Assembly line carrier stress relieving device

Abstract

The utility model discloses an assembly line carrier stress relieving device which comprises a stress rod hinged to the front end of a walking frame in a carrier and a tail rod arranged at the rear end of the carrier, the lower end of the stress rod obliquely stretches out towards the rear lower portion of the carrier, and the lower end of the stress rod serves as a stress part for receiving power for pushing the carrier to advance. The tail rod extends towards the rear side of the walking frame, the tail rod on the front side carrier is used for acting on the stress rod on the rear side carrier, so that the lower end of the stress rod swings between the stress position and the disengaging position, and the disengaging position is higher than the stress position. The upper ends of the stress rods obliquely stretch out towards the upper front portion of the walking frame, a limiting structure is formed at the front end of the frame and used for limiting the stress rods so that the lower ends of the stress rods can be located at stress positions, and the tail rod is used for acting on the upper ends of the stress rods on the rear side carrier. The lower end of the stress rod swings between a stress position and a release position; the width of the tail rod is larger than that of the upper end of the stress rod.

Description

TECHNICAL FIELD

[0001] The utility model relates to a flow line, in particular to a device that releases the stress on a carrier on a flow line. BACKGROUND

[0002] A flow line is used to manufacture products with multiple processing procedures. When manufacturing, product components are carried by carriers, and the carriers carry the components to move forward on the flow line, thereby sequentially completing each procedure of the product. Depending on the different properties of the product components, the required carrier structure is generally different. For example, some components of footwear products are relatively small and fragmented, and have high hardness, which are not suitable for being transported by clamping. For the carrying of these components, a wheel type tray type carrier can be used. The structure of the flow line includes a closed loop main rail, and a plurality of workstations are arranged on the outer side of the main rail. One or more processing positions are formed at the workstations, thereby completing the corresponding procedures of the product. The main structure of the workstation includes an annular support rail, and the carrier is supported to walk or run on the support rail. A flexible drive belt is arranged on the lower side of the main rail and the support rail, and the drive belt has a plurality of push blocks protruding therefrom. A stress rod is arranged on the carrier to extend downward, and the push blocks push the carrier to move forward on the support rail or the main rail by abutting against the lower end of the stress rod. Since the number of carriers on the flow line is generally large, when the carrier moves from the main rail to the support rail of the workstation, the speed of the carrier is relatively slow compared to the speed of the carrier behind it. Therefore, the carrier behind it loses power and waits in place to prevent the carrier behind it from tipping over the carrier in front of it. In another case, due to the complexity of the procedure of some workstations and the slow production speed, it is possible that a large number of waiting carriers are accumulated in some areas of the flow line. These accumulated carriers cannot be pushed by the push blocks to prevent damage to the stress rod or the drive mechanism.

[0003] Therefore, it is necessary to provide a carrier stress release device to release the stress on the carrier. The stress release device is preferably arranged on the carrier, and can adaptively release or not release the stress on the carrier according to the working state of the carrier. In addition, when the carrier changes tracks, the corresponding structure on the carrier also changes position, which can change the relative position of the corresponding acting structure, thereby possibly changing the action result and causing the acting structure to fail and cause operational trouble. SUMMARY

[0004] The utility model needs to solve the technical problem: provide a kind of flow line carrier release stress device, the acting stability between this release stress device is good, can effectively guarantee the operational stability of flow line.

[0005] To solve the technical problem, the utility model discloses a technical scheme of a pipeline carrier stress relieving device, which comprises a stress rod hinged to the front end of a walking frame in a carrier and a tail rod arranged at the rear end of the carrier, the lower end of the stress rod extends obliquely downward toward the rear of the carrier, the lower end of the stress rod serves as a stress receiving part for receiving the driving force for advancing the carrier, the tail rod extends toward the rear side of the walking frame, the tail rod on the front side of the carrier is used to act on the stress rod on the rear side of the carrier, so that the lower end of the stress rod swings between a stress receiving position and a disengaging position, the disengaging position is higher than the stress receiving position, and the utility model is characterized in that the upper end of the stress rod extends obliquely upward toward the front upper side of the walking frame, a limiting structure is formed at the front end of the walking frame, the limiting structure is used to limit the stress rod so that the lower end of the stress rod is located at the stress receiving position, the tail rod is used to act on the upper end of the stress rod on the rear side of the carrier, so that the lower end of the stress rod swings between the stress receiving position and the disengaging position, and the width of the tail rod is greater than the width of the upper end of the stress rod.

