ends of the second bidirectional lead screw 1306 are threadedly connected to the inner walls of the two clamps 1305 respectively. One end of the second bidirectional lead screw 1306 passes through the outer wall of one side of the slot 1301 and is connected to a rotating handle 1307. When fixing the piston rod, rotate the rotating handle 1307 on one side of the slot 1301 to rotate the second bidirectional lead screw 1306, thereby causing the sliders 1303 at both ends to slide against each other in the slot 1301 and the second slide groove 1302 until the piston rod is clamped and fixed. Then, start the electric push rod 1304 at the top of the slider 1303 to push the piston rod up until the piston rod is located at the center of the four arc-shaped clamps 203 for detection.

[0030] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on its differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so they are described more simply; relevant parts can be referred to the descriptions of the method embodiments.

[0031] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. An automatic detection device for an electric cylinder piston rod, comprising a detection base (1) and an automatic bending detection mechanism (2) and a fixing component (13) both installed on the top of the detection base (1) and distributed vertically. Its features are: The automatic bending detection mechanism (2) includes a support plate (201) installed on the top of the detection base (1). Adjustment grooves (202) are installed on both sides of the bottom of the support plate (201). Arc-shaped clamps (203) are slidably connected to the bottom ends of the inner walls of the two adjustment grooves (202). First bidirectional lead screws (204) are rotatably connected to the inner walls of the two adjustment grooves (202). The outer walls of the two first bidirectional lead screws (204) are threadedly connected to the inner walls of the four arc-shaped clamps (203). Pressure sensors (205) are installed on the inner walls of one side of each of the four arc-shaped clamps (203). Multiple support shafts (206) are fixedly provided at equal intervals on one side of the inner wall. A sleeve (207) is installed on one side of the inner wall of each of the four arc-shaped clamps (203). A connecting hole (208) is opened on one side of each of the four sleeves (207). The outer wall of each support shaft (206) is inserted and connected to the inner wall of each connecting hole (208). A spring (209) is sleeved on the outer wall of each support shaft (206). The two ends of each spring (209) are fixedly connected to one side of each of the four arc-shaped clamps (203) and one side of each of the four sleeves (207). A ball bearing (210) is rotatably connected to the inner wall of each of the four sleeves (207).

2. The automatic detection device for an electric cylinder piston rod according to claim 1, characterized in that: One end of each of the two first bidirectional lead screws (204) passes through the outer wall of one side of the two adjusting grooves (202) and is connected to a synchronous pulley (3). The outer walls of the two synchronous pulleys (3) are meshed with a synchronous belt (4). A rotating shaft (5) is rotatably connected to one side of the support plate (201). One end of the rotating shaft (5) and the other end of one of the first bidirectional lead screws (204) are both fixedly provided with pulleys (6). The outer walls of the two pulleys (6) are connected with belts (7).

3. The automatic detection device for an electric cylinder piston rod according to claim 1, characterized in that: A first motor (8) is fixedly installed on one side of the outer wall of the support plate (201), and one end of the rotating shaft (5) passes through the outer wall of one side of the support plate (201) and is fixedly connected to the output end of the first motor (8).

4. The automatic detection device for an electric cylinder piston rod according to claim 1, characterized in that: A support frame (9) is fixedly provided at the edge of the top side of the detection base (1). A first sliding groove (10) is provided at the upper edge of one side of the support frame (9). The outer wall of one end of the support plate (201) is slidably connected to the inner wall of the first sliding groove (10). A one-way screw (11) is rotatably connected to the inner wall of the first sliding groove (10). The outer wall of the one-way screw (11) is threadedly connected to the inner wall of the support plate (201). One end of the one-way screw (11) passes through the outer wall of one side of the support frame (9) and is connected to a second motor (12).

5. The automatic detection device for an electric cylinder piston rod according to claim 1, characterized in that: The fixing component (13) includes a slot (1301) installed at the top center of the detection base (1). A second sliding groove (1302) is provided at the center of the bottom of the inner wall of the slot (1301). Sliding blocks (1303) are slidably connected to both ends of the inner wall of the slot (1301), and the bottoms of the two sliding blocks (1303) are slidably connected to the inner walls at both ends of the second sliding groove (1302). An electric push rod (1304) is installed on the top of each of the two sliding blocks (1303).

6. The automatic detection device for an electric cylinder piston rod according to claim 5, characterized in that: The output ends of the two electric push rods (1304) are fixedly provided with clamps (1305). The inner wall of the second slide groove (1302) is rotatably connected to a second bidirectional lead screw (1306), and the outer walls of both ends of the second bidirectional lead screw (1306) are threadedly connected to the inner walls of the two clamps (1305). One end of the second bidirectional lead screw (1306) passes through the outer wall of one side of the slot (1301) and is connected to a rotating handle (1307).

7. The automatic detection device for an electric cylinder piston rod according to claim 4, characterized in that: A control panel is installed on one side of the detection base (1). An alarm is installed on the outside of the detection base (1). Two of the pressure sensors (205) are electrically connected to the first motor (8) through the control panel. The other two pressure sensors (205) are electrically connected to the alarm through the control panel. The second motor (12) and the electric push rod (1304) are both electrically connected to an external power supply through the control panel.

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