CN109530991B

CN109530991B - Welding production system

Info

Publication number: CN109530991B
Application number: CN201811648987.2A
Authority: CN
Inventors: 李汪; 吴茜茜
Original assignee: Hangzhou Hanrong Intelligent Technology Co ltd
Current assignee: Hangzhou Hanrong Intelligent Technology Co ltd
Priority date: 2018-12-30
Filing date: 2018-12-30
Publication date: 2021-02-19
Anticipated expiration: 2038-12-30
Also published as: CN109530991A

Abstract

The invention discloses a welding production system, which is used for a welding processing assembly line and comprises: the device comprises a control unit and an execution unit, wherein the execution unit comprises a sensing unit, a deviation detection unit, a control unit, a processing unit, a blocking unit and an alarm unit; the sensing unit is arranged on the production line and used for sensing the position of a workpiece; the deviation detection unit is used for carrying out deviation detection on the workpiece blocked at the deviation detection position by the blocking unit and sending a detected first deviation value to the control unit; the control unit is used for receiving the first deviation value of the workpiece sent by the deviation detection unit and processing the first deviation value; the processing units are provided with a plurality of groups, the plurality of groups of processing units are sequentially arranged along the conveying direction of the conveying belt, and each processing unit comprises a grabbing device and a welding device; the blocking unit is used for executing a blocking action according to the control instruction; and the alarm unit is used for monitoring the quantity of the equipment with abnormal working state in the processing unit. Thereby improving the welding precision of the welding production line.

Description

Welding production system

Technical Field

The invention relates to the field of welding production, in particular to a welding production system.

Background

With the progress of science and technology, people have higher and higher requirements on the reliability of workpieces.

In some press-fit workpieces, two parts of the workpiece are press-fit, and the effect after press-fit is that one part of the workpiece is connected to the other part of the workpiece through interference fit. And the reliability of the structure of the workpiece is improved by welding the pressed part of the workpiece which is partially pressed. Meanwhile, in order to improve the welding efficiency, a plurality of groups of welding units are generally arranged to weld workpieces respectively.

However, each part in the workpiece has an allowable error value during forging, so that when such a part is pressed, the pressed part has a workpiece difference caused by local deformation due to pressing, and also includes a difference at the pressed part of different workpieces caused by the allowable error value during forging of the part, and both the two differences generate pressing deviation;

the existing assembly line for batch welding of workpiece pressing parts does not consider the influence of pressing deviation on welding precision, so that the welding precision is low and the workpieces are unreliable.

Disclosure of Invention

To solve the above problems, the present invention provides a welding production system.

The invention provides a welding production system, which is used for a welding processing line and is characterized by comprising the following components: the device comprises a control unit and an execution unit, wherein the execution unit comprises a sensing unit, a deviation detection unit, a control unit, a processing unit, a blocking unit and an alarm unit; the sensing unit is arranged on the production line and used for sensing the position of a workpiece; the deviation detection unit is used for carrying out deviation detection on the workpiece blocked at the deviation detection position by the blocking unit and sending a detected first deviation value to the control unit; the deviation detection position is a position on the conveying belt corresponding to the deviation detection unit; the control unit is used for receiving the first deviation value of the workpiece sent by the deviation detection unit, processing the first deviation value into a second deviation value, storing the second deviation value according to the measurement sequence of the workpiece, and sending a first machining instruction to the machining unit for machining the corresponding workpiece according to the processed second deviation value; the processing unit is also used for selecting the processing unit in an idle state from the plurality of processing units as a target processing unit; the processing units are provided with a plurality of groups, the processing units are sequentially arranged along the conveying direction of the conveying belt, each processing unit comprises a plurality of grabbing devices and welding devices, the welding devices are used for welding workpieces, the grabbing devices are used for grabbing the workpieces blocked by the blocking units at the grabbing points onto the welding devices and grabbing the welded workpieces onto the conveying belt through the welding devices; the grabbing point is positioned on the conveying belt and corresponds to the grabbing device; the plurality of groups of processing units send the working states of the gripping devices and the welding devices to the control unit in real time; the blocking unit is used for executing a blocking action according to the instruction sent by the control unit so as to limit the workpiece to move on the conveyor belt along the conveying direction and comprises a first blocking unit and a second blocking unit, wherein the first blocking unit is used for blocking the workpiece at the deviation detection position, and the second blocking unit is used for blocking the workpiece at the grabbing point; and the alarm unit is connected with the control unit and is used for monitoring the number of the devices with abnormal working states in the processing unit.

