Tinplate can edge rolling forming equipment

Abstract

The invention relates to the technical field of tinplate can machining, in particular to tinplate can edge rolling forming equipment which comprises a mounting frame, an electric actuator I and the like. And an electric actuator I is mounted on the mounting frame. The upper cover and the semi-circular ring are combined to form a complete cylinder, the tin can is cooperatively limited, after the top plates expand outwards and abut against the inner wall of the tin can, the tin can is driven to rotate along the inner side of the upper cover and the inner side of the semi-circular ring through rotation, and then all the top plates rotate to be matched with the upper cover and the semi-circular ring; according to the method, the tinplate can is shaped together, rounding treatment of the tinplate can is completed, the tinplate can is inflated through the guide pipe, pressure maintaining is conducted after the preset pressure value is reached, and the numerical value is recorded through the pressure gauge so as to detect the air tightness.

Description

Technical Field

[0001] The invention relates to the technical field of tinplate can processing, in particular to a tinplate can rolling forming device. Background Art

[0002] Based on existing technology, it has been found that in the existing tinplate can production process, the traditional rounding and shaping process has significant technical defects. When the tinplate can with a weld seam is mechanically rounded, the can body is prone to cracks at the weld seam during the tensile deformation process. Conventional equipment cannot detect this hidden damage in real time, and defective products are not removed in time, resulting in defective products flowing into subsequent processes, causing serious waste of resources. There is also a lack of a systematic detection mechanism for defects such as dents on the tank surface, making it difficult to ensure the overall quality of the final product. The expansion forming process is not effectively integrated with online quality inspection, resulting in a low degree of modularization of equipment functions and difficulty in achieving automated closed-loop control. Summary of the Invention

[0003] In order to overcome the shortcomings of the existing tinplate can production process, that is, the weld seams are prone to cracking and such damage cannot be detected in real time, the present invention provides a tinplate can rolling forming device.

[0004] The technical solution is: a tinplate can rolling forming device, including a mounting frame; also including an electric actuator I; the electric actuator I is installed on the mounting frame; the telescopic part of the electric actuator I is fixedly connected to the upper cover; a plurality of sliding rods are slidably connected to the upper cover; the mounting frame is fixedly connected to a fixed frame; a semicircular ring is fixedly connected to the fixed frame, and the inner sides of the upper cover and the semicircular ring are provided with a smooth coating; the semicircular ring is fixedly connected to all the sliding rods; an elastic member I is sleeved on the outside of each semicircular ring, one end of the elastic member I is fixedly connected to the upper cover, and the other end of the elastic member I is fixedly connected to the semicircular ring; the mounting frame is connected to an expansion component for shaping the tinplate can.

[0005] Furthermore, the expansion assembly includes a support frame fixed to the mounting frame; at least two electric actuators II are mounted on the support frame; the telescopic parts of all electric actuators II are commonly fixed to a disc I; a connecting frame is fixed to the side of disc I close to the electric actuator II; a motor is fixed to the connecting frame; the output shaft of the motor is fixed to a spline sleeve rotatably connected to the connecting frame; a spline shaft is slidably connected to the spline sleeve; at least two telescopic rods are fixed to disc I; a screw is fixed to the end of the spline shaft away from the spline sleeve; a sliding block is screwed to the screw; the sliding block is fixed to the telescopic parts of all telescopic rods; a connecting shaft is fixed to the end of the screw away from the spline shaft; a plurality of connecting rods are rotatably connected to the sliding block and the connecting shaft; all connecting rods on the same horizontal line are commonly rotatably connected to a top plate, and a rough coating is provided on the side of the top plate away from the connecting rod.

[0006] Furthermore, a heating wire for heating the tinplate can is provided in the top plate.

[0007] Furthermore, it also includes an infrared sensor; an infrared sensor for detecting dents on the surface of the tinplate can is installed on the outer side of the upper cover.

[0008] Furthermore, it also includes a sealing ring fixed on the disc I, and the sealing ring is located on the side of the disc I away from the connecting frame; the upper cover and the side of the semicircular ring close to the disc I are both provided with grooves that match the sealing ring.

[0009] Furthermore, it also includes a drive assembly connected to the mounting frame; a card slot is provided on the upper cover; an arc groove is provided on the semicircular ring; the drive assembly is connected to the disc II, and the drive assembly is used to drive the disc II to move; a seal is fixedly connected to the disc II; a conduit is fixedly connected to the disc II; and a pressure gauge is fixedly connected to and communicated with the conduit.

