CN111674943A

CN111674943A - Stacking machine

Info

Publication number: CN111674943A
Application number: CN202010425111.2A
Authority: CN
Inventors: 董强; 祝新荣; 师韵; 鲁雁敏
Original assignee: Hangzhou Dc Energy Equipment Co ltd
Current assignee: Hangzhou Dc Energy Equipment Co ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2020-09-18
Anticipated expiration: 2040-05-19
Also published as: CN111674943B

Abstract

The invention discloses a stacker crane which comprises a manipulator, wherein the manipulator is connected with a clamp, the clamp comprises a connecting plate and overturning clamping arms rotatably connected to two sides of the connecting plate, and an 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 formed in the overturning clamping arm, a contact block is connected in the sliding groove in a sliding manner, and a push rod is arranged on the contact block; the lower end of the overturning clamping arm is provided with a sliding cavity, a telescopic block is connected in the sliding cavity in a sliding manner, a first guide inclined plane is arranged on the telescopic block, and a second guide inclined plane matched with the first guide inclined plane is arranged at one end, close to the telescopic block, of the push rod; the case is being held by the flexible piece at the in-process of being mentioned, and the bottom of case can be held by the flexible piece, and upset arm lock need not to exert too big packing force to the case side like this, under both combined action of flexible piece and contact piece, can grasp the case reliably, has avoided leading to the case to be crushed because of the clamp force of upset arm lock is too big.

Description

Stacking machine

Technical Field

The invention relates to a stacking device, in particular to a stacker crane.

Background

A palletizer is a device for gripping and stacking boxes. The existing stacker crane comprises a manipulator, wherein a clamp is arranged on the manipulator, when the stacker crane is used, the clamp is moved to the position close to a box through the manipulator, and then the object is clamped by the clamp and stacked at a specific position. The case is before by the centre gripping, the case is generally directly put subaerial or stack on other cases, the bottom of case is with the up end laminating of ground or other cases, when centre gripping is carried out to the case, the bottom of case can't be held to the arm lock on the anchor clamps, the both sides of tight case of arm lock clamp on only can passing through the anchor clamps, the case is grabbed through the frictional force between arm lock and the case both sides, anchor clamps are when actually grabbing, in order to guarantee that the case is not dropping at the in-process of grabbing, the arm lock can apply great clamp force in order to guarantee sufficient frictional force to the case side, prevent that the case from dropping, lead to the case to be crushed easily like this.

Such as: the invention discloses a Chinese patent publication No. CN108639776A, and discloses a palletizing robot elastic clamp, which comprises a support plate connected with a mechanical arm, hydraulic cylinders positioned on two sides of the support plate and clamping plates positioned on two sides of the support plate, wherein the fixed ends of the hydraulic cylinders are hinged with the support plate, the movable ends of the hydraulic cylinders are hinged with the upper ends of the clamping plates, two sides of the bottom of the support plate are both connected with a plurality of horizontally arranged servo hydraulic cylinders, the middle parts of the clamping plates are hinged with one ends of the servo hydraulic cylinders, and the inner sides of the clamping plates are both connected with a; the mixed elastic plate comprises a rubber side plate, and a plurality of directional elastic mechanisms are arranged between the rubber side plate and the clamping plate. When the box is grabbed by the clamp, the clamp plates are utilized to clamp the two sides of the box, the box is grabbed through friction force between the clamp plates and the two sides of the box, the bottom of the box can not be supported by the clamp, the clamp plates can apply large clamping force to the side face of the box to guarantee enough friction force when actually grabbing the box so as to ensure that the box does not fall off in the grabbing process, and the box is prevented from falling, so that the box is easily crushed.

Disclosure of Invention

The invention aims to solve the problem that when an existing stacker crane grabs a box, as the bottom of the box is attached to the ground or the upper end surfaces of other boxes, when the box is clamped, clamping arms on a clamp cannot support the bottom of the box, only the two sides of the box can be clamped by the clamping arms on the clamp, the box is grabbed by the friction force between the clamping arms and the two sides of the box, and the clamping arms can apply larger pressing force to the side surfaces of the box to ensure enough friction force and prevent the box from falling off, so that the box is easily crushed, and the stacker crane can effectively solve the problem.

The purpose of the invention is realized by the following technical scheme: a stacker crane comprises a manipulator, wherein a clamp is connected to the manipulator, the clamp comprises a connecting plate and overturning clamping arms rotatably connected to two sides of the connecting plate, and an overturning driving device used for driving the overturning clamping arms to overturn is arranged between the connecting plate and the overturning clamping arms; a sliding groove is formed in the overturning clamping arm, a contact block is connected in the sliding groove in a sliding manner, and a push rod is arranged on the contact block; the lower end of the overturning clamping arm is provided with a sliding cavity, a telescopic block is connected in the sliding cavity in a sliding manner, a first guide inclined plane is arranged on the telescopic block, and a second guide inclined plane matched with the first guide inclined plane is arranged at one end, close to the telescopic block, of the push rod; a first reset spring is arranged between the contact block and one end of the sliding groove, and a second reset spring is arranged between the telescopic block and one end of the sliding cavity.

