阅读说明：本技术 定心装置 (Centering device ) 是由 陈从培 于 2021-09-10 设计创作，主要内容包括：本发明的目的是提供一种能够保证不粘锅的中心线与吸盘的中心线一致且精度高的定心装置,输送单元两侧的机架上至少设置三个定心块,定心块与驱动机构相连并在同一水平面内移动,多个定心块移动时处在圆心确定的半径各异的同一圆周上,定心块的最底部高于输送单元。上述方案中,驱动机构驱动多个定心块同步相互靠近或远离,由于多个定心块无论怎样移动,都处在圆心确定的同一圆周上,因此当多个定心块夹紧不粘锅的外壁时,能够将不粘锅的位置定位到不粘锅的中心与多个定心块的圆心重合的位置上,从而实现了不粘锅的精确定心,以保证后续喷涂效果,提高产品质量。(The invention aims to provide a centering device which can ensure that the center line of a non-stick pan is consistent with the center line of a sucker and has high precision. In the above scheme, a plurality of centering blocks of actuating mechanism drive are close to each other in step or keep away from, because no matter how much the removal of a plurality of centering blocks, all be in the same circumference that the centre of a circle is definite, consequently when the outer wall of tight non-stick pan of a plurality of centering block clamp, can fix a position the position of non-stick pan to the center of non-stick pan and the position of the centre of a circle coincidence of a plurality of centering blocks on to realized the accurate centering of non-stick pan, in order to guarantee follow-up spraying effect, improve product quality.)

1. A centering device, characterized by: at least three centering blocks (21) are arranged on the rack (10) on two sides of the conveying unit (A), the centering blocks (21) are connected with a driving mechanism and move in the same horizontal plane, the plurality of centering blocks (21) are positioned on the same circumference with different radiuses determined by circle centers when moving, and the bottommost part of each centering block (21) is higher than the conveying unit (A).

2. The centering device of claim 1, wherein: the driving mechanism is a linear driving mechanism, the number of the centering blocks (21) is four, two centering blocks are arranged on two sides of the conveying unit (A), and the centering blocks (21) are symmetrically arranged on the circumference defined by the centering blocks.

3. The centering device of claim 1, wherein: the inner surface of the centering block (21) facing the center of the enclosed circle is equidistant from the center of the circle.

4. The centering device of claim 2, wherein: the linear driving mechanism is an air cylinder (20), a piston rod of the air cylinder (20) faces to the center of the conveying unit (A) and a centering block (21) is connected to the end of the piston rod.

5. The centering device of claim 4, wherein: be provided with a long filament pole (31) on frame (10), long filament pole (31) are located the horizontal plane and length direction is perpendicular with conveying unit (A) direction of delivery, constitute normal running fit in bearing frame (11) that set up on frame (10) are arranged in at the both ends of long filament pole (31), the cover is equipped with nut slider (32) on long filament pole (31), nut slider (32) and cylinder (20) fixed connection, the thread of nut slider (32) cooperation department of long filament pole (31) and both sides is rotated to opposite, motor (33) drive long filament pole (31) rotate and drive cylinder (20) of both sides fold each other in step or expand each other in step.

6. The centering device of claim 4, wherein: two groups of cylinders (20) on the same side of the conveying unit (A) are fixedly connected with an angle-shaped plate (23) through a support (22), the section of the angle-shaped plate (23) is L-shaped, a transverse plate is fixed with the support (22), and a vertical plate is fixedly connected with a nut sliding block (32).

7. The centering device of claim 5, wherein: the machine frame (10) on the two sides of the long filament rod (31) is respectively provided with a guide rod (34), the length direction of the guide rod (34) is parallel to the length direction of the long filament rod (31), a guide sleeve (35) is sleeved on the guide rod (34), and the guide sleeve (35) is fixedly connected with a vertical plate of the angular plate (23).