[0010] Furthermore, the sealing member and the sealing ring are both made of rubber.

[0011] Furthermore, an inclined portion for guiding the movement of the tinplate can is provided on the semicircular ring.

[0012] Furthermore, it also includes a marking system connected to the fixed frame; the marking system includes a fixed box fixed to the fixed frame; at least two electric actuators III are fixed to the fixed box; the telescopic parts of all electric actuators III are commonly fixed to a limit plate that is slidably connected to the fixed box.

[0013] Furthermore, the upper cross section of the limiting plate is configured to be triangular in shape.

[0014] The advantages and positive effects of the present invention are as follows: (1) a complete cylinder is formed by combining the upper cover and the semicircular ring, which cooperates to limit the position of the tinplate can. After the top plate expands outward and abuts against the inner wall of the tinplate can, the tinplate can is driven to rotate along the inner side of the upper cover and the inner side of the semicircular ring by rotation. Then, all the top plates rotate in coordination with the upper cover and the semicircular ring to jointly shape the tinplate can and complete the expansion process of the tinplate can.

[0015] (2) Inflate the tinplate can through the conduit, maintain the pressure after reaching the preset pressure value, and record the value through the pressure gauge to detect the air tightness, so as to know whether the weld of the tinplate can is cracked or damaged during the expansion process, so as to prevent the leaking tinplate can from flowing into the next process.

[0016] (3) The tinplate can is heated to 40°C by the electric heating wire in the top plate, and then the tinplate can is detected by the infrared sensor installed on the upper cover. Since the entire tinplate can is heated, the surface of the tinplate can has heat, and the temperature change of the tinplate can surface can be detected by the infrared sensor, thereby identifying the dents on the surface of the tinplate can and causing the tinplate can to rotate, thereby realizing the detection of the bulging quality of the tinplate can.

[0017] (4) By moving the limit plate upward to press against the weld on the tinplate can, all the top plates are rotated inside the tinplate can, so that all the top plates are rotated along the inner side of the tinplate can, and the tinplate can is shaped from the inside out, so that the inner wall of the tinplate can is smoother and flatter, thereby improving the quality of the tinplate can.

[0018] (5) The tinplate can is squeezed upward by the limit plate, so that a dent is formed on the surface of the tinplate can, thereby marking the tinplate cans that do not meet the airtightness requirements, so that the unqualified tinplate cans can be manually sorted out. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the tinplate can rolling forming equipment of the present invention; Figure 2 This is a schematic diagram of the installation positions of the slide bar, the fixing frame, the semicircular ring and the elastic member I of the tinplate can rolling forming equipment of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of a tinplate can of the tinplate can rolling forming equipment of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the expansion component of the tinplate can rolling forming equipment of the present invention; Figure 5 This is a schematic diagram of the installation positions of the screw, sliding block, connecting shaft, connecting rod and top plate of the tinplate can rolling forming equipment of the present invention; Figure 6 It is a combined sectional view of the upper cover, the fixing frame and the semicircular ring of the tinplate can rolling forming equipment of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the disc II, pressure gauge, seal and conduit assembly of the tinplate can rolling forming equipment of the present invention; Figure 8 It is a schematic diagram of the tinplate can shaping state of the tinplate can rolling forming equipment of the present invention; Figure 9 It is a schematic diagram of the three-dimensional structure of the marking system of the tinplate can rolling forming equipment of the present invention; Figure 10 This is a schematic diagram of the installation position of the limit plate of the tinplate can rolling forming equipment of the present invention.

