A transmission shaft production line

Abstract

The present invention discloses a transmission shaft production line, including a truss and a slideway arranged on the truss, a three-component conveying mechanism, a transmission shaft press machine, a straightening and welding machine, a mid-end cooling conveying rack, a straightening machine, a dynamic balancing machine and a product output conveying rack arranged in sequence from left to right below the truss, the three-component conveying mechanism is used to convey the transmission shaft head, the transmission shaft tube and the transmission shaft tail to the transmission shaft press machine side respectively; a first transfer mechanism and a transfer manipulator are slidably arranged on the slideway, and the transfer manipulator can transfer the transmission shaft processed on the straightening and welding machine to the mid-end cooling conveying rack, the straightening machine and the dynamic balancing machine in sequence, and finally transfer it to the product output conveying rack. The present invention has the following advantages and effects: this production line has automation capabilities, integrates multiple equipment, can reduce equipment costs and labor costs, and greatly improves product quality and output.

Description

Technical Field

[0001] The invention relates to a production line, in particular to a transmission shaft production line. Background Art

[0002] The existing transmission shaft is composed of a transmission shaft head, a transmission shaft tube and a transmission shaft tail. When producing the transmission shaft, the above three parts need to be pressed into a whole, and the pressed transmission shaft is straightened and dynamically balanced to obtain a transmission shaft with composite product quality.

[0003] Since the production of transmission shafts is completed step by step through multiple processes, and at present, each device is operated by one person per machine, and one process is completed at a time. For the production of automobile transmission shafts that require multiple processes, multiple independent supporting facilities are required, and multiple people operate multiple times, which involves the spatial arrangement of equipment between processes and the resulting complex personnel flow.

[0004] In addition, multi-person operations are greatly affected by human factors, which creates many uncertainties, resulting in poor stability of the produced drive shafts, which greatly affects product quality and output, and thus needs to be improved. Summary of the invention

[0005] The purpose of the present invention is to provide a transmission shaft production line, which has automation capabilities and integrates multiple devices, thereby reducing equipment costs and labor costs and greatly improving product quality and output.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: a transmission shaft production line, comprising a truss and a slideway arranged on the truss, a three-component conveying mechanism, a transmission shaft press machine, a straightening and welding machine, a mid-end cooling conveying rack, a straightening machine, a dynamic balancing machine and a product output conveying rack arranged in sequence from left to right below the truss, the three-component conveying mechanism being used to convey the transmission shaft head, the transmission shaft tube and the transmission shaft tail to the transmission shaft press machine side respectively;

[0007] A first transfer mechanism is slidably arranged on the slideway, which can transfer the drive shaft head, drive shaft tube and drive shaft tail on the three-component conveying mechanism to the drive shaft press machine at the same time. The first transfer mechanism also transfers the drive shaft that has been pressed on the drive shaft press machine to the straightening welding machine for welding and straightening operations again. A transfer robot is also slidably arranged on the slideway, which can transfer the drive shaft that has been processed on the straightening welding machine to the mid-end cooling conveying rack, the straightening machine and the dynamic balancing machine in turn, and finally transfer it to the product output conveying rack.

[0008] The present invention is further configured as follows: the transmission shaft press machine comprises a frame having a slide rail, a first movable thruster and a second movable thruster are slidably connected to the slide rail, a first press machine and a second press machine are respectively arranged at both ends of the frame, and at least one of the first press machine and the second press machine can drive the first movable thruster and the second movable thruster to move in a direction close to each other;

[0009] Two first shaft neck clamps are also slidably connected to the slide rail, and the two first shaft neck clamps respectively clamp and fix the transmission shaft head and the transmission shaft tail. A plurality of second shaft neck clamps that can clamp and fix the transmission shaft tube are arranged between the two first shaft neck clamps. The two first shaft neck clamps and the plurality of second shaft neck clamps can keep the transmission shaft head, the transmission shaft tail and the transmission shaft tube coaxially arranged.

[0010] The present invention is further configured as follows: the first press comprises a housing, one side of the housing is provided with two mutually independent thrust rods and a connecting rod, the same end of the thrust rod and the connecting rod is fixedly connected through a fixing plate, the other end of the thrust rod is fixedly connected or abuts against the first movable thrust machine or the second movable thrust machine, and one side of the housing is provided with a driving mechanism capable of driving the connecting rod to reciprocate along its axial direction;

[0011] A plurality of limiting holes are arranged on one side of the thrust rod, and a limiting cylinder which can match with the limiting holes is also arranged on one side of the casing, and the telescopic end of the limiting cylinder can pass through the casing and match with the limiting holes inside the casing.

[0012] The present invention is further configured as follows: the first movable thrust machine and the second movable thrust machine both include a movable seat that can cooperate with the slide rail, one side of the movable seat is provided with a coupling flange that can be fixedly connected or abutted with the thrust rod, the other side of the movable seat is provided with a flange locating tenon, and the transmission shaft head and the transmission shaft tail are both provided with flange holes that can cooperate with the flange locating tenon.

[0013] The present invention is further configured as follows: the first movable thrust machine and the second movable thrust machine also include an ejection cylinder, the ejection cylinder is arranged on a cylinder seat, one end of the cylinder seat is fixedly connected to the movable seat, the telescopic end of the ejection cylinder passes through one end of the cylinder seat and is matched with an abutment block, and the abutment block is located on the first shaft neck clamp; when one side of the cylinder seat moves to contact the abutment block, the flange locating tenon is positioned in place with the transmission shaft head or the transmission shaft tail.

