Rotating wheel assembly for pipe bender, and rotating wheel for pipe bender

Abstract

A rotating wheel assembly for a pipe bender, comprising a cross beam (1) and rotating wheels (2). The number of the rotating wheels (2) is two, and the rotating wheels (2) are arranged on the cross beam (1) and spaced apart from each other; the rotating wheels (2) rotate relative to the cross beam (1); a shaft hole (21) is formed on each rotating wheel (2); a plurality of pipe slots (22) with different orientations and different pipe diameters are formed on the rotating wheel (2); the distances between at least some of the pipe slots (22) and the axis of the shaft hole (21) are inversely proportional to the pipe diameters of the pipe slots (22).

Description

Pipe bending machine wheel assembly and pipe bending machine wheel Technical Field

[0001] The utility model belongs to the technical field of pipe bending machines, and particularly relates to a pipe bending machine rotor assembly and a pipe bending machine rotor. Background Art

[0002] In the field of air-conditioning cold chain technology, copper tubes often need to be bent. An existing type of pipe bending machine has a pair of wheels, on which a pipe groove adapted to the pipe to be bent is provided. The pipe to be bent is placed in the pipe groove, and the top wheel is made perpendicular to the pipe to be bent to squeeze the pipe to be bent, thereby bending the pipe to be bent. In order to reduce the number of beams and wheels, the wheel is circular or regular polygonal, and a plurality of pipe grooves in different directions are provided on the wheel. When bending pipes of different diameters, it is necessary to adjust the distance between the axes of the two wheels (ultimately adjusting the distance between the two wheel grooves), which makes the structure and operation more complicated. For this type of pipe bending machine, reference can be made to CN218744143U - a conveniently adjustable pipe bending machine, and CN217018110U - a wheel adjustment structure for a pipe bending machine.

[0003] Therefore, it is of great practical significance to provide a pipe bending machine that can adapt to different pipe diameters without adjusting the distance between the runners.

[0004] Summary of the Invention

[0005] This utility model addresses the drawback of existing pipe bending machines, which require adjusting the distance between the two runner axes when bending pipes of different diameters. By providing a pipe bending machine runner assembly that can adapt to pipes of different diameters without adjusting the runner spacing, the distance between the two runner grooves can be adjusted simply by rotating the runner, without having to move the runner along the length of the beam. This simplifies the structure and makes operation more convenient. The utility model also provides a pipe bending machine runner.

[0006] To achieve the above purpose, the present invention adopts the following technical solution: a pipe bending machine wheel assembly, the wheel assembly comprising:

[0007] a beam;

[0008] Two rotating wheels are arranged on the beam at intervals and rotate relative to the beam;

[0009] A plurality of tube grooves are formed on the runner, at least some of the tube grooves have different directions and diameters, and the distance between some or all of the tube grooves and the center line of the runner is inversely proportional to the diameter of the tube grooves.

[0010] The pipe bending machine rotor assembly of the present invention has an axial hole formed on the rotor, and a plurality of pipe grooves with different orientations and different pipe diameters are formed on the rotor. The distance between at least some of the pipe grooves and the axis of the axial hole is inversely proportional to the pipe diameter. When it is necessary to adapt to pipes of different diameters, it is only necessary to rotate the rotor without adjusting the distance between the rotor axes, and of course, there is no need to replace the crossbeam and the rotor. The distance between the pipe groove and the axis of the axial hole is inversely proportional to the pipe diameter. It can be all or part of the distance between the pipe groove and the axis of the axial hole. For example, when the rotor has three pipe grooves with different orientations, the distance between the pipe grooves in the three orientations and the axis of the axial hole can be different, or the distance between the pipe grooves in the three orientations and the axis of the axial hole can be the same, and the distance between the pipe groove in the third orientation and the axis of the axial hole can be greater than the other two. Some or all of these pipe grooves refer to some or all of the pipe grooves with different orientations and different pipe diameters.

