A positioning device applied to welding of castings

Abstract

This application relates to the field of tooling welding equipment, and in particular to a positioning device for welding castings. A first positioning mechanism, a second positioning mechanism, and a third positioning mechanism are used to position the front end, middle end, and end end of the tooling, respectively. A balance support plate is added to one side of the base plate of the third positioning mechanism. The balance support plate and the third positioning mechanism clamp and position the end end of the tooling. The bottom of the balance support plate is fixed to the base plate. A first adjusting block and a second adjusting block are respectively installed on the left and right sides of the top of the balance support plate. The first and second adjusting blocks support the bottom of the tooling. The first adjusting block, the second adjusting block, and the third positioning mechanism clamp and position the end end of the tooling. Both the first and second adjusting blocks are movably mounted on the top of the balance support plate. The purpose of this application is to avoid over-positioning of the tooling, which helps to ensure the forming quality of the tooling.

Description

Technical Field

[0001] This application relates to the field of tooling welding equipment, and in particular to a positioning device for welding castings. Background Technology

[0002] In the daily processing and production process, when welding is required, the tooling is often positioned by a matching positioning device to effectively ensure the stability of the tooling during the welding process, thereby effectively ensuring the quality and efficiency of tooling welding.

[0003] In related technologies, when positioning a tooling, the positioning device should ensure effective positioning of the tooling while avoiding over-positioning. If the positioning device over-positions the tooling, although it can ensure the positioning effect, the over-positioning will cause structural damage to the tooling, which will affect the forming quality of the tooling.

[0004] Therefore, how to achieve stable and effective positioning of the tooling during the tooling welding process without over-positioning it is an urgent problem to be solved. Summary of the Invention

[0005] This application provides a positioning device for welding castings, which aims to stabilize and effectively position the tooling while avoiding over-positioning, thereby effectively preventing structural damage to the tooling caused by over-positioning and ensuring the forming quality of the tooling.

[0006] This application provides a positioning device for welding castings, employing the following technical solution:

[0007] A positioning device for welding castings includes a base plate. The base plate is equipped with a first positioning mechanism, a second positioning mechanism, and a third positioning mechanism. These three mechanisms are used to position the front end, middle end, and end end of a tooling, respectively. A balance support plate is added to one side of the base plate near the third positioning mechanism. The balance support plate and the third positioning mechanism clamp and position the end end of the tooling. The bottom of the balance support plate is fixed to the base plate. A first adjusting block and a second adjusting block are respectively installed on the left and right sides of the top of the balance support plate. The first adjusting block and the second adjusting block support the bottom of the tooling. The first adjusting block, the second adjusting block, and the third positioning mechanism clamp and position the end end of the tooling.

[0008] Both the first adjusting block and the second adjusting block are movably mounted on the top of the balance support plate.

[0009] By adopting the above technical solution, specifically in the positioning of the tooling, the front end and middle end of the tooling are first positioned by the first and second positioning mechanisms, and then the end end of the tooling is positioned by the third positioning mechanism and the first and second adjusting blocks on the balance support plate. After the third positioning mechanism and the first and second adjusting blocks clamp the end end of the tooling, the contact degree between the first or second adjusting block and the end end of the tooling is adjusted according to the specific positioning position and positioning effect of the first and second positioning mechanisms, thereby enabling corresponding adjustment of the positioning clamping force of the third positioning mechanism and the balance support plate on the end end of the tooling.

[0010] For example, based on the positioning of the tooling by the first and second positioning mechanisms, it is necessary to adjust the clamping force of the third positioning mechanism and the balance support plate on the end of the tooling. In this state, the position of the first or second adjusting block on the balance support plate is adjusted. By adjusting the position of the first or second adjusting block on the balance support plate, the clamping force of the balance support plate and the third positioning mechanism on the end of the tooling can be adjusted.

[0011] This configuration, utilizing the first and second adjustment blocks on the balance support plate, can effectively prevent over-positioning of the tooling, thereby preventing structural damage to the tooling caused by over-positioning and ensuring the molding quality of the tooling.

[0012] Preferably, the first positioning mechanism includes a first positioning block, a first support plate, and a first driving cylinder. The first positioning block is connected to the piston rod of the first driving cylinder, and the first driving cylinder is used to drive the first positioning block to move up and down in the vertical direction.

[0013] The first support plate is fixed vertically on the base plate. Support blocks are integrally formed on the top left and right sides of the first support plate. The two support blocks are located below the tooling. The first driving cylinder drives the first positioning block to press the front end of the tooling onto the two support blocks.

[0014] By adopting the above technical solution, the front end of the tooling is clamped and positioned using the first positioning block and two support blocks.

[0015] Preferably, the second positioning mechanism includes a second positioning block, a second support plate, and a second driving cylinder. The second positioning block is connected to the piston rod of the second driving cylinder, and the second driving cylinder is used to drive the second positioning block to move up and down in the vertical direction.

[0016] The second support plate is fixed on the bottom plate in the vertical direction. A support rod is integrally formed at the top of the second support plate. The support rod is located below the tooling. The second driving cylinder drives the second positioning block to press the middle end of the tooling against the support rod.

