CN114988065B

CN114988065B - Automatic centering device

Info

Publication number: CN114988065B
Application number: CN202210774033.6A
Authority: CN
Inventors: 唐湛; 叶雪丽; 周国辉; 袁晓冰
Original assignee: Changhong Meiling Co Ltd
Current assignee: Changhong Meiling Co Ltd
Priority date: 2022-07-01
Filing date: 2022-07-01
Publication date: 2024-08-02
Anticipated expiration: 2042-07-01
Also published as: CN114988065A

Abstract

The automatic centering device provided by the invention controls the telescopic cylinder and the motor to move through the electric control system. Through setting up inductive switch on the speed reduction position, stop position and the connecting plate of transportation line, inductive switch feeds back the signal to electrical system when predetermineeing the condition and triggers, and electrical system is according to the flexible cylinder motion of feedback signal control, lift cylinder and motor motion in order to drive horizontal centering mechanism and vertical centering mechanism motion to the position of adjustment baffle is in order to realize horizontal centering and vertical centering of material and material base, has solved the material and has inclined or break away from the difficult problem of sweeping the sign indicating number registration that the material base leads to because of the transportation rate on the transportation line changes.

Description

Automatic centering device

Technical Field

The application relates to the technical field of material conveying, in particular to an automatic centering device.

Background

The material conveying line is in the in-process of transporting the material, because of the material is different, its size is also different. In order to facilitate the registration operations such as turning over and scanning the materials, the base for transporting the materials needs to be in a centered state before registration on the conveying line.

Centering devices employed in the related art of holding materials and bases only perform centering operations with respect to the material base, keeping the materials centered under the condition of ensuring centering of the material base. But in the transportation, friction can take place between material and the base and lead to the material slope and then can't accurate sign indicating number registration of sweeping. And when the material and the base enter a deceleration area of the conveying line, the material can fall off the base due to inertia, so that accidents are caused.

In order to prevent the problem of inaccurate code scanning registration caused by material tilting and falling, it is necessary to provide a centering device that simultaneously maintains the base and the material in a centered state.

Disclosure of Invention

The application provides an automatic centering device, which aims to solve the problem that the code scanning registration cannot be accurately performed due to the inclination and falling of household appliances caused by the change of the conveying speed of materials on a conveying line.

The application provides an automatic centering device, which is used for transversely centering a material and a material base on a conveying line and comprises the following components: the system comprises an electric control system, a cylinder assembly and a first baffle assembly;

the cylinder assembly includes: the device comprises a telescopic cylinder, a swing rod, a connecting shaft, a rotary rod and a connecting rod; the first baffle plate group

The piece includes: guide rod, baffle and connecting plate;

The electric control system is electrically connected with the telescopic cylinder; a piston rod is arranged in the telescopic cylinder and is hinged with the swing rod; one end of the connecting shaft is hinged with the swing rod; the other end of the connecting shaft is fixed in the middle of the rotary rod; two ends of the rotary rod are respectively hinged with the connecting rod; the connecting rod is fixed on the connecting rod

The connecting plate is arranged on the connecting plate; the connecting plate is connected with the baffle; the connecting plate is provided with a guide hole; the guide rod passes through the guide hole.

Further, the cylinder assembly further includes a hinge support, and the first shutter assembly further includes: a sleeve 8; the shaft sleeve is arranged at the joint of the guide rod 7 and the guide hole.

Further, the first baffle assembly further comprises: a support bar 5 and a spring 6; support holes are formed in the connecting plate 11 and the baffle plate 10; the support rod 5 passes through the support hole; the connecting plate 11 is connected with the baffle 10 through the supporting rod 5; the spring 6 is sleeved on the supporting rod 5; the two ends of the spring 6 are respectively connected with the baffle 10 and the connecting plate 11.

Further, the baffle 10 includes: a material baffle and a base baffle; the distance between the material baffle and the connecting plate 11 is a first distance; the distance between the base baffle and the connecting plate 11 is a second distance; the first distance is not equal to the second distance.

