Door keel assembly automatic overturning continuous production workbench and control method

Abstract

The application discloses a door keel assembly automatic overturning continuous production workbench and a control method, relates to the technical field of door production and processing, and comprises a rack, a rotating mechanism, a clamping mechanism, a workbench and a control assembly. The clamping mechanism comprises two first clamps, each first clamp comprises two second clamps, the rotating mechanism is used for driving the clamping mechanism to rotate around an overturning axis, and the workbench comprises a workbench surface and a lifting assembly. After profile members used for manufacturing door keels are placed on the workbench surface, the clamping mechanism can automatically move the profile members to designed positions, and automatic splicing of the door keels is realized. Then, the clamping mechanism clamps the door keels through cooperation of the first clamps and the second clamps. After one side of the door keel is processed, the lifting assembly drives the workbench surface to move away from the clamping mechanism, the rotating mechanism drives the clamping mechanism to rotate, and the door keel is overturned, so that workers can process the other side of the door keel, and the degree of automation and the processing quality are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of door production and processing, in particular to a door keel assembly automatic overturning continuous production workbench and a control method. BACKGROUND

[0002] Door keel assembly processing is mainly used to improve the stability, deformation resistance and durability of the door frame. The door keel is mostly composed of profiled steel spliced together. In the processing process, the profiled steel is first cut into a specific length according to the design size, then spliced, and after splicing, one side is fixed first, and then the other side is fixed. In the current splicing operation of the skeleton, the splicing of the profiled material and the overturning of the skeleton are mostly completed manually by workers, with poor positioning accuracy and low production efficiency. Some existing technologies have disclosed door keel assembly overturning devices for door frames, but most of them can only perform simple overturning work after the door keel is assembled, and the splicing of the skeleton still needs to be completed manually by workers. The positioning work often needs to be measured with measuring tools, which is prone to errors. Moreover, due to the differences in the proficiency of different workers, the efficiency is low and the quality is difficult to control when the skeleton is mass-produced, and the processing precision is also difficult to control. SUMMARY

[0003] To solve the above technical problems, the present application provides a door keel assembly automatic overturning continuous production workbench and a control method.

[0004] The door keel assembly automatic overturning continuous production workbench comprises a rack, a rotating mechanism, a clamping mechanism, a workbench and a control assembly. The clamping mechanism is rotatably connected to the rack. The clamping mechanism comprises two first clamps that can move closer to or away from each other in a first direction. Each first clamp comprises two second clamps that can move closer to or away from each other in a second direction. The first direction is perpendicular to the second direction. The rotating mechanism is fixedly connected to the rack and is used to drive the clamping mechanism to rotate around a overturning axis. The overturning axis is parallel to the first direction. The workbench comprises a workbench surface and a lifting assembly. The workbench surface is used to support the profiled members of the door keel. The lifting assembly is used to drive the workbench surface to move closer to or away from the clamping mechanism. The control assembly is used to control the actions of the clamping mechanism, the rotating mechanism and the workbench.

[0005] After the worker places the profiled members used to make the door keel on the workbench surface, the first clamps and the second clamps can automatically move the profiled members to the designed position, realizing the automatic splicing of the door keel. Then the clamping mechanism clamps the door keel through the cooperation of the first clamps and the second clamps. After the processing of the door keel is completed, the lifting assembly drives the workbench surface to move away from the clamping mechanism, and the rotating mechanism drives the clamping mechanism to rotate, thereby overturning the profiled members, so that the worker can process the other side of the profiled members.

[0006] Specifically, the clamping mechanism further includes a base frame, a first position sensor, and at least one first cylinder. The base frame is rotatably connected to the frame, and the first clamp is slidably connected to the base frame. The first cylinder drives the first clamp to move along the first direction, so that the two first clamps move closer to or further apart. The first position sensor measures the distance between the two first clamps. Pneumatic transmission has the characteristics of fast response speed and large output force. Furthermore, when there are many moving parts, using pneumatic transmission helps to reduce the number of power sources and lower the control difficulty.

[0007] Specifically, the first clamp further includes a support member, a second position sensor, and at least one second cylinder. The support member is slidably connected to the base frame, and both second clamps are slidably connected to the support member. The second cylinder is used to drive the second clamps to move along the second direction so that the two second clamps move closer to or further away from each other. The second position sensor is used to measure the distance between the two second clamps.