[0017] By adopting the above technical solution, the middle end of the tooling is clamped and positioned by the second positioning block and the support rod.

[0018] Preferably, the third positioning mechanism includes a third positioning block and a third driving cylinder. The third positioning block is connected to the piston rod of the third driving cylinder. The third driving cylinder is used to drive the third positioning block to move up and down in the vertical direction.

[0019] The end of the tooling is located between the third positioning block and the balance support plate. The first adjusting block and the second adjusting block on the third positioning block and the balance support plate clamp and position the end of the tooling.

[0020] By adopting the above technical solution, the middle end of the tooling is clamped and positioned by the third positioning block, the first adjusting block and the second adjusting block.

[0021] Preferably, the third positioning block includes a connecting plate and two pressing plates. The connecting plate is connected to the piston rod of the third driving cylinder. The two pressing plates are respectively fixedly connected to the left and right sides of the bottom of the connecting plate. The connecting plate and the two pressing plates form a "U" - shaped structure.

[0022] A trapezoidal groove is formed at one end of the pressing plate far from the connecting plate.

[0023] By adopting the above technical solution, when pressing the end of the tooling, the part of the tooling connected to the pressing plate will be stuck into the trapezoidal groove of the pressing plate. Thus, the trapezoidal groove can effectively ensure the stability during the pressing process of the pressing plate on the tooling.

[0024] Preferably, the balance support plate is hollow inside. A rotating shaft is inserted horizontally through the middle of the balance support plate. The rotating shaft is driven by a corresponding motor. Activity rods are integrally formed on both the left and right sides of the rotating shaft. One end of the activity rod is connected to the rotating shaft, and the other end of the activity rod is connected to the corresponding first adjusting block or the second adjusting block.

[0025] By adopting the above technical solution, when it is necessary to adjust the first adjusting block or the second adjusting block, turn on the motor. The motor drives the rotating shaft to rotate. During the rotation of the rotating shaft, the activity rod is driven to rotate. Then, the corresponding first adjusting block or the second adjusting block is driven to be adjusted by the activity rod.

[0026] The motor is a forward - reverse motor, and the forward - reverse motor is convenient for driving the rotating shaft to rotate forward and backward.

[0027] When the shaft rotates clockwise, the movable rod moves the first adjusting block away from the tooling, while the second adjusting block moves closer to the tooling. In this state, the greater the distance between the first adjusting block and the tooling, the lower the clamping force; conversely, the closer the second adjusting block and the tooling, the higher the clamping force. The opposite occurs when the shaft rotates counterclockwise.

[0028] Furthermore, the first and second adjusting blocks can be adjusted on the balance support plate via the rotating shaft. This effectively avoids over-positioning of the tooling, thus preventing structural damage to the tooling caused by over-positioning and ensuring the forming quality of the tooling.

[0029] Preferably, a positioning step is provided on the top of the balance support plate, and the first adjusting block and the second adjusting block are respectively located on the left and right sides of the positioning step. The first adjusting block is located on the higher side of the positioning step, and the second adjusting block is located on the lower side of the positioning step. The third positioning mechanism presses the tooling onto the first adjusting block and drives the rotating shaft to rotate.

[0030] By adopting the above technical solution, this arrangement uses positioning steps to set the first and second adjusting blocks at different starting heights. As the first adjusting block descends, the second adjusting block rises synchronously, achieving optimal positioning when the second adjusting block abuts against the tooling.

[0031] When the second adjusting block comes into contact with the tooling, it transmits a signal that the tooling has reached the optimal positioning state. The operator can judge whether the tooling has reached the optimal state based on this signal, thus effectively avoiding the problem of tooling over-positioning.

[0032] Preferably, a self-locking mechanism is provided inside the balance support plate.

[0033] By adopting the above technical solution, when the second adjusting block abuts against the tooling to achieve the best positioning effect, the self-locking mechanism is used to lock the first adjusting block and the second adjusting block, thereby effectively ensuring the stability of the tooling in the best positioning state.

[0034] Preferably, the self-locking mechanism includes a balance bar, a lifting bar, and a locking seat. One end of the balance bar is connected to the first adjusting block, and the other end of the balance bar is hinged to the lifting bar via a hinge block. The left and right ends of the hinge block are respectively connected to the balance bar and the lifting bar.

[0035] The end of the balance bar away from the hinge block is connected to the first adjusting block via a corresponding connecting rod, and the top of the lifting bar is connected to the second adjusting block via a corresponding connecting rod;

[0036] The locking seat is fastened inside the balance support plate. A locking groove is provided on one side of the locking seat, and a locking block is added to one side of the bottom of the lifting rod. The locking block slides toward or away from the locking groove.

[0037] The lifting rod has an installation groove on one side of its bottom. A spring is horizontally installed in the installation groove. One end of the spring is connected to the groove wall of the installation groove, and the other end of the spring is connected to the locking block. The spring is used to push the locking block into the locking groove.

[0038] The locking seat has a vertical groove on the side away from the locking groove, and the lifting rod is slidably installed in the groove on the side away from the locking block.

