A steel drum production pretreatment production line

Abstract

The present application relates to steel drum processing equipment technical field, and disclose a kind of steel drum production pretreatment production line, production line body, the production line body includes transport table, heating furnace, cooling section, cleaning tank and blanking device;The steel drum production pretreatment production line is set using the contact component, when steel drum is transported and offset, barrel body touches drive bar, drives fixed column and transmission column rotation, volute spring torsion force storage.Transmission column is driven transmission wheel and bevel gear one rotation by belt, 90 ° direction change transmission is realized by bevel gear two, and drive rotating lever rotation.Arc-shaped sliding slot of rotating lever pushes slide bar transverse movement, drives slide plate and contact plate to extend from recess.Two groups of symmetrical contact component bidirectional synchronous force, push steel drum to center and complete deviation correction, effectively prevent steel drum offset, jam and collision, improve conveying centring, production line smoothness and subsequent process machining precision and product consistency.

Description

Technical Field

[0001] This invention relates to the field of steel drum processing equipment technology, specifically a steel drum production pretreatment production line. Background Technology

[0002] Steel drums, as core containers for industrial packaging and storage, are widely used in industries such as chemicals, oil, and food. Their pre-treatment process directly determines the quality of the finished product and production efficiency. Intelligent heat treatment production lines, as key equipment for automated steel drum processing, typically integrate processes such as conveying, heating, cooling, and cleaning. They enable continuous operation of steel drum surface treatment, stress relief, and performance stabilization, representing the mainstream technological direction for improving quality and efficiency in modern steel drum manufacturing. Traditional steel drum pre-treatment often employs segmented manual operations, while intelligent heat treatment production lines, through integrated process design, significantly improve production continuity and processing consistency, becoming core equipment for industry upgrading.

[0003] Existing intelligent heat treatment production lines for steel drums suffer from significant problems in actual operation, including insufficient conveying correction and jamming handling capabilities. When steel drums are continuously transported on the conveyor rollers, they are susceptible to factors such as conveying deviations, uneven roller surface stress, and missing guide structures, frequently resulting in lateral shifts. Furthermore, the lack of an adaptive centering mechanism prevents automatic position correction during transport. The shifted drums continue to deviate from the conveying center, leading to jamming, equipment collisions, and stacking, thus reducing the continuous operation stability and automated efficiency of the production line. Summary of the Invention

[0004] Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a pre-treatment production line for steel drum production, which solves the problems of steel drums easily shifting laterally during the roller conveyor process in intelligent heat treatment production lines, failing to automatically center and correct deviations, failing to automatically lift and reset after jamming, and failing to link and block feeding.

[0005] Technical solution To achieve the above objectives, the present invention provides the following technical solution: A pre-treatment production line for steel drum production includes a production line body, which includes a conveyor platform, a heating furnace, a cooling section, a washing tank, and a feeding device; it also includes an abutment component for centering and abutting the steel drums during transport; a blocking component for blocking the feeding point when the steel drums deviate during transport; and a movable component for lifting the steel drums when they jam during transport. The abutment component includes: a column mounted on the outer wall of the conveyor platform; a drive column rotatably connected inside the column; a fixed column mounted on the top of the drive column; a drive bar mounted on the surface of the fixed column; a drive wheel connected to the surface of the drive column via a belt drive; a bevel gear one mounted on the top of the drive wheel; a bevel gear two meshing on the top of the bevel gear one; a fixed frame mounted inside the column; a rotating rod mounted on the surface of the bevel gear two; a sliding rod rotatably connected to the inner side of the fixed frame; a sliding rod slidably connected to the surface of the rotating rod; a sliding plate mounted on the surface of the sliding rod; and an abutment plate mounted on the surface of the sliding plate.

[0006] Preferably, a spiral spring is installed on the surface of the transmission column, and the spiral spring is installed inside the column base.

[0007] Preferably, the rotating rod has an arc-shaped groove on its surface, the fixing frame has a U-shaped cross-section, and the column base has a groove on its surface.

[0008] Preferably, the blocking assembly includes: a fixed platform, which is installed on the outer wall of the transport platform, and a connecting frame is installed on the outer wall of the fixed platform, with a blocking plate slidably connected inside the connecting frame.

