Chemical tank plate rolling and welding machine

Abstract

The present application relates to the technical field of tank welding, in particular to a chemical tank plate rolling welding machine, which comprises a bottom plate, the upper side of the bottom plate is fixed with a supporting plate, the upper side of the supporting plate is provided with a cross beam, and further comprises a pressing driving mechanism arranged at the position between the bottom plate and the cross beam. Through the welding positioning mechanism, the inside joint of the winding drum to be welded can be pressed, the joints are aligned, misalignment at the joints is prevented, the winding drum as a whole can be fixed, the stability during welding is improved, when the joints of the winding drum are welded, a certain pressing force can be maintained at the joints, after the welding of a joint is completed, the joint can be pressed in time, and the deformation of the joint caused by the influence of thermal expansion and cold contraction is effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of tank welding technology, and in particular to a welding machine for rolling plates of chemical tanks. Background Technology

[0002] In the chemical production process, a large number of tanks are needed for producing chemical products or storing chemical raw materials. The specific production process of chemical tanks is as follows: First, the rolled plate to be welded is bent and the two ends are welded together to form a cylindrical tank wall; then, tank end caps are welded to both ends of the tank wall; after grinding the weld seams, the chemical tank is formed.

[0003] A search revealed Chinese patent CN112705641A, which discloses a chemical tank plate rolling welding machine, including a frame with a first motor mounted on it; two extrusion rollers with an eccentric rotating shaft and a gear meshing with a rack; pressure claws on the extrusion rollers; a pull rod connected to one end of a pressing tube, which is connected to a frame with a cam mounted inside the frame and fitted onto the output shaft of the first motor; a welding torch; and a notch in the pressing tube with one end of a partition plate extending from the notch and the other end movably connected to the pressing tube.

[0004] Based on the above search and combined with the actual problems, it was found that the existing welding equipment for welding coils cannot press the joint of the coil tightly, which causes the joint to be misaligned due to thermal expansion deformation or vibration during welding, affecting the normal welding process. Moreover, when welding large tank coils, the local heating is greater, and the internal stress of the weld seam can easily cause deformation in local positions, affecting the welding quality of the entire workpiece. Summary of the Invention

[0005] The purpose of this invention is to provide a welding machine for chemical tank rolls to solve the problems mentioned in the background art.

[0006] The technical solution of the present invention is: a chemical tank plate rolling welding machine, including a base plate, a support plate fixed on the upper side of the base plate, a crossbeam arranged above the support plate, and further including: a pressing drive mechanism, the pressing drive mechanism being arranged between the base plate and the crossbeam; a welding positioning mechanism, the welding positioning mechanism being arranged outside the crossbeam; the pressing drive mechanism includes two vertical plates fixed to one upper end of the base plate, two connecting shafts rotatably connected between the two vertical plates, two connecting rods symmetrically fixed at both ends of the outer sides of the two connecting shafts, a fixed plate rotatably connected to one end of the four connecting rods, a rocker arm fixed at one end of one of the connecting shafts on one side, and a hydraulic rod rotatably connected to one side of one of the vertical plates, the telescopic end of the hydraulic rod being rotatably connected to one end of the rocker arm.

[0007] Preferably, the welding positioning mechanism includes a servo motor mounted on one side of a fixed plate, grooves formed on both sides of a crossbeam, and multiple sliding rods slidably inserted into the crossbeam at equal intervals. A lead screw extending into one of the grooves is fixed to the drive end of the servo motor. A lead screw slider is threadedly connected to the outer side of the lead screw, and the lead screw slider is slidably connected to the inner side of the groove. A mounting plate is fixed to one side of the lead screw slider. A welding machine is mounted on one side of the mounting plate, and a welding torch is mounted at the lower end of the mounting plate. A sliding shaft is mounted at the upper end of the mounting plate. The welding torch and the welding machine are electrically connected. A groove plate is fixed to the upper end of each of the multiple sliding rods. A guide groove is formed on one side of each of the multiple groove plates. A pressure block is fixed to the lower end of each of the multiple sliding rods. A compression spring sleeved on the outer side of each of the multiple pressure blocks is connected to the upper side of each pressure block. A cooling mechanism is provided between the multiple pressure blocks, the base plate, and the crossbeam. A weld tapping mechanism is provided inside each of the multiple pressure blocks.

