A pipe bender

Abstract

The application discloses a pipe bending machine, which comprises a bending piece and a pipe positioning module, wherein the pipe positioning module is provided with a pipe positioning hole, the pipe positioning module is provided with a pipe limiting piece, the pipe limiting piece and the bending piece are located at the outlet end of the pipe positioning hole, a pipe to be bent is positioned in the pipe positioning hole, the bending end of the pipe to be bent protrudes from the outlet end of the pipe positioning hole, the pipe limiting piece and the bending piece are respectively located on the two sides of the bending end, the bending piece is installed on a transverse displacement plate, the pipe positioning module is installed on a longitudinal displacement plate, an inclined guide groove is formed in the longitudinal displacement plate, one end of the transverse displacement plate is matched with a transverse guide rail, and the other end of the transverse displacement plate is matched in the inclined guide groove. In the process of bending the pipe, the bending piece is arc-shapedly displaced relative to the pipe, and the bending end of the pipe is bent into a smooth arc shape under the cooperation of the pipe limiting piece, so that the product quality is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to production equipment, in particular to the equipment for bending pipe fittings. BACKGROUND

[0002] The bending machine, such as the patent document with the application publication number CN 116116960 A discloses a bending machine for processing basketball stands, which comprises a placing seat 51, a bending piece 61, and a pressing piece 65 installed on the bending piece. The pipe fitting 52 is inserted into the placing seat 51, and when the pipe fitting is bent, the placing seat 51 drives the pipe fitting 52 to displace towards the bending piece 61, the pipe fitting 52 contacts with the pressing piece 65, and the pressing piece 65 bends the pipe fitting. SUMMARY

[0003] The technical problem solved by the present application is how to improve the smoothness of the bent part of the pipe fitting.

[0004] To solve the above technical problem, the present application provides the following technical solution: a bending machine, comprising a bending piece and a pipe fitting positioning module, the pipe fitting positioning module is provided with a pipe fitting positioning hole, the pipe fitting positioning module is provided with a pipe fitting limiting piece, the pipe fitting limiting piece and the bending piece are located at the outlet end of the pipe fitting positioning hole, the pipe fitting to be bent is positioned in the pipe fitting positioning hole, the bending end of the pipe fitting to be bent protrudes from the outlet end of the pipe fitting positioning hole, the pipe fitting limiting piece and the bending piece are respectively located on both sides of the bending end, the bending piece is installed on a transverse displacement plate, the pipe fitting positioning module is installed on a longitudinal displacement plate, an inclined guide groove is formed on the longitudinal displacement plate, one end of the transverse displacement plate is matched with a transverse guide rail, and the other end of the transverse displacement plate is matched in the inclined guide groove.

[0005] According to the above technical solution, the pipe fitting to be bent is inserted into the pipe fitting positioning hole, the bending end of the pipe fitting to be bent protrudes from the outlet end of the pipe fitting positioning hole, and is located between the pipe fitting limiting piece and the bending piece. The pipe fitting limiting piece and the bending piece are arranged in a staggered manner. Then, the longitudinal displacement plate is longitudinally displaced, the pipe fitting bending end approaches the bending piece, and the bending piece bends the pipe fitting bending end. Since the inclined guide groove is formed on the longitudinal displacement plate, the longitudinal displacement of the longitudinal displacement plate drives the transverse displacement plate to displace transversely along the transverse guide rail. In this way, while the bending piece bends the pipe fitting bending end, the transverse displacement plate is displaced transversely, that is, the bending piece is displaced along the pipe fitting bending end, and the trajectory is an arc shape, which is similar to the arc shape of the bent pipe fitting bending end. The bent pipe fitting bending end is surrounded by the pipe fitting limiting piece.

[0006] The bending piece of the present application is arc-shapedly displaced relative to the pipe fitting during the bending process of the pipe fitting, and the pipe fitting bending end is bent into a smooth arc shape under the cooperation of the pipe fitting limiting piece, which is beneficial to improving the product quality.

[0007] The transverse displacement plate is obliquely arranged and profiled on the oblique guide groove. In this way, when the transverse displacement plate is displaced in the oblique guide groove, the transverse displacement plate is in contact with the side wall of the oblique guide groove, which is beneficial to improve the stability of the displacement of the transverse displacement plate.

[0008] The longitudinal displacement plate is fitted on the longitudinal guide rail, and the longitudinal guide rail and the transverse guide rail are arranged on the base plate.

