A synchronous centering device

Abstract

The present invention relates to the field of centering devices, and in particular to a synchronous centering device, comprising a mounting plate, a gear seat being fixed at the center position of the mounting plate, a gear being rotatably connected to the gear seat, racks being meshed on both sides of the gear, the racks being slidably connected to the mounting plate, a fixing plate being fixed to the rack, a support rod being fixed at one end of the fixing plate away from the gear, lever assemblies being fixed at both ends of the support rod, a piston rod of a cylinder being fixed on the outer surface of one of the fixing plates, and the cylinder being fixed on the mounting plate. The synchronous centering device of the present invention can adapt to tires of different sizes, does not require additional manual adjustment, and can achieve complete centering of the tires. In addition, the tires will not be damaged by being transmitted against the side of a transmission frame, and the tires are well protected. The arrangement of a telescopic mechanism and a gap adjustment mechanism not only facilitates the pushing of the tires when the tires are centered, but also provides good protection for the bottom surface of the tires.

Description

Technical Field

[0001] The invention relates to the field of centering devices, and in particular to a synchronous centering device. Background Art

[0002] In modern tire automated production conveyor lines, tires are conveyed through roller conveyors, and after completing one process, they are conveyed to the next process for processing. However, tires are prone to deviation during the conveyance process on roller conveyors. If the tire is not on the center line, it will cause great trouble to the processing, affecting the efficiency and quality of the processing. Therefore, during the tire conveyance process, the tire is often centered through a centering structure so that the tire is located at the center line. Patent application number CN202321559994.1 discloses a tire centering structure for a tire production line. The tire centering structure guides the tire to move between the vertical guide plates after the tire contacts the inclined guide plate, thereby completing the guided centering adjustment of the tire. However, the tire centering structure still has the following disadvantages: 1) For tires of different sizes, the distance between the centering mechanisms needs to be readjusted, which is very troublesome; 2) In order to ensure the smooth transmission of the tire on the production line, the diameter of the tire must be smaller than the width between the two vertical guide plates. This will inevitably cause the center of the tire to deviate slightly from the center line of the production line and cannot be completely centered; 3) After the tire enters between the vertical guide plates through the guidance of the inclined guide plate, it will move forward along one of the vertical guide plates. This transmission method will cause a certain degree of wear on the tire, and then cause damage to the tire. Therefore, a centering device that can completely center the tire and protect the tire well is urgently needed. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies of the prior art, the present invention aims to provide a synchronous centering device to solve the problems existing in the prior art. The present invention can automatically center the tire so that the tire can be completely located at the center of the transmission frame, and the tire can be well protected during the tire centering process.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a synchronous centering device, comprising a mounting plate, a gear seat fixed at the center position of the mounting plate, a gear rotatably connected to the gear seat, racks meshing on both sides of the gear, the racks are slidably connected to the mounting plate, a fixing plate is fixed on the rack, a support rod is fixed at one end of the fixing plate away from the gear, lever assemblies are fixed at both ends of the support rod, a piston rod of a cylinder is fixed to the outer surface of one of the fixing plates, and the cylinder is fixed to the mounting plate.

[0007] Preferably, the lever assembly includes a fixing seat fixed to the end of the support rod, a bottom plate is fixed to the top surface of the fixing seat, a back plate is fixed to the bottom plate, a top plate is fixed to the back plate, and a plurality of rotating cylinders are rotatably connected between the top plate and the bottom plate.

[0008] Preferably, the two lever assemblies on the same support rod are perpendicular to each other, and the two lever assemblies on the same side of different support rods are perpendicular to each other.

[0009] Preferably, four rotating drums are arranged on the lever assembly.

[0010] Preferably, a plurality of telescopic mechanisms are fixedly connected between the two support rods, the telescopic mechanisms include a plurality of telescopic X-shaped frames, the X-shaped frames include a hinge axis, an upper left portion, a lower left portion, an upper right portion and a lower right portion, wherein the upper left portion of the rear X-shaped frame is hinged to the upper right portion of the front X-shaped frame, and the lower left portion of the rear X-shaped frame is hinged to the lower right portion of the front X-shaped frame, wherein the lower left portion of the left X-shaped frame is fixed to the left support rod, and the lower right portion of the right X-shaped frame is fixed to the right support rod, and protective mechanisms are fixed to the tops of the upper left and upper right portions of the X-shaped frames.

[0011] Preferably, the protection mechanism comprises a fixed frame fixed to the top of the upper left portion or the top of the upper right portion, a rotating wheel is rotatably connected inside the fixed frame, and a portion of the rotating wheel extends out of the fixed frame.