Further, the end part of the piston rod 13 is of a Y-shaped joint structure; the end part of the connecting rod is of a Y-shaped joint structure; the piston rod 13 is hinged with the swing rod 212 through the Y-shaped joint structure; both ends of the rotary rod 214 are hinged with the connecting rod 215 through the Y-shaped joint structure respectively.

Further, one end of the connecting shaft 213 is hinged to the swing rod 212 through a key connection; the other end of the connecting shaft 213 is hinged to the swing lever 214 by a key connection.

As can be seen from the foregoing, the centering device provided by the embodiment of the present application includes a cylinder assembly and a first baffle assembly. The telescopic cylinder is controlled by the electric control system to drive the swing rod to move. Because the swing rod is connected with the rotary rod in a key connection mode, the rotary rod moves along with the movement of the swing rod. The connecting rods are connected to the two ends of the rotary rod and connected to the connecting plates in the baffle assembly, so that the connecting rods move along with the movement of the rotary rod. The connecting plate is connected with the baffle through a support column sleeved with a spring. The connecting rod contracts and then drives the baffle shrink, and the baffle overcomes the elasticity and simultaneously clamps material and material base, and the inductive switch that until setting up on the connecting plate senses that the bracing piece has reached the preset position, and inductive switch feeds back the signal to electrical system, and electrical system judges that material and material base have transversely placed in the middle, and control pendulum rod makes its initial state of resumption with the opposite direction motion.

Further, the centering device further includes: a motor drive assembly 31 and a second baffle assembly 32;

The motor drive assembly 31 includes: a driving motor 311, a steering box 312 and a lead screw 313; by a means of

The second baffle assembly includes: the device comprises a mounting plate, a guide rod 7, a shaft sleeve 8, a baffle 10 and a connecting plate 11; the electric control system 12 is electrically connected with the driving motor 311; driving of the driving motor 311

An end connected to the turn tank 312; the mounting plate is provided with a mounting hole; the lead screw 313 passes through

The mounting hole is connected with the steering box 312; the mounting plate is provided with a guide hole, and the guide rod 7

The guide rod 7 passes through the guide hole, and the shaft sleeve 8 is arranged at the joint of the guide rod 7 and the guide hole; the gear

The plate 10 is connected to said connection plate 11.

Further, the motor driving assembly 31 further includes a screw nut 314; the screw nut 314 is disposed at the junction of the screw 313 and the mounting hole.

Further, the second baffle assembly further comprises: a lifting cylinder 321; the lifting cylinder 321 is arranged on the mounting plate; a piston rod 13 arranged in the lifting cylinder 321 is connected with the connecting plate 11; the electric control system 12 is electrically connected with the lifting cylinder 321.

Further, the electronic control system 12 includes: a controller and an inductive switch; the controller is electrically connected with the inductive switch; the inductive switch is arranged on the connecting plate 11. The controller is electrically connected with the telescopic cylinder 211; the controller is electrically connected with the driving motor 311;

The controller is configured to: receiving a signal fed back by the inductive switch and controlling the telescopic cylinder 211 to move according to the signal so as to perform centering operation; the lifting cylinder 321 and the driving motor 311 are also controlled to perform centering operation according to the signals.

As can be seen from the above technology, the centering device provided by the embodiment of the application includes a motor driving assembly and a second baffle assembly. The motor is controlled by the electric control system to rotate so as to drive the screw rod to rotate, the mounting plate is driven to approach, the mounting plate is connected with the baffle through the support rod sleeved with the spring, the baffle moves along with the movement of the mounting plate and overcomes the elasticity to clamp the material and the material base until the inductive switch arranged on the lifting connecting plate senses that the support rod reaches the preset position, the inductive switch feeds back a signal to the electric control system, and the electric control system judges that the material and the material base are longitudinally centered and controls the motor to rotate reversely, so that the centering device is restored to an initial state.

