Tube cover chamfering machine

Abstract

The present invention relates to the technical field of chamfering, and specifically to a pipe cover chamfering machine, comprising: a frame, provided with a feeding channel and a feeding channel that are interconnected, the feeding channel having a feeding starting position and a chamfering processing position; a feeding unit, comprising a slide plate, a push plate and a lower support plate that slide laterally along the feeding channel; a clamping unit, comprising a first rolling body installed on the push plate and rollingly fitting the circumferential surface of the pipe cover in a clamped state, a second rolling body that is arranged at the chamfering processing position and rollingly fitting the circumferential surface of the pipe cover in a clamped state, and a movable clamping assembly and a rotating support assembly that are arranged at the front and rear sides of the chamfering processing position; a rotating drive unit, comprising a driving wheel that is frictionally braked with the circumferential surface of the pipe cover. The first rolling body of the feeding unit of the present invention that reciprocates laterally along the feeding channel and is installed at one end thereof serves as both an executive component of the feeding unit and an important component of the clamping unit, thereby realizing the organic integration of feeding and clamping, with a simple structure and optimized process.

Description

Technical Field

[0001] The invention relates to the technical field of chamfering processing, and in particular to a pipe cover chamfering machine. Background Art

[0002] The pipe cap is a cover used to seal the end of the pipe body. It is a common accessory in fitness equipment. Its general structure is a circumferential side surface and an axial A end surface connected to one side of the circumferential side surface, and the side of the circumferential side surface away from the axial A end surface forms an axial B end surface. In actual processing and assembly, the axial B end surface needs to be chamfered. During chamfering, a chuck is generally used to clamp the pipe cap, and then the chuck is driven to rotate to drive the pipe cap to rotate. The chamfering head contacts the axial B end surface, and the chamfered structure is processed on the axial B end surface as the pipe cap rotates. On the one hand, this clamping mechanism has high requirements for the installation posture of circular workpieces such as pipe caps on the chuck. If the posture is skewed, the chamfer on the end surface is uneven. On the other hand, it is easy to cause mechanical damage to the circumferential surface of the pipe cap, and it is difficult to realize automatic loading and feeding. Even if automatic loading and feeding are possible, the structure is relatively complicated. The feeding part and the clamping part work independently and perform their respective functions, and it is difficult to form an organic whole. Summary of the invention

[0003] The object of the present invention is to provide a pipe cover chamfering machine, which organically integrates feeding and clamping, has a simple structure, optimizes the process, has good consistency in the position of the pipe cover and uniform chamfering.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] Tube cover chamfering machine, including:

[0006] The frame is provided with a feeding channel and a feeding channel which are interconnected, the feeding channel is arranged horizontally, and the feeding channel has a feeding starting position located at the junction with the feeding channel and a chamfering position located on a lateral side of the feeding starting position;

[0007] The feeding unit comprises a slide plate, a push plate and a lower support plate which are arranged on the frame and are driven by a driving mechanism to slide transversely along the feeding channel, wherein the push plate protrudes from one side of the slide plate toward the chamfering processing position, and the lower support plate protrudes from one side of the push plate toward the chamfering processing position;

[0008] The clamping unit includes a first rolling body installed on the side of the push plate close to the chamfering processing position and rollingly fitting the circumferential surface of the tube cover in the clamping state, a second rolling body installed at the chamfering processing position and rollingly fitting the circumferential surface of the tube cover in the clamping state, and a movable clamping assembly and a rotating support assembly installed at the front and rear sides of the chamfering processing position;

[0009] A rotary drive unit, comprising a drive wheel driven to rotate by a rotary motor and frictionally braked with a circumferential surface of the pipe cover;

[0010] The chamfering unit can be rotatably mounted on the frame and is used to perform chamfering on the pipe cover at the chamfering processing position.

[0011] Preferably, the feeding channel is composed of a fixed back plate and a fixed front plate installed on the frame, and the slide plate, the push plate and the lower support plate are all located between the fixed back plate and the fixed front plate.

