Automatic tool bit welding equipment for numerical control machine tool

Abstract

The invention discloses automatic tool bit welding equipment for a numerical control machine tool, and relates to the technical field of welding equipment.The automatic tool bit welding equipment comprises two movable grabbing mechanisms, one movable grabbing mechanism is connected with a tool handle fixing mechanism, the other movable grabbing mechanism is connected with a head fixing mechanism, and a welding assembly is arranged in the middle of a rack; the knife handle fixing mechanism comprises a first mounting ring, a first adsorption sliding block is mounted on the inner side of the first mounting ring, a first connecting curved bar, a second telescopic air cylinder and a first butt joint block are mounted on the first adsorption sliding block, and the first butt joint block is in butt joint with a movable grabbing mechanism grabbing a knife handle; the head fixing mechanism comprises a second mounting ring, a second adsorption sliding block is mounted on the inner side of the second mounting ring, a second connecting curved bar, a third telescopic air cylinder and a second butt joint block are mounted on the second adsorption sliding block, and the second butt joint block is in butt joint with a movable grabbing mechanism grabbing a head; coaxial rotating installation of the cutter handle and the head is achieved through the first installation ring and the second installation ring, and continuous welding operation is conducted on the butt joint portion of the welding assembly in combination.

Description

Technical Field

[0001] The present invention relates to the technical field of welding equipment, and particularly to an automatic welding equipment for tool heads used in numerical control machine tools. Background Art

[0002] Numerical control machine tools rely on various types and models of heads to perform machining operations on parts. Among them, the head mainly includes a head composed of a tool shank and a head welded together, and after being grasped by a grasping mechanism, it performs machining on the parts.

[0003] When welding the tool shank and the head, it is necessary to fix the tool shank and the head, and use a welding equipment to weld the docking part of the tool shank and the head. However, the existing welding method requires multiple attitude adjustments and re-fixings of the tool shank and the head, and cannot be welded into a single form at one time, resulting in low welding efficiency and inability to guarantee welding quality. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatic welding equipment for tool heads used in numerical control machine tools to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] An automatic welding equipment for tool heads used in numerical control machine tools includes a frame and an adjustment groove in the middle of the frame. There are a conveyor belt one and a conveyor belt two arranged at both ends of the frame. Two groups of mobile grasping mechanisms are slidably installed in the adjustment groove. One group of mobile grasping mechanisms is connected with a tool shank fixing mechanism, and the other group of mobile grasping mechanisms is connected with a head fixing mechanism. A welding assembly is arranged in the middle of the frame.

[0007] The tool shank fixing mechanism includes a mounting ring one installed in a lifting manner. Adsorption sliders one are symmetrically slidably installed along the diameter direction inside the mounting ring one. The adsorption sliders one are installed with connecting curved rods one, telescopic cylinders two, and docking blocks one. The docking blocks one are docked with the mobile grasping mechanisms that grasp the tool shanks.

[0008] The head fixing mechanism includes a mounting ring two installed in a lifting manner. Adsorption sliders two are symmetrically slidably installed along the diameter direction inside the mounting ring two. The adsorption sliders two are installed with connecting curved rods two, telescopic cylinders three, and docking blocks two. The docking blocks two are docked with the mobile grasping mechanisms that grasp the heads.

[0009] A telescopic column is fixedly arranged on the adsorption slider two, and a plug hole is arranged on the adsorption slider one. The telescopic column and the plug hole cooperate with each other.

[0010] As a further solution of the present invention: The tool handle fixing mechanism further includes an external gear ring provided on the outer side of the first mounting ring. A bending frame is fixedly connected to one of the adsorption sliders. A mating gear two is connected to the bending frame. The mating gear two meshes with the external gear ring, and the mating gear two is connected to a second motor.

[0011] As a further solution of the present invention: When the tool handle fixing mechanism is docked with the mobile grasping mechanism where it is located, the central axis of the tool handle welding part coincides with the central axis of the first mounting ring. When the head fixing mechanism is docked with the mobile grasping mechanism where it is located, the central axis of the head welding part coincides with the central axis of the second mounting ring.

