A production line for batch welding of annular pressed parts of workpieces

Abstract

The present invention provides an assembly line for batch welding of annular pressed parts of workpieces, comprising: a conveying device, a welding station, a control component and a deviation detection device; the conveying device is arranged along a first direction, the conveying device is used to drive the workpiece to move along the first direction, the conveying device comprises a conveyor belt, the height of the first plane of the conveyor belt from the ground is a first set distance, the first plane is used to place the workpiece, and the first direction is a horizontal direction; the deviation detection device is arranged at a first position; the welding station is arranged at a second position, and the distance between the second position and the first position in the first direction is a second set distance; the welding station comprises a grasping device and a welding device. The precision of welding production is improved, thereby improving the reliability of the workpiece.

Description

Technical Field

[0001] The invention relates to the technical field of welding manufacturing, and in particular to an assembly line for batch welding annular pressed parts of workpieces. Background Art

[0002] With the advancement of science and technology, people's requirements for workpiece reliability are getting higher and higher.

[0003] In some pressed workpieces, two parts of the workpiece are pressed together, and the effect after pressing is usually that one part of the workpiece is connected to the other part of the workpiece through an interference fit. Some pressed workpieces need to be welded to improve the reliability of the workpiece structure.

[0004] However, each component in the workpiece has an allowable error value during forging. Therefore, when such components are pressed together, in addition to the workpiece differences caused by local deformation due to pressing, there are also differences in the pressing parts of different workpieces caused by the allowable error value of the components during forging. Both of these differences will cause pressing deviations.

[0005] The existing assembly line for batch welding at the pressing joint of the workpiece does not consider the influence of the pressing deviation on the welding accuracy, resulting in low welding accuracy and unreliable workpieces. Summary of the invention

[0006] The invention provides an assembly line for batch welding annular pressed parts of workpieces, so as to solve the problems of low welding precision and unreliable workpieces in the prior art.

[0007] The present invention discloses an assembly line for batch welding of annular pressing parts of workpieces, comprising: a conveying device, a welding station, a control component and a deviation detection device; the conveying device is arranged along a first direction, the conveying device is used to drive the workpiece to move along the first direction, the conveying device comprises a conveyor belt, the height of the first plane of the conveyor belt from the ground is a first set distance, the first plane is used to place the workpiece, and the first direction is a horizontal direction; the deviation detection device is arranged at a first position, and is used to detect the pressing deviation of the workpiece at a deviation detection position corresponding to the first position on the conveying device; the welding station is arranged at a second position, and the distance between the second position and the first position in the first direction is a second set distance; the welding station comprises a grasping device and a welding device, wherein the grasping device is used to grasp the workpiece moved to a grasping point on the conveying device opposite to the second position, and the welding device is used to weld the pressing part in the workpiece; the control component is used to receive the pressing deviation, and control the welding station to start a preset processing mode according to the pressing deviation.

[0008] The present invention provides an assembly line for batch processing of the pressing part of the workpiece, wherein the deviation detection device detects the deviation of the pressing part of the workpiece to be processed on the conveying device, the control component receives the detected pressing deviation and sends the pressing deviation to the welding station, and the control component sends different processing instructions to the welding device according to different pressing deviations. After being processed by the welding station, the pressed workpiece is continuously transmitted by the conveying device. The precision of the welding process is improved, thereby improving the reliability of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of an assembly line for batch welding of pressed parts of workpieces in one embodiment of the present invention;

[0010] Figure 2 A top view of a welding station in an assembly line for batch welding of pressed joints of workpieces according to an embodiment of the present invention;

[0011] Figure 3 The figure is a schematic diagram of a deviation detection device in an assembly line for batch welding of pressed parts of workpieces according to an embodiment of the present invention. DETAILED DESCRIPTION

[0012] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0013] Figure 1 The figure is a schematic diagram of an assembly line for batch welding of pressed parts of workpieces in one embodiment of the invention.

