A fixture library automatic switching device

Abstract

The present invention discloses an automatic switching device for a fixture library, which relates to the field of three-dimensional tool libraries. It includes: a welded frame, a rolling base, and a fixture fixing mechanism. The fixture fixing mechanism is bolted to the rolling base. The fixture fixing mechanism lifts the rolling base up and down to move between empty library positions. The welded frame is in contact with the roller slide rail of the rolling base. The arrival of the welded frame at the fixed position is detected by a limit device. A pair of positioning devices on the rolling base are controlled by an electric control signal to perform positioning so that the welded frame and the rolling base are relatively fixed. The fixture fixing device lifts the rolling base up and down to the front of the production line, facilitating switching at different times. It is convenient to use, has a compact structure, realizes the full-automatic switching of side wall assembly fixtures, has strong automation, occupies a small floor area, and has high production efficiency, solving the problems of low production efficiency of the production line caused by manual intervention in switching fixtures, inability to adapt to the production of various vehicle models, and large occupation of the factory floor space, etc.

Description

Technical Field

[0001] The present invention relates to the field of three-dimensional tool libraries, and particularly to an automatic switching device for a fixture library. Background Art

[0002] With the rapid development of the automotive industry, the competition in the automotive market is becoming increasingly fierce. Whether it is traditional automotive manufacturers or emerging new energy vehicle manufacturers, they are all trying their best to accelerate the product replacement and seize the market share. Automobile manufacturers need to continuously introduce new models. The company often adopts the order form for production. However, due to the limitations of production sites and costs, usually a production line needs to meet the production of multiple models. In order to save the overall production cost and reduce the inventory, but the planning and implementation of the production line need to follow certain processes and market rules. It is obviously unrealistic to plan a new production line to produce a new model in the short term.

[0003] The maximum number of online model switches can only accommodate four models. When the side panel assembly fixtures are imported and exported, the production line needs to stop production, and it takes one day for the switch, which seriously affects the production efficiency. Most of them use the common base for the sub-assembly of car side panel fixtures, and different production models are switched by switching the sub-assemblies. However, when switching between fixtures, manual assistance is often required for switching, and there is a problem that the fixture switching time is difficult to control. The design of the automatic switching device for the fixture library is difficult, and it is difficult to share the operation equipment in a small space. Therefore, an automatic switching device for the fixture library with high reliability and strong compatibility is needed to realize the switching of fixtures. At present, there is no literature record about the automatic switching device for the fixture library. Summary of the Invention

[0004] In view of the problems existing in the prior art, the present invention creatively conceives an automatic switching device for a fixture library to realize the online automatic switching of side panel assembly fixtures, saving manpower and working hours.

[0005] The technical solution adopted to implement the present invention is as follows: A fixture library automatic switching device, characterized in that it includes: a welding frame 1, a rolling base 2, and a fixture fixing mechanism 3. Two identical fixture fixing mechanisms 3 are symmetrically arranged at the lower part of the rolling base 2. The lifting beam 3.1 of the fixture fixing mechanism 3 is threadedly connected to the lifting base 2.6 of the rolling base 2. The welding frame 1 includes: a support cross beam 1.1, a support short longitudinal beam 1.2, a support long longitudinal beam 1.3, a rolling guide rail 1.4, a positioning component 1.5, a sliding traction block 1.6, a traction plate 1.7, a sliding guide rail 1.8, a sliding lead screw 1.9, a fixed base 1.10, a slider 1.11, a servo motor 1.12, a servo motor fixing plate 1.13, a small pulley 1.14, a belt 1.15, a large pulley 1.16, and a connecting plate 1.17. The support cross beam 1.1 and the support long longitudinal beam 1.3 form a frame, and the support short longitudinal beam 1.2 is arranged inside the frame. The support cross beam 1.1, the support short longitudinal beam 1.2, and the support long longitudinal beam 1.3 are welded and connected. The rolling guide rail 1.4 is arranged on the back of the frame. The rolling guide rail 1.4 is parallel to the support short longitudinal beam 1.2 and is threadedly connected to the frame. A positioning component 1.5 is arranged at the lower part of the rolling guide rail 1.4, and the positioning component 1.5 is fixedly connected to the frame. Sliding traction blocks 1.6 are respectively arranged on two identical support long longitudinal beams 1.3, and the sliding traction blocks 1.6 are fixedly connected to the support long longitudinal beams 1.3. A connecting plate 1.17 is arranged at the lower part of the fixed base 1.10. A sliding lead screw 1.9 is arranged inside the fixed base 1.10. A sliding guide rail 1.8 is arranged at the upper part of the fixed base 1.10. A traction plate 1.7 is threadedly connected to the slider 1.11 of the sliding guide rail 1.8. A servo motor fixing plate 1.13 is arranged at the end of the fixed base 1.10. The servo motor fixing plate 1.13 is threadedly connected to the fixed base 1.10. The sliding lead screw 1.9 passes through the servo motor fixing plate 1.13, and the shaft head of the sliding lead screw 1.9 is fixedly connected to the large pulley 1.16. A servo motor 1.12 is arranged on the other side of the servo motor fixing plate 1.13. The servo motor 1.12 is threadedly connected to the servo motor fixing plate 1.13. The shaft head of the servo motor 1.12 passes through the servo motor fixing plate 1.13, and the shaft head of the servo motor 1.12 is fixedly connected to the small pulley 1.14. The small pulley 1.14 and the large pulley 1.16 are connected by a belt 1.15. The support cross beam 2.3 of the rolling base 2 is fixedly connected to the connecting plate 1.17 of the welding frame 1. The traction block 1.6 and the traction plate 1.7 are cooperatively connected. The load-bearing wheel 2.13 of the rolling base 2 is cooperatively connected to the rolling guide rail 1.4 of the welding frame 1.