[0012] Preferably, the upper end of the slide plate near the chamfering position is formed with a support portion whose arc line matches the circumferential surface of the tube cover, and the upper end of the fixed back plate at the feeding starting position is higher than the support portion of the slide plate.

[0013] Preferably, the distance between the first rolling body and the slide plate is smaller than the diameter of the tube cover and / or the spatial distance between the push plate and the fixed back plate is larger than the width of the circumferential surface of the tube cover.

[0014] Preferably, a fixed groove rail is fixedly mounted on the frame, and one side of the fixed front plate extends upward to the opening side of the fixed groove rail and forms a feeding channel with the fixed groove rail.

[0015] Preferably, the width of the feeding channel is greater than the axial width of the tube cover, the front side of the fixed back plate is a vertical surface parallel to the lateral direction of the slide plate, and the bottom surface of the end groove of the fixed groove rail is flush with or protrudes relative to the front side of the fixed back plate.

[0016] Preferably, the movable clamping assembly includes a clamping cylinder and a clamping actuator, the clamping actuator is rotatably mounted on the end of the piston rod of the clamping cylinder through a bearing, the clamping actuator corresponds to the center of the tube cover and rotates with the tube cover in the clamped state.

[0017] Preferably, the rotating support assembly is provided with four groups, all of which are arranged obliquely and the center of the tube cover is projected onto the axis extension line of the installation shaft. The supporting surface of the rotating support assembly in contact with the tube cover protrudes forward by 0-2mm relative to the front side of the fixed back plate.

[0018] Preferably, each rotating support assembly comprises two mounting seats, a mounting shaft mounted between the two mounting seats, and a plurality of third rolling bodies sleeved on the mounting shaft, wherein the supporting surfaces of the third rolling bodies are in rolling contact with the pipe cover.

[0019] Preferably, the chamfering unit includes a chamfering motor, a chamfering cutter head, a combination seat body and a driving cylinder, the cylinder body of the driving cylinder is hinged on the frame and the end of its piston rod is hinged to the combination seat body, the combination seat body is rotatably mounted on the frame, the chamfering motor is mounted on the combination seat body and the chamfering cutter head is mounted on its output shaft.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The tube cover chamfering machine of the present invention comprises a feeding unit, a clamping unit and a rotating driving unit. The feeding unit reciprocates laterally along the feeding channel and the first rolling body installed at one end thereof serves as both an executive component of the feeding unit and an important component of the clamping unit, thereby realizing the organic integration of feeding and clamping, with a simple structure and an optimized process. When the first rolling body is in the chamfering processing position, the next tube cover is supported by a slide plate and maintained in a waiting position in the feeding channel. When the processing of the previous tube cover is completed, the first rolling body returns from the chamfering processing position to the feeding starting position. Since the push plate is on one side of the slide plate and still blocks the tube cover in the waiting position, the tube cover in the waiting position will not fall off until the first rolling body moves to the side of the feeding starting position, freeing up the space at the junction of the feeding channel and the feeding channel so that the tube cover slides into the feeding starting position by its own weight and is prevented from falling out of the feeding channel by the lower support plate. Then, the driving mechanism drives the tube cover in the reverse direction to be pushed to the chamfering processing position. The support plate supports the tube cover from bottom to top and limits and guides the tube cover through the front and rear limiters of the feeding channel, thereby ensuring that the tube cover does not get stuck during the feeding process from the feeding starting position to the chamfering processing position, and because the rotating support assembly on the chamfering processing position is inclined, the tube cover can be smoothly guided to the chamfering processing position through rolling and its arc-shaped guiding surface; after the tube cover is delivered to the chamfering processing position, the X-axis coordinate, Y-axis coordinate and Z-axis coordinate as well as the vertical posture of the tube cover at the chamfering processing position are jointly achieved through the first rolling body, the second rolling body, the movable clamping assembly and the rotating support assembly, the rotary drive unit starts to drive the tube cover to rotate with small rotational resistance, the chamfering unit switches to the working position to chamfer the rotating tube cover, and the chamfer is uniform; after the chamfering is completed, the rotary drive unit stops, the chamfering unit stops and switches to leave the working position, the first rolling body and the movable clamping assembly are reset in reverse to release the tube cover, and the lower support plate also leaves the chamfering processing position to complete the unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional diagram of the pipe cover chamfering machine of the present invention.

