CN109530993B - Welding production system - Google Patents
Welding production system Download PDFInfo
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- CN109530993B CN109530993B CN201811649002.8A CN201811649002A CN109530993B CN 109530993 B CN109530993 B CN 109530993B CN 201811649002 A CN201811649002 A CN 201811649002A CN 109530993 B CN109530993 B CN 109530993B
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
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Abstract
The present invention provides a welding production system, comprising: the device comprises a sensing unit, a deviation detection unit, a control unit, a processing unit and a blocking unit, wherein the sensing unit, the deviation detection unit, the control unit, the processing unit and the blocking unit are arranged in the processing unit; the sensing unit is arranged on the assembly line and used for sensing the position of the 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 a first deviation value of the workpiece sent by the deviation detection unit, processing the first deviation value into a second deviation value or a third deviation value, storing the second deviation value and the third deviation value in sequence, and sending a first machining instruction to the machining unit corresponding to the workpiece according to the second deviation value; the control unit is also used for selecting a target welding device; the processing unit comprises a gripping device and a welding device; and the blocking unit executes a blocking action according to the instruction sent by the control unit. The invention improves the welding precision of the welding production line.
Description
Technical Field
The invention relates to the field of welding production, in particular to a welding production system for a welding processing line.
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 assembly line and comprises: the device comprises a sensing unit, a deviation detection unit, a control unit, a processing unit and a blocking unit, wherein the sensing unit, the deviation detection unit, the control unit, the processing unit and the blocking unit are arranged in the processing 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 a first deviation value of the workpiece sent by the deviation detection unit, processing the first deviation value, judging the first deviation value according to a set threshold value, processing the first deviation value of the workpiece with the first deviation value within the set threshold value into a second deviation value, processing the first deviation value of the workpiece with the first deviation value not within the set threshold value into a third deviation value, and storing the second deviation value and the third deviation value according to the sequence that the workpiece reaches the deviation detection unit; the control unit is also used for selecting the welding device in an idle state from the processing unit as a target welding device for processing the workpiece corresponding to the second deviation value; the processing unit comprises a plurality of grabbing devices and welding devices, the welding devices are used for respectively welding workpieces, and the grabbing devices are used for grabbing the workpieces which are blocked by the blocking units at the grabbing points to 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 processing unit sends the working states of the grabbing device and the welding device to the control unit in real time; and 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.
The welding production system provided by the invention can be used for detecting the deviation of the workpiece to be processed through the deviation detection device before welding, the deviation detection device sends the detected deviation of the workpiece to the control unit, and the control unit screens the workpiece to be processed according to the deviation of the workpiece, so that the processing unit can weld the qualified workpiece, the welding precision is improved, and the reliability of the workpiece 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 sends a blocking stopping instruction to the first blocking unit after receiving the first deviation value sent by the deviation detection unit, and the blocking unit stops blocking the workpiece after receiving the blocking stopping instruction. Meanwhile, the interior of the control unit judges whether the first deviation value exceeds a set threshold value, when the first deviation value does not exceed the set threshold value, the control unit processes the first deviation value into a second deviation value, and after the control unit obtains the second deviation value, the obtained second deviation value is stored according to the arrival sequence of the workpieces; 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; when the first deviation value exceeds a set threshold value, the workpiece is judged to be an unqualified workpiece, the workpiece is not grabbed and directly passes through the processing unit, and the deviation detection can be the dimension value which can be obtained through measurement, such as the eccentric dimension caused by pressing before welding, the allowable error dimension of processing of the workpiece, and the like. Different threshold values can be set in the control unit according to different processing requirements, and the first deviation value which is greater than the threshold value or less than the threshold value is processed into a third deviation value, namely, the workpiece is judged to be a unqualified workpiece. The welding program and the grabbing program jointly form a machining instruction, wherein the welding program controls the welding device to weld the workpiece, and the grabbing program controls the grabbing device to grab the workpiece from a grabbing point to the welding device. When the second deviation value and the third deviation value are stored, the second deviation value and the third deviation value are stored together according to the sequence and are in one-to-one correspondence with the workpieces on the conveying belt, so that the processing unit can not mistakenly grab the unqualified workpieces with the third deviation value when the conveying belt is provided with a plurality of workpieces. The operating state of the welding device may include a to-be-machined state, a machining state, an idle state, and an abnormal state. The conveyor belt can be divided into a processed conveyor belt and an unprocessed conveyor belt, and after the workpieces are welded, the gripping device places the processed workpieces on the processed conveyor belt. Unqualified workpieces are selected by the deviation detection unit, and only qualified workpieces are welded, so that the welding precision of the welding production line is improved.
