CN115108233B

CN115108233B - Assembly line backing plate return mechanism and assembly line

Info

Publication number: CN115108233B
Application number: CN202210862345.2A
Authority: CN
Inventors: 韩涛; 魏明伟; 来辉煌; 陈红梅; 郑辉; 李军; 王继杰; 叶忠举; 杨杰; 刘芳亮
Original assignee: Dongfeng Automobile Co Ltd
Current assignee: Dongfeng Automobile Co Ltd
Priority date: 2022-07-20
Filing date: 2022-07-20
Publication date: 2023-06-27
Anticipated expiration: 2042-07-20
Also published as: CN115108233A

Abstract

The invention belongs to the technical field of product line logistics, and discloses an assembly line backing plate returning mechanism and an assembly line using the same. The assembly line automatically slides back to the initial end of the production line in an unpowered state through the slide way, the cushion plates pass through the door in and out of the production line one by one conveniently through the set blocking pin, and the condition that the normal opening and closing of the door in and out of the production line are affected due to the fact that the return cushion plates are partially ridden on the door is avoided. The assembly line is suitable for various assembly lines with access doors.

Description

Assembly line backing plate return mechanism and assembly line

Technical Field

The invention belongs to the technical field of product line logistics, and particularly discloses an assembly line backing plate return mechanism and an assembly line using the same.

Background

In order to meet market demands, the yield of light trucks is increased year by year, vehicle types are increasingly abundant, an electric system is also increasingly complex, and all vehicle types need to be preassembled with various wire harnesses before entering chassis wires in order to facilitate the installation of subsequent procedures.

Before preassembling, in order to prevent the surface paint of the frame from being scratched in the moving process, a worker needs to drop the frame on a backing plate of a preassembling line, and after preassembling is finished, the frame is pushed to the next parking space through a roller track until the whole preassembling line is full. After the preassembled frame is put on line, the backing plate below the frame is returned to the initial position for standby.

At present, the backing plate returning scheme of each commercial automobile manufacturer has 3 types:

scheme 1: and (5) carrying manually. The workers (left and right sides, two people in total) preassembled the wire bundles walk to the tail end of the preassembled line, and take the idle backing plate back to the head end for use, so that the labor intensity of the workers is increased.

Scheme 2: and (5) carrying in a centralized way. And storing backing plates 2 to 3 times, intensively storing the backing plates on a small tail flatbed after the backing plates are used, and then selecting a machine by a tail person to push a loop for standby. The labor intensity is reduced compared with the scheme 1, but the number of the base plates is increased, and the occupied space is increased;

scheme 3: and (5) carrying out electric automation. Because the left and right sides of preassembly line all installs the door that personnel got in and out near first, end both ends department, when the backing plate returned, only can start after confirming whether the passageway is feasible through the inductor, and the structure is complicated, and is with high costs.

The design of the unpowered backing plate return mechanism can conveniently control the start and stop of the return movement when the backing plate returns to the personnel inlet and outlet of the production line, and is a technical problem to be solved currently.

Disclosure of Invention

In order to solve the problems in the background technology, the invention provides an assembly line backing plate return mechanism, which comprises the following specific technical scheme:

the assembly line backing plate return mechanism comprises a buffer blocking device arranged at the upstream end part of an assembly line, a door arranged on the assembly line, and sliding ways which are arranged at two sides of the assembly line and incline upwards along the circulation direction of an assembly piece, wherein the slopes of the sliding ways at two sides of the assembly line are equal; the sliding way is divided into three sections by taking the left and right frames of the door as boundaries, the three sections are respectively an upstream sliding way, a door upper sliding way and a downstream sliding way along the circulation direction of the assembly piece, the door upper sliding way is arranged on the door, a door end stop pin capable of limiting the lifting state of the pin head relative to the sliding surface is arranged at the near door end on the downstream sliding way, and a single-pad stop pin capable of limiting the lifting state of the pin head relative to the sliding surface is arranged at the circulation distance of a pad plate at the downstream direction of the assembly line.

The design enables the backing plate to automatically slide back to the initial end of the assembly line after the logistics transportation is completed, reduces the labor intensity of workers, and can conveniently control the backing plates to pass one by one at the inlet and outlet of the assembly line through the arrangement of the door end stop pin and the single backing plate stop pin, so that the backing plates are prevented from being clamped on the door.

