Valve stem both ends drilling device with transposition adjusting mechanism

Abstract

The present application relates to the technical field of valve rod drilling, and discloses a valve rod two-end drilling device with transposition adjusting mechanism, which comprises a fixing device, a drilling device and a straight-bending device, the fixing device can fix the valve rod; the drilling device is arranged on the top surface of the bottom of the fixing device and close to the rear end, and the drilling device can cooperate with the fixing device to drill the two ends of the straight pipe valve rod or the straight-bending valve rod; the straight-bending device is arranged on the top surface of the bottom of the fixing device and at the front end center, and the straight-bending device can cooperate with the fixing device to straight-bend the straight pipe valve rod; the fixing device, the drilling device and the straight-bending device are integrated to realize the integration of valve rod processing, the arc-shaped clamping plate cooperates with the fixing strip to ensure accurate fixing and avoid processing shaking, the fixing device is 180 degrees rotatable, the drilling device is multidirectional adjustable, and the straight-bending device is 90 degrees rotatable, so that the adaptability and flexibility of the straight pipe valve rod and the straight-bending valve rod are improved, the clamping steps are reduced, and the processing efficiency and quality are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valve rod drilling, in particular to a valve rod two-end drilling device with transposition adjusting mechanism. BACKGROUND

[0002] In the field of valve manufacturing, the valve rod is the core component for controlling the opening and closing of the valve, and the drilling precision of its two ends directly affects the assembly quality and performance of the valve. Whether it is a straight pipe valve rod or a straight bend valve rod, drilling treatment needs to be carried out at specific positions on both ends to meet the connection requirements with other components.

[0003] At present, the drilling processing of the two ends of the valve rod in the industry mostly adopts a decentralized processing mode: the fixing, drilling, straightening and bending processes need to be completed on different equipment. For example, when processing a straight pipe valve rod, it needs to be positioned on a fixing device first and then drilled at one end, and then transferred to another work station for processing the other end by manual or auxiliary equipment. If the straight pipe valve rod needs to be processed into a straight bend valve rod and drilled, it needs to be bent by additional pipe bending equipment and then transferred to the drilling equipment for processing. This decentralized processing method not only requires the provision of multiple special equipment, increasing production investment, but also causes complicated processing flow and affects processing precision due to the multiple transfers and repeated clamping of the workpiece.

[0004] In the fixing link, the existing valve rod fixing device mostly uses a flat clamping plate or a simple fixture, which is difficult to closely fit with the circular outer wall of the valve rod. For the valve rod with smooth surface, it is easy to produce shaking or axial displacement during processing due to cutting force, resulting in problems such as drilling position deviation and insufficient hole diameter precision. Although some devices add positioning structures, they lack adaptive design with the features of the valve rod outer wall (such as annular grooves), which makes it difficult to achieve accurate positioning and further affects the stability of processing quality.

[0005] In addition, the existing equipment has poor adaptability to straight pipe valve rods and straight bend valve rods, and needs to replace the fixture or adjust the equipment parameters for different types of valve rods, which lacks flexibility and universality and is difficult to meet the diversified processing needs. SUMMARY

[0006] The purpose of the present application is to provide a valve rod two-end drilling device with transposition adjusting mechanism to solve the problems raised in the background.

[0007] In order to achieve the above object, the present application provides the following technical scheme: a valve rod two-end drilling device with transposition adjusting mechanism, comprising: a fixing device, a drilling device and a straight bending device, the fixing device can fix the valve rod; the drilling device is arranged on the top surface of the bottom of the fixing device near the rear end, and the drilling device can cooperate with the fixing device to drill the two ends of the straight pipe valve rod or the straight bending valve rod; the straight bending device is arranged on the top surface of the bottom of the fixing device at the front end center, and the straight bending device can cooperate with the fixing device to straighten the straight pipe valve rod.

[0008] Preferably, in order to rotate and exchange the two ends of the straight pipe valve rod or the straight bending valve rod, the fixing device comprises: a support platform, a concave long plate, a moving groove, a three-section electric push rod, a moving block, a sliding block, a first brake motor, a rotating plate, a first driving assembly, a clamping plate and a fixing strip, the support platform is used for supporting the whole device; the concave long plate is arranged on the top surface of the right end of the support platform near the center, and the inner wall of the concave long plate is provided with a moving groove on both sides; the three-section electric push rod is arranged on the top surface center of the concave long plate; the moving block is arranged on the pushing end of the three-section electric push rod; the sliding block is two in number and is arranged on the left and right center of the outer wall of the moving block; the first brake motor is arranged on the front center of the moving block; the rotating plate is arranged on the rear center of the moving block through a bearing, the output end of the first brake motor is connected and fixed with the front center of the outer wall of the rotating plate through the outer wall of the moving block, and the first brake motor can drive the rotating plate to rotate; the first driving assembly is arranged on the rear side of the outer wall of the rotating plate, and the first driving assembly can rotate through the rotating plate; the clamping plate is two in number and is arranged on the two moving ends of the first driving assembly, and the first driving assembly can drive the two clamping plates to approach and expand each other; the fixing strip is two in number and is arranged in the center of the two clamping plates.

