A plastic pipe cutting end grinding device

Abstract

This utility model provides a plastic pipe cutting end grinding device, including a pipe body rotating support and a pipe body placed on the rotating support, and a support frame. Shaft seats are symmetrically arranged at both ends of the front side of the support frame. A drive shaft is rotatably mounted between the two shaft seats. A first drive device connected to the drive shaft is provided on the outer side of one of the shaft seats. Two sets of symmetrical sliding grooves are provided on the outside of the drive shaft. A grinding disc is fitted onto each set of sliding grooves. A sliding block is provided on the inner ring of the grinding disc, which slides with the sliding groove. The two grinding discs can respectively fit against the edges at both ends of the pipe body. By providing a sliding groove and sliding block cooperation structure on the drive shaft, the grinding discs can rotate synchronously and move freely along the axial direction under the drive of the drive shaft, thereby achieving flexible adjustment of the distance between the two grinding discs to adapt to the processing needs of plastic pipes of different lengths.

Description

Technical Field

[0001] This utility model relates to the field of visibility meters, and in particular to a device for grinding the cut ends of plastic pipes. Background Technology

[0002] In the production process of plastic pipes, continuously extruded plastic pipes are typically cut to a set length to form single-section plastic pipes. However, during the cutting process, due to factors such as tool wear, mismatched cutting speeds, or material properties, the cut edges of the plastic pipes often exhibit unevenness and burrs, severely affecting subsequent assembly and use. Therefore, grinding the cut surfaces of the plastic pipes becomes a necessary step.

[0003] Currently, Chinese patent CN210588587U discloses a grinding device for the cut surface of plastic pipes. The device includes a base with a grinding groove on its upper surface. Multiple rollers are installed within the grinding groove, and these rollers are driven to rotate by a roller drive device. Grinding devices are located at both ends of the grinding groove. Each grinding device includes a grinding disc, which is coaxially connected to a rotating shaft. The rotating shaft is driven to rotate by the grinding disc drive device. The grinding disc and the rotating shaft are connected by an elastic mechanism, allowing the grinding disc to extend and retract along the axial direction of the rotating shaft. This device offers high grinding efficiency, enabling simultaneous grinding of both sides of the plastic pipe. Furthermore, the grinding operation is simple, allowing for a single, complete grinding operation.

[0004] However, in practical applications, it has been found that this device still has certain limitations. Specifically, the distance between the two grinding discs is relatively fixed and cannot be adjusted according to changes in the length of the plastic tube. This limits its applicability to plastic tubes of specific lengths. When the cutting length of the plastic tube changes, the device cannot effectively clamp and stably grind tubes of different lengths, thus restricting the applicability and versatility of the equipment. Therefore, a plastic tube cutting end grinding device is proposed to solve the above problems. Utility Model Content

[0005] The main purpose of this invention is to provide a plastic pipe cutting end grinding device to solve the problem that existing end grinding equipment cannot adapt to changes in the length of plastic pipes.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a plastic pipe cutting end grinding device, including a pipe body rotating support and a pipe body placed on the pipe body rotating support, and a support frame. Shaft seats are symmetrically arranged at both ends of the front side of the support frame. A transmission shaft is rotatably installed between the two shaft seats. A first driving device connected to the transmission shaft is arranged on the outer side of one of the shaft seats. Two sets of left-right symmetrical sliding grooves are arranged on the outside of the transmission shaft. Grinding discs are fitted on both sets of sliding grooves. Sliding blocks that slide with the sliding grooves are arranged on the inner ring of the grinding discs. The two grinding discs can respectively fit against the edges of both ends of the pipe body. A spacing adjustment mechanism is arranged on the back of the support frame for adjusting the spacing between the two grinding discs. A moving groove is arranged on the support frame to facilitate the connection between the spacing adjustment mechanism and the grinding discs. A rotating connection component is arranged at the connection between the spacing adjustment mechanism and the grinding discs.

