A fixing fixture with a central structure for preparing a lamp

Abstract

The present invention relates to the technical field of lamp fixing fixtures, and mainly mentions a fixing fixture with a centering structure for preparing lamps. It includes a base, the base is fixedly connected to a fixed shell, the fixed shell is fixedly connected to a connecting piece, the connecting piece is rotatably connected to a rotating shell, the top of the rotating shell is fixedly connected to a connecting shell, the connecting shell is fixedly connected to a supporting ring through a mounting plate, the supporting ring is installed with supporting columns with circumferentially equal spacing, the rotating shell is fixedly connected to a fixed slide rail with circumferentially equal spacing, the fixed slide rail is slidably connected to a sliding piece, the sliding piece is rotatably connected to a rotating shaft, the rotating shaft is fixedly connected to an extrusion column, the rotating shaft is fixedly connected to a mounting plate, and a torsion spring is fixedly connected between the mounting plate of the rotating shaft and the adjacent sliding piece. The present invention utilizes the synchronous pushing of the extrusion column to move the central axis of the lampshade toward the central axis of the support ring, thereby ensuring the stability of the lampshade during the rotational painting process and improving the uniformity of the lampshade painting.

Description

Technical Field

[0001] The invention belongs to the technical field of lamp fixing fixtures and discloses a fixing fixture with a centering structure for preparing a lamp. Background Art

[0002] The lamp preparation process includes painting the lampshade. Using a spray gun to spray a layer of paint on the surface of the lampshade can not only extend the service life of the lampshade, but also make the lampshade show different colors, providing customers with more choices.

[0003] When spraying paint on a lampshade, a rotatable fixing fixture is used to fix the lampshade. During spraying, the fixing fixture is rotated to rotate the lampshade so as to achieve uniform spraying. The existing fixing fixture generally uses a limit slot and a limit plate to support the lampshade. Since the existing fixing fixture only supports the lampshade, if the lampshade is not placed stably, the lampshade will rotate unstably due to the non-centering position when the fixing fixture drives the lampshade to rotate, which affects the uniformity of painting the lampshade. Summary of the invention

[0004] In order to overcome the shortcomings of the existing lampshade fixture, the present invention provides a fixing fixture with a centering structure for preparing a lamp.

[0005] The technical solution of the present invention is: a fixing fixture with a central structure for preparing a lamp, comprising a base, the base is fixedly connected to a fixed shell, a connecting piece is fixedly connected to one side of the fixed shell, the connecting piece is rotatably connected to a rotating shell on a side away from the fixed shell, the top of the rotating shell is fixedly connected to a connecting shell, the rotating shell is communicated with the connecting shell, the connecting shell is fixedly connected to a supporting ring through a mounting plate, the central axis of the supporting ring coincides with the central axis of the rotating shell, the supporting ring is installed with supporting columns with circumferentially equal spacing, the rotating shell is fixedly connected to a fixed slide rail with circumferentially equal spacing, the fixed slide rail is slidably connected to a sliding piece, the sliding piece is rotatably connected to a rotating shaft, the rotating shaft is fixedly connected to an extrusion column, one end of the rotating shaft is fixedly connected to a mounting plate, a torsion spring is fixedly connected between the mounting plate of the rotating shaft and the adjacent sliding piece, and a transmission assembly is arranged in the middle of the rotating shell, the transmission assembly is used to control the synchronous movement of the sliding pieces with circumferentially equal spacing.

[0006] Furthermore, the torsion force of the torsion spring is greater than the resistance encountered by the lampshade when moving along the support column, thereby ensuring that the extrusion column drives the lampshade to maintain a vertical state.

[0007] Furthermore, the transmission assembly includes a sliding ring, which is slidably connected to the rotating shell, and a hinged rod is hinged between the sliding ring and the sliding parts with equal circumferential spacing. The rotating shell is fixedly connected to a limit ring, and the limit ring is limitedly matched with the sliding ring. The rotating shell is sleeved with a connecting ring, and the connecting ring is rotatably connected to the rotating ring on the side away from the sliding ring. The base is fixedly connected to a first push rod, and the telescopic end of the first push rod is fixedly connected to the rotating ring. A symmetrical pressure stabilizing component is arranged between the connecting ring and the sliding ring, and the pressure stabilizing component is used to ensure that the extrusion forces between the extrusion columns and the lampshade with equal circumferential spacing are the same.

[0008] Furthermore, the pressure stabilizing component includes a first fixed tube, the first fixed tube is fixedly connected to the sliding ring, the first fixed tube is slidably and sealingly connected to a piston rod, the piston rod is fixedly connected to the connecting ring, the first fixed tube is fixedly connected to an oil storage shell through a mounting plate, the oil storage shell and the adjacent first fixed tube are connected by a first connecting tube and a second connecting tube, and the first fixed tube is filled with hydraulic oil.