[0009] Preferably, in order to fix the straight pipe valve stem or straight bend valve stem, the first driving assembly comprises: a first bearing seat, a bearing plate, a lead screw, a first gear, a second brake motor, a second gear, a lead screw nut, a moving rod, a T-shaped moving block and a limiting long rod, the first bearing seat is two in number and is arranged on the upper and lower ends of the rear side of the outer wall of the rotating plate; the bearing plate is arranged at one end of the two first bearing seats; the lead screw is two in number and is sleeved on the rotating end of one side of the two first bearing seats, and the two lead screws are in opposite directions; the first gear is arranged between the two lead screws; the second brake motor is arranged at one end of the front side of the bottom of the outer wall of the bearing plate; the second gear is arranged on the rotating end of the second brake motor, the second gear is meshed with the first gear, and the second brake motor can drive the second gear to rotate the first gear to drive the two lead screws to rotate; the lead screw nut is two in number and is sleeved on the outer wall of the two lead screws, and the two lead screw nuts can rotate and move on the outer wall of the two lead screws; the moving rod is two in number and is arranged at one end of the two lead screw nuts, and the outer wall of the two moving rods is connected and fixed with the two clamping plates on the rear side, respectively; the T-shaped moving block is two in number and is arranged on the rear side center of the inner wall of the two moving rods; the limiting long rod is arranged on the rear side center of the outer wall of the bearing plate, the two T-shaped moving blocks are sleeved in the limiting long rod, and the two T-shaped moving blocks can move in the inner wall of the limiting long rod.

[0010] Preferably, the limiting long rod and the two T-shaped moving blocks are used as support points, and the two lead screws rotate to drive the two lead screw nuts to move, so that the two clamping plates are brought close to each other and expanded by the two moving rods.

[0011] Preferably, in order to straight bend the straight pipe valve stem, the straight bending device comprises: a first electric push rod, a support plate, a groove, a second electric push rod, a moving plate, a hydraulic push rod, a push head, a rotating column and an infrared sensor, the first electric push rod is arranged on the top surface of the support platform close to the front end; the support plate is arranged on the pushing end of the first electric push rod, and a groove is formed in one corner of the front end of the top surface of the support plate; the second electric push rod is arranged on the other corner of the front end of the top surface of the support plate; the moving plate is arranged on the pushing end of the second electric push rod, and the bottom end of the moving plate is embedded in one end of the groove, and the moving plate can move in the groove by the second electric push rod; the hydraulic push rod is arranged on the rear side of the outer wall of the moving plate; the push head is arranged on the pushing end of the hydraulic push rod; the rotating column is a plurality of, and is embedded in the rear side and the right side of the outer wall of the push head in an L shape, and the plurality of rotating columns can rotate; the infrared sensor is arranged on one corner of the top end of the rear side of the outer wall of the push head.

[0012] Preferably, the straight pipe valve rod is fixed by the fixing device, the pushing head is moved to the extending end of the valve rod by the hydraulic push rod, the rotating column at the rear side of the pushing head first contacts and exerts pressure on the outer wall of the valve rod, and the limiting action of the right rotating column causes the extending end of the valve rod to gradually bend to 90 degrees, thereby completing the straight bending process.

[0013] Preferably, in order to drill the straight bending end of the straight bending valve rod, the drilling device comprises a long plate, a second driving assembly and an automatic drilling machine, the long plate is arranged at the center of the rear end of the top surface of the support platform, the second driving assembly is arranged at the top rear end of the long plate, and the automatic drilling machine is arranged at the pushing end of the second driving assembly, and the second driving assembly can drive the automatic drilling machine to rotate by 90 degrees.

