Workpiece pushing device and roller conveyor line

Abstract

The invention discloses a workpiece pushing device, wherein a load-bearing member is provided on a loading platform; a driver is provided on the left side and / or the right side of the loading platform; one end of a movable member is connected to the power output end of the driver, the driver can drive the movable member to move in the front-back direction, and the other end is provided above the load-bearing member and a rotating shaft extending left and right is provided on the upper surface; the upper end of a one-way paddle is hinged on the rotating shaft, and the lower end is drooped and abuts against the rear side of the movable member; when the one-way paddle moves forward from the rear side of the load-bearing member, the one-way paddle can push the load-bearing member forward, thereby making the loading platform move forward; when the one-way paddle moves backward from the front side of the load-bearing member, the lower end of the one-way paddle can rotate forward with the rotating shaft as the center, thereby passing over the upper end of the load-bearing member. The invention can be used in a production line with no power or low power to realize the mechanical pushing of workpieces, reduce the work intensity of employees, improve work accuracy, and reduce the cost of replacing equipment for enterprises.

Description

Technical Field

[0001] The present invention relates to the technical field of production line conveying, and in particular to a workpiece pushing device and a roller conveyor line thereof. Background Art

[0002] In many manufacturing companies that have been established for a long time, there are some production equipment purchased in the early days. When they are used now, they are less efficient than more advanced equipment and have some difficulties. In this regard, it is difficult to update all these equipment at a high cost, so there is a need for a suitable solution to improve them to meet the latest production needs. One type of production equipment is an unpowered roller conveyor line. This type of roller conveyor line is not equipped with a drive mechanism. When the workpiece is placed on it, it needs to be manually pushed forward. If the workpiece is heavy and large, and there are certain requirements for the distance of each push, it is difficult to push it into place by manual push alone, resulting in the accumulation of workpieces and affecting the production rhythm; and because the weight and volume of heavy and large workpieces themselves bring high labor intensity to employees, sprains, strains or pinches are prone to safety hazards during the operation. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, one of the objects of the present invention is to provide a workpiece pushing device, which can be used in a non-powered or low-powered production line to achieve mechanical pushing of workpieces, reduce the work intensity of employees, and improve work accuracy.

[0004] The second purpose of the present invention is to provide a roller conveyor line, the roller itself does not need to be equipped with power, and the mechanical pushing of the workpiece can be achieved through the workpiece pushing device, which reduces the work intensity of employees, improves work accuracy, and reduces the cost of equipment replacement for the enterprise.

[0005] One of the purposes of the present invention is achieved by the following technical solution:

[0006] A workpiece pushing device, comprising:

[0007] A loading platform, on which a force-bearing member is provided;

[0008] A driver, which is arranged on the left side and / or the right side of the stage;

[0009] A movable member, one end of which is connected to the power output end of the driver, the driver can drive the movable member to move in the front-rear direction, the other end of the movable member is arranged above the force-bearing member, and the upper surface of the movable member is provided with a rotating shaft extending left and right;

[0010] A one-way paddle, the upper end of which is hinged on the rotating shaft, the lower end of which hangs down and abuts against the rear side of the movable member, and the one-way paddle can move forward and backward with the movable member;

[0011] When the one-way paddle moves forward from the rear side of the force-bearing member, the bottom end of the one-way paddle is higher than the loading platform and lower than the top end of the force-bearing member; the one-way paddle can push the force-bearing member forward, thereby causing the loading platform to move forward;

[0012] When the one-way paddle moves backward from the front side of the force-bearing member, the lower end of the one-way paddle can rotate forward with the rotation axis as the center, so as to pass over the upper end of the force-bearing member.

