A welding device for processing an electric energy meter box

Abstract

The present invention relates to a device for processing and welding an electric energy meter box, and in particular to the field of meter box welding. In order to overcome the shortcomings that the quality of manual welding welds is difficult to reach a uniform standard, the flexibility of automated equipment is poor, and it cannot be easily carried. It includes a first sliding frame, the first sliding frame is slidably connected to the second sliding frame, the first sliding frame and the second sliding frame are both fixedly connected to friction blocks, the side of the second sliding frame away from the first sliding frame is fixedly connected to an indicator bar, the side of the first sliding frame and the second sliding frame are both fixedly connected to a guide rail, the side of the first sliding frame away from the second sliding frame is fixedly connected to a piston cylinder, and the piston rod of the piston cylinder is fixedly connected to a clamping frame. The present invention realizes that the meter box can be flexibly adjusted according to the length of the meter box skeleton while being portable through the movement and adjustment of the first sliding frame and the second sliding frame, thereby adapting to meter boxes of different lengths.

Description

Technical Field

[0001] The invention relates to the field of meter box welding, in particular to a processing and welding device for an electric energy meter box. Background Art

[0002] As an important component of electric energy metering equipment, the electric energy meter box plays a key role in protecting internal electronic components, providing physical protection, and ensuring electrical safety. In production, the welding process, as an important step in the molding process, ensures the reliability and durability of the electric energy meter box.

[0003] In the production process, the processes currently used are divided into manual welding and automatic welding. Manual welding has relatively high flexibility and low welding costs, but it is difficult to guarantee the quality of welding and it is difficult for the welds to meet uniform standards. The automatic welding process is mainly carried out through integrated automatic welding equipment, which has the advantages of good weld consistency and high welding precision. However, the automation equipment itself has many electronic components, is relatively heavy and bulky, has relatively poor flexibility, and cannot be easily carried. Summary of the Invention

[0004] In order to overcome the shortcomings of manual welding, such as difficulty in achieving uniform weld quality standards, poor flexibility of automated equipment, and difficulty in easy transportation, the technical problem to be solved is: to provide a welding device for processing an electric energy metering box.

[0005] The technical solution of the present invention is: a device for processing and welding an electric energy meter box, comprising a first sliding frame, the first sliding frame being slidably connected to the second sliding frame, the first sliding frame and the second sliding frame being fixedly connected to a friction block, the second sliding frame being fixedly connected to an indicator bar on a side away from the first sliding frame, the first sliding frame and the second sliding frame being fixedly connected to a guide rail, a slider being slidably connected between the first sliding frame and the second sliding frame, the slider and the guide rail being slidably mounted on the slider, a welding gun being slidably installed on the slider, a cam being transferred to a side of the first sliding frame adjacent to the friction block, a lifting block being slidably connected to a side of the first sliding frame adjacent to the cam for limiting the second sliding frame, the lifting block and the cam being extruded and matched for fastening the first sliding frame and the second sliding frame, a piston cylinder being fixedly connected to a side of the first sliding frame away from the second sliding frame, a clamping frame being fixedly connected to the piston rod of the piston cylinder, and an unlocking component for welding disengagement is provided on the right side of the slider.

[0006] As a further preferred solution, the unlocking component includes a lock buckle, which is connected to one side of the slider, one side of the lock buckle is clamped with the welding gun, a first torsion spring is sleeved between the lock buckle and the slider, a rubber wheel is connected to the side of the lock buckle away from the welding gun, and a spring is sleeved between the slider and the welding gun.

[0007] As a further preferred solution, a rubber pad is further included, which is respectively fixed to one side of the clamping frame and the left side of the rightmost part of the second sliding frame.

[0008] As a further preferred solution, the guide rails installed on the first sliding frame and the second sliding frame are located on the same side.

[0009] As a further preferred solution, the height of the indicator bar is the same as the center height of the welding gun.

[0010] As a further preferred solution, it also includes a hard oil pipe, which is fixedly connected to the first sliding frame and communicated with the piston cylinder. The side of the hard oil pipe away from the clamping frame is fixedly connected to an oil storage cylinder, which is fixedly connected to the first sliding frame. The oil storage cylinder is filled with hydraulic oil, and an oil delivery rod for driving the flow of hydraulic oil is slidably connected in the oil storage cylinder, and a connecting rod is connected between the oil delivery rod and the cam.

