A rapid prototyping precision mold manufacturing welding device

Abstract

The present invention discloses a rapid prototyping precision mold manufacturing welding device in the field of mold welding technology, aiming to solve the problems of low positioning efficiency, poor adaptability, reduced precision and unstable quality caused by the separation of welding and grinding in traditional mold manufacturing welding devices. The device includes a workbench, a quick fixing mechanism and a welding and grinding mechanism; a load-bearing frame and a controller are arranged on the top of the workbench; the quick fixing mechanism contains a control turntable, a clamping part, a control part and a driving part, through which the clamping part can be synchronously approached or moved away, adapting to molds of different sizes and improving positioning accuracy and efficiency; the welding and grinding mechanism integrates welding parts and grinding parts, which run synchronously and are located on the same horizontal plane, reducing transportation time and cost, avoiding secondary clamping errors, and improving welding and grinding quality. In addition, the device also has the advantages of stable load-bearing, smooth operation, convenient operation, and a high degree of automation, which can effectively improve the production efficiency and product quality of precision mold manufacturing.

Description

Technical Field

[0001] The invention relates to the technical field of mold welding, in particular to a rapid prototyping precision mold manufacturing welding device. Background Art

[0002] In modern manufacturing, mold manufacturing is one of the key links, and welding, as an important processing technology in mold manufacturing, its technological development is crucial to improving mold quality and production efficiency.

[0003] At present, there are many problems in the practical application of traditional mold manufacturing welding devices. Especially for molds with circular or square processing surfaces, in terms of positioning, most existing devices place the mold in a specific groove and then fix it manually. This method is inefficient and has poor adaptability to molds of different cross-sectional sizes, making it difficult to meet the needs of rapid prototyping precision mold manufacturing. For example, when it is necessary to process circular or square molds of different sizes, frequent replacement of fixed grooves or manual adjustment of clamping positions will consume a lot of time and reduce production efficiency. At the same time, it is also easy to cause insufficient positioning accuracy due to human factors, affecting the final quality of the mold.

[0004] And in terms of welding and subsequent processing, traditional devices usually treat welding and grinding as two independent processes, which need to be carried out on different equipment or different workstations. This not only increases the transportation time and cost of the mold, but may also cause the positioning accuracy of the mold to decrease due to secondary clamping. In addition, the parameter adjustment during the welding process often relies on manual experience, and it is difficult to achieve precise control based on the specific material, thickness and other factors of the mold, which can easily cause problems such as welding deformation and unstable weld quality. For the grinding process after welding, there are also problems such as low grinding accuracy and inconsistent surface finish, which affect the overall performance and service life of the mold.

[0005] In response to the above problems, this application document provides a rapid prototyping precision mold manufacturing welding device. Summary of the invention

[0006] The purpose of the present invention is to solve the problems raised in the above background technology, and provide a rapid prototyping precision mold manufacturing welding device.

[0007] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions: A rapid prototyping precision mold manufacturing welding device, comprising a workbench, a rapid fixing mechanism and a welding and grinding mechanism, wherein: A load-bearing frame is fixed on the top of the workbench, and a controller is arranged on the workbench; The quick fixing mechanism comprises a control turntable horizontally mounted on the top of the workbench, four clamping members arranged in a rotating array are slidably mounted on the control turntable, a control member is also provided on the control turntable, and the four clamping members can be controlled to approach or move away synchronously by the control member, and a driving member for controlling the rotation of the control turntable is provided at the bottom of the workbench; The welding and grinding mechanism is installed on the top of the supporting frame and is located directly above the control turntable. The welding and grinding mechanism includes a welding part and a grinding part. The welding part and the grinding part are symmetrically distributed. The welding part is used for welding the mold, and the grinding part is used for grinding the welding part of the mold.

[0008] Furthermore, the horizontal cross-section of the control turntable is circular, and an annular mounting groove is constructed on the outer peripheral side of the control turntable. The top of the control turntable is constructed with four T-shaped slide grooves connected to the mounting grooves, and the intersection of the four T-shaped slide grooves is located on the central axis of the control turntable. The four clamping members correspond to the four T-shaped slide grooves respectively, and the clamping members include T-shaped sliders slidably installed in the corresponding T-shaped slide grooves, a mounting plate is fixed to the top of one end of the T-shaped slider, a mounting rod is installed on one side of the mounting plate, and a clamping block is fixed on the end of the mounting rod facing the central axis of the control turntable, and the four clamping blocks are used to clamp and fix the mold.