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 a control unit of a welding production system classifying workpieces having a first deviation value within a threshold range according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating operation of a first barrier unit 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.
As shown in fig. 1, the present invention provides a welding production system for a welding process line, comprising: the device comprises a sensing unit, a deviation detection unit, a control unit, a processing unit and a blocking unit, wherein the sensing unit, the deviation detection unit, the control unit, the processing unit and the blocking unit are arranged in the processing 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 a first deviation value of the workpiece sent by the deviation detection unit, processing the first deviation value, judging the first deviation value according to a set threshold value, processing the first deviation value of the workpiece with the first deviation value within the set threshold value into a second deviation value, processing the first deviation value of the workpiece with the first deviation value not within the set threshold value into a third deviation value, and storing the second deviation value and the third deviation value according to the sequence that the workpiece reaches the deviation detection unit; the control unit is also used for selecting the welding device in an idle state from the processing unit as a target welding device for processing the workpiece corresponding to the second deviation value; the processing unit comprises a plurality of grabbing devices and welding devices, the welding devices are used for respectively welding workpieces, and the grabbing devices are used for grabbing the workpieces which are blocked by the blocking units at the grabbing points to 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 processing unit sends the working states of the grabbing device and the welding device to the control unit in real time; and 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.
The welding production system provided by the invention can be used for detecting the deviation of the workpiece to be processed through the deviation detection device before welding, the deviation detection device sends the detected deviation of the workpiece to the control unit, and the control unit screens the workpiece to be processed according to the deviation of the workpiece, so that the processing unit can weld the qualified workpiece, the welding precision is improved, and the reliability of the workpiece 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 sends a blocking stopping instruction to the first blocking unit after receiving the first deviation value sent by the deviation detection unit, and the blocking unit stops blocking the workpiece after receiving the blocking stopping instruction. Meanwhile, the interior of the control unit judges whether the first deviation value exceeds a set threshold value, when the first deviation value does not exceed the set threshold value, the control unit processes the first deviation value into a second deviation value, and after the control unit obtains the second deviation value, the obtained second deviation value is stored according to the arrival sequence of the workpieces; 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; when the first deviation value exceeds a set threshold value, the workpiece is judged to be an unqualified workpiece, the workpiece is not grabbed and directly passes through the processing unit, and the deviation detection can be the dimension value which can be obtained through measurement, such as the eccentric dimension caused by pressing before welding, the allowable error dimension of processing of the workpiece, and the like. Different threshold values can be set in the control unit according to different processing requirements, and the first deviation value which is greater than the threshold value or less than the threshold value is processed into a third deviation value, namely, the workpiece is judged to be a unqualified workpiece. The welding program and the grabbing program jointly form a machining instruction, wherein the welding program controls the welding device to weld the workpiece, and the grabbing program controls the grabbing device to grab the workpiece from a grabbing point to the welding device. When the second deviation value and the third deviation value are stored, the second deviation value and the third deviation value are stored together according to the sequence and are in one-to-one correspondence with the workpieces on the conveying belt, so that the processing unit can not mistakenly grab the unqualified workpieces with the third deviation value when the conveying belt is provided with a plurality of workpieces. The operating state of the welding device may include a to-be-machined state, a machining state, an idle state, and an abnormal state. The conveyor belt can be divided into a processed conveyor belt and an unprocessed conveyor belt, and after the workpieces are welded, the gripping device places the processed workpieces on the processed conveyor belt. Unqualified workpieces are selected by the deviation detection unit, and only qualified workpieces are welded, so that the welding precision of the welding production line is improved.
Fig. 2 is a schematic diagram illustrating a control unit of a welding production system classifying and processing workpieces having a first deviation value within a threshold range according to an embodiment of the present invention.
As shown in fig. 2, in this embodiment, the step of converting the first deviation value into the second deviation value specifically includes:
classifying the numerical values in the set threshold range according to the set threshold range;
when the first deviation value of the workpiece is within a set threshold value, the control unit classifies the first deviation value according to the category of numerical division;
the control unit outputs a second deviation value of the workpiece, and matches the workpiece with the first welding device and a first machining instruction executed by the first welding device according to the second deviation value.
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. So as to further improve the welding precision of the welding production device.