[0011] As a further preferred solution, it also includes a fixed frame, which is fixed to the side of the first sliding frame adjacent to the oil storage cylinder. The fixed frame is fixedly installed with the first motor, the output shaft of the first motor is fixed with a worm, the cam is fixed with a worm wheel, and the worm wheel is meshed with the worm.

[0012] As a further preferred solution, it also includes a second motor, which is fixedly mounted on a side of the first sliding frame close to the initial position of the slider, the first sliding frame is connected to the tensioning rod, and a second torsion spring is fixedly connected between the tensioning rod and the first sliding frame, and a wire pulley is fixedly mounted on the output shaft of the second motor, and there are at least three wire pulleys, and the other two wire pulleys are respectively connected to the second sliding frame and one side of the tensioning rod, and a pull rope is arranged between the at least three wire pulleys, and the pull rope is fixedly connected to the slider, and a contact switch is fixedly mounted on the side of the second sliding frame away from the first sliding frame, and the contact switch is electrically connected to the second motor through a control module for controlling the second motor to stop.

[0013] As a further preferred solution, it also includes a screw, which is threadedly connected to the second sliding frame and one side of the clamping frame respectively. The clamping frame is slidably connected to the first adjusting frame, the first adjusting frame is connected to the screw provided on the clamping frame, the second sliding frame is slidably connected to the side away from the clamping frame, the second adjusting frame is connected to the screw provided on the second sliding frame, and the second adjusting frame is slidably matched with the first adjusting frame to tighten the metering box frame and the stainless steel outer plate.

[0014] The present invention has the following advantages: through the movement and adjustment of the first sliding frame and the second sliding frame, the present invention can be flexibly adjusted according to the length of the metering box frame while being portable, thereby adapting to metering boxes of different lengths, and then high-quality welding is achieved through the cooperation of the welding gun and the slider, ensuring the consistency of the weld.

[0015] By cooperating with the lifting block and the clamping frame, the first and second slides are firmly fixed on the metering box frame, preventing the first and second slides from deviating during welding and ensuring the quality of welding.

[0016] Through the cooperation between the lock buckle and the welding gun, when the first sliding frame and the second sliding frame loosen and slide down, the welding gun is automatically and quickly driven out of the welding position.

[0017] Through the cooperation of the tensioning rod and the second torsion spring, it is possible to automatically adjust adaptively according to the moving distance of the first sliding frame and the second sliding frame, so that the pull rope is always in a taut state, thereby allowing the welding gun to adaptively weld the metering box.

[0018] Through the cooperation of the second adjustment frame and the screw, the stainless steel outer plate and the metering box frame are pressed tightly to prevent the weld between the stainless steel plate and the metering box frame from being too large, which may cause a cold weld on the welding gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention in working state.

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the slider, welding gun, cam and other components of the present invention.

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the guide rail, slider, welding gun and other components of the present invention.

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the spring, lock catch, first torsion spring and other components of the present invention.

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the piston cylinder, clamping frame and rubber pad of the present invention.

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the connecting rod, oil storage cylinder, oil feeding rod and other components of the present invention.

[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of the fixing frame, the first motor, the worm and other components of the present invention.

[0027] Figure 9 It is a schematic diagram of the three-dimensional structure of the second motor, tensioning rod, second torsion spring and other components of the present invention.

[0028] Figure 10 It is a schematic diagram of the three-dimensional structure of the first sliding frame, the tensioning rod and the second torsion spring of the present invention.

[0029] Figure 11 It is a schematic diagram of the three-dimensional structure of the clamping frame, screw rod, second adjustment frame and other components of the present invention.

[0030] Figure 12 It is a schematic diagram of the three-dimensional structure of the screw rod, the first adjustment frame and the second adjustment frame of the present invention.

