Integral main shaft transmission device and bending equipment

Abstract

The utility model discloses an integral type main shaft transmission device and a bending device, the integral type main shaft transmission device comprises a shell, a driving mechanism, a transmission mechanism and a lifting mechanism, the shell comprises a fixing sleeve, the driving mechanism comprises a driving piece and an encoder, the driving piece is arranged at one end of the fixing sleeve, and the encoder is arranged at the other end of the fixing sleeve. The encoder is arranged in the driving part, the movable end of the driving part extends into the fixing sleeve, the transmission mechanism comprises a transmission guide sleeve, the transmission guide sleeve is in transmission connection with the driving part, the driving part can directly drive the transmission guide sleeve to rotate, the lifting mechanism comprises a lifting lead screw and a connecting stud, and the connecting stud is connected with the lifting lead screw. The transmission guide sleeve can drive the lifting lead screw to ascend and descend when rotating. The bending equipment comprises the integral main shaft transmission device. According to the utility model, the transmission efficiency and the numerical control precision can be improved, and the maintenance difficulty and cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bending equipment, in particular to an integral main shaft transmission device and a bending equipment. Background Art

[0002] The continuous expansion and deepening of the modern industrial field has made bending equipment, as a key equipment in the metal processing industry, increasingly attract widespread attention in the industry for its technological innovation and application development. Traditional CNC axis drive bending equipment often adopts a layout in which the motor and the bending spindle are separated, and the motor relies on a transmission mechanism such as a belt to drive the bending spindle. Although this design realizes CNC axis transmission, the output force is delayed or lagging during the transmission process due to the influence of the transmission efficiency between the motor and the spindle. This may not only affect the CNC accuracy of the bending equipment and cause errors in the processing results, but may also increase the maintenance difficulty and cost of the equipment due to the complexity of the installation process and the high standards for dust prevention. Therefore, further optimization and improvement of the structure of the bending equipment to improve the transmission efficiency and CNC accuracy and reduce the maintenance difficulty and cost has become an urgent problem to be solved in the metal processing industry. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an integrated spindle transmission device, which can improve transmission efficiency and numerical control accuracy and reduce maintenance difficulty and cost.

[0004] In order to solve the above technical problems, the utility model provides an integrated spindle transmission device, including a shell, a driving mechanism, a transmission mechanism connected to the driving mechanism, and a lifting mechanism connected to the transmission mechanism, the shell includes a fixed sleeve, the driving mechanism includes a driving member and an encoder, the driving member is arranged at one end of the fixed sleeve, the encoder is arranged in the driving member, the movable end of the driving member extends into the fixed sleeve, the transmission mechanism includes a transmission guide sleeve, the transmission guide sleeve is transmission-connected to the driving member, and the driving member can directly drive the transmission guide sleeve to rotate.

[0005] The lifting mechanism comprises a lifting screw and a connecting stud. The lifting screw is connected to the transmission guide sleeve. When the transmission guide sleeve rotates, it can drive the lifting screw to lift. The connecting stud is coaxially connected to the lifting screw.

[0006] As an improvement of the above scheme, the transmission mechanism also includes a transmission nut, a fixed cavity and a telescopic cavity are provided in the transmission guide sleeve, the fixed cavity is connected with the telescopic cavity through a connecting hole, the inner wall of the telescopic cavity is provided with a thread, the transmission nut is screwed into the telescopic cavity, the inner wall of the transmission nut is provided with a thread meshing with the lifting screw rod, the transmission nut can rotate with the transmission guide sleeve, and the transmission nut can drive the lifting screw rod to rise and fall when rotating.

[0007] As an improvement on the above scheme, the lifting mechanism also includes a sliding sleeve, and the shell also includes a lower guide sleeve, the lower guide sleeve is connected to one end of the fixed sleeve away from the driving member, a limiting hole is provided in the lower guide sleeve, the shape of the outer wall of the sliding sleeve corresponds to the shape of the limiting hole, the sliding sleeve can be inserted into the limiting hole and can slide up and down in the limiting hole, one end of the sliding sleeve is connected to one end of the lifting screw rod, a through hole is provided in the sliding sleeve, and the connecting stud passes through the through hole to be connected to the lifting screw rod.