[0014] The present invention is further configured as follows: the first journal clamp and the second journal clamp each include a pair of clamping fingers, a clamping notch is provided on one side of the pair of clamping fingers facing each other, the clamping notch can be matched with the transmission shaft head or the transmission shaft tail, or the transmission shaft tube, a swing arm is provided below each of the clamping fingers, a storage groove is provided on the side of each of the swing arms facing the other swing arm, the same rotating arm is provided in the two storage grooves, and the two ends of the rotating arm are respectively rotatably connected to the two swing arms;

[0015] A limit block is provided on each swing arm, and the two limit blocks are respectively located at the two ends of a pair of clamping fingers, and a push rod motor is provided on one side of one of the limit blocks, and the output end of the push rod motor passes through the limit block and is fixedly connected to the clamping finger;

[0016] A connecting rod is provided on one side of each swing arm, one end of each connecting rod is fixedly connected to the lower end surface of the limit block, the other end of each connecting rod is fixedly connected to a slider, and each slider is slidably connected to the slide rail.

[0017] The present invention is further configured as follows: an intermediate pin is passed through one side of the rotating arm, and a support bracket for supporting the workpiece is provided at the upper end of the intermediate pin, and a first spring is provided between the support bracket and the rotating arm, one end of the first spring abuts against the upper end surface of the rotating arm, and the other end of the first spring abuts against the lower end surface of the support bracket; a rack is also provided on the frame, and the rack is arranged along the length direction of the frame, and a driving wheel is meshed on the rack, and a bracket abutting against the side edge of the rack is provided on one side of the driving wheel, and a moving motor is provided on one side of the bracket, and the output end of the moving motor passes through the bracket and is fixedly connected to the driving wheel, and a connecting piece is provided on one side of the bracket, and the connecting piece can be connected to the first shaft neck clamp or the second shaft neck clamp.

[0018] The present invention is further configured as follows: the straightening welding machine includes a frame, a workbench, a spindle head A, a spindle head B and a detection mechanism for monitoring the circular runout of the transmission shaft, the spindle head A and the spindle head B respectively fix the two ends of the automobile transmission shaft; a welding mechanism is arranged above the workbench, and a driving component that can adjust the spatial position of the welding mechanism is arranged on the frame, and under the action of the driving component, the welding mechanism welds the parts to be welded of the automobile transmission shaft; there are two welding mechanisms, which respectively correspond to the parts to be welded at the two ends of the transmission shaft, and the parts to be welded are the connection parts between the two ends of the transmission shaft tube and the transmission shaft head and the transmission shaft tail respectively.

[0019] The present invention is further configured as follows: two independent guide rails are arranged on the workbench, each guide rail is slidably connected with a movable plate, the two movable plates respectively support the spindle head A and the spindle head B, one end of each guide rail is provided with a fourth driving member that can drive the movable plate to move, and the two movable plates are both penetrated by the same shielding member for protecting the guide rails; each guide rail is composed of two mutually parallel driving rails, each driving rail is slidably connected with a movable block, the upper end surfaces of the two movable blocks are fixedly connected to the same movable plate, and each movable block is provided with a clearance groove that can cooperate with the shielding member on one side facing the other movable block; the shielding member includes a fixed plate with a accommodating groove, the accommodating groove can be used to hold impurities such as debris generated during welding, and both ends of the fixed plate are provided with folded edges that can cooperate with the clearance groove.

[0020] The present invention is further configured as follows: the detection mechanism includes a measuring frame connected to the spindle head, a rotating block is hinged on one side of the measuring frame, a pressure rod located above the transmission shaft is provided at one end of the rotating block, a detector is abutted at the other end of the rotating block, a top plate for fixing the detector is provided on the top of the measuring frame, a baffle for protecting the detector from the influence of welding is also provided on the top plate, a second spring is provided between the baffle and the rotating block, and under the action of the second spring, the pressure rod at one end of the rotating block contacts the surface of the transmission shaft, and the other end of the rotating block contacts the detector.

[0021] In summary, the present invention has the following beneficial effects: the production line of the present application has automation capability, integrating a three-component transmission mechanism, a transmission shaft press machine, a straightening and welding machine, a mid-end cooling transmission rack, a straightening machine, a dynamic balancing machine, and a product output transmission rack, by rationalizing the space layout and reducing the use of personnel. In addition, by integrating multiple devices, the equipment cost and labor cost can be reduced, greatly improving product quality and output. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of a transmission shaft production line of this embodiment;

[0023] Figure 2 yes Figure 1 The structural diagram of the middle transmission shaft press machine;

[0024] Figure 3 yes Figure 2 A partial structural schematic diagram of the first press machine and the first movable thrust machine;

[0025] Figure 4 yes Figure 3 The schematic diagram of the structure of the first press with the casing removed;

[0026] Figure 5yes Figure 4 A magnified schematic diagram of the local structure;

[0027] Figure 6 yes Figure 5 A schematic diagram of the structure of the first movable thruster, the transmission shaft head and the first journal fixture;

[0028] Figure 7 yes Figure 6 The structural diagram of the middle transmission shaft head;

[0029] Figure 8 yes Figure 7 A schematic diagram of the structure of the first journal fixture / second journal fixture cooperating with the slide rail;

[0030] Fig. 9 Yes Yes Figure 8 A schematic diagram of the structure in another direction;

[0031] Fig.10 yes Fig. 9 A schematic diagram of the partial structure of the first journal fixture / the second journal fixture;

[0032] Fig.11 yes Figure 1 Structural diagram of the center straightening welding machine;

[0033] Fig.12 yes Fig.11 Schematic diagram of the structure after removing the protective cover and protective shell;

[0034] Fig.13 yes Fig.12 A partial structural diagram of

[0035] Fig.14 yes Fig.12 A schematic diagram of the structure in another direction;

[0036] Fig.15 yes Fig.14 A local enlarged schematic diagram in FIG.

