Automatic cutting machine for corrugated pipe

Abstract

The utility model discloses an automatic cutting machine for corrugated pipes. The automatic cutting machine comprises a base; a vertical support is fixed to the base, a hydraulic cylinder is rotationally matched with the support through a suspension frame, a sliding seat is slidably matched with a telescopic rod of the hydraulic cylinder, the two sides of the sliding seat are respectively provided with a positioning bearing, a notch is formed in the middle of the sliding seat to form a cutter containing cavity, and the telescopic rod penetrates through the sliding seat and is fixedly provided with a cutter in the cutter containing cavity. A limiting ring of an annular structure is fixed to the portion, above the sliding base, of the telescopic rod, the limiting ring and the top face of the sliding base are connected with a compression spring, and the compression spring and the telescopic rod are concentrically matched. A deflection reset spring is fixed to the side face, close to the support, of the hydraulic cylinder through a spring seat, and the other end of the deflection reset spring is connected with the support or the suspension frame. A rotary supporting assembly capable of driving the corrugated pipe to rotate is arranged below the hydraulic cylinder. The corrugated pipe cutting device has the beneficial effect that the corrugated pipe is cut at the wave trough of the corrugated pipe every time.

Description

Technical Field

[0001] The utility model belongs to the field of corrugated pipe cutting technology, in particular to an automatic corrugated pipe cutting machine. Background Art

[0002] PVC corrugated pipe, also known as double-wall corrugated pipe, is a new type of pipe with corrugated outer wall. It has been widely used as buried drainage pipes, underground cable pipes, etc., and has replaced traditional cast iron pipes, cement pipes, and ordinary plastic pipes to a considerable extent.

[0003] In order to connect the bellows and the joint, because the peak diameter of the bellows is larger than the trough diameter of the bellows, the end faces of the bellows usually used in construction sites with high requirements for sealing are cut at the trough of the bellows. This not only facilitates the closing of the end of the bellows, but also avoids the problem of cutting at the peak and external impurities or water entering from the everted peak end face. However, the existing bellows cutting equipment (such as the patent document with publication number CN114454238A) does not have a related mechanism that can position the cutting point at the trough of the bellows, resulting in the need to manually cut the port when a bellows with an end face cut at the trough is required on site, which wastes construction time. Utility Model Content

[0004] The utility model aims to provide an automatic bellows cutting machine to solve the technical problem that there is no relevant mechanism in the above background technology that can locate the cutting point at the trough of the bellows, resulting in the need for manual cutting of the port.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] The cam is an axially-coupled hydraulic cylinder, and a hydraulic cylinder is provided on the hydraulic cylinder to rotate with the top of the hydraulic cylinder. A sliding seat is slidably coupled to the telescopic rod of the hydraulic cylinder. A set of fixed shafts are respectively provided on both sides of the sliding seat. The two sets of fixed shafts are concentrically arranged. A positioning bearing is concentrically arranged on each set of fixed shafts. A recess is provided in the middle of the sliding seat to form a knife receiving cavity. The telescopic rod penetrates the sliding seat and a cutting knife is fixed in the knife receiving cavity. A limiting ring of an annular structure is fixed on the telescopic rod above the sliding seat. A compression spring is connected to the limiting ring and the top surface of the sliding seat. The compression spring and the telescopic rod are concentrically matched. A deflection reset spring is fixed to the side of the hydraulic cylinder close to the bracket by a spring seat. The other end of the deflection reset spring is connected to the bracket or the suspension frame. A rotating support assembly that can drive the corrugated pipe to rotate is provided below the hydraulic cylinder.

[0007] Further: the rotating support assembly includes: a motor, a support platform, a rotating column, a driving wheel, and a driven wheel; the support platform is a horizontal plate structure supported by a bracket, and two groups of rotating columns with roller structures are fixed on the top of the support platform by bearings and bearing seats, and the axis of the rotating column is parallel to the placement direction of the bellows, and a motor is fixed at the bottom of the support platform, and a driving wheel is fixed on the output shaft of the motor, and a driven wheel is coaxially fixed on one or two groups of rotating columns, and a belt or chain is used to drive the driving wheel and all the driven wheels.

[0008] Further: in order to prevent the bracket from obstructing or limiting the movement of the corrugated pipe, the bracket is provided with a pipe penetration hole for the corrugated pipe to penetrate.