The welding production system provided by the invention can detect the deviation of the workpiece to be processed through the deviation detection device before welding, the deviation detection device sends the detected workpiece deviation to the control unit, and the control unit screens the workpiece to be processed according to the workpiece deviation and classifies the workpiece according to the workpiece, so that the processing unit can execute different welding programs according to different workpiece types, and the welding precision of a welding production line is further improved. The processing units are provided with a plurality of groups, and the plurality of groups of processing units respectively execute grabbing and welding of the workpieces. The welding device further comprises an alarm device for monitoring abnormal devices in the machining unit in real time, so that the efficiency of a welding assembly line is improved, the welding machining precision is improved, and meanwhile, the stability of welding work is improved. The conveyor belt in the invention is preferably a roller conveyor belt, the first blocking unit extends from the deviation detection position along the direction opposite to the conveying direction, and the second blocking unit extends from the grabbing point along the direction opposite to the conveying direction; the induction unit is arranged in the blocking unit along the direction opposite to the conveying direction, so that the workpiece passes through the induction unit before reaching the deviation detection unit and reaching the deviation detection position, the induction unit positioned in front of the first blocking unit induces the workpiece and then sends a workpiece reaching instruction to the control unit, the control unit sends a blocking instruction to the first blocking unit, and the first blocking unit executes a blocking action according to the blocking instruction, so that the workpiece is limited to move on the conveying belt along the conveying direction, and then the workpiece is blocked at the deviation detection position, and meanwhile, the first blocking unit sends a successful blocking instruction to the control unit after successfully blocking the workpiece; after the workpiece to be detected is blocked at the deviation detection position, the control unit sends a deviation detection instruction to the deviation detection unit, the deviation detection unit performs deviation detection on the workpiece to be detected, and the detected first deviation value is sent to the control unit after the deviation detection unit finishes detection; the control unit receives a first deviation value sent by the deviation detection unit, and then sends a stopping blocking instruction to the first blocking unit, the blocking unit stops blocking the workpiece after receiving the stopping blocking instruction, meanwhile, the first deviation value is processed into a second deviation value in the control unit, and the control unit stores the obtained second deviation value according to the arrival sequence of the workpiece after obtaining the second deviation value; the plurality of processing units update the processing states to the control unit in real time, and the control unit selects the processing unit in an idle state from the plurality of processing units as a target processing unit after obtaining the second deviation value; after the target processing unit corresponding to the workpiece is determined, the workpiece is conveyed to a grabbing point where the target processing unit is located along the conveying belt, and after the sensing device in front of a second blocking unit of the grabbing point senses that the workpiece reaches the target processing unit, the second blocking unit of the target processing unit executes blocking work to block the workpiece to be processed at the grabbing point of the target processing unit; after the workpiece to be machined is blocked at the grabbing point of the target machining unit, the control unit sends a first machining instruction to the target machining unit, and the target machining unit receives the first machining instruction and performs welding machining on the workpiece located at the grabbing point according to the first machining instruction; the plurality of processing units update the processing state to the control unit in real time, and meanwhile, the control unit also updates the device information of the processing units in the abnormal state to the alarm unit in real time. The sensing unit may be a photoelectric sensor. The blocking unit comprises a blocking part, the blocking part can be a baffle capable of lifting or a roller capable of lifting on a flow line, the baffle can be lifted or the roller can be lifted when the blocking action is executed, so that a workpiece is blocked in front of the lifted baffle or the lifted roller, and the direction from the front to the back is the conveying direction of the conveying belt. The deviation detection can be the eccentric size caused by pressing before welding or the machining tolerance size of the workpiece. The first deviation value is converted into a second deviation value, the first pressing deviation is classified, the class corresponding to the classified workpiece is the second deviation value, and the classified class number is set by considering various factors such as production requirements, memory capacity of a control unit and the like, so that the workpiece can be modified before processing according to different production conditions. And classifying the first deviation values according to corresponding preset categories to obtain second deviation values, wherein each second deviation value corresponds to different welding programs, the welding programs and the grabbing programs jointly form a first machining instruction, the welding programs control the welding device to weld the workpiece, and the grabbing programs control the grabbing device to grab the workpiece from the grabbing point to the welding device. When the second deviation value is stored, the stored sequence is in one-to-one correspondence with the sequence of the processed workpieces, so as to ensure that the welded workpieces grabbed by the processing unit are matched with the first processing instruction received by the processing unit when a plurality of workpieces exist on the conveyor belt. The working state may include a to-be-machined state, a machining state, an idle state, and an abnormal state. The updated information of the alarm unit comprises position information, number information and the like which can reflect the positions of all abnormal devices, the devices comprise a gripping device and a welding device, and the alarm unit is arranged to ensure that an operator can repair the devices with abnormal states to ensure the production efficiency of the welding production line.