[0006] When the carrier is stacked, the rear carrier will be in contact with the front carrier due to the static or slow speed of the front carrier, at this time, the tail rod on the front carrier will press the upper end of the stress rod on the rear carrier, so that the stress rod is deflected, the lower end of the stress rod is lifted to the disengaging position, the push block on the driving mechanism on the lower side will not be in contact with the lower end of the deflected stress rod, the rear carrier loses the driving force and stops the stress movement. When the front carrier changes the track and turns or makes an arc turn, the tail rod on the front carrier can continuously press the stress rod on the rear carrier, thereby meeting the requirement that the rear carrier loses the driving force.

[0007] Further, the width of the tail rod and the width of the upper end of the stress rod are between 1.5 and 4. This well meets the requirement that the tail rod on the front carrier continuously acts on the stress rod on the rear carrier, and the tail rod does not need to be too wide.

[0008] Further, a rear connecting seat is arranged at the rear end of the walking frame, the front end of the tail rod is hinged to the rear connecting seat, a horn-shaped limiting opening is arranged on the rear connecting seat, the front end of the limiting opening is small and the rear end is large, the tail rod is clearance-hinged in the limiting opening, and the limiting opening is used to limit the horizontal swing amplitude of the tail rod. Through the arrangement of the limiting opening, the deflection angle of the tail rod is limited to a certain extent, so as to prevent the swing amplitude of the tail rod from being too large and affecting the normal travel requirement of the carrier. The swing amplitude of the tail rod is generally limited within the range of 20 degrees.

[0009] Further, a rear extension part extending toward the rear side is integrally formed on the rear connecting seat, and the limiting opening is formed on the rear extension part. Through the arrangement of the rear extension part, the connection of the tail rod is facilitated, and the limiting opening is formed on the rear extension part.

[0010] Further, a pair of mounting frames are arranged on the opposite sides of the tail rod in the width direction, and one limit wheel is rotatably arranged in the mounting frames.

[0011] Further, a pair of mounting frames are arranged on the opposite sides of the tail rod in the width direction, and one limit wheel is rotatably arranged in the mounting frames.

[0012] Further, the tail rod comprises a guiding portion and a straight portion, the straight portion is arranged in front of the guiding portion and in the horizontal direction, and the guiding portion extends upward and rearward. The guiding portion facilitates the guiding of the outer end of the force rod, and the straight portion facilitates the combination of the upper end of the force rod and the tail rod.

[0013] Further, a plurality of protrusions are arranged on the bottom surface of the straight portion, the protrusions are arranged in the width direction of the straight portion, and the protrusions are arranged in parallel in the length direction of the straight portion. The protrusions can effectively reduce the impact force generated when the rear carrier collides with the front carrier, so that the rear carrier does not reciprocate on the track, and the working stability of the assembly line is improved.

[0014] Further, a front connecting seat is arranged on the front end of the walking frame, and a mounting hole is arranged on the front connecting seat, the cross section of the mounting hole is L-shaped, and the force rod is hingedly connected to the two side walls of the mounting hole. The mounting hole can limit the force rod, and the structure is simple and the lower end of the force rod can be stably stressed.

[0015] Compared with the prior art, the utility model has the beneficial effects that: through the structure of the tail rod, the stress on the force rod is released, so that when the carriers are stacked, the tail rod on the front carrier acts on the force rod, the stress point on the force rod is moved to the disengagement position, the rear carrier cannot continue to be driven by the driving mechanism, and in this way, the subsequent rear carriers are also in the power-off state and can well adapt to the state of the front carrier, so that the overall operation of the assembly line is stable. Through the widening of the tail rod, the tail rod can stably abut against the force rod, so that the tail rod on the front carrier can continuously act on the force rod on the rear carrier in the turning and stationary state of the front carrier, and the actual working requirements are well met. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a partial structure diagram of the assembly line, and shows the state diagram before the power of the rear carrier is released.

[0017] Figure 2 isFigure 1 Figure 3 is a structural diagram of the rear carrier when the power is removed.

[0018] Figure 3 Figure 4 is a structural diagram of a carrier, in which the force-bearing rod is exploded.

[0019] Figure 4 Figure 5 is an assembly diagram of the tail rod and the rear coupling seat on the carrier.