[0023] Figure 2 It is a schematic diagram of the structure of the loading channel and the feeding channel of the present invention.

[0024] Figure 3 This is a schematic diagram of the structure of the pipe cover chamfering machine after ignoring the frame in the present invention.

[0025] Figure 4 It is a schematic diagram of the structure of the feeding unit of the present invention.

[0026] Figure 5 It is a schematic diagram of the cooperation between the feeding unit and the clamping unit in the clamping state of the present invention.

[0027] Figure 6 It is a schematic diagram of the structure of the rotary support assembly of the present invention.

[0028] Markings in the figure: 100, pipe cover; 11, mounting seat plate; 12, fixed groove rail; 13, fixed back plate; 14, fixed front plate; 15, mounting vertical plate; 21, slide plate; 22, push plate; 23, lower support plate; 24, transverse cylinder; 31, first rolling body; 32, second rolling body; 41, clamping cylinder; 42, clamping actuator; 51, mounting seat; 53, third rolling body; 61, driving wheel; 71, driving cylinder; 72, combined seat body; 73, chamfering motor. DETAILED DESCRIPTION

[0029] In order to make the above features and advantages of the present invention more obvious and easy to understand, embodiments are given below with reference to the accompanying drawings for detailed description as follows.

[0030] like Figure 1-Figure 6 As shown, this embodiment provides a pipe cover chamfering machine, which is used to process a circle of chamfers on the pipe cover 100. The pipe cover chamfering machine includes a frame, the frame includes a stand and a mounting base plate 11 fixedly mounted on the rear side of the stand, and a loading channel and a feeding channel that are interconnected are formed in front of the mounting base plate 11. The feeding channel is arranged horizontally, and the feeding channel has a feeding starting position located at the junction with the loading channel and a chamfering processing position located on the lateral side of the feeding starting position. Specifically, the chamfering processing position of this embodiment is located on the right side of the feeding starting position, while in some other examples, the chamfering processing position can also be on the left side of the feeding starting position. The loading channel has a waiting position near the junction with the feeding channel. When the pipe cover 100 is fed and chamfered, the next pipe cover 100 is in the waiting position waiting for the next cycle of processing.

[0031] Regarding the construction of the loading channel and the feeding channel, specifically: the mounting seat plate 11 is fixedly installed with a fixed back plate 13 through an intermediate rod, and in this embodiment, a fixed groove rail 12 is fixedly installed on the upper rear side of the stand through an intermediate piece and is located in front of the fixed back plate 13, and a fixed front plate 14 is fixedly installed on the front side of the stand through an intermediate tube and is located in front of the fixed back plate 13, and the left end of the fixed front plate 14 also extends upward in front of the fixed groove rail 12, and the feeding channel is formed between the fixed back plate 13 and the fixed front plate 14, and the loading channel is formed between the fixed front plate 14 and the fixed groove rail 12.

[0032] The fixed groove rail 12 is a U-shaped groove structure. Preferably, the fixed groove rail 12 is set vertically. The pipe cover 100 slides into the feeding starting position from the feeding channel by its own weight and is then pushed horizontally to the chamfering processing position. In fact, the fixed groove rail 12 is a U-shaped groove structure that is sufficient to form a feeding channel. The reason why the left end of the fixed front plate 14 is extended upward is that on the one hand, it can cooperate with the fixed groove rail 12 to form a feeding channel, and on the other hand, the fixed front plate 14 can be used to prevent the pipe cover 100 from falling out of the open side of the fixed groove rail 12. In addition, in order to facilitate the placement of the pipe cover 100 into the feeding channel, the upper end of the fixed front plate 14 and the upper end of the fixed groove rail 12 are both open to the outside to form an introduction port. It should be noted that in some other examples, the fixed groove rail 12 can also be set at an angle.

