Press equipment for mounting valve nut

Abstract

The utility model discloses a press device for mounting a valve nut, the press device for mounting the valve nut comprises a rack, a bearing plate, a driving cylinder and a pressing plate, the bearing plate is rotatably arranged on the rack, the driving cylinder is arranged on the rack, and the pressing plate is arranged on the bearing plate. The pressing plate is directly or indirectly matched with a piston rod of the driving air cylinder, an extrusion plane is arranged on the pressing plate, a bearing plane is arranged on the bearing plate, and the extrusion plane and the bearing plane are in a parallel state. Compared with the prior art, the pressing machine equipment has the following beneficial effects that the probability of offset between the valve deck and the valve body after clamping is low, the whole clamping process can be carried out only by driving the air cylinder to operate, dismounting and mounting operation is not needed, and the whole clamping process is more convenient and faster.

Description

Technical Field

[0001] The utility model relates to the field of valve assembly tooling, in particular to a press device for installing valve nuts. Background Art

[0002] At present, when assembling valves, it is necessary to fasten the valve body and the valve cover with nuts. When fastening, a robot (or a worker holding a wrench) is used to tighten the nuts. However, whether it is a robot or manual operation, the valve body and the valve cover need to be in a compressed state. In order to make the valve cover and the valve body in a compressed state, several G-type clamps are usually used to clamp the valve cover and the valve body together. There is a problem with using G-type clamps to clamp the valve body and the valve cover, that is, the G-type clamps at various locations cannot ensure that the clamping pressure at various locations is equal. Therefore, there is a certain probability of misalignment between the valve body and the valve cover when the G-type clamps are used for clamping. Once the valve body and the valve cover are misaligned, it cannot be guaranteed that the two are completely fastened together, and the disassembly and assembly of the G-type clamps is also very cumbersome. Utility Model Content

[0003] In view of the above problems, the utility model provides a press device for installing valve nuts.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A press device for installing valve nuts includes a frame, a supporting plate, a driving cylinder and a pressure plate, wherein the supporting plate is rotatably arranged on the frame, the driving cylinder is arranged on the frame, the pressure plate is directly or indirectly matched with the plug rod of the driving cylinder, an extrusion plane is arranged on the pressure plate, a supporting plane is arranged on the supporting plate, and the extrusion plane and the supporting plane are in a parallel state.

[0006] In this type of press equipment, the support plate is used to support the valve body (the valve body can be fixed on the support plate or not), the supporting plane of the support plate is used to contact the valve body, and then the valve cover is placed on the top of the valve body, and then the cylinder is driven to operate. When the cylinder is driven to operate, it drives the pressure plate to move toward the valve cover, and the pressure plate contacts the valve cover through its own extrusion plane. The valve body and the valve cover are clamped between the extrusion plane and the supporting plane. Compared with the use of G-type clamps for clamping, the use of support plates and pressure plates for clamping in this equipment can ensure that the clamping pressure at various locations is equal. When the valve cover and the valve body are subsequently assembled with bolts, the probability of the two being offset is reduced, and the entire clamping process only needs to drive the cylinder to operate, without the need for disassembly and assembly, and the entire clamping process is more convenient and quick.

[0007] Specifically in this type of equipment, in order to facilitate the temporary fixing of the valve body on the support plate by a bolt assembly (or other similar parts), a plurality of waist-round through holes are opened on the support plate, the distance between two adjacent waist-round through holes is equal, and the angle formed between two adjacent waist-round through holes is also equal. In order to keep the entire frame stable, a support foot is provided at the bottom of the frame.

[0008] Optionally, a pressure sensor is also included, and the pressure sensor is arranged on the pressure plate.

[0009] The function of the pressure sensor is to sense the pressure of the pressure plate on the valve cover, thereby indirectly monitoring the extrusion force between the valve cover and the valve body.