Further, the device also comprises a long shaft with the length of 1 backing plate, wherein the long shaft is arranged below a sliding surface in the downstream slideway, can rotate around the axis of the long shaft and is parallel to the sliding direction of the backing plate on the slideway, and the door end stop pin and the single backing plate stop pin are radially fixed at two ends of the long shaft and form a 90-degree included angle on a plane perpendicular to the long shaft.

The linkage of the door end stop pin and the single base plate stop pin is ensured, and the stop pins at the two ends of the long shaft can be opened and closed only by one action, so that the base plates can slide one by one.

Further, a counterweight rod is arranged in the direction that the pin top of the door end stop pin rotates 180 degrees around the axis of the long shaft, the door is hinged with the supporting leg of the assembly line and is opened in the downstream direction of the assembly line, and a horizontal supporting rod capable of lifting the counterweight rod to a horizontal state when rotating along with the door is fixed on the outer side of the upper sliding rail of the door.

Therefore, the door opening and closing actions can change the state of the stop pin through the lever, so that the labor is saved, the misoperation is prevented, and the operation safety is ensured.

In addition, be equipped with the second spacing below the low reaches slide for inject the major axis is equipped with the position of single backing plate detent one end, the position satisfies: when the pin top of the single-shim plate stop pin is upward, the pin top is located below the sliding contact surface of the downstream slideway.

The invention also provides an assembly line provided with one or more of the assembly line pallet return mechanisms.

Drawings

FIG. 1 is a schematic view of the relative positions of a door end stop, a single pad stop, a long shaft and a counterweight rod in an embodiment of the invention;

FIG. 2 is a schematic diagram of a single-sided track arrangement of an assembly line in accordance with an embodiment of the present invention;

FIG. 3 is a schematic diagram of a two-sided track arrangement of an assembly line in accordance with an embodiment of the present invention;

in the figure: 1. a slideway; 1.1 upstream slideway; 1.2 door upper slideway; 1.3 downstream slides; 2. a buffer blocking device; 3. a door; 4. a door end stop pin; 5. a single backing plate stop pin; 6. a long axis; 7. a weight bar; 8. a horizontal supporting rod; 9. a shifting fork is shifted.

Detailed Description

The present invention will be described with reference to the drawings and the embodiments thereof, in order to make the objects, technical solutions and advantages of the present invention more apparent. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. Based on this embodiment, all other embodiments that a person of ordinary skill in the art would obtain without making any inventive effort are within the scope of the invention.

As shown in fig. 1 to 3, an assembly line pallet returning mechanism includes a buffering blocking device 2 provided at an upstream end portion of an assembly line, a door 3 provided on the assembly line, and a chute 1 installed at both sides of the assembly line to be inclined upward in a direction of circulation of an assembly, the chute 1 having equal slopes at both sides of the assembly line.

The slideway 1 is divided into three parts by taking the left and right frames of the door 3 as boundaries, and is respectively an upstream slideway 1.1, an upper door slideway 1.2 and a downstream slideway 1.3 along the circulation direction of the assembly piece. The door upper slideway 1.2 and the door 3 are equally wide, the door upper slideway 1.3 is arranged on the door 3, the door end stop pin 4 is arranged near the door end on the downstream slideway 1.3, the single-backing-plate stop pin 5 is arranged at the circulation distance of a backing plate, the door end stop pin 4 and the single-backing-plate stop pin 5 are vertically fixed at two ends of a long shaft 6, the projection on the plane vertical to the long shaft 6 forms an included angle of 90 degrees, and the long shaft 6 is arranged in the slideway 1, can rotate around the axis of the long shaft and is parallel to the sliding direction of the backing plate on the slideway 1.

The door end stop pin 4 is provided with a counterweight rod 7 in the direction that the pin top of the door end stop pin rotates 180 degrees around the axis of the long shaft 6, and when no other external force acts, gravity keeps the door end stop pin 4 in an upward posture and is exposed above the sliding contact surface of the slideway; the horizontal supporting rod 8 is arranged close to the outer side of the upper slideway 1.2 of the door and close to the door end stop pin 4, when the door 3 is in a closed state, the horizontal supporting rod 8 can support the lower edge of the counterweight rod 7, so that the door end stop pin 4 is positioned below the sliding contact surface of the slideway 1 in a horizontal prone position, and the single-backing plate stop pin 5 keeps an upward position and is exposed above the sliding contact surface of the slideway 1.

The second limit is arranged below one end, far away from the door, of the long shaft 6, after the door 3 is in a closed state and one end, far away from the door, of the long shaft 6 is switched to the second limit, the single-backing plate stop pin 5 keeps an upward posture and is hidden below a sliding contact surface of the slideway 1.