[0033] In order to push the pipe cover 100 from the feeding position to the chamfering processing position, a feeding unit is provided on the pipe cover chamfering machine, and the feeding unit includes but is not limited to the following structure: in this embodiment, the mounting base plate 11 is fixedly installed with two slide rails at intervals above and below, and each slide rail is slidably fitted with a slider, and a slide plate 21 is fixedly installed between the two sliders, and a push plate 22 is fixedly installed on the front side of the right end of the slide plate 21, and the left side of the slide plate 21 is connected to the piston rod of the transverse cylinder 24 (in other examples, the transverse cylinder 24 can also be replaced by other types of driving mechanisms such as a motor chain transmission system), and the push plate 22 and the slide plate 21 are both located between the fixed front plate 14 and the fixed back plate 13 and are driven by the transverse cylinder 24 to move back and forth laterally along the slide rails. The upper and lower ends of the front side of the push plate 22 are respectively installed with first rolling bodies 31 through the first fixed shaft. The first rolling body 31 specifically adopts a deep groove ball bearing (in some other examples, the first rolling body 31 can also be a roller installed on the first fixed shaft with a bearing). The first rolling body 31 is located between the push plate 22 and the fixed back plate 13 and is located in the feeding channel. When the push plate 22 moves to the left through the feeding starting position, the first rolling body 31 is located on the left side of the feeding starting position to make room for the pipe cover 100 to slide from the waiting position of the loading channel to the feeding starting position of the feeding channel by its own weight. Then, the push plate 22 is driven to move to the right by the transverse cylinder 24, and the pipe cover 100 can be pushed to the chamfering processing position through the first rolling body 31.

[0034] In order to ensure that the pipe cover 100 does not get stuck during the feeding process from the feeding starting position to the chamfering processing position, the width of the feeding channel is greater than the axial width of the pipe cover 100, and the guide surface of the fixed back plate 13, that is, its front side surface, is a vertical surface parallel to the lateral movement direction of the slide plate 21, and the front side surface of the fixed back plate 13 does not protrude forward relative to the bottom surface of the end groove of the fixed groove rail 12. Specifically, in this embodiment, the front side surface of the fixed back plate 13 and the bottom surface of the end groove of the fixed groove rail 12 are on the same vertical surface; in addition, the upper right end of the slide plate 21 is formed with an arc line that matches the circumferential surface of the pipe cover 100. The supporting part, the upper left end of the fixed back plate 13 is higher than the supporting part of the slide plate 21, so that when the pipe cover 100 is in the waiting position, the pipe cover 100 is attached to the upper right end of the slide plate 21 and cooperates with the left and right limiters of the fixed groove rail 12 to keep the pipe cover 100 in the waiting position. At the same time, the upper left end of the fixed back plate 13 is inserted upward into the waiting position and is located behind the pipe cover 100. When the slide plate 21 moves to the left, the support of the slide plate 21 is lost under the pipe cover 100. Since the fixed back plate 13 is behind the pipe cover 100 and the fixed front plate 14 is in front of the pipe cover 100, the pipe cover 100 will only slide down by its own weight.

[0035] Furthermore, in order to prevent the tube cover 100 from falling directly into the feeding channel from the gap between the front side of the slide plate 21 and the first rolling body 31 during the leftward movement of the slide plate 21, the spacing between the first rolling body 31 and the slide plate 21 in this embodiment is smaller than the diameter of the tube cover 100 and / or the space distance between the push plate 22 and the fixed back plate 13 is larger than the width of the circumferential surface of the tube cover 100. Since the first rolling body 31 can rotate, the first rolling body 31 will roll and fit with the circumferential surface of the tube cover 100 during the leftward movement of the push plate 22, and will not cause motion interference or lateral movement obstacles; when the first rolling body 31 moves to the left side of the feeding starting position, the tube cover 100 falls into the feeding starting position by its own weight.