[0014] like Figure 1As shown, an embodiment of the present invention provides an assembly line for batch welding of annular pressing parts of workpieces, comprising: a conveying device 100, a welding station 200, a control component and a deviation detection device 400; the conveying device 100 is arranged along a first direction, the conveying device 100 is used to drive the workpiece to move along the first direction, the height of the first plane 111 of the conveying device 100 from the ground is a first set distance, the first plane 111 is used to place the workpiece, and the first direction is a horizontal direction; the deviation detection device 400 is arranged at a first position, and is used to detect the pressing deviation of the workpiece located at the deviation detection position corresponding to the first position on the conveying device 100; the welding station 200 is arranged at a second position, and the distance between the second position and the first position in the first direction is a second set distance; the welding station 200 includes a gripping device 210 and a welding device 220, wherein the gripping device 210 is used to grip the workpiece moved to the gripping point on the conveying device 100 opposite to the second position; the welding device 220 is used to weld the pressing part in the workpiece; the control component is used to receive and calculate the pressing deviation, and send the pressing deviation to the welding station 200.

[0015] In the present embodiment, a production line for batch welding of the annular pressing part of the workpiece is provided. The deviation detection device 400 detects the deviation of the pressing part of the workpiece to be processed on the conveying device 100. The control component receives the detected pressing deviation and sends the pressing deviation to the welding station 200. The control component sends different processing instructions to the welding device 220 according to different pressing deviations. After being processed by the welding station 200, the pressed workpiece is continuously transmitted by the conveying device 100. Usually, the pressed workpiece is a centrally symmetrical workpiece. Two grippers can be arranged on the gripper frame of the gripping device 210, and two workpieces can be placed on the two grippers respectively, and the gripper frame can rotate, so that the gripper can carry the workpiece to be processed to the welding device 220 and remove the processed workpiece. At the same time, the gripper frame can be rotated to place the workpiece to be processed on the welding device 220, thereby reducing the time for the gripper 210 to put the processed workpiece back to the gripping point and grab the workpiece to be processed from the gripping point to the welding device 220. When the pressed workpiece is a wheel hub, the spokes are connected to the rim by pressing. During the pressing process, the rim and the spokes may be non-coaxial, resulting in eccentricity. During the pressing process, the rim size may change when the rim is pressed into a spoke with a diameter larger than the rim, affecting the shape of the rim and spokes at the pressing point. During the pressing process, the rim and the spokes may have slight differences in the sizes of the rims and spokes of the same batch due to the allowable error during forging, resulting in differences in the pressing of the rim and spokes. Therefore, the pressing deviation detected by the deviation detection device 400 can be the distance between the axis of the rim and the spoke projected on the first plane 111; it can also be the maximum length from the center of the inner circle of the rim to the outer circle of the spoke or from the center of the outer circle of the spoke to the inner circle of the rim at the pressing position on the first plane 111; it can also be the distance between the two parts of the workpiece after pressing; it can also be the size of each component at the pressing point after the hub is pressed, etc., which is convenient for detecting the size parameters of the workpiece. The wheel hub to be processed is first transmitted to the deviation detection position corresponding to the first position through the conveying device 100. The first position where the deviation detection device 400 is located can be set on any one of the two sides of the conveying device 100, or can be clamped on the conveying device 100, as long as the deviation detection device 400 can be installed to smoothly detect the pressing deviation of the workpiece located at the deviation detection position. After the deviation detection device 400 located at the first position detects the pressing deviation of the wheel hub, the pressing deviation is transmitted to the control component as the first information. After the wheel hub is detected by the deviation detection device 400, it comes to the grabbing point corresponding to the second position through the conveying device 100. At the same time, the control component converts the first information into a preset processing method, that is, the second information and transmits it to the welding station 200.The second information may include information outside the threshold and information inside the threshold. When the second information is information inside the threshold, the grasping device 210 grasps the wheel hub at the grasping point. When the second information is information outside the threshold, the grasping device 210 does not perform any operation on the wheel hub at the grasping point. The wheel hub with the pressing deviation outside the threshold is directly transmitted through the conveying device 100. The second information can also be classification information or specific size information. The control component can first classify according to the pressing deviation, and then the control component transmits the classified second information as the first processing instruction to the welding device 220. The welding device 220 performs different welding according to different processing instructions. After the welding device 220 completes the welding, the grasping device 210 removes the processed wheel hub from the welding device 220 and puts the processed wheel hub back to the conveying device 100, which is then transmitted by the conveying device 100. Among them, the deviation detection device 400 and the welding station 200 can be connected to the control component by wire or wirelessly. The reliability of the annular pressing part of the workpiece is improved.