When the mechanism is put into use, if the assembly line has the requirement of personnel entering and exiting, the long shaft 6 is arranged in the slideway 1, so that the long shaft can rotate around the axis of the long shaft and is parallel to the sliding direction of the backing plate on the slideway 1. The assembly is placed on the backing plate, after one installation procedure is completed, the backing plate flows to the next station to be locked along the slideway, until all the assembly procedures of the section are completed, the emptied backing plate returns to the beginning end of the assembly line along the slideway, in the return process, when the door 3 of the inlet and the outlet of the assembly line is in an open state, the lower edge of the counterweight rod 7 is not supported by the horizontal supporting rod 8, the door end stop pin 4 is kept in an upward posture by gravity and is exposed above the sliding contact surface of the slideway, the backing plate is prevented from moving towards the door 3, and the safety of personnel entering and exiting is ensured; when the door 3 is closed, the horizontal supporting rod 8 can support the lower edge of the counterweight rod 7, so that the door end stop pin 4 is positioned below the sliding contact surface of the slideway 1 in a horizontal prone position, the single-backing-plate stop pin 5 keeps an upward position and is exposed above the sliding contact surface of the slideway 1, the subsequent backing plates are blocked from passing, only 1 backing plate can be guaranteed to pass through the slideway 1.2 on the door, the buffer blocking device 2 at the upstream end part of the assembly line is stopped, and the field personnel can judge how many backing plates are allowed to pass at most according to the distance between the door and the tail part of the backing plate which slides before, so that the field personnel can pass one by one through the opening and closing door 3.

When people do not need to put the door 3 into and out of the assembly line at all for a period of time, one end, far away from the door, of the long shaft 6 can be switched to be limited to the second limit by stirring the shifting fork 9 arranged near the single-backing-plate stop pin 5, the single-backing-plate stop pin 5 keeps an upward posture, is hidden below a sliding contact surface of the slideway 1, does not block the passing of the backing plate, and the backing plate can sequentially slide on the whole slideway 1.

An assembly line using the above-described tie-plate return mechanism constitutes yet another embodiment of the present specification: an assembly line.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An assembly line tie plate return mechanism, characterized in that: the assembly line comprises a buffer blocking device (2) arranged at the upstream end part of the assembly line, a door (3) arranged on the assembly line, and slide ways (1) which are arranged at two sides of the assembly line and incline upwards along the circulation direction of the assembly piece, wherein the slopes of the slide ways (1) at two sides of the assembly line are equal; the sliding way (1) is divided into three sections by taking left and right frames of the door (3) as boundaries, an upstream sliding way (1.1), a door upper sliding way (1.2) and a downstream sliding way (1.3) are respectively arranged along the circulation direction of an assembly piece, the door upper sliding way (1.2) is arranged on the door (3), a door end stop pin (4) capable of limiting the lifting state of a pin head relative to a sliding surface is arranged at the upper near door end of the downstream sliding way (1.3), and a single-backing-plate stop pin (5) capable of limiting the lifting state of the pin head relative to the sliding surface is arranged at the circulation distance of a backing plate at intervals along the downstream direction of the assembly line;

the device further comprises a long shaft (6) with the length of 1 backing plate and the circulation distance, wherein the long shaft (6) is arranged below a sliding surface in the downstream slideway (1.3), can rotate around the axis of the long shaft and is parallel to the sliding direction of the backing plate on the slideway (1), and the door end stop pin (4) and the single backing plate stop pin (5) are radially fixed at two ends of the long shaft (6) and form a 90-degree included angle on the projection on a plane perpendicular to the long shaft (6);

the top of the door end stop pin (4) rotates 180 degrees around the axis of the long shaft (6), a counterweight rod (7) is arranged in the direction, the door (3) is hinged with the supporting leg of the assembly line, the door is opened in the downstream direction of the assembly line, and a horizontal supporting rod (8) capable of lifting the counterweight rod (7) to a horizontal state when rotating along with the door is fixed on the outer side of the upper door slideway (1.2).

2. An assembly line pallet return mechanism according to claim 1, wherein: the second limit is arranged below the downstream slideway (1.3) and used for limiting the position of one end of the long shaft (6) provided with the single-backing plate stop pin (5), and the position meets the following conditions: when the pin top of the single-backing plate stop pin (5) is upward, the pin top is positioned below the sliding contact surface of the downstream slideway (1.3).

3. An assembly line comprising an assembly line pallet return mechanism according to any one of claims 1-2.