Drawings

FIG. 1 is a schematic diagram of a welding production system according to an embodiment of the present invention;

fig. 2 is a schematic diagram illustrating an operation of an alarm device in a welding production system according to an embodiment of the present invention;

fig. 3 is a schematic working diagram of a welding device for selectively processing a workpiece to be processed in a welding production system according to an embodiment of the present invention.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 is a schematic diagram of a welding production system according to an embodiment of the present invention.

The invention provides a welding production system, which is used for a welding production line and is characterized by comprising the following components: the device comprises a control unit and an execution unit, wherein the execution unit comprises a sensing unit, a deviation detection unit, a control unit, a processing unit, a blocking unit and an alarm unit; the sensing unit is arranged on the production line and used for sensing the position of a workpiece; the deviation detection unit is used for carrying out deviation detection on the workpiece blocked at the deviation detection position by the blocking unit and sending a detected first deviation value to the control unit; the deviation detection position is a position on the conveying belt corresponding to the deviation detection unit; the control unit is used for receiving the first deviation value of the workpiece sent by the deviation detection unit, processing the first deviation value into a second deviation value, storing the second deviation value according to the measurement sequence of the workpiece, and sending a first machining instruction to the machining unit for machining the corresponding workpiece according to the processed second deviation value; the processing unit is also used for selecting the processing unit in an idle state from the plurality of processing units as a target processing unit; the processing units are provided with a plurality of groups, the processing units are sequentially arranged along the conveying direction of the conveying belt, each processing unit comprises a plurality of grabbing devices and welding devices, the welding devices are used for welding workpieces, the grabbing devices are used for grabbing the workpieces blocked by the blocking units at the grabbing points onto the welding devices and grabbing the welded workpieces onto the conveying belt through the welding devices; the grabbing point is positioned on the conveying belt and corresponds to the grabbing device; the plurality of groups of processing units send the working states of the gripping devices and the welding devices to the control unit in real time; the blocking unit is used for executing a blocking action according to the instruction sent by the control unit so as to limit the workpiece to move on the conveyor belt along the conveying direction and comprises a first blocking unit and a second blocking unit, wherein the first blocking unit is used for blocking the workpiece at the deviation detection position, and the second blocking unit is used for blocking the workpiece at the grabbing point; and the alarm unit is connected with the control unit and is used for monitoring the number of the devices with abnormal working states in the processing unit.