[0039] By adopting the above technical solution, when the first adjusting block descends as the tooling is pressed down, the end of the balance rod connected to the first adjusting block descends synchronously, while the end of the balance rod near the hinge block moves upward. At this time, the hinge block and the lifting rod move upward synchronously under the drive of the balance rod, and drive the second adjusting block upward through the lifting rod.

[0040] When the lifting rod is raised or lowered, it causes the locking block to slide vertically until the locking block engages in the locking groove. In this state, the second adjusting block is just abutting against the tooling. As the locking block engages in the locking groove, the locking seat locks the lifting rod. After the lifting rod is locked, the second adjusting block connected to the top of the lifting rod is also locked, and at the same time, the first adjusting block is also locked.

[0041] During the lifting process, the side wall of the locking seat compresses the locking block, at which point the spring is in a compressed state. When the locking block moves upward to the locking groove, the spring releases its elastic force, pushing the locking block into the locking groove to lock it in place.

[0042] The slide rail provides good guidance for the lifting rod during its sliding process, which helps to improve the stability of the lifting rod during the sliding process.

[0043] Preferably, a first auxiliary rod and a second auxiliary rod are provided between the balance bar and the locking seat. One end of the first auxiliary rod is hinged to the side wall of the balance bar, and the other end of the first auxiliary rod is hinged to the locking seat. One end of the second auxiliary rod is hinged to the end of the balance bar, and the other end of the second auxiliary rod is hinged to the locking seat. The first auxiliary rod and the second auxiliary rod are distributed on the left and right sides of the hinge block.

[0044] By adopting the above technical solution, the first auxiliary rod and the second auxiliary rod can assist the balance bar in rotating during the rotation process, thereby helping to ensure the stability of the balance bar during the rotation process.

[0045] In summary, this application includes at least one of the following beneficial technical effects:

[0046] 1. Specifically, when positioning the tooling, the front and middle ends of the tooling are first positioned by the first and second positioning mechanisms, and then the end of the tooling is positioned by the third positioning mechanism and the first and second adjusting blocks on the balance support plate. After the third positioning mechanism and the first and second adjusting blocks clamp the end of the tooling, the contact degree between the first or second adjusting block and the end of the tooling is adjusted according to the specific positioning location and positioning effect of the first and second positioning mechanisms. This allows for corresponding adjustments to the positioning clamping force of the third positioning mechanism and the balance support plate on the end of the tooling.

[0047] For example, based on the positioning of the tooling by the first and second positioning mechanisms, it is necessary to adjust the clamping force of the third positioning mechanism and the balance support plate on the end of the tooling. In this state, the position of the first or second adjusting block on the balance support plate is adjusted. By adjusting the position of the first or second adjusting block on the balance support plate, the clamping force of the balance support plate and the third positioning mechanism on the end of the tooling can be adjusted.

[0048] This setup, utilizing the first and second adjusting blocks on the balance support plate, can effectively prevent the tooling from being over-positioned, thereby preventing structural damage to the tooling caused by over-positioning and ensuring the molding quality of the tooling.

[0049] 2. In this configuration, positioning steps are used to set the first and second adjusting blocks at different starting heights. As the first adjusting block descends, the second adjusting block rises synchronously, achieving optimal positioning when the second adjusting block abuts against the tooling.

[0050] Furthermore, when the second adjusting block comes into contact with the tooling, it transmits a signal that the tooling has reached the optimal positioning state. The operator can judge whether the tooling has reached the optimal state based on this signal, thereby effectively avoiding the problem of tooling over-positioning.

[0051] 3. As the first adjusting block descends with the downward pressure of the tooling, the end of the balance bar connected to the first adjusting block descends synchronously, while the end of the balance bar near the hinge block moves upward. At this time, the hinge block and the lifting rod move upward synchronously under the drive of the balance bar, and drive the second adjusting block upward through the lifting rod.

[0052] When the lifting rod is raised or lowered, it causes the locking block to slide vertically until the locking block engages in the locking groove. In this state, the second adjusting block is just abutting against the tooling. As the locking block engages in the locking groove, the locking seat locks the lifting rod. After the lifting rod is locked, the second adjusting block connected to the top of the lifting rod is also locked, and at the same time, the first adjusting block is also locked.

[0053] During the lifting process, the side wall of the locking seat compresses the locking block, at which point the spring is in a compressed state. When the locking block moves upward to the locking groove, the spring releases its elastic force, pushing the locking block into the locking groove to lock it in place.

[0054] The slide rail provides good guidance for the lifting rod during its sliding process, which helps to improve the stability of the lifting rod during the sliding process. Attached Figure Description

[0055] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0056] Figure 2 This is a structural schematic diagram illustrating the positional relationship of the movable rods in a specific embodiment of this application;

[0057] Figure 3 This is a structural schematic diagram illustrating the positional relationship of the positioning steps in a specific embodiment of this application;

[0058] Figure 4 This is a structural schematic diagram illustrating the positional relationship of the balance bar, lifting bar, locking seat, first auxiliary bar, and second auxiliary bar in specific embodiments of this application;

[0059] Figure 5 This is a structural schematic diagram illustrating the positional relationship of the lock groove, the locking block, the mounting groove, the spring, and the slide in the embodiment of this application.