[0009] The bending member comprises a bending wheel frame mounted on a bending seat, and a first groove wheel mounted on the bending wheel frame. The bending seat is fixed on the transverse displacement plate. A clamping groove is formed on the bending seat, and the bending wheel frame is fitted in the clamping groove and fixed on the bending seat by a fastening bolt. The first groove wheel is in contact with the bent end of the pipe, and the bent end of the pipe is bent. During the bending process, the groove wheel rolls on the bent end of the pipe, avoiding damage to the surface of the pipe.

[0010] The pipe limiting member comprises a limiting wheel frame mounted on the longitudinal displacement plate and a second groove wheel mounted on the limiting wheel frame. Before bending, the bent end of the pipe is pressed against the second groove wheel. During the bending process, the bent end of the pipe wraps around the second groove wheel, and the bent end of the pipe assumes a smooth arc shape.

[0011] A square groove is formed on the base plate, and a vertical plate is fitted in the square groove. The top of the vertical plate is connected to the longitudinal displacement plate, and the bottom of the vertical plate is connected to a hydraulic cylinder. The hydraulic cylinder is installed at the bottom of the base plate. The hydraulic cylinder is arranged at the bottom of the base plate, which is beneficial to reduce the floor area of the pipe bending machine. The hydraulic cylinder drives the longitudinal displacement plate to longitudinally displace through the vertical plate, so that the pipe bending machine completes the bending of the pipe.

[0012] The inlet end of the pipe positioning hole is provided with an internal thread hole, and a pipe fastener is screwed in the internal thread hole. The outer end of the pipe fastener is petal-shaped, and the outer end of the pipe fastener is provided with an external thread. A fastening nut is screwed on the outer end of the pipe fastener. In operation, the pipe fastener is first screwed into the internal thread hole, and the outer end of the pipe fastener protrudes out of the pipe positioning hole. Then, the pipe is inserted into the pipe fastener and the pipe positioning hole, and the bent end of the pipe protrudes out of the outlet end of the pipe positioning hole to a suitable position. Then, the fastening nut is sleeved on the pipe and screwed with the outer end of the pipe fastener. Because the outer end of the pipe fastener is petal-shaped, the fastening nut makes the petals close, and the outer end of the pipe fastener is clamped on the pipe to position the pipe in the pipe positioning hole. Different outer diameters of the pipe can use different inner diameters of the pipe fastener, so the pipe fastener and the pipe positioning hole of the present application can be detachably connected. BRIEF DESCRIPTION OF DRAWINGS

[0013] The present application will be further described below with reference to the accompanying drawings:

[0014] Figure 1 It is a top view of the pipe bending machine;

[0015] Figure 2Fig. 2 is a schematic view of a pipe bending machine bending a pipe;

[0016] Figure 3 Fig. 3 is a schematic view of a pipe bending machine bending a pipe; Figure 1 Fig. 4 is a schematic view of a pipe bending machine bending a pipe from the left side;

[0017] Figure 4 Fig. 5 is a schematic view of a pipe fastener;

[0018] Figure 5 Fig. 6 is a schematic view of a pipe fastener from the right side; Figure 4

[0019] Figure 6 Fig. 7 is a schematic view of a pipe fastener from the cross-sectional view; Figure 4

[0020] Figure 7 Fig. 8 is a schematic view of a pipe fastener from the left side. Figure 4 Fig. 9 is a schematic view of a pipe fastener from the right side.

[0021] Fig. 10 is a schematic view of a pipe fastener from the top side. Fig. 11 is a schematic view of a pipe fastener from the bottom side.

[0022] 10, bending piece; 11, bending seat; 12, bending wheel frame; 13, first groove wheel; 14, fastening bolt;

[0023] 20, pipe positioning module; 21, pipe positioning hole; 22, pipe limiting piece; 23, limiting wheel frame; 24, second groove wheel;

[0024] 31, transverse displacement plate; 32, longitudinal displacement plate; 33, inclined guide groove; 34, transverse guide rail; 35, longitudinal guide rail;

[0025] 40, base plate; 41, square groove;

[0026] 50, hydraulic cylinder; 51, vertical plate;

[0027] 60, pipe fastener; 61, outer end of pipe fastener; 62, fastening nut;