[0006] Further, the traction block 1.6 includes: a traction fixing bracket 1.61, a traction fixing block 1.62, and a traction head 1.64. A groove is provided on the traction fixing bracket 1.61. The traction fixing block 1.62 is cooperatively connected with the traction head 1.64. The traction fixing block 1.62 is arranged in the groove of the traction fixing bracket 1.61, and the traction fixing block 1.62 is threadedly connected to the traction fixing bracket 1.61.

[0007] Further, the traction plate 1.7 includes: a traction plate bottom plate 1.71 and a traction groove 1.73. A groove is provided on the traction groove 1.73, and the traction plate bottom plate 1.71 is fixedly connected to the traction groove 1.73.

[0008] Further, the rolling base 2 includes: rolling pulleys 2.1, a positioning cylinder 2.2, a support cross beam 2.3, a pulley support beam 2.4, a limit block 2.5, and a lifting base 2.6. Pulley support beams 2.4 are respectively arranged at both ends of the support cross beam 2.3. The support cross beam 2.3 is welded to the pulley support beams 2.4. A set of rolling pulleys 2.1 is arranged on the outer side of the pulley support beams 2.4, and the rolling pulleys 2.1 are threadedly connected to the pulley support beams 2.4. A lifting base 2.6 is arranged at the bottom of the support cross beam 2.3, and the support cross beam 2.3 is welded to the lifting base 2.6. A limit block 2.5 is arranged on the upper part of the support cross beam 2.3, and the support cross beam 2.3 is threadedly connected to the limit block 2.5. A positioning cylinder 2.2 is arranged between the support cross beam 2.3 and the pulley support beams 2.4, and the positioning cylinder 2.2 is threadedly connected to the pulley support beams 2.4.

[0009] Further, the positioning cylinder 2.2 includes: an air pump 2.21, an air pump fixing frame 2.22, an air pipe 2.23, an air pipe adapter 2.24, a positioning iron column 2.25, a positioning cylinder protective sleeve 2.26, a positioning cylinder fixing frame 2.27, and a cylinder 2.28. The piston rod of the cylinder 2.28 is threadedly connected to the positioning iron column 2.25. A positioning cylinder protective sleeve 2.26 is arranged outside the cylinder 2.28, and the positioning cylinder protective sleeve 2.26 is threadedly connected to the cylinder 2.28. A positioning cylinder fixing frame 2.27 is arranged outside the positioning cylinder protective sleeve 2.26, and the positioning cylinder fixing frame 2.27 is threadedly connected to the positioning cylinder protective sleeve 2.26. An air pump fixing frame 2.22 is arranged on the end face of the air pump 2.21, and the air pump fixing frame 2.22 is threadedly connected to the air pump 2.21. An air pipe adapter 2.24 is arranged on the upper part of the air pump fixing frame 2.22. The air pump 2.21 is connected to the cylinder 2.28 through the air pipe 2.23, and the air pipe adapter 2.24 is arranged between the air pipes 2.23.

