A material flipping mechanism for a flow line

Abstract

The application discloses a material overturning mechanism for a pipeline and relates to the technical field of automatic production equipment. The application comprises a base, a clamping arm assembly for overturning material and a linear module for driving the clamping arm assembly to move towards each other or in the opposite direction. The clamping arm assembly comprises a pair of clamping arms for clamping material from both sides and an overturning motor for driving the clamping arms to swing. The linear module is installed on the base. The linear module comprises two symmetrical bottom plates, and the clamping arm assembly is symmetrically installed on the two bottom plates. The two bottom plates can move towards each other or in the opposite direction, so as to control the distance between the pair of clamping arms and adapt to materials of different widths. The application drives a rotary arm by means of the overturning motor, drives a swing arm by means of the rotary arm and drives the multi-link structure of the clamping arm by means of the swing arm. When the overturning motor rotates at a constant speed in one direction, the clamping arm swings back and forth, so as to overturn the material.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of automatic production equipment, and particularly relates to a material overturning mechanism for a flow line. BACKGROUND

[0002] In the production process of a refrigerator, multiple 90-degree overturning needs to be performed to complete the production and assembly of each surface of the refrigerator. Currently, the 90-degree overturning mechanism commonly used on the flow line is mostly realized through a mechanical arm. The mechanical arm usually adopts a combination of linear motion and overturning motion to realize the overturning function, and each motion module mostly adopts separate power and electrical control. The motor needs to be frequently started and stopped and forward and reverse rotated to realize the overturning of the clamping arm.

[0003] For example, the Chinese patent with the publication number CN111674943B discloses a stacking machine, which comprises a mechanical hand, and a clamp connected to the mechanical hand. The clamp comprises a connecting plate and overturning clamping arms rotatably connected to the two sides of the connecting plate. A overturning driving device for driving the overturning clamping arms to overturn is arranged between the connecting plate and the overturning clamping arms. A sliding groove is arranged on the overturning clamping arm, and a contact block is slidably connected in the sliding groove. A push rod is arranged on the contact block. The lower end of the overturning clamping arm is provided with a sliding cavity, and a telescopic block is slidably connected in the sliding cavity. A first guide inclined surface is arranged on the telescopic block. An end of the push rod close to the telescopic block is provided with a second guide inclined surface matched with the first guide inclined surface, so as to realize the overturning of the material after being lifted.

[0004] However, the following problems exist in the clamping and overturning process:

[0005] On the one hand, the frequent starting and stopping and forward and reverse rotation of the motor cause the motor to wear out quickly, affecting the service life of the motor. At the same time, due to the limitation of the sensing speed and sensing range of the proximity switch, the rotation speed cannot be set too high, and the overturning rhythm is limited.

[0006] On the other hand, two sensors are respectively arranged at the two limit positions of the clamping arm in this way, which are used to control the deceleration and position accuracy before reaching the position. If the rotation speed of the clamping arm is too fast or the material is too heavy, the clamping arm will shake after reaching the position, the sensor reading will be wrong, and the equipment will malfunction and damage the material. SUMMARY

[0007] The purpose of the present application is to provide a material overturning mechanism for a flow line. By arranging a clamping arm assembly driven by a overturning motor, the clamping arm assembly adopts a multi-link structure driven by the overturning motor, which can realize the reciprocating swing of the clamping arm when the overturning motor rotates at a uniform speed in one direction, and overturn the material. The problem that the existing overturning mechanism needs the motor to be frequently started and stopped and forward and reverse rotated during overturning, which causes the motor to wear out quickly, affects the service life of the motor, and the equipment is prone to malfunction and damage to the material is solved.

[0008] To solve the above technical problems, the present application is realized by the following technical scheme:

[0009] The application discloses a material overturning mechanism for a pipeline, which comprises a base, a clamping arm assembly for overturning a material and a linear module for driving the clamping arm assembly to move towards each other or in a reverse direction.

[0010] As a preferred technical scheme of the application, the clamping arm assembly further comprises a pair of support plates and a swing arm for driving the clamping arm to swing, one end of the clamping arm is hingedly connected to the upper end of the support plate, one end of the swing arm is hingedly connected to the lower end of the support plate, the other end of the swing arm is slidably connected to a surface of the clamping arm, and the overturning motor is in transmission connection with the swing arm and used for driving the swing arm to swing.