[0009] Furthermore, the first connecting pipe is installed with a one-way valve, the second connecting pipe is installed with a pressure valve, and the hydraulic oil in the oil storage shell can only flow along the first connecting pipe into the first fixed pipe.

[0010] Furthermore, an adaptive support mechanism is also included, which is arranged between the connecting shell and the supporting ring, and is used to adapt to lampshades with different curvatures. The adaptive support mechanism includes an extrusion ring, which is rotatably connected to the supporting ring, and the support columns with circumferentially equal spacing are all slidably matched with the supporting ring, the extrusion ring is provided with arc-shaped through holes with circumferentially equal spacing, and the support columns penetrate through the arc-shaped through holes adjacent to the extrusion ring, and the support columns with circumferentially equal spacing are all extrusion-matched with the extrusion ring, one side of the support ring is fixedly connected to a drive motor, and the side of the support ring close to the drive motor is fixedly connected to an arc-shaped rack, and the main shaft of the drive motor is fixedly connected to a gear meshing with the arc-shaped rack, and the mounting plate between the connecting shell and the supporting ring is fixedly connected to a fixing ring through an L-shaped plate, and the support columns with circumferentially equal spacing are all slidably connected to the fixing ring, and the bottom end of the support column is fixedly connected to a mounting plate, and a first elastic member is fixedly connected between the mounting plate of the support column and the fixing ring.

[0011] Furthermore, a negative pressure fixing mechanism is also included, which is arranged on the top of the connecting shell, and is used to fix the lampshade. The negative pressure fixing mechanism includes a suction cup, which is fixed to the connecting shell, and the suction cup and the connecting shell cooperate to form a cavity. The suction cup is provided with a through hole, and the through hole of the suction cup is connected to the cavity. The base is fixed with a second push rod, and the second push rod is located in the fixed shell and the rotating shell. The rotating shell is slidably and sealingly connected to a first piston, and the telescopic end of the second push rod is rotatably connected to the first piston. A negative pressure adjustment component is provided between the connecting shell and the extrusion columns with equal circumferential spacing, and the negative pressure adjustment component is used to adjust the state of the extrusion columns with equal circumferential spacing.

[0012] Furthermore, the suction cup is provided with two layers of annular soft rubber sheets, and the suction cup is used to adsorb the lampshade.

[0013] Furthermore, the negative pressure regulating assembly includes second fixed tubes with circumferentially equal spacing, the second fixed tubes with circumferentially equal spacing are all embedded in the connecting shell, the second fixed tubes are connected to the cavity between the suction cup and the connecting shell, a second elastic member is arranged in the second fixed tube, the second fixed tube is slidably and sealingly connected to a second piston, the two ends of the second elastic member are respectively fixedly connected to the adjacent second piston and the adjacent second fixed tube, an indicator ring is fixedly connected to the outer side of the second fixed tube, a rotating wheel is fixedly connected to the rotating shaft, a pull rope is fixedly connected between the rotating wheel and the adjacent second piston, and the pull rope runs through the adjacent second fixed tube.

[0014] Furthermore, the sliding member is fixedly connected to a sealing shell, the sealing shell is fixedly connected to a symmetrical rubber plate, and the sealing shell and the symmetrical rubber plate thereon are used to shield the adjacent extrusion columns.

[0015] The beneficial effects of the present invention are: 1. The present invention utilizes the extrusion column to synchronously push the lampshade, so that the central axis of the lampshade moves toward the central axis of the support ring until the central axis of the lampshade coincides with the central axis of the support ring, thereby ensuring the stability of the lampshade during the rotational painting process and improving the uniformity of the lampshade painting.

[0016] 2. The piston rod and the first fixed tube cooperate with each other to ensure that the four extrusion columns exert the same extrusion force on the outer ring of the lampshade, so that the device maintains the same extrusion force on lampshades of different diameters.

[0017] 3. The present invention utilizes the side walls of the arc-shaped through holes on the extrusion ring to squeeze the adjacent support columns, thereby locking the support columns, improving the stability of the lampshade placed on the support columns, and thus improving the effect of spraying the lampshade.

[0018] 4. The present invention forms negative pressure by using the cavity between two layers of annular soft rubber sheets and the lampshade, and the suction cup absorbs and fixes the lampshade through the negative pressure. The lampshade is fixed by the suction cup, thereby improving the stability of the lampshade during the rotation spraying process.