[0010] Furthermore, the fixture fixing mechanism 3 includes: a lifting beam 3.1, a clamping device 3.2, a tray base 3.3 and a tray 3.4. The clamping device 3.2, the tray base 3.3 and the tray 3.4 are respectively arranged at both ends of the lifting beam 3.1. The tray base 3.3 and the tray 3.4 are threadedly connected, and the lifting beam 3.1 is threadedly connected to the clamping device 3.2 and the tray 3.4 respectively.

[0011] Furthermore, the clamping device 3.2 includes: a clamping device base 3.21, a cylinder push rod 3.22, a bolt column 3.23, a fixture support plate 3.24, a clamping backing plate 3.25, a clamping gripper arm 3.26, a clamping cylinder 3.27, a cylinder bolt 3.28 and a cylinder base 3.29. The fixture support plate 3.24 is arranged on the upper part of the cylinder base 3.29, and the fixture support plate 3.24 is welded to the cylinder base 3.29. The base 3.21 is arranged on the lower part of the cylinder base 3.29, and the base 3.21 is threadedly connected to the cylinder base 3.29. The clamping cylinder 3.27 is hinged to the cylinder base 3.29 through the cylinder bolt 3.28. The piston rod of the clamping cylinder 3.27 is threadedly connected to the cylinder push rod 3.22. The clamping gripper arm 3.26 is hinged to the fixture support plate 3.24, and the clamping gripper arm 3.26 is connected to the cylinder push rod 3.22 through the bolt column 3.23. The clamping backing plate 3.25 is arranged at the front end of the clamping gripper arm 3.26, and the clamping backing plate 3.25 is threadedly connected to the clamping gripper arm 3.26.

[0012] Furthermore, the tray base 3.3 includes: a fixing plate 3.31, a limiter fixing seat 3.33, a limiter 3.34 and a fixing clamp 3.35. The limiter fixing seat 3.33 is arranged at the upper right end of the fixing plate 3.31, and the fixing plate 3.31 is fixedly connected to the limiter fixing seat 3.33. The limiter fixing seat 3.33 is connected to the limiter 3.34 in a matching manner. The fixing clamp 3.35 is arranged at the upper left end of the fixing plate 3.31, and the fixing plate 3.31 is threadedly connected to the fixing clamp 3.35. The tray 3.4 includes: a tray back plate 3.41, tray bottom plate pads 3.42 and a tray bottom plate 3.43. A set of long holes are arranged on the tray back plate 3.41, and the tray bottom plate 3.43 is threadedly connected to the long holes on the tray back plate 3.41. The tray bottom plate pads 3.42 are arranged on the tray bottom plate 3.43, and the fixing plate 3.31 is connected to the tray back plate 3.41 through screws.

[0013] The beneficial effects of the automatic fixture library switching device of the present invention are as follows:

[0014] A fixture library automatic switching device uses the method of fixture sliding to switch the position between the fixture library and the welding frame, and then realizes the switching of fixtures in the fixture library through the rolling of the rolling base, enabling the automatic and rapid replacement of multiple fixtures at the same position. Moreover, the fixture library of this structure occupies less working space, facilitating switching at different times, being convenient to use, having a compact structure, meeting the application requirements of enterprises, and having good application prospects. It realizes the full-automatic switching of side panel assembly fixtures, with strong automation, small floor area, and high production efficiency, solving problems such as low production efficiency of the production line caused by manual intervention in fixture switching, inability to adapt to the production of various vehicle models, and large occupation of factory floor space. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the three-dimensional view of a fixture library automatic switching device;

[0016] Figure 2 is Figure 1 the three-dimensional view after removing part 1;

[0017] Figure 3 is the three-dimensional view of the welding frame of a fixture library automatic switching device;

[0018] Figure 4 is the three-dimensional view of the transmission mechanism of a fixture library automatic switching device;

[0019] Figure 5 is Figure 4 the three-dimensional view of part 1.6 in [figure number];

[0020] Figure 6 is Figure 4 the three-dimensional view of part 1.7 in [figure number];

[0021] Figure 7 is Figure 1 the three-dimensional view of part 2 in [figure number];

[0022] Figure 8 is Figure 7 the three-dimensional view of part 2.1 in [figure number];

[0023] Figure 9 is Figure 7 the three-dimensional view of part 2.2 in [figure number];