[0008] Furthermore, the first clamp also includes a first pressure sensor and a second pressure sensor. The first pressure sensor is disposed on the side of the support member that contacts the profile component, and the second pressure sensor is disposed on the side of the second clamp that contacts the profile component. Both the first and second pressure sensors are electrically connected to the control component. The pressure sensors allow for convenient control of the clamping force of the first and second clamps, providing appropriate clamping force for different profile components. This prevents the profile component from falling during flipping due to insufficient clamping force, or from being damaged due to excessive clamping force.

[0009] Furthermore, the worktable also includes at least one third pressure sensor, which is disposed between the worktable surface and the lifting assembly, and is electrically connected to the control assembly. The third pressure sensor is used to measure the weight of the profile component so as to adjust the clamping force of the first and second clamps according to the weight of the profile component.

[0010] Furthermore, the workbench also includes a rotary positioning bracket, a positioning bracket rotation assembly, and a positioning bracket lifting assembly. The rotary positioning bracket includes multiple first positioning parts and multiple second positioning parts, which cooperate to position and clamp the profile component used to manufacture the door frame. The second positioning parts are equipped with a first limit switch and a second limit switch, which cooperate to determine whether the profile component is correctly positioned. The positioning bracket rotation assembly drives the rotary positioning bracket to rotate around a vertical axis. The positioning bracket lifting assembly drives the rotary positioning bracket to rise or fall, so that the rotary positioning bracket is lower than the workbench surface.

[0011] By using a rotating positioning bracket, the profile components are accurately placed in the preset position, which facilitates the clamping mechanism to splice and clamp the profile components according to the predetermined program, reducing the labor intensity of workers and improving the splicing accuracy and quality of the door frame.

[0012] Furthermore, the worktable surface is provided with a retrieval through hole that matches the shape of the rotary positioning bracket. When the positioning bracket lifting assembly drives the rotary positioning bracket to descend, the rotary positioning bracket can pass through the retrieval through hole, and the worktable surface can remove the profile component from the first positioning part and the second positioning part. After all the processed profile components are placed on the rotary positioning bracket, the rotary positioning bracket descends below the worktable surface and places the profile components on the worktable surface, allowing the first clamp and the second clamp to move the profile components to complete the splicing work.

[0013] Furthermore, the first positioning part and the second positioning part can move closer to or further away from each other to facilitate the processing of door keels of different sizes and specifications.

[0014] This application also provides a control method for controlling the above-mentioned flipping device, comprising the following steps:

[0015] The profile component is placed in the first positioning part and the second positioning part;

[0016] Determine whether the profile component is placed correctly based on the switching states of the first limit switch and the second limit switch;

[0017] If the profile component is placed correctly, the rotating positioning bracket is rotated by a first preset angle;

[0018] Determine whether the number of rotations of the rotating positioning bracket is equal to the first threshold. If not, repeat the above steps. If yes, lower the rotating positioning bracket so that it is below the worktable surface.

[0019] The two first clamps and the two second clamps move close to each other, move and clamp the profile components, and complete the assembly of the door keel.

[0020] Furthermore, the correct placement of the profile component is determined by the following conditions:

[0021] When the first limit switch is not covered by the profile component and the second limit switch is covered by the profile component, the profile component is correctly positioned.

[0022] The technical effects and advantages of this invention are as follows:

[0023] 1. The automatic splicing of door joists can be achieved through the cooperation of the worktable and clamping mechanism, which improves the automation level of the door joist manufacturing process, the manufacturing precision of the door joists, and the quality of the door joists.

[0024] 2. By setting up a rotating mechanism to achieve automatic rotation of the door keel, the automation level of the door keel manufacturing process is improved, the labor intensity of workers is reduced, and the accident rate in the production process is reduced, effectively improving the safety of the production process. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of the flipping device provided by the present invention.

[0026] Figure 2 This is a three-dimensional schematic diagram of the flipping device provided by the present invention.

[0027] Figure 3 This is a three-dimensional schematic diagram of the rotating positioning bracket provided by the present invention.

[0028] Figure 4 This is a cross-sectional view of the rotary positioning bracket provided by the present invention.

[0029] Figure 5 This is a schematic diagram of the profile component placed on the rotating positioning bracket in this invention.

[0030] Figure 6 This is a schematic diagram showing the rotating positioning bracket lowered below the worktable surface in this invention.