[0020] Figure numbers: 1-mounting frame, 2-tinplate can, 21-weld, 201-electric actuator I, 202-upper cover, 2021-slot, 2022-infrared sensor, 203-slide rod, 204-fixing frame, 205-semicircular ring, 2051-arc groove, 2052-inclined part, 206-elastic member I, 207-support frame, 208-electric actuator II, 209-disc I, 2091-sealing ring, 210-connecting frame, 211 -Motor, 212-Spline sleeve, 213-Spline shaft, 214-Telescopic rod, 215-Screw rod, 216-Sliding block, 217-Connecting shaft, 218-Connecting rod, 219-Top plate, 301-Electric slide rail, 302-Electric slider, 303-Connecting plate, 304-Electric actuator IV, 305-Disc II, 306-Pressure gauge, 307-Seal, 308-Conduit, 401-Fixed box, 402-Electric actuator III, 403-Limiting plate. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0022] Example 1: A tinplate can rolling forming device, according to Figures 1-8 As shown, it includes a mounting frame 1; It also includes an electric actuator I201, an upper cover 202, a slide rod 203, a fixing frame 204, a semicircular ring 205, an elastic member I206 and an expansion assembly; an electric actuator I201 is installed on the mounting frame 1, and the electric actuator I201 is an electric push rod; the telescopic part of the electric actuator I201 is fixedly connected to the upper cover 202; each of the four rectangular corners of the upper cover 202 is slidably connected to a slide rod 203; a fixing frame 204 is fixedly connected to the mounting frame 1; a semicircular ring 205 is fixedly connected to the fixing frame 204; the semicircular ring 205 is fixedly connected to all the slide rods 203; an elastic member I206 is sleeved on the outside of each semicircular ring 205, and the elastic member I206 is a spring, one end of the elastic member I206 is fixedly connected to the upper cover 202, and the other end of the elastic member I206 is fixedly connected to the semicircular ring 205; an expansion assembly is connected to the mounting frame 1.

[0023] The expansion assembly includes a support frame 207, an electric actuator II 208, a disc I 209, a connecting frame 210, a motor 211, a spline sleeve 212, a spline shaft 213, a telescopic rod 214, a screw rod 215, a sliding block 216, a connecting shaft 217, a connecting rod 218 and a top plate 219; the mounting frame 1 is fixed with the support frame 207; two electric actuators II 208 are installed on the support frame 207, and the electric actuators II 208 are electric push rods; the telescopic parts of all electric actuators II 208 are fixed with a disc I 209; the side of the disc I 209 close to the electric actuator II 208 is fixed with the connecting frame 210; the connecting frame 210 is fixed with the motor 211 ; The output shaft of the motor 211 is fixedly connected to the spline sleeve 212; the spline sleeve 212 is rotatably connected to the connecting frame 210; the spline shaft 213 is slidably connected to the spline sleeve 212; two telescopic rods 214 are fixedly connected to the disc I 209; the end of the spline shaft 213 away from the spline sleeve 212 is fixedly connected to the screw rod 215; the sliding block 216 is screwed on the screw rod 215; the sliding block 216 is fixedly connected to the telescopic part of all telescopic rods 214; the end of the screw rod 215 away from the spline shaft 213 is fixedly connected to the connecting shaft 217; a number of connecting rods 218 are rotatably connected to the sliding block 216 and the connecting shaft 217; all the connecting rods 218 on the same horizontal line are rotatably connected to a top plate 219.

[0024] The inner sides of the upper cover 202 and the semicircular ring 205 are provided with a smooth coating, and the side of the top plate 219 away from the connecting rod 218 is provided with a rough coating to facilitate driving the tinplate can 2 to rotate.

[0025] An electric heating wire is provided inside the top plate 219 for heating the tinplate can 2 .

[0026] It also includes an infrared sensor 2022; an infrared sensor 2022 is installed on the outer side of the upper cover 202 for detecting the tinplate can 2.

[0027] It also includes a sealing ring 2091; the sealing ring 2091 is fixedly connected to the side of the disc I 209 away from the connecting frame 210; the upper cover 202 and the semi-circular ring 205 are both provided with grooves matching the sealing ring 2091 on the side close to the disc I 209.

[0028] It also includes a drive assembly, a disc II 305, a pressure gauge 306, a seal 307 and a conduit 308; a card slot 2021 is provided on the upper cover 202; an arcuate groove 2051 is provided on the semicircular ring 205; the drive assembly is connected to the mounting frame 1; the drive assembly is connected to the disc II 305; the seal 307 is fixedly connected to the outer ring surface of the disc II 305; the conduit 308 is fixedly connected to the disc II 305; the pressure gauge 306 is fixedly connected to and communicated with the conduit 308.

[0029] The sealing member 307 and the sealing ring 2091 are both made of rubber to enhance the sealing performance of the tinplate can 2 .

[0030] The semicircular ring 205 is provided with an inclined portion 2052 for guiding the movement of the tinplate can 2 .