[0011] As an improvement, two, three or four pipe grooves with different directions are formed on the rotating wheel.

[0012] As an improvement, the tube groove extends in a straight line; the rotating wheel has a plurality of slotted surfaces with different directions, and the tube groove is formed on the slotted surfaces.

[0013] As an improvement, a first-direction tube groove, a second-direction tube groove, a third-direction tube groove and a fourth-direction tube groove are formed on the rotating wheel.

[0014] As an improvement, the diameters of the first-direction tube groove, the second-direction tube groove, the third-direction tube groove, and the fourth-direction tube groove decrease and are distributed in sequence. The number of the first-direction tube groove and the second-direction tube groove is one, the number of the third-direction tube groove is two, and the number of the fourth-direction tube groove is three.

[0015] As an improvement, the wheel is formed with second-direction tube grooves, third-direction tube grooves and fourth-direction tube grooves, the number of second-direction tube grooves, third-direction tube grooves and fourth-direction tube grooves increases, and the tube diameters decrease. The number of fourth-direction tube grooves is three.

[0016] As an improvement, a directional positioning structure is formed between the rotating wheel and the crossbeam, and the positioning structure includes a positioning hole in the height direction and a positioning assembly, and the positioning assembly includes a liftable positioning member.

[0017] As an improvement, a plurality of positioning holes distributed circumferentially are provided on the rotating wheel, and a positioning component is provided on the crossbeam, and the positioning component is a ball screw.

[0018] As an improvement, the wheel assembly also includes a fixed shaft, which is fixed on the crossbeam, and the wheel is provided with an axial hole, the axial hole of the wheel is loosely matched with the fixed shaft, a convex portion is formed at the lower part of the fixed shaft, and a groove is formed on the lower surface of the wheel, the convex portion is located in the groove, the height of the convex portion is greater than the depth of the groove, and an axial gap is provided between the wheel and the crossbeam, the middle part of the fixed shaft has an intermediate small diameter section and upper and lower matching sections, the diameter of the intermediate small diameter section is smaller than the upper and lower matching sections, and the upper and lower matching sections are matched with the wheel; an anti-slip component is provided at the upper end of the fixed shaft.

[0019] The rotating wheel of the pipe bending machine has multiple pipe grooves formed on the rotating wheel, at least some of the pipe grooves have different directions and different pipe diameters, and the distance between some or all of the pipe grooves and the center line of the rotating wheel is inversely proportional to the pipe diameter.

[0020] The beneficial effect of the pipe bending machine wheel assembly of the present invention is that a plurality of pipe grooves with different directions and different pipe diameters are formed on the wheel, and the distance between the pipe groove and the axis of the shaft hole is inversely proportional to the pipe diameter. When it is necessary to adapt to pipes of different diameters, it is only necessary to rotate the wheel without adjusting the distance between the wheel axes. The structure is simpler and the operation is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is a schematic structural diagram of a pipe bender wheel assembly according to a first embodiment of the present invention.

[0022] FIG2 is an exploded view of the structure of FIG1 .

[0023] FIG3 is a cross-sectional view of FIG1 .

[0024] FIG4 is a schematic structural diagram of a pipe bender wheel according to a first embodiment of the present invention.

[0025] FIG5 is a schematic diagram of the working principle of the pipe bending machine wheel assembly of the first embodiment of the utility model.

[0026] FIG6 is a schematic structural diagram of a pipe bending machine wheel assembly according to a second embodiment of the present invention.

[0027] FIG7 is a schematic structural diagram of a pipe bender wheel according to a second embodiment of the present invention.

[0028] FIG8 is a schematic structural diagram of a pipe bending machine wheel assembly according to a third embodiment of the present invention.

[0029] FIG9 is a schematic structural diagram of a pipe bender wheel according to a third embodiment of the present invention.