[0031] The attached figures are labeled as follows: 1. Frame; 2. Rotating mechanism; 21. Drive motor; 22. Transmission assembly; 3. Clamping mechanism; 31. First clamp; 32. Second clamp; 33. Base frame; 34. First position sensor; 35. First cylinder; 36. Support component; 37. Second position sensor; 38. Second cylinder; 39. First pressure sensor; 310. Second pressure sensor; 4. Worktable; 41. Worktable surface; 411. Retraction through hole; 42. Lifting assembly; 43. Third pressure sensor; 44. Rotating positioning bracket; 441. First positioning part; 442. Second positioning part; 443. First limit switch; 444. Second limit switch; 45. Positioning bracket rotating assembly; 46. Positioning bracket lifting assembly; 5. Control assembly; 51. Start foot pedal; 52. Stop foot pedal; 53. Forward switch; 54. Reverse switch; 1001. Profile component. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1

[0034] refer to Figures 1 to 6 This invention provides an automatic rotating continuous production workbench for assembling door keels, comprising a frame 1, a rotating mechanism 2, a clamping mechanism 3, a worktable 4, and a control component 5. The clamping mechanism 3 is rotatably connected to the frame 1 and includes two first clamps 31 that can move closer or further apart in a first direction. Each first clamp 31 includes two second clamps 32 that can move closer or further apart in a second direction, the first direction being perpendicular to the second direction. The rotating mechanism 2 is fixedly connected to the frame 1 and drives the clamping mechanism 3 to rotate around a rotating axis, the rotating axis being parallel to the first direction. The worktable 4 includes a work surface 41 and a lifting component 42. The work surface 41 supports the profile component 1001 of the door keel, and the lifting component 42 drives the work surface 41 to move closer or further away from the clamping mechanism 3. The control component 5 controls the operation of the clamping mechanism 3, the rotating mechanism 2, and the worktable 4.

[0035] After the worker places the profile components used to make the door frame onto the workbench 41, the first clamp 31 and the second clamp 32 can automatically move the profile components to the designed position, realizing the automatic splicing of the door frame profile components 1001. Then, the clamping mechanism 3 clamps the profile components 1001 by cooperating with the first clamp 31 and the second clamp 32. After the profile components 1001 are processed, the lifting component 42 drives the workbench 41 away from the clamping mechanism 3, and the rotating mechanism 2 drives the clamping mechanism 3 to rotate, thereby flipping the profile components 1001 so that the worker can process the other side of the profile components 1001.

[0036] There are various driving methods for the first clamp 31 and the second clamp 32, specifically, such as Figure 1 As shown, the clamping mechanism 3 includes a base frame 33, a first position sensor 34, and at least one first cylinder 35. The base frame 33 is rotatably connected to the frame 1, and the first clamp 31 is slidably connected to the base frame 33. The first cylinder 35 is used to drive the first clamp 31 to move along a first direction, so that the two first clamps 31 move closer to or further apart from each other. The first position sensor 34 is used to measure the distance between the two first clamps 31. Pneumatic transmission has the characteristics of fast response speed and large output force. Moreover, when there are many moving parts, using pneumatic transmission is beneficial to reduce the number of power sources and reduce the control difficulty.

[0037] In actual production, two first cylinders 35 can be set up so that the two first clamps 31 can move closer or further apart simultaneously, which helps to reduce the stroke of a single cylinder and reduce the cylinder size. Alternatively, as... Figure 1 As shown, a first cylinder 35 is set up to push one of the two first clamps 31 to move, while the other first clamp 31 remains stationary, which can reduce the complexity of the control air circuit.

[0038] Similarly, the first clamp 31 also includes a support member 36, a second position sensor 37, and at least one second cylinder 38. The support member 36 is slidably connected to the base frame 33, and both second clamps 32 are slidably connected to the support member 36. The second cylinder 38 is used to drive the second clamps 32 to move along a second direction so that the two second clamps 32 move closer to or further away from each other. The second position sensor 37 is used to measure the distance between the two second clamps 32.

[0039] The first clamp 31 and the second clamp 32 can also be driven by a screw with a double helix and a sliding sleeve. The helical directions at both ends of the screw are opposite. When the screw rotates, it can drive the two first clamps 31 or the two second clamps 32 to move closer to each other. Alternatively, a ball screw and sliding sleeve drive method can be used. The ball screw has helical grooves with opposite helical directions at both ends. When the ball screw rotates, the two sliding sleeves fitted on the ball screw will move closer or further apart simultaneously. The above two drive methods have the advantage of high precision, but the disadvantage is that the clamping force provided is relatively small. When the profile component 1001 of the gantry is heavy, it cannot be effectively clamped and is prone to falling off when flipped. At the same time, both the screw and the ball screw need to be driven by a synchronous motor, which increases the complexity of the control system.