[0031] The drive assembly includes an electric slide rail 301, an electric slider 302, a connecting plate 303 and an electric actuator IV 304; two electric slide rails 301 are fixedly connected to the mounting frame 1; each electric slide rail 301 is slidably connected to an electric slider 302; all electric sliders 302 are commonly fixedly connected to a connecting plate 303; two electric actuators IV 304 are fixedly connected to the connecting plate 303, and the electric actuator IV 304 is an electric push rod; the telescopic parts of all electric actuators IV 304 are fixedly connected to the disc II 305.

[0032] The external air pump is connected to the conduit 308 in advance. When the tinplate can 2 is shaped, the tinplate can 2 is placed on the semicircular ring 205 manually or by an external robotic arm, and the tinplate can 2 is guided by the inclined portion 2052 so that the tinplate can 2 is sleeved on the outside of all the top plates 219. Then, the electric actuator I 201 is controlled to start and move the upper cover 202 downward, thereby moving the upper cover 202 downward along all the slide rods 203 and compressing all the elastic members I 206 until the lower surface of the upper cover 202 is against the upper surface of the semicircular ring 205, thereby making the upper cover 202 and the semicircular ring 205 form a complete cylinder, thereby limiting the tinplate can 2 through the cooperation of the upper cover 202 and the semicircular ring 205.

[0033] Then the motor 211 is controlled to start, the output shaft of the motor 211 rotates to drive the spline sleeve 212 to rotate, the spline sleeve 212 rotates to drive the spline shaft 213 to rotate, the spline shaft 213 rotates to drive the screw rod 215 to rotate, and the sliding block 216 moves along the screw rod 215 under the limiting action of the two telescopic rods 214. At the same time, the movement of the sliding block 216 drives the telescopic rod 214 to move, and the movement of the sliding block 216 drives the corresponding connecting rod 218 to move and rotate, so that all the connecting rods 218 are rotated, and the rotation of all the connecting rods 218 drives the corresponding top plates 219 to move, so that all the top plates 219 expand outward, so that all the top plates 219 are against the inner wall of the tinplate can 2, as shown in FIG. Figure 8 As shown, since the inner sides of the upper cover 202 and the semicircular ring 205 are provided with a smooth coating, and the side of the top plate 219 away from the connecting rod 218 is provided with a rough coating, as the motor 211 continues to operate, all the top plates 219 move against the inner side of the tinplate can 2, so that all the top plates 219 rotate to drive the tinplate can 2 to rotate along the inner side of the upper cover 202 and the inner side of the semicircular ring 205, and then through the rotation of all the top plates 219, cooperate with the upper cover 202 and the semicircular ring 205 to jointly shape the tinplate can 2, thereby achieving the expansion treatment of the tinplate can 2.

[0034] During the process of expanding the tinplate can 2, the tinplate can 2 will be stretched and deformed, which will cause the weld 21 of the tinplate can 2 to be stretched, which may easily cause cracks to form at the weld 21 of the tinplate can 2 and cause damage, thereby affecting the quality of the tinplate can 2. If the damaged tinplate can 2 is not picked out in time, the tinplate can 2 will continue to be produced and processed subsequently, resulting in a huge waste of resources.

[0035] In order to solve the above problem, all electric actuators II 208 are controlled to start and drive the disc I 209 to move. The movement of the disc I 209 drives the connecting frame 210 to move, and then drives all connected parts to move, so that the spline sleeve 212 slides on the spline shaft 213, and the sealing ring 2091 on the disc I 209 moves to press against the left end of the tinplate can 2, and then the two electric sliders 302 are controlled to start and move down along an electric slide rail 301 respectively. The movement of the two electric sliders 302 drives the connecting frame 210 to move together. The connecting plate 303 moves, and the movement of the connecting plate 303 drives all the electric actuators IV 304 to move, and then drives all the connected parts to move, so that the center of the disc II 305 is aligned with the center of the connecting shaft 217, and then the two electric actuators IV 304 are controlled to start and drive the disc II 305 to move in the direction close to the connecting shaft 217, until the disc II 305 is sleeved on the connecting shaft 217, and the movement of the disc II 305 drives the seal 307 to move synchronously, so that the seal 307 is stuck in the upper cover 202. The disc Ⅱ 305 and the seal 307 cooperate to press against the right end of the tinplate can 2, and the disc Ⅰ 209, the sealing ring 2091, the disc Ⅱ 305 and the seal 307 cooperate to seal the two ends of the tinplate can 2, so that a sealed space is formed in the tinplate can 2, and the electric actuator Ⅰ 201 is controlled to start and drive the upper cover 202 to move upward and reset, so that the upper cover 202 is away from the tinplate can 2. , then control the external air pump to start operating and inflate the tinplate can 2 through the conduit 308. After the pressure in the tinplate can 2 reaches a preset value, the pressure is maintained, and the value on the pressure gauge 306 is recorded to detect the air tightness of the tinplate can 2. In this way, it is known whether cracks or damage occur at the weld 21 of the tinplate can 2 during the expansion process, thereby preventing the leaking tinplate can 2 from flowing into the next process, thereby realizing the air tightness test of the tinplate can 2.