[0009] Furthermore: in order to increase the rolling friction when the bellows is rotated, the outer roller surface of the rotating column is covered with an anti-slip rubber layer.

[0010] Furthermore: in order to improve the smoothness of cutting the corrugated pipe, the axis of the fixed shaft is perpendicular to the axis of the corrugated pipe to be cut, and the center planes of the two blade surfaces of the cutter coincide with the axis of the fixed shaft.

[0011] Furthermore, in order to facilitate the cutter to pierce the wall of the corrugated pipe more quickly when cutting the corrugated pipe, the lower end of the cutter adopts a V-shaped pointed blade.

[0012] Furthermore: in order to enable the cutter to perform bidirectional cutting, both sides of the cutter are sharpened.

[0013] Furthermore: in order to enable the locating bearing to smoothly contact the trough of the bellows, the radius of the locating bearing is smaller than the corrugation radius of the bellows.

[0014] Furthermore: in order to avoid inconsistent rotation of the two rotating cylinders, the roller surfaces of the two groups of rotating cylinders of the rotating support assembly do not contact each other.

[0015] In summary, the utility model has the following beneficial effects:

[0016] It can ensure that the bellows is cut at the trough of the bellows every time: through the establishment of the slide seat, the locating bearing and the cutter, when the locating bearing contacts the non-trough bottom of the outer tube wall of the bellows, as the hydraulic cylinder continues to extend, the locating bearing will roll on the wave surface of the bellows until the locating bearing falls into the trough of the bellows and is located at the bottom of the trough of the bellows. When the locating bearing contacts the bottom of the trough of the bellows, the blades on both sides of the cutter cut the bellows. After the bellows rotates a full circle, the cutting operation of the bellows is completed, and it is ensured that the cutting position is the trough of the bellows. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the rotating support assembly in the utility model;

[0019] Figure 3 yes Figure 2 A magnified view of the structure in the middle;

[0020] Figure 4 This is a schematic diagram of the structure of the utility model when the middle cutter is retracted;

[0021] Figure 5 yes Figure 4 A magnified view of the structure at B in the middle;

[0022] Figure 6 It is a structural schematic diagram of the utility model when the middle cutter is extended.

[0023] In the figure, 1, base; 2, bracket; 3, suspension frame; 4, hydraulic cylinder; 5, slide seat; 6, positioning bearing; 7, cutter; 8, compression spring; 9, rotation support assembly; 10, deflection return spring; 11, deflection axis; 12, bellows; 21, pipe hole; 41, telescopic rod; 42, limit ring; 43, spring seat; 51, knife cavity; 52, fixed axis; 91, motor; 92, support platform; 93, rotating column; 94, driving wheel; 95, driven wheel; 121, bellows trough. DETAILED DESCRIPTION

[0024] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0025] Example:

[0026] See also Figure 1-Figure 6 , the utility model provides a technical solution:

[0027] A corrugated pipe automatic cutting machine, comprising: a base 1; a vertical bracket 2 is fixed on the base 1, a suspension bracket 3 is fixed on the bracket 2, the top of the suspension bracket 3 extends horizontally and a hydraulic cylinder 4 is rotatably matched with a deflection shaft 11 at the extended end, a slide seat 5 is slidably matched on the telescopic rod 41 of the hydraulic cylinder 4, a group of fixed shafts 52 are respectively provided on both sides of the slide seat 5, the two groups of fixed shafts 52 are concentrically arranged, and a positioning bearing 6 is concentrically arranged on each group of fixed shafts 52, and a notch is provided in the middle of the slide seat 5 to form a knife receiving cavity 51 The telescopic rod 41 penetrates the slide 5 and a cutting knife 7 is fixed in the knife receiving cavity 51. A limiting ring 42 with an annular structure is fixed on the telescopic rod 41 above the slide 5. A compression spring 8 is connected to the limiting ring 42 and the top surface of the slide 5. The compression spring 8 and the telescopic rod 41 are concentrically matched; a deflection return spring 10 is fixed to the side of the hydraulic cylinder 4 close to the bracket 2 using a spring seat 43, and the other end of the deflection return spring 10 is connected to the bracket 2 or the suspension frame 3; a rotating support assembly 9 that can drive the bellows to rotate is provided below the hydraulic cylinder 4.

