A workpiece loading platform

Abstract

The utility model relates to the field of production transmission technology, and specifically discloses a workpiece loading platform, including a conveyor line and an in-place detection component located at the output end of the conveyor line, the in-place detection component includes a positioning plate and an in-place sensor, the positioning plate is provided with a guide port, after the workpiece moves into the guide port, the in-place sensor can be triggered; the in-place sensor includes a trigger rod, an elastic member and an induction switch, the induction switch is fixedly installed, the trigger rod is slidably connected to the positioning plate or is provided on a frame, the sliding direction of the trigger rod is parallel to the conveying direction of the conveyor line, an elastic member is provided between the trigger rod and the positioning plate / frame, and the trigger rod can trigger the induction switch. This scheme is used to solve the problem that the loading platform of the prior art conveys each workpiece to the position of the output end of the conveyor line, which affects the accuracy of the picking robot.

Description

Technical Field

[0001] The utility model relates to the technical field of production transmission, in particular to a workpiece loading platform. Background Art

[0002] With the rapid development of science and technology, automation technology has become an important force in promoting the process of industrial modernization. In the context of increasingly fierce global competition, improving the level of factory automation is of great significance in improving production efficiency, reducing costs, and optimizing resource allocation.

[0003] For the processing of the third-generation wheel hub bearings, since the inner ring and / or outer ring of the wheel hub bearings are equipped with flange sections and shaft sections, both the flange sections and the shaft sections need to be machined during processing. The current conventional processing method is that one wheel hub bearing inner ring / outer ring needs to be processed in different positions on at least three machine tools or different machine tools need to perform rough processing and fine processing. At present, the factory has been gradually eliminating the method of manually clamping workpieces on machine tools. Most of them use robots to pick up parts from the loading table, and then use robots to insert the workpieces into the machining equipment to reduce labor costs and improve production efficiency.

[0004] The current loading platform generally includes a conveyor line and a mechanical blocking structure at the output end of the conveyor line, such as setting a baffle at the output end of the conveyor line, or installing an in-place sensor (such as a through-beam or reflective photoelectric sensor) on the side of the output end of the conveyor line. After the in-place sensor detects the workpiece, it controls the conveyor line to stop conveying to prevent the workpiece from falling, and at the same time facilitates the robot to take the workpiece at the output end of the conveyor line every time. However, because the width of the conveyor line is greater than the width of the workpiece, and there is a certain deviation in the position of the workpiece placed on the conveyor line each time, it is impossible to accurately determine the position of the workpiece to be used by relying solely on the in-place sensor, which easily leads to the problem that the robot cannot accurately pick up the workpiece. Utility Model Content

[0005] The utility model aims to provide a workpiece loading platform to solve the problem that the loading platform in the prior art conveys each workpiece to the position of the output end of the conveyor line with deviation, thereby affecting the accuracy of the picking-up robot.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A workpiece loading platform comprises a conveyor line and an in-place detection component located at the output end of the conveyor line. The in-place detection component comprises a positioning plate and an in-place sensor. The positioning plate is provided with a guide opening. When the workpiece moves into the guide opening, the in-place sensor can be triggered.

[0008] The principle and advantage of this solution are: by setting the guide port on the positioning plate, the workpiece must be moved to the guide port before it can be sensed by the in-place sensor. After the in-place sensor senses the workpiece, it means that the workpiece has been accurately moved to the picking position. At this time, the picking robot can accurately pick up the workpiece with accurate position, thereby avoiding the problem of inaccurate picking by the picking robot caused by the position deviation of the workpiece at the output end of the conveyor line.

[0009] In addition, the positioning plate of the present solution is set at the output end of the conveyor line, which can also block the workpiece being conveyed to prevent the workpiece from falling from the output end of the conveyor line.

[0010] Preferably, as an improvement, the in-place sensor includes a trigger rod, an elastic member and a sensing switch, the sensing switch is fixedly installed, the trigger rod is slidably connected to a positioning plate or a frame, the sliding direction of the trigger rod is parallel to the conveying direction of the conveyor line, an elastic member is arranged between the trigger rod and the positioning plate / frame, and the trigger rod can trigger the sensing switch.