[0040] Specifically, such as Figure 1 As shown, the rotating mechanism 2 includes a drive motor 21, a transmission assembly 22, and a frequency converter. The drive motor 21 drives the clamping mechanism 3 to rotate around the flipping axis through the transmission assembly 22, and the frequency converter is used to control the speed of the drive motor 21. When flipping the profile component 1001 of the door frame, by changing the speed of the drive motor 21, the flipping process is made smoother, so that the profile component 1001 can be flipped with a smaller clamping force, thus better protecting the profile component 1001.

[0041] There are several ways to implement the transmission component 22, such as Figure 1 As shown, Embodiment 1 employs a gear transmission method, which offers high connection rigidity and stable torque transmission. In actual production, the transmission component 22 can also utilize chain drive, belt drive, or other transmission methods.

[0042] The lifting assembly 42 in the worktable 4 can be implemented in various ways, such as... Figure 1 As shown, the worktable 41 can be driven to move by a hydraulic cylinder or a pneumatic cylinder, or a scissor lift mechanism can be used.

[0043] Furthermore, such as Figure 2 As shown, the control assembly 5 also includes a start foot pedal 51 and a stop foot pedal 52. The start foot pedal 51 controls the rotation mechanism 2, and the stop foot pedal 52 stops the rotation mechanism 2. After the worker finishes processing the profile component 1001, stepping on the foot pedal will activate the rotation mechanism 2 to flip the profile component 1001. Once the profile component 1001 is in place, stepping on the stop foot pedal 52 will stop the rotation mechanism 2.

[0044] Furthermore, a forward switch 53 and a reverse switch 54 can be provided to change the rotation direction of the drive motor 21. For example, when the rotating mechanism 2 drives the clamping mechanism 3 to complete the flipping of the profile component 1001, the base 33 of the clamping mechanism 3 triggers the reverse switch 54. When the worker steps on the start pedal 51, the drive motor 21 begins to reverse, causing the clamping mechanism 3 to rotate clockwise. When the clamping mechanism 3 reaches its position, it triggers the forward switch 53, and the rotation direction of the drive motor 21 changes again. When the worker steps on the start pedal 51 again, the drive motor 21 rotates counterclockwise. This avoids the problem of excessive tangling of wires or pipes caused by the motor always rotating in one direction.

[0045] Furthermore, the first clamp 31 also includes a first pressure sensor 39 and a second pressure sensor 310. The first pressure sensor 39 is disposed on the side of the support member 36 that contacts the profile member 1001, and the second pressure sensor 310 is disposed on the side of the second clamp 32 that contacts the profile member 1001. Both the first pressure sensor 39 and the second pressure sensor 310 are electrically connected to the control component 5. The pressure sensors allow for convenient control of the clamping force of the first clamp 31 and the second clamp 32, so as to provide an appropriate clamping force for different profile members 1001, preventing the profile member 1001 from falling when flipped due to insufficient clamping force, or causing damage to the profile member 1001 due to excessive clamping force.

[0046] Furthermore, the worktable 4 also includes at least one third pressure sensor 43, which is disposed between the worktable surface 41 and the lifting assembly 42, and is electrically connected to the control assembly 5. The third pressure sensor 43 is used to measure the weight of the profile component 1001 so as to adjust the clamping force of the first clamp 31 and the second clamp 32 according to the weight of the profile component 1001.

[0047] Example 2

[0048] When workers manually place profile component 1001, they may place it at an angle or even outside the working range of clamping mechanism 3, preventing the clamping mechanism 3 from assembling the profile component 1001 together. Furthermore, to place the profile component 1001 in the correct position, workers need to continuously move it, resulting in high labor intensity and safety hazards. Therefore, an automatic positioning and placement mechanism is needed to ensure that the profile component 1001 is placed within the working range of clamping mechanism 3.

[0049] Based on the above analysis, this embodiment is a further improvement on Embodiment 1, such as... Figures 3 to 6As shown, the workbench 4 also includes a rotary positioning bracket 44, a positioning bracket rotation assembly 45, and a positioning bracket lifting assembly 46. The rotary positioning bracket 44 includes multiple first positioning parts 441 and multiple second positioning parts 442. The first positioning parts 441 and the second positioning parts 442 cooperate to position and clamp the profile component 1001 of the door frame. The second positioning parts 442 are provided with a first limit switch 443 and a second limit switch 444. The first limit switch 443 and the second limit switch 444 cooperate to determine whether the profile component 1001 is placed correctly. The positioning bracket rotation assembly 45 is used to drive the rotary positioning bracket 44 to rotate around the vertical axis. The positioning bracket lifting assembly 46 is used to drive the rotary positioning bracket 44 to rise or fall so that the rotary positioning bracket 44 is lower than the workbench surface 41.