[0016] In this embodiment, the control component includes a central processing unit 310, a detection control device 320, and a welding control device 330; wherein the detection control device 320 is arranged on the deviation detection device 400, and includes a detection sensor 321 and a detection controller 322, wherein the detection sensor 321 is used to sense the pressing deviation of the workpiece and transmit the pressing deviation to the detection controller 322, and the detection controller 322 transmits the received pressing deviation to the central processing unit 310, and the central processing unit 310 is used to classify the workpiece according to the received pressing deviation and issue a first processing instruction to the welding control device 330 according to the classification; the welding control device 330 includes a grasping controller 331 and a welding controller 332, wherein the grasping controller 331 is arranged on the grasping device 210 for making the grasping device 210 perform a grasping action according to the first processing instruction, and the welding controller 332 is arranged on the welding device 220 for controlling the welding device 220 to perform a welding action according to the first processing instruction. When the pressed workpiece is a wheel hub, the position to be welded is the pressing point between the spoke and the rim, and the wheel hub to be pressed is conveyed by the conveyor belt 110 to the deviation detection point, and the central processing unit 310 sends a detection instruction to the detection controller 322 in the detection control device 320, and the detection controller 322 commands the detection sensor 321 to detect the pressing deviation. After the detection is completed, the detection sensor 321 sends the detected pressing deviation to the detection controller 322, and the detection controller 322 sends the pressing deviation to the central processing unit 310. Before the detection, the pressing standard value can be input into the central processing unit 310, and the pressing threshold value can be set according to the pressing standard value, and then the pressed workpieces with different threshold ranges are classified. A variety of welding modes are arranged in the welding controller 332, and the various welding modes correspond to the classification of different pressed workpieces one by one; the central processing unit 310 classifies the pressed workpieces with different pressing deviations, and sends the type to the welding controller 332, and the welding controller 332 controls the welding device 220 to execute different welding modes according to the classification. Different welding devices 220 have different performances, and a variety of different welding modes can be set by the welding control device 330. Therefore, the pressed workpieces within the pressing threshold can be classified according to the pressing deviation according to the performance of the welding device 220. For example, the pressing standard value of the pressed workpiece is input into the central processor 310 as 160mm, and the pressing threshold of the workpiece is set to 155-165mm according to the strength requirements of the workpiece; the welding control device 330 can control the welding device 220 to perform 10 different welding modes at most, and the pressing threshold can be divided into ten categories, namely 155-156mm; 156-157mm; 157-158mm; 158-159mm; 159-160mm; 160-161mm; 161-162mm; 162-163mm; 163-164mm; 164-165mm.The ten types correspond to the constant welding modes in the welding control device 330: Ⅰ, Ⅱ...X. When the pressing deviation received by the central processor 310 is 156.33mm, the workpiece is divided into the second category and sent to the welding control device 330. The grabbing controller 331 and the welding controller 332 respond at the same time. The grabbing controller 331 controls the grabbing device 210 to grab the workpiece to be processed onto the welding device 220, and then the welding controller 332 controls the welder to execute the Ⅱ welding mode. According to the above threshold, a type of pressing deviation outside the threshold can be added, that is, the pressing deviation is less than 155mm or greater than 165mm. If the central processor 310 receives a pressing deviation of 150mm, the workpiece is divided into a pressing deviation outside the threshold and sent to the welding control device 330. At this time, only the grabbing controller 331 responds and does not perform any operation on the workpiece to be processed, so that the workpiece to be processed with the pressing deviation outside the threshold continues to be transported by the conveyor belt 110, and the workpiece with the pressing deviation outside the threshold can be transported to the designated position on the assembly line for unified processing or removed from the assembly line. After the welding device 220 completes welding the pressed workpiece, the welding controller 332 sends a welding completion instruction, and the grabbing controller 331 controls the grabbing device 210 to remove the processed workpiece from the welding device 220 and place it on the conveyor belt 110 according to the welding completion instruction; the welding completion instruction can be sent directly to the grabbing controller 331 through the welding controller 332, or the welding completion instruction can be first sent to the central processing unit 310 through the welding controller 332, and then the central processing unit 310 sends the welding completion instruction to the grabbing controller 331. The central processing unit 310 communicates with other components in the control component through connection, so the connection between the components inside the control component can be a wired connection or a wireless connection. In order to ensure the efficiency and accuracy of signal transmission, the connection between the control components is preferably a wired connection.