[0020] In the figure: 1, driving belt; 2, tail rod; 21, guide portion; 22, flat portion; 23, convex strip; 24, mounting bracket; 25, limiting wheel; 3, walking wheel; 4, walking bracket; 5, rear coupling seat; 51, rear extension; 52, limiting port; 6, push block; 7, force-bearing rod; 8, front coupling seat; 81, mounting port; 9, force-bearing position; 10, disengagement position. DETAILED DESCRIPTION

[0021] In combination with the accompanying drawings, the force-removing device of the present pipeline carrier is arranged on the carrier in the pipeline, and is used to remove the force of the rear carrier when the front carrier stops or changes the track to turn. The pipeline involved includes a main track and a plurality of branch tracks arranged outside the main track, and a flexible driving belt 1 is arranged on the lower side of the main track and the branch tracks, and a plurality of push blocks 6 are protruding upwardly arranged on the driving belt 1. The structure of the present force-removing device includes a force-bearing rod 7 hingedly arranged at the front end of a walking bracket 4 of the carrier and a tail rod 2 arranged at the rear end of the walking bracket 4. A walking wheel 3 is rotatably arranged on the walking bracket 4, and the walking wheel 3 is arranged vertically and is used to roll forward on the main track and the branch tracks. Only when the carriers are stacked, the tail rod 2 on the front carrier acts on the force-bearing rod 7 on the rear carrier, so that the rear carrier loses the power.

[0022] The lower end of the force-bearing rod 7 extends obliquely downward toward the rear of the carrier, and the lower end of the force-bearing rod 7 serves as a force-receiving portion for receiving the power for advancing the carrier, which is provided by the push block 6 driven by the driving belt 1. The tail rod 2 extends toward the rear side of the walking bracket 4, and the tail rod 2 on the front carrier is used to act on the force-bearing rod 7 on the rear carrier, so that the lower end of the force-bearing rod 7 swings between the force-bearing position 9 and the disengagement position 10. Figure 1 The double-dotted line in figure 3 shows the force-bearing position 9, Figure 2The double-dot line in the figure shows the disengaging position 10, which is higher than the force receiving position 9, that is, under the action of the tail rod 2 on the front carrier, the lower end of the force receiving rod 7 on the rear carrier moves upward to disengage the force receiving position 9, and the push block 6 on the driving mechanism is in the force receiving position 9. The upper end of the force receiving rod 7 extends obliquely upward toward the front upper end of the walking frame 4, and a limiting structure is formed at the front end of the walking frame 4. When the force receiving rod 7 is in a natural state, the limiting structure limits the force receiving rod 7 so that the lower end of the force receiving rod 7 is in the force receiving position 9. After the force receiving rod 7 is forced, the presence of the limiting structure also allows the force received by the force receiving rod 7 to be transmitted to the walking frame 4, so that the carrier can move forward. A front connecting seat 8 is provided at the front end of the walking frame 4, and a mounting hole 81 is provided on the front connecting seat 8. The cross section of the mounting hole 81 is in the shape of a square, and the force receiving rod 7 is hinged to the two side walls of the mounting hole 81. The mounting hole 81 forms the limiting structure, which can also be a limiting rod or a limiting protrusion provided at the front end of the walking frame 4. When the power is removed, the tail rod 2 is used to act on the upper end of the force receiving rod 7 on the rear carrier, usually in the form of resistance and compression, to act on the upper end of the force receiving rod 7, so that the lower end of the force receiving rod 7 swings between the force receiving position 9 and the disengaging position 10.

[0023] In order to improve the stability of the action between the tail rod 2 and the force receiving rod 7, the width of the tail rod 2 is greater than the width of the upper end of the force receiving rod 7. Even when the front carrier is in the process of changing tracks and turning, the tail rod 2 on the front carrier is required to act on the force receiving rod 7 on the rear carrier. According to the angle of the carrier changing tracks and turning, the width of the tail rod 2 is required to be between 1.5 and 4 times the width of the upper end of the force receiving rod 7.

[0024] The tail rod 2 has a certain swing range on the walking frame 4 to adapt to the swing range of the carrier during turning or movement. A rear connecting seat 5 is provided at the rear end of the walking frame 4, and the front end of the tail rod 2 is hinged to the rear connecting seat 5. The rear connecting seat 5 is provided with a trumpet-shaped limiting hole 52, the front end of which is smaller than the rear end. The tail rod 2 is hingedly connected in the limiting hole 52, and the limiting hole 52 limits the horizontal swing range of the tail rod 2. In order to facilitate the movable connection between the tail rod 2 and the rear connecting seat 5, a rear extension 51 extending toward the rear side is integrally formed on the rear connecting seat 5, and the limiting hole 52 is formed on the rear extension 51.

