Welding tool for discharging door of stirrer

Abstract

The utility model discloses a welding tool for a discharging door of a stirrer in the field of welding tools, and aims to solve the problem that in the prior art, the discharging door deforms after being welded and influences use, the welding tool comprises a platform used for containing the discharging door, and a first positioning device and a second positioning device are installed at the two ends of the platform correspondingly; a plurality of deformation assemblies are further arranged between the first positioning device and the second positioning device and installed on the platform. Each deformation assembly comprises a first stand column, a second stand column and a pressing plate, the fixed end of each pressing plate is installed on the corresponding first stand column, a first bolt is arranged in the middle of each pressing plate, and the first bolts are used for exerting pressure enabling the discharging door to deform on the discharging door installed on the platform. The force applying device is used for applying force enabling the discharging door to deform to the discharging door installed on the platform, so that the discharging door deforms in the direction opposite to the post-welding deformation, the post-welding deformation is counteracted, and the situation that the post-welding deformation affects use is avoided.

Description

Technical Field

[0001] This application relates to the field of welding tooling, and particularly to a welding tooling for the discharge door of a mixer. Background Art

[0002] The discharge door is one of the important components of a twin-shaft mixer and is a key component for controlling the discharge of finished concrete in the mixer. The main task of the discharge door is to perform the opening action during discharging and the closing action after discharging according to the instructions of the control system, and then carry out the next cycle of mixing operation. Therefore, whether the opening and closing reciprocating actions of the discharge door are smooth, the angle is in place, and the sealing performance during closing are crucial for the normal operation of the mixer.

[0003] In actual production, abnormal feedback such as the opening and closing angles not being in place, flash seams during closing, water and slurry leakage, and sticking during opening and closing often occur in the mixer, seriously affecting the mixing quality, discharge efficiency of the mixer and the production site environment. The above problems are closely related to the fact that the post-welding accuracy of the discharge door structural parts cannot meet the design requirements. Through long-term production practice, it is found that the discharge door will undergo a certain degree of shrinkage deformation after welding, and the longer the length of the discharge door, the more obvious the deformation trend and the greater the bending deformation of the arc plate. The post-welding deformation of the discharge door affects its use. Utility Model Content

[0004] The purpose of this application is to provide a welding tooling for the discharge door of a mixer, which sets a deformation component on the platform to apply pressure to the discharge door, making it deform in the direction of post-welding deformation to suppress the post-welding deformation.

[0005] To solve the above technical problems, the following technical solutions are adopted:

[0006] A welding tooling for the discharge door of a mixer includes a platform for placing the discharge door. First positioning devices and second positioning devices are respectively installed at both ends of the platform. A plurality of deformation components are also provided between the first positioning device and the second positioning device, and the deformation components are installed on the platform.

[0007] The deformation component includes a first column, a second column and a pressing plate. The first column and the second column are respectively installed on both sides of the platform. The fixed end of the pressing plate is installed on the first column. A bolt hole is provided in the middle of the pressing plate, and a first bolt is provided in the bolt hole. The first bolt is used to apply pressure to the discharge door installed on the platform to make it deform.

[0008] Optionally, the fixed end of the pressing plate is installed on the end face of the first column through a second bolt, and the pressing plate can rotate around the second bolt.

[0009] Optionally, the second column is on the same straight line as the first column, the second column is higher than the first column, and a clamping groove is provided on the side of the second column for placing the free end of the pressing plate.

[0010] Optionally, the first positioning device is installed in the first positioning groove on the platform. A guiding groove is provided in the first positioning groove, and a guiding block is provided at the bottom of the first positioning device. The guiding block is arranged in the guiding groove, and the first positioning device can move towards the second positioning device through the guiding block and the guiding groove.

[0011] Optionally, the first positioning device is fixed by the bolt holes provided on its base, fixing bolts and the mounting holes on both sides in the first positioning groove. A gasket is also provided between the bolt and the first positioning device.

[0012] Optionally, the second positioning device is installed in the second positioning groove, and the second positioning device is fixed by the bolt holes provided on its base, fixing bolts and the mounting holes provided on both sides in the second positioning groove. A gasket is provided between the bolt and the second positioning device.

[0013] Optionally, semi-circular shaft sleeves are provided on both the first positioning device and the second positioning device, and a long shaft is provided in the semi-circular shaft sleeve for positioning the circular baffles at both ends of the discharge door.

[0014] Optionally, a plurality of support plates are further provided on the platform for supporting the discharge door on the platform.

[0015] Optionally, a plurality of lifting brackets are provided on the side surface of the platform for connecting the platform and the lifting rope when the platform is lifted.