[0008] As an improvement of the above scheme, the fixed sleeve is arranged on the outside of the transmission guide sleeve, the fixed sleeve includes a first supporting cavity and a second supporting cavity which are connected to each other, the integral spindle transmission device also includes a bearing mechanism, the bearing mechanism includes a first bearing and a second bearing arranged in the first supporting cavity and a third bearing and a fourth bearing arranged in the second supporting cavity, the transmission guide sleeve is arranged in the first supporting cavity and the second supporting cavity and passes through the first bearing, the second bearing, the third bearing and the fourth bearing in sequence, a supporting boss is provided at one end of the transmission guide sleeve away from the driving member, the supporting boss protrudes from the side wall of the transmission guide sleeve, and the third bearing and the fourth bearing are respectively abutted against both sides of the supporting boss.

[0009] As an improvement of the above scheme, the bearing mechanism also includes a bearing spacer, which is sleeved on the outer wall of the transmission guide sleeve and located in the first supporting cavity, the first bearing and the second bearing are respectively abutted against the upper and lower sides of the bearing spacer, the fixed sleeve is provided with an oil filling hole that passes through the outside, the transmission guide sleeve is provided with a guide sleeve oil circuit that is connected to the first supporting cavity, the bearing spacer is provided with a first oil circuit that is connected to the oil filling hole, a second oil circuit and a third oil circuit that are respectively connected to the upper and lower sides of the bearing spacer, and a fourth oil circuit that is connected to the guide sleeve oil circuit.

[0010] As an improvement of the above scheme, the bearing mechanism also includes a fixing nut, a fixing retaining ring and a fixing washer, the outer portion of the fixing nut is screwed to the inner wall of the first supporting cavity, one end of the fixing retaining ring abuts against one end of the fixing nut, and the other end of the fixing retaining ring abuts against the end of the first bearing; one end of the fixing washer abuts against the end of the fourth bearing, and the other end of the fixing washer abuts against the lower guide sleeve.

[0011] As an improvement of the above-mentioned scheme, the integrated spindle transmission device also includes a sealing mechanism, which includes a first sealing ring and a second sealing ring. The bottom inner wall of the lower guide sleeve is provided with a first sealing groove, and the first sealing ring is arranged in the first sealing groove. The shape of the first sealing ring corresponds to the shape of the outer wall of the sliding sleeve, and the first sealing ring abuts between the sliding sleeve and the lower guide sleeve; the end of the driving member is connected to the end of the fixed sleeve, and a second sealing groove is provided between the end of the driving member and the fixed sleeve, and the second sealing ring is arranged in the second sealing groove.

[0012] As an improvement on the above scheme, a vibration-damping groove is provided at one end of the sliding sleeve away from the driving member, and the vibration-damping groove is in the shape of a concave arc surface. The lifting mechanism also includes a vibration-damping connecting pad, one end of which is in the shape of a convex arc surface and is fixed in the vibration-damping groove, and the other end of the vibration-damping connecting pad protrudes from the end surface of the sliding sleeve and is arranged outside the connecting stud with the sleeve.

[0013] The utility model also provides a bending device, including the integrated spindle transmission device as described above, and also including a frame, a rear stop device and a bending device, the integrated spindle transmission device and the rear stop device are fixed on the frame, the integrated spindle transmission device is transmission-connected to the bending device, the bending device includes a movable plate, an upper die and a bending knife, the movable plate is connected to the connecting studs of the integrated spindle transmission device, the upper die is connected to the movable plate, the bending knife is connected to the upper die, a lower die is fixed on the frame, the lower die is located below the bending knife and is fixed to the frame.

[0014] As an improvement of the above-mentioned scheme, the rear stop device includes a horizontal moving mechanism, a bending control mechanism and a side shifting mechanism, the horizontal moving mechanism includes a horizontal moving seat, the bending control mechanism is arranged on the horizontal moving seat, the bending control mechanism includes a bending control moving seat, the side shifting mechanism is arranged on the bending control moving seat, and the side shifting mechanism includes a side fixing plate, the end of the side fixing plate extends toward the lower mold and is located below the bending knife.