[0036] In order to prevent the pipe cover 100 from falling directly out of the feeding channel after falling from the fixed groove rail 12 to the feeding channel, a lower support plate 23 is fixedly installed at the bottom of the slide plate 21 of this embodiment. The lower support plate 23 is located at the bottom of the feeding channel and between the fixed front plate 14 and the fixed back plate 13. The lower support plate 23 extends horizontally to the right relative to the push plate 22, so that the pipe cover 100 is supported by the lower support plate 23 after falling into the feeding channel, and the fixed front plate 14 and the fixed back plate 13 prevent the pipe cover 100 from falling out of the feeding channel from the front and back. The lower support plate 23 will also move to the chamfering position as the push plate 22 is pushed to the right, so that the pipe cover 100 is always kept in the feeding channel during the pushing process.

[0037] When the tube cover 100 is pushed to the chamfering processing position, the tube cover 100 is clamped by the clamping unit and driven by the rotary drive unit to rotate the tube cover 100 for chamfering. In this embodiment, a mounting plate 15 is fixedly installed on one side of the mounting base plate 11 corresponding to the chamfering processing position, and the mounting plate 15 is respectively installed with a second rolling body 32 through a second fixed shaft at the position corresponding to the first rolling body 31, and the second rolling body 32 specifically adopts a deep groove ball bearing (in some other examples, the second rolling body 32 can also be a roller mounted on the second fixed shaft using a bearing). When the tube cover 100 reaches the chamfering processing position, the circumferential surface of the tube cover 100 rolls and fits with the first rolling body 31 and the second rolling body 32, and the first rolling body 31 and the second rolling body 32 cooperate to maintain the X-axis coordinate and Z-axis coordinate of the rotation center of the tube cover 100. The two first rolling bodies 31 and the two second rolling bodies 32 are respectively located in the four quadrants of the tube cover 100, preferably the two first rolling bodies 31 correspond to each other up and down, and the two second rolling bodies 32 correspond to each other up and down.

[0038] In addition, because the width of the feeding channel is greater than the axial width of the tube cover 100, the Y-axis coordinate of the rotation center of the tube cover 100 also needs to be controlled for consistency. A set of rotating support assemblies and movable clamping assemblies need to be set on the front and rear sides of the chamfering processing position to ensure the Y-axis coordinate.

[0039] The movable clamping assembly of this embodiment includes but is not limited to the following structures, specifically: the movable clamping assembly includes a clamping cylinder 41 and a clamping actuator 42, the clamping cylinder 41 is fixedly mounted on the frame, the clamping actuator 42 is rotatably mounted on the end of the piston rod of the clamping cylinder 41 through a bearing, the fixed front plate 14 is provided with a through hole at the position corresponding to the clamping actuator 42, the clamping actuator 42 is a hollow cylinder, the clamping actuator 42 corresponds to the center of the pipe cover 100 and rotates with the pipe cover 100 in the clamped state. When the pipe cover 100 reaches the chamfering position, the action of the clamping cylinder 41 drives the clamping actuator 42 to push the pipe cover 100 backward to the specified position, thereby ensuring the Y-axis coordinate of the pipe cover 100 during chamfering, and when the pipe cover 100 rotates for chamfering, it drives the clamping actuator 42 to rotate and maintain a fitting state.

[0040] In order to reduce the rotational resistance to the pipe cover 100, a rotating support assembly is also provided at the position corresponding to the chamfering position of the mounting seat plate 11. The support surface of the rotating support assembly in contact with the pipe cover 100 protrudes forward by 0-2mm relative to the front side surface of the fixed back plate 13 (including the case where it is flush with the front side surface of the fixed back plate 13). In this way, the axial B end of the pipe cover 100 is limitedly supported by the rotating support assembly or the rotating support assembly and the fixed back plate 13 are jointly limitedly supported, especially when converted to the case where it is limitedly supported by the rotating support assembly, the rotational resistance can be greatly reduced.