[0016] Compared with the prior art, the beneficial effects achieved by the present application are as follows:

[0017] 1. By providing a plurality of deformation components on the platform, the present utility model applies a force to deform the discharge door installed on the platform, making it deform in the opposite direction of the post-welding deformation to offset the post-welding deformation amount and avoid the influence of post-welding deformation on use.

[0018] 2. The present utility model uses the positioning devices at both ends to position the circular baffles at both ends of the discharge door, which can better limit the position of the discharge door and is not prone to shaking during welding. By setting one of the positioning devices to be adjustable and movable, it can meet the processing requirements of discharge doors of different lengths. By providing multiple deformation components on the platform, it can meet the requirement of applying force at different positions on discharge doors of different lengths, making the deformation before welding of the discharge door more symmetrical and improving the accuracy. Description of the Drawings

[0019] Figure 1It is a schematic diagram of the overall structure of a welding tooling for the discharge door of a mixer provided in Embodiment 1 of the present utility model;

[0020] Figure 2 It is a schematic diagram of the front structure of the platform in Embodiment 1 of the present utility model;

[0021] Figure 3 It is a schematic diagram of the back structure of the platform in Embodiment 1 of the present utility model;

[0022] Figure 4 It is a schematic diagram of the structure of the first positioning device in Embodiment 1 of the present utility model;

[0023] Figure 5 It is a schematic diagram of the structure of the second positioning device in Embodiment 1 of the present utility model;

[0024] Figure 6 It is a schematic diagram of the structure of the long shaft in Embodiment 1 of the present utility model;

[0025] Figure 7 It is a schematic diagram of the structure of the support plate in Embodiment 1 of the present utility model;

[0026] Figure 8 It is a schematic diagram of the structure of the pressing plate in Embodiment 1 of the present utility model;

[0027] Figure 9 It is a schematic diagram of the structure of the second column in Embodiment 1 of the present utility model;

[0028] Figure 10 It is a schematic diagram of the structure of the first column in Embodiment 1 of the present utility model;

[0029] Figure 11 It is a schematic diagram of the state before installing the discharge door on the welding tooling in Embodiment 2 of the present utility model;

[0030] Figure 12 It is a schematic diagram of the state after installing the discharge door on the welding tooling in Embodiment 2 of the present utility model;

[0031] Figure 13 It is a front view structure schematic diagram after installing the discharge door on the welding tooling in Embodiment 2 of the present utility model;

[0032] Figure 14 It is a side view structure schematic diagram after installing the discharge door on the welding tooling in Embodiment 2 of the present utility model;

[0033] Explanation of reference numerals:

[0034] 1. Platform; 2. First positioning device; 3. Second positioning device; 4. First column; 5. Second column; 6. Pressure plate; 7. First bolt; 8. Second bolt; 9. Card slot; 10. Support plate; 11. Long shaft; 12. Semi-circular bushing; 13. Guide block; 14. Guide groove; 15. Screw; 16. Fixed bolt; 17. First positioning groove; 18. Second positioning groove; 19. Mounting hole; 20. Lifting bracket. Detailed implementation manner

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The following description of at least one exemplary embodiment is actually illustrative only and in no way limits the present application and its application or use.

[0036] Embodiment 1

[0037] As Figures 1-10 shown, this embodiment provides a welding tooling for the discharge door of a mixer, including a platform 1 for placing the discharge door. The first positioning device 2 and the second positioning device 3 are respectively installed at both ends of the platform 1. There are also a plurality of deformation components between the first positioning device 2 and the second positioning device 3, and the deformation components are installed on the platform 1.

[0038] The deformation component includes a first column 4, a second column 5 and a pressure plate 6. The first column 4 and the second column 5 are respectively installed on both sides of the platform 1. The fixed end of the pressure plate 6 is installed on the first column 4. A bolt hole is provided in the middle of the pressure plate 6, and a first bolt 7 is provided in the bolt hole. The first bolt 7 is used to apply a force to the discharge door installed on the platform 1 to make it deformed.

[0039] As Figure 1 shown, the discharge door includes circular baffles at both ends and a bottom plate between the circular baffles. The two ends of the bottom plate are fixed at the lowest points of the circular baffles. Then, the discharge door is further processed. It is necessary to weld the stay bars at the highest points of the circular baffles at both ends. After welding the discharge door, there will be a certain shrinkage, and the whole discharge door will bend towards the stay bars. Using the deformed discharge door will result in abnormal situations such as the opening and closing angles not reaching the position, the door flashing when closing, water leakage and slurry leakage, and the opening and closing getting stuck.