[0008] Preferably, the guide groove includes a horizontal slide groove and two symmetrically arranged oblique slide grooves, with one end of each of the two oblique slide grooves smoothly connected to both ends of the horizontal slide groove.

[0009] Preferably, the weld tapping mechanism includes a cavity located in the middle of the pressure block and a variable frequency motor installed on one end of the outer side of the pressure block. The drive end of the variable frequency motor is fixed with a transmission shaft extending to the inner side of the cavity. Three rotating wheels are fixed at equal intervals on the outer side of the transmission shaft. A strong magnet is fixed on one side of each of the three rotating wheels. An inner horizontal plate is fixed on the inner side of the cavity. A guide post is slidably inserted into the inner horizontal plate at the position corresponding to each rotating wheel. A limit plate is fixed to the upper end of each of the three guide posts, and a tapping block is fixed to the lower end of each of the three guide posts. A tapping spring sleeved on the outer side of each of the three tapping blocks is connected to the upper side of each of the three tapping blocks.

[0010] Preferably, the cooling mechanism includes a chiller installed on one upper end of the base plate, an outlet pipe and a return pipe fixed on the upper side of the crossbeam, two water cavities opened on both sides inside each pressure block, and four connectors inserted at both ends of each pressure block. The outlet and return ports of the chiller are respectively connected to one end of the outlet pipe and the return pipe. One end of each of the connectors is connected to the inner side of the corresponding water cavity, and the other end of each pair of adjacent connectors is connected to a manifold. A switch pipe is inserted on the upper side of each of the manifolds. The multiple switch pipes located at one end of each pressure block are connected to the inner side of the outlet pipe through a connecting hose, and the multiple switch pipes located at the other end of each pressure block are connected to the inner side of the return pipe through a connecting hose. A switch mechanism is provided on the inner side of each of the multiple switch pipes.

[0011] Preferably, the switching mechanism includes a pull rod slidably inserted into the inside of the switching tube and a fixing ring fixed to the inside of the switching tube. A baffle is fixed to the lower end of the pull rod, and a top plate is fixed to the upper end of the pull rod. A return spring sleeved on the outside of the pull rod is connected to the lower side of the top plate.

[0012] Preferably, the two adjacent rotating wheels are at a 120° angle to each other.

[0013] Preferably, the limiting plate is made of iron.

[0014] Preferably, the lower surface of the plurality of pressure blocks and the upper surface of the tray are both arc-shaped, and the curvature of the arc-shaped structure is equal to the curvature of the tank body roll plate.

[0015] Preferably, a plurality of rollers are rotatably connected to the other end of the upper side of the base plate.

[0016] The present invention provides an improved welding machine for chemical tank bodies, which, compared with the prior art, has the following improvements and advantages: Firstly, this invention uses a welding positioning mechanism to press the inner seam of the roll to be welded, ensuring seam alignment and preventing misalignment. It also fixes the roll as a whole, improving stability during welding. Furthermore, it maintains a certain pressure at the seam during welding, and after welding a section of the seam, it can promptly press the weld section, effectively reducing deformation caused by thermal expansion and contraction.

[0017] Secondly, the present invention can quickly transfer the heat near the weld to the cooling water inside the water cavity through the cooling mechanism, thereby achieving rapid heat dissipation and cooling of the weld and reducing the amount of deformation during cylinder welding.