[0019] 5. The present invention protects adjacent extrusion columns by means of a closed shell to prevent paint from being sprayed on the four extrusion columns, which would cause the diameters of the four extrusion columns to change, thereby reducing the centering effect of the four extrusion columns on the lampshade. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a three-dimensional structural schematic diagram of the connecting piece and the rotating shell and other parts of the present invention;

[0022] Figure 3 It is a three-dimensional structural schematic diagram of the fixed slide rail, slide ring and other parts of the present invention;

[0023] Figure 4 It is a three-dimensional structural schematic diagram of the sliding part, the extrusion column and other parts of the present invention;

[0024] Figure 5 It is a three-dimensional structural schematic diagram of the rotating wheel, the pull rope and other parts of the present invention;

[0025] Figure 6 It is a side view stereoscopic structural diagram of the rotating shaft, torsion spring and other parts of the present invention;

[0026] Figure 7 It is a three-dimensional structural schematic diagram of the hinge rod, the first fixed tube and other parts of the present invention;

[0027] Figure 8 It is a three-dimensional structural schematic diagram of the first fixed pipe and the oil storage shell and other parts of the present invention;

[0028] Fig. 9 is a schematic diagram of a cross-sectional three-dimensional structure of a first fixed tube of the present invention;

[0029] Fig.10 It is a schematic diagram of the cross-sectional three-dimensional structure of the support ring, the extrusion ring and the fixing ring of the present invention;

[0030] Fig.11 It is a schematic diagram of the cross-sectional three-dimensional structure of the rotating shell and the suction cup of the present invention;

[0031] Fig.12 It is a schematic diagram of the cross-sectional three-dimensional structure of the second fixing tube and the indicator ring of the present invention.

[0032] Markings in the attached drawings: 1: base, 2: fixed shell, 3: connecting member, 4: rotating shell, 5: connecting shell, 6: supporting ring, 7: supporting column, 8: fixed slide rail, 9: sliding member, 10: rotating shaft, 11: extrusion column, 12: torsion spring, 13: sliding ring, 14: hinged rod, 15: limiting ring, 16: connecting ring, 17: rotating ring, 18: first push rod, 19: first fixed tube, 20: piston rod, 21: oil storage Shell, 22: first connecting tube, 23: second connecting tube, 24: closed shell, 25: rubber plate, 26: extrusion ring, 27: driving motor, 28: arc rack, 29: gear, 30: fixing ring, 31: first elastic member, 32: suction cup, 33: second push rod, 34: first piston, 35: second fixing tube, 36: second elastic member, 37: second piston, 38: indicator ring, 39: rotating wheel, 40: pull rope. DETAILED DESCRIPTION

[0033] The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which currently preferred embodiments of the present invention are shown. However, the present invention can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness, and these embodiments fully convey the scope of the present invention to the skilled person.

[0034] Research has found that during the painting process of lamps, it is usually necessary to drive the lampshade to rotate circumferentially so that the lampshade can be painted evenly. However, the existing lampshade fixing fixture generally only plays a supporting role and it is difficult to ensure that the lampshade is in a centered state, causing the lampshade to be unstable when rotating, resulting in reduced painting effect. The following real-time method is used to center the lampshade.

[0035] Embodiment 1: A fixing fixture with a central structure for preparing a lamp, such as Figure 1-Figure 6As shown, it includes a base 1, a fixed shell 2 is fixedly connected to the central part of the upper side of the base 1, a connecting member 3 is fixedly connected to the fixed shell 2, a rotating shell 4 is rotatably connected to the upper part of the connecting member 3, the rotating shell 4 rotates along the connecting member 3 to drive the lampshade to rotate circumferentially, a connecting shell 5 is fixedly connected to the top of the rotating shell 4, the rotating shell 4 is communicated with the connecting shell 5, the connecting shell 5 is fixedly connected to a supporting ring 6 through a mounting plate, the central axis of the supporting ring 6 coincides with the central axis of the rotating shell 4, the supporting ring 6 is installed with nine supporting columns 7 with equal circumferential spacing, the nine supporting columns 7 are used to support the lampshade, the rotating shell 4 is fixedly connected to four fixed slide rails 8 with equal circumferential spacing, the fixed slide rails 8 are slidably connected to a sliding member 9, The fixed slide rail 8 is used to guide the adjacent sliding members 9. The sliding members 9 are rotatably connected to a rotating shaft 10. The rotating shaft 10 is fixedly connected to an extrusion column 11. The four extrusion columns 11 move synchronously close to each other to center the lampshade so that the central axis of the lampshade coincides with the central axis of the support ring 6. One end of the rotating shaft 10 is fixedly connected to a mounting plate. A torsion spring 12 is fixedly connected between the mounting plate of the rotating shaft 10 and the adjacent sliding members 9. The torsion of the torsion spring 12 is greater than the resistance encountered by the lampshade when moving along the support column 7, thereby ensuring that the extrusion column 11 drives the lampshade to remain in a vertical state. A transmission assembly is provided in the middle of the rotating shell 4, and the transmission assembly is used to control the synchronous movement of the four sliding members 9.