[0036] It should be noted that by controlling the electric heating wire in the top plate 219 to operate, the tinplate can 2 is heated to 40°C during the expansion process. If the airtightness test of the tinplate can 2 is qualified, all the corresponding components are controlled to move and reset until the upper half of the tinplate can 2 is exposed, and then the infrared sensor 2022 installed on the upper cover 202 is started to detect the tinplate can 2. Since the entire tinplate can 2 is heated, the surface of the tinplate can 2 has heat, and the temperature change of the surface of the tinplate can 2 can be detected by the infrared sensor 2022, thereby identifying the dents on the surface of the tinplate can 2, and then the motor 211 is controlled to start operation, thereby causing the tinplate can 2 to rotate, completing the overall detection of the tinplate can 2, thereby realizing the detection of the expansion quality of the tinplate can 2. If dents are detected on the surface of the tinplate can 2, the tinplate can 2 is expanded again, thereby further improving the quality of the tinplate can 2.

[0037] Example 2: Based on Example 1, Figure 9 and Figure 10 As shown, it also includes a marking system; the marking system is connected to the fixed frame 204; the marking system includes a fixed box 401, an electric actuator III 402 and a limit plate 403; the fixed frame 204 is fixedly connected to the fixed box 401; two electric actuators III 402 are fixedly connected to the bottom inside the fixed box 401, and the electric actuator III 402 is an electric push rod; the telescopic parts of all electric actuators III 402 are commonly fixedly connected to a limit plate 403; the limit plate 403 is slidably connected to the fixed box 401.

[0038] The upper cross-section of the limiting plate 403 is configured to be triangular in shape, so as to better support the weld 21 on the tinplate can 2 .

[0039] In the process of expanding the tinplate can 2, all the top plates 219 rotate to drive the tinplate can 2 to rotate along the inner side of the upper cover 202 and the inner side of the semicircular ring 205. When the weld 21 in the tinplate can 2 rotates to the limit plate 403, since the weld 21 is higher than the surface of the tinplate can 2, a groove is formed at the weld 21. The limit plate 403 controls the two electric actuators III 402 to start and drive the limit plate 403 to move upward, thereby causing the limit plate 403 to move upward and protrude from the inner side of the semicircular ring 205. When all the top plates 219 rotate to the limit plate 403, the weld 21 is higher than the surface of the tinplate can 2. When the rotation drives the tinplate can 2 to rotate along the inner side of the upper cover 202 and the inner side of the semicircular ring 205, the weld 21 on the tinplate can 2 touches the limit plate 403 and is blocked by the limit plate 403, so that the tinplate can 2 is restricted by the limit plate 403 and no longer rotates along the inner side of the upper cover 202 and the inner side of the semicircular ring 205, so that all the top plates 219 rotate relative to the inner wall of the tinplate can 2, shaping the tinplate can 2 from the inside out, so that the inner wall of the tinplate can 2 is smoother and flatter, thereby improving the quality of the tinplate can 2.

[0040] It should be noted that, during the airtightness test of the tinplate cans 2, if it is detected that the airtightness of the tinplate cans 2 is unqualified, the two electric actuators III 402 are controlled to start and drive the limit plates 403 to move upward, squeezing the tinplate cans 2 so that a dent is formed on the surface of the tinplate cans 2, thereby marking the tinplate cans 2 that are unqualified for airtightness, so that the unqualified tinplate cans 2 can be manually sorted out.

[0041] While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. The scope of the following claims is to be accorded the broadest interpretation so as to encompass all modifications and equivalent structures and functions.