[0017] In this embodiment, the conveying device 100 is a roller conveyor, the conveyor belt 110 is a roller, the conveying device 100 also includes a roller stopping device, the roller stopping device includes a power element, a blocking element and a transmission chain, the roller end connected to the transmission chain is sleeved with a gear, the chain is sleeved on the gear and connected to the power element at the same time, the power element is arranged on the conveying device 100 and located below the roller, the power element drives the roller to rotate around the axis by driving the transmission chain to rotate; the blocking element is arranged on the conveying device 100 and is separated from the roller connected to the transmission chain in the roller stopping device by a third set distance in the first direction, and is used to limit the movement of the workpiece located at the third set distance from the roller connected to the transmission chain in the first direction; the control component also includes a roller control device, the roller control device also includes a roller power control device and a roller limit control device, the roller control device is connected to the central processor 310, and the roller power control device is connected to the power element, and is used to control the start, stop and running speed of the power element, and the roller limit control device is used to control the blocking element to reciprocate along the second direction perpendicular to the first plane 111. A roller stopping device is provided on the conveying device 100 for accurately positioning the workpiece to be measured on the conveyor belt 110, and each power element controls one roller. The provision of the blocking element enables the workpiece to remain relatively still with the deviation detection device 400 and the grasping device 210 when it reaches the deviation measurement location or the grasping point, so as to improve the accuracy of the measurement and the stability of the grasping action of the grasping device 210. Therefore, the blocking element can be provided perpendicular to the first plane 111 at the farthest end of the deviation detection location and the grasping point on the conveying device 100 along the first direction. The roller connected to the transmission chain is spaced from the roller stopping device by a third set distance, and the third set distance is usually greater than the length of a workpiece. The third set distance is set so that several groups of rollers not connected to the power element are spaced from the roller connected to the transmission chain and the roller stopping device. When the rollers connected to the power element stop rotating, these rollers not connected to the power element can decelerate the workpiece to reduce the loss of the workpiece and the roller stopping device caused by the excessive speed of the workpiece when the workpiece reaches the roller stopping device. Of course, the third set distance should not be too large, and it must be ensured that the roller can reach the roller controlled by the next power element after the power element is turned off. At least two groups of roller stopping devices are arranged on the assembly line, and at the intersection position of the two groups of roller stopping devices, the distance between the first roller stopping device, i.e. the blocking element in the upper group of roller stopping devices, and the second roller stopping device, i.e. the roller controlled by the power element in the lower group of roller stopping devices, is at most the maximum value of the projection of the contact surface between the limited workpiece and the first plane 111 in the second plane after the workpiece is limited. The second plane is a perpendicular plane to the first plane 111 along the first direction, so as to ensure that the workpiece can continue to be transported on the conveyor belt 110 after the workpiece is limited.A photoelectric sensing device can be provided on the conveying device 100. When the first workpiece is about to reach the deviation measurement location, the photoelectric sensing device senses the workpiece and sends a workpiece arrival instruction to the central processor 310. The central processor 310 receives the workpiece arrival instruction and then sends a stop instruction to the first roller control device. After receiving the stop instruction, the first roller power control device commands the power element to stop working. After receiving the stop instruction, the first roller limit control device controls the blocking element to extend upward from the first plane 111 of the roller along the second direction to block the workpiece to the deviation measurement location. After detecting the pressing deviation of the workpiece, the deviation detection device 400 sends the detection data to the central processor 310. After receiving the data, the central processor 310 sends a start instruction to the first and second roller control devices. After receiving the start instruction, the first roller limit control device controls the blocking element to drop back below the first plane 111. The second roller control device controls the second power element to rotate the roller connected to the second power element so that the first workpiece continues to be transported along the first direction. At the same time, the first roller control device controls the first power element to transfer the second workpiece to the deviation detection location. The working principle of the roller control device and roller stop device on multiple workpieces and different processing stations is the same, so it will not be repeated. Among them, the central processor 310 can not only control the start and end of the workpiece movement through the roller power control device, but also adjust the roller speed according to different processing requirements and thus adjust the moving speed of the workpiece on the conveyor belt 110.