[0041] The rotating support assembly is provided with four groups, all of which are arranged obliquely and correspondingly distributed in the four quadrants of the chamfering processing position. Each rotating support assembly includes two mounting seats 51, a mounting shaft installed between the two mounting seats 51, and a plurality of third rolling bodies 53 sleeved on the mounting shaft. The third rolling body 53 specifically adopts a deep groove ball bearing (in some other examples, the third rolling body 53 can also be a roller installed on the mounting shaft using a bearing). The third rolling body 53 rolls and fits with the axial B end of the pipe cover 100, and the center of the circle (i.e., the rotation center) of the pipe cover 100 is projected on the axis extension line of the mounting shaft. In this way, even if the third rolling body 53 protrudes forward relative to the fixed back plate 13, it will not hinder the pipe cover 100 from being smoothly sent to the chamfering processing position, because the inclined third rolling body 53 will smoothly guide the pipe cover 100 to the chamfering processing position by rolling around the mounting shaft and its arc-shaped guide surface, and can ensure the consistency of the Y-axis coordinate of the pipe cover 100 each time.

[0042] The first rolling body 31, the second rolling body 32, the movable clamping assembly and the rotating support assembly together constitute the clamping unit of the pipe cover 100. The fixed back plate 13 of this embodiment extends to the chamfering position, and the front side of the fixed back plate 13 is used to smoothly guide the pipe cover 100 to the rotating support assembly at the chamfering position.

[0043] The rotary drive unit for driving the tube cover 100 to rotate includes but is not limited to the following structures: the rotary drive unit includes a rotary motor and a drive wheel 61, the drive wheel 61 is coaxially mounted on the output shaft of the rotary motor and frictionally braked with the circumferential surface of the tube cover 100, the drive wheel 61 is staggered with the rotation limiting assembly, so that when the rotary motor is started, the friction braking between the drive wheel 61 and the circumferential surface of the tube cover 100 is realized, and the circumferential surface of the tube cover 100 is circular, and the rotation center is limited by the first rolling body 31, the second rolling body 32, the third rolling body 53 and the clamping actuator 42, and the coordinates remain unchanged, thereby realizing the rotary processing of the tube cover 100.

[0044] Regarding the chamfering process on the axial B end of the tube cover 100, the tube cover chamfering machine also includes a chamfering unit, which can be rotatably mounted on a machine frame. During the chamfering process, the chamfering unit rotates to a working position to process a chamfer on the tube cover 100, and when the chamfering process is completed, it can be reversed and leave the working position to facilitate the next tube cover 100 to smoothly enter the chamfering processing position.

[0045] The chamfering unit of this embodiment includes a chamfering motor 73, a chamfering cutter head, a combined seat body 72 and a driving cylinder 71. The cylinder body of the driving cylinder 71 is hinged on the mounting seat plate 11 and the end of its piston rod is hinged on the combined seat body 72. The combined seat body 72 is rotatably mounted on the mounting vertical plate 15 and can be flipped forward and backward around the rotating connection point. The chamfering motor 73 is mounted on the combined seat body 72 and a chamfering cutter head is mounted on its output shaft. The chamfering cutter head acts on the pipe cover 100 at the chamfering processing position or leaves the chamfering processing position with the telescopic action of the driving cylinder 71. The combined seat body 72 can adjust the up and down front and back positions of the chamfering motor 73.

[0046] When the chamfering process is completed, the rotating motor stops, the chamfering motor 73 is turned off, the driving cylinder 71 moves in the opposite direction and retracts the chamfering motor 73, and the clamping cylinder 41 retracts to loosen the pipe cover 100. Then the transverse cylinder 24 retracts to drive the first rolling body 31 to loosen the pipe cover 100 and also pulls the lower support plate 23 away from the chamfering processing position. In this way, the pipe cover 100 falls out from under the chamfering processing position by its own weight to complete the unloading, and the pipe cover 100 at the waiting position slides into the feeding starting position by its own weight. Then the transverse cylinder 24 extends to drive the pipe cover 100 at the feeding starting position to the chamfering processing position, and the chamfering process is performed after the clamping positioning is completed.