[0037] Fig.16 yes Fig.14 A local enlarged schematic diagram in FIG.

[0038] Fig.17 yes Fig.14 Schematic diagram of the structure of the detection mechanism.

[0039] Figure numerals: 1, slide rail; 2, frame; 3, first movable thrust machine; 4, second movable thrust machine; 5, first press machine; 6, second press machine; 7, first journal fixture; 8, transmission shaft head; 9, transmission shaft tail; 10, transmission shaft tube; 11, second journal fixture; 12, housing; 13, thrust rod; 14, connecting rod; 15, fixing plate; 16, driving mechanism; 17, limiting hole; 18, limiting cylinder; 19, rotating rod; 20, bearing seat; 21, gear; 22, groove; 23. Moving seat; 24. Coupling flange; 25. Flange locating tenon; 26. Flange hole; 27. Push cylinder; 28. Cylinder seat; 29. ​​Abutment block; 30. Clamping finger; 31. Clamping notch; 32. Swing arm; 33. Storage slot; 34. Rotating arm; 35. Limit block; 36. Push rod motor; 37. Connecting rod; 38. Sliding block; 39. Intermediate pin; 40. Support bracket; 41. First spring; 42. Rack; 43. Driving wheel; 44. Bracket; 45. Moving motor; 46. Connecting rod; 47. Connector; 47, fixed support; 48, push rod box; 49, push rod; 50, truss; 51, slideway; 52, three-component conveying mechanism; 53, transmission shaft press machine; 54, straightening welding machine; 55, mid-end cooling conveying rack; 56, straightening machine; 57, dynamic balancing machine; 58, product output conveying rack; 59, first transfer mechanism; 60, transfer manipulator; 61, frame; 62, workbench; 63, spindle head A; 64, spindle head B; 65, detection mechanism; 66, welding mechanism; 67 , drive assembly; 68, vertical guide rail; 69, first slide; 70, first drive member; 71, horizontal guide rail; 72, second slide; 73, second drive member; 74, guide rail; 75, movable plate; 76, shielding member; 77, movable block; 78, clearance groove; 79, accommodating groove; 80, folding edge; 81, protective cover; 82, measuring frame; 83, rotating block; 84, pressure rod; 85, detector; 86, top plate; 87, baffle; 88, second spring; 89, protective shell; 90, opening. DETAILED DESCRIPTION

[0040] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0041] like Figure 1 As shown, a transmission shaft production line includes a truss 50 and a slideway 51 arranged on the truss 50. A three-component conveying mechanism 52, a transmission shaft press 53, a straightening and welding machine 54, a mid-end cooling conveying rack 55, a straightening machine 56, a dynamic balancing machine 57, and a product output conveying rack 58 are arranged in sequence from left to right below the truss 50. The three-component conveying mechanism 52 is used to convey the transmission shaft head 8, the transmission shaft tube 10, and the transmission shaft tail 9 to the transmission shaft press 53 side.

[0042] A first transfer mechanism 59 is slidably arranged on the slideway 51, which can simultaneously transfer the drive shaft head 8, the drive shaft tube 10 and the drive shaft tail 9 on the three-component conveying mechanism 52 to the drive shaft press 53. The first transfer mechanism 59 also transfers the drive shaft that has been pressed on the drive shaft press 53 to the straightening welding machine 54 for welding and straightening operations.

[0043] A transfer robot 60 is also slidably arranged on the slideway 51 , and the transfer robot 60 can transfer the transmission shaft processed on the straightening and welding machine 54 to the middle-end cooling conveying rack 55 , the straightening machine 56 and the dynamic balancing machine 57 in sequence, and finally transfer it to the product output conveying rack 58 .

[0044] When the production line starts working, the workpiece (drive shaft head 8, drive shaft tube 10 and drive shaft tail 9) is transported to the set position by the three-component conveying mechanism 52, and the first transfer mechanism 59 arranged on the truss 50 moves back and forth to grab the workpiece and place it on the drive shaft press 53 for pressing process, and then the first transfer mechanism 59 grabs the workpiece to the next process straightening welding machine 54 for processing. In order to speed up the production rhythm, several straightening welding machines 54 are provided on the production line. After inspection and welding by the straightening welding machine 54, the workpiece is placed on the middle-end cooling conveyor rack 55 for cooling. After cooling, it is placed on the straightening machine 56 by the transfer robot 60 for re-inspection, and then the transfer robot 60 places the workpiece on the dynamic balancing machine 57 for balance performance inspection and correction during rotation, and finally the transfer robot 60 transports the workpiece to the product output conveyor to output the product.

[0045] Furthermore, the three-component conveying mechanism 52 includes three conveyors (not shown in the drawings), and the three conveyors can convey the drive shaft head 8, the drive shaft tube 10 and the drive shaft tail 9 respectively.

[0046] Furthermore, one side of the first transfer mechanism 59 and the transfer robot 60 is provided with a third driving member (not shown in the drawings) that can drive them to reciprocate on the slide 51.

[0047] like Figure 2-Figure 10 As shown, the transmission shaft press machine 53 includes a frame 2 having a slide rail 1, and a first movable thrust machine 3 and a second movable thrust machine 4 are slidably connected to the slide rail 1. A first press machine 5 and a second press machine 6 are respectively provided at both ends of the frame 2, and at least one of the first press machine 5 and the second press machine 6 can drive the first movable thrust machine 3 and the second movable thrust machine 4 to move in a direction close to each other.