[0050] The control method for the improved flipping device is as follows:

[0051] The profile component 1001 transferred from the previous process is placed on the first positioning part 441 and the second positioning part 442. The first positioning part 441 and the second positioning part 442 are configured to restrict the movement of the profile component 1001 in a direction perpendicular to its length. The first positioning part 441 can restrict the movement of one end of the profile component 1001. The first limit switch 443 and the second limit switch 444 on the second positioning part 442 can determine whether the profile component 1001 is placed correctly. Figure 5 Taking the chamfered profile component 1001 as an example, when the chamfer direction of the profile component 1001 is correct and its length is accurate, the first limit switch 443 is not blocked, and the second limit switch 444 is blocked. If the chamfer direction of the profile component 1001 is incorrect, the first limit switch 443 is blocked, and the second limit switch 444 is not blocked. If the length of the profile component 1001 is short, neither the first limit switch 443 nor the second limit switch 444 is blocked; if the length of the profile component 1001 is too long, both the first limit switch 443 and the second limit switch 444 are blocked.

[0052] When the first limit switch 443 and the second limit switch 444 determine that the profile component 1001 is correctly positioned, the rotating positioning bracket 44 rotates by a first preset angle. The specific angle needs to be determined according to the structure of the door frame, for example... Figure 5 and Figure 6 As shown, a common door frame is composed of four side frames spliced ​​together. The rotating positioning bracket 44 needs to rotate 90° each time to receive the next profile component 1001 passed over.

[0053] The determination of whether the number of rotations of the rotating positioning bracket 44 equals the first threshold, i.e., whether all the profile components 1001 used for assembling the door keel have been placed on the rotating positioning bracket 44, depends on the structure of the door keel.Figure 5 and Figure 6 As shown, after the rotating positioning bracket 44 rotates four times, all the profile components 1001 have been placed and the rotating positioning bracket 44 has rotated into position. The rotating positioning bracket 44 is then lowered so that it is below the worktable surface 41, and the profile components 1001 are placed on the worktable surface 41. Subsequently, the two first clamps 31 and the two second clamps 32 move closer to each other, move and clamp the profile components 1001, and complete the assembly of the door frame.

[0054] Specifically, the worktable 41 is provided with a recycling through hole 411 that matches the shape of the rotating positioning bracket 44. When the positioning bracket lifting assembly 46 drives the rotating positioning bracket 44 to descend, the rotating positioning bracket 44 can pass through the recycling through hole 411, and the worktable 41 can remove the profile component 1001 from the first positioning part 441 and the second positioning part 442.

[0055] The positioning bracket rotating assembly 45 can be like Figure 4 The method shown uses a stepper motor and gear transmission, but other methods can also be used.

[0056] Positioning bracket lifting assembly 46 can be like Figure 4 The method shown is implemented using a cylinder, but it can also be implemented using other methods such as gears and racks.

[0057] There are several ways to implement the first limit switch 443 and the second limit switch 444, such as using a micro switch or a laser switch.

[0058] Furthermore, the first positioning part 441 and the second positioning part 442 can be configured to be adjustable, moving closer or further apart to accommodate the processing of door keels of different specifications and sizes. There are many specific implementation methods, such as... Figure 3 The slide connection shown can also be implemented in other ways, which are well known to those skilled in the art and will not be described in detail here.