[0025] A pair of mounting frames 24 are respectively arranged on the opposite sides of the tail rod 2 in the width direction, the mounting frames 24 are integrated with the tail rod 2, and one limiting wheel 25 is rotatably arranged in the pair of mounting frames 24.

[0026] The tail rod 2 comprises a guiding portion 21 and a flat portion 22, the flat portion 22 is located at the front side of the guiding portion 21, the flat portion 22 is arranged along the horizontal direction, and the guiding portion 21 is obliquely extended towards the upper rear side. A plurality of convex strips 23 are arranged on the bottom surface of the flat portion 22, the existence of the convex strips 23 can effectively reduce the smoothness of the bottom surface of the flat portion 22, which is beneficial to improve the stability of the combination between the rear carrier and the front carrier. The convex strips 23 are arranged along the width direction of the flat portion 22, and the convex strips 23 are arranged in parallel along the length direction of the flat portion 22.

Claims

1. A force-releasing device for an assembly line vehicle, comprising a force-bearing rod hinged to the front end of a traveling frame in the vehicle and a tail rod disposed at the rear end of the vehicle, wherein the lower end of the force-bearing rod extends obliquely downward and rearward of the vehicle, and the lower end of the force-bearing rod serves as a force-receiving part that receives the power to propel the vehicle forward; the tail rod extends towards the rear side of the traveling frame, and the tail rod on the front side of the vehicle acts on the force-bearing rod on the rear side of the vehicle, causing the lower end of the force-bearing rod to swing between a force-bearing position and a disengaged position, the disengaged position being higher than the force-bearing position, characterized in that... The upper end of the force-bearing rod extends obliquely upwards and forwards towards the traveling frame, forming a limiting structure at the front end of the traveling frame. The limiting structure is used to limit the force-bearing rod so that the lower end of the force-bearing rod is in the force-bearing position. The tail rod is used to act on the upper end of the force-bearing rod on the rear vehicle, causing the lower end of the force-bearing rod to swing between the force-bearing position and the disengaged position. The width of the tail rod is greater than the width of the upper end of the force-bearing rod.

2. The assembly line carrier stress relief device according to claim 1, characterized in that, The ratio of the width of the tail rod to the width of the upper end of the force-bearing rod is between 1.5 and 4.

3. The assembly line carrier stress relief device according to claim 1, characterized in that, A rear connecting seat is provided at the rear end of the traveling frame. The front end of the tail rod is hinged to the rear connecting seat. The rear connecting seat is provided with a flared limiting port. The front end of the limiting port is smaller than the rear end. The tail rod is hinged to the limiting port with a gap. The limiting port is used to limit the horizontal swing amplitude of the tail rod.

4. The assembly line carrier stress relief device according to claim 3, characterized in that, The rear connecting seat has an integrally formed rear extension that extends to the rear side, and the limiting opening is formed on the rear extension.

5. The assembly line carrier stress relief device according to claim 3, characterized in that, Horizontal limit wheels are rotatably provided on opposite sides of the tail rod in the width direction. The limit wheels are biased towards the front end of the tail rod, and the outer circumferential surface of the limit wheels protrudes to the outer side of the tail rod in the width direction.

6. The assembly line carrier stress relief device according to claim 5, characterized in that, A pair of mounting brackets are provided on opposite sides in the width direction of the tailstock, and a limit wheel is rotatably installed in the pair of mounting brackets.

7. The assembly line vehicle stress relief device according to any one of claims 1 to 6, characterized in that, The tail rod includes a guide section and a straight section that are integrated together. The straight section is located in front of the guide section and is arranged in a horizontal direction. The guide section extends obliquely upward and backward.

8. The assembly line carrier stress relief device according to claim 7, characterized in that, Several raised strips are provided on the bottom surface of the flat section. These raised strips are arranged along the width direction of the flat section and are arranged side by side along the length direction of the flat section.

9. The assembly line vehicle stress relief device according to any one of claims 1 to 6, characterized in that, A front connecting seat is provided at the front end of the walking frame. The front connecting seat has an installation port with a U-shaped cross section. The force-bearing rod is hinged to the two side walls of the installation port.

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