[0036] like Figure 2 , Figure 7 and Figure 8 As shown, the transmission assembly includes a sliding ring 13, which is slidably connected to the rotating shell 4, and a hinge rod 14 is hinged between the sliding ring 13 and the four sliding members 9. The rotating shell 4 is fixedly connected to a limit ring 15, and the limit ring 15 is limitedly matched with the sliding ring 13. The limit ring 15 is used to limit the upward movement distance of the sliding ring 13. The rotating shell 4 is sleeved with a connecting ring 16, and the central axis of the connecting ring 16 coincides with the central axis of the rotating shell 4. The lower side of the connecting ring 16 is rotatably connected to a rotating ring 17. The base 1 is fixedly connected to a first push rod 18, and the first push rod 18 is electrically connected to the controller. The telescopic end of the first push rod 18 is fixedly connected to the rotating ring 17, and the telescopic end of the first push rod 18 drives the connecting ring 16 to move up and down synchronously through the rotating ring 17. Two symmetrical groups of pressure stabilizing components are arranged between the connecting ring 16 and the sliding ring 13, and the pressure stabilizing components are used to ensure that the extrusion forces between the extrusion columns 11 and the lampshade with circumferentially equal spacing are the same.

[0037] like Figure 8 and Fig. 9As shown, the pressure stabilizing component includes a first fixed tube 19, the first fixed tube 19 is fixedly connected to the sliding ring 13, the first fixed tube 19 is slidably and sealedly connected to the piston rod 20, the lower end of the piston rod 20 is fixedly connected to the connecting ring 16, under the cooperation of the piston rod 20 and the adjacent first fixed tube 19, the connecting ring 16 drives the sliding ring 13 to slide along the rotating shell 4, the first fixed tube 19 is fixedly connected to the oil storage shell 21 through the mounting plate, and the oil storage shell 21 is provided with a vent hole for ensuring that the hydraulic oil smoothly enters the oil storage shell 21, and the oil storage A first connecting pipe 22 and a second connecting pipe 23 are connected between the shell 21 and the adjacent first fixed pipe 19. Hydraulic oil is filled in the first fixed pipe 19. A one-way valve is installed in the first connecting pipe 22 and a pressure valve is installed in the second connecting pipe 23. When the hydraulic oil pressure in the first fixed pipe 19 exceeds the opening pressure of the pressure valve on the second connecting pipe 23, the hydraulic oil in the first fixed pipe 19 flows along the second connecting pipe 23 into the adjacent oil storage shell 21, and the hydraulic oil in the oil storage shell 21 can only flow along the first connecting pipe 22 into the first fixed pipe 19.

[0038] When spraying paint on the lampshade, the staff places the lampshade on the upper ends of the nine support columns 7, and then the staff presses the start button of the controller, and then the control box starts the two first push rods 18, and the telescopic ends of the two first push rods 18 pull the rotating ring 17 downward, and the rotating ring 17 drives the connecting ring 16 to move downward synchronously, and the connecting ring 16 pulls the piston rod 20 downward. Since a pressure valve is installed on the second connecting pipe 23, when the piston rod 20 is pulled downward, the piston rod 20 does not move downward along the adjacent first fixed pipe 19, and the hydraulic oil in the first fixed pipe 19 also does not flow. When the piston rod 20 moves downward, the hydraulic oil drives the adjacent first fixed pipe 19 Moving downward synchronously, the two first fixed tubes 19 drive the sliding ring 13 to slide downward along the rotating shell 4, the sliding ring 13 pulls the four hinged rods 14 downward, the inner ends of the four hinged rods 14 move downward, the hinged rods 14 pull the adjacent sliding members 9 to slide along the adjacent fixed slide rails 8, the sliding members 9 drive the rotating shaft 10 and the extrusion columns 11 thereon to move, the four extrusion columns 11 move closer to each other, at this time the four extrusion columns 11 push and squeeze the outer ring of the lampshade, under the synchronous push of the four extrusion columns 11, the central axis of the lampshade moves toward the central axis of the support ring 6 until the central axis of the lampshade coincides with the central axis of the support ring 6, and the lampshade moves toward the center between the nine support columns 7.

[0039] After the central axis of the lampshade coincides with the central axis of the support ring 6, the four extrusion columns 11 exert the same extrusion pressure on the outer ring of the lampshade. Similarly, the telescopic end of the first push rod 18 continues to drive the rotating ring 17 and the connecting ring 16 to move downward. When the extrusion pressure of the four extrusion columns 11 on the outer ring of the lampshade is greater than the pressure relief pressure of the pressure valve on the second connecting pipe 23, the connecting ring 16 drives the two piston rods 20 to move downward. At this time, the sliding ring 13 and the two first fixed pipes 19 are in a stationary state, and the piston rod 20 squeezes the hydraulic oil in the adjacent first fixed pipe 19. The hydraulic oil in the first fixed pipe 19 passes through the second connecting pipe 2 3 flows into the adjacent oil storage shell 21, and the piston rod 20 and the first fixed tube 19 cooperate with each other to ensure that the four extrusion columns 11 have the same extrusion force on the outer ring of the lampshade, so that the device maintains the same extrusion force on lampshades of different diameters. When the telescopic end of the first push rod 18 is fully retracted, the controller then closes the first push rod 18, and the staff uses a spray gun to paint the lampshade. At the same time, the staff drives the rotating shell 4 to rotate, and the rotating shell 4 and the lampshade and all parts thereon rotate along the connecting piece 3. The spray gun evenly sprays the lampshade, and at the same time, the rotating ring 17 rotates along the connecting ring 16.

