CN115108233A

CN115108233A - Assembly line backing plate return mechanism and assembly line

Info

Publication number: CN115108233A
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: 2022-09-27
Anticipated expiration: 2042-07-20
Also published as: CN115108233B

Abstract

The invention belongs to the technical field of production line logistics and discloses an assembly line base plate returning mechanism and an assembly line using the same. Let the assembly line automatic slip back this section under unpowered state produce the line initial end through the slide, through the stop pin that sets up, convenient passing through one by one of producing line business turn over door department realization backing plate, avoid returning the backing plate part to ride on the door, the normal switching's of line business turn over door condition emergence is produced in the influence. 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 production line logistics, and particularly discloses an assembly line base plate returning 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, electric systems are also increasingly complex, and various wire harnesses are required to be preassembled before all vehicle types enter a chassis line in order to facilitate installation of a subsequent process.

Before preassembling, in order to prevent the surface of the vehicle frame from being scratched by paint in the moving process, workers need to drop the vehicle frame on a base plate of a preassembly line, and after preassembling is completed, the vehicle frame is pushed to the next parking space through a roller rail until the whole preassembly line is full. And after the pre-assembled frame is threaded, the base plate below the frame returns to the initial position for standby.

At present, the backing plate return schemes of various large commercial automobile manufacturers are 3:

scheme 1: and (5) carrying by manpower. Workers (the left and the right sides and two persons) preassembling the wire harness walk to the tail end of the preassembling line, and the idle base plate is taken back to the head end for use, so that the labor intensity of the workers is increased.

Scheme 2: and (4) carrying in a centralized manner. And storing 2 to 3 times of base plates, after the base plates are used, storing the base plates on a small flatbed cart at the tail of the cable in a centralized manner, and then selecting a machine by a person at the tail of the cable to push the base plates back to the head for standby. Compared with the scheme 1, the labor intensity is reduced, but the number of the base plates is increased, and the occupied space is increased;

scheme 3: and (4) carrying the product electrically and automatically. Because the door that personnel passed in and out is all installed to pre-installation line left and right sides, the department of being close to first, last both ends, when the backing plate returns, can start after need confirming the passageway through the inductor whether feasible, the structure is complicated, and is with high costs.

The design of an unpowered base plate returning mechanism is a technical problem which needs to be solved at present and can conveniently control the starting and stopping of the returning motion when base plates are returned to an inlet and an outlet of production line personnel.

Disclosure of Invention

In order to solve the problems in the background art, the invention provides an assembly line base plate returning mechanism, which has the following specific technical scheme:

a backing plate returning mechanism of an assembly line comprises a buffer stopping device arranged at the upstream end part of the assembly line, a door arranged on the assembly line, and slide ways which are arranged at the two sides of the assembly line and incline upwards along the circulation direction of an assembly part, wherein the slopes of the slide ways at the two sides of the assembly line are equal; the slide way is divided into three parts by taking the left frame and the right frame of the door as boundaries, the three parts are respectively an upstream slide way, an upper door slide way and a downstream slide way along the flow direction of an assembly part, the upper door slide way is arranged on the door, a door end stop pin capable of limiting the rising and falling state of a pin head relative to a sliding surface is arranged at the upper end of the downstream slide way close to the door, and a single cushion plate stop pin capable of limiting the rising and falling state of the pin head relative to the sliding surface is arranged at the position spaced by the flow distance of one cushion plate in the downstream direction of the assembly line.

The design enables the base plates to automatically slide back to the initial ends of the assembly lines after the logistics transportation is completed, the labor intensity of workers is reduced, the base plates can be conveniently controlled to pass through the door end stop pins and the single base plate stop pins one by one at the inlet and the outlet of the assembly lines, and the base plates are prevented from being clamped on the door.

Furthermore, the sliding device further comprises a long shaft with the length being 1 base plate and the flowing distance, the long shaft is installed below a sliding surface in the downstream slide way, can rotate around the axis of the long shaft and is parallel to the sliding direction of the base plates on the slide way, the door end stop pin and the single base plate stop pin are both fixed at two ends of the long shaft in the radial direction, and the projection of the door end stop pin and the single base plate stop pin on a plane perpendicular to the long shaft forms a 90-degree included angle.

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 by only one action, so that the base plates can slide one by one.

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

Therefore, the action of opening and closing the door 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, a second limit position is arranged below the downstream slideway and used for limiting the position of one end of the long shaft, which is provided with the single-base-plate stop pin, and the position satisfies the following conditions: when the pin top of the single-pad stop pin faces upwards, the pin top is positioned below the sliding contact surface of the downstream slideway.

The present invention also provides an assembly line configured with one or more of the above-described assembly line dunnage return mechanisms.

Drawings

FIG. 1 is a schematic view of the positional relationship of a door end stop pin, a single bolster stop pin, a long shaft and a weight lever according to an embodiment of the present invention;

FIG. 2 is a schematic view of an assembly line single-sided track layout in an embodiment of the invention;

FIG. 3 is a schematic view of an assembly line double-sided track layout in an embodiment of the invention;

in the figure: 1. a slideway; 1.1 an upstream chute; 1.2 door upper slideway; 1.3 downstream slide; 2. a buffer arresting device; 3. a door; 4. a door end stop pin; 5. a single backing plate stop pin; 6. a long axis; 7. a weight lever; 8. a horizontal support rod; 9. a shifting fork.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described with reference to the accompanying drawings and specific embodiments. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from this embodiment without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 3, an assembly line pallet return mechanism includes a buffer stop 2 provided at an upstream end portion of an assembly line, a door 3 provided on the assembly line, and slide rails 1 installed at both sides of the assembly line to be inclined upward in a direction in which the assembly is circulated, the slopes of the slide rails 1 at both sides of the assembly line being equal.