[0018] Thirdly, the present invention uses a weld tapping mechanism to tap the completed weld, which can effectively eliminate the internal stress of the weld, prevent cracks from forming, enhance the density of the weld, and further reduce the deformation at the weld. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a first-view structural diagram of the present invention; Figure 2This is a schematic diagram of the second perspective structure of the present invention; Figure 3 For the present invention Figure 1 Enlarged structural diagram at point A; Figure 4 For the present invention Figure 1 Enlarged structural diagram at point B; Figure 5 This is a schematic diagram of the internal structure of the pressure block in this invention; Figure 6 This is a schematic diagram of the slide plate of the present invention; Figure 7 For the present invention Figure 5 Enlarged structural diagram at point C; Figure 8 For the present invention Figure 5 Enlarged structural diagram at point D; Figure 9 This is a structural schematic diagram of the welding state of the present invention.

[0021] Figure label: 1. Base plate; 2. Support plate; 3. Crossbeam; 4. Roller; 101. Vertical plate; 102. Connecting shaft; 103. Connecting rod; 104. Fixing plate; 105. Rocker arm; 106. Hydraulic rod; 201. Slide groove; 202. Servo motor; 203. Lead screw; 204. Lead screw slider; 205. Mounting plate; 206. Welding machine; 207. Welding torch; 208. Slide shaft; 209. Sliding rod; 210. Pressure block; 211. Compression spring; 212. Slide groove plate; 213. Guide groove; 2131. Horizontal slide groove; 2132. Inclined... 301. Slide groove; 302. Cavity; 303. Inner horizontal plate; 304. Drive shaft; 305. Variable frequency motor; 306. Rotating wheel; 307. Strong magnet; 308. Guide post; 309. Limiting plate; 310. Striking spring; 401. Striking block; 402. Chiller; 403. Outlet pipe; 404. Return pipe; 405. Connector; 406. Manifold; 407. Switch pipe; 408. Connecting hose; 409. Fixing ring; 410. Pull rod; 411. Baffle; 412. Top plate; 413. Return spring. Detailed Implementation

[0022] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] This invention provides an improved welding machine for chemical tank rolls. The technical solution of this invention is as follows: like Figures 1 to 9 As shown, this embodiment of the invention provides a chemical tank plate rolling welding machine, including a base plate 1, a support plate 2 fixed on the upper side of the base plate 1, a crossbeam 3 arranged above the support plate 2, and further including: a pressing drive mechanism, which is arranged between the base plate 1 and the crossbeam 3; and a welding positioning mechanism, which is arranged outside the crossbeam 3. The pressing drive mechanism includes two upright plates 101 fixed to one end of the upper side of the base plate 1, two connecting shafts 102 rotatably connected between the two upright plates 101, two connecting rods 103 symmetrically fixed at both ends of the outer sides of the two connecting shafts 102, a fixing plate 104 rotatably connected to one end of the four connecting rods 103, a rocker arm 105 fixed at one end of one of the connecting shafts 102 at one side, and a hydraulic rod 106 rotatably connected to one side of one of the upright plates 101, with the telescopic end of the hydraulic rod 106 rotatably connected to one end of the rocker arm 105.

[0024] Furthermore, the welding positioning mechanism includes a servo motor 202 mounted on one side of the fixed plate 104, slide grooves 201 formed on both sides of the crossbeam 3, and multiple sliding rods 209 slidably inserted into the crossbeam 3 at equal intervals. The drive end of the servo motor 202 is fixed with a lead screw 203 extending into the inner side of one of the slide grooves 201. A lead screw slider 204 is threadedly connected to the outer side of the lead screw 203. The lead screw slider 204 is slidably connected to the inner side of the slide groove 201, and a mounting plate 205 is fixed to one side of the lead screw slider 204. A welding machine 206 is mounted on one side of the mounting plate 205. A welding torch 207 is installed at the lower end of the mounting plate 205, and a sliding shaft 208 is installed at the upper end of the mounting plate 205. The welding torch 207 and the welding machine 206 are electrically connected. A sliding groove plate 212 is fixed at the upper end of each of the sliding rods 209. A guide groove 213 is opened on one side of each of the sliding groove plates 212. A pressure block 210 is fixed at the lower end of each of the sliding rods 209. A compression spring 211 sleeved on the outside of the sliding rod 209 is connected to the upper side of each of the pressure blocks 210. A cooling mechanism is provided between the pressure blocks 210, the base plate 1, and the crossbeam 3. A weld tapping mechanism is provided inside each of the pressure blocks 210. The welding positioning mechanism can fix the entire drum and maintain its stability during welding. At the same time, when welding the drum joints, a certain pressure can be maintained at the joints. After a section of the joint is welded, the weld section can be pressed tightly in time, effectively reducing the deformation of the joint caused by thermal expansion and contraction.

