Metal pipe end face burr removing mechanism

Abstract

This utility model relates to the field of metal pipe processing technology, specifically to a metal pipe end face deburring mechanism. It includes two chain teeth rotatably mounted on a steel brush roller machine and a chain sleeved between the two chain teeth, serving as a drive component to drive the corresponding two chain teeth on the two steel brush roller machines to rotate synchronously; and several limiting parts circumferentially mounted on the chain, each including two arc-shaped blocks opposite to each other on the outside of the chain and a pusher component for movably connecting the two arc-shaped blocks. This utility model utilizes a side gear in the pusher component that meshes with an upper fixed rack and a lower fixed rack before and after deburring the metal pipe. The chain movement drives the side gear to move synchronously, causing the side gear to rotate in opposite directions when passing through the racks, thus achieving stable limiting and unloading of the metal pipe. Combined with the upward lifting effect of the self-rotating drive component, this achieves contact limiting and drives stable self-rotation of the metal pipe, maintaining the stability of the deburring effect during long-term operation.

Description

Technical Field

[0001] This utility model relates to the field of metal pipe processing technology, and in particular to a burr removal mechanism for the end face of a metal pipe. Background Technology

[0002] During the initial production process, metal pipes are typically 4 to 12 meters in length. In the later finishing stages, they can be cut to different lengths according to actual usage requirements. After being cut to a fixed length, the cross-section of the metal pipe will have many burrs. To ensure safety during subsequent use, a fully automatic double-head deburring machine is generally used to remove these burrs.

[0003] Existing fully automatic double-head deburring machines utilize two steel brush rollers mounted opposite each other on a base. A chain conveyor assembly is installed on the opposite surfaces of the two rollers, with several equidistant limit blocks on the chain. Adjacent limit blocks form placement areas, allowing the two ends of a metal pipe to be placed within these areas on the rollers. During transport, friction strips parallel to the chain cause the metal pipe to rotate, and as it passes through the brush roller area, the steel brushes remove burrs from the pipe's cross-section. However, during transport, the metal pipe is prone to vibration due to uneven stress and poor fixation, affecting its rotation and consequently the deburring effect. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a burr removal mechanism for the end face of a metal tube, so as to solve the problem that the metal tube is prone to shaking due to uneven force and poor fixing effect, which affects the rotation of the metal tube and thus affects the deburring effect of the metal tube cross-section.

[0005] Based on the above objectives, this utility model provides a metal pipe end face burr removal mechanism, including two chain teeth rotatably mounted on a steel brush roller machine and a chain sleeved between the two chain teeth, for driving the corresponding two chain teeth on the two steel brush roller machines to rotate synchronously. A plurality of limiting parts circumferentially disposed on the chain, including two arc-shaped blocks disposed opposite to the outside of the chain and a pusher for movably connecting the two arc-shaped blocks; The upper and lower fixed racks on the steel brush roller machine, when the pusher passes over the upper and lower fixed racks once, drive the two arc-shaped blocks to move closer or further apart through the relative movement of the pusher and the two racks, thereby limiting or feeding the metal tube; An extension seat fixed on the steel brush roller machine corresponding to the deburring position; A floating drive unit, located on an extension base, drives the metal tube to rotate stably as it passes the top of the floating drive unit.

[0006] Preferably, the pushing component includes two support blocks fixedly disposed on the outside of the chain and a bidirectional lead screw rotatably disposed between the two support blocks. Two slides are threadedly mounted on the bidirectional lead screw. An end gear is coaxially fixed on the end face of the bidirectional lead screw away from the steel brush roller machine. A side gear is rotatably disposed on the chain. The tooth surface of the side gear meshes with the tooth surface of the end gear. Two connecting arms are hinged to each other on the slides. One end of each connecting arm is hinged to an arc-shaped block, and the four connecting arms and the two arc-shaped blocks together form a hexagon.