[0007] In the preferred embodiment, the spacing adjustment mechanism includes two baffles, which are symmetrically arranged at the two edges of the rear side of the support frame. Two slide rods and a rotatable positive and negative threaded screw are arranged between the two baffles. The two opposite threaded sections of the positive and negative threaded screw are respectively threaded with movable seats, and the two movable seats are slidably engaged with the two slide rods. A second drive device that is drivenly connected to the positive and negative threaded screw is arranged on the outer side of one of the baffles.

[0008] In a preferred embodiment, the rotary connection assembly includes a connecting part disposed on the movable seat and passing through the movable groove. The end of the connecting part is provided with a groove that can be fitted onto the outside of the grinding disc. Ball bearings that contact the side of the grinding disc are provided on the two inner sidewalls opposite to each other of the groove.

[0009] In the preferred embodiment, both sides of the grinding disc are provided with rotating connecting rings for sliding engagement with the balls.

[0010] In the preferred embodiment, the ball located on the side of the grinding disc away from the tube body is an elastic contact ball, which includes a support seat set on the outer side wall and a telescopic seat set on the side wall. The ball is rotatably set at the front end of the telescopic seat. The support seat is provided with two opposing limiting grooves. The tail end of the telescopic seat is provided with a limiting block that slides with the limiting grooves. The support seat is provided with a telescopic spring that abuts against the telescopic seat.

[0011] In the preferred embodiment, the tube rotating support includes a base body, the top of the base body is provided with an arc-shaped groove, multiple rollers are provided on the arc-shaped groove, and the side of the base body is provided with a clamping and rotating drive structure that can clamp the tube body from above.

[0012] In a preferred embodiment, the clamping rotation drive structure includes a hinged seat disposed on the side of the seat, a rotating frame hinged on the hinged seat, a rotation drive assembly that can contact the tube body at the end of the rotating frame, and a clamping telescopic cylinder disposed between the bottom of the side of the seat and the hinged end of the rotating frame, with both ends of the clamping telescopic cylinder being hinged to the seat and the rotating frame respectively.

[0013] In a preferred embodiment, the rotary drive assembly includes a rotary shaft rotatably disposed at the end of the rotary frame, a rotary drive wheel disposed outside the rotary shaft, and a third drive device that is drively connected to the rotary shaft disposed outside the rotary frame.

[0014] This invention provides a grinding device for the cut ends of plastic pipes. By incorporating a sliding groove and a sliding block on the drive shaft, the grinding discs can rotate synchronously and move freely along the axial direction under the drive of the drive shaft. This allows for flexible adjustment of the distance between the two grinding discs, adapting to the processing needs of plastic pipes of different lengths. Simultaneously, the grinding discs rotate under the drive of the drive shaft, coordinating with the rotation of the pipe body on the rotating support, achieving comprehensive and uniform grinding of the cut surfaces at both ends of the plastic pipe. Furthermore, the device includes a distance adjustment mechanism connected to the grinding discs via a rotating connecting assembly. This ensures stable rotation of the grinding discs while achieving precise position adjustment, enhancing the ease of operation and applicability of the equipment, and meeting the grinding process requirements in the production of plastic pipes of different specifications. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0016] Figure 1 This is an overall structural diagram of the present invention;

[0017] Figure 2 This is a structural diagram of the main grinding mechanism of this utility model;

[0018] Figure 3 This is an exploded view of the connection structure between the drive shaft and the grinding disc of this utility model;

[0019] Figure 4 This is a structural diagram of the spacing adjustment mechanism of this utility model;

[0020] Figure 5 This is a structural diagram of the connection between the movable base and the rotating connecting assembly of this utility model;

[0021] Figure 6 This is a utility model Figure 5 Enlarged view of the A-structure;

[0022] Figure 7 This is a structural diagram of the rotating support for the tube body of this utility model;