[0060] Reference numerals: 1. Base plate; 2. First positioning mechanism; 21. First positioning block; 22. First support plate; 23. First drive cylinder; 3. Second positioning mechanism; 31. Second positioning block; 32. Second support plate; 33. Second drive cylinder; 4. Third positioning mechanism; 41. Third positioning block; 411. Connecting plate; 412. Pressure plate; 42. Third drive cylinder; 5. Balance support plate; 6. First adjusting block; 7. Second adjusting block; 8. Support block; 9. Support rod; 10. Trapezoidal groove; 11. Rotating shaft; 12. Movable rod; 13. Positioning step; 14. Self-locking mechanism; 141. Balance rod; 142. Lifting rod; 143. Locking seat; 15. Hinge block; 16. Lock groove; 17. Locking block; 18. Mounting groove; 19. Spring; 20. Slide groove; 24. First auxiliary rod; 25. Second auxiliary rod. Detailed Implementation

[0061] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail below.

[0062] Example 1:

[0063] This application discloses a positioning device for welding castings, referring to... Figure 1 The fixture includes a rectangular base plate 1, on which a first positioning mechanism 2, a second positioning mechanism 3, and a third positioning mechanism 4 are mounted. These mechanisms are used to position the front, middle, and rear ends of the fixture, respectively. After positioning the fixture, the fixture is then welded. The first positioning mechanism 2, the second positioning mechanism 3, and the third positioning mechanism 4 effectively ensure the stability of the fixture during the welding process.

[0064] At the same time, refer to Figure 1 A balance support plate 5 is added to one side of the base plate 1, which is located on the third positioning mechanism 4. The balance support plate 5 is cuboid in shape and is located at the bottom of the tooling end. The balance support plate 5 and the third positioning mechanism 4 clamp and position the end of the tooling. The bottom of the balance support plate 5 is welded to the base plate 1. The top left and right sides of the balance support plate 5 are respectively equipped with a first adjusting block 6 and a second adjusting block 7. The first adjusting block 6 and the second adjusting block 7 are supported on the bottom of the tooling. The first adjusting block 6, the second adjusting block 7 and the third positioning mechanism 4 clamp and position the end of the tooling.

[0065] Meanwhile, the first adjusting block 6 and the second adjusting block 7 are both movably mounted on the top of the balance support plate 5.

[0066] Specifically, during tooling positioning, the front and middle ends of the tooling are first positioned by the first positioning mechanism 2 and the second positioning mechanism 3. Then, the end of the tooling is positioned by the third positioning mechanism 4 and the first adjusting block 6 and the second adjusting block 7 on the balance support plate 5. After the third positioning mechanism 4 and the first adjusting block 6 and the second adjusting block 7 clamp the end of the tooling, the contact degree between the first adjusting block 6 or the second adjusting block 7 and the end of the tooling is adjusted according to the specific positioning position and positioning effect of the first positioning mechanism 2 and the second positioning mechanism 3. This allows for corresponding adjustments to the positioning clamping force of the third positioning mechanism 4 and the balance support plate 5 on the end of the tooling.

[0067] For example, based on the positioning of the tooling by the first positioning mechanism 2 and the second positioning mechanism 3, it is necessary to adjust the clamping force of the third positioning mechanism 4 and the balance support plate 5 on the end of the tooling. In this state, the position of the first adjusting block 6 or the second adjusting block 7 on the balance support plate 5 is adjusted. By adjusting the position of the first adjusting block 6 or the second adjusting block 7 on the balance support plate 5, the clamping force of the balance support plate 5 and the third positioning mechanism 4 on the end of the tooling is adjusted.

[0068] This configuration, utilizing the first adjusting block 6 and the second adjusting block 7 on the balance support plate 5, can effectively prevent the tooling from being over-positioned, thereby effectively preventing structural damage to the tooling caused by over-positioning and ensuring the forming quality of the tooling.

[0069] Specifically, refer to Figure 1 The first positioning mechanism 2 includes a first positioning block 21, a first support plate 22, and a first driving cylinder 23. The cylinder body of the first driving cylinder 23 is fastened to the base plate 1 vertically by fastening bolts. The piston rod of the first driving cylinder 23 is vertically upward. The first positioning block 21 is connected to the piston rod of the first driving cylinder 23 horizontally. The first driving cylinder 23 is used to drive the first positioning block 21 to move up and down vertically.

[0070] The first support plate 22 is welded vertically onto the base plate 1. Support blocks 8 are integrally formed on both the left and right sides of the top of the first support plate 22. The two support blocks 8 are located below the tooling. The first drive cylinder 23 drives the first positioning block 21 to press the front end of the tooling onto the two support blocks 8. Thus, the first positioning block 21 and the two support blocks 8 are used to clamp and position the front end of the tooling.

[0071] In this embodiment, rubber rings are fitted around the periphery of both support blocks 8. The rubber rings are relatively soft and effectively prevent the support blocks 8 from being directly disconnected from the tooling, thereby providing a certain degree of protection for the tooling.