[0031] Among them: 101-first sliding frame, 102-second sliding frame, 103-friction block, 104-indicator bar, 105-guide rail, 106-slider, 107-welding gun, 108-cam, 109-lifting block, 110-piston cylinder, 111-clamping frame, 112-rubber pad, 113-spring, 1131-metering box frame, 114-lock buckle, 115-first torsion spring, 116-rubber wheel , 201-hard oil pipe, 202-oil storage cylinder, 203-oil delivery rod, 204-connecting rod, 301-fixed frame, 302-first motor, 303-worm, 304-worm wheel, 401-second motor, 402-tensioning rod, 403-second torsion spring, 404-reel, 405-pull rope, 406-contact switch, 501-screw, 502-first adjusting frame, 503-second adjusting frame. DETAILED DESCRIPTION

[0032] The present invention will be further described below with reference to specific embodiments. It should be noted that, unless otherwise specified or limited, terms such as "dispose," "install," "connect," and "connect" should be understood in a broad sense. For example, "connect" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; or it may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0033] Example 1: A welding device for processing an electric energy meter box, such as Figures 1-6As shown, it includes a first sliding frame 101, a second sliding frame 102 is slidably connected to the right side of the first sliding frame 101, friction blocks 103 are fixed to the bottom of the first sliding frame 101 and the second sliding frame 102, a rectangular indicator bar 104 is fixed to the upper right side of the second sliding frame 102, the top of the indicator bar 104 is used to align the height with the metering box frame 1131, the height of the top of the indicator bar 104 is the same as the center height of the welding gun 107, the lower side of the first sliding frame 101 and the second sliding frame 102 are fixed with a guide rail 105, the guide rails 105 located on the first sliding frame 101 and the second sliding frame 102 are staggered, a slider 106 is slidably connected between the first sliding frame 101 and the second sliding frame 102, and two guide grooves are opened at the bottom of the slider 106, and the guide groove at the bottom of the slider 106 is slidably connected to the guide rail 105 The guide rails 105 installed on the first sliding frame 101 and the second sliding frame 102 are located on the same side, and a welding gun 107 is slidably installed on the slider 106. A cam 108 is connected to the middle of the lower part of the first sliding frame 101, and the right side of the cam 108 is a lifting part. The lower part of the first sliding frame 101 is slidably connected with a lifting block 109 for limiting the second sliding frame 102. The lifting block 109 is squeezed and matched with the cam 108 to fasten the first sliding frame 101 and the second sliding frame 102. A piston cylinder 110 is fixed to the left side of the first sliding frame 101, and a clamping frame 111 is fixed to the piston rod on the left side of the piston cylinder 110, and also includes a rubber pad 112, which is respectively fixed to the right side of the clamping frame 111 and the left side of the rightmost part of the second sliding frame 102. An unlocking component for welding disengagement is provided on the right side of the slider 106.

[0034] like Figure 4 and Figure 5 As shown, the lock buckle 114 is connected to the right side of the slider 106, the front side of the lock buckle 114 is clamped with the right side of the welding gun 107, a first torsion spring 115 is sleeved between the lock buckle 114 and the slider 106, a rubber wheel 116 is transferred to the right side of the rear part of the lock buckle 114, and a spring 113 is sleeved between the slider 106 and the welding gun 107.

[0035] like Figure 1 、 Figure 2 and Figure 7 As shown, it also includes a hard oil pipe 201, which is fixedly connected to the first sliding frame 101 and communicated with the piston cylinder 110. An oil storage cylinder 202 is fixedly connected to the right side of the hard oil pipe 201, and the oil storage cylinder 202 is fixedly connected to the lower part of the first sliding frame 101. The oil storage cylinder 202 is filled with hydraulic oil, and an oil delivery rod 203 for driving the flow of hydraulic oil is slidably connected in the oil storage cylinder 202. A connecting rod 204 is connected between the right side of the oil delivery rod 203 and the left side of the cam 108.

[0036] like Figure 1 、 Figure 2 and Figure 8As shown, it also includes a fixed frame 301, which is fixedly connected to the lower left side of the first sliding frame 101. The fixed frame 301 is fixedly installed with a first motor 302. The right output shaft of the first motor 302 is fixedly connected to a worm 303. The front side of the cam 108 is fixedly connected to a worm wheel 304, and the worm wheel 304 is meshed with the worm wheel 303.

