Corrugated tube planetary helical grooving device

Abstract

The application discloses a corrugated pipe planetary helical slotting device, which comprises a planetary gear mechanism, the planetary gear mechanism comprises a planet carrier driven to rotate by a power device, a planet wheel rotatably installed on the planet carrier and a fixedly arranged inner gear ring, the planet wheel is engaged with the inner gear ring, the planet wheel is provided with three or four, the planet wheel is arranged in a circumferential distribution, the planet wheel is installed on a disc shaft, the disc shaft is installed on the planet carrier, the center of the planet carrier is provided with a pipe passing cone for the corrugated pipe to pass through; a cutter head is arranged on each disc shaft, the cutter head is provided with helical convex edges, arc straight edges and transition convex edges, all the helical convex edges are on the same helix, the interval between the two adjacent helical convex edges is equal, only in one helix, a slotting cutter is arranged between the two adjacent helical convex edges, the number of the arc straight edges is equal to that of the slotting cutters and the positions of the arc straight edges and the slotting cutters correspond to each other. The application adopts the planetary gear mechanism, the planetary gear mechanism is provided with three shafts or four shafts, the structure is simple and the reliability is good.

Description

Technical Field

[0001] This invention relates to the field of corrugated pipe production equipment technology, and more specifically, to a corrugated pipe planetary spiral grooving device. Background Technology

[0002] Existing bellows grooving devices typically have six or eight shafts, which are driven by synchronous belts. Each shaft is equipped with a cutter head, which holds a grooving cutter. Each shaft is also connected to a cylinder-driven clamping device. When grooving the bellows, the cylinders actuate to bring each cutter head closer to the bellows synchronously, clamping it. Then, each shaft rotates to groove the bellows with the cutter head.

[0003] The aforementioned grooving device has a large number of shafts and requires many transmission belts, resulting in a complex structure and poor reliability. Summary of the Invention

[0004] To address the above shortcomings, the technical problem to be solved by the present invention is to provide a bellows planetary spiral grooving device with a simple structure and high reliability.

[0005] To solve the above-mentioned technical problems, the first technical solution of the present invention is:

[0006] A corrugated pipe planetary spiral grooving device includes:

[0007] The planetary gear mechanism has two sets. The planetary gear mechanism includes a planet carrier driven to rotate by a power device, planet gears rotatably mounted on the planet carrier, and a fixed internal gear ring. The planet gears mesh with the internal gear ring. There are three or four planet gears. The planet gears are evenly distributed circumferentially. Each planet gear is mounted on a disc shaft. The disc shaft is mounted on the planet carrier. The center of the planet carrier has a pipe cone for the bellows to pass through.

[0008] Each of the disc shafts has a cutter disc, which has spiral protrusions, arc-shaped straight edges, and transition protrusions connecting adjacent arc-shaped straight edges. All the spiral protrusions are on the same spiral, and the distance between two adjacent spiral protrusions is equal. Only in one spiral turn, a grooving cutter is provided between two adjacent spiral protrusions. The number of arc-shaped straight edges is equal to the number of grooving cutters, and their positions correspond. All the arc-shaped straight edges are arranged along the same spiral direction.

[0009] Preferably, the planetary gears are provided in three parts, and the axial distance between the two ends of each helical ridge is twice the trough spacing of the bellows.

[0010] Preferably, the planetary gears are provided in three parts, and the axial distance between the two ends of each helical ridge is equal to the trough spacing of the bellows.

[0011] Preferably, there are four planetary gears, and the axial distance between the two ends of each helical ridge is twice the trough spacing of the bellows.

[0012] Preferably, there are four planetary gears, and the axial distance between the two ends of the helical ridge is equal to the trough spacing of the bellows.

[0013] Preferably, the planetary carrier is a Y-shaped carrier, and the three disk shafts are installed between the opposite ends of the two Y-shaped carriers, with a through-tube cone at the center of each of the two Y-shaped carriers.

[0014] Preferably, the planetary carrier is a cross, and the four disk shafts are installed between the opposite ends of the two crosses, with a through-tube cone at the center of each of the two crosses.