[0024] Figure 10 is Figure 1 the three-dimensional view of part 3 in [figure number];

[0025] Figure 11 is Figure 10 the three-dimensional view of part 3.2 in [figure number];

[0026] Figure 12 is Figure 10 the three-dimensional view of part 3.3 in [figure number];

[0027] Figure 13 In the embodiment, it is a schematic diagram of the application of a fixture library automatic switching device in a fixture library;

[0028] In the figure: 1. Welding frame, 1.1. Support cross beam, 1.2. Support short longitudinal beam, 1.3. Support long longitudinal beam, 1.4. Rolling guide rail, 1.5. Positioning component, 1.6. Sliding traction block, 1.61. Traction fixed bracket, 1.62. Traction fixed block, 1.63. Fixed bolt, 1.64. Traction head, 1.65. Traction fixed bolt, 1.7. Traction plate, 1.71. Traction plate bottom plate, 1.72. Traction plate fixing bolt, 1.73. Traction groove, 1.8. Sliding guide rail, 1.9. Sliding lead screw, 1.10. Fixed base, 1.11. Slide block, 1.12. Servo motor 1.13. Servo motor fixing plate, 1.14. Small pulley, 1.15. Belt, 1.16. Large pulley, 1.17. Connecting plate, 2. Rolling base, 2.1. Rolling pulley, 2.11. Guide wheel, 2.12. Guide wheel support frame, 2.13. Load-bearing wheel, 2.14. Rolling pulley base, 2.15. Load-bearing wheel support frame, 2.2. Positioning cylinder, 2.21. Air pump, 2.22. Air pump fixing frame, 2.23. Air pipe, 2.24. Air pipe adapter, 2.25. Positioning iron column, 2.26. Positioning cylinder protective sleeve, 2.27. Positioning cylinder fixing frame, 2.28. Cylinder, 2.3. Support cross beam, 2.4. Pulley support beam, 2.5. Limit block, 2.6. Lifting base, 3. Fixture fixing mechanism, 3.1. Lifting beam, 3.2. Clamping device, 3.21. Clamping device base, 3.22. Cylinder push rod, 3.23. Bolt column, 3.24. Fixture support plate, 3.25. Clamping backing plate, 3.26. Clamping gripper arm, 3.27. Clamping cylinder, 3.28. Cylinder bolt, 3.29. Cylinder base, 3.3. Tray base, 3.31. Fixing plate, 3.32. Fixing bolt, 3.33. Limiter fixing seat, 3.34. Limiter, 3.35. Fixed clamp, 3.4. Tray, 3.41. Tray back plate, 3.42. Tray bottom plate spacer, 3.43. Tray bottom plate. Detailed implementation manners

[0029] The following combines the attached Figures 1 to 13 drawings and specific implementation manners to further elaborate on the present invention. To make the purpose, technical solution, and advantages of the implementation manner clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. The specific implementation manners described herein are only used to explain the present invention and are not used to limit the scope of the present invention.