[0015] The implementation of this utility model has the following beneficial effects:

[0016] The utility model has an integral spindle transmission device with a housing, a driving mechanism, a transmission mechanism and a lifting mechanism, wherein the driving mechanism includes a driving member and an encoder, the encoder is arranged in the driving member, the transmission mechanism includes a transmission guide sleeve, the transmission guide sleeve is connected to the driving member, the driving member can directly drive the transmission guide sleeve to rotate, the lifting mechanism includes a lifting screw and a connecting stud, the lifting screw is connected to the transmission guide sleeve, and the lifting screw can be driven to lift when the transmission guide sleeve rotates. The driving member directly drives the transmission guide sleeve, and the transmission guide sleeve drives the lifting screw to lift. Compared with the traditional leather transmission method, the method of using the driving member to directly drive the transmission guide sleeve and the transmission guide sleeve to drive the lifting screw to lift has higher transmission efficiency, and the method of using the built-in encoder can accurately grasp the operating status of the equipment, and can accurately output the parameters such as the speed and torque of the CNC motor, thereby improving the CNC accuracy. The fixed sleeve can be used to wrap and protect the transmission guide sleeve and the lifting screw, so it can be dustproof and waterproof, reducing the difficulty and cost of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model integrated spindle transmission device;

[0018] Figure 2 yes Figure 1 A partial enlarged view of middle A;

[0019] Figure 3 yes Figure 1 A partial enlarged view of B in the middle;

[0020] Figure 4 yes Figure 1 A partial enlarged view of C in the middle;

[0021] Figure 5 It is a structural schematic diagram of the bending equipment of the utility model. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail with reference to the accompanying drawings. It is hereby stated that the directional words such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the utility model are only based on the accompanying drawings of the utility model, and are not specific limitations of the utility model.

[0023] See also Figure 1The embodiment of the utility model discloses an integrated spindle transmission device 10, including a shell 1, a driving mechanism 2, a transmission mechanism 3 connected to the driving mechanism 2, and a lifting mechanism 4 connected to the transmission mechanism 3, wherein the shell 1 can wrap the driving mechanism 2, the transmission mechanism 3 and the lifting mechanism 4, and the driving mechanism 2 is used to directly drive the transmission mechanism 3, and the transmission mechanism 3 directly drives the lifting mechanism 4, wherein the shell 1 includes a fixing sleeve 11, and the fixing sleeve 11 can fix the driving mechanism 2, and the driving mechanism 2 includes a driving member 21 and an encoder 22, wherein the driving member 21 is preferably a servo motor, which has high driving accuracy, can output large torque, and has the ability of low-speed driving, and the encoder 22 is arranged in the driving member 21, which belongs to a built-in method, and the encoder 22 can detect mechanical motion and convert it into an analog or digitally encoded output signal, and the encoder 22 is built-in. By adopting the built-in method, the running state of the equipment can be accurately grasped, and the output of parameters such as the rotation speed and torque of the motor can be accurately controlled, thereby improving the numerical control accuracy. The driving member 21 is arranged at one end of the fixed sleeve 11, and the movable end of the driving member 21 extends into the fixed sleeve 11. The transmission mechanism 3 includes a transmission guide sleeve 31. The fixed sleeve 11 is sleeved on the outside of the transmission guide sleeve 31. The transmission guide sleeve 31 is transmission-connected with the driving member 21. The driving member 21 can drive the transmission guide sleeve 31 to rotate, and the transmission guide sleeve 31 rotates in the fixed sleeve 11.

[0024] The lifting mechanism 4 includes a lifting screw 41 and a connecting stud 42. The lifting screw 41 is connected to the transmission guide sleeve 31. The transmission guide sleeve 31 is sleeved outside the lifting screw 41. When the transmission guide sleeve 31 rotates, it can drive the lifting screw 41 to lift in the transmission guide sleeve 31. The connecting stud 42 is coaxially connected to the lifting screw 41, so when the lifting screw 41 is lifted, it can drive the connecting stud 42 to lift. The connecting stud 42 can be connected to the bending spindle, so that the lifting screw 41 can drive the bending spindle to move up and down to complete the bending action. The lifting screw 41 and the transmission guide sleeve 31 are both arranged in the fixed sleeve 11, and the fixed sleeve 11 can realize dustproof and waterproof for the transmission guide sleeve 31 and the lifting screw 41.