[0028] 90, pipe; 91, bending end. DETAILED DESCRIPTION

[0029] In combination with Figure 1 , Figure 3 ​The utility model provides a pipe bending machine, including bending piece 10 and pipe piece positioning module 20, pipe piece positioning module is equipped with pipe piece positioning hole 21, pipe piece positioning module is equipped with pipe piece limiting piece 22, pipe piece limiting piece and bending piece are located at the export end of pipe piece positioning hole, the pipe piece to be bent 90 is positioned in pipe piece positioning hole, the bending end of pipe piece to be bent protrudes the export end of pipe piece positioning hole, and pipe piece limiting piece and bending piece are located at both sides of bending end respectively, and bending piece 10 is installed on transverse displacement plate 31, and pipe piece positioning module is installed on longitudinal displacement plate 32, and longitudinal displacement plate is equipped with inclined guide slot 33, and one end of transverse displacement plate cooperates with transverse guide rail 34, and the other end of transverse displacement plate cooperates in the inclined guide slot.

[0030] In combination Figure 1 、 Figure 2 The pipe piece to be bent 90 is inserted into the pipe piece positioning hole 21, and the bending end 91 of the pipe piece to be bent protrudes from the export end of the pipe piece positioning hole and is located between the pipe piece limiting piece 22 and the bending piece 10. The pipe piece limiting piece and the bending piece are arranged in a staggered manner. Then, the longitudinal displacement plate 32 is longitudinally displaced, the bending end 91 of the pipe piece is moved towards the bending piece 10, and the bending piece bends the bending end 91 of the pipe piece. Since the longitudinal displacement plate 32 is provided with an inclined guide slot 33, the longitudinal displacement of the longitudinal displacement plate 32 drives the transverse displacement plate 31 to displace transversely along the transverse guide rail 34. In this way, the bending piece 10 bends the bending end 91 of the pipe piece while the transverse displacement plate 31 is displaced transversely, i.e., the bending piece 10 is displaced along the bending end 91 of the pipe piece, and the trajectory is arc-shaped, which is similar to the arc shape of the bent bending end 91 of the pipe piece. The bent bending end of the pipe piece is wrapped around the pipe piece limiting piece 22.

[0031] The transverse displacement plate 31 is arranged in an inclined manner and is similar to the inclined guide slot 33. When the transverse displacement plate 31 is displaced in the inclined guide slot 33, the transverse displacement plate is in contact with the side wall of the inclined guide slot, which helps to improve the stability of the displacement of the transverse displacement plate.

[0032] The longitudinal displacement plate 32 is fitted on the longitudinal guide rail 35, and the longitudinal guide rail and the transverse guide rail 34 are arranged on the base plate 40. The base plate is supported by a stand, which is not shown in the drawings.

[0033] The bending piece 10 includes a bending wheel frame 12 mounted on a bending seat 11, and a first groove wheel 13 mounted on the bending wheel frame. The bending seat 11 is fixed on the transverse displacement plate 31. The bending seat 11 is provided with a clamping groove, and the bending wheel frame 12 is fitted in the clamping groove and fixed on the bending seat by a fastening bolt 14. The first groove wheel 13 is in contact with the bending end 91 of the pipe piece to bend the bending end of the pipe piece. During the bending process, the first groove wheel 13 rolls on the bending end 91 of the pipe piece to avoid damaging the surface of the pipe piece.

[0034] The pipe limiting member 22 comprises a limiting wheel frame 23 installed on the longitudinal displacement plate 32 and a second slot wheel 24 installed on the limiting wheel frame. During the bending process, the pipe bending end 91 wraps around the second slot wheel 24, and the pipe bending end presents a smooth arc shape.

[0035] The bottom plate 40 is provided with a square slot 41, and a vertical plate 51 is fitted in the square slot. The top of the vertical plate is connected with the longitudinal displacement plate 32, and the bottom of the vertical plate is connected with a hydraulic cylinder 50 installed at the bottom of the bottom plate. The hydraulic cylinder 50 is arranged at the bottom of the bottom plate 40, which is beneficial to reduce the floor area of the pipe bending machine. The hydraulic cylinder 50 drives the longitudinal displacement plate 32 to longitudinally displace through the vertical plate 51, so that the pipe bending machine completes the bending of the pipe.

[0036] In combination with Figure 1 , Figures 4 to 7 , the inlet end of the pipe positioning hole 21 is provided with an internal thread hole, and a pipe fastener 60 is screwed in the internal thread hole. The outer end 61 of the pipe fastener is petal-shaped, and the outer end of the pipe fastener is provided with an external thread. A fastening nut 62 is screwed on the outer end of the pipe fastener.