As shown in fig. 1, the welding production system provided by the present invention can perform deviation detection on a workpiece to be processed by a deviation detection device before welding, the deviation detection device sends the detected workpiece deviation to the control unit, and the control unit screens the workpiece to be processed according to the workpiece deviation and classifies qualified workpieces after screening according to the workpiece deviation, so that the processing unit can execute different welding procedures according to different types of workpieces. The processing units are provided with a plurality of groups, and the plurality of groups of processing units respectively execute grabbing and welding of the workpieces. The welding device further comprises an alarm device for monitoring abnormal devices in the machining unit in real time, so that the efficiency of a welding assembly line is improved, the welding machining precision is improved, and meanwhile, the stability of welding work is improved. The conveyor belt is preferably a roller conveyor belt, the first blocking unit extends from the deviation detection position along the reverse direction of the conveying direction, and the second blocking unit extends from the grabbing point along the reverse direction of the conveying direction; the induction unit is arranged in the blocking unit along the direction opposite to the conveying direction, so that the workpiece passes through the induction unit before reaching the deviation detection unit and reaches the deviation detection position, the induction unit positioned in front of the first blocking unit induces the workpiece and then sends a workpiece reaching instruction to the control unit, the control unit sends a blocking instruction to the first blocking unit, and the first blocking unit executes a blocking action according to the blocking instruction, so that the workpiece is limited to move on the conveying belt along the conveying direction, and then the workpiece is blocked at the deviation detection position, and meanwhile, the control unit sends a successful blocking instruction after the first blocking unit successfully blocks the workpiece; after the workpiece to be detected is blocked at the deviation detection position, the control unit sends a deviation detection instruction to the deviation detection unit, the deviation detection unit performs deviation detection on the workpiece to be detected, and the detected first deviation value is sent to the control unit after the deviation detection unit finishes detection; the control unit receives a first deviation value sent by the deviation detection unit, and then sends a stopping blocking instruction to the first blocking unit, the blocking unit stops blocking the workpiece after receiving the stopping blocking instruction, meanwhile, the first deviation value is processed into a second deviation value in the control unit, and the control unit stores the obtained second deviation value according to the arrival sequence of the workpiece after obtaining the second deviation value; the plurality of processing units update the processing state to the control unit in real time, and the control unit selects the processing unit with the welding device in the idle state as a target processing unit from the plurality of processing units after obtaining the first deviation value; after the target processing unit corresponding to the workpiece is determined, the workpiece is conveyed to a grabbing point where the target processing unit is located along the conveying belt, and after the sensing device in front of a second blocking unit of the grabbing point senses that the workpiece reaches the target processing unit, the second blocking unit of the target processing unit executes blocking work to block the workpiece to be processed at the grabbing point of the target processing unit; after the workpiece to be machined is blocked at the grabbing point of the target machining unit, the control unit sends a first machining instruction to the target machining unit, and the target machining unit receives the first machining instruction and performs welding machining on the workpiece located at the grabbing point according to the first machining instruction; the plurality of processing units update the processing state to the control unit in real time, and meanwhile, the control unit also updates the device information of the processing units in the abnormal state to the alarm unit in real time. The sensing unit may be a photoelectric sensor. The blocking unit comprises a blocking part, the blocking part can be a baffle capable of lifting or a roller capable of lifting on a flow line, the baffle can be lifted or the roller can be lifted when the blocking action is executed, so that a workpiece is blocked in front of the lifted baffle or the lifted roller, and the direction from the front to the back is the conveying direction of the conveying belt. The deviation detection can be the eccentric size caused by pressing before welding or the machining tolerance size of the workpiece. The first deviation value is converted into a second deviation value, the first pressing deviation is classified, the class corresponding to the classified workpiece is the second deviation value, and the classified class number is set by considering various factors such as production requirements, memory capacity of a control unit and the like, so that the workpiece can be modified before processing according to different production conditions. And classifying the first deviation values according to corresponding preset categories to obtain second deviation values, wherein each second deviation value corresponds to different welding programs, the welding programs and the grabbing programs jointly form a first machining instruction, the welding programs control the welding device to weld the workpiece, and the grabbing programs control the grabbing device to grab the workpiece from the grabbing point to the welding device. When the second deviation value is stored, the stored sequence is in one-to-one correspondence with the sequence of the processed workpieces, so as to ensure that the welded workpieces grabbed by the processing unit are matched with the first processing instruction received by the processing unit when a plurality of workpieces exist on the conveyor belt. The working state may include a to-be-machined state, a machining state, an idle state, and an abnormal state. The updated information of the alarm unit comprises position information, number information and the like which can reflect the positions of all abnormal devices, the devices comprise a gripping device and a welding device, and the alarm unit is arranged to ensure that an operator can repair the devices with abnormal states to ensure the production efficiency of the welding production line.

Fig. 2 is a schematic operation diagram of an alarm device in a welding production system according to an embodiment of the present invention.

As shown in fig. 2, in this embodiment, the monitoring, by the alarm unit, the number of the devices with abnormal operating states in the processing unit further includes: and setting a first early warning value, starting primary warning by the warning unit when the number of the devices with abnormal working states in the plurality of processing units reaches the first early warning value, and correspondingly increasing the warning level of the warning unit by one step when the number of the devices with abnormal working states is increased by one step on the basis of the first early warning value. Thereby ensuring the working efficiency of the welding production system. Setting a second early warning value, and starting a second detection state by the deviation detection device when the quantity of equipment with abnormal working states in the plurality of processing units reaches the second early warning value; wherein the second warning value is greater than the first warning value. Thereby further guaranteeing the working efficiency of the welding production system. The purpose of setting the first early warning value is to control the number of devices in an abnormal state to be free from influencing the welding processing efficiency of the whole assembly line so as to ensure that production can complete a rated production target total value within a certain time.