[0025] The beneficial effects of the embodiments of the present utility model are as follows:

[0026] The integral spindle transmission device 10 of the utility model embodiment is provided with a housing 1, a driving mechanism 2, a transmission mechanism 3 and a lifting mechanism 4, wherein the driving mechanism 2 comprises a driving member 21 and an encoder 22, the encoder 22 is arranged in the driving member 21, the transmission mechanism 3 comprises a transmission guide sleeve 31, the transmission guide sleeve 31 is transmission-connected with the driving member 21, the driving member 21 can directly drive the transmission guide sleeve 31 to rotate, the lifting mechanism 4 comprises a lifting screw 41 and a connecting stud 42, the lifting screw 41 is connected with the transmission guide sleeve 31, and the transmission guide sleeve 31 can drive the lifting screw 41 to be lifted and lowered when rotating. The driving member 21 is used to directly drive the transmission guide sleeve 31, and the transmission guide sleeve 31 is used to drive the lifting screw 41 to be lifted and lowered. Compared with the traditional leather transmission method, the method of using the built-in encoder 22 can detect mechanical motion and convert it into an analog or digitally encoded output signal, so as to accurately grasp the operating state of the equipment, and can accurately output parameters such as the rotation speed and torque of the numerical control motor, thereby improving the numerical control accuracy. The fixing sleeve 11 can be used to wrap and protect the transmission guide sleeve 31 and the lifting screw rod 41, so that they can be dustproof and waterproof, reducing the difficulty and cost of maintenance.

[0027] Specifically, the transmission mechanism 3 further includes a transmission nut 32, which is connected to the inner side wall of the transmission guide sleeve 31. The transmission nut 32 rotates simultaneously with the transmission guide sleeve 31. The inner wall of the transmission nut 32 is provided with a thread meshed with the lifting screw 41. The transmission nut 32 can rotate along with the transmission guide sleeve 31. By utilizing the meshing relationship between the lifting screw 41 and the transmission nut 32, the transmission nut 32 can drive the lifting screw 41 to rise and fall when rotating. Therefore, the transmission guide sleeve 31 drives the transmission nut 32 to rotate, and the transmission nut 32 drives the lifting screw 41 to rise and fall. The precision of the transmission nut 32 and the lifting screw 41 is controlled within ±0.01 mm, so that the output response of the force is fast, the screw obstacles are less, and the loss of force is less.

[0028] See also Figure 2 and Figure 3In order to make the lifting screw 41 rotate smoothly and reduce the rotational friction, a fixed cavity 311 and a telescopic cavity 312 are provided in the transmission guide sleeve 31. The fixed cavity 311 is connected with the telescopic cavity 312 through a connecting hole 313. One end of the lifting screw 41 is arranged in the telescopic cavity 312, and the other end of the lifting screw 41 passes through the connecting hole 313 to be connected with the connecting stud 42. The cavity wall of the fixed cavity 311 does not directly contact the transmission guide sleeve 31, which can reduce the friction. The telescopic cavity 312 can fix the transmission nut 32, which can drive the lifting screw 41 to rotate smoothly. The inner wall of the telescopic cavity 312 is provided with a thread, and the transmission nut 32 is screwed into the telescopic cavity 312, thereby forming a connection with the transmission guide sleeve 31. In order to limit the stroke of the lifting screw rod 41 and prevent the lifting screw rod 41 from falling out, a retaining ring 411 is provided at one end of the lifting screw rod 41 close to the driving member 21. The retaining ring 411 protrudes from the outer wall of the lifting screw rod 41. The diameter of the retaining ring 411 is larger than the diameter of the connecting hole 313. Therefore, when the retaining ring 411 moves to the end of the connecting hole 313, it will be blocked by the connecting hole 313, thereby forming a stroke limiting effect.