[0030] As shown in the attached Figures 1 to 4As shown in the figure, a fixture library automatic switching device includes: a welding frame 1, a rolling base 2, and a fixture fixing mechanism 3. Two identical fixture fixing mechanisms 3 are symmetrically arranged at the lower part of the rolling base 2. The lifting beam 3.1 of the fixture fixing mechanism 3 is threadedly connected to the lifting base 2.6 of the rolling base 2. The welding frame 1 includes: a support cross beam 1.1, a support short longitudinal beam 1.2, a support long longitudinal beam 1.3, a rolling guide rail 1.4, a positioning component 1.5, a sliding traction block 1.6, a traction plate 1.7, a sliding guide rail 1.8, a sliding lead screw 1.9, a fixed base 1.10, a slider 1.11, a servo motor 1.12, a servo motor fixing plate 1.13, a small pulley 1.14, a belt 1.15, a large pulley 1.16, and a connecting plate 1.17. The support cross beam 1.1 and the support long longitudinal beam 1.3 form a frame, and the support short longitudinal beam 1.2 is arranged inside the frame. The support cross beam 1.1, the support short longitudinal beam 1.2, and the support long longitudinal beam 1.3 are welded together. The rolling guide rail 1.4 is arranged on the back of the frame. The rolling guide rail 1.4 is parallel to the support short longitudinal beam 1.2 and is threadedly connected to the frame. A positioning component 1.5 is arranged at the lower part of the rolling guide rail 1.4, and the positioning component 1.5 is fixedly connected to the frame. Sliding traction blocks 1.6 are respectively arranged on two identical support long longitudinal beams 1.3, and the sliding traction blocks 1.6 are fixedly connected to the support long longitudinal beams 1.3. A connecting plate 1.17 is arranged at the lower part of the fixed base 1.10. A sliding lead screw 1.9 is arranged inside the fixed base 1.10. A sliding guide rail 1.8 is arranged at the upper part of the fixed base 1.10. A traction plate 1.7 is threadedly connected to the slider 1.11 of the sliding guide rail 1.8. A servo motor fixing plate 1.13 is arranged at the end of the fixed base 1.10. The servo motor fixing plate 1.13 is threadedly connected to the fixed base 1.10. The sliding lead screw 1.9 passes through the servo motor fixing plate 1.13, and the shaft head of the sliding lead screw 1.9 is fixedly connected to the large pulley 1.16. A servo motor 1.12 is arranged on the other side of the servo motor fixing plate 1.13. The servo motor 1.12 is threadedly connected to the servo motor fixing plate 1.13. The shaft head of the servo motor 1.12 passes through the servo motor fixing plate 1.13, and the shaft head of the servo motor 1.12 is fixedly connected to the small pulley 1.14. The small pulley 1.14 and the large pulley 1.16 are connected by a belt 1.15. The support cross beam 2.3 of the rolling base 2 is fixedly connected to the connecting plate 1.17 of the welding frame 1. The traction block 1.6 and the traction plate 1.7 are cooperatively connected. The stress wheel 2.13 of the rolling base 2 is cooperatively connected to the rolling guide rail 1.4 of the welding frame 1.

[0031] As attached Figure 5As shown, the traction block 1.6 includes: a traction fixing bracket 1.61, a traction fixing block 1.62, and a traction head 1.64. A groove is provided on the traction fixing bracket 1.61. The traction fixing block 1.62 is cooperatively connected with the traction head 1.64. The traction fixing block 1.62 is arranged in the groove of the traction fixing bracket 1.61, and the traction fixing block 1.62 is threadedly connected with the traction fixing bracket 1.61.

[0032] As shown in the appendix Figure 6 As shown, the traction plate 1.7 includes: a traction plate bottom plate 1.71 and a traction groove 1.73. A groove is provided on the traction groove 1.73. The traction plate bottom plate 1.71 is fixedly connected with the traction groove 1.73.

[0033] As shown in the appendix Figures 7 to 8 As shown, the rolling base 2 includes: rolling pulleys 2.1, a positioning cylinder 2.2, a support cross beam 2.3, a pulley support beam 2.4, a limit block 2.5, and a lifting base 2.6. Pulley support beams 2.4 are respectively arranged at both ends of the support cross beam 2.3. The support cross beam 2.3 is welded to the pulley support beam 2.4. A set of rolling pulleys 2.1 is arranged on the outer side of the pulley support beam 2.4. The rolling pulleys 2.1 are threadedly connected with the pulley support beam 2.4. A lifting base 2.6 is arranged at the bottom of the support cross beam 2.3. The support cross beam 2.3 is welded to the lifting base 2.6. A limit block 2.5 is arranged on the upper part of the support cross beam 2.3. The support cross beam 2.3 is threadedly connected with the limit block 2.5. A positioning cylinder 2.2 is arranged between the support cross beam 2.3 and the pulley support beam 2.4. The positioning cylinder 2.2 is threadedly connected with the pulley support beam 2.4.

[0034] As shown in the appendix Figure 9As shown in the figure, the positioning cylinder 2.2 includes: an air pump 2.21, an air pump fixing bracket 2.22, an air pipe 2.23, an air pipe adapter 2.24, a positioning iron column 2.25, a positioning cylinder protective sleeve 2.26, a positioning cylinder fixing bracket 2.27, and a cylinder 2.28. The piston rod of the cylinder 2.28 is threadedly connected to the positioning iron column 2.25. A positioning cylinder protective sleeve 2.26 is arranged outside the cylinder 2.28, and the positioning cylinder protective sleeve 2.26 is threadedly connected to the cylinder 2.28. A positioning cylinder fixing bracket 2.27 is arranged outside the positioning cylinder protective sleeve 2.26, and the positioning cylinder fixing bracket 2.27 is threadedly connected to the positioning cylinder protective sleeve 2.26. An air pump fixing bracket 2.22 is arranged on the end face of the air pump 2.21, and the air pump fixing bracket 2.22 is threadedly connected to the air pump 2.21. An air pipe adapter 2.24 is arranged above the air pump fixing bracket 2.22. The air pump 2.21 is connected to the cylinder 2.28 through the air pipe 2.23, and the air pipe adapter 2.24 is arranged between the air pipes 2.23.