[0007] Preferably, the side gears at the top and bottom of one side of the chain are located above the upper and lower fixed racks, respectively, and the side gears are located on the side of the chain away from the steel brush roller machine.

[0008] Preferably, the threads at both ends of the bidirectional lead screw are in opposite directions, and the distance between the outer side of the bidirectional lead screw and the center of the arc-shaped block is greater than the radius corresponding to the inner wall of the arc-shaped block.

[0009] Preferably, the upper and lower fixed racks have the same structure. The upper fixed rack includes a bracket fixed to the outside of the steel brush roller machine and a transverse rack detachably installed on the bracket, and the bracket is located between the top and bottom of the chain.

[0010] Preferably, the upper and lower fixed racks are located close to two chain teeth, and the upper and lower fixed racks are located close to the top and bottom of the chain, respectively.

[0011] Preferably, the upper and lower fixed racks are located upstream and downstream of the chain feed pipe in the transverse direction, respectively, and are also located on both sides of the deburring station in the transverse direction.

[0012] Preferably, the opposing surfaces of the two arc blocks are both arc surfaces, and the arc length of the arc surface is greater than the arc length of a 90° arc and less than the arc length of a 150° arc.

[0013] Preferably, the floating drive unit includes a telescopic rack and a telescopic seat arranged side by side on the top of the extension seat. The top of the telescopic rack is fixedly provided with an inclined guide block, and the top of the telescopic seat is provided with a self-rotating drive component. A linkage component is provided between the telescopic rack and the telescopic seat, and the linkage component is used to link the telescopic seat and the telescopic rack to extend and retract synchronously.

[0014] Preferably, the telescopic rack includes a fixed sleeve fixed to the top of the extension seat and a vertical rack that is vertically slidably sleeved inside the fixed sleeve. The fixed sleeve is provided with a compression spring, and the top and bottom ends of the compression spring are respectively fixedly connected to the bottom of the vertical rack and the bottom of the inside of the fixed sleeve.

[0015] The beneficial effects of this utility model are: 1. This utility model uses a side gear in the pusher to mesh with the upper and lower fixed racks before and after deburring the metal tube. The movement of the chain drives the side gear to move synchronously, so that the rotation direction of the side gear is opposite when passing through the two racks, thereby achieving stable positioning and unloading of the metal tube. Combined with the upward lifting effect of the self-rotating drive during deburring, the metal tube is stopped and its stable self-rotation is driven. During long-term repeated deburring, the stability of the deburring effect of the metal tube is maintained. 2. This utility model, through the detachable connection between the horizontal rack and the bracket, allows for the coordinated replacement of horizontal racks of different lengths according to the diameter of the metal tube to be limited, so that the limiting part can limit metal tubes of different diameters. In addition, it can leave a small gap between the inner arc surface of the arc block and the metal tube, so as to facilitate the subsequent stable rotation of the metal tube while maintaining the stability of the limiting of the metal tube. Furthermore, it can maintain the stability of the deburring effect of the metal tube during long-term repeated deburring process. 3. By setting up a floating drive unit, this utility model can automatically adapt to metal tubes of different diameters when the diameter of the metal tube changes, so as to expand its application range while maintaining the stable rotation of the driven metal tube. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional illustration of the present invention. Figure 1 ; Figure 2 This is a three-dimensional illustration of the present invention. Figure 2 ; Figure 3 This is a three-dimensional illustration of the present invention. Figure 3 ; Figure 4 This is a three-dimensional illustration of the present invention. Figure 4 ; Figure 5 for Figure 4 An enlarged schematic diagram of part A in the middle; Figure 6 This is a three-dimensional illustration of the present invention. Figure 5 .