[0012] As a further solution of the present invention: The mobile grasping mechanism includes a first mobile frame and a second mobile frame. The first mobile frame and the second mobile frame are slidably clamped with the adjustment groove. The tops of the first mobile frame and the second mobile frame are fixedly installed with an upper slide rail. A displacement component is installed on the upper slide rail. The displacement component is connected to a grasping component. The grasping component includes a first clamping plate and a second clamping plate. The second clamping plate is movably connected to the first clamping plate through a plugging column. A first telescopic cylinder is arranged between the first clamping plate and the second clamping plate. Mounting slide plates are arranged on both sides of the first clamping plate and the second clamping plate. A suspension frame is arranged between the mounting slide plates. An electromagnetic adsorption block is arranged at the top of the suspension frame. The electromagnetic adsorption block is connected to the displacement component.

[0013] As a further solution of the present invention: The displacement component includes a rack provided at the bottom of the upper slide rail. A U-shaped frame is slidably installed at the bottom of the upper slide rail. The U-shaped frame is slidably installed with the upper slide rail through a clamping slider. A mating gear one is rotatably installed between the U-shaped frames. The mating gear one meshes with the rack. The mating gear one is connected to a first motor. The electromagnetic adsorption block is adsorbed and connected to the bottom of the U-shaped frame.

[0014] As a further solution of the present invention: An annular clamping groove one is provided inside the first mounting ring. The adsorption slider one is slidably installed with the annular clamping groove one. An annular clamping groove two is provided inside the second mounting ring. The adsorption slider two is slidably installed with the annular clamping groove two. Docking holes are provided on the sides of the first clamping plate and the second clamping plate. The first docking block and the second docking block are respectively docked and matched with the docking holes in the corresponding mobile grasping mechanism.

[0015] As a further solution of the present invention: Lifting blocks one are installed on both sides of the first mobile frame connected to the tool handle fixing mechanism in a lifting manner. An L-shaped frame one is provided on the lifting block one. The end of the L-shaped frame one is fixedly connected to the outer side of the first mounting ring; Lifting blocks two are installed on both sides of the first mobile frame connected to the head fixing mechanism in a lifting manner. An L-shaped frame two is provided on the lifting block two. The end of the L-shaped frame two is fixedly connected to the outer side of the second mounting ring.

[0016] As a further solution of the present invention: The welding assembly includes a lifting motor fixedly installed, the lifting motor is vertically installed, the lifting motor is connected with a ball joint, the rotating part of the ball joint is connected with a welding head, two limiting discs are arranged on the welding head, a sliding sleeve is sleeved between the two limiting discs, and a pneumatic telescopic rod is rotatably connected between the sliding sleeve and the fixed part of the ball joint, and three pneumatic telescopic rods are provided.

[0017] As a further solution of the present invention: A walking assembly is further arranged between the mobile grasping mechanism and the adjustment groove. The walking assembly includes a connecting frame arranged between the first mobile frame and the second mobile frame. An installation plate is vertically arranged on the connecting frame. Walking wheels are rotatably installed at both ends of the installation plate. The walking wheels are in contact installation with the side wall of the adjustment groove. A motor three is fixedly arranged on the connecting frame. A driving gear and a driven gear that mesh with each other are rotatably installed at the bottom of the connecting frame. The motor three is connected with the driving gear. The driving gear is installed in transmission with the walking wheel at the end through a first belt. The driven gear is installed in transmission with the walking wheel at the end through a second belt.

[0018] As a further solution of the present invention: A positioning transmitter is arranged on the top of the first installation ring, and a positioning receiver is correspondingly arranged on the top of the second installation ring.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] (1) The adsorption slider one and the adsorption slider two are docked by using the telescopic column. When controlling the rotation of the first installation ring, the second installation ring will be driven to rotate synchronously. Combined with the welding assembly, continuous welding of the docking part between the tool handle and the head is realized until the welding is completed, avoiding the interruption of welding due to secondary fixing between the tool handle and the head.

[0021] (2) The driving gear two and the external gear ring are driven to mesh with each other by the motor two. At this time, the adsorption slider one connected with the bending frame is driven. Since the other symmetrically arranged adsorption slider two is docked with the mobile grasping mechanism through the docking block one, the tool handle will be driven to rotate around the central axis of the first installation ring. The adsorption slider two carrying the head is docked with the adsorption slider one through the telescopic column. When the adsorption slider one rotates along the inner side of the first installation ring, the head will be driven to rotate along the inner side of the second installation ring synchronously, so as to realize the rotation of the tool handle and the head on the central axis between the first installation ring and the second installation ring, and cooperate with the welding assembly for welding.