[0030] In the figure, 1, beam;

[0031] 2. Rotor; 21. Shaft hole; 22. Tube slot; 221. First-direction tube slot; 222. Second-direction tube slot; 223. Third-direction tube slot; 224. Fourth-direction tube slot; 23. Positioning hole; 24. Groove; 25. Hollow slot; 26. Reinforcement rib;

[0032] 3. Fixed shaft; 31. Protrusion; 32. Middle small diameter section; 33. Upper and lower matching sections;

[0033] 4. Positioning components;

[0034] 5. Anti-drop parts;

[0035] L1, the distance between the axis of the tube groove and the shaft hole in the first direction; L2, the distance between the axis of the tube groove and the shaft hole in the second direction; L3, the distance between the axis of the tube groove and the shaft hole in the third direction; L4, the distance between the axis of the tube groove and the shaft hole in the fourth direction.

[0036] DETAILED DESCRIPTION

[0037] The technical solutions of the embodiments of the present invention are explained and described below, but the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0038] 1 to 5 , a pipe bender wheel assembly according to a first embodiment of the present invention is shown, wherein the wheel assembly comprises:

[0039] A beam 1;

[0040] Two running wheels 2 are spaced apart and arranged on the beam 1, rotate relative to the beam 1, and have shaft holes 21;

[0041] A plurality of tube grooves 22 with different directions and diameters are formed on the runner 2 , and the distance between at least some of the tube grooves 22 and the axis of the shaft hole 21 is inversely proportional to the diameter thereof.

[0042] In this embodiment, the two wheels 2 are symmetrically arranged. The two wheels 2 are different, which makes the wheel assembly more beautiful as a whole. In other embodiments, two identical wheels can also be used.

[0043] In this embodiment, the wheel 2 has four surfaces facing different directions, and a tube groove 22 is provided on the plane.

[0044] In this embodiment, the tube groove 22 extends horizontally and linearly.

[0045] In this embodiment, the runner 2 is formed with a first-direction tube groove 221, a second-direction tube groove 222, a third-direction tube groove 223, and a fourth-direction tube groove 224. The horizontal projection of the runner 2 is roughly a dodecagon, which saves material and is more aesthetically pleasing compared to an octagon or an arc-shaped surface connecting the slotted surfaces.

[0046] In this embodiment, the tube diameters of the first-direction tube groove 221, the second-direction tube groove 222, the third-direction tube groove 223, and the fourth-direction tube groove 224 decrease gradually. The number of the first-direction tube groove 221 and the second-direction tube groove 222 is one, the number of the third-direction tube groove 223 is two, and the number of the fourth-direction tube groove 224 is three.

[0047] In this embodiment, the distance L1 between the first-direction tube groove 221 and the axis of the shaft hole 21 is equal to the distance L2 between the second-direction tube groove 222 and the axis of the shaft hole 21. The distance L3 between the third-direction tube groove 223 and the axis of the shaft hole 21 is greater than the distance L1 between the first-direction tube groove 221 and the axis of the shaft hole 21, and the distance L4 between the fourth-direction tube groove 224 and the axis of the shaft hole 21 is greater than the distance L3 between the third-direction tube groove 223 and the axis of the shaft hole 21. In this embodiment, L1 = L2 < L3 < L4. In other embodiments, the distance L1 between the first-direction tube groove 221 and the axis of the shaft hole 21 may also be less than the distance L2 between the second-direction tube groove 222 and the axis of the shaft hole 21, that is, L1 < L2 < L3 < L4.

[0048] In this embodiment, the tube diameters of the two third-direction tube grooves 223 are different, and the tube diameters of the three fourth-direction tube grooves 224 are different.

[0049] In this embodiment, a positioning structure is formed between the rotating wheel 2 and the crossbeam 1 . The positioning structure includes a positioning hole 23 in the height direction and a positioning assembly 4 . The positioning assembly 4 includes a liftable positioning member.