[0018] The diagram is marked as follows: 1. Chain teeth; 2. Limiting part; 21. Arc block; 22. Pushing part; 221. Side gear; 222. Double-acting lead screw; 223. End gear; 224. Slide; 225. Connecting arm; 226. Support block; 23. Upper fixed rack; 231. Bracket; 232. Horizontal rack; 24. Lower fixed rack; 3. Chain; 4. Driving part; 5. Extension seat; 6. Floating driving part; 61. Inclined guide block; 62. Telescopic rack; 621. Fixed sleeve; 622. Vertical rack; 63. Telescopic seat; 64. Rotation driving part; 65. Linkage part; 651. Connecting plate; 652. Linkage tooth; 653. Through slot. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0020] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] like Figures 1 to 6 As shown, a metal pipe end face burr removal mechanism includes two chain teeth 1 rotatably mounted on a steel brush roller machine and a chain 3 sleeved between the two chain teeth 1. A drive component 4 is used to drive the corresponding two chain teeth 1 on the two steel brush roller machines to rotate synchronously. The drive component 4 includes a spline hole coaxially mounted on one of the chain teeth 1. A spline shaft is inserted between the spline holes on the corresponding chain teeth 1 on the two steel brush roller machines. One of the steel brush roller machines is equipped with a drive motor for driving the spline shaft to rotate, so that the chains 3 on the two steel brush roller machines can operate synchronously.

[0022] Several limiting parts 2 are circumferentially arranged on the chain 3, including two arc-shaped blocks 21 opposite to each other on the outside of the chain 3 and a pusher 22 for movably connecting the two arc-shaped blocks 21. The opposite surfaces of the two arc-shaped blocks 21 are both arc surfaces. The arc length of the arc surface is greater than the arc length of a 90° arc and less than the arc length of a 150° arc. This design maximizes the minimum distance between the two arc-shaped blocks 21 while maintaining a large overlap area between the arc-shaped blocks 21 and the metal tube, so that the metal tube can fall between the two arc-shaped blocks 21 and be stably limited.

[0023] The upper fixed rack 23 and lower fixed rack 24 on the steel brush roller machine, when the pusher 22 passes the upper fixed rack 23 and lower fixed rack 24 once, drive the two arc-shaped blocks 21 to move closer or further away from each other through the relative movement of the pusher 22 and the two, and make the arc-shaped blocks 21 have a smaller gap with the outside of the metal tube, so as to facilitate the subsequent rotation of the metal tube and realize the limiting or unloading of the metal tube.

[0024] An extension seat 5 is fixed on the steel brush roller machine, corresponding to the deburring position.

[0025] The floating drive unit 6 is provided on the extension seat 5. When the metal tube passes the top of the floating drive unit 6, it drives the metal tube to rotate stably. It also works with the limiting unit 2 to limit the end of the metal tube so as to stabilize the end of the metal tube during deburring and prevent the end of the metal tube from shaking, which would affect its rotation stability and the deburring effect.

[0026] like Figures 1 to 5 As shown, the pusher 22 includes two support blocks 226 fixedly disposed outside the chain 3 and a bidirectional lead screw 222 rotatably disposed between the two support blocks 226. The threads at both ends of the bidirectional lead screw 222 are opposite in direction, and the distance between the outer side of the bidirectional lead screw 222 and the center of the arc block 21 is greater than the radius corresponding to the inner wall of the arc block 21. This avoids the problem of the metal tube abutting against the bidirectional lead screw 222 and affecting the limiting effect when limiting a metal tube whose diameter is close to the arc surface diameter of the arc block 21. Two slides 224 are installed on the bidirectional lead screw 222 with opposite threads. An end gear 223 is coaxially fixed on the end face of the chain 3 away from the steel brush roller machine. A side gear 221 is rotatably mounted on the chain 3. The top and bottom side gears 221 on one side of the chain 3 are located above the upper fixed rack 23 and the lower fixed rack 24, respectively. The side gear 221 is located on the side of the chain 3 away from the steel brush roller machine. The tooth surface of the side gear 221 meshes with the tooth surface of the end gear 223. Two connecting arms 225 are hinged to each other on the slide 224. One end of the connecting arm 225 is hinged to the arc block 21, and the four connecting arms 225 and the two arc blocks 21 together form a hexagon.