[0048] Two first journal clamps 7 are also slidably connected to the slide rail 1, and the two first journal clamps 7 clamp and fix the transmission shaft head 8 and the transmission shaft tail 9 respectively. A plurality of second journal clamps 11 are arranged between the two first journal clamps 7, which can clamp and fix the transmission shaft tube 10. The two first journal clamps 7 and the plurality of second journal clamps 11 can keep the transmission shaft head 8, the transmission shaft tail 9 and the transmission shaft tube 10 coaxially arranged.

[0049] During the specific press-fitting operation, the transmission shaft head 8, the transmission shaft tail 9 and the transmission shaft tube 10 can be kept coaxially arranged by two first journal clamps 7 and a plurality of second journal clamps 11. Then, the first movable thruster 3 and the second movable thruster 4 are driven by two presses to move toward each other, so that the transmission shaft head 8, the transmission shaft tube 10 and the transmission shaft tail 9 are press-fitted into a whole, namely, the transmission shaft.

[0050] Furthermore, the first press machine 5 includes a housing 12, and two mutually independent thrust rods 13 and a connecting rod 14 are provided on one side of the housing 12, and the same end of the thrust rod 13 and the connecting rod 14 is fixedly connected through a fixing plate 15. The other end of the thrust rod 13 is fixedly connected or abutted with the first movable thrust machine 3 or the second movable thrust machine 4. A driving mechanism 16 that can drive the connecting rod 14 to reciprocate along its axial direction is provided on one side of the housing 12.

[0051] A plurality of limiting holes 17 are provided on one side of the thrust rod 13 , and a limiting cylinder 18 which can cooperate with the limiting holes 17 is also provided on one side of the housing 12 . The telescopic end of the limiting cylinder 18 can pass through the housing 12 and cooperate with the limiting hole 17 inside the housing 12 .

[0052] During specific use, the driving mechanism 16 drives the connecting rod 14 to reciprocate. Since the same end of the connecting rod 14 and the thrust rod 13 is connected through the fixed plate 15, the reciprocating motion of the connecting rod 14 will synchronously drive the thrust rod 13 to reciprocate, and then the thrust rod 13 acts on the first movable thrust machine 3 or the second movable thrust machine 4, so that the first movable thrust machine 3 or the second movable thrust machine 4 moves on the slide rail 1.

[0053] In addition, since the application field emphasized in this application is press-fitting, there will be a reaction force during the press-fitting process. When the first movable thruster 3 or the second movable thruster 4 is pushed to a certain position, the limit cylinder 18 makes an extension movement to cooperate with the limit hole 17 on the thrust rod 13 to prevent the force from reacting to the drive mechanism 16, so as to protect the drive mechanism 16.

[0054] Furthermore, the driving mechanism 16 includes a motor, a large pulley, a small pulley and a belt. A motor mounting seat for fixing the motor is provided on the frame 2, the output end of the motor passes through the motor mounting seat and is connected to the axis of the small pulley, the small pulley and the large pulley are connected by a belt, a rotating rod 19 is passed through the axis of the large pulley, and a bearing seat 20 is provided at one end of the rotating rod 19 that penetrates into the housing 12, and the bearing seat 20 is fixed to the inner wall of the housing 12.

[0055] A gear 21 is disposed at one end of the rotating rod 19 in the housing 12 , and a plurality of grooves 22 that can cooperate with the gear 21 are formed on the surface of the linkage rod 14 . The rotation of the gear 21 can drive the linkage rod 14 to move axially through the matching grooves 22 .

[0056] Furthermore, the first movable thruster 3 and the second movable thruster 4 both include a movable seat 23 that can be matched with the slide rail 1, a coupling flange 24 that can be fixedly connected or abutted with the thrust rod 13 is provided on one side of the movable seat 23, and a flange positioning tenon 25 is provided on the other side of the movable seat 23. Flange holes 26 that can be matched with the flange positioning tenon 25 are provided on the transmission shaft head 8 and the transmission shaft tail 9.

[0057] During press fitting, the thrust rod 13 acts on the coupling flange 24 on one side of the moving seat 23 to push the moving seat 23. This allows the flange positioning tenon 25 on one side of the moving seat 23 to be inserted into the flange hole 26 on the transmission shaft head 8 or the transmission shaft tail 9. The flange positioning tenon 25 cooperates with the flange hole 26 on the transmission shaft head 8 or the transmission shaft tail 9 to limit the position height of the transmission shaft head 8 or the transmission shaft tail 9, and further ensures that the transmission shaft head 8 and the transmission shaft tail 9 are coaxially arranged.

[0058] It should be noted that the transmission shaft head 8 described in this embodiment is equivalent to the universal joint fork mentioned in the background technology, and the transmission shaft tail 9 is equivalent to the floating connection sleeve mentioned in the background technology. Since the universal joint fork and the floating connection sleeve are the two ends of the transmission shaft, flange holes 26 are set in their own structures. However, this application makes use of the structure of the transmission shaft itself to improve installation efficiency and accuracy.

[0059] Furthermore, the first movable thruster 3 and the second movable thruster 4 further include a push-out cylinder 27, which is disposed on a cylinder seat 28, and one end of the cylinder seat 28 is fixedly connected to the movable seat 23. The telescopic end of the push-out cylinder 27 passes through one end of the cylinder seat 28 and is matched with an abutment block 29, which is located on the first journal fixture 7. When one side of the cylinder seat 28 moves to contact the abutment block 29, the flange positioning tenon 25 is positioned in place with the transmission shaft head 8 or the transmission shaft tail 9.