[0050] In this embodiment, the rotating wheel 2 has multiple circumferentially distributed positioning holes 23. The crossbeam 1 is provided with a positioning assembly 4, which is a ball screw. Ball screws are commercially available and consist of a spring, a steel ball, and a housing. The number of positioning holes 23 matches the orientation of the tube slots 22 and is distributed circumferentially. There are four positioning holes 23.

[0051] In this embodiment, the wheel assembly also includes a fixed shaft 3, which is fixed on the beam 1, and the wheel 2 is loosely fitted with the fixed shaft 3. A convex portion 31 is formed at the lower part of the fixed shaft 3, and a groove 24 is formed on the lower surface of the wheel 2. The convex portion 31 is located in the groove 24, and the height of the convex portion 31 is greater than the depth of the groove 24. There is an axial gap between the wheel 2 and the beam 1, and the middle part of the fixed shaft 3 has an intermediate small diameter section 32 and upper and lower fitting sections 33. The diameter of the intermediate small diameter section 32 is smaller than the upper and lower fitting sections 33, and the upper and lower fitting sections 33 are fitted with the wheel 2; an anti-slip component 5 is provided at the upper end of the fixed shaft 3.

[0052] In this embodiment, the fixing shaft 3 and the crossbeam 1 can be fixed by threaded connection, welding, bonding, interference fit, etc.

[0053] In this embodiment, the fixing shaft 3 and the anti-slip member 5 can be fixed by threaded connection, welding, bonding, clamping, etc. Specifically, the anti-slip member 5 adopts a bearing clamping ring with a cover.

[0054] In this embodiment, the pipe diameter indication numbers can be marked on the upper surface of the rotating wheel 2.

[0055] Referring to Figure 5, the working principle of the pipe bending machine wheel assembly of this embodiment is: assuming that the initial state is as shown in the upper figure in Figure 5, the first-facing pipe groove 221 with the largest pipe diameter is facing the top wheel direction (the line connecting the first-facing pipe grooves 221 of the two wheels 2 is perpendicular to the movement direction of the top wheel), and the positioning component 4 fixes the direction of the wheel 2. At this time, the copper tube with the largest pipe diameter can be bent; when the copper tube with the smallest pipe diameter needs to be bent, the elastic force of the positioning component 4 is overcome to rotate the wheel 2. After the wheel 2 rotates 90°, the fourth-facing pipe groove 224 with the smallest pipe diameter is facing the top wheel direction (the line connecting the fourth-facing pipe grooves 224 of the two wheels 2 is perpendicular to the movement direction of the top wheel), and the positioning component 4 re-fixes the direction of the wheel 2. The pipe bending machine wheel assembly changes to the figure shown in the lower figure in Figure 5. Before bending the pipe, place the copper pipe of the corresponding diameter in the corresponding fourth direction pipe groove 224, and then move the corresponding top wheel perpendicular to the beam 1. When the copper pipe contacts the runner 2, the force from the top wheel is much greater than the elastic force of the positioning component 4 and the runner 2 is rotationally connected to the fixed shaft 3. The runner 2 will rotate around the fixed shaft 3. When the top wheel moves the required stroke, the copper pipe will be bent into the required angle.

[0056] The beneficial effects of the pipe bending machine wheel assembly of the utility model are as follows: a plurality of pipe grooves 22 with different directions and different pipe diameters are formed on the wheel 2, and the distance between at least some of the pipe grooves 22 and the axis of the shaft hole 21 is inversely proportional to the pipe diameter. When it is necessary to adapt to pipes of different diameters, it is only necessary to rotate the wheel 2 without adjusting the distance between the axes of the wheel 2, which makes the structure simpler and the operation more convenient. A positioning structure is formed between the wheel 2 and the crossbeam 1, so that the wheel 2 can be kept in the required position when placing the copper pipe, which facilitates the placement of the copper pipe and ensures the accuracy of the pipe bending.