[0027] After the metal tube is placed between the two arc-shaped blocks 21, the drive unit 4 drives the chain 3 to rotate, causing the two arc-shaped blocks 21 and the metal tube to move synchronously. When the side gear 221 passes over the upper fixed rack 23, the relative movement between the two drives the side gear 221 to rotate, which in turn drives the double-acting screw 222 to rotate through the end gear 223. This causes the double-acting screw 222 to drive the two slide blocks 224 away from each other and pull the two arc-shaped blocks 21 closer together through the connecting arm 225, until the end of the metal tube is restricted. A small gap is left between the outside of the metal tube and the arc surface of the arc-shaped block 21 to prevent the metal tube from being fixed. Then, after the metal tube contacts the floating drive unit 6, it will lift the metal tube by a small distance, so that the metal tube contacts the arc surface of the arc-shaped block 21 with a small area, further restricting the end of the metal tube, improving the stability of the metal tube when it rotates, and preventing the metal tube from being damaged by force. The vibration caused by the chain 3 affects the deburring effect on the metal tube cross-section during long-term repeated operation. At the same time, the chain 3 drives the metal tube to move gradually from the horizontal diameter of the steel brush roller of the steel brush roller machine along its axial direction. During this process, the steel brush bristles on the high-speed rotating steel brush roller will hit the burrs on the metal tube cross-section. With the rotation of the metal tube, the burrs on the metal tube cross-section are removed stably and comprehensively. After the burrs are removed, when the metal tube is driven to the lower fixed rack 24, the side gear 221 passes over the lower fixed rack 24 and drives the bidirectional lead screw 222 to rotate in the opposite direction and drive the two slides 224 to move closer to each other. Through the connecting arm 225, the two arc blocks 21 are pushed away from each other, releasing the metal tube and completing the unloading of the metal tube. This process is repeated to continuously deburr and grind multiple metal tubes, improving the stability of the deburring effect when the steel brush roller machine is running for a long time.

[0028] like Figure 3 and Figure 4 As shown, the upper fixed rack 23 and the lower fixed rack 24 have the same structure. The upper fixed rack 23 includes a bracket 231 fixed to the outside of the steel brush roller machine and a transverse rack 232 detachably installed on the bracket 231. The transverse rack 232 is fixed to the bracket 231 by bolts, and the bracket 231 is located between the top and bottom of the chain 3. This design allows for the replacement of a matching transverse rack 232 in advance when the diameter of the metal tube changes. When the two arc blocks 21 approach each other and limit the metal tube, the reserved gap between the metal tube and the arc surface of the arc block 21 remains similar, maintaining the stability and limiting effect of the metal tube during rotation.

[0029] like Figures 1 to 4 As shown, the upper fixed rack 23 and the lower fixed rack 24 are close to the two chain teeth 1 respectively, and the upper fixed rack 23 and the lower fixed rack 24 are close to the top and bottom of the chain 3 respectively.

[0030] The upper fixed rack 23 and the lower fixed rack 24 are located upstream and downstream of the feed pipe of the chain 3 in the transverse direction, and the upper fixed rack 23 and the lower fixed rack 24 are also located on both sides of the deburring station in the transverse direction.

[0031] This design allows for sequential positioning of the metal tubes, driving them to rotate at the deburring station, and finally releasing them to complete the unloading process after deburring. Then, the chain 3 drives the arc block 21 to move back to the metal tube placement position, and this process is repeated to achieve continuous and stable deburring of several metal tubes. This improves the stability of the metal tubes during the process and prevents them from shaking and tilting due to uneven force, which would affect the deburring effect.