In the invention, before the clamp is used for grabbing, the front end of the telescopic block does not extend out of the sliding cavity, when the clamp grabs the box, the two sides of the box are clamped by the overturning clamping arms, when the box is clamped by the overturning clamping arms, the contact block is tightly pressed with the side surface of the box, the bottom of the box is positioned above the telescopic block, then the box is lifted upwards by the mechanical arm, in the process that the box is lifted upwards and leaves the bottom surface, the contact block is driven to move downwards under the action of the gravity of the box, when the contact block moves downwards, the push rod is driven to move downwards, when the push rod moves downwards, the telescopic block moves towards one side of the box under the action of the first guide inclined surface and the second guide inclined surface, so that the front end of the telescopic block extends out of the sliding cavity, the bottom of the box can be supported by the telescopic block, thus, the overturning clamping arms do not need to exert too large pressing, can grasp the case reliably, avoid the case to drop at the in-process of snatching, also avoided leading to the case to be crushed because of the clamp force of arm lock is too big simultaneously. When the box is stacked at a designated position, the turnover clamping arm turns outwards and loosens the box, and the contact block and the telescopic block reset under the action of the first return spring and the second return spring.

Preferably, the overturning driving device is an overturning driving hydraulic cylinder, one end of the overturning driving hydraulic cylinder is rotatably connected to the connecting plate, and the other end of the overturning driving hydraulic cylinder is rotatably connected to the overturning clamping arm.

Preferably, the overturning driving device is an electric push rod, one end of the electric push rod is rotatably connected to the connecting plate, and the other end of the electric push rod is rotatably connected to the overturning clamping arm.

Preferably, the sliding groove is provided with a guide rod, the contact block is provided with a guide hole, and the guide rod penetrates through the guide hole. The contact block slides axially along the guide bar.

Preferably, the first guide slope and the second guide slope are parallel.

Preferably, a cushion layer is arranged on one side of the contact block close to the clamped object. The bed course can make contact piece and case side laminate better, increases the frictional force between the two.

Preferably, the cushion layer is made of rubber.

The invention has the beneficial effects that: in the invention, the bottom of the box can be supported by the telescopic block in the lifting process of the box, so that the box can be reliably grasped under the combined action of the telescopic block and the contact block without applying too large pressing force to the side surface of the box by the turnover clamping arm, and the box is prevented from being crushed due to too large clamping force of the turnover clamping arm.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view of the base.

Fig. 3 is a partial cross-sectional view of the clip.

Fig. 4 is an enlarged view of a portion a in fig. 3.

Figure 5 is a front view of the flip arm assembly.

In the figure: 1. base, 2, manipulator, 3, anchor clamps, 4, urceolus, 5, lift seat, 6, hydraulic cylinder, 7, location screw hole, 8, positioning bolt, 9, connecting plate, 10, upset arm lock, 11, upset drive hydraulic cylinder, 12, spout, 13, contact block, 14, bed course, 15, push rod, 16, sliding chamber, 17, flexible piece, 18, first reset spring, 19, second reset spring, 20, guide bar.

Detailed Description

The invention is further described by the following detailed description in conjunction with the accompanying drawings.

Example 1:

as shown in fig. 1 to 5, the stacker crane comprises a base 1 capable of being adjusted in a lifting mode, wherein a manipulator 2 is arranged on the base 1, and a clamp 3 is connected to the manipulator 2. The robot 2 is prior art. The base includes urceolus 4, and the upper end of urceolus 4 is uncovered. A vertically movable lifting base 5 is provided in the outer cylinder 4. A lifting hydraulic cylinder 6 for driving the lifting seat 5 to move is arranged in the outer cylinder. The side of lift seat is provided with a plurality of location screw hole 7, and location screw hole 7 arranges along vertical direction. The outer cylinder 4 is connected with a positioning bolt 8, and the front end of the positioning bolt 8 is connected in one positioning threaded hole 7. The manipulator 2 is mounted on a lifting base 5. When the height of the base is adjusted, the positioning bolt is firstly screwed out, then the lifting seat is driven to lift through the lifting hydraulic cylinder, the lifting seat is adjusted to a proper height, and then the positioning bolt is screwed into the corresponding positioning threaded hole, so that the height of the base is adjusted.