[0040] After the lampshade is sprayed, the staff presses the closing button of the controller again, and then the controller starts the first push rod 18, and the telescopic end of the first push rod 18 begins to extend upward, and the telescopic end of the first push rod 18 drives the connecting ring 16 and the rotating ring 17 to move upward, and the connecting ring 16 drives the two piston rods 20 to move upward. During the upward movement of the piston rod 20, the hydraulic oil in the oil storage shell 21 does not flow into the adjacent first fixed tube 19 through the first connecting tube 22, and the piston rod 20 drives the adjacent first fixed tube 19 to move upward, and the two first fixed tubes 19 drive the sliding ring 13 to slide upward along the rotating shell 4. During the upward sliding of the sliding ring 13, the sliding ring 13 drives the inner ends of the four articulated rods 14 to move upward, and the outer ends of the four articulated rods 14 respectively drive the adjacent sliding members 9 to move, and the four sliding members 9 are respectively The first push rod 18 is moved upwards along the first connecting pipe 22, and the second ...

[0041] Since the diameter and curvature of the lampshade are usually divided into different models, when the model of the lampshade changes, the method of replacing the supporting fixture is adopted, which is very inconvenient. The following implementation method is adopted to overcome the above problem.

[0042] Embodiment 2: Based on embodiment 1, Figure 3 and Fig.10 As shown, it also includes an adaptive support mechanism, which is arranged between the connecting shell 5 and the support ring 6. The adaptive support mechanism is used to adapt to lampshades of different curvatures. The adaptive support mechanism includes an extrusion ring 26, which is rotatably connected to the lower side of the support ring 6. The nine support columns 7 are all slidably matched with the support ring 6. The central axis of the extrusion ring 26 coincides with the central axis of the support ring 6. The extrusion ring 26 is provided with nine arc-shaped through holes with equal circumferential spacing. The support columns 7 pass through the adjacent arc-shaped through holes of the extrusion ring 26. The nine support columns 7 are all extrusion-matched with the extrusion ring 26. The side walls of the arc-shaped through holes on the extrusion ring 26 are used to fix the adjacent support columns 7. The right side of the support ring 6 is fixedly connected with the drive motor 2 through the mounting frame. 7, the driving motor 27 is electrically connected to the controller, an arc-shaped rack 28 is fixedly connected to the right side of the support ring 6, and a gear 29 meshing with the arc-shaped rack 28 is fixedly connected to the main shaft of the driving motor 27, and the gear 29 drives the arc-shaped rack 28 to move, so that the extrusion ring 26 rotates along the support ring 6 to fix the nine support columns 7, so that the nine support columns 7 are suitable for lampshades with different curvatures, and the mounting plate between the connecting shell 5 and the support ring 6 is fixedly connected with a fixing ring 30 through an L-shaped plate, and the nine support columns 7 are all slidably connected with the fixing ring 30, and the bottom end of the support column 7 is fixedly connected with a mounting plate, and a first elastic member 31 is fixedly connected between the mounting plate of the support column 7 and the fixing ring 30, and the first elastic member 31 is configured as a tension spring, and the first elastic member 31 is sleeved on the adjacent support column 7.

[0043] After the staff puts the lampshade on the nine support columns 7, the support columns 7 slide downward along the support ring 6 under the action of the gravity of the lampshade, and the first elastic members 31 at the lower ends of the nine support columns 7 are stretched. The heights of the nine support columns 7 are uneven so as to adapt to the curved surface of the lampshade. In the process of the four extrusion columns 11 driving the lampshade to the center, the upper ends of the nine support columns 7 are always in contact with the lampshade, and when the nine support columns 7 are in contact with different positions of the lampshade, the support columns 7 will change adaptively. The central axis coincides with the central axis of the support ring 6, and after the first push rod 18 is closed, the controller starts the drive motor 27, the main shaft of the drive motor 27 drives the gear 29 to rotate, the gear 29 drives the arc rack 28 to rotate counterclockwise, and the arc rack 28 drives the extrusion ring 26 to rotate counterclockwise along the support ring 6, and the side wall of the arc-shaped through hole of the extrusion ring 26 is squeezed to the adjacent support column 7, thereby locking the support column 7, improving the stability of the lampshade on the nine support columns 7, thereby improving the spraying effect of the lampshade.