[0009] Preferably, a threaded rod is installed on the top of the transmission column, a threaded plate is threadedly connected to the surface of the threaded rod, a connecting rod is installed on the outside of the threaded plate, and the connecting rod is installed on the outer wall of the blocking plate.

[0010] Preferably, the outer wall of the connecting frame is provided with a sliding groove, and the cross-section of the connecting rod is triangular.

[0011] Preferably, the movable component includes: a long rod hinged to the surface of a threaded plate, a movable plate one hinged to the bottom of the long rod, a rotating column mounted on the surface of the movable plate one, the rotating column being rotatably connected to the outer wall of the column base, a movable plate two mounted on the outer side of the rotating column, a long strip hinged to the surface of the movable plate two, and a short plate hinged to the surface of the long strip.

[0012] Preferably, a push plate is installed on the top of the short plate, a connecting shaft is installed on the top of the push plate, a long plate is installed on the top of the connecting shaft, the long plate is movably connected to the inner side of the transport table, and an abutment strip is installed on the top of the long plate.

[0013] Preferably, there are two sets of abutment components, and both sets of abutment components are symmetrically arranged with the center line of the transport platform as the axis of symmetry.

[0014] Beneficial effects Compared with the prior art, the present invention provides a pretreatment production line for steel drum production, which has the following beneficial effects: 1. This steel drum pretreatment production line utilizes an anti-deviation assembly. When the steel drum deviates during transport on the conveyor platform, the drum body contacts the drive bar, causing the fixed column and transmission column to rotate, and the spiral spring to twist and store force. The transmission column drives the transmission wheel and bevel gear one to rotate via a belt, and achieves a 90° change of direction through bevel gear two, driving the rotating rod to rotate. The arc-shaped groove of the rotating rod pushes the slide bar to move laterally, causing the slide plate and anti-deviation plate to extend out of the groove. Two sets of symmetrical anti-deviation assemblies apply force in both directions synchronously, pushing the steel drum to the center to complete the correction, effectively preventing the steel drum from deviating, jamming, and colliding, improving the centering of the conveyor, the smoothness of the production line, and the processing accuracy and product consistency of subsequent processes.

[0015] 2. This steel drum pretreatment production line utilizes a blocking assembly. The rotation of the drive column drives the top threaded rod to rotate synchronously, causing the threaded plate to move linearly up and down, providing power to the blocking assembly. The threaded plate drives the triangular-section connecting rod to move directionally along the slide groove of the connecting frame, pushing the blocking plate to slide and close the feed inlet. The more severe the steel drum deviates, the tighter the blocking plate seals, achieving adaptive protection. After the steel drum is centered, the spiral spring drives the drive column to reverse, resetting all components and reopening the feed channel. This assembly prevents subsequent steel drums from flooding in, causing congestion, stacking, and jamming, improving the reliability of the production line, equipment lifespan, and pretreatment pass rate.

[0016] 3. This steel drum pretreatment production line utilizes movable components. A threaded plate lifts and pulls a long rod to swing, driving movable plate one to rotate synchronously with movable plate two, forming a two-way lever transmission. Movable plate two pushes the long and short plates to rise, and via a push plate and connecting shaft, it moves the long plate and the contact bar upwards, lifting the jammed steel drum from its jamming point. After the jamming is released, a spiral spring drives all mechanisms to reset, awaiting the next trigger. The movable components prevent steel drum jamming, scratching deformation, and equipment downtime, improving the production line's continuous operation capability, equipment safety, and steel drum pretreatment production efficiency. Attached Figure Description

[0017] Figure 1 This is a front view structural diagram of a steel drum production pretreatment production line proposed in this invention; Figure 2 This is a front view structural diagram of the transport platform portion of a steel drum production pretreatment production line proposed in this invention; Figure 3 This is a schematic diagram of the connection structure of the contact component, blocking component, and movable component in a steel drum production pretreatment production line proposed in this invention; Figure 4 This is a front view schematic diagram of the contact component in a steel drum production pretreatment production line proposed in this invention; Figure 5 This is a front view schematic diagram of the blocking component of a steel drum production pretreatment line proposed in this invention; Figure 6 This is a front view schematic diagram of the active components of a steel drum production pretreatment line proposed in this invention.