In this embodiment, when selecting the target welding device, the control unit preferentially selects the welding device that is first in the idle state as the target welding device. When a plurality of welding devices are in an idle state on the processing unit at the same time, the welding device in the idle state is preferentially selected as a target welding device by control, so that the use efficiency of each welding device is approximate, and damage caused by excessive use of individual welding devices is avoided.
In this embodiment, the blocking unit further includes a third blocking unit located in front of the first blocking unit and the second blocking unit; and a sensing unit is arranged in front of the third blocking unit and used for sensing the position of the workpiece. When the deviation detection unit detects deviation of a workpiece reaching the first blocking unit or when the processing unit grabs a second blocking unit corresponding to the processing unit, the third blocking unit positioned in front of the first blocking unit and the second blocking unit blocks the workpiece positioned 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 power part, namely the 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 at the tail part of the assembly line is located, so that after the blocking unit stops blocking the workpiece, the power part located 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. The sensing device is arranged in front of the blocking device, on one hand, the sensing device can reflect that the workpieces reach the blocking unit to the main control unit, so that the main control unit determines whether to send a blocking instruction to the blocking unit, on the other hand, the quantity of the workpieces reaching the position can be reflected through the workpiece reaching information of the sensing device, and the quantity corresponds to the sequence stored by the control unit, so that the control unit can identify the position where the workpieces reach in the assembly line, and further, the processing unit is prevented from grabbing wrong workpieces with third deviation values.
In this embodiment, the sensing unit extends a first set distance from the deviation detecting portion to the opposite direction of the conveying direction of the conveyor belt, and the sensing unit extends a second set distance from the grabbing point to the opposite direction of the conveying direction of the conveyor belt. The sensing unit extends a first set distance from the deviation detection position to the reverse direction of the conveying belt, when the deviation detection unit is in an idle state, a workpiece enters the sensing unit in front of the deviation detection unit and is not impacted by other front workpieces which are not subjected to deviation detection, the sensing unit is arranged at the first set distance in front of the deviation detection position, and when the workpiece is required to be subjected to deviation detection in the sensing unit in front of the deviation detection position, the third blocking unit in front of the deviation detection position blocks the front workpiece which is not subjected to deviation detection in the sensing unit, so that the impact is avoided. The direction from front to back in this embodiment refers to the direction along the conveyor belt. The blocking part of the third blocking unit which is positioned in front of the deviation detection position and closest to the deviation detection position is positioned behind the end part, far away from the deviation detection position, of the sensing unit where the deviation detection position is positioned, and the power part of the first blocking unit is positioned between the end part of the sensing unit in front of the deviation detection position and the blocking part of the third blocking unit, so that the third blocking unit can timely block other workpieces in front when one workpiece to be detected exists in the deviation detection unit. The power part and the blocking part of the second blocking unit and the sensing unit in front of the grabbing point are arranged on the same principle as the first blocking unit, so that when the grabbing device grabs the workpiece on the grabbing point, the workpiece in front cannot collide with the workpiece on the grabbing point.
In this embodiment, a plurality of sets of third dam units are provided between the first dam unit and the second dam unit in the conveying direction of the conveyor belt. In this embodiment, a plurality of sets of third dam units are provided between the first dam unit and the second dam unit in the conveying direction of the conveyor belt. In the production process, the speed of measurement by the deviation detecting unit is generally faster than the speed of grasping the workpiece on the conveyor belt by the processing unit, and therefore, in order to improve the processing efficiency, a plurality of workpieces can be placed between the processing unit and the deviation detecting unit. Therefore, in order to avoid collision between the plurality of workpieces positioned between the processing unit and the deviation detecting unit, a plurality of sets of third dam units may be provided between the first dam unit and the second dam unit in the conveying direction of the conveyor belt. The number of the third blocking units is mainly influenced by the distance between the workpieces, the measuring speed of the deviation detection unit and the processing speed of the processing unit, so that the number of the third blocking units and the distance between the power part and the blocking part in the third blocking units can be modified according to the measuring speed of the measuring device and the requirements of different production lines, and the working efficiency of the welding production system is improved.
Fig. 3 is a schematic diagram illustrating operation of a first barrier unit in a welding production system according to an embodiment of the present invention.