[0059] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A continuous production workbench for assembling door keels, characterized in that, It includes a frame (1), a rotating mechanism (2), a clamping mechanism (3), a worktable (4), and a control assembly (5); The clamping mechanism (3) is rotatably connected to the frame (1). The clamping mechanism (3) includes two first clamps (31) that can move closer or further away from each other in a first direction. Each first clamp (31) includes two second clamps (32) that can move closer or further away from each other in a second direction. The first direction is perpendicular to the second direction. The rotating mechanism (2) is fixedly connected to the frame (1) and is used to drive the clamping mechanism (3) to rotate around the flipping axis, which is parallel to the first direction; The workbench (4) includes a workbench surface (41) and a lifting assembly (42). The workbench surface (41) is used to support the profile component (1001) of the door frame. The lifting assembly (42) is used to drive the workbench surface (41) to move closer to or away from the clamping mechanism (3). The control component (5) is used to control the operation of the clamping mechanism (3), the rotating mechanism (2), and the worktable (4); The workbench (4) further includes a rotating positioning bracket (44), a positioning bracket rotating assembly (45), and a positioning bracket lifting assembly (46); the rotating positioning bracket (44) includes a plurality of first positioning parts (441) and a plurality of second positioning parts (442), the first positioning parts (441) and the second positioning parts (442) cooperate to position and clamp the profile component (1001), the second positioning part (442) is provided with a first limit switch (443) and a second limit switch (444), the first limit switch (443) and the second limit switch (444) cooperate to determine whether the profile component (1001) is placed correctly; the positioning bracket rotating assembly (45) is used to drive the rotating positioning bracket (44) to rotate around the vertical axis; the positioning bracket lifting assembly (46) is used to drive the rotating positioning bracket (44) to rise or fall so that the rotating positioning bracket (44) is lower than the workbench surface (41).

2. The automatic rotating continuous production workbench for assembling door keels according to claim 1, characterized in that, The clamping mechanism (3) further includes a base frame (33), a first position sensor (34), and at least one first cylinder (35). The base frame (33) is rotatably connected to the frame (1), and the first clamp (31) is slidably connected to the base frame (33). The first cylinder (35) is used to drive the first clamp (31) to move along the first direction so that the two first clamps (31) move closer or further apart from each other. The first position sensor (34) is used to measure the distance between the two first clamps (31).

3. The automatic rotating continuous production workbench for assembling door keels according to claim 2, characterized in that, The first clamp (31) further includes a support (36), a second position sensor (37), and at least one second cylinder (38). The support (36) is slidably connected to the base frame (33), and both second clamps (32) are slidably connected to the support (36). The second cylinder (38) is used to drive the second clamps (32) to move along the second direction so that the two second clamps (32) move closer to or further away from each other. The second position sensor (37) is used to measure the distance between the two second clamps (32).

4. The automatic rotating continuous production workbench for assembling door keels according to claim 3, characterized in that, The first clamp (31) further includes a first pressure sensor (39) and a second pressure sensor (310); the first pressure sensor (39) is disposed on the side of the support member (36) that contacts the profile member (1001), and the second pressure sensor (310) is disposed on the side of the second clamp (32) that contacts the profile member (1001). Both the first pressure sensor (39) and the second pressure sensor (310) are electrically connected to the control component (5).

5. The automatic rotating continuous production workbench for assembling door keels according to claim 4, characterized in that, The workbench (4) also includes at least one third pressure sensor (43), which is disposed between the workbench surface (41) and the lifting assembly (42), and is electrically connected to the control assembly (5).

6. The automatic rotating continuous production workbench for assembling door keels according to claim 5, characterized in that, The worktable (41) is provided with a recycling through hole (411) that matches the shape of the rotating positioning bracket (44). When the positioning bracket lifting assembly (46) drives the rotating positioning bracket (44) to descend, the rotating positioning bracket (44) can pass through the recycling through hole (411), and the worktable (41) can remove the profile component (1001) from the first positioning part (441) and the second positioning part (442).

7. The automatic rotating continuous production workbench for assembling door keels according to claim 6, characterized in that, The first positioning part (441) and the second positioning part (442) can move closer to or further away from each other.

8. A control method for an automatic rotating continuous production workbench for gantry frame assembly, used to control the automatic rotating continuous production workbench for gantry frame assembly as described in claim 7, characterized in that, The process includes the following steps: placing the profile component (1001) in the first positioning part (441) and the second positioning part (442); determining whether the profile component (1001) is correctly positioned according to the switching states of the first limit switch (443) and the second limit switch (444); if the profile component (1001) is correctly positioned, rotating the rotating positioning bracket (44) by a first preset angle; determining whether the number of rotations of the rotating positioning bracket (44) is equal to a first threshold; if not, repeating the above steps; if so, lowering the rotating positioning bracket (44) so ​​that the rotating positioning bracket (44) is lower than the worktable surface (41); moving the two first clamps (31) and the two second clamps (32) closer to each other, moving and clamping the profile component (1001) to complete the assembly of the door frame.

9. The control method for the automatic flipping continuous production workbench for gantry assembly according to claim 8, characterized in that, The correct placement of the profile component (1001) is determined by the following conditions: when the first limit switch (443) is not covered by the profile component (1001) and the second limit switch (444) is covered by the profile component (1001), the profile component (1001) is correctly placed.

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