[0018] In the diagram: 1. Production line body; 10. Conveyor platform; 11. Heating furnace; 12. Cooling section; 13. Cleaning tank; 14. Feeding device; 2. Contact assembly; 21. Column; 22. Transmission column; 23. Fixed column; 24. Drive bar; 25. Transmission wheel; 26. Bevel gear one; 27. Bevel gear two; 28. Fixed frame; 29. ​​Rotating rod; 210. Slide rod; 2100. Groove; 211. Slide plate; 212. Contact plate; 2 13. Spiral spring; 290. Arc-shaped slide groove; 3. Blocking assembly; 31. Fixed platform; 32. Connecting frame; 33. Blocking plate; 34. Threaded rod; 35. Threaded plate; 36. Connecting rod; 320. Slide groove; 4. Movable assembly; 41. Long rod; 42. Movable plate one; 43. Rotating column; 44. Movable plate two; 45. Long strip; 46. Short plate; 47. Push plate; 48. Connecting shaft; 49. Long plate; 410. Abutment strip. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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.

[0020] Please see Figure 1 - Figure 6 As shown, a steel drum production pretreatment production line includes a production line body 1, which includes a conveyor platform 10, a heating furnace 11, a cooling section 12, a cleaning tank 13, and a feeding device 14. It also includes abutment component 2, which is used to center and abut the steel drum during transportation; Blocking component 3 is used to block the feed point when the steel drum shifts during transportation; Active component 4 is used to lift the steel drum when it is jammed during transportation; First, the contact component 2 includes: a column 21, which is installed on the outer wall of the transport platform 10. The fixed installation of the column 21 achieves the positioning and protection of the overall mechanism. A transmission column 22 is rotatably connected inside the column 21. A fixed column 23 is installed on the top of the transmission column 22. A drive bar 24 is installed on the surface of the fixed column 23. The drive bar 24 contacts the steel barrel to achieve offset triggering and power acquisition. A transmission wheel 25 is connected to the surface of the transmission column 22 via a belt drive. A bevel gear 26 is installed on the top of the transmission wheel 25. A bevel gear 27 is meshed at the top of column 26. A fixed frame 28 is installed inside column 21. Bevel gear 27 is rotatably connected to the outer wall of fixed frame 28. A rotating rod 29 is installed on the surface of bevel gear 27. The rotating rod 29 is rotatably connected to the inner side of fixed frame 28. A sliding rod 210 is slidably connected to the surface of rotating rod 29. A sliding plate 211 is installed on the surface of sliding rod 210. The sliding plate 211 is slidably connected to the inside of column 21. An abutment plate 212 is installed on the surface of sliding plate 211. The abutment plate 212 achieves lateral centering abutment of the steel barrel.

[0021] Secondly, a spiral spring 213 is installed on the surface of the transmission column 22. The spiral spring 213 is installed inside the column base 21. The transmission column 22 and the overall mechanism are automatically reset through the elastic storage of the spiral spring 213.

[0022] Furthermore, the surface of the rotating rod 29 is provided with an arc-shaped groove 290, which provides guidance and smooth pushing for the sliding rod 210. The cross-section of the fixing frame 28 is U-shaped, which provides reliable support for the rotating rod 29 and the bevel gear 27. The surface of the column 21 is provided with a groove 2100, which allows for the concealment and smooth extension of the contact plate 212.

[0023] Furthermore, the blocking component 3 includes: a fixed platform 31, which is installed on the outer wall of the transport platform 10. The fixed platform 31 provides a stable mounting base for the blocking component 3. A connecting frame 32 is installed on the outer wall of the fixed platform 31. A blocking plate 33 is slidably connected inside the connecting frame 32. The opening and closing of the feed inlet is achieved by sliding the blocking plate 33.

[0024] Furthermore, a threaded rod 34 is installed on the top of the transmission column 22. The threaded rod 34 provides lifting power by rotating synchronously with the transmission column 22. A threaded plate 35 is threadedly connected to the surface of the threaded rod 34. A connecting rod 36 is installed on the outside of the threaded plate 35. The connecting rod 36 is installed on the outer wall of the blocking plate 33. The blocking plate 33 is driven to move synchronously by the connecting rod 36.