[0018] In this embodiment, a protection device is also provided on the conveying device 100. The protection device is provided on the two side walls corresponding to the roller ends on the roller conveyor, and is used to monitor the working state of the deviation detection device 400 or the welding station 200. At the same time, the protection device is connected to the central processor 310. The protection device can be a photoelectric sensor. When the protection device detects that there are workpieces waiting to be grasped by the grasping device 210 in the set area, it sends a danger instruction to the central processor 310. The central processor 310 sends a control instruction to the roller control device outside the set area located in the opposite direction of the first direction to extend the arrival of the workpiece to be processed outside the set area in the opposite direction of the first direction to avoid collision between the workpieces at the grasping point or between the workpiece and the grasping device 210. According to the processing requirements, the control instruction can be either a stop instruction or a deceleration instruction. The roller control device outside the set area stops the power element from driving the roller to rotate or slows down the speed of the power element driving the roller to rotate according to the control instruction. The central processor 310 can send different instructions to different roller control devices at the same time as needed. When the workpiece located in the set area leaves the set area after being processed, the protection device sends a safety instruction to the central processor 310, and the central processor 310 sends a start instruction or an acceleration instruction to the roller control device so that the workpiece to be processed located outside the set area in the opposite direction of the first direction can be transported to the set area. Of course, the protection device can also be set on the side walls of the roller conveyor on both sides of the deviation detection location along the first direction to ensure that there is no collision between the workpieces located at the deviation detection location or between the workpiece and the deviation detection device 400. At the same time, a roller stopper can be set in the opposite direction of the first direction of the protection device, and a blocking element can be set at the end point of one end of the protection device in the opposite direction of the first direction, so as to shorten the time for the workpiece to be processed located outside the set area to move to the set area while ensuring that there is no collision in the set area.

[0019] In this embodiment, a counting device is also provided on the conveying device 100, and the counting device is connected to the central processing unit 310, and the deviation detection device 400 is provided on either side of the first direction; it is used to detect the number of workpieces to be processed between the deviation detection and the grasping position. The distance between the second position and the first position in the first direction is the second set distance, and the second set distance is also the distance between the deviation detection position and the grasping position. The second set distance can place multiple workpieces to be processed, and multiple workpieces to be processed are placed between the deviation detection position and the grasping position to improve the work efficiency of the assembly line. At this time, since the pressing deviation information detected by the deviation detection device 400 and the information of the grasping device 210 grasping the workpiece have a time difference and are not synchronized, the central processing unit 310 is required to convert the delayed information according to the number of workpieces provided by the counting device to ensure that the welding device 220 can correctly perform welding processing on the workpiece corresponding to the pressing deviation according to the pressing deviation. The two sides of the deviation detection device 400 along the first direction are respectively the first side and the second side. When the counting device is set on the first side, the number recorded is "1" more than when the counting device is set on the second side. The central processor 310 can perform different digital recognition procedures according to the different positions of the counting device. The counting device can be a photoelectric sensor.

[0020] Figure 2 The figure is a top view of a welding station in an assembly line for batch welding of pressed joints of workpieces in one embodiment of the present invention.

[0021] like Figure 2 As shown, in this embodiment, the second position is located on one side of the transmission device, wherein the gripping device 210 is closer to the conveyor belt 110 than the welding device 220 in the third direction, and the third direction is parallel to the first plane 111 and perpendicular to the conveyor belt 110; wherein, there are multiple groups of welding devices 220, and the welding work of the multiple groups of welding devices 220 does not affect each other and is located within the maximum working distance of the gripping device 210. Compared with the welding device 220, the gripping device 210 is closer to the conveyor belt 110 in the third direction, and arranging the gripping device 210 between the welding device 220 and the conveyor belt 110 is conducive to improving the efficiency of the gripping device 210 in transferring the workpiece from the gripping point to the welding device 220. A plurality of welding devices 220 are set up. Because it takes time for the welding device 220 to perform the welding process, matching a grasping device 210 with a plurality of welding devices 220 can speed up the production rhythm and improve the production efficiency. The distance between the plurality of welding devices 220 must be at least not affect the individual welding work of each welding device 220, and the maximum distance must not be greater than the maximum working distance of the grasping device 210.

