Uncovered roller

Abstract

The utility model provides an uncovered roller which comprises a support and a roller body, the support is in rolling connection with the roller body, the roller body comprises a roller body and end covers arranged at the two ends of the roller body, the end covers are gear-shaped, gear teeth are arranged on the peripheries of the end covers, the support is provided with a driving shaft, the driving shaft is movably connected with a support shaft, the driving shaft is provided with a driving gear, and the driving shaft is in key connection with a driving gear shaft. Gear teeth arranged on the periphery of the driving gear are meshed with gear teeth arranged on the periphery of the end cover. The cross section of the cylinder body is spiral, the cylinder body and the end cover form a cavity, the cavity comprises a feeding channel and an immersion cleaning cavity, and materials enter the immersion cleaning cavity from the feeding channel for immersion cleaning. Through the design of the spiral barrel body, the problems that a gap exists between the cover and the feeding port, small metal workpieces are prone to being clamped and embedded, and the cover is not tightly closed due to long-time abrasion are solved. Manual operation is not needed in the phosphating process, automation of the phosphating process is achieved, the labor cost is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of metal surface treatment, and particularly relates to a coverless roller. Background Art

[0002] Phosphating is a chemical surface treatment process that involves contacting a metal surface with a phosphating solution, forming a protective phosphate film that protects the metal from corrosion and prepares the base for subsequent painting. During the phosphating process, the metal workpiece to be treated is fed into a drum. A phosphating solution tank connected to the drum body holds the solution. The drum's rotation causes the workpiece inside to tumble, ensuring uniform contact between the workpiece surface and the solution. Existing drums feature a feed port with a lid. Workers must open the lid to feed the workpiece during feeding and then securely close it during phosphating. After phosphating, the lid must be opened again to remove the workpiece, wasting labor and reducing equipment utilization. This wastes manpower and fails to meet the requirements of automated phosphating production lines. Furthermore, the phosphating solution is toxic, and operators exposed to it during the process of opening the lid can be harmful to their health. Furthermore, the drum's lid is prone to wear and tear over extended use, leading to loose lids and detachment during the phosphating process. The gap between the lid and the feed port can easily trap smaller workpieces, causing quality issues.

[0003] Therefore, the above problems need to be solved urgently. Utility Model Content

[0004] Purpose of the utility model: In order to overcome the above shortcomings, the utility model provides a coverless roller, which abandons the cover of the traditional roller, ensuring that the metal workpiece is always in the roller during the phosphating process. After the phosphating is completed, the metal workpiece can be poured out of the roller only by changing the rotation direction of the roller. It solves the problem that there is a gap between the cover and the feed port, which makes it easy for smaller metal workpieces to be stuck, and the problem that the cover is not tightly closed due to long-term wear. No manual operation is required, and the whole process is automated, which reduces labor costs and improves production efficiency.

[0005] Technical Solution: To achieve the above-mentioned objectives, the present invention provides a coverless drum comprising a support and a drum body, the support and drum body being connected in a rolling manner. The drum body comprises a drum body and end caps disposed at each end of the drum body. The end caps are gear-shaped and have gear teeth disposed on their outer peripheries. The support is provided with a drive shaft, which is movably connected to the support shaft and provided with a drive gear. The drive shaft is keyed to the drive gear shaft, and the gear teeth disposed on the outer periphery of the drive gear mesh with gear teeth disposed on the outer peripheries of the end caps. The drum body has a spiral cross-section, and the drum body and the end caps define a cavity, which includes a feed channel and an immersion chamber. Material enters the immersion chamber from the feed channel for immersion. During the phosphating process, a metal workpiece is fed from the feed channel into the immersion chamber, and the drum body enters the phosphating liquid tank. When a motor connected to the drive shaft is activated, the motor drives the drive shaft to rotate, and the drive gear keyed to the drive shaft drives the end caps to rotate, thereby driving the drum body to rotate in the spiral direction of the drum body cross-section. For example, if the drum body cross-section is clockwise, the drum body rotates clockwise; otherwise, it rotates counterclockwise. During the immersion process, the metal workpiece is always turned over in the immersion chamber, and the surface of the metal workpiece is in full contact with the phosphating solution. After the phosphating is completed, the cylinder rotates in the opposite direction. If the cross section of the cylinder is a clockwise spiral, the cylinder rotates counterclockwise, otherwise it rotates in the opposite direction, and the metal workpiece is sent out from the feed channel. The utility model abandons the lid through the spiral cylinder design, avoiding the gap between the lid and the feed port, which makes it easy for smaller metal workpieces to be stuck, and the problem of the lid not closing tightly due to long-term wear. It ensures that the metal workpiece will not fall out during the phosphating process. When the phosphating is completed, the metal workpiece can be poured out of the drum by simply rotating the drum in the opposite direction. No manual operation is required throughout the process, which realizes the automation of the phosphating process, reduces labor costs, improves production efficiency, and protects the life and health of personnel.