In the embodiment, the blocking unit comprises a blocking part and a power part, the blocking part is a liftable blocking plate and is used for blocking the workpiece, and the power part is used for driving a roller above the power part to roll so as to enable the workpiece to be capable of being transmitted on the conveying belt along the conveying direction; and in addition, a power part, namely a power part in the next group of blocking units is arranged below and in front of the conveyor belt where the blocking plate of each group of blocking units except the blocking unit positioned at the tail part of the assembly line is positioned, so that after the blocking unit stops blocking the workpiece, the power part positioned below and in front of the blocking plate can drive the workpiece to continue to transmit along the transmission direction. The stopping unit executes stopping action according to the control instruction, specifically, the control unit sends a stopping instruction to the stopping unit, the power part stops driving the roller to rotate after receiving the stopping instruction, and after the power part stops driving the roller to rotate, the stopping part rises until the height of the stopping part is higher than that of the roller so as to ensure that the stopping part can stop the workpiece. At this time, if the power part executing the blocking action is not the blocking unit positioned at the forefront of the production line, the workpiece blocked by the previous group of blocking parts can be placed on the power part executing the blocking action, so that the power part executing the blocking action stops driving the roller to rotate, on one hand, kinetic energy can be stopped being provided for the workpiece blocked by the blocking unit, and the moving speed of the workpiece in the conveying direction is reduced, so that the abrasion caused by the collision between the workpiece and the blocking parts is reduced; on the other hand, the damage of the blocked workpiece above the roller driven by the power part due to friction can be avoided. The baffle can limit transmission along the transmission direction and can ensure that the central line of the workpiece and the central line of the conveyor belt are in the same straight line so as to ensure the accuracy of grabbing and measuring. The distance between the blocking part in one group of blocking units and the roller driven by the power part in the next group of blocking units does not exceed the width of one workpiece in the transmission direction, so that the roller driven by the power part in the next group of blocking units can contact the blocked workpiece after the blocking of the workpiece by one group of blocking units is stopped. The power part in the next group of the blocking units positioned in front below the blocking part stops driving the roller to rotate when the previous group of the blocking units perform blocking actions, so that friction generated on the workpiece due to continuous rotation of the roller caused by the static workpiece is avoided.

As shown in fig. 3, in the present embodiment, the plurality of processing units are specifically three groups of processing units, which are respectively a first processing unit, a second processing unit and a third processing unit, and the selecting of the welding device in the idle state from the processing units as the target welding device is specifically: judging whether the welding device is in an idle state in the third processing unit, if the welding device is in the idle state, selecting the third processing unit as a target processing unit, selecting the welding device which is in the idle state in the target processing unit firstly as a first welding device for welding a workpiece, and after the workpiece is conveyed to the third processing unit along a conveying belt, processing the workpiece by the first welding device according to the first processing instruction; if no welding device in the third processing unit is in an idle state, judging whether a welding device in the second processing unit is in an idle state or not; if the welding device in the second processing unit is in an idle state, selecting the second processing unit as a target processing unit, and selecting the welding device in the idle state in the target processing unit as a first welding device for welding a workpiece, wherein after the workpiece is conveyed to the second processing unit along a conveying belt, the first welding device processes the workpiece according to the first processing instruction; if no welding device in the second processing unit is in an idle state, judging whether the first processing unit has the welding device in the idle state; if the welding device in the first processing unit is in an idle state, selecting the first processing unit as a target processing unit, and selecting the welding device in the idle state in the target processing unit as a first welding device for welding a workpiece, wherein after the workpiece is conveyed to the first processing unit along a conveying belt, the first welding device processes the workpiece according to the first processing instruction; if no welding device in the first processing unit is in an idle state, the workpiece waits for the deviation detection unit, and meanwhile, the control unit continues to judge whether a welding device in an idle state exists on the processing unit from the third processing unit until the workpiece is conveyed to the target processing unit in an idle state. When the processing units are provided with three groups, the first processing unit and the third processing unit are respectively positioned at two ends of the three groups of processing units, and the second processing unit is positioned between the first processing unit and the third processing unit, so that the control unit ensures that the welding device in the processing unit positioned at the end part is always selected when the welding device is selected, and simultaneously ensures that the welding device in the processing unit which is firstly in an idle state is selected, so that the processing orderliness is ensured, and the working efficiency of the welding processing assembly line is improved.

In this embodiment, the first processing unit, the second processing unit and the third processing unit are sequentially disposed at one side of the assembly line, and the third processing unit is located at the end of the assembly line farther from the deviation detecting unit. When selecting the welding device, it is preferable to select the third processing unit that is farther from the deviation detecting unit, so as to shorten the waiting time of the workpiece to be processed located ahead due to the gripping of the workpiece on the conveyor belt by the gripping device. When the number of the processing units is more than three groups, whether the welding devices in the processing units are idle or not is sequentially judged from the processing unit at the end far away from the deviation detection device along the reverse direction of the conveying belt.