[0060] When the thrust rod 13 drives the movement of the movable seat 23, one end of the flange positioning tenon 25 is inserted into the flange hole 26 of the workpiece (referring to the transmission shaft head 8 and the transmission shaft tail 9), and the first movable thruster 3 or the second movable thruster 4 is continuously pushed to move to the position where the cylinder seat 28 contacts the abutment block 29, at which time the flange positioning tenon 25 and the workpiece are positioned in place. When the workpiece is pressed and the flange positioning tenon 25 needs to be separated, the push cylinder 27 extends to act on the abutment block 29, so that the workpiece and the flange positioning tenon 25 are separated.

[0061] Furthermore, the first journal clamp 7 and the second journal clamp 11 each include a pair of clamping fingers 30, and a clamping notch 31 is provided on the opposite sides of the pair of clamping fingers 30, and the clamping notch 31 can be matched with the transmission shaft head 8 or the transmission shaft tail 9 and the transmission shaft tube 10. A swing arm 32 is provided below each clamping finger 30, and a storage groove 33 is provided on the side of each swing arm 32 facing the other swing arm 32, and the same rotating arm 34 is provided in the two storage grooves 33, and the two ends of the rotating arm 34 are respectively connected to the two swing arms 32 for rotation.

[0062] Each swing arm 32 is provided with a limit block 35, and the two limit blocks 35 are respectively located at the two ends of a pair of clamping fingers 30 to limit the maximum displacement of the pair of clamping fingers 30 moving away from each other. A push rod 49 motor 36 is provided on one side of one of the limit blocks 35, and the output end of the push rod 49 motor 36 passes through the limit block 35 and is fixedly connected to the clamping finger 30.

[0063] A connecting rod 37 is provided on one side of each swing arm 32. One end of each connecting rod 37 is fixedly connected to the lower end surface of the limit block 35. The other end of each connecting rod 37 is fixedly connected to a slider 38. Each slider 38 is slidably connected to the slide rail.

[0064] When the workpiece is placed in the clamping notch 31 formed by a pair of clamping fingers 30, the output end of the push rod 49 motor 36 acts on one of the clamping fingers 30, and the two swing arms 32 rotate around the hinge points at both ends of the rotating arm 34. The pair of clamping fingers 30 move in a direction close to each other, thereby achieving an angle on the workpiece. It should be particularly noted that the movement displacement of the pair of clamping fingers 30 is the same, that is, the movement displacement of one of the clamping fingers 30 is the same as the movement displacement of the other clamping finger 30. Therefore, the transmission shaft head 8, the transmission shaft tail 9 and the transmission shaft tube 10 can be kept coaxially arranged.

[0065] Furthermore, an intermediate pin 39 is passed through one side of the rotating arm 34, and a support bracket 40 for supporting the workpiece is provided at the upper end of the intermediate pin 39. A first spring 41 is provided between the support bracket 40 and the rotating arm 34, and one end of the first spring 41 abuts against the upper end surface of the rotating arm 34, and the other end of the first spring 41 abuts against the lower end surface of the support bracket 40.

[0066] First, the present application sets an intermediate pin 39 in the middle of the rotating arm 34, so that under the action of the push rod 49 motor 36, the rotating arm 34 can rotate around the intermediate pin 39. At the same time, the swing arm 32 will rotate around the hinge point with the rotating arm 34 and rotate in the direction of clamping. During the clamping process, the first spring 41 is adjusted to the workpiece to avoid misalignment during press-fitting that affects the press-fitting quality. When it is necessary to release the clamping finger 30, the push rod 49 motor 36 is driven in reverse to make the rotating arm 34 and the swing arm 32 rotate in the opposite direction to release the clamping finger 30.

[0067] Furthermore, the frame 2 is also provided with a rack 42, which is arranged along the length direction of the frame 2. A driving wheel 43 is meshed with the rack 42, and a bracket 44 is provided on one side of the driving wheel 43 to abut against the side of the rack 42, and a mobile motor 45 is provided on one side of the bracket 44, and the output end of the mobile motor 45 passes through the bracket 44 and is fixedly connected to the driving wheel 43. A connecting member 46 is provided on one side of the bracket 44, and the connecting member 46 can be connected to the first journal fixture 7 or the second journal fixture 11.

[0068] The above components are connected to any first journal clamp 7 or second journal clamp 11 through the connecting piece 46, so that one or more or all of the two first journal clamps 7 and several second journal clamps 11 have a moving effect, thereby clamping the required clamping parts.

[0069] Furthermore, the first journal fixture 7 also includes a fixing bracket 47, which can support the transmission shaft head 8 or the transmission shaft tail 9, and the fixing bracket 47 can be connected to the supporting bracket 40 (not shown in the drawings).

[0070] Furthermore, the second press machine 6 includes a push rod box 48 and a push rod 49 , and the push rod 49 passes through one end of the push rod box 48 and abuts against the second movable thrust machine 4 .

[0071] Working process of transmission shaft press machine:

[0072] 1. Place the transmission shaft head 8 and the transmission shaft tail 9 on the fixing bracket 47 of the first journal fixture 7, and place the transmission shaft tube 10 on the supporting bracket 40 of the second journal fixture 11.

[0073] 2. Start the press machine, and then drive the first movable thrust machine 3 / the second movable thrust machine 4, so that the flange positioning tenon 25 is inserted into the flange positioning hole of the workpiece and stops moving for pre-positioning.