[0035] As shown in the attached Figure 10 figure, the fixture fixing mechanism 3 includes: a lifting beam 3.1, a clamping device 3.2, a tray base 3.3, and a tray 3.4. Clamping devices 3.2, a tray base 3.3, and a tray 3.4 are respectively arranged at both ends of the lifting beam 3.1. The tray base 3.3 and the tray 3.4 are threadedly connected, and the lifting beam 3.1 is respectively threadedly connected to the clamping device 3.2 and the tray 3.4.

[0036] As shown in the attached Figure 11 figure, the clamping device 3.2 includes: a clamping device base 3.21, a cylinder push rod 3.22, a bolt column 3.23, a fixture support plate 3.24, a clamping cushion plate 3.25, a clamping gripper arm 3.26, a clamping cylinder 3.27, a cylinder bolt 3.28, and a cylinder base 3.29. A fixture support plate 3.24 is arranged above the cylinder base 3.29, and the fixture support plate 3.24 is welded to the cylinder base 3.29. A base 3.21 is arranged below the cylinder base 3.29, and the base 3.21 is threadedly connected to the cylinder base 3.29. The clamping cylinder 3.27 is hinged to the cylinder base 3.29 through the cylinder bolt 3.28. The piston rod of the clamping cylinder 3.27 is threadedly connected to the cylinder push rod 3.22. The clamping gripper arm 3.26 is hinged to the fixture support plate �.24, and the clamping gripper arm 3.26 is connected to the cylinder push rod 3.22 through the bolt column 3.23. A clamping cushion plate 3.25 is arranged at the front end of the clamping gripper arm 3.26, and the clamping cushion plate 3.25 is threadedly connected to the clamping gripper arm 3.26.

[0037] As shown in the attached Figure 12As shown in the figure, the tray base 3.3 includes: a fixing plate 3.31, a limiter fixing seat 3.33, a limiter 3.34, and a fixing clamp 3.35. A limiter fixing seat 3.33 is provided at the upper right end of the fixing plate 3.31. The fixing plate 3.31 is fixedly connected to the limiter fixing seat 3.33. The limiter fixing seat 3.33 is cooperatively connected to the limiter 3.34. A fixing clamp 3.35 is provided at the upper left end of the fixing plate 3.31. The fixing plate 3.31 is threadedly connected to the fixing clamp 3.35. The tray 3.4 includes: a tray back plate 3.41, tray bottom plate pads 3.42, and a tray bottom plate 3.43. A set of long holes are provided on the tray back plate 3.41. The tray bottom plate 3.43 is threadedly connected to the long holes of the tray back plate 3.41. Tray bottom plate pads 3.42 are provided on the tray bottom plate 3.43. The fixing plate 3.31 is connected to the tray back plate 3.41 by screws.

[0038] As shown in the attached Figure 13 As shown in the figure, a fixture library automatic switching device includes a welding frame 1, a rolling base 2, and a fixture fixing mechanism 3. The fixture fixing mechanism 3 is bolted to the rolling base 2. The fixture fixing mechanism 3 lifts and moves the rolling base 2 up and down between empty library positions and then clamps and fixes it. The empty library position drive motor and the lead screw receive signals to push out the welding frame 1. The welding frame 1 contacts the roller slide rails of the rolling base 2. The welding frame 1 reaching the fixed position is detected by a limiting device. A pair of positioning devices on the rolling base are controlled by an electric control signal for positioning so that the welding frame 1 and the rolling base 2 are relatively fixed. The fixture fixing mechanism 3 releases the fixation, and the fixture fixing mechanism 3 lifts and moves the rolling base 2 up and down in front of the production line.

