Separating type pipe bender

Abstract

The utility model provides a separated pipe bender, and belongs to the technical field of machinery. The pipe bender solves the problem that an existing pipe bender cannot achieve rapid separation of a supporting base and a bending die. The separated pipe bender comprises a pipe bending disc with an arc groove and a supporting seat arranged on the left side of the pipe bending disc, a roller matched with the arc groove is rotationally arranged on the supporting seat, handles are connected to the lower side of the supporting seat and the lower side of the pipe bending disc, the supporting seat comprises two connecting pieces arranged side by side, and the two connecting pieces are arranged on the two axial sides of the pipe bending disc respectively; circular shafts are arranged on the two axial sides of the pipe bending disc, and the central axes of the circular shafts and the circular arc grooves are collinear; u-shaped grooves matched with the circular shafts are formed in the upper sides of the right ends of the two connecting pieces correspondingly, and the two circular shafts are inserted into the two U-shaped grooves correspondingly so that the supporting base can swing up and down around the central axes of the circular shafts. According to the separated pipe bender, the pipe bending disc and the supporting seat can be quickly separated.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical technology and relates to a pipe bender, particularly a split-type pipe bender. Background Technology

[0002] A pipe bender is a tool used in the installation and piping of air conditioners to bend copper pipes.

[0003] An existing pipe bender, such as the one previously proposed by the applicant (application number: 202221723687.8), includes a first force-applying rod, a bending die and a support seat that are engaged by a crank rotation. The bending die is provided with a second force-applying rod. A roller that engages with the bending die is rotatably mounted on one side of the support seat. The first force-applying rod includes a straight rod body, one end of which is a gripping part. The other side of the support seat is formed with an inclined mounting surface, and the angle between the extension line of the mounting surface and the crank axis is an acute angle. The first force-applying rod also includes an inclined block disposed at the other end of the straight rod body and engaging with the support surface. The angle between the inclined block and the straight rod body is an obtuse angle, and the inclined block is attached to the mounting surface. The middle part of the inclined block is hinged to the support seat through a shaft perpendicular to the mounting surface. A locking structure is provided between the support seat and the inclined block to lock the inclined block in two positions, 0 degrees and 180 degrees, respectively. The locking structure can be released from the restriction of the inclined block by rotating the first force-applying rod with external force.

[0004] In the above-mentioned pipe bender, the support base and the bending die are connected together by a crank, and the two cannot be quickly disassembled, which is not conducive to the operation, carrying, packaging and storage of the pipe bender. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a separate pipe bender that enables rapid separation of the bending die and the support base.

[0006] The objective of this utility model can be achieved through the following technical solution: A split-type pipe bender includes a pipe bending disc with an arc groove and a support seat disposed on the left side of the pipe bending disc. A roller that rotatably engages with the arc groove is disposed on the support seat. A handle is connected to the lower side of the support seat and the lower side of the pipe bending disc. The support seat includes two connecting pieces arranged side by side, and the two connecting pieces are respectively disposed on the axial sides of the pipe bending disc. Both axial sides of the pipe bending disc have a round shaft, and the central axes of the round shaft and the arc groove are collinear. The upper right end of each of the two connecting pieces is provided with a U-shaped groove that matches the round shaft. The two round shafts are respectively inserted into the two U-shaped grooves so that the support seat can swing up and down around the central axis of the round shaft.

[0007] In use, the copper tube is clamped between the roller and the arc groove, and as the support swings, the copper tube bends and deforms according to the shape of the arc groove, thus realizing the tube bending operation.

[0008] With the cooperation of the U-shaped groove and the round shaft, the support seat can swing up and down relative to the bending disc to perform the bending operation. The round shaft can also be inserted into or extended out of the U-shaped groove to achieve quick engagement or separation of the support seat and the bending disc, which is convenient for the operation, carrying, packaging and storage of the pipe bender.

[0009] In the above-mentioned split pipe bender, the bender disc has an axially penetrating connecting hole, and a connecting shaft is fixed inside the connecting hole. Both ends of the connecting shaft extend out of the connecting hole, and the two ends of the connecting shaft are two of the above-mentioned round shafts. That is, by installing one connecting shaft, two cylindrical structures can be completed, which has the advantages of simple structure and convenient assembly.

[0010] In the aforementioned split-type pipe bender, both the bottom of the pipe bender disc and the support base have connecting posts. The upper end of the handle is hollow, and the upper ends of the two handles are respectively sleeved on the two connecting posts. The handles and the corresponding connecting posts are detachably fixed together.

[0011] In the aforementioned split-type pipe bender, a mounting hole is radially opened on the side wall of the connecting column. A limiting rod and a spring that tend to extend one end of the limiting rod out of the mounting hole are slidably installed in the mounting hole. A limiting part is correspondingly provided at the upper end of the handle. The limiting part and the end of the limiting rod that extends out of the mounting hole cooperate to lock the handle on the corresponding connecting column. Furthermore, the limiting rod can be operated outside the handle to move away from the limiting part against the spring force.

[0012] In the aforementioned split-type pipe bender, a strip groove is provided through the upper side wall of the handle, with the upper end of the strip groove open and the lower end closed; two mounting holes are respectively aligned and connected to the two strip grooves, and the outer end of the limiting rod passes through the corresponding strip groove; the outer end and middle part of the limiting rod are respectively the clearance section and the limiting section, and the outer diameter of the clearance section is smaller than the outer diameter of the limiting section; the strip groove is composed of straight grooves and limiting holes that are continuously distributed vertically, and the straight grooves are used to allow the clearance section to slide out of the strip groove along the handle axis; the limiting part is the aforementioned limiting hole, and under the action of the spring, the limiting section is located in the limiting hole and restricts the limiting rod from sliding along the handle axis; the mounting hole is also provided with a limiting structure for limiting the outward sliding distance of the limiting rod.