The automatic centering device provided by the embodiment of the application controls the telescopic cylinder and the motor to move through the electric control system. Through setting up inductive switch on the speed reduction position, stop position and the connecting plate of transportation line, inductive switch feeds back the signal to electrical system when predetermineeing the condition and triggers, and electrical system is according to the flexible cylinder motion of feedback signal control, lift cylinder and motor motion in order to drive horizontal centering mechanism and vertical centering mechanism motion to the position of adjustment baffle is in order to realize horizontal centering and vertical centering of material and material base, has solved the material and has inclined or break away from the difficult problem of sweeping the sign indicating number registration that the material base leads to because of the transportation rate on the transportation line changes.

Drawings

In order to more clearly illustrate the technical solution of the present application, the drawings that are needed in the embodiments will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a roller conveyor line according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a left-right centering structure according to an embodiment of the present application;

FIG. 3 is a side view of a left-right centering structure provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of a front-to-back centering structure according to an embodiment of the present application;

FIG. 5 is a top view of a front-to-rear centering structure provided by an embodiment of the present application;

fig. 6 is an overall structure diagram of an automatic centering device according to an embodiment of the present application.

Illustration of:

Wherein, 1-roller conveying line; 111-frame; 112-a power roller; 113-a chain; 114-sprocket; 115-idler; 116-double row sprocket; 118-a transport motor; 119-motor shaft;

2-left and right centering mechanisms; a 21-cylinder assembly; 211-a telescopic cylinder; 212-swinging rod; 213-connecting shaft; 214-a swivel rod; 215-connecting rods;

3-front-rear centering mechanism; 31-a motor assembly; 32-a second baffle assembly; 311-driving a motor; 312-steering box; 313-lead screw; 314-a lead screw nut; 321-lifting cylinders; ;

4-hinging support; 5-supporting rods; 6-a spring; 7-a guide rod; 8-shaft sleeve; 9-opening type shaft support; 10-baffle plates; 11-connecting plates; 12-an electronic control system; 13-piston rod.

Detailed Description

Reference will now be made in detail to the embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The embodiments described in the examples below do not represent all embodiments consistent with the application. Merely exemplary of systems and methods consistent with aspects of the application as set forth in the claims.

In the description of the present invention, it should be understood that words such as "upper," "lower," "left," "right," "front," "rear," and the like indicate positional or positional relationships, are merely used to describe the invention and simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. For example, the terms "baffle", "front baffle" and "rear baffle" are used herein for convenience of description of the features of the present invention, and "baffle" may include "left baffle" and "right baffle" and "front baffle" and "rear baffle" may also include "front baffle" and "rear baffle", by way of illustration only and not by way of limitation.

The application provides an automatic centering device which solves the problem that code scanning registration is difficult due to the fact that materials incline or are separated from a material base due to the change of the conveying speed on a conveying line. A centering device provided in accordance with an embodiment of the present application is described below in connection with a roller conveyor line.

Referring to fig. 1, a roller conveyor line is provided, and the centering device provided in this embodiment is suitable for use in such a conveyor line. The roller conveyor line includes: the device comprises a frame, a power roller, a chain wheel, an idler wheel, a double-row chain wheel, a conveying chain, a conveying motor, a motor shaft and a bearing. Wherein: the frame can be assembled by square tube welding or aluminum profiles, the transportation motor is arranged on the frame, the transportation motor is connected with the motor shaft through a key, the chain wheels are arranged at two ends of the motor shaft, the bearing with the seat is arranged at the top of the frame, the chain wheel shaft is arranged on the bearing, the double-row chain wheels are arranged on the chain wheel shaft, the bearing is arranged between the double-row chain wheels and the chain wheel shaft, the chain wheels on the motor shaft transmit power to the double-row chain wheels through the chain, the double-row chain wheels are meshed with the conveying chain, the tail end of the conveying chain is provided with an idler wheel, the position of the idler wheel is adjustable, the double-row chain wheels drive the conveying chain to move, the conveying chain drives the power roller to rotate, and accordingly the base and the materials on the roller are driven to be conveyed forwards.