[0015] To solve the above-mentioned technical problems, the second technical solution of the present invention is:

[0016] A corrugated pipe planetary spiral grooving device includes:

[0017] The planetary gear mechanism has two sets. The planetary gear mechanism includes a planetary carrier driven to rotate by a power device, planetary gears rotatably mounted on the planetary carrier, and a fixed internal gear ring. The planetary gears mesh with the internal gear ring. There are four planetary gears. The planetary gears are evenly distributed circumferentially. Each planetary gear is mounted on a disc shaft. The four disc shafts are mounted on the planetary carrier. The center of the planetary carrier has a pipe cone for the bellows to pass through.

[0018] The cutter head has two disc shafts located on a diagonal line, each with a cutter head. The cutter head has spiral protrusions, arc-shaped straight edges, and transition protrusions connecting adjacent arc-shaped straight edges. All the spiral protrusions are on the same spiral, and the distance between two adjacent spiral protrusions is equal. Only in one spiral turn, a grooving cutter is provided between two adjacent spiral protrusions. The number of arc-shaped straight edges is equal to the number of grooving cutters, and their positions correspond. All the arc-shaped straight edges are arranged along the same spiral direction.

[0019] The guide disk has a guide disk on each of the two disk shafts located on another diagonal. The guide disk has a spiral protrusion, an arc-shaped straight ridge and a transition protrusion connecting adjacent arc-shaped straight ridges. All the spiral protrusions are on the same spiral, the distance between two adjacent spiral protrusions is equal, and all the arc-shaped straight ridges are arranged along the same spiral direction.

[0020] The number of arc-shaped straight edges on the cutter head and the number of arc-shaped straight edges on the guide plate are equal, and the arc-shaped straight edges on the cutter head and the arc-shaped straight edges on the guide plate are arranged in a one-to-one correspondence. When one of the arc-shaped straight edges on the cutter head is inserted into the trough of the bellows, the corresponding arc-shaped straight edge on the guide plate is also inserted into the trough of the bellows.

[0021] Preferably, the through-pipe cone is provided with a tapered guide sleeve.

[0022] Preferably, the planetary carrier is fixed with a driven drive wheel, the driven drive wheel meshes with a driving drive wheel, and the driving drive wheel is driven by the power device.

[0023] After adopting the above technical solution, the beneficial effects of the present invention are:

[0024] This application adopts a planetary gear mechanism, which has three or four shafts, has a simple structure and good reliability; moreover, it can open two, three or four slots in each trough, or open two, three or four slots in each trough with an interval of one trough, which has good versatility. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the corrugated pipe planetary spiral grooving device of the present invention;

[0026] Figure 2 This is a three-dimensional structural schematic diagram from another perspective of an embodiment of the corrugated pipe planetary spiral grooving device of the present invention;

[0027] Figure 3 This is a cross-sectional structural schematic diagram of an embodiment of the corrugated tube planetary spiral grooving device of the present invention;

[0028] Figure 4 yes Figure 1 Schematic diagram of the middle cutter head;

[0029] Figure 5 yes Figure 1 Schematic diagram of the planetary support structure;

[0030] In the diagram: 1. Planetary carrier; 11. Through-tube cone; 2. Planetary gear; 3. Internal gear ring; 4. Disc shaft; 5. Bellows; 6. Cutter head; 61. Helical rib; 62. Arc-shaped straight rib; 63. Transition rib; 64. Cutter hole; 7. Driven drive wheel; 8. Driven drive wheel. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0032] Example 1

[0033] like Figures 1-5 As shown in the figure, a corrugated pipe planetary spiral grooving device includes:

[0034] The planetary gear mechanism has two sets. The planetary gear mechanism includes a planet carrier 1 driven to rotate by a power device, planetary gears 2 rotatably mounted on the planet carrier 1, and an internal gear ring 3 fixedly set. The planetary gears 2 mesh with the internal gear ring 3. There are three or four planetary gears 2. The planetary gears 2 are evenly distributed in the circumference. Each planetary gear 2 is mounted on a disc shaft 4. The disc shaft 4 is mounted on the planet carrier 1. The center of the planet carrier 1 is provided with a pipe cone 11 for the bellows 5 to pass through.