[0047] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention shall be defined by the attached claims and their equivalents.

Claims

1. Tube cover chamfering machine, characterized in that: include: The frame is provided with a feeding channel and a feeding channel which are interconnected, the feeding channel is arranged horizontally, and the feeding channel has a feeding starting position located at the junction with the feeding channel and a chamfering position located on a lateral side of the feeding starting position; The feeding unit comprises a slide plate, a push plate and a lower support plate which are arranged on the frame and are driven by a driving mechanism to slide transversely along the feeding channel, wherein the push plate protrudes from one side of the slide plate toward the chamfering processing position, and the lower support plate protrudes from one side of the push plate toward the chamfering processing position; The clamping unit includes a first rolling body installed on the side of the push plate close to the chamfering processing position and rollingly fitting the circumferential surface of the tube cover in the clamping state, a second rolling body installed at the chamfering processing position and rollingly fitting the circumferential surface of the tube cover in the clamping state, and a movable clamping assembly and a rotating support assembly installed at the front and rear sides of the chamfering processing position; A rotary drive unit, comprising a drive wheel driven to rotate by a rotary motor and frictionally braked with a circumferential surface of the pipe cover; A chamfering unit, which can be rotatably mounted on the frame and is used to chamfer the pipe cover at the chamfering processing position; The feeding channel is composed of a fixed back plate and a fixed front plate installed on the frame, and the slide plate, the push plate and the lower support plate are all located between the fixed back plate and the fixed front plate; The movable clamping assembly includes a clamping cylinder and a clamping actuator, wherein the clamping actuator is rotatably mounted on the end of the piston rod of the clamping cylinder through a bearing, and the clamping actuator corresponds to the center of the tube cover and rotates with the tube cover in the clamped state; Each rotating support assembly includes two mounting seats, a mounting shaft mounted between the two mounting seats, and a plurality of third rolling bodies sleeved on the mounting shaft. The bearing surface of the third rolling body is in rolling contact with the tube cover, and the center of the tube cover is projected onto the axis extension line of the mounting shaft.

2. The pipe cover chamfering machine according to claim 1, characterized in that: The upper end of the slide plate near the chamfering processing position is formed with a support portion whose arc line is matched with the circumferential surface of the tube cover, and the upper end of the fixed back plate at the feeding starting position is higher than the support portion of the slide plate.

3. The pipe cover chamfering machine according to claim 2, characterized in that: The distance between the first rolling body and the slide plate is smaller than the diameter of the tube cover and / or the space distance between the push plate and the fixed back plate is larger than the width of the circumferential surface of the tube cover.

4. The pipe cover chamfering machine according to claim 1, characterized in that: A fixed groove rail is fixedly installed on the frame, and one side of the fixed front plate extends upward to the opening side of the fixed groove rail and forms a feeding channel with the fixed groove rail.

5. The pipe cover chamfering machine according to claim 4, characterized in that: The width of the feeding channel is greater than the axial width of the tube cover, the front side of the fixed back plate is a vertical surface parallel to the lateral movement direction of the slide plate, and the bottom surface of the end groove of the fixed groove rail is flush with or protrudes relative to the front side of the fixed back plate.

6. The pipe cover chamfering machine according to claim 1, characterized in that: The rotating support assembly is provided with four groups, and the support surface of the rotating support assembly in contact with the pipe cover protrudes forward by 0-2mm relative to the front side surface of the fixed back plate.

7. The pipe cover chamfering machine according to claim 1, characterized in that: The chamfering unit includes a chamfering motor, a chamfering cutter head, a combined seat body and a driving cylinder. The cylinder body of the driving cylinder is hinged on the frame and the end of its piston rod is hinged on the combined seat body. The combined seat body is rotatably mounted on the frame. The chamfering motor is mounted on the combined seat body and the chamfering cutter head is mounted on its output shaft.

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