[0025] Furthermore, the guide groove 213 includes a horizontal slide groove 2131 and two symmetrically arranged oblique slide grooves 2132, one end of each of the two oblique slide grooves 2132 being smoothly connected to both ends of the horizontal slide groove 2131. The sliding connection between the inclined slide groove 2132 and the slide shaft 208 enables the pressure block 210 to move up and down, alternately pressing and fixing the weld and joint.

[0026] Furthermore, the weld tapping mechanism includes a cavity 301 located in the middle section inside the pressure block 210 and a variable frequency motor 304 installed on one side of the pressure block 210. The drive end of the variable frequency motor 304 is fixed with a transmission shaft 303 extending to the inside of the cavity 301. Three rotating wheels 305 are fixed at equal intervals on the outside of the transmission shaft 303. A strong magnet 306 is fixed on one side of each of the three rotating wheels 305. An inner horizontal plate 302 is fixed on the inside of the cavity 301. A guide post 307 is slidably inserted inside the inner horizontal plate 302 corresponding to the position of each rotating wheel 305. A limit plate 308 is fixed at the upper end of each of the three guide posts 307, and a tapping block 310 is fixed at the lower end of each of the three guide posts 307. A tapping spring 309 sleeved on the outside of the guide post 307 is connected to the upper side of each of the three tapping blocks 310. By using a weld tapping mechanism to tap the completed weld, the internal stress of the weld can be effectively eliminated, cracks can be prevented, the density of the weld can be enhanced, and the deformation at the weld can be further reduced.

[0027] Furthermore, the cooling mechanism includes a chiller 401 mounted on one side of the base plate 1, an outlet pipe 402 and a return pipe 403 fixed to the upper side of the crossbeam 3, two water cavities 404 formed on both sides inside each pressure block 210, and four connectors 405 inserted at both ends of each pressure block 210. The outlet and return port of the chiller 401 are respectively connected to one end of the outlet pipe 402 and the return pipe 403, and one end of each connector 405 is respectively connected to the inner side of the corresponding water cavity 404. The two adjacent connectors 405 are connected to the other end of a manifold 406. A switch pipe 407 is inserted on the upper side of each manifold 406. The switch pipes 407 located at one end of each pressure block 210 are connected to the inside of the outlet pipe 402 through a connecting hose 408. The switch pipes 407 located at the other end of each pressure block 210 are connected to the inside of the return pipe 403 through a connecting hose 408. A switch mechanism is provided on the inside of each switch pipe 407. The cooling mechanism can quickly transfer heat from the vicinity of the weld to the cooling water inside the water cavity 404, achieving rapid heat dissipation and cooling of the weld, thus reducing the amount of deformation during drum welding.

[0028] Furthermore, the switching mechanism includes a pull rod 410 slidably inserted inside the switching tube 407 and a fixing ring 409 fixed inside the switching tube 407. A baffle 411 is fixed at the lower end of the pull rod 410, and a top plate 412 is fixed at the upper end of the pull rod 410. A return spring 413 sleeved on the outside of the pull rod 410 is connected to the lower side of the top plate 412. By means of the on / off mechanism, during the upward movement of the pressure block 210, the water chamber 404 is connected to the water outlet pipe 402 and the water return pipe 403, so as to circulate the cooling water.

[0029] Furthermore, the two adjacent rotating wheels 305 are at a 120° angle to each other; It can drive three striking blocks 310 to alternately strike the weld, which can evenly eliminate the internal stress of the weld and improve the density of the weld.