[0032] like Figure 1 , Figure 2 and Figure 6 As shown, the floating drive unit 6 includes a telescopic rack 62 and a telescopic seat 63 arranged side by side on the top of the extension seat 5. The telescopic seat 63 includes a support sleeve that fixes the top of the extension seat 5 and a slider that is slidably sleeved inside the support sleeve. The side of the slider near the telescopic rack 62 is a toothed surface. An inclined guide block 61 is fixedly provided on the top of the telescopic rack 62. The top of the inclined guide block 61 consists of an inclined surface and a horizontal surface. The inclined surface faces the upper fixed rack 23. When the chain 3 drives the metal tube to approach the inclined guide block 61, the outside of the metal tube abuts against the inclined surface of the inclined guide block 61, so as to convert the lateral thrust of the metal tube against the inclined guide block 61 into a downward thrust, driving the inclined guide block 61 to move down until the outside of the metal tube abuts against the horizontal surface of the top of the inclined guide block 61. The top of the telescopic seat 63 is provided with a self-rotating drive member 64. The self-rotating drive member 64 includes a mounting groove provided on the top of the slider. Rollers are rotatably provided at both ends inside the mounting groove. The distance between the two rollers is greater than the distance between two adjacent metal tubes on the chain 3. A rubber belt is fitted around the outside of the rollers. A flat-top block is provided on one end of the slider near the inclined guide block 61. The top of the flat-top block is flush with the horizontal plane of the top of the inclined guide block 61, and one side of the flat-top block is attached to the vertical plane of the inclined guide block 61 opposite to it, so that the metal tube can be smoothly transferred onto the rubber belt. A servo motor is provided on the slider to drive one of the rollers to rotate. The surface of the rubber belt provides a large friction force when it contacts the outside of the metal tube, so that the rotating rubber belt can drive the metal tube to rotate. When deburring metal tubes of the same batch and specifications continuously, after the first metal tube comes into contact with the rubber belt, the top of the metal tube will always be in contact with the rubber belt during subsequent deburring, keeping the height of the rubber belt stable and avoiding its reciprocating movement from affecting the stability of the metal tube deburring. A linkage 65 is provided between the telescopic rack 62 and the telescopic seat 63. The linkage 65 is used to link the telescopic seat 63 and the telescopic rack 62 to extend and retract synchronously.

[0033] The telescopic rack 62 includes a fixed sleeve 621 fixed to the top of the extension seat 5 and a vertical rack 622 vertically slidably sleeved inside the fixed sleeve 621. The fixed sleeve 621 is provided with a compression spring, and the top and bottom ends of the compression spring are fixedly connected to the bottom of the vertical rack 622 and the bottom inside the fixed sleeve 621, respectively.

[0034] The linkage 65 includes a connecting plate 651 vertically fixed between the opposing surfaces of the support sleeve and the fixed sleeve 621. Two linkage teeth 652 are rotatably provided on the fixed plate 651. The opposing tooth surfaces of the two linkage teeth 652 mesh with each other. The opposing surfaces of the support sleeve and the fixed sleeve 621 are provided with through grooves 653. The tooth surfaces of the two linkage teeth 652 pass through the interior of the through grooves 653 and mesh with the tooth surfaces on the slider and the vertical rack 622. In this way, when the metal tube presses down on the inclined guide block 61 and moves down, the power transmission of the two linkage teeth 652 can realize the synchronous driving of the slider to move down, further maintaining the stability of the metal tube during deburring and rotation.

[0035] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0036] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A burr removal mechanism for the end face of a metal pipe, comprising two chain teeth (1) rotatably mounted on a steel brush roller machine and a chain (3) sleeved between the two chain teeth (1), and a driving component (4) for driving the corresponding two chain teeth (1) on the two steel brush roller machines to rotate synchronously, characterized in that: A plurality of limiting parts (2) are circumferentially provided on the chain (3), including two arc-shaped blocks (21) disposed opposite to the outside of the chain (3) and a pusher (22) for movably connecting the two arc-shaped blocks (21). The upper fixed rack (23) and lower fixed rack (24) on the steel brush roller machine, when the pusher (22) passes through the upper fixed rack (23) and lower fixed rack (24) once, the relative movement of the pusher (22) and the two drives the two arc blocks (21) to move closer or further away from each other, thereby limiting or unloading the metal tube; An extension seat (5) is fixed on the steel brush roller machine corresponding to the deburring position; The floating drive unit (6) is provided on the extension seat (5) and drives the metal tube to rotate stably when the metal tube passes the top of the floating drive unit (6).