[0040] Using the welding tooling provided in this embodiment, install the discharge door that needs to be welded with stiffeners on the platform 1. The circular baffles at both ends of the discharge door are respectively positioned on the first positioning device 2 and the second positioning device 3. There are multiple deformation components on the platform 1. Between the first column 4 and the second column 5 on both sides of the discharge door, a pressing plate 6 is located above the discharge door. A first bolt 7 is also provided on the pressing plate 6. Screw the first bolt 7 towards the discharge door to apply a downward force on the discharge door through the first bolt 7, causing it to bend towards the bottom plate. Then, weld the stiffeners at the highest points of the circular baffles at both ends. After the welding of the stiffeners is completed, due to shrinkage during welding, the discharge door after welding the stiffeners bends towards the direction of the stiffeners, which is opposite to the bending direction before welding, and they exactly cancel each other out. After the shrinkage phenomenon occurs during welding, a flat discharge door is obtained.

[0041] Embodiment 2

[0042] Based on Embodiment 1, this application provides a technical solution. The difference from Embodiment 1 is that the first positioning device 2 is installed in the first positioning groove 17 on the platform 1. A guide groove 14 is provided in the first positioning groove 17. A guide block 13 is provided at the bottom of the first positioning device 2, and the guide block 13 is arranged in the guide groove 14. The guide groove 14 is located in the middle of the platform 1. The first positioning device moves towards the second positioning device 3 through the guide block 13 and the guide groove 14. The first positioning device 2 is fixed by the bolt holes provided on its base, the fixing bolts 16, and the mounting holes 19 on both sides in the first positioning groove 17. A gasket is also provided between the bolt and the first positioning device 2.

[0043] The position of the first positioning device 2 on the platform 1 can be changed. The discharge door is arranged between the first positioning device 2 and the second positioning device 3. By adjusting the position of the first positioning device 2 on the platform 1, the distance between the first positioning device 2 and the second positioning device 3 can be adjusted to adapt to discharge doors of more models.

[0044] Remove the bolts on the base of the first positioning device 1, then move the first positioning device 2, and then install the bolts to fix the first positioning device 2 for use. Among them, multiple mounting holes 19 are provided on both sides of the first positioning groove 17 to adapt to the fixation of the adjusted first positioning device 2. Strengthen the fixation through gaskets to prevent the first positioning device 2 from shaking during the welding of the discharge door and affecting the accuracy of the welding device.

[0045] The second positioning device 3 is installed in the second positioning groove 18. The second positioning device 3 is fixed by the bolt holes provided on its base, the fixing bolts 16, and the mounting holes provided on both sides in the second positioning groove 18. A gasket is provided between the bolt and the second positioning device 3. The second positioning device 3 is fixed for use in the second positioning groove 18.

[0046] Semicircular shaft sleeves 12 are provided on both the first positioning device 2 and the second positioning device 3. A long shaft 11 is provided inside the semicircular shaft sleeves 12. The circular baffles at both ends of the discharge door are positioned and limited by the long shafts provided on the first positioning device 2 and the second positioning device 3.

[0047] Support plates 10 are further provided on the platform 1. The support plates 10 are located at the middle position of the platform 1 and there are multiple of them. The support plates are installed on the platform 1 by screws 15. The support plates 10 have a flat bottom and a V-shaped structure at the upper end, and are used to support the middle position of the discharge door.

[0048] One deformation assembly is provided at one end of the platform 1 where the second positioning device 3 is provided, and two deformation assemblies are provided at the end where the first positioning device 2 is provided. The two deformation assemblies are arranged at intervals. When the discharge door to be processed is short, the first positioning device 2 needs to move towards the second positioning device 3, and the deformation assembly far from the first positioning device 2 is used to apply a force to deform the discharge door. At the same time, the deformation assembly close to the second positioning device 3 is used. When the discharge door to be processed is long, the deformation assembly close to the first positioning device 2 and the deformation assembly close to the second positioning device 3 are used. By selecting deformation assemblies at different positions when processing discharge doors of different lengths, the deformation force applied by the first bolt 7 in the deformation assembly is more symmetrical on the discharge door, ensuring the accuracy of the processed discharge door.

[0049] The number and relative positions of the deformation assemblies can be increased to adapt to discharge doors of more specifications.

[0050] A plurality of lifting brackets 20 are provided on both sides of the platform, and the platform is moved using the lifting brackets 20.

[0051] As Figure 11 shown, during use, measure the length of the discharge door to be processed, and then adjust the position of the first positioning device 2 so that the distance between the first positioning device 2 and the second positioning device 3 is equal to the length of the discharge door. Rotate all the pressing plates 6 on the platform 1 to a position parallel to the long side of the platform 1.