In this embodiment, the blocking unit further includes a third blocking unit located before the deviation detecting unit and the processing unit; and the sensing unit is arranged in front of the third blocking unit and used for sensing the position of the workpiece. The third blocking unit is disposed between the deviation detecting unit and the processing unit, between the processing unit and the processing unit, and before the detecting unit. When the deviation detection unit detects deviation of a workpiece reaching the first blocking unit or when the processing unit grasps a workpiece reaching the second blocking unit corresponding to the processing unit, the third blocking unit located in front of the first blocking unit and the second blocking unit blocks the workpiece located on the third blocking unit. The power part in the blocking unit provides power for the workpiece to enable the workpiece to reach the blocking part, so that the third blocking unit blocks the workpiece to be blocked, and on one hand, the workpiece in front can be prevented from entering the deviation measuring unit which is or is ready to be detected and the processing unit which is or is ready to be grabbed, and collision between the workpiece and the device and between the workpiece and the workpiece is avoided; on the other hand, the third blocking unit is arranged, so that the workpiece to be processed is close to the rear part of the conveying belt as far as possible on the basis of ensuring the processing safety through the matching of the power part and the blocking part, and the time for the workpiece blocked by the third blocking unit to reach the target position is shortened after the workpiece on the deviation detection unit or the processing unit is detected or processed. The control unit can judge the positions of the workpieces on the conveyor belt corresponding to the second deviation values stored in the control unit in sequence according to the workpiece position information, so that the control unit can still match the second deviation values of the workpieces to be processed with the second deviation values of the workpieces to be processed and update the position areas of the workpieces to be processed in real time when the workpieces to be processed are blocked by the third blocking device on the way of transporting the workpieces to be processed to the designated positions because the workpieces are processed at the rear part.

In this embodiment, the conveyor belt is divided into a first conveyor belt and a second conveyor belt, the first conveyor belt is used for conveying workpieces which are not welded, and the second conveyor belt is used for conveying workpieces which are welded; when the processing unit grabs the workpiece to be processed transmitted to the processing unit to the welding device, the control unit deletes the stored second deviation value in the workpiece to be processed to ensure that the information of the second deviation value stored in the control unit in the detection sequence corresponds to the workpiece on the conveyor belt which is detected by the deviation detection unit from back to front one by one. The front direction and the back direction are along the conveying direction of the conveying belt, when a workpiece is grabbed to the welding device, the welding device sends a grabbing finishing instruction to the control unit, and meanwhile, the control unit deletes the stored second deviation information corresponding to the workpiece, so that on one hand, the workpiece on the conveying belt and the information of the second deviation values stored in the control unit in sequence are in one-to-one correspondence from back to front according to the workpiece, and on the other hand, the memory of the control unit can be saved.

In this embodiment, the gripping device is provided with a gripping part and a rotating part, the gripping part includes a first gripper and a second gripper, and the gripping device can grip two workpieces by rotating the gripping part; after the first workpiece on the second welding device is machined, the control unit sends the next second workpiece matched with the second welding device to a grabbing point of a machining unit where the second welding device is located along the conveying belt, then the first grabbing hand grabs the second workpiece reaching the grabbing point, after the first grabbing hand grabs the second workpiece, the grabbing part is moved to the corresponding position of the second welding device through rotating the grabbing part and the rotating part, the first workpiece is grabbed by the second grabbing hand through rotating the grabbing part, the second welding device is grabbed by the second grabbing hand, the second workpiece on the first grabbing hand is placed on the second welding device through rotating the grabbing part again, and then the workpiece of the first workpiece of the second grabbing hand is placed on the second conveying belt. Firstly, when the working state of the second welding device is an idle state, the control unit selects the second welding device as a target welding device of the first workpiece, and the working state of the second welding device is changed into a state to be processed; then the first workpiece is conveyed to a grabbing point, the first grabbing hand grabs the first workpiece to a second welding device for welding, and when the first workpiece is grabbed to the second welding device, the working state of the second welding device is changed into a machining state; when the second welding device finishes processing the first workpiece, the working state of the second welding device is changed into an idle state until the control unit selects the second welding device as a target welding device of the second workpiece, and the working state of the second welding device is changed into a state to be processed; the second welding device is conveyed to a grabbing point, the first grabbing hand grabs the second workpiece to a position corresponding to the second welding device, and in the process of moving to the position corresponding to the second welding device, the grabbing hand is prevented from colliding with workpieces or equipment on other production lines, so that the grabbing part is required to be rotated to avoid collision besides the rotating part; the second workpiece is firstly grabbed to the position corresponding to the second welding device instead of being directly placed on the second welding device because the welded first workpiece is not taken down from the second welding device, so that the machined first workpiece needs to be firstly taken down from the second welding device by using the second gripper, the unprocessed second workpiece on the first gripper is placed on the second welding device by rotating the grabbing part after the first workpiece is taken down, the working state of the second welding device is changed into the machining state after the first gripper places the second workpiece on the second welding device, and meanwhile, the grabbing device places the machined first workpiece on the machined conveyor belt by rotating the grabbing part and the rotating part again. The workpiece is grabbed by arranging the two grabbers on the grabbing part, so that the time for grabbing the workpiece to the welding device and the conveying belt is reduced, and the processing efficiency of the processing unit is improved.