[0006] Furthermore, in the aforementioned uncovered drum, the drum body comprises a plurality of long plates, two of which are connected along their long sides, and the plurality of long plates form a spiral fold line. During the drum body's rotation, the spiral fold line can carry the metal workpiece to a higher position than a circular arc, thereby improving the efficiency of metal workpiece turnover, leaching, and phosphating.

[0007] Furthermore, in the above-mentioned uncovered drum, in order to improve the structural strength of the drum body, the drum body includes ribs, which are arranged perpendicular to the long plates. The ribs are spiral-shaped in side view, and the long plates are spirally arranged along the inner wall of the ribs.

[0008] Furthermore, in the above-mentioned uncovered drum, in order to improve the immersion efficiency, the long plate is set to be a punched square plate.

[0009] Furthermore, in the above-mentioned uncovered drum, in order to improve the stability of the bracket, the bracket includes two parallel supporting plates, a pillar arranged between the two supporting plates, and both ends of the pillar are respectively connected to the supporting plates, and the pillar supports the supporting plates.

[0010] Furthermore, in the above-mentioned uncovered drum, pillars are arranged around the drum body, and the pillars are respectively connected to the four corners of the support plate.

[0011] Furthermore, in the above-mentioned uncovered drum, four pillars are provided on the upper side of the drum body, and support plates extend from both ends of the above-mentioned pillars.

[0012] Furthermore, in the above-mentioned uncovered drum, in order to increase the driving force of the driving gear, the number of teeth provided on the driving gear is smaller than the number of teeth provided on the outer periphery of the end cover.

[0013] Furthermore, in the above-mentioned uncovered drum, in order to improve the corrosion resistance of the uncovered drum and increase its service life, the material of the bracket and the drum is set to be 316L stainless steel.

[0014] As can be seen from the above technical solution, the present invention has the following beneficial effects: The coverless drum of the present invention avoids the problem of a gap between the lid and the feed port, which can easily trap small metal workpieces and cause the lid to not close tightly due to long-term wear. It ensures that metal workpieces will not fall out during the phosphating process. When phosphating is completed, the metal workpiece can be poured out of the drum by simply changing the rotation direction of the drum. No manual operation is required throughout the process, thus automating the phosphating process, reducing labor costs, improving production efficiency, and protecting the lives and health of personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view of the coverless roller of the utility model;

[0016] Figure 2 It is a side view of the coverless roller of the utility model.

[0017] In the figure: 1. bracket, 11. driving gear, 12. support plate, 13. pillar, 2. cylinder, 21. cylinder body, 211. long plate, 212. rib plate, 22. end cover, 23. cavity, 231. feed channel, 232. immersion chamber, 3. driving shaft. DETAILED DESCRIPTION

[0018] Example 1

[0019] like Figure 1The uncovered drum shown includes a bracket 1 and a cylinder 2, both made of 316L stainless steel. The bracket 1 and cylinder 2 are connected in a rolling manner. The cylinder 2 includes a barrel 21 and end caps 22 disposed at both ends of the barrel 21. The end caps 22 are gear-shaped and have gear teeth disposed on their outer circumferences. The bracket 1 is provided with a drive shaft 3, which is movably connected to the bracket 1. The drive shaft 3 is provided with a drive gear 11, which is keyed to the drive gear 11. The gear teeth disposed on the outer circumference of the drive gear 11 mesh with the gear teeth disposed on the outer circumference of the end caps 22. The number of teeth disposed on the drive gear 11 is less than the number of teeth disposed on the outer circumference of the end caps 22. The barrel 21 has a spiral cross-section and includes multiple long plates 211, each configured as a perforated square plate. Two long plates 211 are connected along their long sides, forming a spiral fold line. In order to improve the structural strength of the barrel 21, the barrel 21 includes a rib 212, which is arranged perpendicular to the long plate 211. The side view of the rib 212 is spiral-shaped, and the long plate 211 is spirally arranged along the inner wall of the rib 212. The bracket 1 includes two parallel support plates 12, and a pillar 13 provided between the two support plates 12. The two ends of the pillar 13 are respectively connected to the support plate 12, and the pillar 13 forms a support for the support plate 12. The pillar 13 is arranged around the barrel 2, and the pillar 13 is respectively connected to the four corners of the support plate 12. Four pillars 13 are provided on the upper side of the barrel 2, and the two ends of the above-mentioned pillars 13 extend out of the support plate 12 respectively. The barrel 21 and the end cover 22 form a cavity 23, and the cavity 23 includes a feed channel 231 and an immersion chamber 232. The material enters the immersion chamber 232 from the feed channel 231 for immersion.