[0014] Preferably, in order to drive the automatic drilling machine to rotate by 90 degrees, the second driving assembly comprises an arc-shaped rack, a sliding groove, an arc-shaped block, a second bearing seat, a third gear, a flat brake motor and a third electric push rod, the arc-shaped rack is arranged at the top rear end of the long plate, sliding grooves are formed at the upper and lower ends of the tooth body of the arc-shaped rack, the number of arc-shaped blocks is two, the two arc-shaped blocks are respectively embedded in the two sliding grooves, and the two arc-shaped blocks can be limited to move along the two sliding grooves, the number of second bearing seats is two, the two second bearing seats are respectively arranged at one end of the two arc-shaped blocks, the third gear is arranged between the rotating ends of the two second bearing seats, the third gear is meshed with the arc-shaped rack, the flat brake motor is arranged at the bottom of the rotating end of one of the second bearing seats, the output end of the flat brake motor is fixedly connected with the center of the bottom surface of the third gear, the flat brake motor can drive the third gear to rotate, so as to move to one end of the arc-shaped rack to rotate by degrees, and the third electric push rod is arranged on the top surface of the other second bearing seat, and the pushing end of the third electric push rod is fixedly connected with the automatic drilling machine.

[0015] Preferably, the flat brake motor is started to drive the third gear to roll along the arc-shaped rack, drive the arc-shaped block to move along the sliding groove, and make the automatic drilling machine rotate by 90 degrees synchronously with the second driving assembly, so that the drill bit can be aligned with the bent end of the straight bending valve rod.

[0016] Compared with the prior art, the beneficial effects of the present application are:

[0017] 1. The device integrates multiple functions such as fixing, drilling and straight bending, can simultaneously meet the drilling requirements of the two ends of the straight pipe valve rod and the straight bending valve rod, can directly drill the straight pipe valve rod after straight bending, does not need to replace equipment or transfer workpieces, simplifies the process, has certain convenience and universality.

[0018] 2. The clamping plate in the fixing device is designed in an arc shape, which can closely fit the circular structure of the valve rod, cooperate with the embedded structure of the annular groove on the outer wall of the valve rod and the fixing strip, realize accurate positioning and firm fixing of the valve rod, effectively avoid shaking or displacement of the valve rod during processing, and fix the valve rod to improve the processing quality.

[0019] 3. The drilling device is designed to be adjustable, which can adapt to the processing of valve rods of different specifications through the cooperation of the second electric push rod, the hydraulic push rod and other components; the automatic drilling machine in the straight bending device can realize 90-degree rotation through the second driving assembly, meeting the drilling needs of different angle ends of the straight bending valve rod; the fixing device can realize 180-degree rotation of the rotating plate through the first brake motor, facilitating transposition processing of the two ends of the valve rod without the need for re-clamping, and improving the adaptability of the device to various valve rod types and processing scenes.

[0020] In summary, the present application integrates the functions of fixing, drilling and straight bending, realizes valve rod processing integration, ensures accurate fixing through the cooperation of the arc-shaped clamping plate and the fixing strip, avoids processing shaking, and improves the adaptability and flexibility of the device to straight pipes and straight bending valve rods through the design of 180-degree rotation of the fixing device, multi-directional adjustment of the drilling device and 90-degree rotation of the straight bending device, reduces the clamping steps, and improves the processing efficiency and quality. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic diagram of the present application;

[0022] Figure 2 is a structural schematic diagram of the fixing device of the present application;

[0023] Figure 3 is an enlarged structural schematic diagram of A in Figure 2

[0024] Figure 4 is a structural schematic diagram of the moving block connecting assembly of the fixing device of the present application;

[0025] Figure 5 is a structural schematic diagram of the first driving assembly position of the fixing device of the present application;

[0026] Figure 6 is a structural schematic diagram of the first driving assembly of the fixing device of the present application;

[0027] Figure 7 is a sectional structural schematic diagram of the bearing plate of the fixing device of the present application;

[0028] Figure 8 is a structural schematic diagram of the drilling device position of the present application;

[0029] Figure 9 is an enlarged structural schematic diagram of B in Figure 8 ​​

[0030] Figure 10 Figure 1 is a schematic view of the top section structure of the pushing head of the drilling device of the present application;

[0031] Figure 11 Figure 2 is a schematic view of the position structure of the straight-bending device of the present application;

[0032] Figure 12 Figure 3 is a schematic view of the enlarged structure at C in Figure 2; Figure 11

[0033] Figure 13 Figure 4 is a schematic view of the second driving assembly of the straight-bending device of the present application.