8. The centering device of claim 6, wherein: support (22) including angle shape frame (221) from cylinder (20) downwardly extending, the lower extreme and connecting plate (222) of two angle shape frames (221) are fixed, the face of connecting plate (222) is located the horizontal plane, the lower face of connecting plate (222) passes through aluminum alloy ex-trusions (223) and the last face fixed connection of angle shaped plate (23) diaphragm, two sets of cylinders (20) with one side are the contained angle formula and arrange, and two sets of cylinders (20) are for the normal direction symmetrical arrangement of conveying unit (A).

9. The centering device of claim 8, wherein: the connecting plate (222) is a circular plate, a plurality of arc-shaped guide holes (222a) are formed in the plate surface of the circular plate, the curvature centers of the arc-shaped guide holes (222a) coincide with the circle center of the circular plate, a guide pin (223a) is arranged on the upper surface of the aluminum alloy section (223) in an upward protruding mode, the guide pin (223a) is arranged in the arc-shaped guide holes (222a) to form rotation guide matching, and a locking mechanism for locking the positions of the connecting plate (222) and the aluminum alloy section (223) is further arranged on the connecting plate.

10. The centering device according to any one of claims 1 to 9, wherein: the centering device is arranged at the upstream of the spraying device, and a blocking unit is also arranged on the frame (10) between the centering device and the spraying device.

Technical Field

The invention relates to the technical field of spraying equipment, in particular to a centering device.

Background

The non-stick pan is well received by consumers due to its non-stick performance, and in order to ensure the non-stick performance, the pan blank needs to be sprayed with three layers of priming paint, intermediate paint and finish paint in the production process. For the spraying of the non-stick pan, the most important is the uniformity of spraying, and as the positions of the primer spraying device, the intermediate paint spraying device and the finish spraying device are fixed, namely the position of the central line of the nozzle is fixed, the central position of the bottom of the non-stick pan is adsorbed by the suction disc below the nozzle as much as possible, and the central lines of the suction disc and the nozzle are superposed, the center of the supplied materials (non-stick pan) and the center of the nozzle can be superposed, so that all parts of the non-stick pan can be uniformly sprayed with paint, and the quality of products is improved. In order to improve the production efficiency, in the prior art, a non-stick pan is mostly placed on a conveying mechanism, and the non-stick pan is conveyed to a primer spraying device, a middle paint spraying device and a finish spraying device through the conveying mechanism for spraying, but in the process of conveying the non-stick pan forwards on the conveying mechanism, the non-stick pan inevitably vibrates to deviate from the original conveying center line of the non-stick pan, and the deviation direction and the deviation distance are uncertain.

In order to solve the problems, splayed guide plates are arranged on racks on two sides of a conveying mechanism in most industries, openings of the guide plates are gradually reduced from upstream to downstream, in the process that the non-stick pan is conveyed from upstream to downstream, the center line of the non-stick pan coming out from a downstream outlet is enabled to be consistent with the center line of a sucker due to guiding and limiting of an inner plate surface of the guide plates, but for the guide plates, in order to ensure that the non-stick pan can smoothly pass through the outlet, the size of the outlet is slightly larger than the outer diameter of the non-stick pan, or the guide plates have certain floating amount, so that the actual position and the theoretical position of the non-stick pan have a certain amount of deviation, the deviation exists between the center line of the non-stick pan and the center line of the sucker, and the final result is that the non-stick pan is not uniformly painted, and the quality of products is affected.

Disclosure of Invention

The invention aims to provide a centering device which can ensure that the central line of a non-stick pan is consistent with the central line of a sucker and has high precision.

In order to achieve the purpose, the invention adopts the technical scheme that: a centering device is characterized in that at least three centering blocks are arranged on a rack on two sides of a conveying unit, the centering blocks are connected with a driving mechanism and move in the same horizontal plane, a plurality of centering blocks are positioned on the same circumference with different radiuses determined by circle centers when moving, and the bottommost part of each centering block is higher than the conveying unit.