[0072] Specifically, refer to Figure 1 The second positioning mechanism 3 includes a second positioning block 31, a second support plate 32, and a second drive cylinder 33. The cylinder body of the second drive cylinder 33 is fastened to the base plate 1 vertically by fastening bolts. The piston rod of the second drive cylinder 33 is vertically upward. The second positioning block 31 is connected to the piston rod of the second drive cylinder 33 horizontally. The second drive cylinder 33 is used to drive the second positioning block 31 to move up and down vertically.

[0073] Reference Figure 1, the second support plate 32 is welded to the bottom plate 1 in the vertical direction. A support rod 9 is integrally formed at the top of the second support plate 32. The support rod 9 is located below the tooling. The second driving cylinder 33 drives the second positioning block 31 to press the middle end of the tooling against the support rod 9. Thus, the middle end of the tooling is clamped and positioned by the second positioning block 31 and the support rod 9. A rubber ring is also sleeved on the circumferential side of the support rod 9.

[0074] Specifically, referring to Figure 1 , the third positioning mechanism 4 includes a third positioning block 41 and a third driving cylinder 42. The cylinder block of the third driving cylinder 42 is fastened to the bottom plate 1 in the vertical direction through a corresponding mounting bracket. The piston rod of the third driving cylinder 42 is vertically downward. The third positioning block 41 is connected to the piston rod of the third driving cylinder 42 in the horizontal direction. The third driving cylinder 42 is used to drive the third positioning block 41 to move up and down in the vertical direction.

[0075] The end of the tooling is located between the third positioning block 41 and the balance support plate 5. The first adjusting block 6 and the second adjusting block 7 on the third positioning block 41 and the balance support plate 5 clamp and position the end of the tooling.

[0076] Specifically, referring to Figure 1 , the third positioning block 41 includes a connecting plate 411 and two pressing plates 412. The connecting plate 411 is in the shape of a cuboid. The connecting plate 411 is connected to the piston rod of the third driving cylinder 42. The two pressing plates 412 are respectively welded to the left and right sides of the bottom of the connecting plate 411. The connecting plate 411 and the two pressing plates 412 form a "U" - shaped structure.

[0077] Referring to Figure 1 , a trapezoidal groove 10 is formed at one end of the pressing plate 412 away from the connecting plate 411. Specifically, when pressing the end of the tooling, the part of the tooling connected to the pressing plate 412 will be stuck into the trapezoidal groove 10 of the pressing plate 412. Thus, the trapezoidal groove 10 can effectively ensure the stability of the pressing process of the pressing plate 412 on the tooling.

[0078] Specifically, referring to Figure 1 and Figure 2 , the balance support plate 5 is hollow inside. A rotating shaft 11 is inserted horizontally through the middle of the balance support plate 5. The rotating shaft 11 is driven by a corresponding motor. On both the left and right sides of the rotating shaft 11, a movable rod 12 is integrally formed. One end of the movable rod 12 is connected to the rotating shaft 11, and the other end of the movable rod 12 is connected to the first adjusting block 6 or the second adjusting block 7.

[0079] When it is necessary to adjust the first adjusting block 6 or the second adjusting block 7 movably, turn on the motor. The motor drives the rotating shaft 11 to rotate. During the rotation of the rotating shaft 11, the movable rod 12 is driven to rotate. Thus, the corresponding first adjusting block 6 or the second adjusting block 7 is driven to be adjusted movably through the movable rod 12.

[0080] The motor is a reversible motor, which makes it easy to drive the rotating shaft 11 to rotate in both directions.

[0081] When the rotating shaft 11 rotates clockwise, the movable rod 12 drives the first adjusting block 6 to move away from the tooling, while the second adjusting block 7 moves closer to the tooling. In this state, the farther the distance between the first adjusting block 6 and the tooling, the lower the clamping force between them; the closer the distance between the second adjusting block 7 and the tooling, the higher the clamping force between them. The opposite occurs when the rotating shaft 11 rotates counterclockwise.

[0082] Furthermore, the first adjusting block 6 and the second adjusting block 7 can be adjusted on the balance support plate 5 by means of the rotating shaft 11. The first adjusting block 6 and the second adjusting block 7 can effectively avoid the phenomenon of over-positioning of the tooling, thereby effectively preventing structural damage to the tooling caused by over-positioning and helping to ensure the forming quality of the tooling.

[0083] The implementation principle of a positioning device applied to welding castings according to an embodiment of this application is as follows:

[0084] First, the front and middle ends of the tooling are positioned by the first positioning mechanism 2 and the second positioning mechanism 3. Then, the end of the tooling is positioned by the third positioning mechanism 4 and the first adjusting block 6 and the second adjusting block 7 on the balance support plate 5. After the third positioning mechanism 4 and the first adjusting block 6 and the second adjusting block 7 clamp the end of the tooling, the contact degree between the first adjusting block 6 or the second adjusting block 7 and the end of the tooling is adjusted according to the specific positioning position and positioning effect of the first positioning mechanism 2 and the second positioning mechanism 3. In this way, the positioning clamping force of the third positioning mechanism 4 and the balance support plate 5 on the end of the tooling can be adjusted accordingly.