[0020] During the phosphating process, the metal workpiece is fed into the immersion chamber 232 through the feed channel 231, and the barrel 2 enters the phosphating solution tank. The motor connected to the drive shaft 3 is started, and the motor drives the drive shaft 3 to rotate. The drive gear 11 connected to the drive shaft 3 axis key drives the end cap 22 to rotate. The end cap 22 drives the barrel 21 to rotate along the spiral direction of the barrel 21 cross section (if the cross section of the barrel 21 is a clockwise spiral, the barrel 2 rotates clockwise; otherwise, it rotates in the opposite direction). During the immersion process, the metal workpiece is constantly turned in the immersion chamber 232, and the surface of the metal workpiece is fully contacted with the phosphating solution. When the phosphating is completed, the barrel 2 rotates in the opposite direction (if the cross section of the barrel 21 is a clockwise spiral, the barrel 2 rotates counterclockwise; otherwise, it rotates in the opposite direction), and the metal workpiece is discharged from the feed channel 231.

[0021] The above embodiments are illustrative and intended to illustrate the technical concepts and features of the present invention so that those skilled in the art can understand the present invention and implement it accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A coverless drum, characterized in that: The invention comprises a support (1) and a cylinder (2), wherein the support (1) and the cylinder (2) are connected in a rolling manner, the cylinder (2) comprises a cylinder body (21) and end covers (22) provided at both ends of the cylinder body (21), the end covers (22) are gear-shaped, and gear teeth are provided on the outer periphery of the end covers (22), the support (1) is provided with a drive shaft (3), the drive shaft (3) and the support (1) are movably connected, the drive shaft (3) is provided with a drive gear (11), the drive shaft (3) and the drive gear (11) are key-connected, and the gear teeth provided on the outer periphery of the drive gear (11) are meshed with the gear teeth provided on the outer periphery of the end covers (22); the cross section of the cylinder body (21) is spiral-shaped, the cylinder body (21) and the end covers (22) form a cavity (23), and the cavity (23) comprises a feed channel (231) and an immersion chamber (232), and the material enters the immersion chamber (232) from the feed channel (231) for immersion.

2. The coverless drum according to claim 1, characterized in that: The barrel (21) comprises a plurality of long plates (211), two of the long plates (211) are connected along a long side, and the plurality of long plates (211) form a spiral fold line.

3. The coverless drum according to claim 2, characterized in that: The barrel (21) comprises a rib plate (212), and the rib plate (212) is arranged perpendicular to the long plate (211); the rib plate (212) is spiral-shaped in a side view, and the long plate (211) is spirally arranged along the inner wall of the rib plate (212).

4. The coverless drum according to claim 2, characterized in that: The long plate (211) is configured as a punched square plate.

5. The coverless drum according to claim 1, characterized in that: The bracket (1) comprises two support plates (12) arranged in parallel, and a support column (13) arranged between the two support plates (12). Both ends of the support column (13) are respectively connected to the support plates (12), and the support column (13) supports the support plates (12).

6. The coverless drum according to claim 5, characterized in that: The pillars (13) are arranged around the cylinder (2), and the pillars (13) are respectively connected to the four corners of the support plate (12).

7. The coverless drum according to claim 6, characterized in that: Four pillars (13) are provided on the upper side of the cylinder (2), and both ends of the pillars (13) extend out of the support plates (12).

8. The coverless drum according to claim 1, characterized in that: The number of teeth provided on the driving gear (11) is smaller than the number of teeth provided on the outer periphery of the end cover (22).

9. The coverless drum according to claim 1, characterized in that: The support (1) and the cylinder (2) are made of 316L stainless steel.

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