The slideway 1 is divided into three parts by taking the left and right frames of the door 3 as boundaries, and an upstream slideway 1.1, an upper slideway 1.2 of the door and a downstream slideway 1.3 are respectively arranged along the circulation direction of the assembly part. The upper door slideway 1.2 is as wide as the door 3 and is arranged on the door 3, the lower door slideway 1.3 is provided with a door end stop pin 4 near the door end, a single cushion plate stop pin 5 is arranged at the position separated from the circulation distance of a cushion plate, the door end stop pin 4 and the single cushion plate stop pin 5 are both vertically fixed at the 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 cushion plate on the slideway 1.

The door end stop pin 4 is provided with a balance weight rod 7 in the direction that the pin top rotates 180 degrees around the axis of the long shaft 6, and when no other external force acts, the gravity enables the door end stop pin 4 to keep an upward posture and be exposed above the sliding contact surface of the slideway; a horizontal supporting rod 8 is arranged close to the outer side of the upper door sliding way 1.2 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 sliding way 1 in a horizontal posture, and the single base plate stop pin 5 keeps an upward posture and is exposed above the sliding contact surface of the sliding way 1.

And a second limit position is arranged below one end of the long shaft 6, which is far away from the door, and when the door 3 is in a closed state and one end of the long shaft 6, which is far away from the door, is switched to the second limit position, the single cushion 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 to enter and exit, the long shaft 6 is arranged in the slideway 1 and can rotate around the shaft center and be parallel to the sliding direction of the base plate on the slideway 1. The assembly is placed on the backing plate, the assembly is conveyed to the next station along the slide way to be locked after an installation procedure is finished, the backing plate which is emptied returns to the initial end of the assembly line along the slide way until all assembly procedures of the assembly section are finished, when the door 3 at the inlet and the outlet of the assembly line is in an open state in the returning process, the horizontal support rod 8 cannot support the lower edge of the counterweight rod 7, the door end stop pin 4 is kept in an upward posture by gravity and is exposed above the sliding contact surface of the slide way, the backing plate is prevented from moving towards the door 3, and the safety of personnel entering and exiting is guaranteed; when the door 3 is closed, the horizontal support rod 8 can support the lower edge of the balance weight rod 7, so that the door end stop pin 4 is positioned below the sliding contact surface of the slide way 1 in a horizontal posture, the single cushion plate stop pin 5 keeps an upward posture and is exposed above the sliding contact surface of the slide way 1, subsequent cushion plates are prevented from passing through, only 1 cushion plate can be ensured to pass through the slide way 1.2 on the door, the buffer stop device 2 at the upstream end part of the assembly line stops, and field personnel judge the maximum number of cushion plates allowed to pass according to the distance from the door to the tail part of the former sliding cushion plate, so that the cushion plates are released one by opening and closing the door 3.

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

An assembly line using the aforementioned tie plate returning mechanism constitutes another embodiment of the present specification: an assembly line.

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 changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement 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 buffering and 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 upwards incline along the circulation direction of the assembly part, wherein the slopes of the slide ways (1) at the two sides of the assembly line are equal; the slide (1) with door (3) left and right sides frame is divided into three for the boundary branch, is upper reaches slide (1.1), door slide (1.2) and low reaches slide (1.3) respectively along the built-up member circulation direction, door slide (1.2) are installed on door (3), low reaches slide (1.3) are gone up near the door end and are equipped with door end only round pin (4) that can inject the round pin head and rise or fall the state for the sliding surface, are equipped with single backing plate only round pin (5) that can inject the round pin head and rise or fall the state for the sliding surface to the circulation distance department of assembly line downstream interval backing plate.

2. An assembly line pallet return mechanism as defined in claim 1, wherein: still include length long axis (6) that are the circulation distance of 1 backing plate, long axis (6) install in below the glide plane in downstream slide (1.3), can be around its axle center rotation, and with the backing plate be in the direction of sliding on slide (1) is parallel, door end only round pin (4) and single backing plate only round pin (5) are all radially fixed the both ends of long axis (6), and with projection on the long axis (6) vertically plane becomes 90 contained angles.

3. An assembly line pallet return mechanism as claimed in claim 2, wherein: and a counterweight rod (7) is arranged in the direction that the pin top of the door end stop pin (4) rotates 180 degrees around the axis of the long shaft (6), the door (3) is hinged with an assembly line supporting leg and is opened towards the downstream direction of the assembly line, and a horizontal supporting rod (8) which can lift the counterweight rod (7) to be in a horizontal state when rotating along with the door is fixed on the outer side of the door upper slide way (1.2).

4. An assembly line pallet return mechanism as claimed in claim 3, wherein: a second limit position 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-base-plate stop pin (5), and the position satisfies the following conditions: when the pin top of the single-pad stop pin (5) faces upwards, the pin top is positioned below the sliding contact surface of the downstream slideway (1.3).

5. An assembly line comprising an assembly line pallet return mechanism as claimed in any one of claims 1 to 4.