[0022] (3) Through the first moving frame and the slide rail installed on the moving frame, the shifting component is used to drive the grasping component closer to the first conveyor belt or the second conveyor belt. When the grasping component reaches the designated position, the first telescopic cylinder is used to control the first clamping plate and the second clamping plate to gather, so as to grasp the tool handle or the head on the first conveyor belt or the second conveyor belt. After grasping the tool handle or the head, it returns along the original path. Subsequently, the tool handle fixing mechanism or the head fixing mechanism is controlled to rise, so that the first docking block or the second docking block is docked with the grasping component. At the same time, the connection of the electromagnetic adsorption block is disconnected, and the grasping component and the tool handle or the head are transferred into the first mounting ring or the second mounting ring. Subsequently, the first mounting ring or the second mounting ring is continuously controlled to descend to avoid movement interference between the grasping component and the shifting component when the tool handle or the head is subsequently controlled to rotate. Description of the Drawings

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 It is a schematic diagram of the installation of the tool handle fixing mechanism in the present invention.

[0025] Figure 3 It is a schematic diagram of the connection between the tool handle fixing mechanism and the mobile grasping mechanism in the present invention.

[0026] Figure 4 It is a schematic diagram of the structure of the mobile grasping mechanism in the present invention.

[0027] Figure 5 It is a schematic diagram of the structure of the grasping component in the present invention.

[0028] Figure 6 It is a schematic diagram of the structure of the tool handle fixing mechanism in the present invention.

[0029] Figure 7 It is Figure 6 The enlarged schematic diagram of part A in

[0030] Figure 8 It is a schematic diagram of the structure of the head fixing mechanism in the present invention.

[0031] Figure 9 It is a schematic diagram of the structure of the welding component in the present invention.

[0032] Figure 10 It is a schematic diagram of the structure of the walking component in the present invention.

[0033] In the figure: 1, frame; 10, adjustment groove; 11, conveyor belt 1; 12, conveyor belt 2; 2, mobile grasping mechanism; 20, mobile frame 1; 21, mobile frame 2; 22, upper slide rail; 23, displacement assembly; 230, U-shaped frame; 231, clamping slider; 232, mating gear 1; 233, motor 1; 24, grasping assembly; 240, clamping plate 1; 241, clamping plate 2; 242, docking hole; 243, plug-in column; 245, telescopic cylinder 1; 246, mounting slide plate; 247, suspension bracket; 248, electromagnetic adsorption block; 3, tool holder fixing mechanism; 30, lifting block 1; 300, L-shaped frame 1; 31, mounting ring 1; 32, annular clamping groove 1; 33, adsorption slider 1; 330, plug-in hole; 34, connecting curved rod 1; 35, telescopic cylinder 2; 36, docking block 1; 37, positioning transmitter; 38, external gear ring; 39, bending frame; 310, mating gear 2; 311, motor 2; 4, head fixing mechanism; 40, mounting ring 2; 41, lifting block 2; 42, L-shaped frame 2; 43, annular clamping groove 2; 44, adsorption slider 2; 45, telescopic column; 46, positioning receiver; 47, connecting curved rod 2; 48, telescopic cylinder 3; 49, docking block 2; 5, welding assembly; 50, lifting motor; 51, ball joint; 52, pneumatic telescopic rod; 53, welding head; 54, limit disc; 55, sliding sleeve; 6, walking assembly; 60, connecting frame; 61, mounting plate; 62, motor 3; 63, driving gear; 64, driven gear; 65, walking wheel; 66, belt 1; 67, belt 2. Detailed implementation manners

[0034] The technical solutions of the present invention will be further described in detail below in conjunction with the specific implementation manners.