[0037] First, place the stainless steel outer plate to be welded on the metering box frame 1131, then pull the second sliding frame 102, extend the second sliding frame 102 and the first sliding frame 101 to the same length as the metering box frame 1131, then manually adjust the height of the first sliding frame 101 and the second sliding frame 102 by observing the indicator bar 104, align the indicator bar 104 with the gap between the metering box frame 1131 and the stainless steel outer plate. At this time, the center of the welding gun 107 is also located at the gap between the metering box frame 1131 and the stainless steel outer plate. Finally, stick the second sliding frame 102 and the first sliding frame 101 on the metering box frame 1131 to be welded, and use this as the welding reference surface for the metering box to complete the preliminary positioning work.

[0038] Then the first motor 302 is started, and the first motor 302 rotates to drive the worm 303 and the worm wheel 304 to rotate, thereby driving the cam 108 to rotate clockwise. The cam 108 pushes the lifting block 109 to lift up, and the thrust applied to the lifting block 109 fits tightly with the friction block 103 to complete the fastening of the first sliding frame 101 and the second sliding frame 102, preventing the second sliding frame 102 from sliding. Then, during the rotation of the cam 108, the connecting rod 204 is pulled to move to the right. , thereby pulling the oil feeding rod 203 to move to the right, and the negative pressure generated causes the hydraulic fluid in the piston cylinder 110 to be sucked into the oil storage cylinder 202. The piston rod in the piston cylinder 110 is forced to retract, thereby pushing the clamping frame 111 and the rubber pad 112 to move to the right, so that the clamping frame 111 moves closer to the second sliding frame 102. When the pushing frame and the rubber pad 112 move, the positions of the two sides of the steel plate and the position between the metering box frame 1131 are calibrated to complete the final positioning. As the piston rod in the piston cylinder 110 continues to retract, Finally, the clamping frame 111 and the second sliding frame 102 will be firmly fixed on the metering box frame 1131. Then start the welding gun 107 to weld the metering box frame 1131 and the stainless steel outer plate. Push the slider 106 from left to right to achieve continuous welding. During the movement of the slider 106, it drives the spring 113, the lock 114 and the first torsion spring 115 to move to the right for welding. During the welding process, the lock 114 drives the rubber wheel 116 to contact the side wall of the metering box frame. Then it rolls to the right, and when the slider 106 reaches the rightmost side, the welding is completed. If the first sliding frame 101 and the second sliding frame 102 loosen and slide down during the welding process, the rubber wheel 116 rotates upward due to the friction with the side wall of the metering box frame 1131, and the torsion spring 115 is deformed under the force, thereby driving the lock 114 to rotate counterclockwise, unlocking the welding gun 107, and then the spring 113 is deformed and reset, driving the welding gun 107 to move quickly to the front side to disengage and avoid the welding position in time. In summary, through the movement and adjustment of the first sliding frame 101 and the second sliding frame 102, it is possible to flexibly adjust according to the length of the metering box frame 1131 while being portable, so as to adapt to metering boxes of different lengths. Subsequently, high-quality welding is achieved through the cooperation of the welding gun 107 and the slider 106, and the consistency of the weld is ensured. Through the cooperation of the lifting block 109 and the clamping frame 111, the first sliding frame and the second sliding frame are firmly fixed on the metering box frame 1131, and the first sliding frame 101 and the second sliding frame 102 are prevented from shifting during the welding process, thereby ensuring the quality of welding. Through the cooperation of the lock buckle 114 and the welding gun 107, when the first sliding frame 101 and the second sliding frame 102 loosen and slide down, the welding gun 107 is automatically driven to quickly leave the welding position.

[0039] Example 2: Based on Example 1, Figure 1 、 Figure 9and Figure 10 As shown, it also includes a second motor 401, which is fixedly installed on the upper left side of the first sliding frame 101, and a tensioning rod 402 is connected to the top left side of the first sliding frame 101. A second torsion spring 403 is fixedly connected between the tensioning rod 402 and the first sliding frame 101, and a wire pulley 404 is fixedly installed on the front side of the output shaft of the second motor 401. There are at least three wire pulleys 404, and the other two wire pulleys 404 are respectively connected to one side of the second sliding frame 102 and the tensioning rod 402. A pull rope 405 is sleeved between the at least three wire pulleys 404, and the pull rope 405 is fixed to the upper part of the slider 106 in a through-type manner. A contact switch 406 is fixedly installed on the right side of the second sliding frame 102, and the contact switch 406 is electrically connected to the second motor 401 through a control module for controlling the second motor 401 to stop.