[0022] In this embodiment, the conveyor belt 110 includes a first conveyor belt 112 and a second conveyor belt 113, and the first conveyor belt 112 and the second conveyor belt 113 are arranged in parallel; the first conveyor belt 112 is located between the second conveyor belt 113 and the welding station 200, and the height of the first conveyor belt 112 in the second direction is lower than the height of the second conveyor belt 113 in the second direction, and the distance between the first conveyor belt 112 and the first plane 111 of the second conveyor belt 113 is greater than the height of a workpiece that reaches the grasping point. There is a height difference between the first conveyor belt 112 and the second conveyor belt 113, so that the workpiece on the first conveyor belt 112 does not hit the grasping device 210 when the grasping device 210 grasps the workpiece on the second conveyor belt 113. Considering different production processes, the same workpiece may have different postures when arriving at the grasping point, so the height difference between the first conveyor belt 112 and the first plane 111 of the second conveyor belt 113 is greater than the maximum height of the workpiece located at the grasping point during processing.

[0023] In this embodiment, the deviation detection device 400 is mounted on the first conveyor belt 112 or the second conveyor belt 113, and the first conveyor belt 112 or the second conveyor belt 113 where the deviation detection device 400 is located is the conveyor belt 110 to be processed, and the other conveyor belt 110 is the processed conveyor belt 110. The deviation detection device 400 is used to detect the pressing deviation of the workpiece to be processed, so the conveyor belt 110 where the deviation detection device 400 is located is the conveyor belt 110 to be processed for placing the workpiece to be processed, and the other conveyor belt 110 is the processed conveyor belt 110 for placing the processed workpiece.

[0024] There may be multiple groups of welding stations 200, which are arranged in a first direction, and the first conveyor belt 112 is located between the second conveyor belt 113 and the multiple groups of welding stations 200, and the central processor 310 controls the multiple groups of welding stations 200. When there is no welding device 220 in the first group of welding stations 200 in a waiting state so that the workpieces arriving at the corresponding grabbing points of the first group of welding stations 200 cannot be processed, the welding control device 330 on the first group of welding stations 200 sends a full load instruction to the central processor 310, and the central processor 310 sends an instruction to the roller control device, so that the workpieces arriving at the grabbing points on the first group of welding stations 200 continue to come to the grabbing points of the second group of welding stations 200 along the to-be-processed conveyor belt 110, waiting for the welding device 220 of the second group of welding stations 200 to process them. The central processor 310 can control the coordination between multiple groups of welding stations 200. The central processor 310 can be a computer that controls all control components, or the central processor 310 can be multiple gripping devices 210 respectively set in multiple groups of welding stations 200.

[0025] Figure 3The figure is a schematic diagram of a deviation detection device in an assembly line for batch welding of pressed parts of workpieces according to an embodiment of the present invention.