[0025] Furthermore, a groove 320 is provided on the outer wall of the connecting frame 32. The groove 320 provides directional movement limit for the connecting rod 36 to avoid jamming. The cross-section of the connecting rod 36 is triangular, which enhances the structural rigidity and prevents deformation and shaking.

[0026] Furthermore, the movable component 4 includes: a long rod 41, which is hinged to the surface of the threaded plate 35, converting the linear motion of the threaded plate 35 into a swinging thrust through the hinge; a movable plate 42 is hinged to the bottom of the long rod 41; a rotating column 43 is mounted on the surface of the movable plate 42; the rotating column 43 is rotatably connected to the outer wall of the column base 21; a movable plate 44 is mounted on the outside of the rotating column 43; a long strip 45 is hinged to the surface of the movable plate 44, transmitting upward lifting power through the long strip 45; and a short plate 46 is hinged to the surface of the long strip 45.

[0027] Furthermore, a push plate 47 is installed on the top of the short plate 46, a connecting shaft 48 is installed on the top of the push plate 47, and a long plate 49 is installed on the top of the connecting shaft 48. The long plate 49 is movably connected to the inside of the transport platform 10, and can lift and reset the stuck steel drum by moving up and down. An abutment strip 410 is installed on the top of the long plate 49, which stabilizes the steel drum and prevents scratches.

[0028] Finally, two sets of contact components 2 are provided, and both sets of contact components 2 are symmetrically arranged with the center line of the transport platform 10 as the axis of symmetry. The bidirectional symmetrical arrangement achieves the centering force, improving the centering and correction effect of the steel barrel and the transport stability.

[0029] Working principle: Based on production line body 1, this production line integrates the entire process of transportation, heating, cooling, cleaning, and unloading. Through the contact component 2, blocking component 3, and moving component 4, it achieves triple intelligent protection of steel drum transportation centering, offset blocking, and jamming lifting, ensuring continuous and stable operation of heat treatment and pretreatment. The steel drums are transported sequentially by the transport platform 10, enter the heating furnace 11 to complete the heat treatment and temperature rise, then pass through the cooling section 12 to cool down, and then are sent to the cleaning tank 13 to remove surface impurities. Finally, the unloading device 14 completes the unloading, realizing the full automation of steel drum pretreatment.

[0030] After the steel drum is conveyed and deflected on the conveyor platform 10, the drum body first contacts the drive bar 24. Under the thrust of the continuous forward conveying of the steel drum, the drive bar 24 is deflected, causing the fixed column 23 fixed to it to rotate synchronously. The fixed column 23 further drives the transmission column 22 to rotate inside the column base 21. At this time, the spiral spring 213 sleeved on the outer wall of the transmission column 22 is twisted and compressed, completing the storage of elastic potential energy. This provides reliable power for the automatic reset of the entire mechanism after the steel drum is centered, ensuring that the initial state can be quickly restored after a single action, and continuously adapting to the conveying of the next steel drum. To meet the correction requirements, as the transmission column 22 rotates, it synchronously drives the transmission wheel 25 to rotate at high speed via the transmission belt on its surface. The transmission wheel 25 drives the bevel gear 26, which is coaxially mounted on its top, to rotate. The bevel gear 26 meshes perpendicularly with the bevel gear 27, converting the horizontal rotational motion into the vertical rotational motion, thus achieving a 90° change in the direction of power transmission. The bevel gear 27 is supported and mounted on the outer wall of the fixed frame 28 to ensure that there is no shaking or misalignment during the meshing transmission, resulting in higher transmission accuracy. When the bevel gear 27 rotates, it drives the centrally connected rotating rod 29 to rotate in a fixed position. The inner side of the frame 28 rotates synchronously; the arc-shaped groove 290 on the surface of the rotating rod 29 moves in a circular motion with the rotating rod 29, and the inner wall of the groove continuously presses the end of the slide rod 210, forcing the slide rod 210 to move laterally in a straight line along the guide structure inside the column 21; the slide rod 210 then drives the slide plate 211 fixed to it to slide smoothly inside the column 21, accurately converting the rotational motion into a linear pushing motion. When the slide plate 211 slides, it drives the front end of the contact plate 212 to extend outward from the groove 2100 on the surface of the column 21. The contact plate 212 pushes against the offset steel barrel body from the side, gradually... The steel drum is pushed towards the center of the conveyor platform 10. Since the two sets of abutment components 2 are symmetrically arranged with the center line of the conveyor platform 10 as the axis of symmetry, the abutment plates 212 on both sides can achieve bidirectional synchronous abutment and centering force, avoiding secondary displacement of the steel drum under unilateral force, and quickly and smoothly correcting the steel drum to the center position of the conveyor, completing automatic centering and correction, preventing the steel drum from lateral displacement, tilting, jamming and collision during the conveying process, improving the centering and stability of the steel drum conveying and the smoothness of the production line operation, while improving the processing accuracy and product consistency of subsequent heating, cooling and cleaning processes.