[0040] In order to enable the welding gun 107 to weld adaptively after the length of the first sliding frame 101 and the second sliding frame 102 are adjusted, the specific operation is as follows: when the second sliding frame 102 is pulled to adjust the length and distance with the first sliding frame 101, the wire wheel 404 located on the right side of the second sliding frame 102 is driven to swing to the right, and the wire wheel 404 pulls the pull rope 405 to deform, driving the tensioning rod 402 to rotate clockwise for adjustment, and the second torsion spring 403 is deformed under the force, so that the pull rope 405 is deformed while always keeping it taut. After the second sliding frame 102 and the first sliding frame 101 are extended to the desired position and fixed, the second motor 401 is then started, and the second motor 401 drives the wire wheel 404 located at the output shaft to rotate, thereby driving The pull rope 405 rotates, and when the pull rope 405 rotates, it drives the slider 106 and the welding gun 107 to move to the right, and automatically welds the weld between the metering box frame 1131 and the stainless steel outer plate. When the slider 106 and the welding gun 107 reach the contact switch 406 on the right side of the second sliding frame 102, the contact switch 406 is forced to send an electrical signal. After receiving the electrical signal, the control module controls the second motor 401 to stop and completes the automatic welding work. In summary, through the cooperation of the tensioning rod 402 and the second torsion spring 403, it is possible to automatically adjust adaptively according to the moving distance between the first sliding frame 101 and the second sliding frame 102, so that the pull rope 405 is always in a taut state, thereby allowing the welding gun 107 to adaptively weld the metering box.

[0041] Example 3: Based on Example 2, Figure 1 、 Figure 2 、 Figure 11 and 12As shown, it also includes a screw 501, which is threadedly connected to the second sliding frame 102 and the top side of the clamping frame 111 respectively. The first adjusting frame 502 is slidably connected to the right side of the clamping frame 111, and the first adjusting frame 502 is connected to the screw 501 set on the clamping frame 111. The second adjusting frame 503 is slidably connected to the right side of the second sliding frame 102, and the second adjusting frame 503 is connected to the screw 501 set on the second sliding frame 102. The second adjusting frame 503 is slidably matched with the first adjusting frame 502 to tighten the metering box frame 1131 and the stainless steel outer plate.

[0042] After the second sliding frame 102 and the first sliding frame 101 are opened, the second adjusting frame 503 moves synchronously with the second sliding frame 102, so that the relative position of the second adjusting frame 503 and the first adjusting frame 502 changes and extends. After the clamping frame 111 and the second sliding frame 102 fasten the metering box frame 1131 and the stainless steel outer plate, the screws 501 on both sides are then twisted. The screws 501 on both sides drive the first adjusting frame 502 and the second adjusting frame 503 to descend synchronously, pressing the stainless steel outer plate and the metering box frame 1131 until the welding is completed. In summary, through the cooperation of the second adjusting frame 503 and the screw 501, the stainless steel outer plate and the metering box frame 1131 are pressed, preventing the weld between the stainless steel plate and the metering box frame 1131 from being too large and causing a cold weld.