[0034] In the figure: 1, fixing device; 2, straight-bending device; 3, drilling device; 11, support platform; 12, concave long plate; 13, moving groove; 14, three-section electric push rod; 15, moving block; 16, sliding block; 17, first brake motor; 18, rotating plate; 19, first bearing seat; 110, bearing plate; 111, screw rod; 112, first gear; 113, second brake motor; 114, second gear; 115, screw rod nut; 116, moving rod; 117, T-shaped moving block; 118, limiting long rod; 119, clamping plate; 120, fixed bar; 21, first electric push rod; 22, support plate; 23, groove; 24, second electric push rod; 25, moving plate; 26, hydraulic push rod; 27, pushing head; 28, rotating column; 29, infrared sensor; 31, long plate; 32, arc-shaped rack; 33, sliding groove; 34, arc-shaped block; 35, second bearing seat; 36, third gear; 37, flat brake motor; 38, third electric push rod; 39, automatic drilling machine. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0036] Please refer to Figures 1-13 ​The application provides a valve rod two-end drilling device with transposition adjusting mechanism, which comprises a fixing device 1, a drilling device 3 and a straight bending device 2. The fixing device 1 can fix the valve rod and rotate the valve rod by 180 degrees, so that the valve rod is transposed. The drilling device 3 has certain universality and flexibility. The bottom of the fixing device 1 supports the drilling device 3 and the straight bending device 2. The drilling device 3 is arranged on the top surface of the bottom of the fixing device 1 close to the rear end. The drilling device 3 can cooperate with the fixing device 1 to drill the two ends of the straight pipe valve rod or the straight bending valve rod. The straight bending device 2 is arranged on the top surface of the bottom of the fixing device 1 at the front end center. The straight bending device 2 can cooperate with the fixing device 1 to straight bend the straight pipe valve rod.

[0037] As a preferred solution, further, as Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 7As shown, the fixing device 1 comprises a support platform 11, a concave long plate 12, a moving groove 13, a three-section electric push rod 14, a moving block 15, a sliding block 16, a first brake motor 17, a rotating plate 18, a first driving assembly, a clamping plate 119 and a fixing strip 120. The support platform 11 is used for supporting the whole device and has a certain bearing capacity and supporting force. The concave long plate 12 is arranged at the top surface right end near the center of the support platform 11, and the inner wall of the concave long plate 12 is provided with the moving groove 13 on both sides. The three-section electric push rod 14 is arranged at the top surface center in the concave long plate 12 and has a certain self-locking capacity. The moving block 15 is arranged at the pushing end of the three-section electric push rod 14, and the moving block 15 has a certain supporting and bearing capacity for the connected parts. The sliding block 16 is two in number and is arranged at the left and right center of the outer wall of the moving block 15, and the two sliding blocks 16 are made of wear-resistant material. The first brake motor 17 is arranged at the front center of the moving block 15 and has a certain self-locking capacity, so that the rotating plate 18 can stably work. The rotating plate 18 is arranged at the rear center of the moving block 15 through a bearing, and the output end of the first brake motor 17 is connected and fixed with the front center of the outer wall of the rotating plate 18 through the outer wall front side of the moving block 15. The first brake motor 17 can drive the rotating plate 18 to rotate. The first driving assembly is arranged at the rear side of the outer wall of the rotating plate 18 and can rotate through the rotating plate 18. The clamping plate 119 is two in number and is arranged at the two moving ends of the first driving assembly. The first driving assembly can drive the two clamping plates 119 to approach and expand each other. The clamping plate 119 is designed as an arc shape, which can better fit the circular structure of the valve rod and better contact and fix it. The fixing strip 120 is two in number and is arranged at the center of the two clamping plates 119. The valve rod body is provided with an annular groove, and the fixing strip 120 is embedded in the annular groove of the outer wall of the valve rod body to better fix it.

[0038] As a preferred solution, further as Figure 5 , Figure 6 and Figure 7As shown, the first driving assembly comprises: a first bearing seat 19, a bearing plate 110, a lead screw 111, a first gear 112, a second brake motor 113, a second gear 114, a lead screw nut 115, a moving rod 116, a T-shaped moving block 117 and a limiting long rod 118. The first bearing seat 19 is two in number and is arranged on the upper and lower ends of the rear side of the outer wall of the rotating plate 18. The bearing plate 110 is arranged at one end of the two first bearing seats 19. The bearing plate 110 has a certain bearing capacity and supporting force for its connected components. The lead screw 111 is two in number and is sleeved on the rotating end of one side of the two first bearing seats 19. The two lead screws 111 are in opposite directions. In the rotating process, the two lead screws 111 in opposite directions can drive the two lead screw nuts 115 to move close to and away from each other. The first gear 112 is arranged between the two lead screws 111. The second brake motor 113 is arranged at one end of the front side of the bottom of the outer wall of the bearing plate 110. The second brake motor 113 has a certain self-locking ability and can make the two clamping plates 119 self-lock and fix the valve rod through the second gear 114. The second gear 114 is arranged on the rotating end of the second brake motor 113. The second gear 114 is meshed with the first gear 112. The second brake motor 113 can drive the second gear 114 to make the first gear 112 drive the two lead screws 111 to rotate. The diameter of the second gear 114 is smaller than that of the second brake motor 113, so as to ensure the normal operation of the second gear 114. The lead screw nut 115 is two in number and is sleeved on the outer wall of the two lead screws 111. The two lead screw nuts 115 can rotate and move on the outer wall of the two lead screws 111, respectively. The moving rod 116 is two in number and is arranged at one end of the two lead screw nuts 115. The outer wall rear side of the two moving rods 116 is connected and fixed with the two clamping plates 119, respectively. The T-shaped moving block 117 is two in number and is arranged at the center of the inner wall rear side of the two moving rods 116. The two T-shaped moving blocks 117 cooperate with the limiting long rod 118 to support the stress points of the limiting long rod 118. The limiting long rod 118 is arranged at the center of the rear side of the outer wall of the bearing plate 110. The two T-shaped moving blocks 117 are sleeved in the limiting long rod 118. The two T-shaped moving blocks 117 can move in the inner wall of the limiting long rod 118. The limiting long rod 118 and the two T-shaped moving blocks 117 are used as support points. The two lead screws 111 rotate to drive the two lead screw nuts 115 to move, so as to drive the two clamping plates 119 to move close to and away from each other through the two moving rods 116.