[0013] In the prior art, there are many difficulties in using the relatively old non-powered or low-powered production lines, and they cannot be used efficiently. The present invention has made improvements on this. Among them, a force-bearing member is provided on the loading platform for placing the workpiece, and the force-bearing member provides a force point for the one-way paddle to be moved. The workpiece placed on the loading platform can be pushed by pushing the loading platform through the force-bearing member. One end of the movable member is driven by the driver to move forward and backward, and the other end extends above the force-bearing member, so that the one-way paddle can act on the force-bearing member when it is installed on it.

[0014] Since the one-way paddle is hinged at the upper end, the lower end naturally droops under the action of gravity and rests against the rear side of the movable part when there is no other external force. The movable part prevents the one-way paddle from rotating forward, so the one-way paddle can only rotate to the rear side that is not blocked.

[0015] Combined with the length of the one-way paddle between the loading platform and the top of the force-bearing member, when the one-way paddle moves forward from the rear side of the force-bearing member, the bottom end of the one-way paddle is higher than the loading platform and lower than the top of the force-bearing member; the one-way paddle can push the force-bearing member forward, thereby making the loading platform carrying the workpiece move forward; when the one-way paddle moves backward from the front side of the force-bearing member, the lower end of the one-way paddle can rotate forward with the rotation axis as the center, and the force-bearing member will not cause any obstruction to it, thereby passing over the upper end of the force-bearing member to prevent the loading platform that has just been pushed to the front from being pulled back.

[0016] Therefore, it can be seen that the workpiece pushing device in the present invention can use the mechanical power of the driver to push and transport the workpiece in a directional manner. It is very suitable for use in unpowered or low-power production lines, reducing the manpower burden and avoiding the defect that it is difficult to ensure the distance by manual pushing, with higher accuracy.

[0017] Furthermore, it also includes a starter and a returner electrically connected to the driver, and the starter and the returner are arranged on the movement path of the worktable; the starter can be triggered by the worktable, so that the driver drives the movable part to move forward; the returner can be triggered by the worktable, so that the driver drives the movable part to move backward.

[0018] Furthermore, the driver is a mechanical rodless cylinder, which includes a front cylinder cover, a cylinder barrel, a slider and a rear cylinder cover, and the front cylinder cover and the rear cylinder cover are respectively covered on the front and rear ends of the cylinder barrel; the slider slides back and forth along the outer middle part of the cylinder barrel; the movable part is connected to the slider; the front cylinder cover is provided with a front air valve, and the rear cylinder cover is provided with a rear air valve, and the front air valve and the rear air valve are used to control the intake and exhaust of air.

[0019] Furthermore, the starter and the returner are both touch sensors provided with a touch rod, and the touch rod extends into the loading platform and is triggered by the touch of the loading platform.

[0020] Furthermore, the starter is electrically connected to the rear air valve and controls the switch of the rear air valve, and the returner is electrically connected to the front air valve and controls the switch of the front air valve; when the starter is triggered by the workbench, the rear air valve opens and air is taken in, and the slider slides forward; when the returner is triggered by the workbench, the front air valve opens and air is taken in, and the slider moves backward.

[0021] Furthermore, a rotating shaft seat is provided above the movable part, a first rotating hole is provided on the rotating shaft seat, and the rotating shaft is rotatably provided in the first rotating hole.

[0022] Furthermore, the one-way paddle is in the shape of an elongated block, a second rotation hole is provided on the front side of the upper end of the one-way paddle, and the rotation shaft is inserted into the first rotation hole and the second rotation hole at the same time.

[0023] Furthermore, the force-bearing member is block-shaped and erected on the upper surface of the loading platform.

[0024] Furthermore, more than two force-bearing members are arranged side by side and at intervals in the front-to-back direction.

[0025] The second object of the present invention is achieved by adopting the following technical solution:

[0026] A roller conveyor line comprises the workpiece pushing device, two fixed rails arranged side by side and a plurality of movable rollers, wherein the fixed rails extend forward and backward, the movable rollers are rotatably connected to the two fixed rails, all the movable rollers are arranged side by side along the front-back direction and are perpendicular to the fixed cabinet; the loading platform is placed on the movable rollers and can move forward and backward; the driver is arranged on the left side and / or right side of the fixed rails.