[0012] Preferably, the fixing frame on the upper left portion is arranged on the left side of the top of the upper left portion, and the fixing frame on the upper right portion is arranged on the right side of the top of the upper right portion.

[0013] Preferably, a variable gap is formed between two adjacent fixed frames, and starting from the second gap, every two gaps form a group. A gap adjustment mechanism is provided in each group of gaps. The gap adjustment mechanism includes a first airbag arranged in the previous gap and a second airbag arranged in the latter gap. The first airbag and the second airbag are connected by a connecting tube.

[0014] Preferably, a first fixing plate is fixed to the bottom of the first airbag, the rear end of the first fixing plate is fixed to the fixing frame on its rear side, and a first socket matching the first fixing plate is opened on the fixing frame on its front side; a second fixing plate is fixed to the bottom of the second airbag, the rear end of the second fixing plate is fixed to the fixing frame on its rear side, and a second socket matching the second fixing plate is opened on the fixing frame on its front side.

[0015] Preferably, the bottom surface of the first airbag is fixed on the first fixing plate, and the bottom surface of the second airbag is fixed on the second fixing plate.

[0016] (III) Beneficial effects

[0017] 1. The synchronous centering device of the present invention can adapt to tires of different sizes, does not require additional manual adjustment, and can achieve complete centering of the tire. In addition, the tire will not be damaged by being transported against the side of the transport frame, and the tire is well protected;

[0018] 2. The invention not only facilitates the pushing of the tire when the tire is centered by setting the telescopic mechanism, but also plays a good role in protecting the bottom surface of the tire. In addition, the telescopic mechanism cleverly uses the approach and distance of the two support rods to achieve the extension and shortening of the telescopic mechanism, and does not require additional power, which greatly saves energy.

[0019] 3. The present invention not only fills the gap but also makes it possible to adjust the gap flexibly by setting the gap adjustment mechanism, thereby further ensuring that the tire can be effectively moved without getting stuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an overall schematic diagram of the present invention.

[0021] Figure 2 Schematic diagram of the lever assembly of the present invention.

[0022] Figure 3 It is a schematic diagram of the support rod and telescopic mechanism of the present invention.

[0023] Figure 4 It is a schematic diagram of the support rod and telescopic mechanism of the present invention.

[0024] Figure 5 It is a schematic diagram of the X-shaped frame of the present invention.

[0025] Figure 6 It is a schematic diagram of the protection mechanism of the present invention.

[0026] Figure 7 For the present invention Figure 3 Schematic diagram after adding the gap adjustment mechanism.

[0027] Figure 8 It is a schematic diagram of a portion of the X-frame of the present invention and the gap adjustment mechanism thereon.

[0028] Fig. 9 This is a schematic diagram of the present invention after being installed on a transport frame and having tires placed thereon.

[0029] In the figure: 1-mounting plate, 2-gear seat, 3-gear, 4-rack, 5-fixed plate, 6-support rod, 7-shift rod assembly, 8-cylinder, 9-fixed seat, 10-bottom plate, 11-back plate, 12-top plate, 13-rotating cylinder, 14-telescopic mechanism, 15-X-type frame, 16-hinge shaft, 17-upper left part, 18-lower left part, 19-upper right part, 20-lower right part, 21-protection mechanism, 22-fixed frame, 23-rotating wheel, 24-gap, 25-gap adjustment mechanism, 26-first air bag, 27-second air bag, 28-connecting pipe, 29-first fixed plate, 30-first socket, 31-second fixed plate, 32-second socket. DETAILED DESCRIPTION

[0030] The following will be combined with the attached embodiment of the present invention Figure 1-9 The technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] The present invention provides a technical solution: a synchronous centering device, comprising a mounting plate 1, a gear seat 2 is fixed at the center of the mounting plate 1, a gear 3 is rotatably connected to the gear seat 2, racks 4 are meshed on both sides of the gear 3, the racks 4 are slidably connected to the mounting plate 1, a fixing plate 5 is fixed on the rack 4, a support rod 6 is fixed at one end of the fixing plate 5 away from the gear 3, and lever assemblies 7 are fixed at both ends of the support rod 6, a piston rod of a cylinder 8 is fixed on the outer surface of one of the fixing plates 5, and the cylinder 8 is fixed on the mounting plate 1. When working, Fig. 9 As shown, the synchronous centering device is installed on the transmission frame. When the tire is transmitted to or placed on the transmission frame, the cylinder 8 is started, and its piston rod contracts to drive the fixed plate 5 fixed thereto to run in the direction of the gear 3, thereby driving the rack 4 fixed on the fixed plate 5 to mesh with the gear 3 to run, thereby causing the gear 3 to rotate, thereby driving the other rack 4 to synchronously run in the opposite direction, thereby driving the two support rods 6 fixed on the fixed plate 5 to synchronously move toward each other, and then the center of the tire on the transmission frame is pushed to the centerline position of the transmission frame through the lever assembly 7 fixed on the support rod 6, thereby achieving the centering effect, and then the cylinder 8 runs in the opposite direction, so that the support rod 6 returns to its original position, and the next tire is centered. Through the setting of the synchronous centering device, it can adapt to tires of different sizes without the need for additional manual adjustment, and can achieve complete centering of the tire. In addition, the tire will not be damaged by being transmitted against the side of the transmission frame, and the tire is well protected.