Often, a base is provided for the material during transport using roller conveyor lines as shown in the figures so as to reduce friction between the material and the rollers and to protect the material housing. When transporting the material, place the material on the material base, the material base can realize the transportation of material through the frictional force that produces between with the cylinder advance. In order to ensure that materials and material bases are not inclined or separated from the bases due to inertia caused by the change of the conveying speed when conveyed to a speed reduction area and a stop area, the embodiment of the application provides a centering device.

Referring to fig. 2 and 3, fig. 2 and 3 are block diagrams of left and right centering structures for laterally centering material and material mounts on a conveyor line. The centering device comprises a cylinder assembly and a baffle assembly. The cylinder assembly includes: the device comprises a telescopic cylinder, a swing rod, a connecting shaft, a rotary rod and a connecting rod. The baffle assembly includes: connecting plate, guide bar, axle sleeve, baffle, spring, bracing piece. A piston rod is arranged in the cylinder and is connected with the swing rod through the Y-shaped connector; the swing rod is connected with one end of the connecting shaft through a key connection; the other end of the connecting shaft is connected with the rotary rod in a key connection mode; the two ends of the rotary rod are respectively connected with the connecting rods fixed on the connecting plates through Y-shaped connectors;

The connecting plate and the baffle are respectively provided with a supporting hole; the two ends of the supporting rod are fixed at the supporting hole, the two ends of the supporting rod are fixed at the supporting hole

The connecting plate is connected with the baffle through the supporting rod; the connecting plate is also connected with the baffle through the supporting rod; the spring is sleeved on the supporting rod.

In the centering device, a piston rod in the air cylinder is connected with the swing rod through a Y-shaped connector, one end of the swing rod is fixed inside the Y-shaped connector, and the swing rod can only reciprocate in one plane due to the structural characteristics of the Y-shaped connector. When the piston rod stretches, the length of the swing rod is fixed, so that the swing rod reciprocates along with the stretching of the piston rod in a specific plane. The other end of the swing rod is provided with a connecting hole for key connection, and one end of the connecting shaft is in key connection with the swing rod at the connecting hole. The key connection realizes circumferential fixation between the shaft and the part on the shaft through the key to transmit motion and torque, so that the connecting shaft also performs circumferential motion along with the swing rod when the swing rod performs reciprocating motion.

The other end of the connecting shaft is connected with the rotary rod through a key connection, and the rotary rod also moves circumferentially along with the circumferential movement of the connecting shaft. Both ends of the rotary rod are connected with the connecting rod through Y-shaped connectors. The connecting rods are fixed on the connecting plates, and the connecting plates at two lateral sides are driven to be close to or far away from each other simultaneously by the movement of the connecting rods along with the rotary rods. The key-connected connecting holes are arranged in the center of the rotary rod so as to ensure symmetry and consistency of movement of the connecting plates at two lateral sides.

The connecting plates are provided with the hinged supports which are used for being connected with the connecting rods, and the hinged supports can restrict the movement in the horizontal/vertical directions, so that the arrangement of the hinged supports can ensure that the connecting plates at two sides only do the movement in the same direction. The connecting plate is also provided with a supporting hole, the baffle is connected with the connecting plate through a supporting rod, one end of the supporting rod penetrates through the supporting hole of the connecting plate and is provided with an open type shaft support, and the shaft support is used for being connected with a frame of the conveying line to play a role of fixed connection. The support rod is an elastic rod, and the spring is sleeved on the rod, so that the baffle plates at two sides can overcome the elastic force to do work when being pulled to a state of clamping materials and a material base by movement, and when the telescopic cylinder is not moving, the spring is gradually recovered, and the baffle plates are also gradually recovered to the initial position.