[0011] Beneficial effect: When this solution is adopted, when the workpiece moves into the guide port, the workpiece pushes the trigger rod, so that the trigger rod overcomes the elastic force of the elastic member and is pushed. The pushed trigger rod can trigger the sensing switch. The sensing switch is triggered, indicating that the workpiece has reached the pickup position.

[0012] Preferably, as an improvement, the positioning plate is provided with an air avoidance groove for avoiding the movement stroke of the trigger rod.

[0013] Preferably, as an improvement, the trigger rod includes a compression rod, a fixed plate, a sliding rod and a baffle which are fixedly connected in sequence, the sliding rod is slidably connected to the positioning plate / frame, one end of the sliding rod is fixed to the fixed plate, and the other end of the sliding rod is fixed to the baffle, the baffle is used to trigger the induction switch, the fixed plate passes through the air avoidance groove, the lower end of the fixed plate is fixed to the compression rod, and the compression rod is used to be pushed against the non-clamped position of the workpiece.

[0014] Beneficial effect: The arrangement of this solution enables the trigger end of the trigger rod to be arranged lower, thereby fully ensuring the use requirements.

[0015] Preferably, as an improvement, a linear bearing is fixed on the positioning plate / frame, and the trigger rod is slidably connected to the linear bearing. The linear bearing of this solution can reduce friction and wear, and improve the movement smoothness and accuracy of the trigger rod.

[0016] Preferably, as an improvement, there are multiple guide openings, and each guide opening corresponds to an in-position sensor, so that there can be multiple workpieces to be taken in accurate positions on a loading table.

[0017] Preferably, as an improvement, a plurality of guide plates are provided above the conveyor line, and a moving channel for the workpiece is formed between adjacent guide plates, and the output end of the moving channel faces the guide port, so that the workpiece can automatically perform a preliminary position calibration during the transmission along the conveyor line.

[0018] Preferably, as an improvement, it also includes a fixedly installed material picking sensor, which is used to sense the entire row of workpieces at the output end. When the material picking sensor does not sense the existence of workpieces at the output end, the conveyor line is controlled to start.

[0019] Preferably, as an improvement, the conveyor line is a chain plate conveyor line. Compared with a belt conveyor line, the chain plate structure of this solution has better wear resistance, which helps to extend the service life of the conveyor line.

[0020] Preferably, as an improvement, a fixedly installed feeding sensor is further included, which is used to sense the Nth / row of workpieces arranged at the output end, and the workpiece closest to the guide port is called the 1st / row of workpieces. Here, the value of N is greater than 1. When the feeding sensor does not sense the workpiece, the conveyor line is controlled to start.

[0021] Beneficial effect: This solution sets a material replenishment sensor so that when there is a shortage of material in the Nth / row of workpieces greater than 1, the conveyor line is controlled to start, thereby avoiding the problem of long-term shortage of material at the output end of the conveyor line affecting production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the utility model (with workpieces placed on the conveyor line).

[0023] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure when there are no workpieces on the conveyor line.

[0024] Figure 3 for Figure 2 Top view of the .

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the in-place detection component in the embodiment of the utility model.

[0026] Figure 5 for Figure 4 main view.

[0027] Figure 6 for Figure 4 Top view of the . DETAILED DESCRIPTION

[0028] The following is further described in detail through specific implementation methods:

[0029] The figure marks in the drawings of the specification include: frame 100, conveyor line 200, in-place detection component 300, positioning plate 1, guide port 11, air avoidance groove 12, in-place sensor 2, trigger rod 21, compression rod 211, fixing plate 212, baffle 213, elastic member 22, induction switch 23, mounting bracket 231, linear bearing 24, guide plate 400, material picking sensor 500, and material replenishing sensor 600.

