A welding auxiliary fixing device special for computer U-shaped case

Abstract

The present application relates to the field of welding technology special for computer case, especially relates to a kind of welding auxiliary fixing device special for computer U-shaped case, including base, limit portion is arranged above base, installation portion is fixedly arranged on base, a pair of electric guide rail is arranged on installation portion, and the interface portion is arranged below electric guide rail, the rotating portion and the connecting portion are rotatably arranged below interface portion, the fixed portion is arranged below rotating portion, a pair of clamping elements are arranged below fixed portion, the transmission portion is arranged below connecting portion, and the welding portion is rotatably arranged below transmission portion;Drive assembly is arranged on base;Switching assembly is arranged below connecting portion.The present application is cooperatively arranged by switching assembly and other components, compared with welding in the prior art, synchronous angle adjustment of workpiece and welding portion is realized under the transmission mode that spline shaft remains plug-in state, welding portion can also be individually driven to adjust pitch angle, and the linkage and adaptability of angle adjustment are improved.

Description

Technical Field

[0001] This invention relates to the field of welding technology for computer chassis, and in particular to a welding auxiliary fixing device for U-shaped computer chassis. Background Technology

[0002] A computer U-shaped chassis refers to a computer host casing with a U-shaped cross-section structure, used to support internal hardware such as the motherboard and power supply. It is also called a U-shaped host casing. Simply splicing the casing together does not provide enough rigidity and does not meet the needs of actual applications. In order to ensure structural strength and sealing, welding process is required to improve the stability and durability of the whole machine.

[0003] The conventional U-shaped chassis welding process in the existing technology involves manually driving the positioning fixture and welding torch to complete the welding of the corresponding welds between the chassis body and the sealing end plates of a single workpiece in a step-by-step, independent operation. However, due to the differences in the weld positions of workpieces of different specifications, it is difficult to adapt to the preset fixed welding path, making it difficult to form a continuous processing flow. This leads to a longer single-station operation cycle, ultimately restricting the improvement of welding processing production efficiency. Summary of the Invention

[0004] The purpose of this invention is to solve the problem in the prior art that the difference in the weld position of workpieces of different specifications cannot be adapted to the preset fixed welding path, making it difficult to form a continuous processing flow, which in turn leads to a longer single-station operation cycle and ultimately restricts the improvement of welding processing production efficiency. Therefore, a special welding auxiliary fixing device for computer U-shaped chassis is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A welding auxiliary fixing device for a U-shaped computer chassis includes a base. At least two pairs of limiting parts for fixing the chassis are provided on the top of the base. A mounting part is fixedly provided on the base. A pair of electrical guide rails are horizontally slidably arranged on the mounting part along the length of the base. A connecting part is provided below the electrical guide rails. A rotating part and a connecting part are rotatably arranged below the connecting part. A fixing part is provided below the rotating part. A pair of clamping elements for clamping the workpiece to be welded are horizontally slidably arranged below the fixing part. A transmission part is provided below the connecting part. A welding part for welding is rotatably arranged below the transmission part. The base is provided with a drive assembly for driving the limiting part to slide horizontally. A switching component is provided below the connecting part to enable the fixing part and the transmission part to rotate synchronously.

[0006] Preferably, a rotating seat is rotatably provided on the connecting part, and the connecting part and the rotating seat are fixedly connected. A second power unit for driving the rotating seat to rotate is fixedly provided on the connecting part, and the rotating part and the bottom end of the rotating seat are fixedly connected.

[0007] Preferably, the switching component includes a connector and individual components; The connector includes a connecting shaft, a rotating end, a linear drive component, and a splined shaft. The rotating end rotates on the connecting part and rotates coaxially with the connecting shaft. The linear drive is fixed at one end of the connecting shaft, and the spline shaft is fixed at the end of the linear drive away from the connecting shaft.

[0008] Preferably, the connector further includes a drive shaft, a worm gear drive section, and a bevel gear meshing section; The drive shaft has a insertion hole at one end relative to the spline shaft. After the drive shaft rotates, it drives the worm gear transmission part, which in turn drives the bevel gear meshing part to rotate.

[0009] Preferably, the individual component includes a support base, a toothed spur gear portion, and a driven shaft; The support base is fixedly disposed relative to the spline shaft. After the support base moves horizontally, the spur gear part of the gear plate meshes, and the spur gear part of the gear plate drives the driven shaft to rotate.

[0010] Preferably, the driven shaft and the welded part rotate coaxially.

[0011] Preferably, a slider is horizontally slidably disposed on the mounting part, the slider and the electric rail are fixedly disposed on the same slide block, and a linear drive component for driving the slider to slide horizontally is fixedly disposed on the mounting part.