[0029] The lifting mechanism 4 further includes a sliding sleeve 43, and the housing 1 further includes a lower guide sleeve 12. The lower guide sleeve 12 is connected to one end of the fixed sleeve 11 away from the driving member 21. A limiting hole 121 is provided in the lower guide sleeve 12. The shape of the outer wall of the sliding sleeve 43 corresponds to the shape of the limiting hole 121. The sliding sleeve 43 can be inserted into the limiting hole 121 and can slide up and down in the limiting hole 121. One end of the sliding sleeve 43 is connected to one end of the lifting screw 41. A through hole 431 is provided in the sliding sleeve 43. The connecting stud 42 passes through the through hole 431 and is connected to the lifting screw 41. By providing the sliding sleeve 43, the contact area of ​​the connecting stud 42 when connecting the bending spindle can be increased, thereby improving the connection strength. The lifting screw 41 is rotatably connected to the sliding sleeve 43. When the lifting screw 41 rotates, it will not drive the sliding sleeve 43 to rotate, and can only transmit the driving force of moving up and down.

[0030] In order to facilitate the rotation of the transmission guide sleeve 31, the fixed sleeve 11 includes a first supporting cavity 111 and a second supporting cavity 112 which are connected to each other. The integral spindle transmission device 10 also includes a bearing mechanism 5, which includes a first bearing 51 and a second bearing 52 arranged in the first supporting cavity 111 and a third bearing 53 and a fourth bearing 54 arranged in the second supporting cavity 112. The transmission guide sleeve 31 is arranged in the first supporting cavity 111 and the second supporting cavity 112 and passes through the first bearing 51, the second bearing 52, the third bearing 53 and the fourth bearing 54 in sequence. A supporting boss 314 is provided at one end of the transmission guide sleeve 31 away from the driving member 21. The supporting boss 314 protrudes from the side wall of the transmission guide sleeve 31. The third bearing 53 and the fourth bearing 54 are respectively abutted against both sides of the supporting boss 314, and the supporting boss 314 can separate the third bearing 53 from the fourth bearing 54. The first bearing cavity 111 and the second bearing cavity 112 are respectively arranged at the middle and end of the transmission guide sleeve 31. By arranging the first bearing 51, the second bearing 52, the third bearing 53 and the fourth bearing 54 at the middle and end of the transmission guide sleeve 31, the smoothness of the rotation of the transmission guide sleeve 31 and the high response speed can be ensured. Among them, the first bearing 51 and the fourth bearing 54 are deep groove ball bearings with high limit speed, and the second bearing 52 and the third bearing 53 are roller bearings with high load capacity. The combination of deep groove ball bearings and roller bearings can achieve a balance between high load capacity and high speed, and at the same time, the force transmission loss and noise are small.

[0031] The bearing mechanism 5 also includes a bearing spacer 55, which is sleeved on the outer wall of the transmission guide sleeve 31 and located in the first supporting cavity 111. The first bearing 51 and the second bearing 52 are respectively abutted against the upper and lower sides of the bearing spacer 55, and the bearing spacer 55 can separate the first bearing 51 and the second bearing 52.

[0032] See also Figure 2The integrated spindle transmission device 10 has a good sealing environment. In this sealed environment, in order to lubricate the internal parts, the fixed sleeve 11 is provided with an oil filling hole 113 that is connected to the outside, and the oil filling hole 113 is closed by an oil plug. The transmission guide sleeve 31 is provided with a guide sleeve oil path 315 that is connected to the first bearing cavity 111, and the bearing spacer 55 is provided with a first oil path 551 that is connected to the oil filling hole 113, a second oil path 552 and a third oil path 553 that are respectively connected to the upper and lower sides of the bearing spacer 55, and a fourth oil path 554 that is connected to the guide sleeve oil path 315. When filling oil, the lubricating oil can enter the first bearing cavity 111. Specifically, the lubricating oil can enter the first bearing 51, the second bearing 52, the side of the transmission guide sleeve 31 and the side of the lifting screw 41 through the second oil passage 552, the third oil passage 553, the fourth oil passage 554 and the guide sleeve oil passage 315, respectively. At the same time, the lubricating oil can enter between the sliding sleeve 43 and the lower guide sleeve 12 through the second bearing cavity 112, and can lubricate the first bearing 51, the second bearing 52, the transmission guide sleeve 31, the lifting screw 41, the sliding sleeve 43 and the lower guide sleeve 12. Under the action of this oil replenishment channel and lubrication system, the use environment and working temperature of the parts are greatly improved, friction and loss can be reduced, and the efficiency of the mechanism and the overall performance can be improved.