[0031] In the contact assembly 2, the transmission column 22 driven by the steel barrel rotates, and the threaded rod 34, coaxially fixed at its top, rotates synchronously and in the same direction. The threaded rod 34 and the threaded plate 35 form a threaded pair, converting the rotational motion into the linear lifting motion of the threaded plate 35, providing stable power for the blocking action. During the lifting process, the threaded plate 35 drives the connecting rod 36 fixed on the outside to move synchronously. The connecting rod 36 has a triangular cross-section, strong structural rigidity, and is not easily deformed, which can stably transmit thrust and avoid transmission gaps and shaking. The connecting rod 36 slides directionally along the slide groove 320 opened on the connecting frame 32, ensuring that the movement trajectory is straight and does not jam. The connecting rod 36 directly pushes the blocking plate 33, causing the blocking plate 33 to move along the guide structure inside the connecting frame 32. The slides down, gradually closing the feed inlet of the conveyor table 10. The greater the steel drum offset, the greater the rotation angle of the transmission column 22, the longer the stroke of the threaded rod 34 driving the threaded plate 35, and the tighter the seal of the blocking plate 33. This achieves adaptive protection that is more thorough in blocking the more severe the offset. When the steel drum is pushed back to the center position by the abutment component 2, the transmission column 22 rotates in the opposite direction under the elastic force of the spiral spring 213, driving the threaded rod 34 to reverse, the threaded plate 35 to rise and reset, the connecting rod 36 pulls the blocking plate 33 back, the feed channel reopens, and the production line resumes normal feeding. This prevents congestion, stacking, and jamming caused by the continuous feeding of subsequent materials when the steel drum is offset, and improves the reliability of the automated operation of the production line, the service life of the equipment, and the qualification rate of the steel drum pretreatment.