[0009] Furthermore, the control component includes a ring gear rotatably mounted on the bottom wall of the mounting groove, meshing teeth are constructed on the inner wall of the ring gear, four control gears are rotatably mounted between the two inner walls of the mounting groove that are opposite to each other, the four control gears are all meshed with the ring gear, the four control gears respectively correspond to the four T-shaped sliders, a rack fixed to the bottom of the T-shaped slider is movably arranged inside the mounting groove, the rack is arranged along the length direction of the T-shaped slider, the four racks are respectively meshed with the four control gears, the control component also includes a servo motor 1 vertically fixed to the bottom of the control turntable, the output end of the servo motor 1 movably passes through the interior of the mounting groove and is fixed with a driving gear meshed with the ring gear, and the servo motor 1 is electrically connected to the controller.

[0010] Furthermore, a docking plate is fixed on the top of the T-shaped slider, the mounting rod movably passes through the mounting plate, a pressure sensor corresponding to an end of the mounting rod facing away from the clamping block is installed on one side of the docking plate, the pressure sensor is electrically connected to the controller, and a spring movably mounted on the mounting rod is connected between the clamping block and the mounting plate.

[0011] Furthermore, a driving rod is fixed in the middle of the bottom side of the control turntable, and the driving rod is rotatably mounted on the top of the workbench and the bottom end passes through the workbench, and the driving component includes a servo motor 2 installed on the workbench, a driving wheel is fixedly sleeved on the output shaft of the servo motor 2, and a driven wheel is fixedly sleeved on the driving rod, an integral connecting belt is sleeved between the driving wheel and the driven wheel, the diameter of the driven wheel is much larger than the diameter of the driving wheel, and the servo motor 2 is electrically connected to the controller.

[0012] Furthermore, a plurality of vertical bearing rods are fixed to the bottom side of the control turntable and are distributed in a rotation array about the central axis of the control turntable, and the bottom ends of the bearing rods are connected to balls that roll on the top of the workbench.

[0013] Furthermore, the welding part includes a bearing block installed at the bottom of the bearing frame, and a vertical electric push rod 1 electrically connected to the controller is installed at the bottom of the bearing block, and the output end of the electric push rod 1 is downward and installed with a welding gun.

[0014] Furthermore, the grinding part includes a connecting block installed on the top of the supporting frame, and a vertical electric push rod 2 electrically connected to the controller is installed at the bottom of the connecting block. The output end of the electric push rod 2 is downward and a servo motor 3 electrically connected to the controller is installed thereon, and the output end of the servo motor 3 is vertically downward and a grinding disc is fixed thereon.

[0015] Furthermore, a horizontal bidirectional screw is rotatably installed at the bottom of the supporting frame, the supporting block and the connecting block are respectively threadedly mounted on the positive thread and negative thread of the bidirectional screw, and a servo motor four is installed on the supporting frame, the output end of which is fixed to one end of the bidirectional screw, and the servo motor four is electrically connected to the controller.

[0016] Furthermore, the electric push rod 1 and the electric push rod 2 operate synchronously and the welding gun head and the grinding disc are located on the same horizontal plane.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. This solution can clamp and fix molds with different cross-sectional shapes such as round and square by controlling the four clamps installed on the turntable. The control part can control the four clamps to move closer or farther away synchronously. There is no need to frequently replace the fixing groove or manually adjust the clamping position. Molds of different sizes can be quickly positioned, which greatly improves the adaptability to molds of different specifications and meets the needs of rapid prototyping precision mold manufacturing.

[0018] 2. The clamping block in the clamping part of the present invention can accurately clamp the mold, and the control part adopts a servo motor to drive the ring gear, which in turn drives the control gear to cooperate with the rack to achieve precise movement of the clamping part, avoiding the problem of insufficient positioning accuracy caused by human factors in traditional manual operations, ensuring the accurate position of the mold during the welding process, thereby improving the final quality of the mold.