[0033] The bearing mechanism 5 further includes a fixing nut 56, a fixing retaining ring 57 and a fixing washer 58. The outer side of the fixing nut 56 is screwed to the inner wall of the first bearing cavity 111. One end of the fixing retaining ring 57 abuts against one end of the fixing nut 56, and the other end of the fixing retaining ring 57 abuts against the end of the first bearing 51. The fixing nut 56 is used to fix the fixing retaining ring 57, and the fixing retaining ring 57 is used to fix the first bearing 51, the second bearing 52 and the bearing spacer 55. One end of the fixing washer 58 abuts against the end of the fourth bearing 54, and the other end of the fixing washer 58 abuts against the lower guide sleeve 12. The fixing washer 58 is used to fix the fourth bearing 54 and fix the third bearing 53 through the supporting boss 314. The fixing washer 58 is made of flexible materials such as plastic and rubber, and can produce elastic fixation for the third bearing 53 and the fourth bearing 54, and has a sealing effect.

[0034] In order to form a better sealing effect, the integrated spindle transmission device 10 also includes a sealing mechanism 6, which includes a first sealing ring 61 and a second sealing ring 62. The bottom inner wall of the lower guide sleeve 12 is provided with a first sealing groove 122, and the first sealing ring 61 is arranged in the first sealing groove 122. The shape of the first sealing ring 61 corresponds to the outer wall shape of the sliding sleeve 43. The first sealing ring 61 abuts between the sliding sleeve 43 and the lower guide sleeve 12, and can seal the gap between the sliding sleeve 43 and the lower guide sleeve 12, thereby preventing the lubricating oil from being lost from the gap between the sliding sleeve 43 and the lower guide sleeve 12, and at the same time, preventing dust from entering. In addition, the end of the driving member 21 is connected to the end of the fixing sleeve 11, and a second sealing groove 211 is provided between the end of the driving member 21 and the fixing sleeve 11. The second sealing ring 62 is provided in the second sealing groove 211, which can prevent the lubricating oil from flowing out from between the driving member 21 and the fixing sleeve 11. At the same time, the second sealing ring 62 is made of plastic, rubber or other materials, which can buffer the vibration of the driving member 21.

[0035] Further, see Figure 4 , a vibration-damping groove 432 is provided at one end of the sliding sleeve 43 away from the driving member 21, and the vibration-damping groove 432 is in the shape of an inwardly concave arc surface. The lifting mechanism 4 also includes a vibration-damping connection pad 44, one end of which is in the shape of an outwardly convex arc surface and is fixed in the vibration-damping groove 432, and the other end of the vibration-damping connection pad 44 protrudes from the end surface of the sliding sleeve 43 and is sleeved outside the connecting stud 42. When connected with the bending spindle, the vibration-damping connection pad 44 can buffer the vibration generated by the bending spindle. At the same time, the vibration-damping connection pad 44 is arranged between the sliding sleeve 43 and the connecting stud 42, and can also buffer and seal between the sliding sleeve 43 and the connecting stud 42. The arc surface shape can improve the buffering performance of the vibration-damping connection pad 44 and evenly disperse the impact force.

[0036] See also Figure 5The utility model embodiment also discloses a bending device, including the above-mentioned integrated spindle transmission device 10, and also includes a frame 7, a rear stopper 8 and a bending device 9, the rear stopper 8 is fixed on the frame 7, the rear stopper 8 can be used to control the bending parameters, the integrated spindle transmission device and the rear stopper 8 are fixed on the frame 7, the integrated spindle transmission device is connected to the bending device 9 in a transmission manner, the integrated transmission device can control the bending device 9 to rise and fall, so as to bend the sheet metal, and the bending device 9 includes a movable plate 91, an upper die 92 and a bending knife 93 The movable plate 91 is connected to the connecting stud 42 of the integral spindle transmission device, the upper die 92 is connected to the movable plate 91, and the bending knife 93 is connected to the upper die 92. The integral spindle transmission device utilizes the transmission relationship between the driving member 21, the transmission guide sleeve 31, the transmission nut 32 and the lifting screw 41 to drive the movable plate 91 to rise and fall, thereby driving the upper die 92 and the bending knife 93 to rise and fall, and a lower die 71 is fixed on the frame 7. The lower die 71 is located below the bending knife 93 and is fixed on the frame 7. The lower die 71 cooperates with the bending knife 93 to bend the sheet metal.