[0035] Such as Figure 1 , Figure 2 , Figure 6 , Figure 8As shown in the figure, an automatic welding device for a tool head of a numerically controlled machine tool includes a frame 1 and an adjustment groove 10 in the middle of the frame 1. Conveyor belts 11 and 12 are arranged at both ends of the frame 1. Two groups of mobile grasping mechanisms 2 are slidably installed in the adjustment groove 10. One group of mobile grasping mechanisms 2 is connected to a tool handle fixing mechanism 3, and the other group of mobile grasping mechanisms 2 is connected to a head fixing mechanism 4. A welding assembly 5 is arranged in the middle of the frame 1. The tool handle fixing mechanism 3 includes a mounting ring 31 installed in a lifting manner. Adsorption sliders 33 are symmetrically slidably installed along the diameter direction inside the mounting ring 31. The adsorption sliders 33 are installed with connecting curved rods 34, telescopic cylinders 35 and docking blocks 36. The docking block 36 is docked with the mobile grasping mechanism 2 that grasps the tool handle. The head fixing mechanism 4 includes a mounting ring 40 installed in a lifting manner. Adsorption sliders 44 are symmetrically slidably installed along the diameter direction inside the mounting ring 40. The adsorption sliders 44 are installed with connecting curved rods 47, telescopic cylinders 48 and docking blocks 49. The docking block 49 is docked with the mobile grasping mechanism 2 that grasps the head. A telescopic column 45 is fixedly arranged on the adsorption slider 44, and a plug hole 330 is arranged on the adsorption slider 33. The telescopic column 45 and the plug hole 330 cooperate with each other.

[0036] Specifically, conveyor belts 11 and 12 are respectively arranged at both ends of the frame 1. The conveyor belt 11 is used to convey the tool handle and receive the whole of the tool handle and the head after welding is completed, and the conveyor belt 12 is used to convey the head. After one group of mobile grasping mechanisms 2 grasps the tool handle, it carries the tool handle to the position of the mounting ring 31, and then controls the tool handle fixing mechanism 3 to receive the tool handle and fix the tool handle in the mounting ring 31; after controlling the other group of mobile grasping mechanisms 2 to grasp the head, it carries the head to the position of the mounting ring 40, and then controls the head fixing mechanism 4 to receive the head.

[0037] After the tool handle and the head are docked with each other, the adsorption slider 33 and the adsorption slider 44 are docked by using the telescopic column 45. When controlling the mounting ring 31 to rotate, it will drive the mounting ring 40 to rotate synchronously. Combining with the welding assembly 5, continuous welding is realized at the docking part of the tool handle and the head until the welding is completed, avoiding the interruption of welding due to secondary fixing between the tool handle and the head. It should be noted that in order to realize continuous welding, when the welding assembly 5 approaches one of the telescopic columns 45, this group of telescopic columns 45 retracts to avoid causing movement interference to the welding assembly 5, while the other group of telescopic columns 45 remains docked, so as to realize the synchronous rotation between the mounting ring 31 and the mounting ring 40, and make the tool handle and the head rotate synchronously.

[0038] Further, as Figure 6 、 Figure 7As shown, the tool handle fixing mechanism 3 further includes an external gear ring 38 provided on the outer side of the first mounting ring 31. A bending frame 39 is fixedly connected to one of the adsorption sliders 33. A second mating gear 310 is connected to the bending frame 39. The second mating gear 310 meshes with the external gear ring 38, and the second mating gear 310 is connected to a second motor 311.

[0039] Specifically, the second motor 311 drives the second mating gear 310 to mesh with the external gear ring 38. At this time, the adsorption slider 33 connected to the bending frame 39 is driven. Since the other symmetrically arranged adsorption slider 44 is docked with the mobile grasping mechanism 2 through the first docking block 36, the tool handle will be driven to rotate around the central axis of the first mounting ring 31. The adsorption slider 44 carrying the head is docked with the adsorption slider 33 through the telescopic column 45. When the adsorption slider 33 rotates along the inner side of the first mounting ring 31, the head will be synchronously driven to rotate along the inner side of the second mounting ring 40, so as to realize the rotation of the tool handle and the head on the central axis between the first mounting ring 31 and the second mounting ring 40, and cooperate with the welding assembly 5 for welding.

[0040] Further, as Figure 4 、 Figure 8 shown, when the tool handle fixing mechanism 3 is docked with the mobile grasping mechanism 2, the central axis of the welding part of the tool handle coincides with the central axis of the first mounting ring 31. When the head fixing mechanism 4 is docked with the mobile grasping mechanism 2, the central axis of the welding part of the head coincides with the central axis of the second mounting ring 40.

[0041] Specifically, the tool handle and the head respectively coincide with the central axes of the first mounting ring 31 and the second mounting ring 40, so that the welding assembly 5 can perform welding operations when contacting the connection parts of the tool handle and the head, and the welding angle and position of the welding assembly 5 do not need to be adjusted during the whole welding process.