[0030] Furthermore, the limit plate 308 is made of iron; It can move upward under the magnetic force of the strong magnet 306, compressing and storing energy in the striking spring 309.

[0031] Furthermore, the lower surfaces of the multiple pressure blocks 210 and the upper surfaces of the support plate 2 are all arc-shaped, and the curvature of the arc-shaped structure is equal to the curvature of the tank body roll plate. It can better fit the inside and outside of the tank drum, preventing the drum from swinging and improving the stability of the fixation.

[0032] Furthermore, multiple rollers 4 are rotatably connected to the other end of the upper side of the base plate 1; Roller 4 facilitates loading and unloading operations on the tank drum.

[0033] Working principle: In use, the rolled plate, formed into a cylindrical structure, is placed on the upper side of the support plate 2, so that the crossbeam 3 passes through the inner side of the rolled plate. Then, the extension end of the hydraulic rod 106 of the pressing drive mechanism is retracted, causing the rocker arm 105 to rotate clockwise by a certain angle. The rocker arm 105 drives the upper connecting shaft 102 to rotate clockwise. The upper connecting shaft 102 drives the two connecting rods 103 on its outer side to rotate clockwise. According to the principle of the parallelogram linkage mechanism, the two upper connecting rods 103 can drive the two lower connecting rods 103 to rotate synchronously through the fixed plate 104. At the same time, the fixed plate 104 moves up and down along an arc trajectory, thereby driving the crossbeam 3 to move downward. The connecting rods 103 drive the fixed plate 104 to move up and down, thereby driving the crossbeam 3 to move downward. 3. Vertical movement provides better load-bearing capacity and greater stability when moving the crossbeam 3. Compared to vertical vertical movement, it effectively avoids jamming and ensures that the crossbeam 3 remains at a horizontal angle. When the connecting rod 103 rotates to a horizontal angle, the multiple pressure blocks 210 below the crossbeam 3 press against the inner joint of the drum. The crossbeam 3, along with the multiple pressure blocks 210 below it, presses against the inner joint of the drum, tightening the joint to be welded and improving alignment. It also fixes the entire drum, improving stability during welding. Then, the servo motor 202 is controlled to drive the lead screw 203 to rotate. The rotation of the lead screw 203, through thread engagement, drives the lead screw slider 204 to move inside the slide groove 201, thereby moving the mounting plate. 205 and welding machine 206 move along the direction of crossbeam 3, and welding torch 207 moves accordingly to weld the joint of the drum from the inside. When mounting plate 205 moves welding torch 207 to one end of one of the pressure blocks 210, it simultaneously moves sliding shaft 208 to the inside of guide groove 213 directly above this pressure block 210. Since guide groove 213 includes horizontal sliding groove 2131 and two symmetrically arranged oblique sliding grooves 2132, one end of the two oblique sliding grooves 2132 is smoothly connected to the two ends of horizontal sliding groove 2131. Through the sliding connection between sliding shaft 208 and guide groove 213, sliding plate 212 and sliding rod 209 can be moved upward. Sliding rod 209 moves pressure block 210 upward, thereby allowing one of the pressure blocks 210 to move upward. The roller is lifted to separate it from the seam. At this time, the sliding shaft 208 moves to the inside of the horizontal sliding groove 2131, and the welding torch 207 moves to the seam located below the pressure block 210 to weld this section of the seam. After this section of the seam is welded, the sliding shaft 208 moves to the inside of an inclined sliding groove 2132 at the other end. Through the sliding connection between the sliding shaft 208 and the inclined sliding groove 2132, the pressure block 210 is driven to move down and reset, so that the pressure block 210 is pressed again at the position of the section of the seam that was just welded. At this time, the welding torch 207 continues to move to the position of the next pressure block 210 to weld the remaining seam. Through the welding positioning mechanism, the entire roller can be fixed to maintain its stability during welding. At the same time, when welding the seam of the roller,A certain amount of pressure can be maintained at the joint. After a section of the joint is welded, the weld section can be tightened in time to effectively reduce the deformation of the joint caused by thermal expansion and contraction. When one of the pressure blocks 210 moves upward, the two top plates 412 at both ends of the pressure block 210 abut against the lower side of the crossbeam 3. Under the pressure, the pull rod 410 and the baffle 411 are pushed downward, causing the baffle 411 and the fixing ring 409 to separate, so that the switch pipe 407 is connected to the water cavity 404, and the cooling water inside the outlet pipe 402 flows into the switch pipe 407 through the connecting hose 408. The heat flows from the side, then through the manifold 406 and connector 405 into the two water cavities 404 on both sides of the pressure block 210. Because the lower surface of the pull rod 410 contacts the weld and the drums on both sides of the weld, heat near the weld can be quickly transferred to the cooling water inside the water cavities 404, achieving rapid heat dissipation and cooling of the weld, causing the temperature to drop rapidly and reducing deformation during drum welding. When the pressure block 210 moves upward again, the two disconnect pipes 407 at both ends are simultaneously reconnected to the inside of the water cavities 404. Through the above principle, the external cooling water... Cooling water is introduced into the water chamber 404, allowing the high-temperature cooling water that has absorbed heat inside the water chamber 404 to flow back to the return water pipe 403 through the on / off pipe 407 at the other end, thus achieving continuous circulation of cooling water. After the pressure block 210 is pressed against the upper side of the weld, the variable frequency motor 304 controlling the weld striking mechanism drives the drive shaft 303 to rotate. The drive shaft 303 drives the three rotating wheels 305 on its outer side to rotate. When the strong magnet 306 on one side of the rotating wheel 305 rotates to the lowest position, the strong magnet 306 is closest to the limiting plate 308, which can attract the limiting plate 308 upward. This causes the striking block 310 to move upwards while simultaneously compressing the striking spring 309. As the rotating wheel 305 rotates, the strong magnet 306 separates from the limiting plate 308, and the striking block 310 impacts downwards under the elastic force of the striking spring 309. Since adjacent rotating wheels 305 are at a 120° angle, the three striking blocks 310 can alternately strike the weld. Striking the completed weld effectively eliminates internal stress, prevents crack formation, enhances weld density, and further reduces weld deformation.