[0074] 3. The first journal clamp 7 and the second journal clamp 11 start the push rod 49 motor 36 to move the clamping fingers 30 toward each other to clamp the workpiece.

[0075] 4. Then drive the press to press the three parts together into a whole. This completes the press assembly of the transmission shaft.

[0076] In addition, the pre-positioning process of step 2, that is, the flange positioning tenon 25 is inserted into the flange positioning hole of the workpiece, can also be completed by driving the first journal fixture 7 to move on the slide rail 1 by the moving motor 45. The present invention should also protect and protect this technical solution.

[0077] In addition, the press-fitting process in step 4 is mainly performed by a press machine, and is supplemented by a moving motor 45 driving the first journal fixture 7 / the second journal fixture 11 to move on the slide rail 1 , thereby completing the press-fitting process together.

[0078] like Figure 11-Figure 17 As shown, the straightening welding machine 54 includes a frame 61, a workbench 62, a spindle head A63, a spindle head B64 and a detection mechanism 65 for monitoring the circumferential runout of the transmission shaft. The spindle head A63 and the spindle head B64 respectively fix the two ends of the automobile transmission shaft.

[0079] A welding mechanism 66 is disposed above the workbench 62, and a driving assembly 67 for adjusting the spatial position of the welding mechanism 66 is disposed on the frame 61. Under the action of the driving assembly 67, the welding mechanism 66 welds the to-be-welded portion of the automobile transmission shaft.

[0080] During specific use, the transmission shaft is first placed on the frame 61, and the two ends of the automobile transmission shaft are fixed respectively by the spindle head A63 and the spindle head B64. In addition, the spindle head A63 can also drive the transmission shaft to rotate. The specific working process of the straightening machine 56 can refer to the patent previously applied by our company.

[0081] The driving assembly 67 adjusts the spatial position of the welding mechanism 66 so that the welding mechanism 66 welds the part to be welded of the automobile transmission shaft. As the transmission shaft rotates on the workbench 62 under the action of the spindle head A63, the welding mechanism 66 rotates relative to the transmission shaft, and the welding mechanism 66 can achieve circumferential welding of the transmission shaft.

[0082] Furthermore, there are preferably two welding mechanisms 66, which correspond to the positions to be welded at both ends of the transmission shaft, respectively. The positions to be welded are the connection points between the two ends of the transmission shaft tube 10 and the transmission shaft head 8 and the transmission shaft tail 9, respectively.

[0083] Furthermore, the driving assembly 67 includes a vertical guide rail 68 and a first slide seat 69 slidably connected to the vertical guide rail 68, and a first driving member 70 is provided at one end of the vertical guide rail 68 to drive the first slide seat 69 to move on the vertical guide rail 68. One side of the first slide seat 69 is fixedly connected to the welding mechanism 66.

[0084] The height of the welding mechanism 66 in the vertical direction can be adjusted by the first driving member 70. When there is no transmission shaft placed on the workbench 62, the first driving member 70 drives the welding mechanism 66 to move upward, so that the distance between the welding mechanism 66 and the workbench 62 is enlarged, so that the transmission shaft can be placed on the workbench 62; when there is a transmission shaft placed on the workbench 62, the first driving member 70 controls the welding mechanism 66 to move downward, so as to achieve welding of the transmission shaft. It should be particularly noted that the vertical described in this application refers to the direction perpendicular to the workbench 62.

[0085] Furthermore, the driving assembly 67 also includes a horizontal guide rail 71 connected to the frame 61, and a second slide 72 is slidably connected to the horizontal guide rail 71, one side of the second slide 72 is fixedly connected to the vertical guide rail 68, and one end of the horizontal guide rail 71 is provided with a second driving member 73 that can drive the second slide 72 to move on the horizontal guide rail 71.

[0086] The second driving member 73 can adjust the horizontal movement of the vertical guide rail 68, thereby adjusting the horizontal movement of the welding mechanism 66. Since the specifications and lengths of the transmission shafts are different, the horizontal position of the welding mechanism 66 needs to be adjusted when welding different transmission shafts. It should be noted that the horizontal position described in this application refers to the horizontal setting along the length direction of the workbench 62.

[0087] Furthermore, two independent guide rails 74 are provided on the workbench 62, each of which is slidably connected to a movable plate 75, and the two movable plates 75 respectively support the spindle head A63 and the spindle head B64. A fourth driving member (not shown in the drawings) that can drive the movable plate 75 to move is provided at one end of each guide rail 74, and the two movable plates 75 are both penetrated with the same shielding member 76 for protecting the guide rail 74.

[0088] The distance between the spindle head A63 and the spindle head B64 is adjusted by the fourth driving member to adapt to the clamping of transmission shafts of different lengths. In addition, since sparks or other debris are generated during welding, and the guide rail 74 is a precision guide rail 74. In order to prevent sparks or debris during welding from damaging the guide rail 74, a shielding member 76 is required to shield it.

[0089] Furthermore, each section of the guide rail 74 is composed of two parallel driving rails, each of which is slidably connected to a movable block 77, and the upper end surfaces of the two movable blocks 77 are fixedly connected to the same moving plate 75. A side of each movable block 77 facing the other movable block 77 is provided with a clearance groove 78 that can cooperate with the shielding member 76.

[0090] Furthermore, the shielding member 76 includes a fixing plate 15 having a receiving groove 79 , and the receiving groove 79 can be used to contain impurities such as shavings generated during welding. Both ends of the fixing plate 15 are provided with folding edges 80 that can be matched with the giving way groove 78 .