[0042] Further, as Figure 3 、 Figure 4 、 Figure 5As shown, the mobile grasping mechanism 2 includes a first mobile frame 20 and a second mobile frame 21. The first mobile frame 20 and the second mobile frame 21 are slidably clamped with the adjustment groove 10. An upper slide rail 22 is fixedly installed on the tops of the first mobile frame 20 and the second mobile frame 21. A displacement assembly 23 is installed on the upper slide rail 22. The displacement assembly 23 is connected to a grasping assembly 24. The grasping assembly 24 includes a first clamping plate 240 and a second clamping plate 241. The second clamping plate 241 is movably connected to the first clamping plate 240 through a plugging column 243. A first telescopic cylinder 245 is arranged between the first clamping plate 240 and the second clamping plate 241. Installation slide plates 246 are arranged on both sides of the first clamping plate 240 and the second clamping plate 241. A suspension frame 247 is arranged between the installation slide plates 246. An electromagnetic adsorption block 248 is arranged on the top of the suspension frame 247. The electromagnetic adsorption block 248 is interconnected with the displacement assembly 23.

[0043] Specifically, the upper slide rail 22 is installed through the first mobile frame 20 and the mobile frame. The displacement assembly 23 is used to drive the grasping assembly 24 to approach the first conveyor belt 11 or the second conveyor belt 12. When the grasping assembly 24 reaches the specified position, the first telescopic cylinder 245 is used to control the first clamping plate 240 and the second clamping plate 241 to gather together, so as to grasp the tool handle or the head of the first conveyor belt 11 or the second conveyor belt 12. After grasping the tool handle or the head, it returns along the original path. Subsequently, the tool handle fixing mechanism 3 or the head fixing mechanism 4 is controlled to rise, so that the first docking block 36 or the second docking block 49 is docked with the grasping assembly 24. At the same time, the connection of the electromagnetic adsorption block 248 is disconnected, and the grasping assembly 24 and the tool handle or the head are transferred into the first mounting ring 31 or the second mounting ring 40. Subsequently, the first mounting ring 31 or the second mounting ring 40 is continuously controlled to descend to avoid movement interference between the grasping assembly 24 and the displacement assembly 23 when the tool handle or the head is subsequently controlled to rotate.

[0044] Furthermore, as Figure 4 、 Figure 5 shown, the displacement assembly 23 includes a rack arranged at the bottom of the upper slide rail 22. A U-shaped frame 230 is slidably installed at the bottom of the upper slide rail 22. The U-shaped frame 230 is slidably installed with the upper slide rail 22 through a clamping slider 231. A first mating gear 232 is rotatably installed between the U-shaped frames 230. The first mating gear 232 meshes with the rack. The first mating gear 232 is connected to a first motor 233. The electromagnetic adsorption block 248 is adsorbed and connected to the bottom of the U-shaped frame 230.

[0045] Furthermore, as Figure 6 、 Figure 8As shown, an annular slot 32 is provided inside the mounting ring 31. The adsorption slider 33 is slidably mounted between the annular slot 32. An annular slot 43 is provided inside the mounting ring 40. The adsorption slider 44 is slidably mounted between the annular slot 43. Docking holes 242 are provided on the sides of the clamping plate 240 and the clamping plate 241. The docking block 36 and the docking block 49 are respectively docked and matched with the docking holes 242 in the corresponding moving and grasping mechanism 2.

[0046] Specifically, the adsorption slider 33 and the adsorption slider 44 are respectively made of magnetic materials. When slidably mounted between the annular slot 32 and the annular slot 43, they will stay in the annular slot 32 or the annular slot 43 if not driven by an external force.

[0047] Further, as Figure 6 、 Figure 8 shown, lifting blocks 30 are installed on both sides of the moving frame 20 connected to the tool holder fixing mechanism 3 in a lifting manner. An L-shaped frame 300 is provided on the lifting block 30. The end of the L-shaped frame 300 is fixedly connected to the outside of the mounting ring 31; lifting blocks 41 are installed on both sides of the moving frame 20 connected to the head fixing mechanism 4 in a lifting manner. An L-shaped frame 42 is provided on the lifting block 41. The end of the L-shaped frame 42 is fixedly connected to the outside of the mounting ring 40.