[0032] The lever assembly 7 includes a fixed seat 9 fixed to the end of the support rod 6, a bottom plate 10 is fixed on the top surface of the fixed seat 9, a back plate 11 is fixed to the bottom plate 10, a top plate 12 is fixed to the back plate 11, and a plurality of rotating drums 13 are rotatably connected between the top plate 12 and the bottom plate 10. Through the arrangement of the lever assembly 7 of this structure, not only can the tire be moved to the center position, but also the arrangement of the rotating drum 13 plays a good auxiliary effect, because the material of the tire is rubber, the resistance it generates is relatively large, and the arrangement of the roller 13 greatly reduces the resistance, and also plays a good protective role on the tire surface.

[0033] The two lever assemblies 7 on the same support rod 6 are perpendicular to each other, and the two lever assemblies 7 on the same side of different support rods 6 are perpendicular to each other. This arrangement makes the tire an inscribed circle of the four lever assemblies 7, which greatly improves the accuracy of tire alignment.

[0034] There are four rotating drums 13 on the lever assembly 7. The arrangement of this number of rotating drums 13 can effectively protect the tire while ensuring the effective shifting of the tire.

[0035] A plurality of telescopic mechanisms 14 are fixedly connected between the two support rods 6. The telescopic mechanisms 14 include a plurality of telescopic X-shaped frames 15. The X-shaped frames 15 include a hinge shaft 16, a left upper portion 17, a left lower portion 18, a right upper portion 19, and a right lower portion 20. The left upper portion 17 of the rear X-shaped frame 15 is hinged to the right upper portion 19 of the front X-shaped frame 15, and the left lower portion 18 of the rear X-shaped frame 15 is hinged to the right lower portion 19 of the front X-shaped frame 15. The left lower portion 18 of the left X-shaped frame 15 is fixed to the left support rod 6, the right lower portion 19 of the right X-shaped frame 15 is fixed to the right support rod 6, and the top of the left upper portion 17 and the right upper portion 18 of the X-shaped frame 15 are fixed with a protection mechanism 21, the protection mechanism 21 includes a fixed frame 22 fixed to the top of the left upper portion 17 or the top of the right upper portion 18, and a rotating wheel 23 is rotatably connected in the fixed frame 22, and a part of the rotating wheel 23 extends out of the fixed frame 22, such as Fig. 9 As shown, the transmission of tires is often used as follows Fig. 9In order to ensure the transmission effect, the transmission frame shown in the figure is often provided with Y-shaped metal sheets on the rollers of this type of transmission frame to improve the transmission effect. These Y-shaped metal sheets have little effect on the tires during the transmission process, but have a great impact on the tires during the centering process, because the centering process is that the direction of the tire running is perpendicular to the direction in which it is transmitted by the rollers, and the centering process is to push the tire to the middle position through the lever assembly 7, so the bottom surface of the tire will inevitably produce a large friction with the Y-shaped metal sheets provided on the rollers during the pushing process, and the Y-shaped metal sheets will inevitably cause certain damage to the bottom surface of the tire, and even cause the tire to be stuck and unable to be pushed, so this problem is solved by the setting of the telescopic mechanism 14. The telescopic mechanism 14 does not need to provide additional power, and cleverly uses the approach and separation of the two support rods 6 to achieve the extension and shortening of the telescopic mechanism 14. Each telescopic mechanism 14 is respectively aligned with the gap between the two rollers on the transmission frame, and the width of the gap is set according to needs. When the distance between the two support rods 6 is the largest, that is, the original position of the centering device when the tire has not been centered, the top of the protection mechanism 21 is slightly lower than the top of the roller on the transmission frame, which does not affect the placement of the tire and the transmission of the tire by the transmission frame. When the tire is placed on the transmission frame, the centering device begins to center the tire. At this time, the two support rods 6 begin to approach each other. The process of approaching each other squeezes the telescopic mechanism 14, which causes the telescopic mechanism 14 to contract, and then causes the protection mechanism 21 to rise. The protection mechanism 21 rises and lifts the tire away from the roller on the transmission frame. After that, the tire is supported and transmitted by the protection mechanism 21, wherein the protection mechanism 21 is arranged to be composed of a fixed frame 22 and a rotating wheel 23. This not only facilitates the pushing of the tire when the tire is centered, but also provides good protection for the bottom surface of the tire.