In this embodiment, in the process of transferring the workpiece to the processing unit, if the welding device that processes the workpiece is selected to become the abnormal state, the workpiece waits on the third blocking unit located before the processing unit where the welding device that processes the workpiece is located until other welding devices in the processing unit where the welding device that is in the abnormal state is located become the idle state. When the workpiece to be processed is transported to the processing unit selected by the control unit, the welding device selected by the control unit is changed into an abnormal state, the workpiece to be processed waits in a third blocking unit positioned in front of the processing unit, more specifically, when the workpiece to be processed is transported to the sensing unit in front of the third blocking unit, the control unit sends a blocking instruction to the third blocking unit and orders a power part in a second blocking unit below the processing unit to stop driving a roller to rotate, the third blocking unit executes a blocking action after receiving the blocking instruction, the workpiece to be processed is blocked to the front of the blocking part, when the state of the welding device in the processing unit is changed into an idle state, the control unit preferentially matches the workpiece to be processed with the welding device in the idle state, and the workpiece to be processed is continuously transported and processed along the conveyor belt, to ensure the orderliness of the welding process.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A welding production system for a welding process line, comprising: the device comprises a control unit and an execution unit, wherein the execution unit comprises a sensing unit, a deviation detection unit, a processing unit, a blocking unit and an alarm unit;

the sensing unit is arranged on the production line and used for sensing the position of a workpiece;

the deviation detection unit is used for performing deviation detection on the workpiece blocked at the deviation detection position by the blocking unit and sending a detected first deviation value to the control unit; the deviation detection position is a position on the conveying belt corresponding to the deviation detection unit;

the control unit is used for receiving a first deviation value of the workpiece sent by the deviation detection unit, processing the first deviation value into a second deviation value, storing the second deviation value according to the workpiece measurement sequence, and sending a first machining instruction to the machining unit for machining the corresponding workpiece according to the processed second deviation value; the processing unit is also used for selecting the processing unit in an idle state from a plurality of processing units as a target processing unit;

the processing units are sequentially arranged along the conveying direction of the conveying belt and comprise a plurality of grabbing devices and welding devices, the welding devices are used for welding workpieces, the grabbing devices are used for grabbing the workpieces blocked by the blocking units at the grabbing points onto the welding devices and grabbing the welded workpieces onto the conveying belt by the welding devices; the grabbing point is positioned on the conveying belt and corresponds to the grabbing device; the plurality of groups of processing units send the working states of the gripping devices and the welding devices to the control unit in real time;

the blocking unit is used for executing a blocking action according to the instruction sent by the control unit so as to limit the workpiece to move on the conveying belt along the conveying direction, and comprises a first blocking unit, a second blocking unit and a third blocking unit, wherein the first blocking unit is used for blocking the workpiece at the deviation detection position, the second blocking unit is used for blocking the workpiece at the grabbing point, and the third blocking unit is positioned in front of the first blocking unit and the second blocking unit; an induction unit is arranged in front of the third blocking unit and used for inducing the position of a workpiece; the first blocking unit comprises a power part and a blocking part, the power part can receive a blocking instruction to stop driving the roller to rotate, and when the power part stops driving the roller to rotate, the blocking part rises until the height of the blocking part is higher than that of the roller, so that the blocking part can block a workpiece; the second blocking unit and the third blocking unit have the same structure;

and the alarm unit is connected with the control unit and is used for monitoring the number of the devices with abnormal working states in the processing unit.

2. The welding production system of claim 1, wherein the alarm unit monitoring the number of devices with abnormal operating conditions in the processing unit further comprises:

and setting a first early warning value, starting primary alarm by the alarm unit when the number of the devices with abnormal working states in the processing units reaches the first early warning value, and correspondingly increasing the alarm level of the alarm unit by one step when the number of the devices with abnormal working states is increased by one step on the basis of the first early warning value.