[0011] As a preferred technical scheme of the application, the output shaft of the overturning motor is fixedly connected with a rotary arm, one end of the rotary arm is rotatably connected with a first bearing through a pin shaft, a first sliding groove is formed in a surface of the swing arm, and the overturning motor drives the first bearing to reciprocatingly slide along the first sliding groove through the rotary arm, so that the swing arm swings.

[0012] As a preferred technical scheme of the application, the upper end of the swing arm is rotatably connected with a second bearing through a pin shaft, a second sliding groove is formed in a surface of the clamping arm, and the swing arm drives the second bearing to reciprocatingly slide along the second sliding groove, so that the clamping arm swings.

[0013] As a preferred technical scheme of the application, the overturning motor is fixedly installed on the upper surface of the base plate, a slot is formed in the base plate, one side surface of the support plate is fixedly connected with the inner wall of the slot, and the lower end of the support plate penetrates through the slot.

[0014] As a preferred technical scheme of the application, a clearance hole is formed in a surface of the support plate, and the output shaft of the overturning motor is fixedly connected with the rotary arm after penetrating through the clearance hole.

[0015] As a preferred technical scheme of the application, the overturning motor keeps constant rotating speed.

[0016] As a preferred technical scheme of the application, a plurality of suction cups are fixedly installed on the upper end of the clamping arm and used for adsorbing on the surface of the material, so that the stability of the clamping arm in clamping the material is improved.

[0017] As a preferred technical scheme of the present application, the lower surface of the bottom plate is fixedly connected with a plurality of sliding blocks, the upper surface of the base is fixedly installed with sliding rails, and the sliding blocks are in sliding connection with the sliding rails.

[0018] As a preferred technical scheme of the present application, the linear module further comprises a driving motor and a screw rod for driving the bottom plate to move, the screw rod is arranged in parallel with the sliding rails, the driving motor is in transmission connection with the screw rod, the lower surface of the bottom plate is fixedly installed with a screw rod sleeve, and the screw rod sleeve is in engagement with the screw rod, so as to drive the bottom plate to run along the sliding rails.

[0019] The present application has the following beneficial effects:

[0020] 1. The present application is provided with the clamping arm assembly, the clamping arm assembly is driven by the overturning motor to rotate the arm, the arm drives the swing arm, and the swing arm drives the multi-link structure of the clamping arm, so that the clamping arm swings back and forth when the overturning motor rotates at a constant speed in one direction, and the material is overturned.

[0021] 2. The clamping arm assembly comprises an overturning motor, a rotating arm, a swing arm and a clamping arm, the overturning motor drives the first bearing to slide back and forth along the first sliding groove of the swing arm through the rotating arm, so as to realize the swing arm swinging back and forth, and the swing arm drives the second bearing to slide back and forth along the second sliding groove of the clamping arm, so as to realize the clamping arm swinging back and forth with a larger amplitude. The structure makes the rotating rod rotate through the same angle when the clamping arm approaches the two end limit positions, and the angle of the clamping arm is smaller and smaller. That is, when the mechanism approaches the limit position at both ends, the clamping arm has an automatic deceleration function. That is, during the uniform rotation of the overturning motor, the rotation speed of the clamping arm during the overturning of the clamped material is relatively fast, while the rotation speed of the clamping arm when the material is put down or clamped is relatively slow. Therefore, the number of sensors is reduced, the instability of the electric control is reduced, and the whole mechanism is stable and reliable.

[0022] Of course, any product implementing the present application does not necessarily need to achieve all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0024] Figure 1 A structural schematic view of a material overturning mechanism for a flow line of the present application;

[0025] Figure 2 A Figure 1 A local enlarged view of position A in FIG. 6;

[0026] Figure 3 is a front view of the overturning mechanism;

[0027] Figure 4 is a front view of the overturning mechanism; Figure 3 is a sectional view along A-A;

[0028] Figure 5 is a structural schematic view of the base part;

[0029] Figure 6 is a structural schematic view of the material overturning mechanism for the assembly line;

[0030] Figure 7 is a schematic diagram of the movement process of the clamping arm assembly;

[0031] In the drawings, the components represented by the respective reference numerals are listed as follows:

[0032] 100 - base, 200 - linear module, 300 - clamping arm assembly, 1 - clamping arm, 101 - second sliding groove, 2 - swing arm, 201 - first sliding groove, 202 - second bearing, 3 - rotating arm, 301 - first bearing, 4 - overturning motor, 5 - support plate, 501 - clearance hole, 6 - bottom plate, 601 - slot, 602 - screw sleeve, 7 - sliding block, 8 - sliding rail, 9 - driving motor, 10 - screw rod, 11 - suction cup. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0034] In the description of the present application, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery" and the like indicate the orientation or positional relationship, which are only for the convenience of describing the present application and simplifying 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 cannot be understood as a limitation of the present application.