[0091] Furthermore, the two movable plates 75 are both sleeved with protective covers 81 for protecting the spindle head A63 and the spindle head B64 respectively. The protective covers 81 can protect the spindle head A63 and the spindle head B64.

[0092] In addition, since the detection mechanism 65 has a detector 85, in order to avoid damage to the detector 85 during the welding process, the present application also improves the detection mechanism 65, as follows:

[0093] Furthermore, the detection mechanism 65 includes a measuring frame 82 connected to the spindle head, a rotating block 83 is hinged on one side of the measuring frame 82, a pressure rod 84 located above the transmission shaft is provided at one end of the rotating block 83, and a detector 85 is abutted against the other end of the rotating block 83. The pressure rod 84 can be fitted on the surface of the transmission shaft, and the detector 85 can detect the circumferential runout of the transmission shaft contacted by the pressure rod 84, so that the manufacturer can detect the straightening accuracy of the transmission shaft through the detection mechanism 65.

[0094] A top plate 86 for fixing the detector 85 is provided on the top of the measuring frame 82, and a baffle 87 for protecting the detector 85 from the influence of welding is also provided on the top plate 86. A second spring 88 is provided between the baffle 87 and the rotating block 83. Under the action of the second spring 88, the pressure rod 84 at one end of the rotating block 83 contacts the surface of the transmission shaft, and the other end of the rotating block 83 contacts the detector 85.

[0095] The second spring 88 can effectively improve the fit of the pressure rod 84 and the transmission shaft after contact, avoid the possibility of the pressure rod 84 jumping and misalignment, and effectively improve the accuracy of the jumping of the transmission shaft contacted by the pressure rod 84. In addition, the baffle 87 can effectively protect the detector 85 from being affected by welding.

[0096] Furthermore, a protective shell 89 for protecting the detection mechanism 65 is disposed on the workbench 62 , and an opening 90 is formed on the protective shell 89 for the pressure rod 84 to pass through.

[0097] Furthermore, the straightening machine 56 is a prior art, and the details can be referred to the patents previously applied by our company, and will not be described in detail here.

[0098] The specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, such modifications are protected by the patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A transmission shaft production line, characterized in that: The invention comprises a truss (50) and a slideway (51) arranged on the truss (50), wherein a three-component conveying mechanism (52), a transmission shaft press machine (53), a straightening welding machine (54), a mid-end cooling conveying rack (55), a straightening machine (56), a dynamic balancing machine (57) and a product output conveying rack (58) are arranged in sequence from left to right below the truss (50), wherein the three-component conveying mechanism (52) is used to convey a transmission shaft head (8), a transmission shaft tube (10) and a transmission shaft tail (9) to the transmission shaft press machine (53) side respectively; The slideway (51) is slidably provided with a first transfer mechanism (59) which can transfer the transmission shaft head (8), the transmission shaft tube (10) and the transmission shaft tail (9) on the three-component conveying mechanism (52) to the transmission shaft press-fitting machine (53) at the same time. The first transfer mechanism (59) also transfers the transmission shaft that has been press-fitted on the transmission shaft press-fitting machine (53) to the straightening welding machine (54) for welding and straightening operations. The slideway (51) is also slidably provided with a transfer robot (60) which can transfer the transmission shaft that has been processed on the straightening welding machine (54) to the middle-end cooling conveying rack (55), the straightening machine (56) and the dynamic balancing machine (57) in sequence, and finally transfer it to the product output conveying rack (58). The transmission shaft press (53) comprises a frame (2) having a slide rail (1), a first movable thrust machine (3) and a second movable thrust machine (4) being slidably connected to the slide rail (1), a first press machine (5) and a second press machine (6) being respectively arranged at two ends of the frame (2), and at least one of the first press machine (5) and the second press machine (6) can drive the first movable thrust machine (3) and the second movable thrust machine (4) to move in a direction approaching each other; The slide rail (1) is also slidably connected to two first shaft neck clamps (7), the two first shaft neck clamps (7) respectively clamp and fix the transmission shaft head (8) and the transmission shaft tail (9), and a plurality of second shaft neck clamps (11) are arranged between the two first shaft neck clamps (7) for clamping and fixing the transmission shaft tube (10), and the two first shaft neck clamps (7) and the plurality of second shaft neck clamps (11) can keep the transmission shaft head (8), the transmission shaft tail (9) and the transmission shaft tube (10) coaxially arranged; The first press machine (5) comprises a housing (12), one side of the housing (12) is provided with two mutually independent thrust rods (13) and a connecting rod (14), the same end of the thrust rod (13) and the connecting rod (14) are fixedly connected via a fixing plate (15), the other end of the thrust rod (13) is fixedly connected or abutted with the first movable thrust machine (3) or the second movable thrust machine (4), and one side of the housing (12) is provided with a driving mechanism (16) capable of driving the connecting rod (14) to reciprocate along its axial direction; A plurality of limiting holes (17) are arranged on one side of the thrust rod (13), and a limiting cylinder (18) which can cooperate with the limiting holes (17) is also arranged on one side of the housing (12), and the telescopic end of the limiting cylinder (18) can pass through the housing (12) and cooperate with the limiting hole (17) inside the housing (12); The first shaft neck clamp (7) and the second shaft neck clamp (11) each include a pair of clamping fingers (30), and a clamping notch (31) is provided on the opposite sides of the pair of clamping fingers (30). The clamping notch (31) can be matched with the transmission shaft head (8) or the transmission shaft tail (9) or the transmission shaft tube (10). A swing arm (32) is provided below each of the clamping fingers (30), and a storage groove (33) is provided on the side of each of the swing arms (32) facing the other swing arm (32). The same rotating arm (34) is provided in the two storage grooves (33), and the two ends of the rotating arm (34) are respectively rotatably connected to the two swing arms (32). A limit block (35) is provided on each swing arm (32), and the two limit blocks (35) are respectively located at the two ends of a pair of clamping fingers (30), and a push rod (49) motor (36) is provided on one side of one of the limit blocks (35), and the output end of the push rod (49) motor (36) passes through the limit block (35) and is fixedly connected to the clamping finger (30); A connecting rod (37) is provided on one side of each swing arm (32), one end of each connecting rod (37) is fixedly connected to the lower end surface of the limit block (35), the other end of each connecting rod (37) is fixedly connected to a sliding block (38), and each sliding block (38) is slidably connected to the slide rail; The straightening welding machine (54) comprises a frame (61), a workbench (62), a spindle head A (63), a spindle head B (64) and a detection mechanism (65) for monitoring the circumferential runout of the transmission shaft, wherein the spindle head A (63) and the spindle head B (64) respectively fix two ends of the automobile transmission shaft; A welding mechanism (66) is arranged above the workbench (62), and a driving assembly (67) capable of adjusting the spatial position of the welding mechanism (66) is arranged on the frame (61); under the action of the driving assembly (67), the welding mechanism (66) welds the to-be-welded portion of the automobile transmission shaft; There are two welding mechanisms (66), which respectively correspond to the positions to be welded at both ends of the transmission shaft. The positions to be welded are the connection points between the two ends of the transmission shaft tube (10) and the transmission shaft head (8) and the transmission shaft tail (9).