[0052] As Figure 12 shown, hoist the discharge door to be processed above the welding fixture. The bottom plate of the discharge door is closely attached to the support plate 10 on the platform, and the circular baffles of the discharge door are located at both ends. Insert the long shaft 11 into the shaft sleeves at the centers of the circular baffles at both ends of the discharge door, and then select the deformation assembly on the platform 1 according to the length of the discharge door, and rotate the pressing plate 6 in the deformation assembly above the discharge door.

[0053] As Figures 13-14As shown, when the first bolt 7 corresponding to precession applies a downward force to the discharge door to deform it, stop precessing the first bolt 7 when the long axis 11 on the circular baffle is in full contact with the semi-circular shaft sleeves 12 on the two end positioning devices. The distance a between the position of the long axis before precessing the first bolt 7 and the position of the long axis after stopping precessing is the amount of reverse deformation, completing the deformation before welding. Then, start welding the stay bars at the highest points of the two end circular baffles.

[0054] Before welding the stay bars on the discharge door, bottom plates are fixed at the lowest points of the two end circular baffles. Then, a downward force is applied to the reinforcement plate on the discharge door through the welding fixture to deform it downward to form a convex arc shape. Then, on the basis of the deformation, the stay bars are welded at the highest points of the two end circular baffles of the discharge door. After welding the stay bars, due to shrinkage during welding, the highest points of the two ends of the circular baffle will be pulled closer. And due to the downward force applied before welding, the lowest points of the two ends of the circular baffle of the discharge door are pulled closer, and the highest points are moved farther away. After welding, due to the force that pulls the highest points of the stay bars welded at the highest points of the two ends of the circular baffle closer, the lowest points are moved farther away. The deformation after welding balances the deformation before welding. After welding, the discharge door is in a flat state.

[0055] The above are only the preferred embodiments of the present application. It should be noted that for those of ordinary skill in the art of this technology, without departing from the technical principle of the present application, several improvements and deformations can be made, and these improvements and deformations should also be regarded as the protection scope of the present application.

Claims

1. A welding tool for a mixer discharge door, comprising a platform for placing the discharge door, characterized in that: A first positioning device and a second positioning device are respectively installed at both ends of the platform, and a plurality of deformation components are also arranged between the first positioning device and the second positioning device, and the deformation components are installed on the platform; The deformation assembly includes a first column, a second column and a pressure plate, the first column and the second column are respectively installed on both sides of the platform, the fixed end of the pressure plate is installed on the first column, a bolt hole is provided in the middle of the pressure plate, a first bolt is provided in the bolt hole, and the first bolt is used to apply pressure to the unloading door installed on the platform to cause it to deform.

2. The welding tool for the mixer discharge door according to claim 1, characterized in that: The fixed end of the pressing plate is mounted on the end surface of the first column through a second bolt, and the pressing plate can rotate around the second bolt.

3. The welding tool for the mixer discharge door according to claim 1, characterized in that: The second column and the first column are located on the same straight line, the second column is higher than the first column, and a slot is provided on the side of the second column, and the slot is used to place the free end of the pressing plate.

4. The welding tool for the mixer discharge door according to claim 1, characterized in that: The first positioning device is installed in the first positioning groove on the platform. A guide groove is provided in the first positioning groove. A guide block is provided at the bottom of the first positioning device. The guide block is arranged in the guide groove. The first positioning device moves toward the second positioning device through the guide block and the guide groove.

5. The welding tool for the mixer discharge door according to claim 4, characterized in that: The first positioning device is fixed by means of bolt holes, fixing bolts and mounting holes on both sides of the first positioning groove, and a gasket is provided between the bolt and the first positioning device.

6. The welding tool for the mixer discharge door according to claim 1, characterized in that: The second positioning device is installed in the second positioning groove. The second positioning device is fixed by bolt holes provided on its base, fixing bolts and mounting holes provided on both sides of the second positioning groove. A gasket is provided between the bolts and the second positioning device.

7. The welding tool for the mixer discharge door according to claim 1, characterized in that: The first positioning device and the second positioning device are both provided with semicircular shaft sleeves, and a long shaft is provided inside the semicircular shaft sleeves. The long shaft is used to position the circular baffles at both ends of the discharge door.

8. The welding tool for the mixer discharge door according to claim 1, characterized in that: The platform is also provided with a plurality of support plates, and the support plates are used to support the discharge door on the platform.

9. The welding tool for the mixer discharge door according to claim 1, characterized in that: A plurality of hoisting brackets are arranged on the side surface of the platform, and the hoisting brackets are used for connecting the platform with the hoisting rope when the platform is hoisted.

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