[0028] The rotating support assembly 9 includes: a motor 91, a support platform 92, a rotating column 93, a driving wheel 94, and a driven wheel 95; the support platform 92 is a horizontal plate structure supported by a bracket, and two groups of rotating columns 93 with roller structures are fixed on the top of the support platform 92 by bearings and bearing seats, and the axis of the rotating column 93 is parallel to the placement direction of the corrugated tube. A motor 91 is fixed at the bottom of the support platform 92, and a driving wheel 94 is fixed on the output shaft of the motor 91. A driven wheel 95 is coaxially fixed on one or two groups of rotating columns 93, and a belt or chain is used to drive the driving wheel 94 and all the driven wheels 95.

[0029] In order to prevent the support 2 from hindering or limiting the movement of the corrugated tube, the support 2 is provided with a tube-penetrating hole 21 for the corrugated tube to penetrate.

[0030] In order to increase the rolling friction when the bellows is rotated, the outer roller surface of the rotating column 93 is covered with an anti-slip rubber layer.

[0031] In order to improve the smoothness of cutting the corrugated pipe, the axis of the fixed shaft 52 is perpendicular to the axis of the corrugated pipe to be cut, and the center planes of the two blade surfaces of the cutter 7 coincide with the axis of the fixed shaft 52 .

[0032] In order to facilitate the cutter 7 to penetrate the wall of the corrugated tube more quickly when cutting the corrugated tube, the lower end of the cutter 7 adopts a V-shaped pointed blade.

[0033] In order to enable the cutter 7 to perform bidirectional cutting, both sides of the cutter 7 are sharpened.

[0034] In order to enable the locating bearing 6 to smoothly contact the corrugated tube trough of the corrugated tube, the radius of the locating bearing 6 is smaller than the corrugation radius of the corrugated tube.

[0035] In order to avoid inconsistent rotation of the two rotating cylinders 93 , the roller surfaces of the two groups of rotating cylinders 93 of the rotating support assembly 9 do not contact each other.

[0036] Brief description of the usage process:

[0037] When in use, the bellows 12 is transported by the conveying mechanism (the conveying mechanism is an external component and is not within the scope of protection of this application), and the bellows 12 penetrates the tube hole 21 until the cutting position of the bellows 12 is located between the two groups of rotating columns 93 below the cutter 7, and the two groups of rotating columns 93 and the bellows 12 are fitted together. At this time, the telescopic rod 41 of the hydraulic cylinder 4 is driven to extend, and the telescopic rod 41 drives the slide 5, the positioning bearing 6, the cutter 7, and the clamping spring 8 to descend as a whole until the positioning bearing 6 on the slide 5 contacts the outer tube wall of the bellows 12. At this time, the contact state is divided into the following two situations:

[0038] Case 1: the positioning bearing 6 is in contact with the bottom of the bellows trough 121 of the bellows 12;

[0039] Case 2: When the locating bearing 6 contacts the non-trough bottom of the outer tube wall of the bellows 12, as the hydraulic cylinder 4 continues to extend, the locating bearing 6 will roll on the wave surface of the bellows 12 until the locating bearing 6 falls into the trough 121 of the bellows and is located at the bottom of the trough 121 of the bellows; at this time, due to the rolling of the locating bearing 6, the hydraulic cylinder 4 will move and deflect along with the locating bearing 6, and when the hydraulic cylinder 4 deflects, it deflects around the deflection axis 11, and at this time the deflection return spring 10 is compressed or stretched to store elastic potential energy.

[0040] The final result of the above two situations is that the positioning bearing 6 contacts the bottom of the bellows trough 121 of the bellows 12. At this time, the positioning bearing 6 has no room to move downward. At this time, the telescopic rod 41 of the hydraulic cylinder 4 continues to be driven to extend. Because the positioning bearing 6 has no room to move downward, the sliding seat 5 connected to the positioning bearing 6 by the fixed shaft 52 also has no room to move downward. Therefore, as the telescopic rod 41 extends, the cutter 7 at the extended end of the telescopic rod 41 will follow the decline and protrude from the knife receiving cavity 51, and continue to descend so that the cutter 7 penetrates into the bellows trough 121 where the positioning bearing 6 is located, and pierces the wall of the bellows 12.