[0012] Preferably, a locking block is provided on the electric guide rail, a synchronization seat is fixedly provided at the bottom of the locking block, a second linear drive component is fixedly provided at the bottom of the synchronization seat, a guide rod slides vertically through the synchronization seat, the second linear drive component and the guide rod are fixedly provided with the same main board base at their bottom ends, and the connecting part is fixedly provided at the bottom end of the main board base.

[0013] Preferably, a sleeve block is fixedly sleeved on the rotating rod, and a linear drive component three for driving the fixed part to rise and fall is provided at the bottom of the sleeve block; The fixing part is provided with a clamping fixture for driving the two clamping elements to move horizontally relative to each other to clamp the workpiece.

[0014] Preferably, the drive assembly includes a connecting ear and a transmission rod. A pair of connecting ears are fixedly mounted on the base, and the second transmission rod is fixedly mounted on the limiting part and horizontally slidably mounted on the opposite sides of the two connecting ears.

[0015] Compared with the prior art, the beneficial effects of this invention are as follows: 1. This invention achieves rapid positioning and clamping of the machine body by coordinating the limiting part and the bidirectional lead screw. The transmission rod is fixed on the threaded block, and the limiting part is fixedly installed on the side wall of the transmission rod. The bidirectional lead screw drives the threaded block to slide along the slide bar to achieve rapid positioning and clamping of the machine body, replacing the manual alignment and clamping method. This improves the stability and alignment efficiency of the workpiece clamping, thereby further ensuring the processing accuracy and operational stability of subsequent welding operations.

[0016] 2. This invention achieves synchronous angle adjustment between the workpiece and the welding part by coordinating the spline shaft and the drive shaft. The spline shaft is inserted and installed at the end of the drive shaft, and the welding part is driven and installed on the drive shaft. Under the transmission mode in which the spline shaft is kept in the inserted state, the workpiece and the welding part can be adjusted synchronously. The welding part can also be driven to adjust the pitch angle independently, which improves the linkage and adaptability of angle adjustment, thereby further shortening the time spent on pre-welding station adjustment and simplifying the operation process.

[0017] 3. This invention achieves self-locking fixation of the workpiece side rotation angle by coordinating the worm gear and worm shaft. The worm gear is fixedly mounted on the rotating shaft, and the worm shaft is rotatably mounted on the vertical seat and meshes with the worm gear. Under the condition that the spline shaft is disengaged from the transmission shaft, the workpiece side rotation angle is fixed, which avoids the workpiece position from shifting when the welding angle is adjusted, improves the workpiece position holding ability and reliability, and further provides a stable processing basis for subsequent individual adjustment of the welding angle.

[0018] 4. This invention utilizes the coordinated arrangement of a toothed plate and a spur gear. The toothed plate is slidably mounted on the support base, while the spur gear is fixedly mounted on the end of the driven shaft and meshes with the toothed plate. Under the horizontal movement of the four-drive toothed plate of the linear drive component, the pitch angle of the welding section can be adjusted independently without the need for synchronous action of the workpiece side clamping structure. This improves the flexibility and adaptability of the welding angle adjustment, thereby further meeting the processing requirements and welding quality requirements of welds with different orientations. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a special welding auxiliary fixing device for a computer U-shaped chassis proposed in this invention; Figure 2 This is a schematic diagram of the locking block in a special welding auxiliary fixing device for a computer U-shaped chassis proposed in this invention; Figure 3 This is a schematic diagram of the welding section in a special welding auxiliary fixing device for a computer U-shaped chassis proposed in this invention; Figure 4This is a schematic diagram of the toothed plate and spur gear in a special welding auxiliary fixing device for a U-shaped computer chassis proposed in this invention; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 This is a schematic diagram of the limiting part in a special welding auxiliary fixing device for a computer U-shaped chassis proposed in this invention.