[0027] The roller conveyor line in the present invention includes a fixed rail and a movable roller in the middle, which is similar to the old unpowered conveyor roller structure in the prior art. By setting a workpiece pushing device, even if the movable roller cannot rotate by itself, the workpiece transported thereon can be automatically moved, thereby improving the utilization rate of old equipment, reducing a large amount of replacement costs, and reducing waste. Due to the rotatable structure of the movable roller, the pushing device can reduce friction when pushing, and the pushing and transportation of the workpiece is simpler. It can be seen that the workpiece of the roller conveyor line in the present invention does not need to be manually pushed by personnel during the pushing process, which reduces the manpower burden, improves the utilization rate of the roller, and can save costs for the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional schematic diagram of a roller conveyor line including a workpiece pushing device in the present invention when a starter is triggered;

[0029] Figure 2 It is a three-dimensional schematic diagram of a workpiece pushing device in the present invention when the one-way paddle is naturally hanging down;

[0030] Figure 3 It is a three-dimensional schematic diagram of a workpiece pushing device in the present invention when the one-way paddle moves backward and passes over the force-bearing member;

[0031] Figure 4 It is a three-dimensional schematic diagram of a one-way paddle of a workpiece pushing device in the present invention when it is located at the rear side of the force-bearing member;

[0032] Figure 5 It is a three-dimensional schematic diagram of a roller conveyor line including a workpiece pushing device in the present invention when a returner is triggered. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0034] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0035] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0036] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element.

[0037] Unless otherwise defined, all technical terms and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0038] Figures 1 to 5 A workpiece pushing device of the present invention is shown, comprising a loading platform 1, a driver 2, a movable part 4 and a one-way paddle 3:

[0039] A force-bearing member 11 is provided on the loading platform 1, and the loading platform 1 is used to place the workpiece A and has freedom of movement in the front-to-back direction; a force-bearing member 11 is provided on the loading platform 1 for placing the workpiece A, and the force-bearing member 11 provides a force point for the movement of the one-way paddle 3, and the workpiece A placed on the loading platform 1 can be pushed by pushing the loading platform 1 through the force-bearing member 11.

[0040] The driver 2 is arranged on the left side and / or right side of the stage 1 so as not to affect the forward and backward movement of the stage 1, and the driving direction of the driver 2 is the forward and backward direction to facilitate driving the stage 1 to move forward and backward;

[0041] One end of the movable part 4 is connected to the power output end of the driver 2, and the driver 2 can drive the movable part 4 to move in the front-to-back direction. The other end of the movable part 4 is arranged above the force-bearing part 11, and the upper surface of the movable part 4 is provided with a rotating shaft 41 extending left and right; one end of the movable part 4 is driven by the driver 2 to move forward and backward, and the other end extends above the force-bearing part 11, so that the one-way paddle 3 can act on the force-bearing part 11 when it is installed thereon.

[0042] like Figure 2 As shown, the upper end of the one-way paddle 3 is hinged on the rotating shaft 41, and the lower end of the one-way paddle 3 hangs down and abuts against the rear side of the movable member 4, and the one-way paddle 3 can move forward and backward with the movable member 4;

[0043] When the one-way paddle 3 moves forward from the rear side of the force-bearing member 11, the bottom end of the one-way paddle 3 is higher than the loading platform 1 and lower than the top end of the force-bearing member 11; the one-way paddle 3 can push the force-bearing member 11 forward, thereby causing the loading platform 1 to move forward;

[0044] When the one-way paddle 3 moves backward from the front side of the force-bearing member 11 , the lower end of the one-way paddle 3 can rotate forward around the rotation axis 41 , thereby passing over the upper end of the force-bearing member 11 .