[0048] Further, as Figure 9 shown, the welding assembly 5 includes a fixedly installed lifting motor 50, which is vertically installed. The lifting motor 50 is connected to a ball joint 51. The rotating part of the ball joint 51 is connected to a welding head 53. Two sets of limiting disks 54 are provided on the welding head 53. A sliding sleeve 55 is sleeved between the two sets of limiting disks 54. A pneumatic telescopic rod 52 is rotatably connected between the sliding sleeve 55 and the fixed part of the ball joint 51. Three sets of pneumatic telescopic rods 52 are provided.

[0049] Specifically, the angle of the end welding head 53 is adjusted through the ball joint 51 and the pneumatic telescopic column 45 to meet the welding requirements at different angles.

[0050] Further, as Figure 10As shown, a traveling assembly 6 is further provided between the mobile grasping mechanism 2 and the adjustment groove 10. The traveling assembly 6 includes a connecting frame 60 disposed between the first mobile frame 20 and the second mobile frame 21. A mounting plate 61 is vertically disposed on the connecting frame 60. Traveling wheels 65 are rotatably mounted at both ends of the mounting plate 61. The traveling wheels 65 are in contact installation with the side wall of the adjustment groove 10. A third motor 62 is fixedly disposed on the connecting frame 60. A driving gear 63 and a driven gear 64 that mesh with each other are rotatably mounted at the bottom of the connecting frame 60. The third motor 62 is connected to the driving gear 63. The driving gear 63 is in transmission installation with the traveling wheel 65 at the end through a first belt 66. The driven gear 64 is in transmission installation with the traveling wheel 65 at the end through a second belt 67.

[0051] Specifically, the traveling assembly 6 drives the mobile grasping mechanism 2 to move, so as to approach the first conveyor belt 11 or the second conveyor belt 12 to grasp the tool handle or the head. After the grasping is completed, the mobile grasping mechanisms 2 on both sides are driven to quickly approach, realizing the mutual docking between the tool handle fixing mechanism 3 and the head fixing mechanism 4, and quickly completing the docking and rotational drive of the tool handle and the head, thereby improving the welding efficiency.

[0052] Furthermore, as Figure 6 、 Figure 8 shown, a positioning transmitter 37 is disposed at the top of the first mounting ring 31, and a positioning receiver 46 is correspondingly disposed at the top of the second mounting ring 40.

[0053] Specifically, the positioning transmitter 37 and the positioning receiver 46 are used to quickly align the first mounting ring 31 and the second mounting ring 40, thereby improving the docking efficiency between the tool handle and the head and further increasing the welding speed.

[0054] The working principle of the embodiment of the present invention is:

[0055] As Figures 1 - 10As shown in the figure, a conveyor belt 11 and a conveyor belt 12 are respectively arranged at both ends of the rack 1. The conveyor belt 11 is used to convey the tool shank and receive the integrated tool shank and head after welding, and the conveyor belt 12 is used to convey the head. After a set of mobile grasping mechanisms 2 grasp the tool shank, they carry the tool shank to the position of the first mounting ring 31, and then control the tool shank fixing mechanism 3 to receive the tool shank and fix the tool shank in the first mounting ring 31. After controlling another set of mobile grasping mechanisms 2 to grasp the head, they carry the head to the position of the second mounting ring 40, and then control the head fixing mechanism 4 to receive the head. After the tool shank and the head are docked with each other, the telescopic column 45 is used to dock the adsorption slider 33 and the adsorption slider 44. When controlling the rotation of the first mounting ring 31, it will synchronously drive the rotation of the second mounting ring 40. The welding assembly 5 is combined to continuously weld the docking part of the tool shank and the head until the welding is completed, avoiding the interruption of welding due to secondary fixing between the tool shank and the head. It should be noted that in order to achieve continuous welding, when the welding assembly 5 approaches one of the telescopic columns 45, this set of telescopic columns 45 retracts to avoid causing movement interference to the welding assembly 5, while the other set of telescopic columns 45 remains docked, so as to realize the synchronous rotation between the first mounting ring 31 and the second mounting ring 40, and make the tool shank and the head rotate synchronously. The motor 2 drives the mating gear 2 to mesh with the external gear ring 38. At this time, it drives the adsorption slider 33 connected to the bending frame 39. Since the other symmetrically arranged adsorption slider 44 is docked with the mobile grasping mechanism 2 through the docking block 36, it will drive the tool shank to rotate around the central axis of the first mounting ring 31. The adsorption slider 44 carrying the head is docked with the adsorption slider 33 through the telescopic column 45. When the adsorption slider 33 rotates along the inner side of the first mounting ring 31, it will synchronously drive the head to rotate along the inner side of the second mounting ring 40, so as to realize the rotation of the tool shank and the head on the central axis between the first mounting ring 31 and the second mounting ring 40, and cooperate with the welding assembly 5 for welding. Through the first moving frame 20 and the upper slide rail 22 of the moving frame installation, the shifting assembly 23 drives the grasping assembly 24 to approach the conveyor belt 11 or the conveyor belt 12. When the grasping assembly 24 reaches the specified position, the clamping plate 240 and the clamping plate 241 are controlled to gather by the telescopic cylinder 245, so as to grasp the tool shank or the head on the conveyor belt 11 or the conveyor belt 12. After grasping the tool shank or the head, it returns along the original path. Then, the tool shank fixing mechanism 3 or the head fixing mechanism 4 is controlled to rise, so that the docking block 36 or the docking block 49 is docked with the grasping assembly 24, and at the same time, the connection of the electromagnetic adsorption block 248 is disconnected, and the grasping assembly 24 and the tool shank or the head are transferred into the first mounting ring 31 or the second mounting ring 40. Then, continue to control the first mounting ring 31 or the second mounting ring 40 to descend to avoid movement interference between the grasping assembly 24 and the shifting assembly 23 when controlling the rotation of the tool shank or the head later.