[0019] 3. The welding and grinding mechanism in the present invention integrates the welding parts and the grinding parts on the same device, which is located directly above the control turntable. After welding, the mold does not need to be transferred to other equipment or workstations for grinding, and subsequent processing can be carried out directly at the same location, effectively reducing the transportation time and cost of the mold. Since the welding and grinding processes are carried out continuously on the same device, the problem of decreased mold positioning accuracy caused by secondary clamping in traditional devices is avoided, thereby ensuring the accuracy consistency of the mold throughout the entire manufacturing process and further improving the overall performance of the mold.

[0020] 4. The pressure sensor in the present invention monitors the clamping pressure of the clamp block on the mold in real time. The pressure sensor is electrically connected to the controller. When the pressure is abnormal, the controller can adjust the operation of the servo motor in time to adjust the clamping force, which not only ensures that the mold is firmly clamped, but also avoids damage to the mold due to excessive clamping force, thereby ensuring the stability and safety of the mold during the processing.

[0021] 5. The bearing rod and ball arranged on the bottom side of the control turntable provide good support and stability when the control turntable rotates, reducing the shaking of the control turntable during rotation, ensuring the stability of the entire device operation, and thus improving the accuracy of mold processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 For the present invention Figure 1 A three-dimensional cross-sectional view of Figure 3 For the present invention Figure 2 A magnified view of the structure in center A; Figure 4 It is a three-dimensional structural schematic diagram of another state of the present invention; Figure 5 For the present invention Figure 4 Schematic diagram of the three-dimensional structure of the middle part; Figure 6 For the present invention Figure 5 A three-dimensional cross-sectional view of Figure 7 For the present invention Figure 5 A three-dimensional cross-sectional view from another direction; Figure 8 For the present invention Figure 5Schematic diagram of the three-dimensional structure of the middle part.

[0023] In the figure: 1, workbench; 11, carrier frame; 111, bidirectional screw rod; 112, servo motor four; 2, quick fixing mechanism; 21, control turntable; 211, mounting groove; 212, T-shaped slide groove; 213, driving rod; 214, bearing rod; 215, rolling ball; 22, clamping part; 221, T-shaped slide block; 222, mounting plate; 223, mounting rod; 224, clamping block; 225, docking plate; 226, pressure sensor; 227, spring; 23, control part; 23 1. Ring gear; 232. Control gear; 233. Rack; 234. Servo motor 1; 235. Driving gear; 24. Driving member; 241. Servo motor 2; 242. Driving wheel; 243. Driven wheel; 244. Linking belt; 3. Welding and grinding mechanism; 31. Welding member; 311. Carrying block; 312. Electric push rod 1; 313. Welding gun; 32. Grinding member; 321. Connecting block; 322. Electric push rod 2; 323. Servo motor 3; 324. Grinding disc. DETAILED DESCRIPTION

[0024] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0025] The present embodiment provides a rapid prototyping precision mold manufacturing welding device, which is mainly used to solve many problems existing in the actual application of the conventional mold manufacturing welding device. In particular, for molds with circular or square processing surfaces, in terms of positioning, most existing devices place the mold in a specific groove and then fix and clamp it manually. This method is inefficient and has poor adaptability to molds of different cross-sectional sizes, making it difficult to meet the needs of rapid prototyping precision mold manufacturing. For example, when it is necessary to process round or square molds of different sizes, frequent replacement of the fixing groove or manual adjustment of the clamping position will consume a lot of time and reduce production efficiency. At the same time, it is also easy to cause insufficient positioning accuracy due to human factors, affecting the final quality of the mold. In terms of welding and subsequent processing, traditional devices usually treat welding and grinding as two independent processes, which need to be performed on different equipment or different workstations. This not only increases the transportation time and cost of the mold, but may also cause the positioning accuracy of the mold to decrease due to secondary clamping. Moreover, parameter adjustment in the welding process often relies on manual experience, and it is difficult to achieve precise control based on the specific material, thickness and other factors of the mold. It is easy to cause welding deformation, unstable weld quality and other problems. For the grinding process after welding, there are also problems such as low grinding accuracy and inconsistent surface finish, which affect the overall performance and service life of the mold, and provide the following technical solutions. Figure 1 - Figure 8Make a detailed description: Embodiment 1: A rapid prototyping precision mold manufacturing welding device comprises a workbench 1, a rapid fixing mechanism 2 and a welding and polishing mechanism 3, wherein: A carrier frame 11 is fixed on the top of the workbench 1. The workbench 1 serves as the basic supporting structure of the entire device. A controller is provided on the workbench 1 for uniformly controlling the operation of various components. In this embodiment, the model of the controller is a DA180 servo control system. The quick fixing mechanism 2 includes a control turntable 21 which is horizontally rotatably mounted on the top of the workbench 1. Four clamping members 22 which are arranged in a rotating array are slidably mounted on the control turntable 21. A control member 23 is also provided on the control turntable 21. The four clamping members 22 can be controlled to approach or move away synchronously through the control member 23, thereby realizing the quick positioning and fixing of circular or square molds of different sizes. A driving member 24 for controlling the rotation of the control turntable 21 is provided at the bottom of the workbench 1. The welding and grinding mechanism 3 is installed on the top of the carrier 11 and is located directly above the control turntable 21. The welding and grinding mechanism 3 includes a welding part 31 and a grinding part 32. The welding part 31 and the grinding part 32 are symmetrically distributed. The welding part 31 is used for welding the mold, and the grinding part 32 is used for grinding the welding part of the mold.