As shown in fig. 3, in the present embodiment, the blocking unit includes a power portion and a blocking portion, and the blocking portion of the first blocking unit is composed of a plurality of blocking members; the first blocking unit is used for blocking the workpiece at a deviation detection position, and specifically comprises:
the power part of the first blocking unit stops driving the conveyor belt to rotate;
the blocking part of the first blocking unit vertically moves upwards along a perpendicular line of a contact surface of the workpiece and the transmission belt, and blocks the workpiece reaching the deviation detection position from moving along the transmission direction of the transmission belt;
the blocking part of the first blocking unit vertically moves upwards along the perpendicular line of the contact surface of the workpiece and the transmission belt, and lifts the workpiece at the deviation detection position;
the blocking portion of the first blocking unit holds the lifted workpiece between the plurality of blocking members such that the center of the lifted workpiece is located at least on the center line of the conveyor belt.
The workpiece in this embodiment is generally a symmetrical workpiece, and the axis of symmetry of the workpiece during machining is located as far as possible on the center line of the conveyor belt. The blocking parts in the first group of blocking units can lift and tighten the workpiece, and when the blocking parts consist of two blocking parts, the two blocking parts move along the direction vertical to the central line of the conveyor belt, so that the central line of the workpiece can be positioned on the central line of the conveyor belt, namely the central line of a deviation detection position, and the precision of the deviation detection unit for detecting the deviation of the workpiece is improved; when the circular workpiece is in a round shape, the blocking part is composed of more than two blocking parts, the plurality of blocking parts lift the workpiece and then move along the central point of the deviation detection position, so that the center of the workpiece is positioned at the central point of the deviation detection position, and the detection precision of the deviation detection unit is further improved. The blocking pieces can be two vertically arranged blocking plates, so that the blocking plates can lift the workpiece upwards and can be positioned in a plane parallel to the contact surface of the workpiece and the conveyor belt.
In this embodiment, the blocking portion in the second blocking unit includes two blocking members; the second blocking unit is used for blocking the workpiece at the grabbing point, and specifically comprises:
the power part of the second blocking unit stops driving the conveyor belt to rotate;
the blocking part of the second blocking unit moves along the contact surface of the workpiece and the transmission belt and is perpendicular to the transmission direction of the transmission belt, so that the workpiece can be blocked to the grabbing point.
At least one of the two blocking pieces of the second blocking unit can limit the workpiece to move along the conveying direction, and the two blocking pieces are matched with each other to limit the position, perpendicular to the conveying direction of the conveying belt, of the workpiece along the contact surface of the workpiece and the conveying belt, so that the workpiece can reach the grabbing point. Therefore, one blocking piece is required to simultaneously block the workpiece and also can be matched with the other blocking piece to limit the workpiece, and the workpiece can be a right-angle workpiece consisting of two blocking plates; when the workpiece is not a circular workpiece, such a workpiece may also be a U-shaped baffle, and the opening of the U-shaped baffle faces the workpiece to be blocked when the workpiece is mounted.
In this embodiment, the control unit is further configured to send the workpiece with the third deviation value to the first position. The control unit transports unqualified workpieces to a first position, the first position can be arranged at the tail end of the unprocessed conveying belt, and the workpieces are conveyed to the first position on the unprocessed conveying belt after passing through the processing unit, so that an operator can timely re-inspect the unqualified workpieces or process the unqualified workpieces again to improve the production efficiency and the processing precision.
In this embodiment, in the process of transferring the third workpiece to the processing unit, the target welding device becomes an abnormal state, and the third workpiece waits on the third blocking unit before the processing unit until there are other welding devices in the processing unit to become an idle state. When a workpiece to be machined is conveyed to the machining unit, the target welding device is in an abnormal state, when the workpiece to be machined is conveyed to the sensing unit in front of the third blocking unit in front of the machining unit, the control unit sends a blocking instruction to the third blocking unit and commands the power part in the second blocking unit below the machining unit to stop driving the roller to rotate, the third blocking unit receives the blocking instruction and then executes a blocking action, the workpiece to be machined is blocked to the front of the blocking part, when the state of the welding device in the machining unit is changed into an idle state, the control unit preferentially matches the workpiece to be machined with the welding device in the idle state, and the workpiece to be machined continues to be conveyed and machined along the conveying belt so as to ensure the orderliness of welding machining.
In summary, the welding production system provided by the invention can perform deviation detection on the workpiece to be processed through the deviation detection device before welding, the deviation detection device sends the detected first deviation value of the workpiece to the control unit, and the control unit screens the workpiece to be processed according to the first deviation value of the workpiece, so that the processing unit can process the screened qualified workpiece, and the welding precision is improved.