[0085] For example, based on the positioning of the tooling by the first positioning mechanism 2 and the second positioning mechanism 3, it is necessary to adjust the clamping force of the third positioning mechanism 4 and the balance support plate 5 on the end of the tooling. In this state, the position of the first adjusting block 6 or the second adjusting block 7 on the balance support plate 5 is adjusted. By adjusting the position of the first adjusting block 6 or the second adjusting block 7 on the balance support plate 5, the clamping force of the balance support plate 5 and the third positioning mechanism 4 on the end of the tooling is adjusted.

[0086] This configuration, utilizing the first adjusting block 6 and the second adjusting block 7 on the balance support plate 5, can effectively prevent the tooling from being over-positioned, thereby effectively preventing structural damage to the tooling caused by over-positioning and ensuring the forming quality of the tooling.

[0087] Example 2:

[0088] The difference between this embodiment and Embodiment 1 is that:

[0089] Reference Figure 3 A positioning step 13 is added to the top of the balance support plate 5. The first adjusting block 6 and the second adjusting block 7 are located on the left and right sides of the positioning step 13, respectively. The first adjusting block 6 is located on the higher side of the balance support plate 5, and the second adjusting block 7 is located on the lower side of the balance support plate 5.

[0090] Meanwhile, the rotation of the shaft 11 does not require a motor drive. When the third positioning block 41 is pressed against the tooling, the tooling will preferentially abut against the first adjusting block 6 because the first adjusting block 6 is installed at a higher position on the balance support plate 5. As the third positioning block 41 continues to press the tooling down, the tooling presses down on the first adjusting block 6. As the first adjusting block 6 presses down, it drives the corresponding movable rod 12 to rotate, thereby causing the shaft 11 to rotate. The movable rod 12, located on the other side of the shaft 11 and connected to the second adjusting block 7, rotates with the rotation of the shaft 11 and drives the second adjusting block 7 to rise.

[0091] While the first adjusting block 6 is descending, the second adjusting block 7 is ascending.

[0092] When the second adjusting block 7 gradually rises and comes into contact with the tooling, this is the optimal positioning state. When the optimal state is reached, the third positioning block 41 will no longer press down on the tooling, and the positioning of the tooling is completed.

[0093] In this embodiment, the optimal positioning state of the tooling needs to be summarized through multiple tests. Based on the welding situation of the tooling after specific positioning, the optimal positioning state is summarized, and the corresponding steps on the balance support plate 5 are designed according to this optimal positioning state to ensure that the optimal positioning state is achieved when the second adjusting block 7 abuts against the tooling.

[0094] Specifically, after the first positioning mechanism 2 and the second positioning mechanism 3 have positioned the front and middle ends of the fixture, the third positioning block 41 is pressed down, so that the end of the fixture presses against the first adjusting block 6. As the fixture is pressed down, the first adjusting block 6 descends, and the second adjusting block 7 rises. Based on the optimal positioning state, when the second adjusting block 7 reaches the corresponding height, the pressing down of the third positioning block 41 is stopped. At this time, the height of the upper step of the balance support plate 5 is adjusted according to the height of the second adjusting block 7 to ensure that the optimal positioning state is achieved when the second adjusting block 7 just abuts against the fixture.

[0095] In this configuration, the positioning step 13 is used to set the first adjusting block 6 and the second adjusting block 7 to different starting heights. As the first adjusting block 6 descends, the second adjusting block 7 rises synchronously, achieving the optimal positioning state when the second adjusting block 7 abuts against the tooling.

[0096] When the second adjusting block 7 comes into contact with the tooling, it transmits a signal that the tooling has reached the optimal positioning state. The operator can judge whether the tooling has reached the optimal state based on this signal, thereby effectively avoiding the problem of tooling over-positioning.

[0097] Example 3:

[0098] The difference between this application and Embodiments 1 and 2 is that:

[0099] Reference Figure 3 and Figure 4 A self-locking mechanism 14 is provided inside the balance support plate 5. When the second adjusting block 7 abuts against the tooling to achieve the best positioning effect, the self-locking mechanism 14 is used to lock the first adjusting block 6 and the second adjusting block 7, thereby effectively ensuring the stability of the tooling in the best positioning state.

[0100] In Embodiment 2 of this application, the second adjusting block 7 is in the optimal positioning state when it abuts against the bottom of the tooling. However, when the operator judges whether the second adjusting block 7 is just abutting against the tooling or continues to make excessive contact with the tooling after abutting against it, deviations are likely to occur. This makes it easy for the abutment between the second adjusting block 7 and the tooling to become excessive, causing the tooling to miss the optimal positioning state.

[0101] The self-locking mechanism 14 can automatically lock the second adjusting block 7 when it comes into contact with the tooling, thereby effectively ensuring that the tooling is in the best positioning state. This helps to improve the positioning accuracy of the positioning device for the tooling, ensure the positioning effect, and thus effectively guarantee the welding effect and the overall forming quality of the tooling after positioning.