[0020] In the diagram: 1. Base; 2. Limiting part; 201. Connecting ear; 202. Slide rod; 203. Two-way lead screw one; 204. Threaded block; 205. Power unit one; 206. Transmission rod one; 207. Transmission rod two; 3. Mounting part; 301. Slider; 302. Linear drive component one; 303. Slide seat; 4. Electric guide rail; 401. Locking block; 402. Synchronizing seat; 403. Linear drive component two; 404. Guide rod; 405. Main board seat; 5. Connecting part; 501. Rotary seat; 502. Power unit two; 6. Rotating part; 601. Rotating rod; 602. Sleeve block one; 603. Linear drive component three; 7. Connecting part; 701. Concave plate; 702. Connecting shaft; 703. Power unit three; 704. 705. Sleeve 2; 706. Linear drive component 4; 707. Push plate; 708. Splined shaft; 709. Sleeve base; 710. Vertical rod; 711. Support base; 712. Limiting rail; 713. Gear plate; 714. Side plate; 715. Screw; 716. Threaded plate; 717. Power unit 4; 718. Auxiliary plate; 719. Vertical seat; 720. Rotating shaft; 721. Worm gear; 722. Bevel gear 1; 723. Worm; 724. Drive shaft; 725. Bevel gear 2; 8. Fixed part; 801. Two-way lead screw 2; 802. Power unit 5; 803. Moving plate; 804. Clamping element; 9. Transmission part; 901. Driven shaft; 902. Driven seat; 903. Welding part; 904. Spur gear. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] Reference Figures 1-6 A special welding auxiliary fixing device for computer U-shaped chassis includes a base 1, a limiting part 2, a mounting part 3, an electric guide rail 4, a connecting part 5, a rotating part 6, a connecting part 7, a fixing part 8, a clamping element 804, a transmission part 9, a welding part 903, a drive assembly, and a switching assembly. Using the above components, the chassis positioning and clamping, workpiece clamping, and welding angle multi-mode coordinated adjustment can be completed. Compared with the traditional manual step-by-step processing method, the station switching process is more coherent and the angle adjustment accuracy is more stable.

[0023] The combined effect of the above components is that the rotation angle of the workpiece and the welding part can be adjusted synchronously or individually to adapt to welds with different orientations. At the same time, it has a self-locking positioning function, which improves the adaptability and processing efficiency of welding operations.

[0024] Reference Figure 1 The limiting part 2 is located above the base 1, and there are no fewer than two pairs of them. It is used to fix the chassis. The shape of the limiting part 2 is preferably L-shaped block, which is used to abut against the side surface of the chassis body to provide a stable base positioning reference for welding operations.

[0025] Reference Figure 1 The mounting part 3 is fixedly mounted on the base 1. The shape of the mounting part 3 is preferably a long strip plate, which extends along the length of the base 1 to provide support and guidance for the sliding of the electric guide rail 4.

[0026] Reference Figure 1 The electric guide rail 4 is horizontally slidably mounted on the mounting part 3 and arranged along the length of the base 1. There is a pair of them. The electric guide rail 4 can slide longitudinally along the mounting part 3 to adjust the longitudinal position of the welding station and adapt to the processing requirements of chassis of different lengths.

[0027] Reference Figure 3 The connecting part 5 is located below the electric guide rail 4. The shape of the connecting part 5 is preferably a U-shaped plate, which is used to support the rotating seat 501 and the driving component, and connect the upper sliding structure and the lower rotating structure.

[0028] Reference Figure 3 The rotating part 6 is rotatably disposed below the connecting part 5. The shape of the rotating part 6 is preferably a concave block shape, which is used to transmit rotational torque and drive the workpiece clamping structure below to rotate synchronously.

[0029] Reference Figure 3 The connecting part 7 is rotatably disposed below the connecting part 5. The shape of the connecting part 7 is preferably a U-shaped plate, which is used to support the adjustment component on the welding side and realize linkage or independent control with the workpiece side.

[0030] Reference Figure 3 The fixing part 8 is located below the rotating part 6. The shape of the fixing part 8 is preferably a U-shaped plate, which provides a mounting carrier and guide structure for the sliding of the clamping element 804.

[0031] Reference Figure 3 The clamping elements 804 are horizontally slidably disposed below the fixed part 8, and there is a pair of them. They are used to clamp the workpiece to be welded. The shape of the clamping elements 804 is preferably a clamping block, which can stably clamp the plate-shaped workpiece and keep the position from shifting during the welding process.

[0032] Reference Figure 3The transmission part 9 is located below the connecting part 7. The shape of the transmission part 9 is preferably a U-shaped block, which provides mounting support and transmission interface for the rotation of the welding part 903.

[0033] Reference Figure 3 The welding part 903 is rotatably mounted below the transmission part 9 and is used for welding operations. The welding part 903 can output a welding heat source to complete the welding process between the chassis and the sealing end plate.

[0034] Reference Figure 6 The drive component is mounted on the base 1 and is used to drive the limiting part 2 to slide horizontally. The drive component can drive the limiting part to move towards or away from each other, thereby realizing the clamping and loosening action of the chassis body.

[0035] Reference Figures 3-5 The switching component is located below the connecting part 7 to enable the fixing part 8 and the transmission part 9 to rotate synchronously. The switching component can switch between linkage and individual adjustment modes to adapt to different welding adjustment requirements.

[0036] Reference Figure 3 The rotatable base 501 is rotatably mounted on the connecting part 5. The connecting part 7 and the rotatable base 501 are fixedly connected. The rotatable base 501 is preferably block-shaped. The bottom end is fixedly connected to the rotating part 6 and the connecting part 7 respectively, which is used to transmit rotational power to drive the lower structure to rotate synchronously.