[0037] The bending equipment drives the lifting screw 41 to rise and fall through the driving member 21 of the integral spindle transmission device 10, so as to drive the bending knife 93 to bend the sheet metal. Since the driving member 21 drives the transmission guide sleeve 31 and the transmission nut 32 to rotate, the lifting screw 41 is engaged with the transmission nut 32, and the torque transmitted by the driving member 21 can be directly converted into the vertical force of the lifting screw 41. Therefore, the transmission efficiency is high and the response speed is fast. By using the built-in encoder 22, the CNC accuracy can also be improved.

[0038] Furthermore, in order to control the bending parameters, the rear stopper device 8 includes a horizontal moving mechanism 81, a bending control mechanism 82 and a side shifting mechanism 83. The horizontal moving mechanism 81, the bending control mechanism 82 and the side shifting mechanism 83 can move in different directions. Specifically, the horizontal moving mechanism 81 controls the movement of the X-axis, the bending control mechanism 82 controls the movement of the Z-axis, and the side shifting mechanism 83 controls the movement of the R-axis. The horizontal moving mechanism 81 includes a horizontal moving seat 811, and the bending control mechanism 82 is arranged on the horizontal moving seat 811. The moving mechanism 81 can drive the bending control mechanism 82 to move in the horizontal direction. The bending control mechanism 82 includes a bending control moving seat 821. The side shifting mechanism 83 is arranged on the bending control moving seat 821. The bending control mechanism 82 can drive the side shifting mechanism 83 to move in the vertical direction. The side shifting mechanism 83 includes a side fixing plate 831. The end of the side fixing plate 831 extends toward the lower mold 71 and is located below the bending knife 93. The side fixing plate 831 can move in the direction close to or away from the bending position to control the bending angle and radius.

[0039] The above are preferred implementations of the present utility model. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present utility model. These improvements and modifications are also considered to be within the protection scope of the present utility model.

Claims

1. An integrated spindle transmission device, characterized in that: It comprises a housing, a driving mechanism, a transmission mechanism connected to the driving mechanism, and a lifting mechanism connected to the transmission mechanism, wherein the housing comprises a fixed sleeve, the driving mechanism comprises a driving member and an encoder, the driving member is arranged at one end of the fixed sleeve, the encoder is arranged in the driving member, the movable end of the driving member extends into the fixed sleeve, the transmission mechanism comprises a transmission guide sleeve, the transmission guide sleeve is in transmission connection with the driving member, and the driving member can directly drive the transmission guide sleeve to rotate; The lifting mechanism comprises a lifting screw and a connecting stud. The lifting screw is connected to the transmission guide sleeve. When the transmission guide sleeve rotates, it can drive the lifting screw to lift. The connecting stud is coaxially connected to the lifting screw.

2. The integrated spindle transmission device according to claim 1, characterized in that: The transmission mechanism also includes a transmission nut. A fixed cavity and a telescopic cavity are provided in the transmission guide sleeve. The fixed cavity is connected to the telescopic cavity through a connecting hole. The inner wall of the telescopic cavity is provided with a thread. The transmission nut is screwed into the telescopic cavity. The inner wall of the transmission nut is provided with a thread engaged with the lifting screw rod. The transmission nut can rotate with the transmission guide sleeve. When rotating, the transmission nut can drive the lifting screw rod to rise and fall.

3. The integrated spindle transmission device according to claim 1, characterized in that: The lifting mechanism also includes a sliding sleeve, and the shell also includes a lower guide sleeve, the lower guide sleeve is connected to one end of the fixed sleeve away from the driving member, a limiting hole is provided in the lower guide sleeve, the shape of the outer wall of the sliding sleeve corresponds to the shape of the limiting hole, the sliding sleeve can be inserted into the limiting hole and can slide up and down in the limiting hole, one end of the sliding sleeve is connected to one end of the lifting screw rod, a through hole is provided in the sliding sleeve, and the connecting stud passes through the through hole to be connected to the lifting screw rod.