[0026] like Figure 3As shown, in this embodiment, the pressed workpiece includes a first part and a second part; the second part is a cylindrical workpiece and is provided with a connecting hole inside, the first part is pressed into the second part from the second surface of the second part along the fourth direction, and the first supporting surface of the first part first enters the second part, and the fourth direction is perpendicular to the second surface; after pressing, the first supporting surface of the first part is located in the fourth direction of the second surface of the second part; the deviation detection device 400 includes a bracket 410 and a detection part 420, the bracket 410 is mounted on the conveyor belt 110, the detection part 420 is connected to the bracket 410, and the detection part 420 is used to measure the height of the first part in the fourth direction after pressing. The pressing deviation is the height of the first part in the fourth direction. The height can be used as a deviation value for measuring the first part during forging, and can also be used as a reference value for the deformation of the workpiece during the pressing process. In addition to detecting the height of the first part in the fourth direction, the height of the second part in the fourth direction can also be detected. When the workpiece is a pressed workpiece in which the first part does not completely enter the second part after pressing, the second surface is located in the fourth direction of the second supporting surface. In this case, when the second surface of the workpiece is placed on the first plane 111 and is transferred to the deviation detection location, the detection unit 420 is arranged on the bracket 410 and extends from the first surface into the workpiece and moves along the fourth direction to the first supporting surface. At this time, the pressing deviation is the height from the first supporting surface to the first plane 111. When the second surface of the workpiece is placed perpendicular to the first plane 111 and transferred to the deviation detection location, the deviation detection device 400 may further include a limiting part, which is used to limit the position of the second supporting surface of the workpiece when the deviation detection device 400 performs detection, and the limiting part can not hinder the transportation of the workpiece in the non-measurement state when the workpiece is transported on the conveyor belt 110. When the workpiece is a workpiece in which the first part completely enters the second part after pressing, the second supporting surface can also be limited by setting a blocking part to measure the pressing deviation.The distance between the second supporting surface and the first supporting surface is the distance between the detection part 420 and the limiting part. Usually, the postures of different workpieces to be processed when they arrive at the deviation detection point are the same, that is, under normal circumstances, the working surfaces of different workpieces are parallel. Therefore, the limiting part can be set parallel to the second supporting surface of the workpiece. If the measurement position of the limiting part limits the transmission of the measured workpiece to the first direction, the bracket 410 can drive the limiting part to move along the fourth direction so as not to hinder the workpiece to be transmitted along the first direction; when the second surface of the workpiece contacts the first plane 111 for transportation, the limiting part can be set under the conveyor belt 110, and the limiting part moves along the second direction. When the workpiece is transmitted on the conveyor belt 110, the limiting part is located below the first plane 111 of the conveyor belt 110. When the workpiece reaches the deviation detection point, the limiting part moves upward along the second direction driven by the connecting device, and then lifts the workpiece from the first plane 111, and then measures the distance between the limiting part and the detection part 420 more accurately.

[0027] In summary, the present invention provides an assembly line for batch welding of annular pressing parts of workpieces, comprising: a conveying device, a welding station, a control component and a deviation detection device; the conveying device is arranged along a first direction, the conveying device is used to drive the workpiece to move along the first direction, the conveying device comprises a conveyor belt, the height of the first plane of the conveyor belt from the ground is a first set distance, the first plane is used to place the workpiece, and the first direction is a horizontal direction; the deviation detection device is arranged at a first position, and is used to detect the pressing deviation of the workpiece at a deviation detection position corresponding to the first position on the conveying device; the welding station is arranged at a second position, and the distance between the second position and the first position in the first direction is a second set distance; the welding station comprises a grasping device and a welding device, wherein the grasping device is used to grasp the workpiece moved to a grasping point on the conveying device opposite to the second position, and the welding device is used to weld the pressing part in the workpiece; the control component is used to receive the pressing deviation, and control the welding station to start a preset processing method according to the pressing deviation. The deviation detection device detects the deviation of the pressed part of the workpiece to be processed on the conveying device. The control component receives the detected pressed deviation and sends the pressed deviation to the welding station. The control component sends different processing instructions to the welding device according to different pressed deviations. After being processed by the welding station, the pressed workpiece is continuously transmitted by the conveying device. The accuracy of the welding process is improved, thereby improving the reliability of the workpiece.