[0032] In the blocking assembly 3, the threaded plate 35 moves in a linear motion under the drive of the threaded rod 34. The long rod 41, hinged to the side of the threaded plate 35, is pulled synchronously, converting the linear motion into a swinging thrust, providing input power for the movable assembly 4. The long rod 41 pushes the bottom hinged movable plate 42, which drives the central rotating column 43 to rotate around the outer wall of the column platform 21. The rotating column 43 simultaneously drives the other movable plate 44 to swing synchronously, forming a two-way lever linkage, resulting in smoother movement and greater torque. The movable plate 44 swings upward, pushing the top hinged long strip 45 upward. The long strip 45 then drives the short plate 46 to lift synchronously. The lifting stroke is amplified through multi-stage linkages to ensure that the lifting height is sufficient to release the jamming material. The short plate 46 pushes the push plate upward. 47. Push plate 47 pushes long plate 49 upward through connecting shaft 48; long plate 49 extends upward inside the conveyor table 10, driving top contact strip 410 to stably support the bottom of the steel drum, lifting the entire steel drum upward, so that it is removed from the jamming point of the conveyor table 10, and restoring the normal conveying posture. After the jamming is released and the steel drum is centered, the spiral spring 213 drives the transmission column 22 to rotate, the threaded plate 35 resets, the long rod 41 swings back, and the movable plate 1 42, movable plate 2 44, long strip 45, and short plate 46 fall back in sequence. Long plate 49 and contact strip 410 sink and reset, waiting for the next jamming trigger, to prevent the steel drum from jamming, blocking, scraping and deforming during transportation and to prevent the equipment from being forced to stop, thereby improving the smoothness of the production line operation, equipment safety and steel drum pretreatment production efficiency.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A pretreatment production line for steel drum production, comprising a production line body (1), characterized in that: The production line body (1) includes a transport platform (10), a heating furnace (11), a cooling section (12), a cleaning tank (13), and a feeding device (14). It also includes abutment components (2) for centering and abutting the steel drum during transport; The blocking component (3) is used to block the feed point when the steel drum is shifted during transportation; The movable component (4) is used to lift the steel drum when it is jammed during transportation; The contact component (2) includes: a column (21) mounted on the outer wall of the transport platform (10), a transmission column (22) rotatably connected inside the column (21), a fixed column (23) mounted on the top of the transmission column (22), a drive bar (24) mounted on the surface of the fixed column (23), a transmission wheel (25) connected to the surface of the transmission column (22) via a belt drive, a bevel gear one (26) mounted on the top of the transmission wheel (25), and a bevel gear two (27) meshing on the top of the bevel gear one (26). The column base (21) is equipped with a fixed frame (28). The bevel gear (27) is rotatably connected to the outer wall of the fixed frame (28). A rotating rod (29) is installed on the surface of the bevel gear (27). The rotating rod (29) is rotatably connected to the inner side of the fixed frame (28). A sliding rod (210) is slidably connected to the surface of the rotating rod (29). A sliding plate (211) is installed on the surface of the sliding rod (210). The sliding plate (211) is slidably connected to the inside of the column base (21). An abutment plate (212) is installed on the surface of the sliding plate (211).

2. The steel drum production pretreatment production line according to claim 1, characterized in that: A spiral spring (213) is mounted on the surface of the transmission column (22), and the spiral spring (213) is installed inside the column base (21).

3. The steel drum production pretreatment production line according to claim 1, characterized in that: The rotating rod (29) has an arc-shaped groove (290) on its surface, the fixing frame (28) has a U-shaped cross-section, and the column base (21) has a groove (2100) on its surface.

4. The steel drum production pretreatment production line according to claim 1, characterized in that: The blocking assembly (3) includes: a fixed platform (31), which is installed on the outer wall of the transport platform (10), and a connecting frame (32) is installed on the outer wall of the fixed platform (31), and a blocking plate (33) is slidably connected inside the connecting frame (32).

5. A steel drum production pretreatment production line according to claim 4, characterized in that: A threaded rod (34) is installed on the top of the transmission column (22), and a threaded plate (35) is threadedly connected to the surface of the threaded rod (34). A connecting rod (36) is installed on the outside of the threaded plate (35), and the connecting rod (36) is installed on the outer wall of the baffle plate (33).

6. A steel drum production pretreatment production line according to claim 5, characterized in that: The outer wall of the connecting frame (32) is provided with a sliding groove (320), and the cross-section of the connecting rod (36) is triangular.

7. A steel drum production pretreatment production line according to claim 1, characterized in that: The movable component (4) includes: a long rod (41) hinged to the surface of a threaded plate (35), a movable plate (42) hinged to the bottom of the long rod (41), a rotating column (43) mounted on the surface of the movable plate (42), the rotating column (43) being rotatably connected to the outer wall of the column base (21), a movable plate (44) mounted on the outside of the rotating column (43), a long strip (45) hinged to the surface of the movable plate (44), and a short plate (46) hinged to the surface of the long strip (45).

8. A steel drum production pretreatment production line according to claim 7, characterized in that: A push plate (47) is installed on the top of the short plate (46), a connecting shaft (48) is installed on the top of the push plate (47), a long plate (49) is installed on the top of the connecting shaft (48), the long plate (49) is movably connected to the inside of the transport platform (10), and an abutment strip (410) is installed on the top of the long plate (49).

9. A pretreatment production line for steel drum production according to claim 1, characterized in that: The contact component (2) is provided in two sets, and both sets of the contact component (2) are symmetrically arranged with the center line of the transport platform (10) as the axis of symmetry.

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