The clamp 3 comprises a connecting plate 9 and turnover clamping arms 10 which are rotatably connected to two sides of the connecting plate 9, and the connecting plate 9 is connected with the manipulator 2. Be provided with the upset drive arrangement who is used for driving upset arm lock 10 upset between connecting plate 9 and upset arm lock 10, in this embodiment, upset drive arrangement is upset drive hydraulic cylinder 11, and the one end of upset drive hydraulic cylinder 11 rotates to be connected on connecting plate 9, and the other end rotates to be connected on upset arm lock 10. The turnover clamping arm 10 is provided with a sliding groove 12, and a contact block 13 is connected in the sliding groove 12 in a sliding manner. The contact block 13 has a rectangular parallelepiped structure. The sliding groove 12 is provided with a guide rod 20, the contact block 13 is provided with a guide hole, and the guide rod 20 penetrates through the guide hole. The contact block 13 moves in the axial direction of the guide rod 20. The contact block 13 is provided with a cushion layer 14 on one side close to the clamped object, and the cushion layer 14 is made of rubber. The lower end of the contact block 13 is provided with a push rod 15. The lower end of the turnover clamping arm 10 is provided with a sliding cavity 16, and the open end of the sliding cavity 16 faces to one side of the clamped object. The sliding chamber 16 is located below the contact block 13. A telescopic block 17 is connected in a sliding way in the sliding cavity 16. The lower end of the push rod 15 extends into the slide chamber 16. The telescopic block is provided with a first guide inclined plane, and the lower end of the push rod 15 is provided with a second guide inclined plane matched with the first guide inclined plane. The first guide inclined plane is parallel to the second guide inclined plane. The first guide ramp is in contact with the second guide. A first return spring 18 is arranged between the contact block 13 and one end of the sliding chute 12, and a second return spring 19 is arranged between the telescopic block 17 and one end of the sliding cavity 16.

In the invention, before the clamp is used for grabbing, the front end of the telescopic block does not extend out of the sliding cavity, when the clamp grabs the box, the two sides of the box are clamped by the overturning clamping arms, when the box is clamped by the overturning clamping arms, the contact block is tightly pressed with the side surface of the box, the bottom of the box is positioned above the telescopic block, then the box is lifted upwards by the mechanical arm, in the process that the box is lifted upwards and leaves the bottom surface, the contact block is driven to move downwards under the action of the gravity of the box, when the contact block moves downwards, the push rod is driven to move downwards, when the push rod moves downwards, the telescopic block moves towards one side of the box under the action of the first guide inclined surface and the second guide inclined surface, so that the front end of the telescopic block extends out of the sliding cavity, the bottom of the box can be supported by the telescopic block, thus, the overturning clamping arms do not need to exert too large pressing, can grasp the case reliably, avoid the case to drop at the in-process of snatching, also avoided leading to the case to be crushed because of the clamp force of arm lock is too big simultaneously. When the box is stacked at a designated position, the turnover clamping arm turns outwards and loosens the box, and the contact block and the telescopic block reset under the action of the first return spring and the second return spring. The installation height of the manipulator can be adjusted through the lifting of the base, so that the manipulator is suitable for different working occasions.

Example 2:

example 2 differs from example 1 in that: in embodiment 2, the turnover driving device is an electric push rod, one end of the electric push rod is rotatably connected to the connecting plate and rotatably connected to the turnover clamping arm, and the rest of the structure is the same as that of embodiment 1.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A hacking machine which characterized in that: the manipulator is connected with a clamp, the clamp comprises a connecting plate and overturning clamping arms rotatably connected to two sides of the connecting plate, and an 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 formed in the overturning clamping arm, a contact block is connected in the sliding groove in a sliding manner, and a push rod is arranged on the contact block; the lower end of the overturning clamping arm is provided with a sliding cavity, a telescopic block is connected in the sliding cavity in a sliding manner, a first guide inclined plane is arranged on the telescopic block, and a second guide inclined plane matched with the first guide inclined plane is arranged at one end, close to the telescopic block, of the push rod; a first reset spring is arranged between the contact block and one end of the sliding groove, and a second reset spring is arranged between the telescopic block and one end of the sliding cavity.

2. A palletiser according to claim 1, wherein the flip drive means is a flip drive hydraulic cylinder, one end of which is pivotally connected to the connector plate and the other end of which is pivotally connected to the flip clamp arm.

3. A palletiser according to claim 1, wherein the flip drive means is an electrical push rod pivotally connected at one end to the connector plate and at the other end to the flip arm.

4. A palletiser according to claim 1 wherein the chute has a guide bar disposed therein and the contact block has a guide aperture therein through which the guide bar passes.

5. A palletiser according to claim 1, wherein the first and second guide ramps are parallel.

6. A palletiser according to claim 1, wherein the contact block is provided with a cushion on a side thereof adjacent the gripped object.

7. A palletiser according to claim 6, wherein the pad is made of rubber.