[0028] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0029] In addition, 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. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A production line for batch welding of annular pressed parts of workpieces, characterized in that: include: Conveyors, welding stations, control components and deviation detection devices; The conveying device is arranged along a first direction, and is used to drive the workpiece to move along the first direction. The conveying device comprises a conveyor belt, and the height of the first plane of the conveyor belt from the ground is a first set distance, the first plane is used to place the workpiece, and the first direction is a horizontal direction; The deviation detection device is arranged at a first position, and is used to detect the pressing deviation of the workpiece at a deviation detection position on the conveying device corresponding to the first position; The welding station is arranged at a second position, and the distance between the second position and the first position in the first direction is a second set distance; the welding station comprises a grasping device and a welding device, wherein the grasping device is used to grasp the workpiece moved to a grasping point on the conveying device opposite to the second position, and the welding device is used to weld the pressing part in the workpiece; The control component is used to receive the pressing deviation and control the welding station to start a preset processing mode according to the pressing deviation; The control component includes a central processing unit, a detection control device, and a welding control device; wherein the detection control device is arranged on the deviation detection device, and includes a detection sensor and a detection controller, wherein the detection sensor is used to sense the pressing deviation of the workpiece and transmit the pressing deviation to the detection controller, and the detection controller transmits the received pressing deviation to the central processing unit, and the central processing unit is used to classify the workpiece according to the received pressing deviation and issue a first processing instruction to the welding control device according to the classification; the welding control device includes a grasping controller and a welding controller, wherein the grasping controller is arranged on the grasping device and is used to make the grasping device perform a grasping action according to the first processing instruction, and the welding controller is arranged on the welding device and is used to control the welding device to perform a welding action according to the first processing instruction; The conveying device is a roller conveyor, the conveyor belt is a roller, the conveying device also includes a roller stopping device, the roller stopping device includes a power element, a blocking element and a transmission chain, the roller end connected to the transmission chain is sleeved with a gear, the chain is sleeved on the gear and connected to the power element at the same time, the power element is arranged on the conveying device and located below the roller, the power element drives the roller to rotate around the axis by driving the transmission chain to rotate; the blocking element is arranged on the conveying device and is separated from the roller connected to the transmission chain in the roller stopping device by a third set distance along the first direction, and is used to limit the movement of the workpiece located at the third set distance from the roller connected to the transmission chain along the first direction; The control assembly further includes a roller control device, and the roller control device further includes a roller power control device and a roller limit control device, wherein the roller control device is connected to the central processor, and the roller power control device is connected to the power element, and is used to control the start, stop and running speed of the power element, and the roller limit control device is used to control the blocking element to reciprocate in a second direction perpendicular to the first plane; The conveying device is also provided with a protection device, which is arranged in a certain area on both side walls of the roller conveyor corresponding to the roller end, and the area is a set safety area of ​​the grabbing point along the first direction and the opposite direction of the first direction, which is used to monitor the working state of the welding station, and the protection device is connected to the central processor; A counting device is also provided on the conveying device, the counting device is connected to the central processing unit, and the counting device is on either side of the deviation detection device along the first direction, and is used to detect the number of workpieces to be processed between the deviation detection and the grasping position.

2. The assembly line for batch welding of annular pressed parts of workpieces according to claim 1, characterized in that: The second position is located on one side of the conveying device, wherein the grasping device is closer to the conveyor belt than the welding device in a third direction, and the third direction is parallel to the first plane and perpendicular to the conveyor belt; wherein there are multiple groups of welding devices, and the welding work of the multiple groups of welding devices does not affect each other and are all located within the maximum working distance of the grasping device.

3. The assembly line for batch welding of annular pressed parts of workpieces according to claim 2, characterized in that: The conveyor belt includes a first conveyor belt and a second conveyor belt, and the first conveyor belt is arranged in parallel with the second conveyor belt; the first conveyor belt is located between the second conveyor belt and the welding station, and the height of the first conveyor belt in the second direction is lower than the height of the second conveyor belt in the second direction, and the height difference between the first plane of the first conveyor belt and the second conveyor belt is greater than the height of a workpiece reaching a grabbing point position.

4. The assembly line for batch welding of annular pressed parts of workpieces according to claim 3, characterized in that: The deviation detection device is mounted on the first conveyor belt or the second conveyor belt, and the first conveyor belt or the second conveyor belt where the deviation detection device is located is the conveyor belt to be processed, and the other conveyor belt is the processed conveyor belt.

5. The assembly line for batch welding of annular pressed parts of workpieces according to claim 4, characterized in that: There are multiple groups of welding stations, which are arranged in sequence along the first direction, and the first conveyor belt is located between the second conveyor belt and the multiple groups of welding stations, and the central processing unit controls the multiple groups of welding stations.

6. The assembly line for batch welding of annular pressed parts of workpieces according to claim 5, characterized in that: The pressed workpiece includes a first part and a second part; the second part is a cylindrical workpiece and is provided with a connecting hole inside, the first part is pressed into the second part from the second surface of the second part along a fourth direction, and the first supporting surface of the first part first enters the second part, and the fourth direction is perpendicular to the second surface; after pressing, the first supporting surface of the first part is located in the fourth direction of the second surface of the second part; the deviation detection device includes a bracket and a detection part, the bracket is mounted on the conveyor belt, the detection part is connected to the bracket, and the detection part is used to measure the height of the first part in the fourth direction after pressing.

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