[0039] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An automatic fixture library switching device, characterized in that it Comprising: Welding frame (1), rolling base (2), fixture fixing mechanism (3). Two identical fixture fixing mechanisms (3) are symmetrically arranged at the lower part of the rolling base (2). The lifting beam (3.1) of the fixture fixing mechanism (3) is threadedly connected to the lifting base (2.6) of the rolling base (2). The welding frame (1) includes: support cross beam (1.1), support short longitudinal beam (1.2), support long longitudinal beam (1.3), rolling guide rail (1.4), positioning component (1.5), sliding traction block (1.6), traction plate (1.7), sliding guide rail (1.8), sliding lead screw (1.9), fixed base (1.10), slider (1.11), servo motor (1.12), servo motor fixing plate (1.13), small pulley (1.14), belt (1.15), large pulley (1.16) and connecting plate (1.17). The support cross beam (1.1) and the support long longitudinal beam (1.3) form a frame, and the support short longitudinal beam (1.2) is arranged inside the frame. The support cross beam (1.1), the support short longitudinal beam (1.2) and the support long longitudinal beam (1.3) are welded together. The rolling guide rail (1.4) is arranged on the back of the frame. The rolling guide rail (1.4) is parallel to the support short longitudinal beam (1.2) and is threadedly connected to the frame. The positioning component (1.5) is arranged at the lower part of the rolling guide rail (1.4) and is fixedly connected to the frame. The sliding traction blocks (1.6) are respectively arranged on two identical support long longitudinal beams (1.3), and the sliding traction blocks (1.6) are fixedly connected to the support long longitudinal beams (1.3). The connecting plate (1.17) is arranged at the lower part of the fixed base (1.10). The sliding lead screw (1.9) is arranged inside the fixed base (1.10). The sliding guide rail (1.8) is arranged at the upper part of the fixed base (1.10). The traction plate (1.7) is threadedly connected to the slider (1.11) of the sliding guide rail (1.8). The servo motor fixing plate (1.13) is arranged at the end of the fixed base (1.10), and the servo motor fixing plate (1.13) is threadedly connected to the fixed base (1.10). The sliding lead screw (1.9) passes through the servo motor fixing plate (1.13), and the shaft head of the sliding lead screw (1.9) is fixedly connected to the large pulley (1.16). The servo motor (1.12) is arranged on the other side of the servo motor fixing plate (1.13), and the servo motor (1.12) is threadedly connected to the servo motor fixing plate (1.13). The shaft head of the servo motor (1.12) passes through the servo motor fixing plate (1.13), and the shaft head of the servo motor (1.12) is fixedly connected to the small pulley (1.14). The small pulley (1.14) and the large pulley (1.16) are connected by the belt (1.15). The support cross beam (2.3) of the rolling base (2) is fixedly connected to the connecting plate (1.17) of the welding frame (1). The traction block (1.6) and the traction plate (1.7) Fitting connection, the force-bearing wheel (2.13) of the rolling base (2) is in fitting connection with the rolling guide rail (1.4) of the welding frame (1).

2. The automatic switching device of a fixture library according to claim 1, wherein The traction block (1.6) includes: a traction fixing bracket (1.61), a traction fixing block (1.62), and a traction head (1.64). A groove is provided on the traction fixing bracket (1.61). The traction fixing block (1.62) is cooperatively connected with the traction head (1.64). The traction fixing block (1.62) is arranged in the groove of the traction fixing bracket (1.61), and the traction fixing block (1.62) is threadedly connected to the traction fixing bracket (1.61).

3. The automatic switching device for a fixture library according to claim 1, characterized in that The traction plate (1.7) includes: a traction plate bottom plate (1.71) and a traction groove (1.73). A groove is provided on the traction groove (1.73). The traction plate bottom plate (1.71) is fixedly connected to the traction groove (1.73).

4. The automatic switching device of a fixture library according to claim 1, wherein The rolling base (2) includes: rolling pulleys (2.1), a positioning cylinder (2.2), a support cross beam (2.3), a pulley support beam (2.4), a limit block (2.5), and a lifting base (2.6). Pulley support beams (2.4) are respectively arranged at both ends of the support cross beam (2.3). The support cross beam (2.3) is welded to the pulley support beam (2.4). A set of rolling pulleys (2.1) is arranged on the outer side of the pulley support beam (2.4). The rolling pulleys (2.1) are threadedly connected to the pulley support beam (2.4). A lifting base (2.6) is arranged at the bottom of the support cross beam (2.3). The support cross beam (2.3) is welded to the lifting base (2.6). A limit block (2.5) is arranged on the upper part of the support cross beam (2.3). The support cross beam (2.3) is threadedly connected to the limit block (2.5). A positioning cylinder (2.2) is arranged between the support cross beam (2.3) and the pulley support beam (2.4). The positioning cylinder (2.2) is threadedly connected to the pulley support beam (2.4).