A pivot is likewise required during the movement of the telescopic cylinder, so that a hinge support is also provided at the end of the telescopic cylinder connected to the frame of the transport line, said hinge support being used for fixedly connecting the telescopic cylinder and also for limiting the direction of movement of the telescopic cylinder.

In order to ensure that the materials and the material bases cannot deviate on the roller conveying line, the centering device further comprises a guide rod. And a guide hole is arranged on the connecting plate, and a guide rod passes through the guide hole and is fixed at a bearing on the roller conveying line frame. And the baffle and the connecting plate are completed by sliding on the guide rods when being mutually close to/far away from each other, the guide rods are symmetrically arranged on the connecting plates on two sides so as to ensure that the connecting plates do not incline when sliding, and the centering positioning is accurate. In order to protect the guide rod, a shaft sleeve is sleeved at the joint of the guide rod and the guide hole.

The telescopic cylinder needs to be driven by the outside to move, and the piston rod of the telescopic cylinder is controlled by manpower to move in a transportation line with too low efficiency, so the centering device further comprises an electric control system to realize automatic centering. The electric control system comprises a controller and an inductive switch, wherein the inductive switch is arranged on a speed reduction position, a stop position and a connecting plate of the roller conveying line. When the inductive switch senses that the material and the material base are transported to the deceleration zone, a signal is fed back to the controller, and the controller receives the signal and then controls the cylinder to stretch out and draw back so as to drive the baffle to move, so that the material and the material base are transversely centered. The inductive switch on the connecting plate is used for sensing the position of the supporting rod, if the supporting rod reaches the preset position, the inductive switch feeds back signals to the controller, and the controller judges that the material and the material base are transversely centered and positioned. The inductive switch can realize the required functions, and the specific types are not limited herein.

In the process of transporting materials on a transportation line, the materials are prevented from tilting transversely or even dumping, and are prevented from tilting longitudinally or dumping, so that the problem that materials and material bases are separated and dumped due to inertia caused by the change of transportation speed is solved.

Referring to fig. 4 and 5, fig. 4 and 5 are structural diagrams of the front-rear centering structure. The centering structure comprises: a motor drive assembly and a baffle assembly; the motor driving assembly includes: the device comprises a driving motor, a steering box, a screw rod and a bearing with a seat; the baffle assembly includes: the device comprises a mounting plate, a lifting cylinder, a lifting connecting plate, a supporting rod and a baffle; the motor and the bearing with the seat are both arranged on the frame of the product conveying line; one end of the screw rod is connected with the steering box; the other end of the screw rod is connected with the bearing with the seat; the driving end of the motor is connected with the steering box;

The lifting cylinder is arranged on the mounting plate; a piston rod is arranged in the lifting cylinder; the extension end of the piston rod is connected with the connecting plate; the connecting plate and the baffle are provided with supporting holes; the two ends of the supporting rod 1 are fixed at the supporting holes through screws, and the lifting connecting plate is connected with the baffle 3 through the supporting rod 1.

In the centering device, the motor is used as a power source, and the safety of the motor needs to be ensured, so that the motor is mounted on the frame of the roller conveying line. The driving end of the motor is connected with a steering box, and a connecting channel for a screw rod is arranged in the steering box. The screw rod is driven to rotate through the rotation of the motor driving shaft, and the rotation directions of the two screw rods connected with the steering box are different, so that when the motor drives the screw rod to rotate, the baffle plates at the two longitudinal sides can simultaneously move towards the approaching direction or the separating direction.

The lifting cylinder is arranged on the mounting plate, a piston rod is arranged in the lifting cylinder, the extensible end of the piston rod is connected with the connecting plate, and the connecting plate is connected with the baffle through the supporting rod. The height of the connecting plate can be adjusted by controlling the piston rod in the lifting cylinder to stretch out and draw back, and then the height of the baffle plate is adjusted.