[0035] Each cutter head 6 has a cutter head 6 on each disc shaft 4. Each cutter head 6 has the same structure. The cutter head 6 has a spiral protrusion 61, an arc-shaped straight rib 62 and a transition protrusion 63 connecting adjacent arc-shaped straight ribs 62. All spiral protrusions 61 are on the same spiral. The spacing between two adjacent spiral protrusions 61 is equal. Only in one spiral turn, a grooving cutter is provided between two adjacent spiral protrusions 61 (the cutter head 6 has a cutter hole 64 for installing the grooving cutter). The number of arc-shaped straight ribs 62 is equal to the number of grooving cutters and their positions are corresponding. All arc-shaped straight ribs 62 are arranged in the same spiral direction and extend circumferentially.

[0036] When grooving the bellows 5, the bellows 5 passes through the tube cone, and the spiral protrusions 61 on the four cutter discs 6 extend into the troughs of the bellows 5. The power unit drives the planetary carrier 1 to rotate, and the planetary carrier 1 drives the planetary gear 2 to rotate on its own axis while simultaneously revolving around the internal gear ring 3. When the planetary gear 2 rotates, it drives the spiral protrusions 61 to rotate, and the spiral protrusions 61 drive the bellows 5 to feed axially. When rotating to the part between two spiral protrusions 61, at this time, since there is no spiral protrusion 61 driving, the bellows 5 cannot feed axially. The grooving cutter rotates and cuts the trough. One grooving cutter on each cutter disc 6 simultaneously cuts a groove on the same trough, completing one grooving operation. At the same time, the arc-shaped straight rib 62 corresponding to the position of the grooving cutter is stuck in a trough, axially positioning the bellows 5 and preventing the bellows 5 from moving axially, which would cause inaccurate grooving. Then the cutter head 6 continues to rotate. When it rotates to the position of the next spiral protrusion 61, the spiral protrusion 61 drives the bellows 5 to feed axially and perform the next grooving operation.

[0037] As planetary gear 2 revolves, the next slotting position is offset from the previous slotting position.

[0038] In the illustrated embodiment, the planetary gear mechanism has four planetary gears 2, and the axial distance between the two ends of each helical ridge 61 is twice the trough spacing of the bellows 5. Each rotation of a helical ridge 61 drives the bellows 5 to advance axially to two troughs, and four grooves are formed on each trough.

[0039] In the illustrated embodiment, the planetary carrier is a cross, and four disc shafts 4 are respectively installed at the four ends of the cross. The middle of the cross is provided with a pipe-passing cone 11 for the bellows 5 to pass through. Preferably, the pipe-passing cone 11 is a conical structure to facilitate the passage of the bellows 5.

[0040] The two crosses of the two planetary gear mechanisms are arranged opposite each other, and the disc shaft 4 is installed between the two crosses. The two planetary gear mechanisms are connected to form a whole, which has good motion stability. Moreover, both ends of the bellows 5 are supported, which provides good support and facilitates the axial feed of the bellows 5.

[0041] The transition ridge 63 is preferably spiral-shaped, and all transition ridges 63 are on the same spiral.

[0042] One of the crosses is fixed with a driven drive wheel 7, which meshes with a driving drive wheel 8. The driving drive wheel 8 is driven to rotate by a power device, and the driving drive wheel 8 drives the driven drive wheel 7 to rotate, which in turn drives the planetary carrier 1 to rotate.

[0043] Example 2

[0044] Example 2 is basically the same in structure and principle as Example 1, except that the axial distance between the two ends of the spiral ridge 61 is equal to the trough spacing of the bellows 5. Each time the spiral ridge 61 rotates, the bellows 5 is driven to advance axially into one trough, and each trough has four grooves.

[0045] Example 3

[0046] Example 3 is basically the same in structure and principle as Example 1, except that the planetary carrier 1 is provided with three planetary gears 2, and the axial distance between the two ends of each helical ridge 61 is twice the trough spacing of the bellows 5. Each rotation of a helical ridge 61 drives the bellows 5 to advance axially to two troughs, and three grooves are opened on each trough. The planetary carrier 1 is a Y-shaped carrier, and the three disc shafts 6 are respectively installed between the opposite ends of the two Y-shaped carriers.