2. The metal tube end face burr removal mechanism according to claim 1, characterized in that, The pusher (22) includes two support blocks (226) fixedly disposed on the outside of the chain (3) and a bidirectional lead screw (222) rotatably disposed between the two support blocks (226). Two slides (224) are threadedly mounted on the bidirectional lead screw (222). An end gear (223) is coaxially fixed on the end face of the bidirectional lead screw (222) away from the steel brush roller machine. A side gear (221) is rotatably disposed on the chain (3). The tooth surface of the side gear (221) meshes with the tooth surface of the end gear (223). Two connecting arms (225) are hinged to each other on the slide (224). One end of the connecting arm (225) is hinged to the arc block (21), and the four connecting arms (225) and the two arc blocks (21) together form a hexagon.

3. The metal tube end face burr removal mechanism according to claim 2, characterized in that, The side gears (221) at the top and bottom of one side of the chain (3) are located above the upper fixed rack (23) and the lower fixed rack (24), respectively, and the side gears (221) are located on the side of the chain (3) away from the steel brush roller machine.

4. The metal tube end face burr removal mechanism according to claim 2, characterized in that, The threads at both ends of the bidirectional lead screw (222) are opposite, and the distance between the outer side of the bidirectional lead screw (222) and the center of the arc block (21) is greater than the radius corresponding to the inner wall of the arc block (21).

5. The metal tube end face burr removal mechanism according to claim 1, characterized in that, The upper fixed rack (23) and the lower fixed rack (24) have the same structure. The upper fixed rack (23) includes a bracket (231) fixed to the outside of the steel brush roller machine and a horizontal rack (232) detachably installed on the bracket (231). The bracket (231) is located between the top and bottom of the chain (3).

6. The metal tube end face burr removal mechanism according to claim 1, characterized in that, The upper fixed rack (23) and the lower fixed rack (24) are respectively close to the two chain teeth (1), and the upper fixed rack (23) and the lower fixed rack (24) are respectively close to the top and bottom of the chain (3).

7. The metal tube end face burr removal mechanism according to claim 6, characterized in that, The upper fixed rack (23) and the lower fixed rack (24) are located upstream and downstream of the feed pipe of the chain (3) in the transverse direction, and the upper fixed rack (23) and the lower fixed rack (24) are also located on both sides of the deburring station in the transverse direction.

8. The metal tube end face burr removal mechanism according to claim 1, characterized in that, The opposing surfaces of the two arc blocks (21) are both arc surfaces, and the arc length of the arc surface is greater than the arc length of a 90° arc and less than the arc length of a 150° arc.

9. The metal tube end face burr removal mechanism according to claim 1, characterized in that, The floating drive unit (6) includes a telescopic rack (62) and a telescopic seat (63) arranged side by side on the top of the extension seat (5). The top of the telescopic rack (62) is fixedly provided with an inclined guide block (61), and the top of the telescopic seat (63) is provided with a self-transmission drive component (64). A linkage component (65) is provided between the telescopic rack (62) and the telescopic seat (63). The linkage component (65) is used to link the telescopic seat (63) and the telescopic rack (62) to extend and retract synchronously.

10. The metal tube end face burr removal mechanism according to claim 9, characterized in that, The telescopic rack (62) includes a fixed sleeve (621) fixed to the top of the extension seat (5) and a vertical rack (622) vertically slidably sleeved inside the fixed sleeve (621). The fixed sleeve (621) is provided with a compression spring. The top and bottom ends of the compression spring are fixedly connected to the bottom of the vertical rack (622) and the bottom inside the fixed sleeve (621), respectively.

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