[0026] The unique design of the quick fixing mechanism 2 greatly improves the efficiency and accuracy of mold positioning and fixing, effectively avoiding the inefficiency and errors of traditional manual operation. The integrated design of the welding and grinding mechanism 3 reduces the trouble of mold transportation and secondary clamping, and reduces the risk of reduced positioning accuracy.

[0027] For details, please refer to Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The horizontal cross section of the control turntable 21 is circular, and an annular mounting groove 211 is constructed on the outer peripheral side of the control turntable 21. The mounting groove 211 provides an installation space for the subsequent transmission structure. The top of the control turntable 21 is constructed with four T-shaped slide grooves 212 connected to the mounting grooves 211. The intersection of the extended lines of the four T-shaped slide grooves 212 is located on the central axis of the control turntable 21. This layout design ensures that the mold is evenly stressed and accurately positioned when positioned and fixed; The four clamping members 22 correspond to the four T-shaped slide grooves 212 respectively. The clamping member 22 includes a T-shaped slider 221 slidably mounted inside the corresponding T-shaped slide groove 212. The cooperation between the T-shaped slider 221 and the T-shaped slide groove 212 ensures that the clamping member 22 can slide smoothly on the control turntable 21 and prevents it from shaking unnecessarily during operation. A mounting plate 222 is fixed to the top of one end of the T-shaped slider 221. A mounting rod 223 is mounted on one side of the mounting plate 222. A clamping block 224 is fixed to one end of the mounting rod 223 facing the central axis of the control turntable 21. The four clamping blocks 224 are used to clamp and fix the mold. In actual operation, when the controller starts the control part 23, the transmission structure in the mounting groove 211 drives the T-shaped slider 221 to slide in the T-shaped slide groove 212, thereby pushing the mounting plate 222, the mounting rod 223 and the clamping block 224 to make corresponding position changes. The four clamping blocks 224 move closer or farther away synchronously, and can quickly adapt to round or square molds of different sizes to complete the positioning and fixing operations of the mold.

[0028] For further information, see Figure 2 - Figure 8 The control member 23 includes a ring gear 231 rotatably mounted on the bottom wall of the mounting groove 211, and meshing teeth are constructed on the inner wall of the ring gear 231. Four control gears 232 are rotatably mounted between the two inner walls of the mounting groove 211 that are opposite to each other. The four control gears 232 are all meshed with the ring gear 231 to form a stable transmission relationship. The four control gears 232 correspond to the four T-shaped sliders 221 respectively. A rack 233 fixed to the bottom of the T-shaped slider 221 is movably arranged inside the mounting groove 211. The rack 233 is arranged along the length direction of the T-shaped slider 221. The four racks 233 are respectively meshed with the four control gears 232. The control member 23 also includes a servo motor 234 vertically fixed to the bottom of the control turntable 21. The output end of the servo motor 234 movably penetrates the interior of the mounting groove 211 and is fixed with a driving gear 235 meshed with the ring gear 231. The servo motor 234 is electrically connected to the controller. In actual operation, when the controller issues an instruction according to the size and positioning requirements of the mold, the servo motor 234 electrically connected to the controller starts to operate, and the output end of the servo motor 234 drives the driving gear 235 to rotate, and the driving gear 235 then drives the ring gear 231 meshing therewith to perform circular motion. Since the four control gears 232 are all meshed with the ring gear 231, the rotation of the ring gear 231 will drive the four control gears 232 to rotate synchronously. Since the control gear 232 is meshed with the rack 233 fixed at the bottom of the T-shaped slider 221, the rotation of the control gear 232 will push the rack 233, thereby driving the T-shaped slider 221 to slide in the T-shaped slide groove 212. In this way, the mounting plate 222, the mounting rod 223 and the clamping block 224 connected to the T-shaped slider 221 will change their positions accordingly, so that the four clamping blocks 224 can be approached or moved away synchronously, thereby completing the precise positioning and firm fixation of circular or square molds of different sizes.