In the above scheme, a plurality of centering blocks of actuating mechanism drive are close to each other in step or keep away from, because no matter how much the removal of a plurality of centering blocks, all be in the same circumference that the centre of a circle is definite, consequently when the outer wall of tight non-stick pan of a plurality of centering block clamp, can fix a position the position of non-stick pan to the center of non-stick pan and the position of the centre of a circle coincidence of a plurality of centering blocks on to realized the accurate centering of non-stick pan, in order to guarantee follow-up spraying effect, improve product quality.

Drawings

FIG. 1 is a top view of a centering device;

fig. 2 is a front view of the centering device.

Detailed Description

As shown in fig. 1 and 2, in the centering device, at least three centering blocks 21 are arranged on a frame 10 at two sides of a conveying unit a, the centering blocks 21 are connected with a driving mechanism and move in the same horizontal plane, a plurality of centering blocks 21 are positioned on the same circumference with different radiuses determined by the circle center when moving (meaning that the circle center is determined, the circle centers can be multiple, the three centering blocks 21 can be positioned on the same circumference with different radiuses when moving, and when the inner surfaces of the centering blocks 21 facing the circle center are planes, the inner surfaces are tangent to the same circumference), and the bottommost part of the centering blocks 21 is higher than the conveying unit a. The driving mechanism can enable the linear driving mechanism to be a swinging driving mechanism or other forms, as long as the driving of the centering blocks 21 can be realized, meanwhile, the centering blocks 21 are required to be respectively arranged on the machine frames 10 at two sides of the conveying unit A and cannot be arranged at the same side, the driving mechanism drives the centering blocks 21 to synchronously approach or separate from each other, and the centering blocks 21 are positioned on the same circumference with determined circle centers no matter how the centering blocks 21 move, so that when the centering blocks 21 clamp the outer wall of the non-stick pan, the position of the non-stick pan can be positioned at the position where the center of the non-stick pan is coincident with the circle centers of the centering blocks 21, thereby realizing the accurate centering of the non-stick pan, ensuring the subsequent spraying effect and improving the product quality.

As a preferred embodiment of the present invention, the driving mechanism is a linear driving mechanism, four centering blocks 21 are provided, two centering blocks are respectively arranged on two sides of the conveying unit a, and the centering blocks 21 are symmetrically arranged on the circumference enclosed by the centering blocks. That is to say, the connecting line of the two opposite centering blocks 21 on the two sides passes through the center line of the non-stick pan, so that the stress of the non-stick pan is uniform, and the centering is more accurate.

Further, the inner surface of the centering block 21 facing the center of the circle is equidistant from the center of the circle. The surface of the centering block 21, which is attached to the non-stick pan, can be a plane or an arc surface, so that the inner surface of the centering block 21, which faces the center of the circle surrounded by the centering block, is equidistant from the center of the circle.

The linear driving mechanism is a cylinder 20, in order to improve the accuracy of the non-stick pan centering, the stroke of the cylinder 20 is determined, a piston rod of the cylinder 20 is arranged towards the center of the conveying unit A, and a centering block 21 is connected to the end of the piston rod.

The specific structure is that a long screw rod 31 is arranged on the rack 10, the long screw rod 31 is positioned in a horizontal plane, the length direction of the long screw rod 31 is perpendicular to the conveying direction of the conveying unit A, two ends of the long screw rod 31 are arranged in a bearing seat 11 arranged on the rack 10 to form a rotating fit, a nut sliding block 32 is sleeved on the long screw rod 31, the nut sliding block 32 is fixedly connected with the air cylinder 20, the screw thread rotating directions of the matching positions of the long screw rod 31 and the nut sliding blocks 32 on two sides are opposite, and the motor 33 drives the long screw rod 31 to rotate to drive the air cylinders 20 on two sides to be synchronously folded or synchronously expanded. The long screw rod 31 and the nut sliding blocks 32 form the simplest screw rod and nut mechanism, and the screw thread directions of the matching parts of the long screw rod 31 and the nut sliding blocks 32 on the two sides are opposite, so that the nut sliding blocks 32 connected on the two sides can be synchronously close to or far away from each other when the long screw rod 31 rotates in one direction, and the air cylinders 20 on the two sides of the conveying unit A are driven to be synchronously close to or far away from each other.