[0010] Optionally, it also includes a guide rod and a connecting plate, the guide rod is arranged on the frame, the pressure plate is rotatably mounted on the connecting plate, the connecting plate and the guide rod are slidably matched together, and the plug rod of the driving cylinder is matched together with the connecting plate.

[0011] There are two guide rods, which are cylindrical and parallel to each other. The connecting plate is slidably mounted on the two guide rods through its through hole. The guide rods guide the movement of the connecting plate (including the pressure plate) to prevent the connecting plate from being offset during the sliding process. The guide rods are perpendicular to the connecting plate. The plug rod of the driving cylinder is located between the two parallel guide rods, and the plug rod is parallel to the guide rods. The guide rod is perpendicular to the connecting plate.

[0012] In this equipment, a mounting sleeve is provided on the connecting plate, the mounting sleeve and the connecting sleeve are respectively located at two ends of the connecting plate, an inner ring groove is provided on the mounting sleeve, a raised rotating shaft is provided on the pressure plate, the raised rotating shaft is perpendicular to the pressure plate, the extrusion plane and the raised rotating shaft are respectively located on both sides of the pressure plate, a limiting ring sleeve is fixed on the raised rotating shaft, the limiting ring sleeve is located in the inner ring groove, the inner ring groove and the limiting ring sleeve limit the pressure block to prevent the pressure block from detaching from the connecting sleeve.

[0013] Optionally, a connecting sleeve is provided on the connecting plate, and the connecting sleeve cooperates with the plug rod.

[0014] Specifically, the connecting sleeve and the plug rod can be matched together by threaded connection, or directly welded together by the connecting sleeve and the plug rod, and the connecting sleeve and the pressing block are respectively located on both sides of the connecting plate.

[0015] Optionally, a grating component is also included, and the grating component is arranged on the frame.

[0016] The specific function of the grating assembly is to form a detection light curtain on the frame. The pressure plate, supporting plate, valve cover and valve body are all located inside the detection light curtain. If the detection light curtain senses that an object (possibly the user's body) has entered the detection light curtain during the operation of the driving cylinder or servo motor, the driving cylinder and servo motor will be shut down in time to avoid personal injury accidents and damage to mechanical equipment.

[0017] Optionally, a connecting shaft is provided on the supporting plate, and a servo motor is provided on the frame, and the servo motor cooperates with the connecting shaft on the supporting plate.

[0018] Specifically, the connecting axis is perpendicular to the supporting plate, and the waist-shaped through holes on the supporting plate are distributed in a ray shape around the connecting axis.

[0019] Optionally, it also includes a reducer and an encoder, one end of the reducer cooperates with the connecting shaft, and the other end of the reducer cooperates with the shaft of the servo motor, the encoder is set on the frame or on the reducer, and the connecting shaft passes through the encoder.

[0020] The specific servo motor is matched with the connecting shaft on the support plate through the reducer. The servo motor drives the reducer to run, the reducer drives the connecting shaft to rotate, and the rotation of the connecting shaft drives the support plate to rotate. The rotation center of the support plate is the center line of the connecting shaft. In order to record the rotation direction and rotation amount of the support plate, an encoder is further arranged on the reducer or the frame. The connecting shaft passes through the encoder to monitor the supporting plate by monitoring the connecting shaft.

[0021] In this press equipment, since the support plate is in a state that can be rotated as needed, and the pressure plate of the connecting plate is also rotatably installed on the connecting plate, the pressure plate can rotate relative to the connecting plate, and the rotation center of the pressure plate is the central axis of the pressure plate itself. Since the support plate can rotate, the pressure plate can also rotate, so the valve cover and valve body clamped between the pressure plate and the support plate can also rotate synchronously, and the synchronous rotation of the valve cover and the valve body can facilitate the robot or workers to manually tighten the nuts between the valve cover and the valve body, and the rotation of the pressure plate relative to the connecting plate will not affect the clamping of the valve body and the valve cover by the pressure plate and the support plate.