[0044] When the lampshade is sprayed, when the controller closes the first push rod 18, the controller then controls the drive motor 27, and the main shaft of the drive motor 27 drives the gear 29 to rotate in the opposite direction, and the gear 29 drives the arc rack 28 to rotate clockwise, and the arc rack 28 drives the extrusion ring 26 to rotate clockwise, and the arc-shaped through-hole side wall of the extrusion ring 26 releases the extrusion of the adjacent support columns 7. At the same time, the controller turns off the drive motor 27. When the staff removes the lampshade from the nine support columns 7, the nine support columns 7 are reset under the pulling force of the first elastic member 31.

[0045] It is found that the existing lampshade fixing fixture only supports the lampshade. When the lampshade is a curved surface, it is difficult to effectively fix the lampshade, causing the lampshade to rotate unstably during the painting process. The following real-time method is adopted to overcome the above problem.

[0046] Embodiment 3: Based on embodiment 2, Figure 2 and Fig.11 As shown, it also includes a negative pressure fixing mechanism, which is arranged on the top of the connecting shell 5, and is used to fix the lampshade. The negative pressure fixing mechanism includes a suction cup 32, which is fixed to the connecting shell 5, and the suction cup 32 is provided with two layers of annular soft rubber sheets. The suction cup 32 is used to adsorb the lampshade, and the suction cup 32 cooperates with the connecting shell 5 to form a cavity. The suction cup 32 is provided with a through hole, and the through hole of the suction cup 32 is connected to the cavity between the suction cup 32 and the connecting shell 5, and the through hole of the suction cup 32 and the connecting shell 5 formed between the lower side The cavity is connected, and the base 1 is fixedly connected with a second push rod 33, which is electrically connected to the controller. The second push rod 33 is located in the fixed shell 2 and the rotating shell 4, and the rotating shell 4 is slidably and sealingly connected with the first piston 34. A sealing ring is installed on the outer side of the first piston 34 to increase the sealing between the first piston 34 and the rotating shell 4. The telescopic end of the second push rod 33 is rotatably connected to the first piston 34. A negative pressure regulating component is arranged between the connecting shell 5 and the four extrusion columns 11, and the negative pressure regulating component is used to adjust the state of the extrusion columns 11 with equal circumferential spacing.

[0047] like Figure 4 , Figure 5 and Fig.12As shown, the negative pressure regulating assembly includes four second fixed tubes 35 with equal circumferential spacing, the four second fixed tubes 35 are all embedded in the connecting shell 5, the second fixed tube 35 is connected to the cavity between the suction cup 32 and the connecting shell 5, a second elastic member 36 is arranged in the second fixed tube 35, the second elastic member 36 is arranged as a spring, the second fixed tube 35 is slidably and sealingly connected with a second piston 37, a sealing ring is arranged on the outer side of the second piston 37, which is used to increase the sealing between the second piston 37 and the inner wall of the adjacent second fixed tube 35, the upper and lower ends of the second elastic member 36 are respectively fixedly connected to the adjacent second piston 37 and the adjacent second fixed tube 35, and an indicator ring 38 is fixedly connected to the outer side of the second fixed tube 35, and the indicator ring 38 is An ordinary circular ring, a rotating shaft 10 is fixedly connected to a rotating wheel 39, a pull rope 40 is fixedly connected between the rotating wheel 39 and the adjacent second piston 37, a fixed slide rail 8 is installed with a guide wheel, the pull rope 40 is wound around the adjacent guide wheel, the pull rope 40 runs through the adjacent second fixed tube 35, the second piston 37 is used to pull the adjacent pull rope 40, the pull rope 40 pulls the adjacent rotating wheel 39, the rotating wheel 39 drives the rotating shaft 10 and the extrusion column 11 thereon to rotate, the sliding member 9 is fixedly connected to a closing shell 24, the closing shell 24 is fixedly connected to a symmetrical rubber plate 25, the closing shell 24 and the symmetrical rubber plate 25 thereon are used to shield the adjacent extrusion column 11, reduce the adhesion of paint to the extrusion column 11, and avoid changes in the diameter of the extrusion column 11.

[0048] After the staff places the lampshade on the nine supporting columns 7, the lower side of the lampshade is squeezed on the upper side of the suction cup 32, and the suction cup 32 is deformed and fits against the lower side of the lampshade. After the nine supporting columns 7 are locked by the extrusion ring 26, the controller starts the second push rod 33, and the telescopic end of the second push rod 33 drives the first piston 34 to move downward, and the first piston 34 slides downward along the rotating shell 4. When the rotating shell 4 moves downward, the air in the cavity between the suction cup 32 and the connecting shell 5 is extracted. In the current state, the two layers of annular soft rubber sheets of the suction cup 32 are both fitted against the lower side of the lampshade, and a cavity is formed between the two layers of annular soft rubber sheets and the lampshade. When the first piston 34 moves downward, negative pressure is also formed in the cavity between the two layers of annular soft rubber sheets and the lampshade. The suction cup 32 adsorbs and fixes the lampshade through the negative pressure, and the lampshade is fixed by the suction cup 32, thereby improving the stability of the lampshade during the rotation spraying process.