[0023] In the figure: support frame 1; moving groove 101; shaft seat 2; transmission shaft 3; sliding groove 4; grinding disc 5; sliding block 501; rotating connecting ring 502; spacing adjustment mechanism 6; baffle 601; positive and negative threaded screw 602; slide rod 603; moving seat 604; second drive device 605; rotating connecting assembly 7; connecting part 701; groove 702; ball 703; support seat 704; limiting groove 705; telescopic seat 706; limiting block 707; telescopic spring 708; tube body rotating support 8; seat body 801; arc groove 802; roller 803; hinge seat 804; rotating frame 805; rotating shaft 806; third drive device 807; rotating drive wheel 808; clamping telescopic cylinder 809; tube body 9; first drive device 10. Detailed Implementation

[0024] like Figure 1-7 As shown, a plastic pipe cutting end grinding device includes a pipe body rotating support 8 and a pipe body 9 placed on the pipe body rotating support 8. It also includes a support frame 1. Shaft seats 2 are symmetrically arranged at both ends of the front side of the support frame 1. A transmission shaft 3 is rotatably installed between the two shaft seats 2. Each of the two shaft seats 2 is provided with a bearing for rotatably installing the transmission shaft 3. A first drive device 10 connected to the transmission shaft 3 is provided on the outer side of one of the shaft seats 2, so that the transmission shaft 3 can be driven to rotate by the first drive device 10.

[0025] The drive shaft 3 has two sets of symmetrical sliding grooves 4 on its outside. Each set of sliding grooves 4 is fitted with a grinding disc 5. The inner ring of the grinding disc 5 is provided with a sliding block 501 that slides with the sliding groove 4. The two grinding discs 5 can respectively fit with the edges of both ends of the tube body 9. In this embodiment, there are four sliding grooves 4 in each set. The four sliding grooves 4 are arranged in a ring at equal intervals on the outside of the drive shaft 3. The inner ring of the grinding disc 5 is provided with four corresponding sliding blocks 501.

[0026] This design allows the grinding disc 5 to rotate synchronously under the drive of the transmission shaft 3, while also moving laterally on it, thereby adjusting the distance between the two grinding discs 5 to accommodate tubes 9 of different lengths. Furthermore, through its own rotation and the rotation of the tube 9 on the tube rotation support 8, the end can be ground in all directions.

[0027] The support frame 1 is provided with a spacing adjustment mechanism 6 on the back, which is used to adjust the spacing between the two grinding discs 5. The support frame 1 is provided with a moving groove 101 to facilitate the connection between the spacing adjustment mechanism 6 and the grinding disc 5. A rotating connection component 7 is provided at the connection between the spacing adjustment mechanism 6 and the grinding disc 5, so that the spacing between the two can be adjusted by using the spacing adjustment mechanism 6 without affecting the normal rotation and grinding of the grinding disc 5.

[0028] In the preferred embodiment, the spacing adjustment mechanism 6 includes two baffles 601, which are symmetrically arranged at the two edges of the rear side of the support frame 1. Two slide rods 603 and a rotatable positive and negative threaded screw 602 are arranged between the two baffles 601. The baffles 601 are provided with bearings for rotating the positive and negative threaded screw 602. The two opposite threaded sections of the positive and negative threaded screw 602 are respectively threaded with movable seats 604, and the two movable seats 604 are slidably engaged with the two slide rods 603. A second drive device 605 that is drivenly connected to the positive and negative threaded screw 602 is provided on the outer side of one of the baffles 601.

[0029] With this design, the second drive device 605 can be used to drive the positive and negative threaded screws 602 to rotate, while the two moving seats 604 can be moved in opposite or opposite directions under the restriction of the slide bar 603.

[0030] In a preferred embodiment, the rotary connection assembly 7 includes a connecting part 701 disposed on the movable seat 604 and passing through the movable groove 101. The end of the connecting part 701 is provided with a groove 702 that can be fitted onto the outside of the grinding disc 5. The two inner sidewalls opposite to each other of the groove 702 are provided with balls 703 that contact the side of the grinding disc 5. Thus, the free rotation of the balls 703 can be used to realize the rotary connection between the rotary connection assembly 7 and the grinding disc 5. While the lateral movement of the grinding disc 5 can be adjusted, its rotary grinding is not affected.