[0045] like Figure 3 As shown, when the movable member 4 is located above the force-bearing member 11, the one-way paddle 3 is located above the force-bearing member 11; since the upper end of the one-way paddle 3 is hinged, the lower end naturally droops and rests against the rear side of the movable member 4 under the action of gravity when there is no other external force, and the movable member 4 acts to prevent it from rotating forward, so the one-way paddle 3 can only rotate to the rear side that is not blocked.

[0046] like Figure 4 As shown, due to the length of the one-way paddle 3 between the loading platform 1 and the top of the force-bearing member 11, when the one-way paddle 3 moves forward from the rear side of the force-bearing member 11, the bottom end of the one-way paddle 3 is higher than the loading platform 1 and lower than the top of the force-bearing member 11; the one-way paddle 3 can push the force-bearing member 11 forward, so that the loading platform 1 carrying the workpiece moves forward; when the one-way paddle 3 moves backward from the front side of the force-bearing member 11, the lower end of the one-way paddle 3 can rotate forward with the rotating shaft 41 as the center, and the force-bearing member 11 will not hinder it, so that it passes over the upper end of the force-bearing member 11 to prevent the loading platform 1 that has just been pushed to the front from being pulled back.

[0047] The workpiece pushing device in the present invention can use the mechanical power of the driver 2 to push and transport the workpiece A in a directional manner. It is very suitable for use in unpowered or low-powered production lines, reducing the manpower burden and avoiding the defect that it is difficult to ensure the distance when pushing manually, with higher accuracy.

[0048] like Figure 1As shown, in order to make the operation of the pushing device more automated, it also includes a starter 5 and a returner 6 electrically connected to the driver 2, and the starter 5 and the returner 6 are arranged on the movement path of the loading platform 1; the starter 5 can be triggered by the loading platform 1, so that the driver 2 drives the movable part 4 to move forward; the returner 6 can be triggered by the loading platform 1, so that the driver 2 drives the movable part 4 to move backward. The starter 5 and the returner 6 provide signals for the workpiece pushing device to start and end operation. When in use, the loading platform 1 with the workpiece A can be pushed to a suitable initial position first. At this time, the one-way paddle 3 is located behind the force-bearing member 11. After the loading platform 1 is pushed forward a small distance, the starter 5 can be triggered. Then the starter 5 turns on the driver 2 to drive the movable member 4 to move forward. The movable member 4 acts on the force-bearing member 11 and pushes the loading platform 1 forward; when it reaches the position of the returner 6, the loading platform 1 triggers the returner 6, and then the returner 6 causes the driver 2 to drive the movable member 4 to stop moving forward and instead move backward and return. Since the one-way paddle 3 rotates unidirectionally, the force-bearing member 11 will not form an obstacle during its backward return process, and the loading platform 1 will not be pushed back; the one-way paddle 3 returns to wait for the arrival of the next loading platform 1 and workpiece A to trigger the starter 5, and then repeat the last operation. Therefore, by setting the starter 5 and the returner 6, each worktable 1 can be automatically pushed forward the same distance (the distance from the trigger starter 5 to the trigger returner 6), which is very suitable for use in scenarios where there are requirements for the placement distance of each workpiece A in production and manufacturing, and is more precise than manual pushing and placement.

[0049] In order to provide a stable long stroke and precisely controllable driving force, the driver 2 in this embodiment is preferably a mechanical rodless cylinder, which includes a front cylinder cover 21, a cylinder barrel 22, a slider 23 and a rear cylinder cover 24. The front cylinder cover 21 and the rear cylinder cover 24 are respectively covered at the front and rear ends of the cylinder barrel 22; the slider 23 slides forward and backward along the outer middle of the cylinder barrel 22; the movable member 4 is connected to the slider 23; the front cylinder cover 21 is provided with a front air valve, and the rear cylinder cover 24 is provided with a rear air valve, and the front air valve and the rear air valve are used to control the air intake and exhaust to control the forward and backward movement of the slider 23. The cylinder barrel 22 of the mechanical rodless cylinder is small in size and can meet the requirements of ultra-long stroke movement. Compared with general cylinders, it is more suitable for use in production lines with no power or low power.