[0037] Reference Figure 3 The second power unit 502 is fixedly installed on the connecting part 5 and is used to drive the rotary table 501 to rotate. The second power unit 502 preferably uses, but is not limited to, the model YS7124. The advantage of this model is that it runs smoothly and has sufficient torque. Its main purpose is to drive the rotary table 501 to rotate and adjust the station angle. It is an existing mature technology, so it will not be described in detail here.

[0038] Reference Figure 3 The rotating part 6 is fixedly connected to the bottom end of the rotating base 501 and can rotate synchronously with the rotating base 501, thereby driving the workpiece clamping structure below to adjust the circumferential angle.

[0039] Reference Figure 3 The switching components include plug-in parts and individual parts. The two types of parts work together to achieve the switching of rotation modes and angle adjustment functions.

[0040] Reference Figures 3-5 The connector includes a concave plate 701, a connecting shaft 702, a power unit 3 703, a sleeve block 2 704, a linear drive component 4 705, a push plate 706, a spline shaft 707, a rotating rod 601, an auxiliary plate 717, a vertical seat 718, a rotating shaft 719, a worm gear 720, a bevel gear 1 721, a worm 722, a transmission shaft 723, and a bevel gear 2 724.

[0041] Reference Figure 3The concave plate 701 is fixedly installed on one side of the bottom of the connecting part 7. The shape of the concave plate 701 is preferably U-shaped, providing rotational support and mounting position for the connecting shaft 702.

[0042] Reference Figure 4 The connecting shaft 702 is rotatably mounted on the concave plate 701. The shape of the connecting shaft 702 is preferably a round shaft, which is used to transmit the rotational torque of the power unit 3 703 and drive the sleeve block 2 704 to rotate synchronously.

[0043] Reference Figure 3 The power unit 3 703 is fixedly mounted on the concave plate 701 and is used to drive the connecting shaft 702 to rotate. The power unit 3 703 preferably uses, but is not limited to, the model 57BYG250B. The advantage of this model is that it has high positioning accuracy and controllable speed. Its main purpose is to drive the connecting shaft 702 to rotate and adjust the welding angle. It is an existing mature technology, so it will not be described in detail here.

[0044] Reference Figure 3 The second sleeve 704 is fixedly sleeved on the connecting shaft 702, and its bottom is fixedly connected to the transmission part 9. It is used to drive the transmission part 9 to rotate synchronously with the connecting shaft 702 and adjust the circumferential angle of the welding part.

[0045] Reference Figure 4 The linear drive component 705 is fixedly installed at the end of the connecting shaft 702. The linear drive component 705 is preferably, but not limited to, the CDJ2B10-30 model. The advantage of this model is its small size and fast action response. Its main purpose is to push the push plate 706 to move to realize the insertion and separation of the spline shaft 707. It is an existing mature technology, so it will not be discussed further here.

[0046] Reference Figure 4 The push plate 706 is fixedly installed at the end of the linear drive component 705 to support the spline shaft 707 and moves horizontally synchronously with the extension and retraction of the linear drive component 705.

[0047] Reference Figure 4 The spline shaft 707 is fixedly mounted on the side wall of the push plate 706 away from the linear drive component 705. The spline shaft 707 is preferably in the shape of a splined round shaft, and is used to connect with the drive shaft 723 to achieve power linkage, or to separate to achieve power cut-off.

[0048] Reference Figure 5 The rotating rod 601 is rotatably mounted on the rotating part 6. The shape of the rotating rod 601 is preferably a round shaft, which is used to transmit the rotational torque on the workpiece side and rotate synchronously with the bevel gear 724.

[0049] Reference Figure 5 Auxiliary plates 717 are fixedly mounted in pairs on the connecting part 7. The auxiliary plates 717 are preferably plate-shaped and provide rotation support points for the rotating shaft 719.

[0050] Reference Figure 5 The vertical seat 718 is fixedly installed below the connecting part 7. The shape of the vertical seat 718 is preferably vertical block-shaped, providing a support structure for the worm gear 722 to be rotated and installed.

[0051] Reference Figure 5 The rotating shaft 719 is rotatably mounted on the opposite sidewalls of the two auxiliary plates 717. The shape of the rotating shaft 719 is preferably a round shaft, which is used to support the synchronous rotation of the worm gear 720 and the bevel gear 721.

[0052] Reference Figure 5 The worm gear 720 is fixedly sleeved on the rotating shaft 719 and is used to mesh with the worm 722 for transmission, so as to realize the self-locking function of the rotation angle.

[0053] Reference Figure 5 The first bevel gear 721 is fixedly sleeved on the rotating shaft 719 and is used to mesh with the second bevel gear 724 to transmit the rotational torque on the workpiece side.