[0047] Example 4

[0048] Example 3 is basically the same in structure and principle as Example 1, except that the planetary carrier 1 is provided with three planetary gears 2, and the axial distance between the two ends of the helical ridge 61 is equal to the trough spacing of the bellows 5. Each rotation of the helical ridge 61 drives the bellows 5 to advance axially into one trough, and each trough has three slots. The planetary carrier 1 is a Y-shaped carrier, and the three disc shafts 6 are respectively installed between the opposite ends of the two Y-shaped carriers.

[0049] Example 5

[0050] Example 5 is basically the same in structure and principle as Example 1, the only difference being:

[0051] A cutter head 6 is provided on each of the two disc shafts 4 located on a diagonal line;

[0052] Two guide discs are respectively provided on the two disc shafts 4 located on the other diagonal. The guide discs are provided with spiral protrusions 61, arc-shaped straight ribs 62 and transition protrusions 63 connecting adjacent arc-shaped straight ribs 62. All spiral protrusions 61 are on the same spiral, the distance between two adjacent spiral protrusions 61 is equal, and all arc-shaped straight ribs 62 are arranged along the same spiral direction.

[0053] The number of arc-shaped straight ribs 62 on the cutter head 6 and the number of arc-shaped straight ribs 62 on the guide plate are equal, and the arc-shaped straight ribs 62 on the cutter head 6 and the arc-shaped straight ribs 62 on the guide plate are set in a one-to-one correspondence. When an arc-shaped straight rib 62 on the cutter head 6 is inserted into the trough of the bellows, the corresponding arc-shaped straight rib 62 on the guide plate is also inserted into the trough of the bellows.

[0054] The axial distance between the two ends of the spiral ribs 61 on the cutter head 6 and the guide plate is twice the trough spacing of the bellows 5.

[0055] When slotting the bellows 5, the spiral protrusions 61 on the cutter head 6 and the guide plate extend into the troughs of the bellows 5, and simultaneously drive the bellows 5 to feed axially. Each time the spiral protrusion 61 is rotated, the bellows 5 is driven to feed axially into two troughs, and two slots are opened on each trough.

[0056] Example 6

[0057] Example 5 is basically the same in structure and principle as Example 1, the only difference being:

[0058] A cutter head 6 is provided on each of the two disc shafts 4 located on a diagonal line;

[0059] Two guide discs are respectively provided on the two disc shafts 4 located on the other diagonal. The guide discs are provided with spiral protrusions 61, arc-shaped straight ribs 62 and transition protrusions 63 connecting adjacent arc-shaped straight ribs 62. All spiral protrusions 61 are on the same spiral, and the distance between two adjacent spiral protrusions 61 is equal. The number of arc-shaped straight ribs 62 is equal to that of the grooving cutter and their positions are corresponding. All arc-shaped straight ribs 62 are arranged along the same spiral direction.

[0060] The number of arc-shaped straight ribs 62 on the cutter head 6 and the number of arc-shaped straight ribs 62 on the guide plate are equal, and the arc-shaped straight ribs 62 on the cutter head 6 and the arc-shaped straight ribs 62 on the guide plate are set in a one-to-one correspondence. When an arc-shaped straight rib 62 on the cutter head 6 is inserted into the trough of the bellows, the corresponding arc-shaped straight rib 62 on the guide plate is also inserted into the trough of the bellows.

[0061] The axial distance between the two ends of the spiral protrusions 61 on the cutter head 6 and the guide plate is equal to the trough spacing of the bellows 5.

[0062] When slotting the bellows 5, the spiral protrusions 61 on the cutter head 6 and the guide plate extend into the troughs of the bellows 5, and at the same time drive the bellows 5 to feed axially. Each time the spiral protrusion 61 is rotated, the bellows 5 is driven to feed axially into one trough, and two slots are opened on each trough.

[0063] The above are examples of the preferred embodiments of the present invention, and the parts not described in detail are common knowledge to those skilled in the art. The scope of protection of the present invention is determined by the content of the claims, and any equivalent modifications made based on the technical teachings of the present invention are also within the scope of protection of the present invention.