2. A transmission shaft production line according to claim 1, characterized in that: The first movable thruster (3) and the second movable thruster (4) both include a movable seat (23) that can be matched with the slide rail (1), one side of the movable seat (23) is provided with a coupling flange (24) that can be fixedly connected or abutted with the thrust rod (13), the other side of the movable seat (23) is provided with a flange positioning tenon (25), and the transmission shaft head (8) and the transmission shaft tail (9) are both provided with flange holes (26) that can be matched with the flange positioning tenon (25).

3. A transmission shaft production line according to claim 2, characterized in that: The first movable thruster (3) and the second movable thruster (4) further include an ejection cylinder (27), wherein the ejection cylinder (27) is arranged on a cylinder seat (28), one end of the cylinder seat (28) is fixedly connected to the movable seat (23), and the telescopic end of the ejection cylinder (27) passes through one end of the cylinder seat (28) and is matched with an abutment block (29), wherein the abutment block (29) is located on the first shaft neck clamp (7); when one side of the cylinder seat (28) moves to contact the abutment block (29), the flange positioning tenon (25) is positioned in place with the transmission shaft head (8) or the transmission shaft tail (9).

4. A transmission shaft production line according to claim 3, characterized in that: A middle pin (39) is provided on one side of the rotating arm (34); a support bracket (40) for supporting a workpiece is provided at the upper end of the middle pin (39); a first spring (41) is provided between the support bracket (40) and the rotating arm (34); one end of the first spring (41) abuts against the upper end surface of the rotating arm (34); and the other end of the first spring (41) abuts against the lower end surface of the support bracket (40); a rack (42) is also provided on the frame (2); and the rack (42) extends along the length of the frame (2). The rack (42) is arranged in a direction, a driving wheel (43) is meshed on the rack (42), a bracket (44) abutting against the side of the rack (42) is arranged on one side of the driving wheel (43), a moving motor (45) is arranged on one side of the bracket (44), an output end of the moving motor (45) passes through the bracket (44) and is fixedly connected to the driving wheel (43), a connecting piece (46) is arranged on one side of the bracket (44), and the connecting piece (46) can be connected to the first shaft neck clamp (7) or the second shaft neck clamp (11).

5. The transmission shaft production line according to claim 1, characterized in that: The workbench (62) is provided with two independent guide rails (74), each of which is slidably connected to a movable plate (75), and the two movable plates (75) respectively support the spindle head A (63) and the spindle head B (64), and one end of each guide rail (74) is provided with a fourth driving member capable of driving the movable plate (75) to move, and the two movable plates (75) are both provided with a same shielding member (76) for protecting the guide rail (74); Each section of the guide rail (74) is composed of two mutually parallel driving rails, each of which is slidably connected to a movable block (77), the upper end surfaces of the two movable blocks (77) are fixedly connected to the same movable plate (75), and each movable block (77) is provided with a clearance groove (78) that can cooperate with the shielding member (76) on one side facing the other movable block (77); The shielding member (76) comprises a fixing plate (15) having a receiving groove (79), wherein the receiving groove (79) can be used to contain debris generated during welding, and both ends of the fixing plate (15) are provided with folding edges (80) that can cooperate with the giving way groove (78).

6. A transmission shaft production line according to claim 5, characterized in that: The detection mechanism (65) comprises a measuring frame (82) connected to the spindle head, a rotating block (83) is hinged on one side of the measuring frame (82), a pressure rod (84) located above the transmission shaft is arranged at one end of the rotating block (83), a detector (85) is abutted at the other end of the rotating block (83), a top plate (86) for fixing the detector (85) is arranged at the top of the measuring frame (82), a baffle (87) for protecting the detector (85) from welding is also arranged on the top plate (86), a second spring (88) is arranged between the baffle (87) and the rotating block (83), under the action of the second spring (88), the pressure rod (84) at one end of the rotating block (83) contacts the surface of the transmission shaft, and the other end of the rotating block (83) contacts the detector (85).

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