Support holes are formed in the connecting plate and the baffle plate, and the support rods penetrate through the support holes to achieve a connecting effect. One end of the supporting rod is provided with an open type shaft support, the open type shaft support is connected with a part such as a frame to play a role in connection and fixation, and the other end of the supporting rod is fixed in a supporting hole arranged on the baffle plate and fixed by a screw. The supporting rod is an elastic rod and is sleeved with a spring. So that the baffles at the two sides can overcome the elastic force to do work when being moved and pulled to a state of clamping the material and the material base.

In order to make the efficiency that the lead screw drives the mounting plate to move through the rotation higher, be equipped with the lead screw nut in the mounting hole junction of lead screw and mounting plate. The screw nut is fixed on the mounting plate through the screw, and the screw nut is in direct contact with the screw and is fixed on the mounting plate, when the driving end of the motor drives the screw to rotate in the state, the mounting plates on two longitudinal sides are driven to be close to or far away from more easily, and then the baffle plate can be contacted with the materials and the material base better.

The material and the material base are transported on the transportation line, in order to ensure the centering of the material and the material base on the transportation line, the width of the transportation line is ensured to be consistent and to be parallel to the horizontal plane on the basis of the basic transportation conditions. Therefore, the mounting plates are further provided with guide holes for accommodating the guide rods, and the guide Kong Yingdui of the mounting plates on the two sides is called as being arranged so as to ensure that the guide rods are parallel to the horizontal plane, and further ensure that the transportation line is parallel to the horizontal plane. The guide rod passes through the guide hole and is fixed on a belt seat bearing which is fixed on the frame 11 of the transportation line, and the arrangement of the belt seat bearing should also have symmetry to ensure that the guide rod is kept parallel to the horizontal plane. In order to protect the guide rod, a shaft sleeve is further arranged at the guide hole of the mounting plate, and plays a certain role in buffering and fixing, so that the guide rod is more stable, the loss of the guide rod can be reduced, and the stability of the whole device is improved.

In order to accurately control the motor and the lifting cylinder to move, the device also provides an electric control system for controlling the motor and the lifting cylinder. The electric control system comprises a controller and an inductive switch. The controller is electrically connected with the motor, the lifting cylinder and the inductive switch. The controller is configured to: and receiving signals fed back by the inductive switch, and controlling the lifting cylinder and the motor according to the signals, wherein the lifting cylinder and the motor are used for ensuring that materials on the product conveying line are kept in a longitudinally centered state.

The selection of the inductive switch is freely selected according to preset conditions triggered as required, so that the implementation function is not limited. The signal transmission modes of the inductive switch and the controller can be flexibly selected according to the field condition, and a wired transmission mode, such as an optical fiber mode, a cable mode and the like, can be adopted on the basis that the transmission line and the line of the centering device are not complex; when the circuit is complex or the inductive switch is in a position with serious abrasion, the inductive switch with a wireless transmission function can be used for carrying out information interaction with the controller, such as wifi, infrared and other modes. The controller can also select according to the field situation, for example, when the field signal interference is strong, select plc with strong anti-field interference capability; in the scene needing higher control precision, selecting a microprocessor such as a singlechip and the like.

According to the automatic centering device provided by the application, centering is carried out on materials and material bases on a conveying line in the longitudinal (front-back) and transverse (left-right) directions, so that the materials and the material bases are kept centered on the conveying line, and the materials and the material bases cannot fall down due to inertia when the conveying speed of the materials and the material bases entering a deceleration zone and a stopping zone changes. The two centering devices can be combined for use in practical application and are uniformly controlled by one electric control system, and the combined use of the two centering devices is described below with reference to the embodiment and fig. 6. The device of fig. 6 combines a left-right centering mechanism and a front-rear centering mechanism, and fig. 6 is a structural diagram of a centering device with longitudinal centering and transverse line centering functions.