[0022] In this equipment, since a reducer is installed, the existence of the reducer can more accurately control the rotation of the support plate. At the same time, when the manipulator or the operator is tightening the bolts on the valve body, the reducer can apply a reverse force to the support plate to interlock. Since the rotation speed of the support plate is not high, there is enough time to use a torque wrench to tighten the nut of the valve during the rotation process. At the same time, the direction of rotation is opposite to the direction of the tightening force, which can make the operator save more effort when tightening the nut.

[0023] In this equipment, when the operator or the manipulator twists the nut between the valve body and the valve cover, a force will be generated on the support plate. The force is opposite to the direction of rotation of the support plate. The force will eventually be transmitted to the servo motor with the help of the connecting shaft, causing the speed of the servo motor to fluctuate. The speed fluctuation of the servo motor will drive the speed of the connecting shaft to fluctuate. The speed fluctuation of the connecting shaft will be sensed by the encoder, so the monitoring of this fluctuation can be used to determine whether the nut is leaking. If there is a fluctuation, it means that the nut is not leaking; if there is no fluctuation, it means that the nut is leaking.

[0024] Optionally, a bearing frame and a suspension frame are provided on the frame, the supporting plate is rotatably provided on the bearing frame, and the driving cylinder is provided on the suspension frame.

[0025] Specifically, the suspension frame is arranged on the bearing frame, the servo motor, the reducer and the supporting plate are all located on the bearing frame, and the driving cylinder and the guide rod are all located on the suspension frame. In the press equipment, a guide sleeve is arranged on the suspension frame, and the guide rod and the guide sleeve are slidably matched together.

[0026] Optionally, a control host is also included, and the driving cylinder, grating assembly and servo motor are all connected to the control host.

[0027] The signal obtained by the grating component is transmitted to the control host, and the operation of the drive cylinder and servo motor is controlled by the control host.

[0028] The beneficial effects of the utility model are: the probability of offset between the valve cover and the valve body after clamping is low, and the entire clamping process can be carried out by only driving the cylinder to operate, without disassembly and assembly operations, and the entire clamping process is more convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram showing the use of a press for installing valve nuts.

[0030] Figure 2 It is a schematic diagram of the positional relationship between the suspension frame and the bearing frame;

[0031] Figure 3 It is a schematic diagram of the matching relationship between the connecting shaft and the reducer;

[0032] Figure 4 This is a schematic diagram of the coordination between the reducer and the servo motor;

[0033] Figure 5 It is a schematic diagram of the positional relationship between the connecting plate and the pressing plate;

[0034] Figure 6 It is a schematic diagram of the matching relationship between the pressure plate and the mounting sleeve.

[0035] The reference numerals in the figure are: 1. control host; 2. drive cylinder; 201. plug rod; 3. suspension frame; 4. guide rod; 5. grating assembly; 6. frame; 7. carrier frame; 8. reducer; 9. guide sleeve; 10. connecting sleeve; 11. connecting plate; 12. pressure sensor; 13. pressure block; 1301. extrusion plane; 1302. raised shaft; 14. valve cover; 15. valve body; 16. supporting plate; 1601. supporting plane; 1602. waist round through hole; 17. connecting shaft; 18. encoder; 19. support foot; 20. servo motor; 21. mounting sleeve; 2101. inner ring groove; 22. limit ring sleeve. DETAILED DESCRIPTION

[0036] The utility model is described in detail below in conjunction with the accompanying drawings.

[0037] As attached Figure 1 ~Attached Figure 6 As shown, a press device for installing valve nuts includes a frame 6, a supporting plate 16, a driving cylinder 2 and a pressure plate. The supporting plate 16 is rotatably arranged on the frame 6, the driving cylinder 2 is arranged on the frame 6, the pressure plate is directly or indirectly matched with the plug rod 201 of the driving cylinder 2, an extrusion plane 1301 is arranged on the pressure plate, and a supporting plane 1601 is arranged on the supporting plate 16, and the extrusion plane 1301 and the supporting plane 1601 are in a parallel state.