[0029] It should be noted that a driving rod 213 is fixed to the middle of the bottom side of the control turntable 21, and the driving rod 213 is rotatably mounted on the top of the workbench 1 and the bottom end thereof passes through the workbench 1. The driving member 24 includes a servo motor 241 mounted on the workbench 1. A driving wheel 242 is fixedly sleeved on the output shaft of the servo motor 241, and a driven wheel 243 is fixedly sleeved on the driving rod 213. An integral linking belt 244 is sleeved between the driving wheel 242 and the driven wheel 243. The diameter of the driven wheel 243 is much larger than that of the driving wheel 242. The servo motor 241 is electrically connected to the controller. The advantage of this is that the servo motor 241 can more accurately drive the control turntable 21 to rotate, thereby realizing accurate welding of the mold. In actual operation, when the controller issues an instruction to drive the control turntable 21 to rotate according to the processing requirements of the mold, the servo motor 241 electrically connected to the controller starts working, and the output shaft of the servo motor 241 drives the driving wheel 242 to rotate, and the driving wheel 242 transmits power to the driven wheel 243 through the connecting belt 244. Since the diameter of the driven wheel 243 is much larger than the driving wheel 242, according to the gear transmission principle, the driven wheel 243 will rotate at a relatively slow speed, thereby driving the driving rod 213 fixed thereto to rotate slowly and smoothly. The rotation of the driving rod 213 then drives the control turntable 21 to achieve smooth and precise rotation, so that the mold placed on the control turntable 21 can be welded more accurately.

[0030] In this example, see Figure 2 and Figure 4The welding member 31 includes a bearing block 311 installed at the bottom of the bearing frame 11, and a vertical electric push rod 1 312 electrically connected to the controller is installed at the bottom of the bearing block 311. The output end of the electric push rod 1 312 is downward and is installed with a welding gun 313. In this embodiment, the model of the welding gun 313 is H01-6; When the controller issues a welding operation instruction according to the welding process requirements of the mold, the electric push rod 312 electrically connected to the controller starts working. The electric push rod 312 accurately controls its own telescopic movement according to the signal sent by the controller, and its output end drives the welding gun 313 to accurately adjust its position along the vertical direction. When the mold needs to be welded, the electric push rod 312 pushes the welding gun 313 down to a suitable welding position, and then the welding gun 313 starts the welding operation according to the preset welding parameters. After the welding is completed, the electric push rod 312 lifts the welding gun 313 to the initial position to prepare for other subsequent operations or the next welding task.

[0031] The grinding piece 32 includes a connection block 321 installed on the top of the carrier 11, and a vertical electric push rod 2 322 electrically connected to the controller is installed at the bottom of the connection block 321. The output end of the electric push rod 2 322 is downward and a servo motor 3 323 electrically connected to the controller is installed. The output end of the servo motor 3 323 is vertically downward and a grinding disc 324 is fixed. When the welding process is completed, the controller sends instructions to the electric push rod 2 322 and the servo motor 3 323 according to the preset process flow. The electric push rod 2 322 accurately controls its own telescopic action according to the signal of the controller, and drives the servo motor 3 323 and the grinding disc 324 to descend to the appropriate height of the mold welding. At this time, the servo motor 3 323 starts, driving the grinding disc 324 to rotate at high speed.