[0036] The fixing frame 22 on the upper left portion 17 is arranged on the left side of the top of the upper left portion 17, and the fixing frame 22 on the upper right portion 18 is arranged on the right side of the top of the upper right portion 18. This arrangement minimizes the mutual influence between the two adjacent fixing frames 22 during the rising process.

[0037] A variable gap 24 is formed between two adjacent fixed frames 22. Starting from the second gap 24, every two gaps 24 form a group. A gap adjustment mechanism 25 is provided in each group of gaps 24. The gap adjustment mechanism 25 includes a first airbag 26 arranged in the previous gap 24 and a second airbag 27 arranged in the subsequent gap 24. The first airbag 26 and the second airbag 27 are connected by a connecting pipe 28. Due to the characteristics of the telescopic mechanism 14, during the telescopic process, the width of one of the two adjacent gaps 24 will become larger and the other will become smaller. Due to the special structure of the tire, the existence of the gap 24 will cause the tire to get stuck during the tire alignment process. Therefore, through the setting of the gap adjustment mechanism 25, not only the gap 25 can be filled but also flexibly adjusted, thereby further ensuring that the tire can be effectively moved without getting stuck. Its specific working principle is as follows: during the contraction of the telescopic mechanism 14, the fixed frames 22 on both sides of the first airbag 26 will squeeze the first airbag 26, and squeeze the gas in the first airbag 26 into the second airbag 27 through the connecting tube 28, so that the second airbag 27 can fill the enlarged gap 24 in which it is located; during the extension of the telescopic mechanism 14, the gas in the second airbag 27 is squeezed into the first airbag 26 through the connecting tube 28. This setting fills the gap 24 well and can well adapt to the change in the width of the gap 24 during the telescopic process, thereby further protecting the tire while ensuring smooth alignment of the tire.

[0038] A first fixing plate 29 is fixed to the bottom of the first airbag 26, and the rear end of the first fixing plate 29 is fixed to the fixing frame 22 on the rear side thereof, and a first socket 30 matching the first fixing plate 29 is provided on the fixing frame 22 on the front side thereof. A second fixing plate 31 is fixed to the bottom of the second airbag 27, and the rear end of the second fixing plate 31 is fixed to the fixing frame 22 on the rear side thereof, and a second socket 32 ​​matching the second fixing plate 31 is provided on the fixing frame 22 on the front side thereof. The first airbag 26 is well limited by the setting of the first fixing plate 29, and the second airbag 27 is well limited by the setting of the second fixing plate 31, so as to prevent the first airbag 26 and the second airbag 27 from being clamped by the telescopic mechanism 14 below them.

[0039] The bottom surface of the first airbag 26 is fixed on the first fixing plate 29, and the bottom surface of the second airbag 27 is fixed on the second fixing plate 31, that is, the first airbag 26 and the second airbag 27 are not fixed to the fixing frame 22, so that the first airbag 26 and the second airbag 27 are well protected and their service life is increased.

[0040] Working principle: When working, the synchronous centering device is installed on the transmission frame. When the tire is transmitted to or placed on the transmission frame, the cylinder 8 is started, and its piston rod contracts to drive the fixed plate 5 fixed thereto to run in the direction of the gear 3, thereby driving the rack 4 fixed on the fixed plate 5 to mesh with the gear 3 to run, thereby causing the gear 3 to rotate, thereby driving the other rack 4 to synchronously run in the opposite direction, thereby driving the two support rods 6 fixed on the fixed plate 5 to synchronously move toward each other, and then the center of the tire on the transmission frame is pushed to the centerline position of the transmission frame through the lever assembly 7 fixed on the support rod 6, thereby achieving the centering effect, and then the cylinder 8 runs in the opposite direction, causing the support rod 6 to return to its original position, and the next tire is centered. Through the setting of the synchronous centering device, it can adapt to tires of different sizes without the need for additional manual adjustment, and can achieve complete centering of the tire. In addition, the tire will not be damaged by being transmitted against the side of the transmission frame, and the tire is well protected. The arrangement of the telescopic mechanism 14 and the gap adjustment mechanism 25 not only facilitates the pushing of the tire during tire centering, but also provides good protection for the bottom surface of the tire.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A synchronous centering device, characterized in that: The invention comprises a mounting plate (1), a gear seat (2) being fixed at the center of the mounting plate (1), a gear (3) being rotatably connected to the gear seat (2), racks (4) being meshed on both sides of the gear (3), the racks (4) being slidably connected to the mounting plate (1), a fixing plate (5) being fixed on the rack (4), a support rod (6) being fixed at one end of the fixing plate (5) away from the gear (3), a lever assembly (7) being fixed at both ends of the support rod (6), a piston rod of a cylinder (8) being fixed on the outer surface of one of the fixing plates (5), and the cylinder (8) being fixed on the mounting plate (1).