[0038] In this press equipment, the supporting plate 16 is used to support the valve body 15 (the valve body 15 can be fixed on the supporting plate 16 or not), and the supporting plane 1601 of the supporting plate 16 is used to contact the valve body 15. Then the valve cover 14 is placed above the valve body 15, and then the cylinder 2 is driven to operate. When the cylinder 2 is driven to operate, it drives the pressure plate to move toward the valve cover 14. The pressure plate contacts the valve cover 14 through its own extrusion plane 1301, and the valve body 15 and the valve cover 14 are clamped between the extrusion plane 1301 and the supporting plane 1601. Compared with the use of G-type clamps for clamping, the use of the supporting plate 16 and the pressure plate for clamping in this equipment can ensure that the clamping pressure at various locations is equal. When the valve cover 14 and the valve body 15 are subsequently assembled with bolts, the probability of the two being offset is reduced, and the entire clamping process only needs to drive the cylinder 2 to operate, without the need for disassembly and assembly, and the entire clamping process is more convenient and quick.

[0039] Specifically in this type of equipment, in order to facilitate the temporary fixing of the valve body 15 on the supporting plate 16 by means of a bolt assembly (or other similar parts), a plurality of waist-shaped through holes 1602 are provided on the supporting plate 16, and the distance between two adjacent waist-shaped through holes 1602 is equal, and the angle formed between two adjacent waist-shaped through holes 1602 is also equal. In order to keep the entire frame stable, a support foot 19 is provided at the bottom of the frame.

[0040] As attached Figure 1 ~Attached Figure 6 As shown, a pressure sensor 12 is also included, and the pressure sensor 12 is arranged on the pressure plate.

[0041] The function of the pressure sensor 12 is to sense and detect the pressure of the pressure plate on the valve cover 14 , thereby indirectly monitoring the squeezing force between the valve cover 14 and the valve body 15 .

[0042] As attached Figure 1 ~Attached Figure 6 As shown, it also includes a guide rod 4 and a connecting plate 11. The guide rod 4 is arranged on the frame 6. The pressure plate is rotatably installed on the connecting plate 11. The connecting plate 11 and the guide rod 4 are slidably matched together. The plug rod 201 of the driving cylinder 2 is matched together with the connecting plate 11.

[0043] Specifically, there are two guide rods 4, which are cylindrical and parallel to each other. The connecting plate 11 is slidably mounted on the two guide rods 4 through its through hole. The guide rods 4 guide the movement of the connecting plate 11 (including the pressure plate) to prevent the connecting plate 11 from being offset during the sliding process. The guide rods 4 and the connecting plate 11 are in a vertical state. The plug rod 201 of the driving cylinder 2 is located between the two parallel guide rods 4, and the plug rod 201 and the guide rod 4 are in a parallel state. The guide rod 4 is in a state perpendicular to the connecting plate 11.

[0044] In this device, a mounting sleeve 21 is provided on the connecting plate 11, and the mounting sleeve 21 and the connecting sleeve 10 are respectively located at two ends of the connecting plate 11, and an inner ring groove 2101 is provided on the mounting sleeve 21. A protruding rotating shaft 1302 is provided on the pressing plate, and the protruding rotating shaft 1302 is perpendicular to the pressing plate. The extrusion plane 1301 and the protruding rotating shaft 1302 are respectively located on both sides of the pressing plate. A limiting ring sleeve 22 is fixed on the protruding rotating shaft 1302, and the limiting ring sleeve 22 is located in the inner ring groove 2101. The inner ring groove 2101 and the limiting ring sleeve 22 limit the pressing block 13 to prevent the pressing block 13 from detaching from the connecting sleeve 10.

[0045] A connecting sleeve 10 is provided on the connecting plate 11, and the connecting sleeve 10 is matched with the plug rod 201. In the accompanying drawings, the plug rod 201 and the connecting sleeve 10 are not fixed together, but in reality they are fixed together.