[0035] Referring to Figure 1 As shown in the drawings, the embodiment provides a material overturning mechanism for an assembly line, which comprises a base 100, a linear module 200 arranged on the base, and a clamping arm assembly 300 arranged on the linear module 200.

[0036] Referring to Figures 1-4As shown, the holding and clamping arm assembly 300 includes a pair of clamping arms 1 for clamping the material from both sides, a swing arm 2 for driving the clamping arms 1 to swing, a pair of support plates 5 and a turnover motor 4. The lower end of the clamping arm 1 is hinged to the upper end of the support plate 5, and the lower end of the swing arm 2 is hinged to the lower end of the support plate 5. One surface of the support plate 5 is provided with a clearance hole 501, and the output shaft of the turnover motor 4 is fixedly connected with a rotating arm 3 after passing through the clearance hole 501. One end of the rotating arm 3 is rotatably connected with a first bearing 301 through a pin shaft, one surface of the swing arm 2 is provided with a first sliding groove 201, and the turnover motor 4 drives the first bearing 301 to slide back and forth along the first sliding groove 201 through the rotating arm 3, so as to realize the swing of the swing arm 2. The upper end of the swing arm 2 is rotatably connected with a second bearing 202 through a pin shaft, and one surface of the clamping arm 1 is provided with a second sliding groove 101. The swing arm 2 drives the second bearing 202 to slide back and forth along the second sliding groove 101, so as to realize the swing of the clamping arm 1.

[0037] As shown in Figure 2 and Figure 5 As shown, the linear module 200 is installed on the base 100, which includes two symmetrically arranged bottom plates 6 and a driving motor 9 and a lead screw 10 for driving the bottom plates 6 to move. The holding and clamping arm assembly 300 is symmetrically installed on the two bottom plates 6, and the specific installation structure is that the turnover motor 4 is fixedly installed on the upper surface of the bottom plate 6, the bottom plate 6 is provided with a slot 601, one side surface of the support plate 5 is fixedly connected with the inner wall of the slot 601, and the lower end of the support plate 5 passes through the slot 601, so that the overall structure is more compact and the installation area of the mechanism is reduced. The lower surface of each bottom plate 6 is fixedly connected with a plurality of sliding blocks 7, the upper surface of the base 100 is fixedly installed with a sliding rail 8, and the sliding block 7 is slidably connected with the sliding rail 8. The lead screw 10 is arranged in parallel with the sliding rail 8, and the output shaft of the driving motor 9 is installed with a steering box for driving the two lead screws 10 to move in different directions. The lower surface of the bottom plate 6 is fixedly installed with a lead screw sleeve 602, and the lead screw sleeve 601 is engaged with the lead screw 10. The movement of the two bottom plates 6 towards or away from each other is realized, so as to control the distance between the pair of clamping arms 1, and to adapt to materials of different widths.

[0038] In addition, the upper end of the clamping arm 1 is fixedly installed with a plurality of suction cups 11 for adsorbing on the surface of the material, so as to improve the stability of the lifting and clamping turnover process of the material and avoid the material from falling.

[0039] As shown in Figure 6 When the turnover mechanism operates, the following steps are included:

[0040] S1: The material is conveyed to the designated position at the end of the front line, and the material model scanning is completed during the conveying process. The driving motor 9 drives the two bottom plates 6 to slide according to the scanned material model, and the bottom plates 6 drive the holding and clamping arm assembly 300 to move, so as to adjust the distance between the two clamping arms 1 and make them suitable for the material of this model.

[0041] S2: the rotating motor 4 runs at a constant speed, the clamping arm 1 is rotated by the rotating arm 3 and the swing arm 2, the clamping arm 1 rotates to the both sides of the material, and the suction cup 11 sucks the material from both sides.

[0042] S3: the rotating motor 4 continues to rotate, the clamping arm 1 clamps the material and turns 90°.