[0039] As a preferred solution, further, Figure 8 , Figure 9 and Figure 10As shown, the straight bending device 2 comprises: a first electric push rod 21, a support plate 22, a groove 23, a second electric push rod 24, a moving plate 25, a hydraulic push rod 26, a pushing head 27, a rotating column 28 and an infrared sensor 29. The first electric push rod 21 is arranged on the top surface of the support platform 11 near the front end. The first electric push rod 21 can drive the support plate 22 to move up and down so that the center of the pushing head 27 and the center of the valve rod are on the same horizontal plane. The support plate 22 is arranged on the pushing end of the first electric push rod 21. The front corner of the top surface of the support plate 22 is provided with the groove 23. The support plate 22 has a certain supporting force and bearing force on the top connecting component. The second electric push rod 24 is arranged on the other corner of the front end of the top surface of the support plate 22. The second electric push rod 24 is three-sectioned, so that the moving path of the moving plate 25 is longer. The moving plate 25 is arranged on the pushing end of the second electric push rod 24, and the bottom end of the moving plate 25 is embedded in one end of the groove 23. The moving plate 25 can be limitedly moved in the groove 23 by the second electric push rod 24. The pushing head 27 is used for straight bending the straight pipe valve rod. The moving plate 25 has a certain supporting force and bearing force on the hydraulic push rod 26 through the groove 23. The hydraulic push rod 26 is arranged on the back side of the outer wall of the moving plate 25. The hydraulic push rod 26 has a certain pushing force. The pushing head 27 is arranged on the pushing end of the hydraulic push rod 26. The rotating column 28 is in L shape and is embedded in the back side and the right side of the outer wall of the pushing head 27. The rotating column 28 can rotate. The rotating column 28 can reduce the hard friction in the process of straight bending the straight pipe valve rod, so as to prevent the straight bending from damaging the outer wall of the valve rod. The infrared sensor 29 is arranged on the top corner of the back side of the outer wall of the pushing head 27. The infrared sensor 29 is electrically connected with the second electric push rod 24. The infrared sensor 29 is the power source signal of the second electric push rod 24.

[0040] More specifically, when the straight pipe valve rod needs to be straight bent, the straight pipe valve rod is first fixed by the fixing device 1, and the extension end of the valve rod to be straight bent is extended out of the clamping plate 119. The first electric push rod 21 is started to drive the support plate 22 to ascend and descend, so that the center of the pushing head 27 is aligned with the center of the straight pipe valve rod. The infrared sensor 29 detects the root position of the extension end of the straight pipe valve rod and sends a signal to the second electric push rod 24. The second electric push rod 24 drives the moving plate 25 to move along the groove 23, so that the pushing head 27 is aligned with the straight bending starting point of the valve rod. The hydraulic push rod 26 is started to drive the pushing head 27 to move towards the extension end of the valve rod. The rotating column 28 on the back side of the pushing head 27 first contacts and applies pressure to the outer wall of the valve rod. In combination with the limiting action of the rotating column 28 on the right side, the extension end of the valve rod is gradually bent to 90 degrees, and the straight bending process is completed. During the straight bending process, the rotating column 28 rotates synchronously with the bending of the valve rod, so as to reduce the friction damage to the outer wall of the valve rod.