[0054] Reference Figure 5 The worm 722 is rotatably mounted on the vertical seat 718 and meshes with the worm wheel 720. The worm 722 is preferably screw-shaped and is used to cooperate with the worm wheel 720 to form a self-locking structure, restricting the reverse rotation of the shaft 719.

[0055] Reference Figure 5 The drive shaft 723 is fixedly mounted at the end of the worm 722 and is horizontally slidably inserted into the spline shaft 707. The drive shaft 723 is preferably a round shaft with a spline hole, and is used to transmit the rotational torque of the spline shaft 707 to drive the worm 722 to rotate.

[0056] Reference Figure 5 The second bevel gear 724 is coaxially fixed at the end of the rotating rod 601 and meshes with the first bevel gear 721. It is used to transmit the rotation of the rotating shaft 719 to the rotating rod 601, so as to realize the power linkage between the workpiece side and the transmission side.

[0057] Reference Figure 4 Individual components include a sleeve 708, a vertical rod 709, a support seat 710, a limit rail 711, a toothed plate 712, a side plate 713, a screw 714, a threaded plate 715, a power unit 716, a driven shaft 901, a driven seat 902, and a spur gear 904.

[0058] Reference Figure 4 The sleeve 708 is fixedly sleeved on the spline shaft 707. The sleeve 708 is preferably plate-shaped and is used to support the vertical rod 709. It moves and rotates horizontally synchronously with the spline shaft 707.

[0059] Reference Figure 4The vertical rod 709 is fixedly mounted on the sleeve 708. The shape of the vertical rod 709 is preferably round. It is used to connect the sleeve 708 and the support base 710 and transmit the vertical support force.

[0060] Reference Figure 4 The support base 710 is fixedly installed at the bottom of the vertical rod 709. The support base 710 is preferably block-shaped, providing an installation carrier for the limit rail 711 and the side plate 713.

[0061] Reference Figure 4 The limiting rail 711 is horizontally slidably mounted on the support base 710. The limiting rail 711 is preferably long and I-shaped, used to support the toothed plate 712 and provide guidance for the horizontal sliding of the toothed plate 712.

[0062] Reference Figure 4 The toothed plate 712 is fixedly installed at the top of the limiting rail 711. The toothed plate 712 is preferably long and toothed, and is used to mesh with the spur gear 904 to drive the welding part 903 to adjust the pitch angle.

[0063] Reference Figure 4 The side plate 713 is fixedly mounted on the support base 710. The side plate 713 is preferably vertical in shape, providing a rotation support point for the screw 714.

[0064] Reference Figure 4 The screw 714 is rotatably mounted on the side plate 713. The screw 714 is preferably threaded rod-shaped and is used to engage with the threaded plate 715 to convert rotation into linear movement.

[0065] Reference Figure 4 The threaded plate 715 is fixedly mounted on the toothed plate 712 and threadedly connected to the screw 714, and is used to drive the toothed plate 712 to move horizontally synchronously with the rotation of the screw 714.

[0066] Reference Figure 4 The power unit 716 is fixedly mounted on the side plate 713 and is used to drive the screw 714 to rotate. The power unit 716 preferably uses, but is not limited to, the 42BYGH40 model. The advantage of this model is its small size and high control precision. Its main purpose is to drive the screw to rotate and adjust the position of the toothed plate. It is an existing mature technology, so it will not be discussed further here.

[0067] Reference Figure 4 The driven shaft 901 is rotatably mounted on the transmission part 9. The driven shaft 901 is preferably round and is used to support the driven seat 902 and the spur gear 904 to rotate synchronously.

[0068] Reference Figure 4The driven seat 902 is fixedly sleeved on the driven shaft 901 and fixedly connected to the welding part 903, and is used to drive the welding part 903 to rotate synchronously with the driven shaft 901 to adjust the pitch angle.

[0069] Reference Figure 4 The spur gear 904 is fixedly mounted at the end of the driven shaft 901 and meshes with the gear plate 712, and is used to convert the linear movement of the gear plate 712 into the rotation of the driven shaft 901.

[0070] Reference Figure 1 The slider 301 is horizontally slidably mounted on the mounting part 3. The slider 301 is preferably I-shaped and is used to support the slide block 303 and drive the electric guide rail 4 to slide horizontally along the mounting part 3.

[0071] Reference Figure 1 The slide block 303 is fixedly mounted on the slider 301 and the electric rail 4. It is an integral structure and is used to connect the slider 301 and the electric rail 4 to achieve synchronous sliding of the two.