[0043] S4: the clamping arm 1 transports the turned material to the designated position of the rear line, releases the suction cup 11, and places the material on the rear line.

[0044] S5: the rotating motor 4 continues to rotate, drives the clamping arm 1 to swing back to the front line, clamps the next material, and reciprocates.

[0045] Please refer to Figure 7 As shown, the rotating speed of the rotating motor 4 is constant during operation, the swing angle of the clamping arm 1 is smaller when it is closer to the limit position, therefore, the mechanism has the effect of self-acceleration and deceleration when it is away from and close to the limit position, that is, the rotating speed of the clamping arm 1 is faster during the process of clamping and turning the material, and the rotating speed of the clamping arm 1 is slower when the material is placed or clamped, so that the mechanism runs more stably.

[0046] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0047] The preferred embodiments of the present application disclosed above are only used to help explain the present application. The preferred embodiments do not describe all the details, nor limit the present application to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of the present specification. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can well understand and utilize the present application. The present application is limited only by the claims and their full scope and equivalents.

Claims

1. A material turning mechanism for an assembly line, characterized in that, include: Base (100), and A clamping arm assembly (300) for driving the material to flip, the clamping arm assembly (300) includes a pair of clamping arms (1) for clamping the material from both sides and a flipping motor (4) for driving the clamping arms (1) to swing. A linear module (200) for driving the clamping arm assembly (300) to move in opposite directions or in the opposite direction. The linear module (200) is mounted on a base (100). The linear module (200) includes two symmetrically arranged base plates (6). The clamping arm assembly (300) is symmetrically mounted on the two base plates (6). The two base plates (6) can move in opposite directions or in the opposite direction, thereby controlling the distance between a pair of clamping arms (1) to adapt to materials of different widths. The clamping arm assembly (300) also includes a pair of support plates (5) and a swing arm (2) for driving the clamping arm (1) to swing. One end of the clamping arm (1) is hinged to the upper end of the support plate (5), one end of the swing arm (2) is hinged to the lower end of the support plate (5), and the other end of the swing arm (2) is slidably connected to a surface of the clamping arm (1). The flipping motor (4) is drivenly connected to the swing arm (2) for driving the swing arm (2) to swing. The output shaft of the flip motor (4) is fixedly connected to a rotary arm (3). One end of the rotary arm (3) is rotatably connected to a first bearing (301) via a pin. A first sliding groove (201) is opened on one surface of the swing arm (2). The flip motor (4) drives the first bearing (301) to slide back and forth along the first sliding groove (201) via the rotary arm (3) to realize the swing of the swing arm (2). The upper end of the swing arm (2) is rotatably connected to the second bearing (202) by a pin. A second sliding groove (101) is opened on one surface of the clamping arm (1). The swing arm (2) drives the second bearing (202) to slide back and forth along the second sliding groove (101) to realize the swing of the clamping arm (1). A plurality of sliders (7) are fixedly connected to the lower surface of the base plate (6), and a slide rail (8) is fixedly installed on the upper surface of the base (100). The sliders (7) are slidably connected to the slide rail (8).

2. The material turning mechanism for a production line according to claim 1, characterized in that, The flipping motor (4) is fixedly installed on the upper surface of the base plate (6). The base plate (6) has a slot (601). One side of the support plate (5) is fixedly connected to the inner wall of the slot (601). The lower end of the support plate (5) passes through the slot (601).

3. A material turning mechanism for an assembly line according to claim 2, characterized in that, The support plate (5) has a clearance hole (501) on one surface, and the output shaft of the flipping motor (4) passes through the clearance hole (501) and is fixedly connected to the rotating arm (3).

4. A material turning mechanism for an assembly line according to claim 1, characterized in that, The flip motor (4) operates at a constant speed.

5. A material turning mechanism for an assembly line according to claim 1, characterized in that, The upper end of the clamping arm (1) is fixedly equipped with several suction cups (11) for adsorbing onto the surface of the material.

6. A material turning mechanism for an assembly line according to claim 1, characterized in that, The linear module (200) also includes a drive motor (9) and a lead screw (10) for driving the base plate (6) to move. The lead screw (10) is arranged parallel to the slide rail (8). The drive motor (9) is connected to the lead screw (10) in a transmission manner. A lead screw sleeve (602) is fixedly installed on the lower surface of the base plate (6). The lead screw sleeve (602) meshes with the lead screw (10).

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