[0034] The foregoing description enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A chemical tank plate rolling and welding machine, comprising a base plate (1), a support plate (2) fixed on the upper side of the base plate (1), and a crossbeam (3) disposed above the support plate (2), characterized in that, Also includes; A pressing drive mechanism is provided between the base plate (1) and the crossbeam (3); A welding positioning mechanism is provided on the outside of the crossbeam (3); The pressing drive mechanism includes two upright plates (101) fixed to one end of the upper side of the base plate (1). Two connecting shafts (102) are rotatably connected between the two upright plates (101). Two connecting rods (103) are symmetrically fixed at both ends of the outer sides of the two connecting shafts (102). A fixed plate (104) is rotatably connected to one end of the four connecting rods (103). A rocker arm (105) is fixed at one end of one of the connecting shafts (102) at one side. A hydraulic rod (106) is rotatably connected to one side of one of the upright plates (101). The telescopic end of the hydraulic rod (106) is rotatably connected to one end of the rocker arm (105). The welding positioning mechanism includes a servo motor (202) mounted on one side of a fixed plate (104), a slide groove (201) opened on both sides of a crossbeam (3), and multiple sliding rods (209) slidably inserted into the crossbeam (3) at equal intervals. The drive end of the servo motor (202) is fixed with a lead screw (203) extending to the inside of one of the slide grooves (201). The outer side of the lead screw (203) is connected to a lead screw slider (204) by a thread. The lead screw slider (204) is slidably connected to the inside of the slide groove (201), and a mounting plate (205) is fixed on one side of the lead screw slider (204). A welding machine (206) is mounted on one side of the mounting plate (205), and the mounting plate (205) has a mounting plate (205) with a mounting function. A welding torch (207) is installed at the lower end, and a sliding shaft (208) is installed at the upper end of the mounting plate (205). The welding torch (207) and the welding machine (206) are electrically connected. A sliding groove plate (212) is fixed at the upper end of each of the sliding rods (209). A guide groove (213) is opened on one side of each of the sliding groove plates (212). A pressure block (210) is fixed at the lower end of each of the sliding rods (209). A compression spring (211) sleeved on the outside of the sliding rod (209) is connected to the upper side of each of the pressure blocks (210). A cooling mechanism is provided between the pressure blocks (210) and the base plate (1) and the crossbeam (3). A weld tapping mechanism is provided inside each of the pressure blocks (210). The guide groove (213) includes a horizontal slide groove (2131) and two symmetrically arranged oblique slide grooves (2132), one end of each of the two oblique slide grooves (2132) being smoothly connected to both ends of the horizontal slide groove (2131).