[0041] As a preferred solution, further, Figure 11 and Figure 12As shown in the figure, the drilling device 3 comprises a long plate 31, a second driving assembly and an automatic drilling machine 39. The long plate 31 is arranged at the center of the rear end of the top surface of the support platform 11. The second driving assembly is arranged at the top rear end of the long plate 31, and the long plate 31 has a certain supporting and bearing effect on the second driving assembly. The automatic drilling machine 39 is arranged at the pushing end of the second driving assembly, and the second driving assembly can drive the automatic drilling machine 39 to rotate by 90 degrees. The automatic drilling machine 39 can drill holes at both ends of the straight pipe valve rod and the straight and bent valve rod.

[0042] As a preferred solution, further, as shown in the figure, Figure 12 and Figure 13 As shown in the figure, the second driving assembly comprises an arc-shaped rack 32, a sliding groove 33, an arc-shaped block 34, a second bearing seat 35, a third gear 36, a flat brake motor 37 and a third electric push rod 38. The arc-shaped rack 32 is arranged at the top rear end of the long plate 31. The tooth body of the arc-shaped rack 32 is provided with a sliding groove 33 at the upper and lower ends, and the arc-shaped rack 32 is bent by 90 degrees. The arc-shaped block 34 is two in number and is respectively embedded in the two sliding grooves 33. The two arc-shaped blocks 34 can respectively move along the two sliding grooves 33. The movement of the arc-shaped block 34 along the inner wall of the sliding groove 33 can make the automatic drilling machine 39 rotate by 90 degrees. The second bearing seat 35 is two in number and is respectively arranged at one end of the two arc-shaped blocks 34. The third gear 36 is arranged between the rotating ends of the two second bearing seats 35, and the third gear 36 can rotate through the two second bearing seats 35. The third gear 36 is meshed with the arc-shaped rack 32. The flat brake motor 37 is arranged at the bottom of the rotating end of one second bearing seat 35. The flat brake motor 37 has a certain self-locking ability and occupies a small area. The output end of the flat brake motor 37 is connected and fixed with the center of the bottom surface of the third gear 36. The flat brake motor 37 can drive the third gear 36 to rotate, so as to move to one end of the arc-shaped rack 32 to rotate by 90 degrees. The third electric push rod 38 is arranged on the top surface of the other second bearing seat 35, and the pushing end of the third electric push rod 38 is connected and fixed with the automatic drilling machine 39. Thus, the flat brake motor 37 drives the automatic drilling machine 39 to rotate by 90 degrees. The third electric push rod 38 is three-sectioned, can make the automatic drilling machine 39 have a longer moving distance, and has a certain stability, so as to ensure the smooth operation of the automatic drilling machine 39.

[0043] More specifically, when drilling the end of the straight pipe valve rod, after the fixing device 1 clamps the straight pipe valve rod and adjusts to the drilling position, the flat brake motor 37 is in the initial state (the automatic drilling machine 39 is horizontally oriented), the third electric push rod 38 is started, drives the automatic drilling machine 39 to feed to the end of the straight pipe valve rod, and the drill bit rotates at high speed to complete one-end drilling. After one-end drilling is completed, the fixing device 1 drives the valve rod to rotate by 180 degrees, and the third electric push rod 38 drives the automatic drilling machine 39 to feed again to complete the other-end drilling.

[0044] When drilling holes at the bend end of a straight-bend valve stem: After the fixing device 1 clamps the straight-bend valve stem (which has already undergone straight bending) and adjusts it to the drilling position:

[0045] If drilling is required at the straight pipe end, the operation is the same as for "drilling the straight pipe valve stem". The automatic drilling machine 39 is kept horizontal and works with the third electric push rod 38 to complete the drilling. If drilling is required at the bend end, the flat brake motor 37 is started, driving the third gear 36 to roll along the arc rack 32, which in turn drives the arc block 34 to move along the slide groove 33, so that the automatic drilling machine 39 rotates 90 degrees synchronously with the second drive assembly until the drill bit is aligned with the bend end of the straight-bend valve stem. The flat brake motor 37 self-locks, locking the angle of the automatic drilling machine 39. The third electric push rod 38 drives the automatic drilling machine 39 to feed and complete the drilling at the bend end. After drilling is completed, the third electric push rod 38 drives the automatic drilling machine 39 to retreat, and the flat brake motor 37 drives in the opposite direction to reset the automatic drilling machine 39 to a horizontal state.