[0057] Example 2

[0058] 6 and 7 , the pipe bender wheel assembly of the second embodiment of the present invention includes:

[0059] Beam 1;

[0060] There are two running wheels 2, which are spaced apart and arranged on the beam 1, rotating relative to the beam 1 and having an axis hole 21;

[0061] A plurality of tube grooves 22 in different directions are formed on the rotating wheel 2 , and the distance between the tube groove 22 and the axis of the shaft hole 21 is inversely proportional to the tube diameter.

[0062] In this embodiment, the runner 2 is formed with a second-direction tube groove 222, a third-direction tube groove 223, and a fourth-direction tube groove 224. The horizontal projection of the runner 2 is roughly 9-sided, which saves materials and is more beautiful than a hexagonal or arc-shaped grooved surface.

[0063] In this embodiment, the number of the second-direction tube groove 222, the third-direction tube groove 223, and the fourth-direction tube groove 224 increases, and the tube diameter decreases. The distances between the second-direction tube groove 222, the third-direction tube groove 223, and the fourth-direction tube groove 224 and the axis of the axial hole 21 increase, and the number of the fourth-direction tube groove 224 is three.

[0064] In this embodiment, a positioning structure is formed between the rotating wheel 2 and the crossbeam 1, and the positioning structure includes positioning holes 23 in the height direction and a positioning assembly 4, and the positioning assembly 4 includes a liftable positioning member. There are three positioning holes 23.

[0065] Example 3

[0066] 8 and 9 , the pipe bender wheel assembly of the third embodiment of the present invention is shown. The difference between the pipe bender of the third embodiment and the pipe bender of the second embodiment lies in the wheel 2 .

[0067] In this embodiment, the wheel 2 is a plastic wheel 2 and further includes a hollow groove 25 with a reinforcing rib 26 formed therein. The hollow grooves 25 and the reinforcing rib 26 are distributed at multiple locations on the wheel 2. Some of the hollow grooves 25 are located at positions corresponding to the third-direction tube groove 223 and the fourth-direction tube groove 224. When viewed from above, a hollow groove 25 is provided at each of the third-direction tube groove 223 and the fourth-direction tube groove 224. A straight-shaped reinforcing rib 26 is formed in the hollow groove 25 at the third-direction tube groove 223, and a cross-shaped reinforcing rib 26 is formed in the hollow groove 25 at the fourth-direction tube groove 224. When viewed from below, a hollow groove 25 is provided at each of the third-direction tube groove 223 and the fourth-direction tube groove 224. A straight-shaped reinforcing rib 26 is formed in the hollow groove 25 at the third-direction tube groove 223 and the fourth-direction tube groove 224. The second-direction pipe groove 222 is located closer to the shaft hole 21 and therefore does not need to be hollowed out. Observed from below, part of the hollowed-out groove 25 is opened in the center area of ​​the runner 2. The hollowed-out groove 25 there is annular, and the reinforcing ribs 26 there are distributed circumferentially and radiate radially.

[0068] In this embodiment, the runner 2 has six circumferentially evenly spaced positioning holes 23, so that the runner assembly 03 does not need to be oriented when it is installed on the body assembly 01. If the runner 2 has only three circumferentially evenly spaced positioning holes 23, it must be installed in a specific direction, either left or right; otherwise, the runner 2 cannot be circumferentially positioned.

[0069] In this embodiment, a label slot is formed on the upper surface of the rotating wheel 2, in which a nameplate label can be attached, and the nameplate label can prevent dust and debris from entering the hollow slot 25. The label is not shown in the figure.

[0070] In other embodiments, the rotating wheel may also be made of other materials such as aluminum.

[0071] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art will understand that the present invention includes, but is not limited to, the contents described in the above specific embodiments. Any modifications that do not deviate from the functional and structural principles of the present invention are intended to be included within the scope of the claims.