[0030] Example

[0031] Combination Figures 1 to 6 A workpiece loading platform includes a conveyor line 200 and an in-place detection component 300 installed on a frame 100. The conveyor line 200 is responsible for conveying the workpiece from the input end to the output end. The in-place detection component 300 is located at the output end of the conveyor line 200 and is used to detect whether the workpiece has reached a predetermined position (such as a pickup position).

[0032] The conveyor line 200 is a chain plate conveyor line.

[0033] The in-place detection assembly 300 is composed of a positioning plate 1 and an in-place sensor 2. The positioning plate 1 is fixedly mounted on the frame 100, and a plurality of V-shaped guide openings 11 are processed on the positioning plate 1, and a clearance groove 12 is provided in the center of the guide opening 11, and each guide opening 11 corresponds to an in-place sensor 2.

[0034] In order to guide the workpiece to smoothly enter the guide port 11, a plurality of guide plates 400 are arranged above the conveyor line 200, and the guide plates 400 are fixedly mounted on the frame 100. A moving channel for the workpiece is formed between adjacent guide plates 400, and the output end of the moving channel faces the guide port 11. In this way, the workpiece can be guided by the guide plates 400 during the conveying process and accurately enter the in-place detection area.

[0035] Each in-position sensor 2 includes a trigger rod 21, an elastic member 22 and a sensing switch 23. The sensing switch 23 is fixedly mounted on the positioning plate 1 through a mounting bracket 231. A support frame is fixed on the positioning plate 1. A linear bearing 24 is fixedly mounted on the support frame. The trigger rod 21 is slidably connected to the linear bearing 24. The sliding direction of the trigger rod 21 is parallel to the conveying direction of the conveyor line 200. The sensing switch 23 of this embodiment is a proximity switch.

[0036] The trigger rod 21 includes a compression rod 211, a fixed plate 212, a sliding rod and a baffle 213 which are fixedly connected in sequence. The compression rod 211 is used to abut against the workpiece, and the sliding rod is slidably connected to the linear bearing 24. One end of the sliding rod is fixed to the fixed plate 212, and the other end is fixed to the baffle 213. The baffle 213 and the fixed plate 212 are located on both sides of the linear bearing 24. After the baffle 213 moves, it can block the light of the induction switch 23, thereby triggering the induction switch 23 to send a signal.

[0037] The fixing plate 212 penetrates the avoidance groove 12 on the positioning plate 1, and the compression rod 211 is fixed to the lower end of the fixing plate 212. The compression rod 211 is used to be pushed against by the non-clamping position of the workpiece, so as to realize the movement of the trigger rod 21.

[0038] The elastic member 22 on the trigger rod 21 is a spring, which is sleeved on the slide rod, one end of the spring abuts against the fixed plate 212, and the other end of the spring abuts against the linear bearing 24. The spring is used to provide a reset force for the trigger rod 21. When the workpiece moves close to the guide port 11, the workpiece will push against the compression rod 211, so that the trigger rod 21 moves as a whole toward the induction switch 23. When the trigger rod 21 moves to a certain position, the induction switch 23 will be triggered, thereby sending a signal.

[0039] In order to realize automatic material picking and material replenishment control of the workpieces at the output end, this embodiment also includes a fixedly installed material picking sensor 500 and a material replenishment sensor 600. The material picking sensor 500 is used to sense the entire row of workpieces at the output end. When the material picking sensor 500 does not sense the existence of workpieces at the output end, the conveyor line 200 is controlled to start so that the workpieces on the conveyor line 200 move toward the output end.

[0040] The replenishing sensor 600 is used to sense the Nth row of workpieces arranged at the output end (N is greater than 1). When the replenishing sensor 600 does not sense the workpiece, the conveyor line 200 is also controlled to start to replenish the workpiece. The value of N in this embodiment is 2, so that when there is a missing workpiece in the second row, regardless of whether there is a workpiece at the output end (that is, the first row), the conveyor line 200 is controlled to start, thereby ensuring that there are always workpieces in the second row, avoiding the output end from lacking parts for too long and reducing production efficiency.