[0072] Reference Figure 1 The linear drive unit 302 is fixedly mounted on the mounting part 3 and is used to drive the slider 301 to slide horizontally. The linear drive unit 302 is preferably, but not limited to, the SC32-100 model. The advantage of this model is that the thrust is stable and the stroke is sufficient. Its main purpose is to drive the slider to slide and adjust the transverse position. It is an existing mature technology, so it will not be described in detail here.

[0073] Reference Figure 2 The locking block 401 is set on the electric guide rail 4. The shape of the locking block 401 is preferably a locking block shape, which is locked in the guide rail groove of the electric guide rail 4 and can slide longitudinally along the electric guide rail 4.

[0074] Reference Figure 2 The synchronizing seat 402 is fixedly installed at the bottom of the locking block 401 to support the linear drive component 403 and the guide rod 404, and moves synchronously with the locking block 401.

[0075] Reference Figure 2 The second linear drive component 403 is fixedly installed at the bottom of the synchronous seat 402. The second linear drive component 403 is preferably, but not limited to, the model CDJ2B16-40. The advantage of this model is that it lifts and lowers smoothly and occupies little space. Its main purpose is to drive the motherboard seat 405 to lift and adjust the welding height. It is an existing mature technology, so it will not be discussed further here.

[0076] Reference Figure 3 The guide rod 404 slides vertically through the synchronous seat 402. The guide rod 404 is preferably round and is used to guide the vertical movement of the main board seat 405 to avoid deviation.

[0077] Reference Figure 3 The main board base 405 is fixedly installed at the bottom of the linear drive component 403 and the guide rod 404, forming a single integral structure. The bottom end is fixedly provided with a connecting part 5, which is used to drive the lower integral structure to lift and adjust its height.

[0078] Reference Figure 3 Sleeve 602 is fixedly sleeved on rotating rod 601. Sleeve 602 is preferably block-shaped and is used to support linear drive component 603 and connect rotating rod 601 with lower clamping structure.

[0079] Reference Figure 3 Linear drive component 3 603 is located at the bottom of sleeve block 1 602 and is used to drive the fixed part 8 to rise and fall. The linear drive component 3 603 is preferably, but not limited to, the model CDJ2B12-20. The advantage of this model is that it is precise in action and small in size. Its main purpose is to drive the fixed part 8 to rise and fall to adjust the height of the workpiece. It is an existing mature technology, so it will not be discussed further here.

[0080] Reference Figure 3 The second bidirectional lead screw 801 is rotatably mounted on the fixed part 8. The shape of the second bidirectional lead screw 801 is preferably a bidirectional threaded rod, which is used to drive a pair of moving plates 803 to slide towards or away from each other.

[0081] Reference Figure 3 The power unit 802 is fixedly mounted on the fixed part 8 and is used to drive the bidirectional lead screw 801 to rotate. The power unit 802 preferably uses, but is not limited to, the model 39BYGL20. The advantages of this model are low noise and moderate torque. Its main purpose is to drive the bidirectional lead screw 801 to rotate and adjust the clamping distance. It is an existing mature technology, so it will not be described in detail here.

[0082] Reference Figure 3 The movable plate 803 is threadedly connected to the bidirectional lead screw 801, and there is a pair of them. It is also horizontally slidably connected to the fixed part 8 to support the synchronous movement of the clamping element 804.

[0083] Reference Figure 6 The drive assembly includes a connecting ear 201, a slide bar 202, a two-way lead screw 203, a threaded block, a power unit 205, a transmission rod 206, and a transmission rod 207.

[0084] Reference Figure 6 The connecting ears 201 are fixedly mounted in pairs on the base 1. The shape of the connecting ears 201 is preferably ear-shaped, providing mounting support points for the slide rod 202 and the bidirectional lead screw 203.

[0085] Reference Figure 6 The slide bar 202 is fixedly mounted on the opposite sidewalls of the two connecting lugs 201. The slide bar 202 is preferably round in shape, which provides guidance for the horizontal sliding of the threaded block.

[0086] Reference Figure 6 The bidirectional lead screw 203 is rotatably mounted on the opposite sidewalls of the two connecting lugs 201. The bidirectional lead screw 203 is preferably bidirectional threaded rod in shape and is used to drive the threaded blocks to slide towards or away from each other.

[0087] Reference Figure 6 The threaded block is horizontally slidably sleeved on the slide rod 202 and threadedly connected to the double-acting screw 203, and is used to support the synchronous movement of the transmission rod 206.

[0088] Reference Figure 6 The power unit 205 is fixedly mounted on the connecting ear 201 and is used to drive the bidirectional lead screw 203 to rotate. The preferred, but not limited to, model YS6314 is preferred for the power unit 205. The advantages of this model are stable operation and convenient installation. Its main purpose is to drive the bidirectional lead screw 203 to rotate and adjust the distance between the limiting parts. It is an existing mature technology, so it will not be described in detail here.