[0037] In operation, the pipe fastener 60 is first screwed in the internal thread hole, and the outer end of the pipe fastener protrudes out of the pipe positioning hole 21. Then, the pipe 90 is inserted into the pipe fastener 60 and the pipe positioning hole 21, and the bending end 91 of the pipe protrudes out of the outlet end of the pipe positioning hole to a suitable position. Then, the fastening nut 62 is sleeved on the pipe 90 and screwed with the outer end of the pipe fastener 60. Since the outer end 61 of the pipe fastener is petal-shaped, the fastening nut 62 makes the petals close, and the outer end 61 of the pipe fastener is clamped on the pipe 90 to position the pipe in the pipe positioning hole 21. The pipe fastener 60 and the pipe positioning hole 21 of the present application are detachably connected, and different outer diameters of pipes can use different inner diameters of pipe fasteners 60.

[0038] The above is only the preferred embodiment of the present application. For those skilled in the art, the specific embodiment and application range can be changed according to the idea of the present application, and the content of the specification should not be understood as a limitation of the present application.

Claims

1. A pipe bending machine comprising a bending member (10) and a pipe positioning module (20), the pipe positioning module being provided with a pipe positioning hole (21), the pipe positioning module being provided with a pipe limiting member (22), the pipe limiting member and the bending member being located at an exit end of the pipe positioning hole, a pipe to be bent (90) being positioned in the pipe positioning hole, a bending end of the pipe to be bent protruding from the exit end of the pipe positioning hole, the pipe limiting member and the bending member being located on two sides of the bending end respectively, characterized in that: The bending piece (10) is installed on the transverse displacement plate (31), the pipe positioning module is installed on the longitudinal displacement plate (32), the longitudinal displacement plate is provided with an inclined guide groove (33), one end of the transverse displacement plate is matched with the transverse guide rail (34), and the other end of the transverse displacement plate is matched in the inclined guide groove. The to-be-bent pipe is inserted into the pipe positioning hole, the bending end of the to-be-bent pipe protrudes from the outlet end of the pipe positioning hole and is located between the pipe limiting piece and the bending piece, and the pipe limiting piece and the bending piece are arranged in a staggered mode. The longitudinal displacement plate is longitudinally displaced, the pipe bending end is close to the bending piece, and the bending piece bends the pipe bending end. The longitudinal displacement of the longitudinal displacement plate drives the transverse displacement plate to be transversely displaced along the transverse guide rail, the bending piece is displaced along the pipe bending end, the track is arc-shaped and is shaped according to the arc-shaped pipe bending end after bending, and the bent pipe bending end is surrounded on the pipe limiting piece.

2. A pipe bender as claimed in claim 1, characterised in that: The transverse displacement plate (31) is arranged in an inclined mode and is shaped according to the inclined guide groove (33).

3. A pipe bender as claimed in claim 1, wherein: The longitudinal displacement plate (32) is matched with the longitudinal guide rail (35), and the longitudinal guide rail and the transverse guide rail (34) are arranged on the bottom plate (40).

4. A pipe bender as defined in claim 1 wherein: The bending piece (10) comprises a bending wheel frame (12) installed on a bending seat (11) and a first groove wheel (13) installed on the bending wheel frame, and the bending seat is fixed on the transverse displacement plate (31).

5. A pipe bender as defined in claim 1 wherein: The pipe limiting piece (22) comprises a limiting wheel frame (23) installed on the longitudinal displacement plate (32) and a second groove wheel (24) installed on the limiting wheel frame.

6. A pipe bender as claimed in claim 3 wherein: The bottom plate (40) is provided with a square groove (41), the square groove is matched with a vertical plate (51), the top of the vertical plate is connected with the longitudinal displacement plate (32), the bottom of the vertical plate is connected with a hydraulic cylinder (50), and the hydraulic cylinder is installed on the bottom of the bottom plate.

7. A pipe bender as defined in claim 1 wherein: The inlet end of the pipe positioning hole (21) is provided with an internal thread hole, the internal thread hole is screwed with a pipe fastener (60), the outer end (61) of the pipe fastener is petal-shaped, the outer end of the pipe fastener is provided with an external thread, and the outer end of the pipe fastener is screwed with a fastening nut (62).

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