[0032] When it comes to molds of different sizes, a horizontal bidirectional screw 111 is rotatably installed at the bottom of the carrier 11, and the carrier block 311 and the connecting block 321 are respectively threadedly sleeved on the positive thread and the negative thread of the bidirectional screw 111. A servo motor 112 with an output end fixed to one end of the bidirectional screw 111 is installed on the carrier 11. The servo motor 112 is electrically connected to the controller, and the controller sends a command to the servo motor 112, and the servo motor 112 drives the bidirectional screw 111 to rotate. Since the carrier block 311 and the connecting block 321 are respectively threadedly sleeved on the positive and negative threads of the bidirectional screw 111, the rotation of the bidirectional screw 111 will cause the carrier block 311 and the connecting block 321 to move toward or away from each other, thereby realizing the synchronous adjustment of the lateral positions of the welding part 31 and the grinding part 32 to adapt to molds of different sizes. The grinding piece 32 and related structural designs have many significant beneficial effects. Through the combination of the connecting block 321, the electric push rod 2 322, the servo motor 323 and the grinding disc 324, precise control of the grinding operation is achieved. The electric push rod 2 322 and the servo motor 323 are electrically connected to the controller, so that the lifting and rotating speed of the grinding disc 324 can be automated and precisely operated according to the actual situation of the mold. Compared with the traditional grinding method, this can quickly and accurately grind the welding seam, thereby improving the grinding efficiency and quality. The design of the bidirectional screw 111 and the servo motor 4 112 allows the lateral positions of the welding piece 31 and the grinding piece 32 to be flexibly adjusted, thereby enhancing the adaptability of the device to molds of different sizes.

[0033] The electric push rod 1 312 and the electric push rod 2 322 operate synchronously, and the gun head of the welding gun 313 and the grinding disk 324 are located at the same horizontal plane. The synchronous operation of the electric push rod 1 312 and the electric push rod 2 322 and the welding gun 313 and the grinding disk 324 are kept at the same level, which ensures the seamless connection of the welding and grinding processes, reduces the time loss in the mold processing process, and further improves the overall production efficiency of the mold manufacturing.

[0034] Embodiment 2: Example 2 is a further optimization of Example 1. Figure 3 - Figure 8 A docking plate 225 is fixed on the top of the T-shaped slider 221, and the mounting rod 223 movably penetrates the mounting plate 222. A pressure sensor 226 corresponding to the end of the mounting rod 223 facing away from the clamping block 224 is installed on one side of the docking plate 225. The pressure sensor 226 is electrically connected to the controller to ensure that the monitoring data can be fed back to the controller in real time. A spring 227 movably sleeved on the mounting rod 223 is connected between the clamping block 224 and the mounting plate 222; When the clamping member 22 clamps the mold, as the clamping block 224 gradually approaches the mold and applies a clamping force, the mounting rod 223 will move toward the docking plate 225 under the action of the clamping block 224. At this time, the end of the mounting rod 223 facing away from the clamping block 224 will squeeze the pressure sensor 226. The pressure sensor 226 monitors the pressure in real time and transmits the pressure data to the controller. The controller determines whether the current clamping force is appropriate based on the preset pressure range. If the clamping force is too large or too small, the controller will send a command to the servo motor 234 in the control member 23 to adjust the clamping force of the clamping member 22. In this process, the spring 227 plays a role in buffering and fine-tuning the clamping force. When the clamping block 224 is subjected to the reaction force of the mold, the spring 227 will be appropriately compressed or stretched to ensure the stability of the clamping force and avoid damage to the mold due to excessive instantaneous impact force.

[0035] It should be noted that, in this solution, the models of servo motor 1 234, servo motor 2 241, servo motor 3 323 and servo motor 4 112 are all Panasonic MINASA6 series, the models of electric push rod 1 312 and electric push rod 2 322 are all Holip ZTA series, and the model of pressure sensor 226 is Honeywell SS2 series.

[0036] Embodiment three: Example 3 is a further optimization of Example 1. Figure 3 and Figure 6 A plurality of vertical bearing rods 214 are fixed to the bottom side of the control turntable 21 and are distributed in a rotating array with the central axis of the control turntable 21. This distribution method ensures that the control turntable 21 is uniformly stressed in all directions. The bottom end ball of the bearing rod 214 is connected to a rolling ball 215 rolling on the top of the workbench 1. The rolling friction of the rolling ball 215 reduces the rotational resistance and energy consumption, while also reducing the wear caused by friction, thereby extending the service life of the control turntable 21 and related components.