[0046] The detailed connection means is the known technology in the field, and the working principle and process are mainly introduced as follows. The straight pipe valve rod and straight bend valve rod are drilled at both ends. The straight pipe valve rod is placed in the clamping plate 119 at the bottom, and the valve rod body itself is provided with an annular groove and a clamping strip 120. The second brake motor 113 drives the two clamping plates 119 to approach each other to fix the straight pipe valve rod. The three-section electric push rod 14 drives the moving block 15 to move the fixed straight pipe valve rod upward, so that the center of the straight pipe valve rod is aligned with the center of the drill bit of the automatic drilling machine 39. The third electric push rod 38 drives the automatic drilling machine 39 to cooperate with the three-section electric push rod 14 to drill one end of the straight pipe valve rod. When the drilling of one end of the straight pipe valve rod is completed, the first brake motor 17 drives the rotating plate 18 to rotate the straight pipe valve rod by 180 degrees, so as to drill the other end of the straight pipe valve rod. For drilling both ends of the straight bend valve rod, the straight pipe valve rod to be straightened is placed in the clamping plate 119 at the bottom. The center of the push head 27 is driven by the first electric push rod 21 to be at the same water level as the center of the straight pipe valve rod to be straightened. The left end extension of the straight pipe valve rod is the length to be straightened. The infrared sensor 29 recognizes the left end extension of the straight pipe valve rod, and the infrared sensor 29 senses the second electric push rod 24 to drive the infrared sensor 29 and the straight pipe valve rod extension root to be on the same parallel line. The hydraulic push rod 26 drives the push head 27 to be straightened by extruding the rear side of the push head 27 through the rotating column 28. The right side of the push head 27 is further straightened and shaped by cooperating with the rotating column 28. The rotating column 28 prevents excessive friction damage to the outer wall of the valve rod. The rotating force of the rotating column 28 offsets excessive direct friction. The straightened valve rod is returned to the original position. The three-section electric push rod 14 drives the moving block 15 to align the center of the turning point of the straight bend valve rod with the center of the drill bit of the automatic drilling machine 39. The first brake motor 17 drives the straight bend valve rod to rotate by 180 degrees. The third electric push rod 38 drives the automatic drilling machine 39 to drill the straight pipe end of the straight bend valve rod. After drilling, the first brake motor 17 drives the straight bend valve rod to rotate by 180 degrees to return to the original position. The flat brake motor 37 drives the third electric push rod 38 to move to one end of the arc rack 32, so that the center of the drill bit of the automatic drilling machine 39 is aligned with the center of the straight bend end of the straight bend valve rod. The third electric push rod 38 drives the automatic drilling machine 39 to drill the straight bend end of the straight bend valve rod. The above is the drilling process of both ends of the straight bend valve rod. The present application has certain universality and flexibility, and improves the quality of straightening and drilling of the straight pipe valve rod.

[0047] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A valve stem both ends drilling device with transposition adjusting mechanism, comprising: a fixing device (1) capable of fixing the valve stem; a drilling device (3) arranged on the top surface of the bottom of the fixing device (1) near the rear end, capable of cooperating with the fixing device (1) to drill both ends of the straight pipe valve stem or the straight bend valve stem; a straight bending device (2) arranged on the top surface of the bottom of the fixing device (1) at the front end center, capable of cooperating with the fixing device (1) to straight bend the straight pipe valve stem; the fixing device (1) comprising: a support platform (11) for supporting the whole device; a concave long plate (12) arranged on the top surface of the right end near the center of the support platform (11), the inner wall of the concave long plate (12) being provided with a moving groove (13) on both sides; a three-section electric push rod (14) arranged on the top surface center in the concave long plate (12); a moving block (15) arranged on the pushing end of the three-section electric push rod (14); two sliders (16) arranged on the left and right center of the outer wall of the moving block (15); a first brake motor (17) arranged on the front center of the moving block (15); a rotating plate (18) arranged on the rear center of the moving block (15) through a bearing, the output end of the first brake motor (17) penetrating the front side of the outer wall of the moving block (15) and being connected and fixed with the front center of the outer wall of the rotating plate (18), the first brake motor (17) being capable of driving the rotating plate (18) to rotate; a first drive assembly arranged on the rear side of the outer wall of the rotating plate (18) and capable of rotating through the rotating plate (18); two clamping plates (119) arranged on the two moving ends of the first drive assembly, the first drive assembly being capable of driving the two clamping plates (119) to approach and expand each other; two fixing strips (120) arranged in the center of the two clamping plates (119); the straight bending device (2) comprising: a first electric push rod (21) arranged on the top surface near the front end of the support platform (11); a support plate (22) arranged on the pushing end of the first electric push rod (21), a recess (23) being arranged on one corner of the front end of the top surface of the support plate (22); a second electric push rod (24) arranged on the other corner of the front end of the top surface of the support plate (22); a moving plate (25) arranged on the pushing end of the second electric push rod (24), the bottom end of the moving plate (25) being embedded in one end of the recess (23), the moving plate (25) being capable of moving in the recess (23) through the second electric push rod (24); a hydraulic push rod (26) arranged on the rear side of the outer wall of the moving plate (25); a pushing head (27) arranged on the pushing end of the hydraulic push rod (26); a plurality of rotating columns (28) embedded in the rear side and the right side of the outer wall of the pushing head (27) in L shape, the plurality of rotating columns (28) being capable of rotating; An infrared sensor (29) is arranged at a corner of the rear top end of the outer wall of the pushing head (27); The drilling device (3) comprises: A long plate (31) is arranged at the center of the rear end of the top surface of the support platform (11); A second driving assembly is arranged at the top rear end of the long plate (31); An automatic drilling machine (39) is arranged at the pushing end of the second driving assembly, and the second driving assembly can drive the automatic drilling machine (39) to rotate by 90 degrees; The second driving assembly comprises: An arc-shaped rack (32) is arranged at the top rear end of the long plate (31), and the tooth body of the arc-shaped rack (32) is provided with a sliding groove (33) at the upper and lower ends; Two arc-shaped blocks (34) are respectively embedded in the two sliding grooves (33), and the two arc-shaped blocks (34) can be limited to move along the two sliding grooves (33); Two second bearing seats (35) are arranged at one end of the two arc-shaped blocks (34); A third gear (36) is arranged between the rotating ends of the two second bearing seats (35), and the third gear (36) is meshed with the arc-shaped rack (32); A flat brake motor (37) is arranged at the bottom of the rotating end of one of the second bearing seats (35), the output end of the flat brake motor (37) is fixedly connected with the center of the bottom surface of the third gear (36), and the flat brake motor (37) can drive the third gear (36) to rotate, so as to move to one end of the arc-shaped rack (32) to rotate by 90 degrees; A third electric push rod (38) is arranged on the top surface of the other second bearing seat (35), and the pushing end of the third electric push rod (38) is fixedly connected with the automatic drilling machine (39).