[0046] Specifically, the connecting sleeve 10 and the plug rod 201 can be matched together by threaded connection, or directly welded together, and the connecting sleeve 10 and the plug rod 201 are respectively located on both sides of the connecting plate 11.

[0047] As attached Figure 1 ~Attached Figure 6As shown, it also includes a grating component 5, which is arranged on a frame 6.

[0048] The specific function of the grating assembly 5 is to form a detection light curtain on the frame 6, and the pressure plate, the supporting plate 16, the valve cover 14 and the valve body 15 are all located in the detection light curtain. If the detection light curtain senses that an object (possibly the user's body) enters the detection light curtain during the operation of the driving cylinder 2 or the servo motor 20, the driving cylinder 2 and the servo motor 20 will be shut down in time to avoid personal injury accidents and damage to mechanical equipment.

[0049] As attached Figure 1 ~Attached Figure 6 As shown, a connecting shaft 17 is provided on the supporting plate 16 , and a servo motor 20 is provided on the frame 6 , and the servo motor 20 cooperates with the connecting shaft 17 on the supporting plate 16 .

[0050] Specifically, the connecting shaft 17 is perpendicular to the supporting plate 16 , and the waist-shaped through holes 1602 on the supporting plate 16 are distributed in a ray shape around the connecting shaft 17 .

[0051] As attached Figure 1 ~Attached Figure 6 As shown, it also includes a reducer 8 and an encoder 18. One end of the reducer 8 is matched with the connecting shaft 17, and the other end of the reducer 8 is matched with the shaft of the servo motor 20. The encoder 18 is set on the frame 6 or the reducer 8, and the connecting shaft 17 passes through the encoder 18.

[0052] Specifically, the servo motor 20 cooperates with the connecting shaft 17 on the support plate 16 through the reducer 8. The servo motor 20 drives the reducer 8 to run, and the reducer 8 drives the connecting shaft 17 to rotate. The rotation of the connecting shaft 17 drives the support plate 16 to rotate. The rotation center of the support plate 16 is the center line of the connecting shaft 17. In order to record the rotation direction and rotation amount of the support plate 16, an encoder 18 is further arranged on the reducer 8 or the frame 6. The connecting shaft 17 passes through the encoder 18. The encoder 18 monitors the support plate 16 by monitoring the connecting shaft 17.

[0053] In this press equipment, since the support plate 16 is in a state that can be rotated as needed, and the pressure plate of the connecting plate 11 is also rotatably installed on the connecting plate 11, the pressure plate can rotate relative to the connecting plate 11, and the rotation center of the pressure plate is the central axis of the pressure plate itself. Since the support plate 16 can rotate, the pressure plate can also rotate, so the valve cover 14 and the valve body 15 clamped between the pressure plate and the support plate 16 can also rotate synchronously, and the valve cover 14 and the valve body 15 synchronously follow the rotation, which can facilitate the robot or workers to manually tighten the nuts between the valve cover 14 and the valve body 15, and the pressure plate will not affect the clamping of the valve body 15 and the valve cover 14 by the pressure plate and the support plate 16 during the rotation relative to the connecting plate 11.

[0054] In this device, since a reducer 8 is installed, the existence of the reducer 8 can more accurately control the rotation of the support plate 16. At the same time, when the manipulator or the operator is tightening the bolts on the valve body 15, the reducer 8 can apply a reverse force to the support plate 16 to interlock. Since the rotation speed of the support plate 16 is not high, there is enough time to use a torque wrench to tighten the nut of the valve during the rotation process. At the same time, the rotation direction is opposite to the direction of the tightening force, which can make the operator save more effort when tightening the nut.