2. The chemical tank plate rolling and welding machine according to claim 1, characterized in that: The weld tapping mechanism includes a cavity (301) located in the middle of the pressure block (210) and a variable frequency motor (304) installed on one side of the pressure block (210). The drive end of the variable frequency motor (304) is fixed with a transmission shaft (303) extending to the inside of the cavity (301). Three rotating wheels (305) are fixed at equal intervals on the outside of the transmission shaft (303). A strong magnet (306) is fixed on one side of each of the three rotating wheels (305). An inner horizontal plate (302) is fixed inside the cavity (301). A guide post (307) is slidably inserted inside the inner horizontal plate (302) at the position corresponding to each rotating wheel (305). A limit plate (308) is fixed at the upper end of each of the three guide posts (307), and a striking block (310) is fixed at the lower end of each of the three guide posts (307). A striking spring (309) sleeved on the outside of the guide post (307) is connected to the upper side of each of the three striking blocks (310).

3. The chemical tank plate rolling and welding machine according to claim 1, characterized in that: The cooling mechanism includes a chiller (401) installed on one side of the base plate (1), an outlet pipe (402) and a return pipe (403) fixed on the upper side of the crossbeam (3), two water chambers (404) opened on both sides inside each pressure block (210), and four connectors (405) inserted at both ends of each pressure block (210). The outlet and return port of the chiller (401) are respectively connected to one end of the outlet pipe (402) and the return pipe (403), and one end of each of the connectors (405) is respectively connected to the inner side of the water chamber (404) at the corresponding position. The two adjacent connectors (405) are connected to a manifold (406) at the other end. Each manifold (406) has a switch pipe (407) inserted on its upper side. Each switch pipe (407) located at one end of each pressure block (210) is connected to the inside of the outlet pipe (402) through a connecting hose (408). Each switch pipe (407) located at the other end of each pressure block (210) is connected to the inside of the return pipe (403) through a connecting hose (408). Each switch pipe (407) has a switch mechanism installed on its inner side.

4. The chemical tank plate rolling and welding machine according to claim 3, characterized in that: The switching mechanism includes a pull rod (410) slidably inserted inside the switching tube (407) and a fixing ring (409) fixed inside the switching tube (407). A baffle (411) is fixed at the lower end of the pull rod (410), and a top plate (412) is fixed at the upper end of the pull rod (410). A return spring (413) sleeved on the outside of the pull rod (410) is connected to the lower side of the top plate (412).

5. A chemical tank plate rolling and welding machine according to claim 2, characterized in that: The two adjacent rotating wheels (305) are at a 120° angle to each other.

6. A chemical tank plate rolling and welding machine according to claim 2, characterized in that: The limiting plate (308) is made of iron.

7. A chemical tank plate rolling and welding machine according to claim 1, characterized in that: The lower surfaces of the plurality of pressure blocks (210) and the upper surfaces of the tray (2) are all arc-shaped structures, and the curvature of the arc-shaped structure is equal to the curvature of the tank body roll plate.

8. A chemical tank plate rolling and welding machine according to claim 1, characterized in that: Multiple rollers (4) are rotatably connected to the other end of the upper side of the base plate (1).

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