[0037] In this scheme, the operation process of the device is as follows: First, place the mold on the control turntable 21, start the controller on the workbench 1, and the controller sends a command to the servo motor 234 in the control component 23. The servo motor 234 runs, and its output end drives the driving gear 235 to rotate. The driving gear 235 drives the ring gear 231 to make a circular motion. The ring gear 231 drives the four control gears 232 meshing with it to rotate synchronously. The control gear 232 pushes the rack 233 fixed at the bottom of the T-shaped slider 221, so that the T-shaped slider 221 slides in the T-shaped slide groove 212. The sliding of the T-shaped slider 221 drives the mounting plate 222, the mounting rod 223 and the clamping block 224 to change accordingly. The four clamping blocks 224 move closer or farther away synchronously, so as to realize the precise positioning and firm fixation of circular or square molds of different sizes on the control turntable 21. Next, according to the different sizes of molds, the controller sends a command to the servo motor 112 installed on the carrier 11, and the servo motor 112 drives the bidirectional screw 111 to rotate. Since the bearing block 311 and the connecting block 321 are respectively threadedly sleeved on the positive and negative threads of the bidirectional screw 111, the rotation of the bidirectional screw 111 causes the bearing block 311 and the connecting block 321 to move toward or away from each other, thereby realizing the synchronous adjustment of the lateral positions of the welding part 31 and the grinding part 32 to adapt to molds of different sizes; Then, the welding and grinding operation is performed. The controller issues a command to the electric push rod 1 312 in the welding part 31 according to the requirements of the mold welding process. The electric push rod 1 312 accurately controls the extension and retraction, drives the welding gun 313 to adjust the position in the vertical direction, and pushes the welding gun 313 down to a suitable welding position. The welding gun 313 starts the welding operation according to the preset welding parameters. At the same time, the controller issues a command to the electric push rod 2 322 and the servo motor 3 323 in the grinding part 32. The electric push rod 2 322 accurately controls the extension and retraction, drives the servo motor 3 323 and the grinding disc 324 to descend to a suitable height at the mold welding location. At this time, the controller sends a command to the servo motor 241 in the driving member 24, and the output shaft of the servo motor 241 drives the driving wheel 242 to rotate. The driving wheel 242 drives the driven wheel 243 to rotate slowly through the connecting belt 244. The driven wheel 243 drives the driving rod 213, and then drives the control turntable 21 to rotate smoothly and accurately, so that the mold rotates, the welding gun 313 welds accurately, and at the same time the grinding disc 324 grinds the welding point.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rapid prototyping precision mold manufacturing welding device, comprising a workbench (1), a rapid fixing mechanism (2) and a welding polishing mechanism (3), characterized in that: in: A bearing frame (11) is fixed on the top of the workbench (1), and a controller is arranged on the workbench (1); The quick fixing mechanism (2) comprises a control turntable (21) rotatably mounted on the top of the workbench (1) in a horizontal direction, four clamping members (22) arranged in a rotating array are slidably mounted on the control turntable (21), a control member (23) is further arranged on the control turntable (21), and the four clamping members (22) can be controlled to move synchronously closer or farther away from each other by means of the control member (23), and a driving member (24) for controlling the rotation of the control turntable (21) is arranged at the bottom of the workbench (1); The welding and grinding mechanism (3) is mounted on the top of the carrier (11) and is located directly above the control turntable (21). The welding and grinding mechanism (3) comprises a welding part (31) and a grinding part (32). The welding part (31) and the grinding part (32) are symmetrically distributed. The welding part (31) is used for welding the mold, and the grinding part (32) is used for grinding the welding part of the mold.

2. A rapid prototyping precision mold manufacturing welding device according to claim 1, characterized in that: The horizontal cross section of the control turntable (21) is circular. An annular mounting groove (211) is constructed on the outer peripheral side of the control turntable (21). The top of the control turntable (21) is constructed with four T-shaped slide grooves (212) connected to the mounting grooves (211). The intersection of the extension lines of the four T-shaped slide grooves (212) is located on the central axis of the control turntable (21). The four clamping members (22) respectively correspond to the four T-shaped slide grooves (212). The clamping member (22) comprises a T-shaped slider (221) slidably mounted inside the corresponding T-shaped slide grooves (212). A mounting plate (222) is fixed to the top of one end of the T-shaped slider (221). A mounting rod (223) is installed on one side of the mounting plate (222). A clamping block (224) is fixed to one end of the mounting rod (223) facing the central axis of the control turntable (21). The four clamping blocks (224) are used to clamp and fix the mold.