[0031] In the preferred embodiment, both sides of the grinding disc 5 are provided with a rotating connecting ring 502 for sliding cooperation with the ball bearing 703. The rotating connecting ring 502 can prevent the ball bearing 703 from causing unnecessary damage to the surface of the grinding disc 5.

[0032] Additionally, it should be noted that the rotating connecting ring 502 is positioned close to the inner ring of the grinding disc 5 to avoid affecting the contact between the grinding disc 5 and the tube body 9.

[0033] In the preferred embodiment, the ball bearing 703 located on the side of the grinding disc 5 away from the tube body 9 is an elastic contact ball bearing, which includes a support seat 704 disposed on the outer side of the side wall and a telescopic seat 706 disposed on the side wall. The side wall is provided with a hole for the telescopic seat 706 to pass through. The ball bearing 703 is rotatably disposed at the front end of the telescopic seat 706, so as not to affect its contact with the grinding disc 5. The support seat 704 is provided with two opposing limiting grooves 705. The tail end of the telescopic seat 706 is provided with a limiting block 707 that slides with the limiting grooves 705. The support seat 704 is provided with a telescopic spring 708 that abuts against the telescopic seat 706. Thus, the telescopicity of the telescopic spring 708 can be used to disengage the ball bearing 703 on the other side when the grinding disc 5 abuts against the end of the tube body 9, while ensuring the fit during the grinding process.

[0034] In the preferred embodiment, the tube rotating support 8 includes a base 801, the top of the base 801 is provided with an arc-shaped groove 802 to facilitate the placement of the tube 9, and multiple rollers 803 are provided on the arc-shaped groove 802 to facilitate the circumferential rotation of the tube 9. The side of the base 801 is provided with a clamping and rotating drive structure that can clamp the tube 9 from above.

[0035] The clamping rotation drive structure includes a hinge seat 804 disposed on the side of the base 801, a rotating frame 805 hinged to the hinge seat 804, and a rotation drive assembly that can contact the tube 9 at the end of the rotating frame 805. A clamping telescopic cylinder 809 is disposed between the bottom of the side of the base 801 and the hinge end of the rotating frame 805. The two ends of the clamping telescopic cylinder 809 are respectively hinged to the base 801 and the rotating frame 805. By extending and retracting the clamping telescopic cylinder 809, the rotating frame 805 can be controlled to open and close above the tube 9, thereby adjusting the connection relationship between the rotation drive assembly and the tube 9. When the two are connected, they can clamp and drive the tube 9 to rotate.

[0036] In a preferred embodiment, the rotary drive assembly includes a rotary shaft 806 rotatably disposed at the end of the rotary frame 805. The rotary shaft 806 is rotatably disposed in the rotary frame 805 via bearings. Rotary drive wheels 808 are disposed outside the rotary shaft 806. In this embodiment, there are two rotary drive wheels 808, which are rubber wheels. A third drive device 807 that is drively connected to the rotary shaft 806 is disposed on the outer side of the rotary frame 805.

[0037] With this design, the rotating shaft 806 can be driven by the third driving device 807 to rotate the two driving wheels 808, thereby rotating them while the driving wheels 808 are in contact with the tube body 9.

[0038] It should be noted that in this embodiment, the first driving device 10, the second driving device 605 and the third driving device 807 are all composed of a combination of motor and reducer transmission. In addition, when the tube 9 is placed or removed, the clamping rotation drive structure is in the open state, and the two grinding discs 5 are also in the maximum spacing state.