[0043] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A welding device for processing an electric energy meter box, characterized in that: The invention comprises a first sliding frame (101), the first sliding frame (101) is slidably connected to the second sliding frame (102), the first sliding frame (101) and the second sliding frame (102) are both fixedly connected with a friction block (103), the second sliding frame (102) is fixedly connected with an indicator bar (104) on a side away from the first sliding frame (101), the first sliding frame (101) and the second sliding frame (102) are both fixedly connected with a guide rail (105), a slider (106) is slidably connected between the first sliding frame (101) and the second sliding frame (102), the slider (106) is slidably connected to the guide rail (105), a welding gun (107) is slidably mounted on the slider (106), and the first A cam (108) is connected to one side of the sliding frame (101) adjacent to the friction block (103); a lifting block (109) is slidably connected to one side of the first sliding frame (101) adjacent to the cam (108) for limiting the second sliding frame (102); the lifting block (109) is squeezed and matched with the cam (108) to fasten the first sliding frame (101) and the second sliding frame (102); a piston cylinder (110) is fixedly connected to one side of the first sliding frame (101) away from the second sliding frame (102); a clamping frame (111) is fixedly connected to the piston rod of the piston cylinder (110); and an unlocking component for welding detachment is provided on the right side of the slider (106); The unlocking assembly includes a lock buckle (114), the lock buckle (114) is connected to one side of the slider (106), one side of the lock buckle (114) is clamped with the welding gun (107), a first torsion spring (115) is sleeved between the lock buckle (114) and the slider (106), a rubber wheel (116) is transferred to the side of the lock buckle (114) away from the welding gun (107), and a spring (113) is sleeved between the slider (106) and the welding gun (107).

2. The electric energy meter box processing and welding device according to claim 1, characterized in that: It also includes a rubber pad (112), which is respectively fixed to one side of the clamping frame (111) and the left side of the rightmost part of the second sliding frame (2).

3. The electric energy meter box processing and welding device according to claim 2, characterized in that: The guide rails (105) mounted on the first sliding frame (101) and the second sliding frame (102) are located on the same side.

4. The electric energy meter box processing and welding device according to claim 3, characterized in that: The height of the indicator bar (104) is the same as the center height of the welding gun (107).

5. The electric energy meter box processing and welding device according to claim 4, characterized in that: The hard oil pipe (201) is fixedly connected to the first sliding frame (101), the hard oil pipe (201) is connected to the piston cylinder (110), and an oil storage cylinder (202) is fixedly connected to the side of the hard oil pipe (201) away from the clamping frame (111). The oil storage cylinder (202) is fixedly connected to the first sliding frame (101), the oil storage cylinder (202) is filled with hydraulic oil, and an oil delivery rod (203) for driving the flow of hydraulic oil is slidably connected to the oil storage cylinder (202), and a connecting rod (204) is connected between the oil delivery rod (203) and the cam (108).

6. The electric energy meter box processing and welding device according to claim 5, characterized in that: The device further comprises a fixed frame (301), the fixed frame (301) being fixedly connected to a side of the first sliding frame (101) adjacent to the oil storage cylinder (202), the fixed frame (301) being fixedly mounted with a first motor (302), the output shaft of the first motor (302) being fixedly connected with a worm (303), the cam (108) being fixedly connected with a worm wheel (304), and the worm wheel (304) being meshed with the worm wheel (303).

7. The electric energy meter box processing and welding device according to claim 6, characterized in that: The second motor (401) is fixedly mounted on a side of the first sliding frame (101) close to the initial position of the slider (106). The first sliding frame (101) is connected to a tensioning rod (402). A second torsion spring (403) is fixedly connected between the tensioning rod (402) and the first sliding frame (101). A wire wheel (404) is fixedly mounted on the output shaft of the second motor (401). The number of the wire wheels (404) is at least three, and the other two wire wheels (404) are fixed to the output shaft of the second motor (401). ) are respectively connected to one side of the second sliding frame (102) and the tensioning rod (402), a pull rope (405) is sleeved between at least three wire wheels (404), the pull rope (405) is fixedly connected to the slider (106), and a contact switch (406) is fixedly installed on the side of the second sliding frame (102) away from the first sliding frame (101), and the contact switch (406) is electrically connected to the second motor (401) through a control module for controlling the second motor (401) to stop.

8. The electric energy meter box processing and welding device according to claim 7, characterized in that: The invention also includes a screw rod (501), which is respectively threadedly connected to the second sliding frame (102) and one side of the clamping frame (111), and the clamping frame (111) is slidably connected to the first adjustment frame (502), and the first adjustment frame (502) is connected to the screw rod (501) provided on the clamping frame (111). The second sliding frame (102) is slidably connected to the side away from the clamping frame (111) with the second adjustment frame (503), and the second adjustment frame (503) is connected to the screw rod (501) provided on the second sliding frame (102). The second adjustment frame (503) is slidably matched with the first adjustment frame (502) for pressing the metering box frame (1131) and the stainless steel outer plate.

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