[0049] After the suction cup 32 fixes the lampshade, the first piston 34 continues to move downward. In the initial state, the second elastic member 36 is in a stretched state. When the four sliding members 9 slide along the adjacent fixed slide rails 8, the four second elastic members 36 respectively drive the adjacent second pistons 37 to slide upward. The four pull ropes 40 are all in a taut state. As the first piston 34 moves downward, a negative pressure is formed in the cavity between the connecting shell 5 and the suction cup 32. At this time, under the action of the negative pressure, the second piston 37 continues to move upward. When the second piston 37 moves to the indicator ring 38, the second elastic member 36 returns to its initial length. As the second piston 37 continues to move upward along the adjacent second fixed tube 35, the second elastic member 36 begins to be compressed. The second piston 37 Pull the adjacent pull rope 40 upward, the pull rope 40 pulls the adjacent rotating wheel 39 to rotate, the rotating wheel 39 drives the adjacent rotating shaft 10 to rotate, the rotating shaft 10 drives the extrusion column 11 thereon to swing downward along the adjacent sliding member 9, the four extrusion columns 11 lose contact with the edge of the lampshade at the same time, and the four torsion springs 12 are tightened at the same time, in the process of the extrusion column 11 swinging downward, the extrusion column 11 squeezes the two adjacent rubber plates 25 and enters the adjacent closed shell 24, and the two adjacent rubber plates 25 return to their original position, the extrusion column 11 is protected in the adjacent closed shell 24 to prevent paint from being sprayed on the four extrusion columns 11, resulting in changes in the diameters of the four extrusion columns 11, thereby reducing the centering effect of the four extrusion columns 11 on the lampshade.

[0050] After the lampshade is painted, the controller restarts the first push rod 18, the second push rod 33 and the drive motor 27, and the first piston 34 begins to move upward and reset. Subsequently, under the elastic force of the second elastic member 36, the second elastic member 36 pushes the adjacent second piston 37 to move downward and reset. At the same time, the connecting ring 16 slides upward and resets, and the four sliding members 9 slide away from each other at the same time. At this time, while the sliding member 9 is driving the extrusion columns 11 thereon to move away from each other, the extrusion columns 11 simultaneously swing upward and reset along the adjacent sliding members 9. When the second piston 37 moves to the lowest part of the adjacent second fixed tube 35, the second elastic member 36 and the torsion spring 12 are both reset.

[0051] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fixing fixture with a central structure for preparing a lamp, comprising a base (1), the base (1) being fixedly connected to a fixing shell (2), one side of the fixing shell (2) being fixedly connected to a connecting piece (3), and a side of the connecting piece (3) away from the fixing shell (2) being rotatably connected to a rotating shell (4), wherein: It also includes a connecting shell (5), the connecting shell (5) is fixedly connected to the top end of the rotating shell (4), the rotating shell (4) is communicated with the connecting shell (5), the connecting shell (5) is fixedly connected to a support ring (6) through a mounting plate, the central axis of the support ring (6) coincides with the central axis of the rotating shell (4), the support ring (6) is installed with support columns (7) with circumferentially equal spacing, the rotating shell (4) is fixedly connected to a fixed slide rail (8) with circumferentially equal spacing, the fixed slide rail (8) is slidably connected to a sliding member (9), the sliding member (9) is rotatably connected to a rotating shaft (10), the rotating shaft (10) is fixedly connected to an extrusion column (11), one end of the rotating shaft (10) is fixedly connected to a mounting plate, a torsion spring (12) is fixedly connected between the mounting plate of the rotating shaft (10) and the adjacent sliding member (9), and a transmission assembly is arranged in the middle of the rotating shell (4), the transmission assembly is used to control the synchronous movement of the sliding members (9) with circumferentially equal spacing; The transmission assembly comprises a sliding ring (13), the sliding ring (13) being slidably connected to the rotating shell (4), a hinged rod (14) being hinged between the sliding ring (13) and the sliding members (9) at equal circumferential intervals, the rotating shell (4) being fixedly connected to a limiting ring (15), the limiting ring (15) being limitedly matched with the sliding ring (13), the rotating shell (4) being sleeved with a connecting ring (16), the connecting ring (16) being rotatably connected to a rotating ring (17) on a side away from the sliding ring (13), the base (1) being fixedly connected to a first push rod (18), the telescopic end of the first push rod (18) being fixedly connected to the rotating ring (17), a symmetrical pressure stabilizing component being arranged between the connecting ring (16) and the sliding ring (13), the pressure stabilizing component being used to ensure that the extrusion forces between the extrusion columns (11) at equal circumferential intervals and the lampshade are the same; The pressure stabilizing component comprises a first fixed tube (19), the first fixed tube (19) being fixedly connected to the sliding ring (13), the first fixed tube (19) being slidably and sealingly connected to a piston rod (20), the piston rod (20) being fixedly connected to the connecting ring (16), the first fixed tube (19) being fixedly connected to an oil storage shell (21) via a mounting plate, the oil storage shell (21) being connected to the adjacent first fixed tube (19) via a first connecting tube (22) and a second connecting tube (23), and the first fixed tube (19) being filled with hydraulic oil.