In one embodiment, the refrigerator is transported and code-scanning registration is performed on the refrigerator during transportation. Firstly, selecting a proper base according to the model of the refrigerator, placing the refrigerator on the base, and entering a conveying line to start transportation. Before a series of operations such as reversing, code scanning and registering are performed on the refrigerator, the refrigerator enters a deceleration area of the conveying line first and finally reaches a stop area so as to prevent the refrigerator from falling off from the base due to sudden stop. The speed reduction position in the speed reduction area of the conveying line is provided with an inductive switch, when the inductive switch senses that the refrigerator is about to enter the speed reduction area, a signal is fed back to the controller in real time, the controller rises the front baffle after receiving the signal, and the front baffle is used for absorbing inertia of the base and the refrigerator to protect the refrigerator.

After the front baffle is lifted, the refrigerator and the refrigerator base continue to move forward in a decelerating manner until reaching a stopping area, and after the induction switch arranged in the stopping area senses that the refrigerator is transported to the stopping area, a signal is fed back to the controller in real time, and the controller receives the signal and then controls the lifting cylinder to lift the rear baffle. Simultaneously, the controller sends a control instruction to the motor, and the motor rotates to drive the screw rod to rotate so as to drive the front baffle and the rear baffle to approach the refrigerator simultaneously. The size of the base is slightly larger than that of the refrigerator, so that the contact between part of the baffle plates for centering the material base and the base is earlier than that of the part of baffle plates for centering the material, but the part of baffle plates for centering the material in the baffle plates can also overcome the elastic acting to continuously approach the refrigerator through the driving of the motor due to the fact that the support rods are elastic rods and are sleeved with springs.

When the baffle plate is used for locating the refrigerator in a play, the induction switch arranged on the lifting connecting plate senses the position of the supporting rod in real time, when the supporting rod reaches the preset position, the induction switch feeds back a signal to the controller, the controller receives the signal and judges that the longitudinal centering is finished, and the driving motor is controlled to reversely rotate so that the mounting plates on two sides are restored to the initial state. After the centering is completed, the controller also sends a control instruction to the telescopic cylinder so as to realize transverse centering.

And after receiving a control instruction of the controller, the telescopic cylinder stretches the piston rod to control the swing rod to move. The swing rod moves in an arc line with the point connected with the Y-shaped joint as the center of a circle under the limit of the Y-shaped joint and drives the connecting shaft. The connecting shaft drives the rotary rod to do circumferential motion due to the characteristic of being connected with the swing rod and the rotary rod by a key, the rotary rod drives the connecting rod to move through the Y-shaped connector, and the connecting shaft moves along with the rotary rod under the limit of the Y-shaped connector and drives the mounting plates and the baffle plates on two lateral sides to approach the refrigerator and the refrigerator base. The principle of centering the refrigerator by the baffle is the same as that of centering the refrigerator by the baffle, and the baffle finishes centering the refrigerator left and right. And the inductive switch arranged on the connecting plate feeds back a signal to the controller, and the controller receives the signal and then controls the telescopic cylinder to retract, so that the baffle is restored to an initial state.

In the embodiment, the baffle plates and the baffle plates are driven by a motor or an air cylinder, and the distance between the baffle plates is also characterized by being capable of being adjusted at will. Therefore, for materials and material bases with different sizes, the centering device provided by the embodiment can center the centering device so as to be suitable for materials with various sizes on a conveying line.

The above-provided detailed description is merely a few examples under the general inventive concept and does not limit the scope of the present application. Any other embodiments which are extended according to the solution of the application without inventive effort fall within the scope of protection of the application for a person skilled in the art.