4. The integrated spindle transmission device according to claim 3, characterized in that: The fixed sleeve is arranged on the outer side of the transmission guide sleeve, and the fixed sleeve includes a first supporting cavity and a second supporting cavity which are interconnected. The integral spindle transmission device also includes a bearing mechanism, and the bearing mechanism includes a first bearing and a second bearing arranged in the first supporting cavity and a third bearing and a fourth bearing arranged in the second supporting cavity. The transmission guide sleeve is arranged in the first supporting cavity and the second supporting cavity and passes through the first bearing, the second bearing, the third bearing and the fourth bearing in sequence. A supporting boss is provided at one end of the transmission guide sleeve away from the driving member, and the supporting boss protrudes from the side wall of the transmission guide sleeve, and the third bearing and the fourth bearing are respectively abutted against two sides of the supporting boss.

5. The integrated spindle transmission device according to claim 4, characterized in that: The bearing mechanism also includes a bearing spacer, which is sleeved on the outer side wall of the transmission guide sleeve and located in the first supporting cavity. The first bearing and the second bearing are respectively abutted against the upper and lower sides of the bearing spacer. The fixed sleeve is provided with an oil filling hole that penetrates the outside. The transmission guide sleeve is provided with a guide sleeve oil circuit that is connected to the first supporting cavity. The bearing spacer is provided with a first oil circuit that is connected to the oil filling hole, a second oil circuit and a third oil circuit that are respectively connected to the upper and lower sides of the bearing spacer, and a fourth oil circuit that is connected to the guide sleeve oil circuit.

6. The integrated spindle transmission device according to claim 5, characterized in that: The bearing mechanism also includes a fixing nut, a fixing retaining ring and a fixing washer. The outer portion of the fixing nut is screwed to the inner wall of the first supporting cavity, one end of the fixing retaining ring abuts against one end of the fixing nut, and the other end of the fixing retaining ring abuts against the end of the first bearing; one end of the fixing washer abuts against the end of the fourth bearing, and the other end of the fixing washer abuts against the lower guide sleeve.

7. The integrated spindle transmission device according to claim 3, characterized in that: The integrated spindle transmission device also includes a sealing mechanism, which includes a first sealing ring and a second sealing ring. The bottom inner wall of the lower guide sleeve is provided with a first sealing groove, and the first sealing ring is arranged in the first sealing groove. The shape of the first sealing ring corresponds to the shape of the outer wall of the sliding sleeve, and the first sealing ring abuts between the sliding sleeve and the lower guide sleeve; the end of the driving member is connected to the end of the fixed sleeve, and a second sealing groove is provided between the end of the driving member and the fixed sleeve, and the second sealing ring is arranged in the second sealing groove.

8. The integrated spindle transmission device according to claim 3, characterized in that: A vibration-damping groove is provided at one end of the sliding sleeve away from the driving member, and the vibration-damping groove is in the shape of an inwardly concave arc surface. The lifting mechanism also includes a vibration-damping connecting pad, one end of which is in the shape of an outwardly convex arc surface and is fixed in the vibration-damping groove, and the other end of the vibration-damping connecting pad protrudes from the end surface of the sliding sleeve and is sleeved with the sliding sleeve outside the connecting stud.

9. A bending device, characterized in that: It includes an integrated spindle transmission device as described in any one of claims 1 to 8, and also includes a frame, a rear stop device and a bending device, the integrated spindle transmission device and the rear stop device are fixed on the frame, the integrated spindle transmission device is transmission-connected to the bending device, the bending device includes a movable plate, an upper die and a bending knife, the movable plate is connected to the connecting studs of the integrated spindle transmission device, the upper die is connected to the movable plate, the bending knife is connected to the upper die, a lower die is fixed on the frame, the lower die is located below the bending knife and is fixed to the frame.

10. The bending device according to claim 9, characterized in that: The rear stop device includes a horizontal moving mechanism, a bending control mechanism and a lateral shifting mechanism. The horizontal moving mechanism includes a horizontal moving seat. The bending control mechanism is arranged on the horizontal moving seat. The bending control mechanism includes a bending control moving seat. The lateral shifting mechanism is arranged on the bending control moving seat. The lateral shifting mechanism includes a side fixing plate. The end of the side fixing plate extends toward the lower mold and is located below the bending knife.

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