Due to the structure that two groups of cylinders 20 are arranged on one side, and the two groups of cylinders 20 on the same side of the conveying unit A are fixedly connected with the angle-shaped plate 23 through the bracket 22, on one hand, the two groups of cylinders 20 on the same side are ensured to move synchronously, on the other hand, the number of the screw rod nut mechanisms is reduced, and the arrangement is reasonable; the angled plate 23 is l-shaped in cross-section, wherein the cross-plate is fixed to the support 22 and the vertical plate is fixedly connected to the nut runner 32.

In order to ensure the moving stability of the air cylinder 20, the machine frame 10 on both sides of the filament rod 31 is respectively provided with a guide rod 34, the length direction of the guide rod 34 is parallel to the length direction of the filament rod 31, a guide sleeve 35 is sleeved on the guide rod 34, and the guide sleeve 35 is fixedly connected with a vertical plate of the angle plate 23, so that the air cylinder 20 is ensured to do linear motion.

Further, the bracket 22 comprises angle brackets 221 extending downwards from the cylinder 20, the lower ends of the two angle brackets 221 are fixed with a connecting plate 222, the plate surface of the connecting plate 222 is located in the horizontal plane, and the lower plate surface of the connecting plate 222 is fixedly connected with the upper plate surface of the transverse plate of the angle plate 23 through an aluminum alloy section 223. For non-stick pans with different heights, the heights of the cylinder 20 and the centering block 21 on the cylinder can be adjusted by changing the heights of the angle-shaped frame 221 and the aluminum alloy section 223, so that the clamping position is more reasonable.

Two sets of cylinders 20 with one side are the contained angle formula and arrange, and two sets of cylinders 20 are for the normal direction symmetrical arrangement of conveying unit A, press from both sides tightly more firm, fix a position more accurately.

Similarly, in order to be suitable for positioning non-stick pans of different sizes, the connecting plate 222 is a circular plate, a plurality of arc-shaped guide holes 222a are formed in the plate surface of the circular plate, the curvature centers of the arc-shaped guide holes 222a coincide with the circle center of the circular plate, a guide pin 223a is arranged on the upper surface of the aluminum alloy section 223 in a protruding mode, the guide pin 223a is arranged in the arc-shaped guide holes 222a to form rotating guide matching, and a locking mechanism for locking the positions of the connecting plate 222 and the aluminum alloy section 223 is further arranged on the connecting plate 222 and the aluminum alloy section 223. The connecting plate 222 is rotated to adjust the pointing direction of the air cylinder 20, so that the non-stick pan with different sizes is used.

Since the conveying unit a is conveyed forward all the way and the non-stick pan needs to be stopped to perform the positioning operation when reaching the position of the centering device, the centering device is arranged at the upstream of the spraying device, and a blocking unit is arranged on the frame 10 between the centering device and the spraying device.

Since the centering clamp unit 20 and the cross beam 51 are heavy and are far from sufficient by only relying on the three racks 34 and the third guide rail 31, a mechanism for providing a supporting function is provided, that is, the plate 32 is further fixedly provided with an air cylinder 61, a piston rod of the air cylinder 61 is arranged upwards and a rod core is arranged in the vertical direction, the end part of the piston rod is provided with a chain wheel 62, the chain wheel 62 is meshed with a chain 63, one end of the chain 63 is fixed on the plate 32, and the other end of the chain passes through the plate 32 and is fixedly connected with the second slide block. The weight of the centering clamp unit 20 and the cross beam 51 is mainly supported by the tightening action of the chain 63, thereby ensuring the stability of the movement of the centering clamp unit 20 in the Z direction.