3. A rapid prototyping precision mold manufacturing welding device according to claim 2, characterized in that: The control member (23) comprises an annular gear (231) rotatably mounted on the bottom wall of the mounting groove (211), the inner wall of the annular gear (231) being provided with meshing teeth, four control gears (232) rotatably mounted between two inner walls of the mounting groove (211) facing each other, the four control gears (232) all meshing with the annular gear (231), the four control gears (232) respectively corresponding to the four T-shaped slide blocks (221), and a gear fixed to the bottom of the T-shaped slide block (221) is movably arranged inside the mounting groove (211). The rack (233) is arranged along the length direction of the T-shaped slider (221), and the four racks (233) are respectively meshed with the four control gears (232). The control member (23) further includes a servo motor 1 (234) vertically fixed to the bottom of the control turntable (21), and the output end of the servo motor 1 (234) movably penetrates the interior of the mounting groove (211) and is fixed with a driving gear (235) meshed with the ring gear (231), and the servo motor 1 (234) is electrically connected to the controller.

4. A rapid prototyping precision mold manufacturing welding device according to claim 2, characterized in that: A docking plate (225) is fixed on the top of the T-shaped slider (221); the mounting rod (223) movably penetrates the mounting plate (222); a pressure sensor (226) corresponding to an end of the mounting rod (223) facing away from the clamping block (224) is mounted on one side of the docking plate (225); the pressure sensor (226) is electrically connected to a controller; and a spring (227) movably sleeved on the mounting rod (223) is connected between the clamping block (224) and the mounting plate (222).

5. A rapid prototyping precision mold manufacturing welding device according to claim 2, characterized in that: A driving rod (213) is fixed in the middle of the bottom side of the control turntable (21), and the driving rod (213) is rotatably mounted on the top of the workbench (1) and the bottom end thereof passes through the workbench (1). The driving member (24) comprises a second servo motor (241) mounted on the workbench (1), a driving wheel (242) is fixedly sleeved on the output shaft of the second servo motor (241), a driven wheel (243) is fixedly sleeved on the driving rod (213), an integral connecting belt (244) is sleeved between the driving wheel (242) and the driven wheel (243), the diameter of the driven wheel (243) is much larger than the diameter of the driving wheel (242), and the second servo motor (241) is electrically connected to the controller.

6. A rapid prototyping precision mold manufacturing welding device according to claim 2, characterized in that: A plurality of vertical bearing rods (214) are fixed to the bottom side of the control turntable (21) and are distributed in a rotation array about the central axis of the control turntable (21), and the bottom ends of the bearing rods (214) are connected to rolling balls (215) that roll on the top of the workbench (1).

7. A rapid prototyping precision mold manufacturing welding device according to claim 2, characterized in that: The welding part (31) comprises a bearing block (311) mounted on the bottom of the bearing frame (11); a vertical electric push rod (312) electrically connected to a controller is mounted on the bottom of the bearing block (311); the output end of the electric push rod (312) faces downward and is mounted with a welding gun (313).

8. A rapid prototyping precision mold manufacturing welding device according to claim 7, characterized in that: The grinding member (32) comprises a connecting block (321) mounted on the top of the carrier frame (11); a second electric push rod (322) which is vertically oriented and electrically connected to a controller is mounted at the bottom of the connecting block (321); an output end of the second electric push rod (322) is downwardly directed and is mounted with a servo motor (323) which is electrically connected to the controller; and an output end of the third servo motor (323) is vertically directed downwardly and is fixed with a grinding disc (324).

9. A rapid prototyping precision mold manufacturing welding device according to claim 8, characterized in that: A horizontal bidirectional screw rod (111) is rotatably mounted at the bottom of the support frame (11); the support block (311) and the connection block (321) are respectively threadedly mounted on the positive thread and the negative thread of the bidirectional screw rod (111); a servo motor (112) having an output end fixed to one end of the bidirectional screw rod (111) is mounted on the support frame (11); and the servo motor (112) is electrically connected to a controller.

10. A rapid prototyping precision mold manufacturing welding device according to claim 9, characterized in that: The electric push rod 1 (312) and the electric push rod 2 (322) operate synchronously, and the gun head of the welding gun (313) and the grinding disc (324) are located on the same horizontal plane.

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