[0050] The above-mentioned starter 5 and returner 6 can be a variety of sensors or structures that can detect the position change of the loading platform 1, such as photoelectric sensors, travel switches, etc., which can achieve the above-mentioned effects, but these often need to be used in conjunction with a PLC controller to process and convey commands through the PLC controller. Therefore, according to the characteristics of the structural mechanical rodless cylinder of this embodiment, it is preferred that the starter 5 and returner 6 are both touch sensors with a touch rod 51, and the touch rod 51 extends into the loading platform 1 and is triggered by the touch of the loading platform 1. When the touch rod 51 is triggered, it is equivalent to directly turning on the switch of the rear air valve or the front air valve. The starter 5 is electrically connected to the rear air valve and controls the switch of the rear air valve, and the returner 6 is electrically connected to the front air valve and controls the switch of the front air valve; when the starter 5 is triggered by the loading platform 1, the rear air valve opens and intakes air, and the slider 23 slides forward; when the returner 6 is triggered by the loading platform 1, the front air valve opens and intakes air, and the slider 23 moves backward. This structure enables the movement of the stage 1 to be directly controlled by the mechanical rodless cylinder without the need to transmit commands through the PLC. The structure is simpler, the cost is lower, and electrical errors are less likely to occur.

[0051] like Figures 2 to 4 As shown in the figure, as a preferred solution for the connection structure between the movable part 4 and the one-way paddle 3, a rotating shaft seat 42 is further provided above the movable part 4, a first rotating hole is provided on the rotating shaft seat 42, and the rotating shaft 41 is rotatably provided in the first rotating hole. The one-way paddle 3 is in the shape of an elongated block, a second rotating hole is provided on the front side of the upper end of the one-way paddle 3, and the rotating shaft 41 is inserted into the first rotating hole and the second rotating hole at the same time. This structure is easy to manufacture, and cleverly uses gravity and the movable part 4 as the automatic return and limit structure, which is simple and effective, and is not prone to error even if it is used repeatedly.

[0052] As a preferred solution of the force bearing member 11, the force bearing member 11 is block-shaped and erected on the upper surface of the loading platform 1. The block-shaped side area is large and flat, which can better withstand the thrust of the one-way paddle 3 and is not easy to slip off during the pushing process.

[0053] In addition, although a single force-bearing member 11 can drive the entire loading platform 1 under the push of the one-way paddle 3, the present embodiment preferably has two or more force-bearing members 11 arranged side by side and at intervals in the front-to-back direction. This is to avoid a structural failure that causes the one-way paddle 3 to fail to successfully act on the first force-bearing member 11, and there is still a second force-bearing member 11 as a backup solution, which can tolerate a higher error rate.

[0054] like Figure 1 and 5As shown, this embodiment also provides a roller conveyor line, including the workpiece pushing device, two fixed rails 8 arranged side by side and a plurality of movable rollers 9, the fixed rails 8 extend forward and backward, the movable rollers 9 are rotatably connected to the two fixed rails 8, all the movable rollers 9 are arranged side by side along the front-back direction and are perpendicular to the fixed cabinet, when the platform 1 is placed on the movable rollers 9 and moves forward and backward, the movable rollers 9 can rotate under the platform 1 to reduce friction, and the pushing and transportation of the workpiece A is simpler;

[0055] The loading platform 1 is placed on the movable roller 9 and can move forward and backward; the driver 2 is arranged on the left side and / or right side of the fixed rail 8.