2. A valve stem both ends drilling apparatus with index adjusting mechanism according to claim 1, characterized in that, The first driving assembly comprises: Two first bearing seats (19) are arranged at the upper and lower ends of the rear side of the outer wall of the rotating plate (18); A bearing plate (110) is arranged at one end of the two first bearing seats (19); Two lead screws (111) are respectively sleeved on the rotating ends of one side of the two first bearing seats (19), and the two lead screws (111) are in opposite directions; A first gear (112) is arranged between the two lead screws (111); A second brake motor (113) is arranged at the front bottom end of the outer wall of the bearing plate (110); A second gear (114) is arranged at the rotating end of the second brake motor (113), the second gear (114) is meshed with the first gear (112), and the second brake motor (113) can drive the second gear (114) to drive the first gear (112) to rotate the two lead screws (111); Two lead screw nuts (115) are respectively sleeved on the outer walls of the two lead screws (111), and the two lead screw nuts (115) can rotate and move on the outer walls of the two lead screws (111); Two moving rods (116) are arranged at one end of the two lead screw nuts (115), and the outer walls of the two moving rods (116) are respectively fixedly connected with the two clamping plates (119). T-shaped moving blocks (117), two in number, are arranged at the center of the rear side of the inner wall of the two moving rods (116); A limiting long rod (118) is arranged at the center of the rear side of the outer wall of the bearing plate (110), and the two T-shaped moving blocks (117) are sleeved in the limiting long rod (118), and the two T-shaped moving blocks (117) can move along the inner wall of the limiting long rod (118).

3. A valve stem both ends drilling apparatus with index adjusting mechanism according to claim 2, characterized in that, The limiting long rod (118) and the two T-shaped moving blocks (117) are used as support points, and the two lead screws (111) rotate to drive the two lead screw nuts (115) to move, so as to drive the two moving rods (116) to move to make the two clamping plates (119) close to each other and expand.

4. A valve stem both ends drilling apparatus with index adjusting mechanism according to claim 3, characterized in that, The straight pipe valve rod is fixed by the fixing device (1), the hydraulic push rod (26) pushes the push head (27) to move to the extension end of the valve rod, the rotating column (28) at the rear side of the push head (27) first contacts and applies pressure to the outer wall of the valve rod, and the limiting action of the right rotating column (28) makes the extension end of the valve rod gradually bend to 90 degrees, and the straight bending process is completed.

5. A valve stem both ends drilling apparatus with index adjusting mechanism according to claim 4, characterized in that, The flat brake motor (37) is started to drive the third gear (36) to roll along the arc-shaped rack (32), drive the arc-shaped block (34) to move along the sliding groove (33), and make the automatic drilling machine (39) rotate 90 degrees synchronously with the second driving assembly, so that the drill bit can be aligned with the bent end of the straight bending valve rod.

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