[0102] Specifically, refer to Figure 3 and Figure 4 The self-locking mechanism 14 includes a balance bar 141, a lifting bar 142, and a locking seat 143. One end of the balance bar 141 is connected to the first adjusting block 6, and the other end of the balance bar 141 is hinged to the lifting bar 142 through a hinge block 15. The left and right ends of the hinge block 15 are connected to the balance bar 141 and the lifting bar 142, respectively.

[0103] The end of the balance bar 141 away from the hinge block 15 is connected to the first adjusting block 6 via a corresponding connecting rod, and the top of the lifting bar 142 is also connected to the second adjusting block 7 via a corresponding connecting rod.

[0104] Specifically, when the first adjusting block 6 descends as the tooling is pressed down, the end of the balance rod 141 connected to the first adjusting block 6 descends synchronously, while the end of the balance rod 141 near the hinge block 15 moves upward. At this time, the hinge block 15 and the lifting rod 142 move upward synchronously under the drive of the balance rod 141, and drive the second adjusting block 7 upward through the lifting rod 142.

[0105] The locking seat 143 consists of two seats distributed on the left and right sides. Both seats are fastened to the balance support plate 5 by fastening bolts. A locking groove 16 is opened on one side of the locking seat 143, and a locking block 17 is added to the bottom side of the lifting rod 142. As the lifting rod 142 rises, the locking block 17 moves towards the locking groove 16 until the locking block 17 is engaged in the locking groove 16. In this state, the second adjusting block 7 just abuts against the tooling. As the locking block 17 is engaged in the locking groove 16, the locking seat 143 locks the lifting rod 142. After the lifting rod 142 is locked, the second adjusting block 7 connected to the top of the lifting rod 142 is also locked. At the same time, the first adjusting block 6 is also locked.

[0106] Specifically, refer to Figure 4 and Figure 5 The lifting rod 142 has an installation groove 18 on one side of its bottom. A spring 19 is horizontally installed in the installation groove 18. One end of the spring 19 is connected to the groove wall of the installation groove 18, and the other end of the spring 19 is connected to the locking block 17.

[0107] During the lifting process, the side wall of the locking seat 143 compresses the locking block 17, at which time the spring 19 is in a compressed state. When the locking block 17 moves upward to the locking groove 16, the spring 19 releases its elastic force to push the locking block 17 into the locking groove 16 for locking.

[0108] Meanwhile, the bottom of the locking block 17 is integrally formed with a baffle. When the locking block 17 is inserted into the locking groove 16, the baffle at the bottom of the locking block 17 abuts against the outside of the locking groove 16. The baffle facilitates the sliding of the locking block 17 out of the locking groove 16. After the tooling is welded, it is easy to unlock the lifting rod 142 on the locking seat 143 so that it can be used again next time.

[0109] At the same time, refer to Figure 4 and Figure 5 The locking seat 143 has a vertically oriented sliding groove 20 on the side away from the locking groove 16, and the lifting rod 142 is slidably installed in the sliding groove 20 on the side away from the locking block 17. The sliding groove 20 provides good guidance for the lifting rod 142 during its sliding process, thereby improving the stability of the lifting rod 142 during its sliding process.

[0110] Furthermore, referring to Figure 4A first auxiliary rod 24 and a second auxiliary rod 25 are provided between the balance bar 141 and the locking seat 143. One end of the first auxiliary rod 24 is hinged to the side wall of the balance bar 141, and the other end of the first auxiliary rod 24 is hinged to the locking seat 143. One end of the second auxiliary rod 25 is hinged to the end of the balance bar 141, and the other end of the second auxiliary rod 25 is also hinged to the locking seat 143. The first auxiliary rod 24 and the second auxiliary rod 25 are distributed on the left and right sides of the hinge block 15.

[0111] During the rotation of the balance bar 141, the first auxiliary rod 24 and the second auxiliary rod 25 assist the balance bar 141 in rotating, thereby helping to ensure the stability of the balance bar 141 during rotation.

[0112] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A positioning device for welding castings, characterized in that: The fixture includes a base plate (1), on which a first positioning mechanism (2), a second positioning mechanism (3), and a third positioning mechanism (4) are provided. The first positioning mechanism (2), the second positioning mechanism (3), and the third positioning mechanism (4) are used to position the front end, the middle end, and the end end of the fixture, respectively. A balance support plate (5) is added to one side of the base plate (1) located at the third positioning mechanism (4). The balance support plate (5) and the third positioning mechanism (4) clamp and position the end end of the fixture. The bottom of the balance support plate (5) is fixed on the base plate (1). A first adjusting block (6) and a second adjusting block (7) are respectively installed on the left and right sides of the top of the balance support plate (5). The first adjusting block (6) and the second adjusting block (7) are supported on the bottom of the fixture. The first adjusting block (6), the second adjusting block (7), and the third positioning mechanism (4) clamp and position the end end of the fixture. The first adjusting block (6) and the second adjusting block (7) are both movably mounted on the top of the balance support plate (5).