[0056] The roller conveyor line in this embodiment includes a fixed rail 8 and a movable roller 9 in the middle, which is similar to the old unpowered conveyor roller structure in the prior art. By setting a workpiece pushing device, even if the movable roller 9 cannot rotate by itself, the workpiece A transported thereon can be automatically moved, thereby improving the utilization rate of old equipment, reducing a large amount of replacement costs, and reducing waste. It can be seen that the workpiece A of the roller conveyor line in the present invention does not need to be manually pushed by personnel during the pushing process, which reduces the manpower burden, improves the utilization rate of the roller, and can save costs for the enterprise.

[0057] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A workpiece pushing device, characterized in that: include: A loading platform, on which a force-bearing member is provided; The force-bearing member is block-shaped and vertically arranged on the upper surface of the loading platform; A driver, which is arranged on the left side and / or the right side of the stage; A movable member, one end of which is connected to the power output end of the driver, the driver can drive the movable member to move in the front-rear direction, the other end of the movable member is arranged above the force-bearing member, and the upper surface of the movable member is provided with a rotating shaft extending left and right; A one-way paddle, the upper end of which is hinged on the rotating shaft, the lower end of which hangs down and abuts against the rear side of the movable member, and the one-way paddle can move forward and backward with the movable member; When the one-way paddle moves forward from the rear side of the force-bearing member, the bottom end of the one-way paddle is higher than the loading platform and lower than the top end of the force-bearing member; the one-way paddle can push the force-bearing member forward, thereby causing the loading platform to move forward; When the one-way paddle moves backward from the front side of the force-bearing member, the lower end of the one-way paddle can rotate forward with the rotation axis as the center, so as to pass over the upper end of the force-bearing member; It also includes a starter and a returner electrically connected to the driver, the starter and the returner are arranged on the moving path of the platform; the starter can be triggered by the platform, so that the driver drives the movable part to move forward; the returner can be triggered by the platform, so that the driver drives the movable part to move backward; The driver is a mechanical rodless cylinder, which includes a front cylinder cover, a cylinder barrel, a slider and a rear cylinder cover, wherein the front cylinder cover and the rear cylinder cover are respectively covered at the front and rear ends of the cylinder barrel; the slider slides forward and backward along the cylinder barrel outside the middle part of the cylinder barrel; the movable part is connected to the slider; the front cylinder cover is provided with a front air valve, and the rear cylinder cover is provided with a rear air valve, and the front air valve and the rear air valve are used to control air intake and air outlet; The starter and returner are both touch sensors with a touch rod, and the touch rod extends into the loading platform and is triggered by the touch of the loading platform; The starter is electrically connected to the rear air valve and controls the switch of the rear air valve, and the returner is electrically connected to the front air valve and controls the switch of the front air valve; when the starter is triggered by the worktable, the rear air valve opens and air is taken in, and the slider slides forward; when the returner is triggered by the worktable, the front air valve opens and air is taken in, and the slider moves backward.

2. The workpiece pushing device according to claim 1, characterized in that: A rotating shaft seat is also provided above the movable part, a first rotating hole is provided on the rotating shaft seat, and the rotating shaft is rotatably provided in the first rotating hole.

3. The workpiece pushing device according to claim 2, characterized in that: The one-way paddle is in the shape of an elongated block, a second rotation hole is provided on the front side of the upper end of the one-way paddle, and the rotation shaft is inserted into the first rotation hole and the second rotation hole at the same time.

4. The workpiece pushing device according to claim 1, characterized in that: The force bearing members are arranged side by side and spaced apart in two or more pieces in the front-to-back direction.

5. A roller conveyor line, characterized in that: It comprises the workpiece pushing device as described in any one of claims 1 to 4, two fixed rails arranged side by side and a plurality of movable rollers, wherein the fixed rails extend forward and backward, the movable rollers are rotatably connected to the two fixed rails, all the movable rollers are arranged side by side along the front-to-back direction and are perpendicular to the fixed rails; the loading platform is placed on the movable rollers and can move forward and backward; the driver is arranged on the left side and / or right side of the fixed rails.

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