[0041] At this time, the motor 91 is energized again to rotate. The motor 91 drives one or two groups of rotating columns 93 to rotate through the transmission of the driving wheel 94 and the driven wheel 95. The bellows 12 is driven to rotate by the rotating columns 93. At this time, because the cutter 7 is fixed on the telescopic rod 41 of the hydraulic cylinder 4, the rotating bellows 12 will be cut by the blades on both sides of the cutter 7. After the bellows 12 rotates a full circle, the cutting operation of the bellows 12 is completed, and it is ensured that the cutting position is the bellows trough of the bellows 12.

[0042] After the cutting is completed, the telescopic rod 41 of the hydraulic cylinder 4 is driven to reset. At this time, under the elastic force of the compression spring 8, the slide 5 slides on the telescopic rod 41, and the cutter 7 re-enters the cutter receiving cavity 51 of the slide 5. After the telescopic rod 41 is reset, the positioning bearing 6 is disengaged from the trough 121 of the bellows, and then under the elastic force of the deflection reset spring 10, the deflection direction of the hydraulic cylinder 4 is reset, and then the next section of the bellows can be prepared for cutting.

[0043] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. An automatic corrugated pipe cutting machine, comprising: A base (1); characterized in that: a vertical bracket (2) is fixed on the base (1), a suspension bracket (3) is fixed on the bracket (2), the top of the suspension bracket (3) extends horizontally and is rotatably matched with a hydraulic cylinder (4) at the extended end by using a deflection axis (11), a sliding seat (5) is slidably matched on the telescopic rod (41) of the hydraulic cylinder (4), a group of fixed shafts (52) are respectively provided on both sides of the sliding seat (5), the two groups of fixed shafts (52) are concentrically arranged, and a positioning bearing (6) is concentrically arranged on each group of fixed shafts (52), a notch is provided in the middle of the sliding seat (5) to form a knife receiving cavity (51), the telescopic rod (41 ) A cutting knife (7) is fixed in the knife receiving cavity (51) through the penetrating slide (5), a limiting ring (42) of an annular structure is fixed on the telescopic rod (41) above the slide (5), a clamping spring (8) is connected to the limiting ring (42) and the top surface of the slide (5), and the clamping spring (8) and the telescopic rod (41) are concentrically matched; a deflection return spring (10) is fixed to the side of the hydraulic cylinder (4) close to the bracket (2) by a spring seat (43), and the other end of the deflection return spring (10) is connected to the bracket (2) or the suspension frame (3); a rotating support assembly (9) that can drive the bellows to rotate is provided below the hydraulic cylinder (4).

2. The automatic corrugated pipe cutting machine according to claim 1, characterized in that: The rotating support assembly (9) comprises: a motor (91), a support platform (92), a rotating column (93), a driving wheel (94), and a driven wheel (95); the support platform (92) is a horizontal plate-shaped structure supported by a bracket, two groups of rotating columns (93) with roller structures are fixed on the top of the support platform (92) by bearings and bearing seats, and the axis of the rotating column (93) is parallel to the placement direction of the corrugated tube, a motor (91) is fixed on the bottom of the support platform (92), and a driving wheel (94) is fixed on the output shaft of the motor (91), and a driven wheel (95) is coaxially fixed on one or two groups of rotating columns (93), and a belt or chain is used to drive the driving wheel (94) and all the driven wheels (95).

3. The automatic corrugated pipe cutting machine according to claim 1, characterized in that: The support (2) is provided with a pipe penetration hole (21) for the corrugated pipe to penetrate.

4. The automatic corrugated pipe cutting machine according to claim 2, characterized in that: The outer roller surface of the rotating column (93) is covered with an anti-skid rubber layer.

5. The automatic corrugated pipe cutting machine according to claim 1, characterized in that: The axis center line of the fixed shaft (52) is perpendicular to the axis center line of the corrugated pipe to be cut, and the center planes of the two blade surfaces of the cutter (7) coincide with the axis center line of the fixed shaft (52).

6. The automatic corrugated pipe cutting machine according to claim 5, characterized in that: The lower end of the cutting knife (7) adopts a V-shaped pointed blade.

7. The automatic corrugated pipe cutting machine according to claim 6, characterized in that: Both sides of the cutter (7) are sharpened.

8. The automatic corrugated pipe cutting machine according to claim 1, characterized in that: The radius of the positioning bearing (6) is smaller than the corrugation radius of the corrugated pipe.

9. The automatic corrugated pipe cutting machine according to claim 4, characterized in that: The roller surfaces of the two groups of rotating columns (93) of the rotating support assembly (9) do not contact each other.

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