[0056] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention. Any reference signs in the claims shall not be construed as limiting the claim concerned.

[0057] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automatic welding device for a tool head of a numerical control machine tool, comprising a machine frame (1) and an adjustment groove (10) in the middle of the machine frame (1), characterized in that, At both ends of the frame (1), a first conveyor belt (11) and a second conveyor belt (12) are provided. Two groups of moving grasping mechanisms (2) are slidably installed in the adjustment groove (10). One group of moving grasping mechanisms (2) is connected to a tool holder fixing mechanism (3), and the other group of moving grasping mechanisms (2) is connected to a head fixing mechanism (4). A welding assembly (5) is provided in the middle of the frame (1). The tool holder fixing mechanism (3) includes a first mounting ring (31) installed in a lifting manner. On the inner side of the first mounting ring (31), adsorption sliders one (33) are symmetrically slidably installed along the diameter direction. The adsorption sliders one (33) are installed with connecting curved rods one (34), telescopic cylinders two (35), and docking blocks one (36). The docking blocks one (36) are docked with the moving grasping mechanism (2) that grasps the tool holder. The head fixing mechanism (4) includes a second mounting ring (40) installed in a lifting manner. On the inner side of the second mounting ring (40), adsorption sliders two (44) are symmetrically slidably installed along the diameter direction. The adsorption sliders two (44) are installed with connecting curved rods two (47), telescopic cylinders three (48), and docking blocks two (49). The docking blocks two (49) are docked with the moving grasping mechanism (2) that grasps the head. A telescopic column (45) is fixedly provided on the adsorption slider two (44), and a plugging hole (330) is provided on the adsorption slider one (33). The telescopic column (45) and the plugging hole (330) are matched with each other.

2. The automatic welding equipment for the tool head of a numerically controlled machine tool according to claim 1, characterized in that, The tool holder fixing mechanism (3) further includes an external gear ring (38) provided on the outer side of the first mounting ring (31). A bending frame (39) is fixedly connected to one of the adsorption sliders one (33). A mating gear two (310) is connected to the bending frame (39). The mating gear two (310) meshes with the external gear ring (38), and the mating gear two (310) is connected to a motor two (311).

3. An automatic welding device for the tool bit of a numerically controlled machine tool according to claim 1, characterized in that, When the tool holder fixing mechanism (3) is docked with the corresponding moving grasping mechanism (2), the central axis of the tool holder welding part coincides with the central axis of the first mounting ring (31). When the head fixing mechanism (4) is docked with the corresponding moving grasping mechanism (2), the central axis of the head welding part coincides with the central axis of the second mounting ring (40).