2. A synchronous centering device according to claim 1, characterized in that: The lever assembly (7) comprises a fixing seat (9) fixed to the end of the support rod (6); a bottom plate (10) is fixed on the top surface of the fixing seat (9); a back plate (11) is fixed to the bottom plate (10); a top plate (12) is fixed to the back plate (11); and a plurality of rotating drums (13) are rotatably connected between the top plate (12) and the bottom plate (10).

3. A synchronous centering device according to claim 2, characterized in that: The two lever assemblies (7) on the same support rod (6) are perpendicular to each other, and the two lever assemblies (7) on the same side of different support rods (6) are perpendicular to each other.

4. A synchronous centering device according to claim 2, characterized in that: Four rotating drums (13) are provided on the lever assembly (7).

5. A synchronous centering device according to claim 1, characterized in that: A plurality of telescopic mechanisms (14) are fixedly connected between the two support rods (6), the telescopic mechanisms (14) comprising a plurality of telescopic X-shaped frames (15), the X-shaped frames (15) comprising a hinge shaft (16), a left upper part (17), a left lower part (18), a right upper part (19) and a right lower part (20), wherein the left upper part (17) of the rear X-shaped frame (15) is hingedly connected to the right upper part (19) of the front X-shaped frame (15), and the rear X-shaped frame (15) is hingedly connected to the rear X-shaped frame (15). The lower left portion (18) of the X-shaped frame (15) is hingedly connected to the lower right portion (19) of the previous X-shaped frame (15), wherein the lower left portion (18) of the left X-shaped frame (15) is fixed to the left support rod (6), and the lower right portion (19) of the right X-shaped frame (15) is fixed to the right support rod (6), and the tops of the upper left portion (17) and the upper right portion (18) of the X-shaped frame (15) are both fixed with protective mechanisms (21).

6. A synchronous centering device according to claim 5, characterized in that: The protection mechanism (21) comprises a fixed frame (22) fixed to the top of the upper left part (17) or the top of the upper right part (18), a rotating wheel (23) is rotatably connected inside the fixed frame (22), and a portion of the rotating wheel (23) extends out of the fixed frame (22).

7. A synchronous centering device according to claim 6, characterized in that: The fixing frame (22) on the upper left portion (17) is arranged on the left side of the top of the upper left portion (17), and the fixing frame (22) on the upper right portion (18) is arranged on the right side of the top of the upper right portion (18).

8. A synchronous centering device according to claim 6, characterized in that: A variable gap (24) is formed between two adjacent fixed frames (22), and starting from the second gap (24), every two gaps (24) form a group. A gap adjustment mechanism (25) is provided in each group of gaps (24), and the gap adjustment mechanism (25) includes a first airbag (26) arranged in the previous gap (24) and a second airbag (27) arranged in the next gap (24). The first airbag (26) and the second airbag (27) are connected to each other through a connecting pipe (28).

9. A synchronous centering device according to claim 8, characterized in that: A first fixing plate (29) is fixed to the bottom of the first airbag (26), the rear end of the first fixing plate (29) is fixed to the fixing frame (22) at its rear side, and a first socket (30) matching the first fixing plate (29) is opened on the fixing frame (22) at its front side; a second fixing plate (31) is fixed to the bottom of the second airbag (27), the rear end of the second fixing plate (31) is fixed to the fixing frame (22) at its rear side, and a second socket (32) matching the second fixing plate (31) is opened on the fixing frame (22) at its front side.

10. A synchronous centering device according to claim 9, characterized in that: The bottom surface of the first airbag (26) is fixed on the first fixing plate (29), and the bottom surface of the second airbag (27) is fixed on the second fixing plate (31).

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