[0041] In this embodiment, both the material taking sensor 500 and the material replenishing sensor 600 are opposite-beam photoelectric switches.

[0042] The method of using the workpiece loading platform of this embodiment is as follows:

[0043] S1. Conveyor line 200 feeding: The conveyor line 200 conveys workpieces. When workpieces are present in both the first row and the second row at the output end of the conveyor line 200, the material taking sensor 500 and the material replenishing sensor 600 are both triggered, and the conveyor line 200 stops conveying.

[0044] S2. The picking robot takes the workpiece at the correct position. When the workpiece moves into the guide port 11 along with the conveyor line 200, the workpiece pushes the trigger rod 21 until the trigger rod 21 triggers the sensing switch 23. At this time, the sensing switch 23 senses that there is a workpiece to be picked up at the corresponding position of the guide port 11, which facilitates the picking robot to pick up the workpiece moved to the position to be picked up. In summary, the workpiece loading platform provided in this embodiment realizes automatic detection of the workpiece in place and precise control of the conveyor line 200 by designing the in-place detection component 300, the picking sensor 500 and the replenishing sensor 600. The loading platform has the advantages of simple structure, easy operation, and the ability to accurately deliver the workpiece to the position to be picked up, which is helpful for the subsequent picking robot to accurately pick up the workpiece.

[0045] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A workpiece loading platform, comprising a conveyor line and an in-place detection component located at the output end of the conveyor line, characterized in that: The in-place detection component includes a positioning plate and an in-place sensor. The positioning plate is provided with a guide opening. When the workpiece moves into the guide opening, the in-place sensor can be triggered.

2. A workpiece loading platform according to claim 1, characterized in that: The in-place sensor includes a trigger rod, an elastic member and a sensing switch. The sensing switch is fixedly installed. The trigger rod is slidably connected to a positioning plate or a frame. The sliding direction of the trigger rod is parallel to the conveying direction of the conveyor line. An elastic member is arranged between the trigger rod and the positioning plate / frame. The trigger rod can trigger the sensing switch.

3. A workpiece loading platform according to claim 2, characterized in that: The positioning plate is provided with a clearance groove for avoiding the movement stroke of the trigger rod.

4. A workpiece loading platform according to claim 3, characterized in that: The trigger rod includes a compression rod, a fixed plate, a sliding rod and a baffle which are fixedly connected in sequence. The sliding rod is slidably connected to the positioning plate / frame. One end of the sliding rod is fixed to the fixed plate, and the other end of the sliding rod is fixed to the baffle. The baffle is used to trigger the induction switch. The fixed plate passes through the air avoidance groove. The compression rod is fixed to the lower end of the fixed plate. The compression rod is used to be pushed against the non-clamped position of the workpiece.

5. A workpiece loading platform according to claim 2, characterized in that: A linear bearing is fixed on the positioning plate / frame, and the trigger rod is slidably connected to the linear bearing.

6. A workpiece loading platform according to claim 1, characterized in that: There are multiple guide openings, and each guide opening corresponds to an in-position sensor.

7. A workpiece loading platform according to claim 6, characterized in that: A plurality of guide plates are arranged above the conveying line, and a moving channel for the workpiece is formed between adjacent guide plates, and the output end of the moving channel faces the guide port.

8. A workpiece loading platform according to claim 6, characterized in that: It also includes a fixedly installed material picking sensor, which is used to sense the entire row of workpieces at the output end. When the material picking sensor does not sense the existence of workpieces at the output end, the conveyor line is controlled to start.

9. The workpiece loading platform according to claim 1, characterized in that: The conveyor line is a chain plate conveyor line.

10. A workpiece loading platform according to any one of claims 1 to 9, characterized in that: It also includes a fixedly installed feeding sensor, which is used to sense the Nth / row of workpieces arranged at the output end. The workpiece closest to the guide port is called the 1st / row of workpieces. Here, the value of N is greater than 1. When the feeding sensor does not sense the workpiece, the conveyor line is controlled to start.

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