2. The fixing fixture with a central structure for preparing a lamp according to claim 1, characterized in that: The torsion force of the torsion spring (12) is greater than the resistance encountered by the lampshade when moving along the support column (7), thereby ensuring that the extrusion column (11) maintains a vertical state when driving the lampshade.

3. The fixing fixture with a central structure for preparing a lamp according to claim 2, characterized in that: The first connecting pipe (22) is installed with a one-way valve, and the second connecting pipe (23) is installed with a pressure valve, so that the hydraulic oil in the oil storage shell (21) can only flow along the first connecting pipe (22) into the first fixed pipe (19).

4. The fixing fixture with a centering structure for preparing a lamp according to claim 3 is characterized in that: The invention also comprises an adaptive support mechanism, the adaptive support mechanism being arranged between the connecting shell (5) and the supporting ring (6), the adaptive support mechanism being used to adapt to lampshades of different curvatures, the adaptive support mechanism comprising an extrusion ring (26), the extrusion ring (26) being rotatably connected to the supporting ring (6), the supporting columns (7) at equal circumferential intervals all being slidably matched with the supporting ring (6), the extrusion ring (26) being provided with arc-shaped through holes at equal circumferential intervals, the supporting columns (7) penetrating through the adjacent arc-shaped through holes of the extrusion ring (26), the supporting columns (7) at equal circumferential intervals all being extrusion-matched with the extrusion ring (26), A drive motor (27) is fixedly connected to one side of the support ring (6), an arc-shaped rack (28) is fixedly connected to the side of the support ring (6) close to the drive motor (27), a gear (29) meshing with the arc-shaped rack (28) is fixedly connected to the main shaft of the drive motor (27), a fixing ring (30) is fixedly connected to the mounting plate between the connecting shell (5) and the support ring (6) via an L-shaped plate, the support columns (7) at equal circumferential intervals are all slidably connected to the fixing ring (30), the bottom end of the support column (7) is fixedly connected to the mounting plate, and a first elastic member (31) is fixedly connected between the mounting plate of the support column (7) and the fixing ring (30).

5. The fixing fixture with a centering structure for preparing a lamp according to claim 4, characterized in that: The invention also comprises a negative pressure fixing mechanism, which is arranged at the top of the connecting shell (5) and is used to fix the lampshade. The negative pressure fixing mechanism comprises a suction cup (32), which is fixedly connected to the connecting shell (5). The suction cup (32) cooperates with the connecting shell (5) to form a cavity. The suction cup (32) is provided with a through hole, and the through hole of the suction cup (32) is connected to the cavity. The base (1) is fixedly connected with a second push rod (33), and the second push rod (33) is located in the fixed shell (2) and the rotating shell (4). The rotating shell (4) is slidably and sealingly connected with a first piston (34). The telescopic end of the second push rod (33) is rotatably connected to the first piston (34). A negative pressure regulating component is arranged between the connecting shell (5) and the extrusion columns (11) with equal circumferential spacing, and the negative pressure regulating component is used to adjust the state of the extrusion columns (11) with equal circumferential spacing.

6. The fixing fixture with a centering structure for preparing a lamp according to claim 5, characterized in that: The suction cup (32) is provided with two layers of annular soft rubber sheets, and the suction cup (32) is used to absorb the lampshade.

7. The fixing fixture with a centering structure for preparing a lamp according to claim 6, characterized in that: The negative pressure regulating assembly comprises second fixed tubes (35) with equal circumferential spacing, the second fixed tubes (35) with equal circumferential spacing are all embedded in the connecting shell (5), the second fixed tubes (35) are connected to the cavity between the suction cup (32) and the connecting shell (5), a second elastic member (36) is arranged in the second fixed tube (35), the second fixed tube (35) is slidably and sealingly connected to a second piston (37), the two ends of the second elastic member (36) are respectively fixedly connected to the adjacent second piston (37) and the adjacent second fixed tube (35), an indicator ring (38) is fixedly connected to the outer side of the second fixed tube (35), the rotating shaft (10) is fixedly connected to a rotating wheel (39), a pull rope (40) is fixedly connected between the rotating wheel (39) and the adjacent second piston (37), and the pull rope (40) runs through the adjacent second fixed tube (35).

8. The fixing fixture with a centering structure for preparing a lamp according to claim 7, characterized in that: The sliding member (9) is fixedly connected to a sealing shell (24), and the sealing shell (24) is fixedly connected to a symmetrical rubber plate (25). The sealing shell (24) and the symmetrical rubber plate (25) thereon are used to shield the adjacent extrusion columns (11).

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