5. The automatic switching device for a fixture library according to claim 4, wherein The positioning cylinder (2.2) described above includes: an air pump (2.21), an air pump fixing bracket (2.22), an air pipe (2.23), an air pipe adapter (2.24), a positioning iron pillar (2.25), a positioning cylinder protective sleeve (2.26), a positioning cylinder fixing bracket (2.27), and a cylinder (2.28). The piston rod of the cylinder (2.28) is threadedly connected to the positioning iron pillar (2.25). A positioning cylinder protective sleeve (2.26) is provided outside the cylinder (2.28), and the positioning cylinder protective sleeve (2.26) is threadedly connected to the cylinder (2.28). A positioning cylinder fixing bracket (2.27) is provided outside the positioning cylinder protective sleeve (2.26), and the positioning cylinder fixing bracket (2.27) is threadedly connected to the positioning cylinder protective sleeve (2.26). An air pump fixing bracket (2.22) is provided on the end face of the air pump (2.21), and the air pump fixing bracket (2.22) is threadedly connected to the air pump (2.21). An air pipe adapter (2.24) is provided on the upper part of the air pump fixing bracket (2.22). The air pump (2.21) is connected to the cylinder (2.28) through the air pipe (2.23), and an air pipe adapter (2.24) is provided between the air pipes (2.23).

6. The automatic switching device for a fixture library according to claim 1, characterized in that, The fixture fixing mechanism (3) described above includes: a lifting beam (3.1), a clamping device (3.2), a tray base (3.3), and a tray (3.4). Clamping devices (3.2), tray bases (3.3), and trays (3.4) are respectively provided at both ends of the lifting beam (3.1). The tray base (3.3) and the tray (3.4) are threadedly connected. The lifting beam (3.1) is respectively threadedly connected to the clamping device (3.2) and the tray (3.4).

7. The automatic switching device for a fixture library according to claim 6, characterized in that, The clamping device (3.2) includes: a clamping device base (3.21), a cylinder push rod (3.22), a bolt column (3.23), a fixture support plate (3.24), a clamping pad (3.25), a clamping gripper arm (3.26), a clamping cylinder (3.27), a cylinder bolt (3.28), and a cylinder base (3.29). A fixture support plate (3.24) is provided on the upper part of the cylinder base (3.29), and the fixture support plate (3.24) is welded to the cylinder base (3.29). A base (3.21) is provided on the lower part of the cylinder base (3.29), and the base (3.21) is threadedly connected to the cylinder base (3.29). The clamping cylinder (3.27) is hinged to the cylinder base (3.29) through the cylinder bolt (3.28). The piston rod of the clamping cylinder (3.27) is threadedly connected to the cylinder push rod (3.22). The clamping gripper arm (3.26) is hinged to the fixture support plate (3.24). The clamping gripper arm (3.26) is connected to the cylinder push rod (3.22) through the bolt column (3.23). A clamping pad (3.25) is provided at the front end of the clamping gripper arm (3.26), and the clamping pad (3.25) is threadedly connected to the clamping gripper arm (3.26).

8. The automatic switching device of a fixture library according to claim 6, characterized in that, The described tray base (3.3) includes: a fixing plate (3.31), a limiter fixing seat (3.33), a limiter (3.34), and a fixing clip (3.35). A limiter fixing seat (3.33) is provided at the upper right end of the fixing plate (3.31). The fixing plate (3.31) is fixedly connected to the limiter fixing seat (3.33). The limiter fixing seat (3.33) is connected to the limiter (3.34) in a mating manner. A fixing clip (3.35) is provided at the upper left end of the fixing plate (3.31). The fixing plate (3.31) is threadedly connected to the fixing clip (3.35). The described tray (3.4) includes: a tray back plate (3.41), tray bottom plate pads (3.42), and a tray bottom plate (3.43). A set of long holes are provided on the tray back plate (3.41). The tray bottom plate (3.43) is threadedly connected to the long holes of the tray back plate (3.41). Tray bottom plate pads (3.42) are provided on the tray bottom plate (3.43). The fixing plate (3.31) is connected to the tray back plate (3.41) by screws.

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