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 (9)
1. A welding production system for a welding process line, comprising: the device comprises a sensing unit, a deviation detection unit, a control unit, a processing unit and a blocking unit, wherein the sensing unit, the deviation detection unit, the control unit, the processing unit and the blocking unit are arranged in the processing 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, judging the first deviation value according to a set threshold value, processing the first deviation value of the workpiece with the first deviation value within the set threshold value into a second deviation value, processing the first deviation value of the workpiece with the first deviation value not within the set threshold value into a third deviation value, storing the second deviation value and the third deviation value according to the sequence of the workpiece reaching the deviation detection unit, and sending a first machining instruction to the machining unit for machining the corresponding workpiece according to the processed second deviation value; the control unit is further used for selecting a welding device in an idle state from the processing unit as a target welding device for processing a workpiece corresponding to the second deviation value;
the processing unit comprises a plurality of grabbing devices and welding devices, the welding devices respectively perform welding processing on workpieces, and the grabbing devices are used for grabbing the workpieces blocked by the blocking units on grabbing points to the welding devices and grabbing the welded workpieces onto a conveying belt by the welding devices; the grabbing point is positioned on the conveying belt and corresponds to the grabbing device; the processing unit sends the working states of the gripping device and the welding device 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.
2. Welding production system according to claim 1, wherein the first deviation value is processed to the second deviation value;
classifying the numerical values within the range of the set threshold value according to the set threshold value;
when the first deviation value of the workpiece is within the set threshold, the control unit classifies the first deviation value according to numerically-divided categories;
and the control unit outputs the second deviation value of the workpiece and matches the workpiece with a first welding device and the first machining instruction executed by the first welding device according to the second deviation value.
3. The welding production system according to claim 1, wherein the control unit preferentially selects the welding device that is first in an idle state as the target welding device when selecting the target welding device.
4. The welding production system of claim 1, wherein the sensing unit extends a first set distance from the deviation detector opposite the direction of belt travel, and wherein the sensing unit extends a second set distance from the gripping point opposite the direction of belt travel.
5. The welding production system of claim 1, wherein a plurality of sets of the third barrier unit are disposed in a conveyor belt conveying direction before the first barrier unit and the second barrier unit.
6. The welding production system of claim 1, wherein the blocking unit comprises a power section and a blocking section, the blocking section of the first blocking unit being comprised of a plurality of blocking members; the first blocking unit is used for blocking a workpiece at the deviation detection position, and specifically comprises:
the power part of the first blocking unit stops driving the conveyor belt to rotate;
the blocking part of the first blocking unit vertically moves upwards along a perpendicular line of a contact surface of the workpiece and the transmission belt, and blocks the workpiece reaching the deviation detection position from moving along the transmission direction of the transmission belt;
the blocking part of the first blocking unit vertically moves upwards along a perpendicular line of a contact surface of the workpiece and the transmission belt, and lifts the workpiece at the deviation detection position;
the blocking part of the first blocking unit clamps the lifted workpiece between the plurality of blocking pieces, so that the center of the lifted workpiece is at least positioned on the center line of the conveyor belt.
7. The welding production system of claim 6, wherein the blocking portion in the second blocking unit comprises two of the blocking members; the second blocking unit is used for blocking the workpiece at the grabbing point, and specifically comprises:
the power part of the second blocking unit stops driving the conveyor belt to rotate;
the blocking part of the second blocking unit moves along the contact surface of the workpiece and the transmission belt and is perpendicular to the transmission direction of the transmission belt, so that the workpiece can be blocked to the grabbing point.
8. The welding production system of claim 1, wherein the control unit is further configured to send the workpiece with the third deviation value to the first location.
9. The welding production system of claim 1, wherein during the transfer of the third workpiece to the processing unit, the target welding device becomes abnormal, and the third workpiece waits on the third blocking unit before the processing unit until there are other welding devices in the processing unit to become idle.
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| CN201811649002.8A CN109530993B (en) | 2018-12-30 | 2018-12-30 | Welding production system |
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| CN204777617U (en) * | 2015-07-21 | 2015-11-18 | 杭州中为光电技术股份有限公司 | Feeding mechanical arm on LED lamp |
| CN108328250A (en) * | 2018-01-25 | 2018-07-27 | 大永精机（江苏）有限公司 | Positive and negative condition discriminating apparatus when automobile retainer pan feeding |
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| CN108406177B (en) * | 2018-03-15 | 2020-07-14 | 广州中国科学院工业技术研究院 | Battery welding equipment and battery welding method |
| CN108857121A (en) * | 2018-07-10 | 2018-11-23 | 佛山市益鑫禾机械自动化装备有限公司 | Robot welding system |
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