[0055] In this equipment, when an operator or a manipulator screws the nut between the valve body 15 and the valve cover 14, a force is applied to the support plate 16. The force is opposite to the direction of rotation of the support plate 16. The force is eventually transmitted to the servo motor 20 via the connecting shaft 17, causing the rotation speed of the servo motor 20 to fluctuate. The rotation speed fluctuation of the servo motor 20 will drive the rotation speed fluctuation of the connecting shaft 17. The rotation speed fluctuation of the connecting shaft 17 will be sensed by the encoder 18. Therefore, the monitoring of this fluctuation can be used to determine whether the nut is leaking. If there is a fluctuation, it means that the nut is not leaking; if there is no fluctuation, it means that the nut is leaking.

[0056] As attached Figure 1 ~Attached Figure 6 As shown, a bearing frame 7 and a suspension frame 3 are arranged on the frame 6 , a supporting plate 16 is rotatably arranged on the bearing frame 7 , and a driving cylinder 2 is arranged on the suspension frame 3 .

[0057] Specifically, the suspension frame 3 is arranged on the carrier frame 7, the servo motor 20, the reducer 8 and the supporting plate 16 are all located on the carrier frame 7, and the driving cylinder 2 and the guide rod 4 are all located on the suspension frame 3. In the present press equipment, the suspension frame 3 is provided with a guide sleeve 9, and the guide rod 4 and the guide sleeve 9 are slidably matched together.

[0058] As attached Figure 1 ~Attached Figure 6As shown, it also includes a control host 1, and the driving cylinder 2, the grating component 5 and the servo motor 20 are all connected to the control host 1.

[0059] The signal acquired by the grating component 5 is transmitted to the control host 1 , and the operation of the driving cylinder 2 and the servo motor 20 is controlled by the control host 1 .

[0060] The above description is only a preferred embodiment of the present invention, and does not limit the patent protection scope of the present invention. Any equivalent transformations made using the contents of the present invention specification, directly or indirectly used in other related technical fields, are also included in the protection scope of the present invention.

Claims

1. A press device for installing valve nuts, characterized in that: It includes a frame, a supporting plate, a driving cylinder and a pressure plate, wherein the supporting plate is rotatably arranged on the frame, the driving cylinder is arranged on the frame, the pressure plate is directly or indirectly matched with the plug rod of the driving cylinder, an extrusion plane is arranged on the pressure plate, a supporting plane is arranged on the supporting plate, and the extrusion plane and the supporting plane are in a parallel state.

2. The press device for installing valve nuts according to claim 1, characterized in that: It also includes a pressure sensor, which is arranged on the pressure plate.

3. The press device for installing valve nuts according to claim 1, characterized in that: It also includes a guide rod and a connecting plate, wherein the guide rod is arranged on the frame, the pressure plate is rotatably mounted on the connecting plate, the connecting plate and the guide rod are slidably matched together, and the plug rod of the driving cylinder is matched together with the connecting plate.

4. The press device for installing valve nuts according to claim 3, characterized in that: The connecting plate is provided with a connecting sleeve, and the connecting sleeve is matched with the plug rod.

5. The press device for installing valve nuts according to claim 1, characterized in that: It also includes a grating component, which is arranged on the frame.

6. The press device for installing valve nuts according to claim 1, characterized in that: The supporting plate is provided with a connecting shaft, the frame is provided with a servo motor, and the servo motor cooperates with the connecting shaft on the supporting plate.

7. The press device for installing valve nuts according to claim 6, characterized in that: It also includes a reducer and an encoder, one end of the reducer cooperates with the connecting shaft, and the other end of the reducer cooperates with the shaft of the servo motor. The encoder is arranged on the frame or on the reducer, and the connecting shaft passes through the encoder.

8. The press device for installing valve nuts according to claim 1, characterized in that: The frame is provided with a bearing frame and a suspension frame, the supporting plate is rotatably arranged on the bearing frame, and the driving cylinder is arranged on the suspension frame.

9. The press device for installing valve nuts according to claim 1, characterized in that: It also includes a control host, and the driving cylinder is electrically connected to the control host.

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