[0089] Reference Figure 6 The transmission rod 206 is fixedly mounted on the threaded block. The transmission rod 206 is preferably plate-shaped and is used to transmit the moving power of the threaded block 204.

[0090] Reference Figure 6 The transmission rod 207 is fixedly mounted on the vertical side wall of the transmission rod 206 and is fixedly connected to the limiting part 2. It is used to drive the limiting part 2 to move synchronously with the threaded block to realize the clamping and loosening of the chassis.

[0091] The above-mentioned components work together in coordination. The specific working method and process when they work together are as follows: First, the drive assembly drives the limiting part to clamp the main body of the machine box, and the clamping element 804 clamps the workpiece to be welded. The linear drive component 302 and the electric guide rail 4 are used to adjust the position to align with the welding position. When the spline shaft 707 is inserted into the drive shaft 723, the power unit 502 can drive the workpiece and the welding part 903 to rotate synchronously. Alternatively, the power unit 716 can drive the gear plate 712 to move and adjust the pitch angle of the welding part 903 independently. When the spline shaft 707 is disengaged, the worm gear 720 and worm 722 self-lock and fix the position of the workpiece. The power unit 703 can rotate the welding part 903 independently. Then, the gear plate 712 and the spur gear 904 are used to mesh and adjust the pitch angle of the welding part 903 independently, thus completing the multi-mode welding angle adjustment.

[0092] The functional principle of this invention can be explained through the following operational methods: When using the machine, the operator first places the U-shaped chassis body on the processing area above the base 1, starts the power unit 205 to drive the bidirectional lead screw 203 to rotate, drives the threaded block 204 to slide along the slide bar 202, and drives the limiting part 2 to move closer together through the transmission rod 206 and the transmission rod 207, so that the chassis body is stably clamped in the preset position, completing the positioning and clamping process of the base workpiece, and providing a stable processing reference for subsequent welding operations.

[0093] Secondly, the starting power unit 802 drives the bidirectional lead screw 801 to rotate, which drives a pair of moving plates 803 to slide towards each other along the groove of the fixed part 8, causing the clamping element 804 to smoothly approach and clamp the plate-shaped workpiece to be welded. The linear drive unit 302 drives the slider 301 to slide horizontally along the mounting part 3, and cooperates with the electric guide rail 4 to adjust the lateral and longitudinal positions of the clamped workpiece, accurately aligning it with the corresponding welding position on the side of the machine box, and completing the pre-welding position adjustment.

[0094] When the spline shaft 707 and the drive shaft 723 are in the plugged state, the power unit 3 703 drives the connecting shaft 702 to rotate on the concave plate 701, which in turn drives the first sleeve block 602 to rotate on the rotating part 6 and the second sleeve block 704 to rotate on the connecting part 7. Both the first sleeve block 602 and the second sleeve block 704 rotate around the axis of the rotating rod 601 and the connecting shaft 702. Under the coordinated action of the fixing part 8 and the transmission part 9, the workpiece held by the clamping element 804 rotates synchronously with the welding part 903. At this time, the welding part 903 can be directly welded to the position to be welded on the workpiece. Subsequently, the gear plate 712 can be moved by the power unit 4 716, so that the welding part 903 rotates around the axis of the driven shaft 901, adjusting the pitch angle of the welding part 903 to adapt to the alignment requirements of welds with different directions. This achieves the function of simultaneously adjusting the angle between the welding part 903 and the workpiece, while also adjusting the pitch angle of the welding part 903 independently.

[0095] When it is necessary to adjust the rotation of the welding part 903 around the axis of the connecting shaft 702 independently, the linear drive component 4 705 drives the push plate 706 to move smoothly in the horizontal direction, causing the spline shaft 707 to disengage from the drive shaft 723, releasing the rotational linkage between the workpiece side and the welding side. The worm gear 720 and the worm 722 form a meshing self-locking structure, fixing the rotation angle of the sleeve block 602 and keeping the position of the plate-shaped workpiece held by the clamping element 804 unchanged. Then, starting the power unit 3 703 allows for the independent adjustment of the rotation angle of the welding part 903. After adjusting the rotation of the welding part 903 independently, when it is necessary to adjust its pitch angle, the linear drive component 4 705 continues to operate, driving the gear plate 712 to mesh with the spur gear 904, realizing the function of adjusting the pitch angle after adjusting the angle of the welding part 903 independently.

[0096] Finally, after completing the welding operations at all corresponding positions, the drive limit part, clamping element and welding part are reset, and the processed chassis workpiece can be removed. This realizes the step-by-step coordinated control of workpiece clamping and angle adjustment, taking into account the dual functions of synchronous rotation and individual angle adjustment, reducing the operation steps of manual adjustment, effectively shortening the time of pre-welding preparation and station switching, and improving the continuity of U-shaped chassis welding operations and processing adaptability.