[0039] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A device for grinding the cut ends of a plastic pipe, comprising a pipe body rotating support (8) and a pipe body (9) placed on the pipe body rotating support (8), characterized in that: It also includes a support frame (1), with symmetrical bearing seats (2) at both ends of the front side of the support frame (1), and a drive shaft (3) rotatably mounted between the two bearing seats (2). A first drive device (10) connected to the drive shaft (3) is provided on the outside of one of the bearing seats (2). Two sets of left-right symmetrical sliding grooves (4) are provided on the outside of the drive shaft (3). A grinding disc (5) is fitted on each of the two sets of sliding grooves (4). A sliding block (501) that slides with the sliding groove (4) is provided on the inner ring of the grinding disc (5). The two grinding discs (5) can be fitted to the edges at both ends of the tube body (9). A spacing adjustment mechanism (6) is provided on the back of the support frame (1) to adjust the spacing between the two grinding discs (5). A moving groove (101) is provided on the support frame (1) to facilitate the connection between the spacing adjustment mechanism (6) and the grinding disc (5). A rotating connection component (7) is provided at the connection between the spacing adjustment mechanism (6) and the grinding disc (5).

2. The plastic pipe cutting end grinding device according to claim 1, characterized in that: the spacing... The adjustment mechanism (6) includes two baffles (601), which are symmetrically arranged at the two edges of the rear side of the support frame (1). Two slide rods (603) and a rotatable positive and negative threaded screw (602) are arranged between the two baffles (601). The two opposite thread segments of the positive and negative threaded screw (602) are respectively threaded with movable seats (604), and the two movable seats (604) are slidably engaged with the two slide rods (603). A second drive device (605) that is drivenly connected to the positive and negative threaded screw (602) is provided on the outer side of one of the baffles (601).

3. The plastic pipe cutting end grinding device according to claim 2, characterized in that: The rotating connection assembly (7) includes a connection part (701) disposed on the movable seat (604) and passing through the movable groove (101). The end of the connection part (701) is provided with a groove (702) that can be fitted onto the outside of the grinding disc (5). On the two inner sidewalls opposite to the groove (702), there are balls (703) that contact the side of the grinding disc (5).

4. The plastic pipe cutting end grinding device according to claim 3, characterized in that: Both sides of the grinding disc (5) are provided with rotating connecting rings (502) for sliding cooperation with the ball (703).

5. A plastic pipe cutting end grinding device according to claim 3 or 4, characterized in that: The ball (703) located on the side of the grinding disc (5) away from the tube body (9) is an elastic abutment ball, which includes a support seat (704) set on the outer side of the side wall and a telescopic seat (706) set on the side wall. The ball (703) is rotatably set at the front end of the telescopic seat (706). The support seat (704) is provided with two opposing limiting grooves (705). The tail end of the telescopic seat (706) is provided with a limiting block (707) that slides with the limiting groove (705). The support seat (704) is provided with a telescopic spring (708) that abuts against the telescopic seat (706).

6. The plastic pipe cutting end grinding device according to claim 1, characterized in that: The tube rotating support (8) includes a base (801), the top of the base (801) is provided with an arc groove (802), multiple rollers (803) are provided on the arc groove (802), and the side of the base (801) is provided with a clamping and rotating drive structure that can clamp the tube (9) from above.

7. The plastic pipe cutting end grinding device according to claim 6, characterized in that: The clamping rotation drive structure includes a hinge seat (804) provided on the side of the seat (801), a rotating frame (805) hinged on the hinge seat (804), and a rotation drive assembly that can contact the tube body (9) at the end of the rotating frame (805). A clamping telescopic cylinder (809) is provided between the bottom of the side of the seat (801) and the hinge end of the rotating frame (805). The two ends of the clamping telescopic cylinder (809) are respectively hinged to the seat (801) and the rotating frame (805).

8. The plastic pipe cutting end grinding device according to claim 7, characterized in that: The rotary drive assembly includes a rotary shaft (806) rotatably disposed at the end of the rotary frame (805), a rotary drive wheel (808) disposed outside the rotary shaft (806), and a third drive device (807) that is drively connected to the rotary shaft (806) disposed outside the rotary frame (805).

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