4. An automatic welding device for a tool head used in a numerical control machine tool according to claim 1, characterized in that, The mobile grasping mechanism (2) includes a first mobile frame (20) and a second mobile frame (21). The first mobile frame (20) and the second mobile frame (21) are slidably clamped with the adjustment groove (10). An upper slide rail (22) is fixedly installed on the tops of the first mobile frame (20) and the second mobile frame (21). A displacement component (23) is installed on the upper slide rail (22). The displacement component (23) is connected to a grasping component (24). The grasping component (24) includes a first clamping plate (240) and a second clamping plate (241). The second clamping plate (241) is movably connected to the first clamping plate (240) through a plugging column (243). A first telescopic cylinder (245) is arranged between the first clamping plate (240) and the second clamping plate (241). Installation slide plates (246) are arranged on both sides of the first clamping plate (240) and the second clamping plate (241). A suspension frame (247) is arranged between the installation slide plates (246). An electromagnetic adsorption block (248) is arranged on the top of the suspension frame (247). The electromagnetic adsorption block (248) is interconnected with the displacement component (23).

5. An automatic welding device for a tool head used in a numerical control machine tool according to claim 4, characterized in that, The displacement component (23) includes a rack arranged at the bottom of the upper slide rail (22). A U-shaped frame (230) is slidably installed at the bottom of the upper slide rail (22). The U-shaped frame (230) is slidably installed with the upper slide rail (22) through a clamping slider (231). A first mating gear (232) is rotatably installed between the U-shaped frames (230). The first mating gear (232) meshes with the rack. The first mating gear (232) is connected to a first motor (233). The electromagnetic adsorption block (248) is adhesively connected to the bottom of the U-shaped frame (230).

6. The automatic welding equipment for the tool bit of a numerical control machine tool according to claim 5, characterized in that, An annular clamping groove one (32) is arranged inside the first installation ring (31). The adsorption slider one (33) is slidably installed with the annular clamping groove one (32). An annular clamping groove two (43) is arranged inside the second installation ring (40). The adsorption slider two (44) is slidably installed with the annular clamping groove two (43). Docking holes (242) are arranged on the sides of the first clamping plate (240) and the second clamping plate (241). The first docking block (36) and the second docking block (49) are respectively docked and matched with the docking holes (242) in the corresponding mobile grasping mechanism (2).

7. An automatic welding device for a tool bit used in a numerical control machine tool according to claim 4, characterized in that, Lifting blocks one (30) are installed on both sides of the first mobile frame (20) connected to the tool holder fixing mechanism (3) in a lifting manner. An L-shaped frame one (300) is arranged on the lifting block one (30). The end of the L-shaped frame one (300) is fixedly connected to the outside of the first installation ring (31); Lifting blocks two (41) are installed on both sides of the first mobile frame (20) connected to the head fixing mechanism (4) in a lifting manner. An L-shaped frame two (42) is arranged on the lifting block two (41). The end of the L-shaped frame two (42) is fixedly connected to the outside of the second installation ring (40).

8. An automatic welding device for a tool head used in a numerical control machine tool according to claim 1, characterized in that, The welding assembly (5) includes a fixedly installed lifting motor (50), the lifting motor (50) is vertically installed, the lifting motor (50) is connected with a ball hinge (51), the rotating part of the ball hinge (51) is connected with a welding head (53), two groups of limit discs (54) are arranged on the welding head (53), a sliding sleeve (55) is sleeved between the two groups of limit discs (54), and a pneumatic telescopic rod (52) is rotatably connected between the sliding sleeve (55) and the fixed part of the ball hinge (51), and three groups of pneumatic telescopic rods (52) are arranged.

9. An automatic welding device for a tool head used in a numerical control machine tool according to claim 1, characterized in that, A walking assembly (6) is further arranged between the moving and grasping mechanism (2) and the adjustment groove (10). The walking assembly (6) includes a connecting frame (60) arranged between the first moving frame (20) and the second moving frame (21). A mounting plate (61) is vertically arranged on the connecting frame (60). Walking wheels (65) are rotatably installed at both ends of the mounting plate (61). The walking wheels (65) are in contact installation with the side wall of the adjustment groove (10). A third motor (62) is fixedly arranged on the connecting frame (60). A driving gear (63) and a driven gear (64) which are meshed with each other are rotatably installed at the bottom of the connecting frame (60). The third motor (62) is connected with the driving gear (63). The driving gear (63) is installed in transmission with the walking wheel (65) at the end through a first belt (66). The driven gear (64) is installed in transmission with the walking wheel (65) at the end through a second belt (67).

10. The automatic welding equipment for the tool head of a numerically controlled machine tool according to claim 1, characterized in that, A positioning transmitter (37) is arranged at the top of the first mounting ring (31), and a positioning receiver (46) is correspondingly arranged at the top of the second mounting ring (40).

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