Claims

1. An automatic centering device, comprising: the device comprises an electric control system (12), a cylinder assembly (21), a first baffle assembly, a motor driving assembly (31) and a second baffle assembly (32);

the cylinder assembly (21) comprises: telescopic cylinder (211), swing rod (212), connecting shaft (213) and rotary rod

(214) And a connecting rod (215); the first baffle assembly includes: the guide rod (7), the baffle (10) and the connecting plate (11);

The electric control system (12) is electrically connected with the telescopic cylinder (211); a piston rod (13) is arranged in the telescopic cylinder (211), and the piston rod (13) is hinged with the swing rod (212); one end of the connecting shaft (213) is hinged with the swing rod (212); the other end of the connecting shaft (213) is fixed in the middle of the rotary rod (214); both ends of the rotary rod (214) are respectively hinged with the connecting rod (215); the connecting rod (215) is fixed on the connecting plate (11); the connecting plate (11) is connected with the baffle (10); the connecting plate (11) is provided with a guide hole; the guide rod (7) passes through the guide hole;

The motor drive assembly (31) includes: a driving motor (311), a steering box (312) and a screw (313); the second baffle assembly includes: the guide rod (7), the mounting plate, the shaft sleeve (8), the baffle (10) and the connecting plate (11);

The electric control system (12) is electrically connected with the driving motor (311); the driving end of the driving motor (311) is connected with the steering box (312); the mounting plate is provided with a mounting hole; the lead screw (313) passes through the mounting hole and is connected with the steering box (312); the mounting plate is provided with a guide hole, the guide rod (7) passes through the guide hole, and the joint of the guide rod (7) and the guide hole is provided with the shaft sleeve (8); the baffle (10) is connected with the connecting plate (11);

The second baffle assembly further comprises: a lifting cylinder (321); the lifting cylinder (321) is arranged on the mounting plate; a piston rod (13) arranged in the lifting cylinder (321) is connected with the connecting plate (11); the electric control system (12) is electrically connected with the lifting cylinder (321);

The baffle (10) comprises: a material baffle and a base baffle; the distance between the material baffle and the connecting plate (11) is a first distance; the distance between the base baffle and the connecting plate (11) is a second distance; the first distance is not equal to the second distance.

2. The self-centering device of claim 1, wherein the first baffle assembly further comprises: a sleeve (8); the shaft sleeve is arranged at the joint of the guide rod (7) and the guide hole.

3. The self-centering device of claim 1, wherein the first baffle assembly further comprises: a support rod (5) and a spring (6); support holes are formed in the connecting plate (11) and the baffle (10); the supporting rod (5) passes through the supporting hole; the connecting plate (11) is connected with the baffle (10) through the supporting rod (5); the spring (6) is sleeved on the supporting rod (5); the two ends of the spring (6) are respectively connected with the baffle (10) and the connecting plate (11).

4. The automatic centering device according to claim 1, characterized in that the end of the piston rod (13) is of a Y-joint structure; the end part of the connecting rod is of a Y-shaped joint structure; the piston rod (13) is hinged with the swing rod (212) through the Y-shaped joint structure; both ends of the rotary rod (214) are hinged with the connecting rod (215) through the Y-shaped joint structures respectively.

5. The automatic centering device according to claim 1, characterized in that one end of the connecting shaft (213) is hinged to the swing rod (212) by means of a key connection; the other end of the connecting shaft (213) is hinged with the rotary rod (214) through key connection.

6. The automatic centering device of claim 1, further comprising: the motor drive assembly (31) further comprises a lead screw nut (314); the screw nut (314) is arranged at the joint of the screw (313) and the mounting hole.

7. The automatic centering device of claim 5, wherein the electronic control system (12) comprises: a controller and an inductive switch; the controller is electrically connected with the inductive switch; the inductive switch is arranged on the connecting plate (11); the controller is electrically connected with the telescopic cylinder (211); the controller is electrically connected with the driving motor (311);

The controller is configured to: receiving a signal fed back by the inductive switch and controlling the telescopic cylinder (211) to move according to the signal so as to perform centering operation; the lifting cylinder (321) and the driving motor (311) are also controlled according to the signals to perform centering operation.