[0097] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A special welding auxiliary fixing device for computer U-shaped chassis, comprising a base (1), characterized in that, The base (1) is provided with at least two pairs of limiting parts (2) for fixing the chassis. The base (1) is fixedly provided with an installation part (3). The installation part (3) is horizontally slidably provided with a pair of electric guide rails (4) along the length direction of the base (1). The electric guide rails (4) are provided with a connecting part (5) below. The connecting part (5) is rotatably provided with a rotating part (6) and a connecting part (7) below. The rotating part (6) is provided with a fixing part (8) below. The fixing part (8) is horizontally slidably provided with a pair of clamping elements (804) for clamping the workpiece to be welded below. The connecting part (7) is provided with a transmission part (9). The transmission part (9) is rotatably provided with a welding part (903) for welding below. The base (1) is provided with a drive assembly for driving the limiting part (2) to slide horizontally; A switching assembly is provided below the connecting part (7) to enable the fixing part (8) and the transmission part (9) to rotate synchronously.

2. The special welding auxiliary fixing device for computer U-shaped chassis according to claim 1, characterized in that, A rotating seat (501) is rotatably provided on the connecting part (5), and the connecting part (7) and the rotating seat (501) are fixedly connected. A second power unit (502) for driving the rotating seat (501) to rotate is fixedly provided on the connecting part (5), and the rotating part (6) and the bottom end of the rotating seat (501) are fixedly connected.

3. The special welding auxiliary fixing device for computer U-shaped chassis according to claim 1, characterized in that, The switching component includes plug-in components and individual components; The connector includes a connecting shaft (702), a rotating end (704), a linear drive component (705), and a spline shaft (707). The rotating end (704) rotates on the connecting part (7) and rotates coaxially with the connecting shaft (702). The linear drive (705) is fixed at one end of the connecting shaft (702), and the spline shaft (707) is fixed at the end of the linear drive (705) away from the connecting shaft (702).

4. The special welding auxiliary fixing device for computer U-shaped chassis according to claim 2, characterized in that, The connector also includes a drive shaft (723), a worm gear drive section and a bevel gear meshing section; The drive shaft (723) has a socket at one end relative to the spline shaft (707). After the drive shaft (723) rotates, it drives the worm gear transmission part, and the worm gear transmission part drives the bevel gear meshing part to rotate.

5. The special welding auxiliary fixing device for computer U-shaped chassis according to claim 1, characterized in that, The individual components include a support base (710), a toothed spur gear section, and a driven shaft (901). The support base (710) is fixedly disposed relative to the spline shaft (707). After the support base (710) moves horizontally, the gear plate spur gear meshes and drives the driven shaft (901) to rotate.

6. The special welding auxiliary fixing device for computer U-shaped chassis according to claim 4, characterized in that, The driven shaft (901) and the welded part (903) rotate coaxially.

7. The special welding auxiliary fixing device for computer U-shaped chassis according to claim 1, characterized in that, A slider (301) is horizontally slidably disposed on the mounting part (3). The same slide block (303) is fixedly disposed on the slider (301) and the electric guide rail (4). A linear drive component (302) for driving the slider (301) to slide horizontally is fixedly disposed on the mounting part (3).

8. The special welding auxiliary fixing device for computer U-shaped chassis according to claim 1, characterized in that, The electric guide rail (4) is provided with a locking block (401), and a synchronization seat (402) is fixedly provided at the bottom of the locking block (401). A linear drive component (403) is fixedly provided at the bottom of the synchronization seat (402). A guide rod (404) slides vertically through the synchronization seat (402). The same main board base (405) is fixedly provided at the bottom of the linear drive component (403) and the guide rod (404), and the connecting part (5) is fixedly provided at the bottom of the main board base (405).

9. A special welding auxiliary fixing device for a computer U-shaped chassis according to claim 1, characterized in that, A sleeve block (602) is fixedly sleeved on the rotating rod (601), and a linear drive component (603) for driving the fixed part (8) to rise and fall is provided at the bottom of the sleeve block (602). The fixing part (8) is provided with a clamping fixture for driving the two clamping elements (804) to move horizontally relative to each other to clamp the workpiece.

10. A special welding auxiliary fixing device for a computer U-shaped chassis according to claim 1, characterized in that, The drive assembly includes a connecting ear (201) and a transmission rod two (207); A pair of connecting ears (201) are fixedly mounted on the base (1), and the transmission rod (207) is fixedly mounted on the limiting part (2) and horizontally slidably mounted on the opposite side of the two connecting ears (201).

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