Claims

1. Bending machine runner assembly, characterized in that: The runner assembly includes: a cross beam (1); two runners (2), which are spaced on the cross beam (1) and rotate relative to the cross beam (1); Wherein, a plurality of pipe grooves (22) are formed on the runner (2), at least some of the pipe grooves (22) have different orientations and different pipe diameters, and the distance between some or all of these pipe grooves (22) and the center line of the runner (2) is inversely proportional to its pipe diameter.

2. The runner assembly of the elbow bending machine according to claim 1, wherein: Two, three or four pipe grooves (22) with different orientations are formed on the runner (2).

3. The runner assembly of the pipe bender according to claim 1, characterized in that: The pipe groove (22) extends linearly; the runner (2) has a plurality of grooved surfaces with different orientations, and the pipe groove (22) is formed on the grooved surface; the runner (2) is also provided with a hollow groove (25), and a reinforcing rib (26) is formed in the hollow groove (25).

4. The runner assembly of the pipe bender according to claim 1, characterized in that: A first-orientation pipe groove (221), a second-orientation pipe groove (222), a third-orientation pipe groove (223) and a fourth-orientation pipe groove (224) are formed on the runner (2), and the pipe diameters of the first-orientation pipe groove (221), the second-orientation pipe groove (222), the third-orientation pipe groove (223) and the fourth-orientation pipe groove (224) decrease and are distributed in sequence.

5. The runner assembly of the pipe bender according to claim 4, characterized in that: The number of the first-orientation pipe groove (221) and the second-orientation pipe groove (222) is one, the number of the third-orientation pipe groove (223) is two, and the number of the fourth-orientation pipe groove (224) is three.

6. The runner assembly of the pipe bender according to claim 1, characterized in that: A second-orientation pipe groove (222), a third-orientation pipe groove (223) and a fourth-orientation pipe groove (224) are formed on the runner (2), the number of the second-orientation pipe groove (222), the third-orientation pipe groove (223) and the fourth-orientation pipe groove (224) increases, the pipe diameter decreases, the distance between the second-orientation pipe groove (222), the third-orientation pipe groove (223) and the fourth-orientation pipe groove (224) and the center line of the runner (2) increases, and the number of the fourth-orientation pipe groove (224) is three.

7. The runner assembly of the pipe bender according to claim 1, characterized in that: An orientation positioning structure is formed between the runner (2) and the cross beam (1), and the positioning structure includes a positioning hole (23) in the height direction and a positioning component (4), and the positioning component (4) includes a liftable positioning member.

8. The runner assembly of the elbow bending machine according to claim 7, wherein: A plurality of circumferentially distributed positioning holes (23) are opened on the runner (2), a positioning component (4) is provided on the cross beam (1), and the positioning component (4) is a ball screw; when the number of the orientations of the pipe groove (22) is odd, the number of the positioning holes (23) is twice the number of the orientations of the pipe groove (22).

9. The runner assembly of the elbow bending machine according to claim 1, characterized in that: The runner assembly further includes a fixed shaft (3), the fixed shaft (3) is fixed on the cross beam (1), the runner (2) is provided with a shaft hole (21), the shaft hole (21) of the runner (2) is in clearance fit with the fixed shaft (3), a convex portion (31) is formed at the lower part of the fixed shaft (3), a groove (24) is formed on the lower surface of the runner (2), the convex portion (31) is located in the groove (24), the height of the convex portion (31) is greater than the depth of the groove (24), an axial gap exists between the runner (2) and the cross beam (1), the middle part of the fixed shaft (3) has an intermediate small diameter section (32) and upper and lower mating sections (33), the diameter of the intermediate small diameter section (32) is smaller than that of the upper and lower mating sections (33), and the upper and lower mating sections (33) are in fit with the runner (2); a detent member (5) is provided at the upper end of the fixed shaft (3).

10. Bending machine runner, characterized in that: A plurality of pipe grooves (22) are formed on the runner (2), at least part of the pipe grooves (22) have different orientations and different pipe diameters, and the distance between part or all of these pipe grooves (22) and the center line of the runner (2) is inversely proportional to their pipe diameters.

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