2. The positioning device for welding castings according to claim 1, characterized in that: The first positioning mechanism (2) includes a first positioning block (21), a first support plate (22) and a first driving cylinder (23). The first positioning block (21) is connected to the piston rod of the first driving cylinder (23). The first driving cylinder (23) is used to drive the first positioning block (21) to move up and down in the vertical direction. The first support plate (22) is fixed vertically on the base plate (1). The top left and right sides of the first support plate (22) are integrally formed with support blocks (8). The two support blocks (8) are located below the tooling. The first driving cylinder (23) drives the first positioning block (21) to press the front end of the tooling onto the two support blocks (8).

3. The positioning device for welding castings according to claim 1, characterized in that: The second positioning mechanism (3) includes a second positioning block (31), a second support plate (32) and a second driving cylinder (33). The second positioning block (31) is connected to the piston rod of the second driving cylinder (33). The second driving cylinder (33) is used to drive the second positioning block (31) to move up and down in the vertical direction. The second support plate (32) is fixed vertically on the base plate (1). The top of the second support plate (32) is integrally formed with a support rod (9). The support rod (9) is located below the tooling. The second drive cylinder (33) drives the second positioning block (31) to press the middle end of the tooling onto the support rod (9).

4. A positioning device for welding castings according to claim 1, characterized in that: The third positioning mechanism (4) includes a third positioning block (41) and a third driving cylinder (42). The third positioning block (41) is connected to the piston rod of the third driving cylinder (42). The third driving cylinder (42) is used to drive the third positioning block (41) to move up and down in the vertical direction. The end of the tooling is located between the third positioning block (41) and the balance support plate (5), and the first adjusting block (6) and the second adjusting block (7) on the third positioning block (41) and the balance support plate (5) clamp and position the end of the tooling.

5. A positioning device for welding castings according to claim 4, characterized in that: The third positioning block (41) includes a connecting plate (411) and two pressing plates (412). The connecting plate (411) is connected to the piston rod of the third driving cylinder (42). The two pressing plates (412) are respectively fixedly connected to the left and right sides of the bottom of the connecting plate (411). The connecting plate (411) and the two pressing plates (412) form a "U" - shaped structure; One end of the pressing plate (412) away from the connecting plate (411) is provided with a trapezoidal groove (10).

6. A positioning device for welding castings according to claim 5, characterized in that: The balance support plate (5) is hollow inside. A rotating shaft (11) is inserted horizontally through the middle of the balance support plate (5). The rotating shaft (11) is driven by a corresponding motor. On both the left and right sides of the rotating shaft (11), a movable rod (12) is integrally formed. One end of the movable rod (12) is connected to the rotating shaft (11), and the other end of the movable rod (12) is connected to the corresponding first adjusting block (6) or the second adjusting block (7).

7. A positioning device for welding castings according to claim 6, characterized in that: A positioning step (13) is added to the top of the balance support plate (5). The first adjusting block (6) and the second adjusting block (7) are respectively located on the left and right sides of the positioning step (13). The first adjusting block (6) is located on the higher side of the positioning step (13), and the second adjusting block (7) is located on the lower side of the positioning step (13). The third positioning mechanism (4) presses the tooling against the first adjusting block (6) and drives the rotating shaft (11) to rotate.

8. A positioning device for welding castings according to claim 7, characterized in that: A self - locking mechanism (14) is added inside the balance support plate (5).

9. A positioning device for welding castings according to claim 8, characterized in that: The self - locking mechanism (14) includes a balance rod (141), a lifting rod (142), and a locking seat (143). One end of the balance rod (141) is connected to the first adjusting block (6). The other end of the balance rod (141) is hinged to the lifting rod (142) through a hinge block (15). The left and right ends of the hinge block (15) are respectively connected to the balance rod (141) and the lifting rod (142); A corresponding connecting rod is connected between the end of the balance rod (141) away from the hinge block (15) and the first adjusting block (6). A corresponding connecting rod is connected between the top of the lifting rod (142) and the second adjusting block (7); The locking seat (143) is fastened inside the balance support plate (5). A locking groove (16) is opened on one side of the locking seat (143). A clamping block (17) is added to one side of the bottom of the lifting rod (142). The clamping block (17) slides in the direction of approaching or departing from the locking groove (16); The lifting rod (142) has an installation groove (18) on one side of its bottom. A spring (19) is horizontally installed in the installation groove (18). One end of the spring (19) is connected to the groove wall of the installation groove (18), and the other end of the spring (19) is connected to the locking block (17). The spring (19) is used to push the locking block (17) into the locking groove (16). The locking seat (143) has a vertical groove (20) on the side away from the locking groove (16), and the lifting rod (142) is slidably installed in the groove (20) on the side away from the locking block (17).

10. A positioning device for welding castings according to claim 9, characterized in that: A first auxiliary rod (24) and a second auxiliary rod (25) are provided between the balance bar (141) and the locking seat (143). One end of the first auxiliary rod (24) is hinged to the side wall of the balance bar (141), and the other end of the first auxiliary rod (24) is hinged to the locking seat (143). One end of the second auxiliary rod (25) is hinged to the end of the balance bar (141), and the other end of the second auxiliary rod (25) is hinged to the locking seat (143). The first auxiliary rod (24) and the second auxiliary rod (25) are distributed on the left and right sides of the hinge block (15).

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