Claims

1. A corrugated pipe planetary spiral grooving device, characterized in that, include: The planetary gear mechanism has two sets. The planetary gear mechanism includes a planet carrier driven to rotate by a power device, planet gears rotatably mounted on the planet carrier, and a fixed internal gear ring. The planet gears mesh with the internal gear ring. There are three or four planet gears. The planet gears are evenly distributed circumferentially. Each planet gear is mounted on a disc shaft. The disc shaft is mounted on the planet carrier. The center of the planet carrier has a pipe cone for the bellows to pass through. Each of the disc shafts has a cutter disc, which has spiral protrusions, arc-shaped straight edges, and transition protrusions connecting adjacent arc-shaped straight edges. All the spiral protrusions are on the same spiral, and the distance between two adjacent spiral protrusions is equal. Only in one spiral turn, a grooving cutter is provided between two adjacent spiral protrusions. The number of arc-shaped straight edges is equal to the number of grooving cutters, and their positions correspond. All the arc-shaped straight edges are arranged along the same spiral direction.

2. The corrugated pipe planetary spiral grooving device as described in claim 1, characterized in that, The planetary gears are provided in three parts, and the axial distance between the two ends of each helical ridge is twice the trough spacing of the bellows.

3. The corrugated pipe planetary spiral grooving device as described in claim 1, characterized in that, The planetary gears are provided in three parts, and the axial distance between the two ends of each helical ridge is equal to the trough spacing of the bellows.

4. The corrugated pipe planetary spiral grooving device as described in claim 1, characterized in that, The planetary gears are provided in four parts, and the axial distance between the two ends of each helical ridge is twice the trough spacing of the bellows.

5. The corrugated pipe planetary spiral grooving device as described in claim 1, characterized in that, The planetary gears are provided in four parts, and the axial distance between the two ends of the spiral convex rib is equal to the trough spacing of the bellows.

6. The corrugated pipe planetary spiral grooving device as described in claim 2 or 3, characterized in that, The planetary carrier is a Y-shaped carrier, and the three disk shafts are installed between the opposite ends of the two Y-shaped carriers. The center of each of the two Y-shaped carriers is provided with a tube cone.

7. The corrugated pipe planetary spiral grooving device as described in claim 4 or 5, characterized in that, The planetary carrier is a cross, and the four disk shafts are installed between the opposite ends of the two crosses. A through-tube cone is provided at the center of each of the two crosses.

8. A corrugated pipe planetary spiral grooving device, characterized in that, include: The planetary gear mechanism has two sets. The planetary gear mechanism includes a planetary carrier driven to rotate by a power device, planetary gears rotatably mounted on the planetary carrier, and a fixed internal gear ring. The planetary gears mesh with the internal gear ring. There are four planetary gears. The planetary gears are evenly distributed circumferentially. Each planetary gear is mounted on a disc shaft. The four disc shafts are mounted on the planetary carrier. The center of the planetary carrier has a pipe cone for the bellows to pass through. The cutter head has two disc shafts located on a diagonal line, each with a cutter head. The cutter head has spiral protrusions, arc-shaped straight edges, and transition protrusions connecting adjacent arc-shaped straight edges. All the spiral protrusions are on the same spiral, and the distance between two adjacent spiral protrusions is equal. Only in one spiral turn, a grooving cutter is provided between two adjacent spiral protrusions. The number of arc-shaped straight edges is equal to the number of grooving cutters, and their positions correspond. All the arc-shaped straight edges are arranged along the same spiral direction. The guide disk has a guide disk on each of the two disk shafts located on another diagonal. The guide disk has a spiral protrusion, an arc-shaped straight ridge and a transition protrusion connecting adjacent arc-shaped straight ridges. All the spiral protrusions are on the same spiral, the distance between two adjacent spiral protrusions is equal, and all the arc-shaped straight ridges are arranged along the same spiral direction. The number of arc-shaped straight edges on the cutter head and the number of arc-shaped straight edges on the guide plate are equal, and the arc-shaped straight edges on the cutter head and the arc-shaped straight edges on the guide plate are arranged in a one-to-one correspondence. When one of the arc-shaped straight edges on the cutter head is inserted into the trough of the bellows, the corresponding arc-shaped straight edge on the guide plate is also inserted into the trough of the bellows.

9. The corrugated pipe planetary spiral grooving device as described in claim 1 or 8, characterized in that, The through-tube cone is provided with a tapered guide sleeve.

10. The corrugated pipe planetary spiral grooving device as described in claim 1 or 8, characterized in that, The planetary carrier is fixed with a driven drive wheel, which meshes with a driving drive wheel, and the driving drive wheel is driven by the power device.

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