Claims

1. A tinplate can rolling forming device, comprising a mounting frame (1); characterized in that: The invention also includes an electric actuator I (201); the electric actuator I (201) is installed on the mounting frame (1); the telescopic part of the electric actuator I (201) is fixedly connected to the upper cover (202); a plurality of slide rods (203) are slidably connected to the upper cover (202); a fixing frame (204) is fixedly connected to the mounting frame (1); a semicircular ring (205) is fixedly connected to the fixing frame (204); the inner sides of the upper cover (202) and the semicircular ring (205) are provided with a smooth coating; the semicircular ring (205) is fixedly connected to all the slide rods (203); each semicircular ring (205) is sleeved with an elastic member I (206) on the outer side, one end of the elastic member I (206) is fixedly connected to the upper cover (202), and the other end of the elastic member I (206) is fixedly connected to the semicircular ring (205); and an expansion component for shaping the tinplate can (2) is provided on the mounting frame (1).

2. The tinplate can rolling forming equipment according to claim 1, characterized in that: The expansion assembly includes a support frame (207) fixed on the mounting frame (1); at least two electric actuators II (208) are installed on the support frame (207); the telescopic parts of all electric actuators II (208) are fixedly connected to a disc I (209); a connecting frame (210) is fixedly connected to the side of the disc I (209) close to the electric actuator II (208); a motor (211) is fixedly connected to the connecting frame (210); the output shaft of the motor (211) is fixedly connected to a spline sleeve (212) that is rotatably connected to the connecting frame (210); a spline shaft (213) is slidably connected to the spline sleeve (212); a spline is fixedly connected to the disc I (209). At least two telescopic rods (214); a screw rod (215) is fixedly connected to one end of the spline shaft (213) away from the spline sleeve (212); a sliding block (216) is screwed onto the screw rod (215); the sliding block (216) is fixedly connected to the telescopic parts of all telescopic rods (214); a connecting shaft (217) is fixedly connected to one end of the screw rod (215) away from the spline shaft (213); a plurality of connecting rods (218) are rotatably connected to the sliding block (216) and the connecting shaft (217); all the connecting rods (218) on the same horizontal line are rotatably connected to a top plate (219), and a rough coating is provided on the side of the top plate (219) away from the connecting rods (218).

3. The tinplate can rolling forming equipment according to claim 2, characterized in that: An electric heating wire for heating the tinplate can (2) is provided in the top plate (219).

4. The tinplate can rolling forming equipment according to any one of claims 1 to 3, characterized in that: It also includes an infrared sensor (2022); an infrared sensor (2022) is installed on the outer side of the upper cover (202) for detecting dents on the surface of the tinplate can (2).

5. The tinplate can rolling forming equipment according to claim 4, characterized in that: It also includes a sealing ring (2091) fixed to the disc I (209), and the sealing ring (2091) is located on the side of the disc I (209) away from the connecting frame (210); the upper cover (202) and the semicircular ring (205) are both provided with a groove matching the sealing ring (2091) on the side close to the disc I (209).

6. The tinplate can rolling forming equipment according to claim 5, characterized in that: The device further comprises a driving assembly connected to the mounting frame (1); a card slot (2021) is provided on the upper cover (202); an arcuate slot (2051) is provided on the semicircular ring (205); the driving assembly is connected to the disc II (305), and the driving assembly is used to drive the disc II (305) to move; a sealing member (307) is fixedly connected to the disc II (305); a conduit (308) is fixedly connected to the disc II (305); and a pressure gauge (306) is fixedly connected to and communicated with the conduit (308).

7. The tinplate can rolling forming equipment according to claim 6, characterized in that: The sealing member (307) and the sealing ring (2091) are both made of rubber.

8. The tinplate can rolling forming equipment according to claim 7, characterized in that: The semicircular ring (205) is provided with an inclined portion (2052) for guiding the movement of the tinplate can (2).

9. The tinplate can rolling forming equipment according to claim 8, characterized in that: The device also includes a marking system connected to the fixing frame (204); the marking system includes a fixing box (401) fixed to the fixing frame (204); at least two electric actuators III (402) are fixed to the fixing box (401); and the telescopic parts of all the electric actuators III (402) are fixedly connected to a limit plate (403) that is slidably connected to the fixing box (401).

10. The tinplate can rolling forming equipment according to claim 9, characterized in that: The upper cross section of the limiting plate (403) is configured to be triangular in shape.

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