3. The welding production system of claim 2, wherein the monitoring of the number of devices with abnormal operating conditions in the processing unit by the alarm unit further comprises:

setting a second early warning value, and starting a second detection state by the deviation detection unit when the number of devices with abnormal working states in the plurality of processing units reaches the second early warning value; wherein the second warning value is greater than the first warning value.

4. The welding production system of claim 1, wherein the blocking unit comprises a blocking portion and a power portion, the blocking portion is a liftable blocking plate and is used for blocking the workpiece, and the power portion is used for driving a roller above the power portion to roll so that the workpiece can be driven on the conveyor belt in the conveying direction;

and a power part is arranged in front of the conveyor belt where the blocking plate of each group of blocking units except the blocking unit at the tail part of the assembly line is located, so that after the blocking unit stops blocking the workpiece, the power part in front of the blocking plate can drive the workpiece to continue to transmit along the transmission direction.

5. The welding production system according to claim 1, wherein the plurality of processing units are specifically three groups of processing units, namely a first processing unit, a second processing unit and a third processing unit, and the selection of the welding device in an idle state from the processing units as the target welding device is specifically:

judging whether the welding device is in an idle state in the third processing unit, if the welding device is in the idle state, selecting the third processing unit as a target processing unit, selecting the welding device which is in the idle state in the target processing unit firstly as a first welding device for welding a workpiece, and after the workpiece is conveyed to the third processing unit along a conveying belt, processing the workpiece by the first welding device according to the first processing instruction; if no welding device in the third processing unit is in an idle state, judging whether a welding device in the second processing unit is in an idle state or not;

if the welding device in the second processing unit is in an idle state, selecting the second processing unit as a target processing unit, and selecting the welding device in the idle state in the target processing unit as a first welding device for welding a workpiece, wherein after the workpiece is conveyed to the second processing unit along a conveying belt, the first welding device processes the workpiece according to the first processing instruction; if no welding device in the second processing unit is in an idle state, judging whether the first processing unit has the welding device in the idle state;

if the welding device in the first processing unit is in an idle state, selecting the first processing unit as a target processing unit, and selecting the welding device in the idle state in the target processing unit as a first welding device for welding a workpiece, wherein after the workpiece is conveyed to the first processing unit along a conveying belt, the first welding device processes the workpiece according to the first processing instruction; if no welding device in the first processing unit is in an idle state, the workpiece waits for the deviation detection unit, and meanwhile, the control unit continues to judge whether a welding device in an idle state exists on the processing unit from the third processing unit until the workpiece is conveyed to the target processing unit in an idle state.

6. The welding production system according to claim 5, wherein the first processing unit, the second processing unit, and the third processing unit are sequentially disposed on one side of the production line, and the third processing unit is located at an end of the production line farther from the deviation detecting unit.

7. The welding production system of claim 1, wherein the conveyor belts are divided into a first conveyor belt for transporting unwelded workpieces and a second conveyor belt for transporting welded workpieces; when the processing unit grabs the workpiece to be processed transmitted to the processing unit to the welding device, the control unit deletes the stored second deviation value in the workpiece to be processed to ensure that the information of the second deviation value stored in the control unit in the detection sequence corresponds to the workpiece on the conveyor belt which is detected by the deviation detection unit from back to front one by one.

8. The welding production system according to claim 7, wherein the gripping device is provided with a gripping portion and a rotating portion, the gripping portion includes a first gripper and a second gripper, and the gripping device can grip two workpieces by rotating the gripping portion; after a first workpiece on a second welding device is processed, the control unit sends a next second workpiece matched with the second welding device to a grabbing point of the processing unit where the second welding device is located along the conveyor belt, then the first grabbing hand grabs the second workpiece reaching the grabbing point, and after the first grabbing hand grabs the second workpiece, moving the grasping portion to a corresponding position of the second welding device by rotating the grasping portion and the rotating portion, and the first workpiece is grabbed and taken off the second welding device through the second grabbing hand by rotating the grabbing part, the second workpiece positioned on the first grabbing hand is placed on the second welding device through rotating the grabbing part again, and then the workpiece of the first workpiece is placed on the second conveying belt through the second grabbing hand.

9. The welding production system according to claim 7, wherein, in the course of the workpiece being transported to the processing unit, the welding device that has selected to process the workpiece becomes an abnormal state, the workpiece waits on the third barrier unit located before the processing unit where the welding device that processes the workpiece is located until other welding devices in the processing unit where the welding device that is in the abnormal state is located become an idle state.