[0013] When in use, after the handle is inserted into the connecting post, the limiting section is in the limiting hole, which not only restricts the up and down sliding of the handle, but also makes the handle and the connecting post form a circumferential fit, thereby stably locking the handle on the connecting post. When it is necessary to remove the handle, press the relief section to make the limiting rod move inward against the spring force, so that the relief section enters the limiting hole and aligns with the straight groove. Then, slide the handle down to separate it from the connecting post. It has the advantages of being convenient and easy to use.

[0014] The handle can be quickly assembled and disassembled by pressing the limit rod, which has the advantages of simple structure and easy use.

[0015] In the aforementioned split-type pipe bender, the limiting hole is a circular hole, and the limiting hole and the limiting section are fitted through circumferential surface contact. The diameter of the limiting hole is larger than the width of the straight groove. This design facilitates design and manufacturing.

[0016] As another option, in the aforementioned split-type pipe bender, the mounting hole is through-hole, and a corresponding clearance groove is through-hole on the upper side wall of the handle, with the upper end of the clearance groove open; the aforementioned limiting part is a notch formed on the inner wall of the handle for inserting one end of the limiting rod, the shape and size of the clearance groove are matched with the other end of the limiting rod, and the other end of the limiting rod passes through the clearance groove, so that pulling the other end of the limiting rod can also separate the limiting rod from the notch, thereby unlocking the handle.

[0017] In the aforementioned split-type pipe bender, the limiting structure includes an annular seat formed on the outer wall of the inner end of the limiting rod and an annular retaining edge formed on the inner wall of the mounting hole. The annular seat is located between the annular retaining edge and the spring, and the inner diameter of the annular retaining edge is smaller than the outer diameter of the annular seat. The annular seat restricts the movement of the limiting rod by contacting the annular retaining edge, which has the advantages of simple structure and stable operation.

[0018] In the aforementioned split-type pipe bender, an annular step is formed on the outer wall of the connecting column, and the top surface of the handle presses against the bottom wall of the annular step to limit the position of the handle, so that the handle can be moved into place in one go, facilitating locking operation.

[0019] In the aforementioned split-type pipe bender, the axial side of the pipe bender has an arc-shaped dial portion, and an observation port facing the dial portion is provided through the connecting piece on the same side as the dial portion, making it convenient for the user to read the value.

[0020] In the aforementioned split-type pipe bender, a handle is fixed on the clearance section, and the handle size is larger than the limit hole to prevent the limit rod from retracting excessively into the mounting hole and affecting its use.

[0021] Compared with existing technologies, this split-type pipe bender has the following advantages:

[0022] 1. With the cooperation of U-shaped groove and round shaft, the support seat can swing up and down relative to the bending plate to perform bending operation. The round shaft can also be inserted into or extended out of the U-shaped groove to achieve quick engagement or separation of the support seat and bending plate, which is convenient for operation, carrying, packaging and storage of the pipe bender.

[0023] 2. The handle can be quickly assembled and disassembled by pressing the limit rod, which has the advantages of simple structure and easy use. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of this split-type pipe bender.

[0025] Figure 2 This is a cross-sectional schematic diagram of this split-type pipe bender.

[0026] Figure 3 yes Figure 2 Enlarged diagram of point A in the middle.

[0027] Figure 4 This is a schematic diagram of the cooperation between the strip groove and the limiting rod.

[0028] In the diagram, 1. Bending plate; 1a. Arc groove; 1b. Dial section; 2. Support base; 2a. Connecting piece; 2b. U-shaped groove; 2c. Observation port; 3. Roller; 4. Handle; 4a. Strip groove; 4a1. Straight groove; 4a2. Limiting hole; 5. Connecting shaft; 5a. Round shaft; 6. Connecting column; 6a. Mounting hole; 6b. Annular step; 7. Limiting rod; 7a. Clearance section; 7b. Limiting section; 7c. Annular seat; 8. Spring; 9. Handle. Detailed Implementation

[0029] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0030] Example 1: This split-type pipe bender includes a pipe bending disc 1 with an arc groove 1a and a support base 2 located on the left side of the pipe bending disc 1. A roller 3, which rotatably engages with the arc groove 1a, is mounted on the support base 2. At this time, the roller 3 is positioned to the left of the arc groove 1a, and a bending space is formed between the roller 3 and the arc groove 1a. Handles 4 are connected to the lower sides of both the support base 2 and the pipe bending disc 1.

[0031] Specifically

[0032] The support base 2 includes two connecting pieces 2a arranged side by side, with the two connecting pieces 2a respectively positioned on both axial sides of the bending disc 1. The bending disc 1 is positioned between the two connecting pieces 2a. Both axial sides of the bending disc 1 have a circular shaft 5a, and the central axes of the circular shaft 5a and the circular arc groove 1a are collinear. U-shaped grooves 2b matching the circular shaft 5a are formed on the upper right side of each connecting piece 2a. The two circular shafts 5a are inserted into the two U-shaped grooves 2b respectively, allowing the support base 2 to swing up and down around the central axis of the circular shaft 5a.

[0033] In use, the copper tube is clamped between the roller 3 and the arc groove 1a, and as the support 2 swings, the copper tube bends and deforms according to the shape of the arc groove 1a, thus realizing the tube bending operation.

[0034] With the cooperation of the U-shaped groove 2b and the round shaft 5a, the support seat 2 can swing up and down relative to the bending disc 1 to perform bending operations. The round shaft 5a can also be inserted into or extended out of the U-shaped groove 2b to achieve quick engagement or separation of the support seat 2 and the bending disc 1, which is convenient for the operation, carrying, packaging and storage of the pipe bender.

[0035] To further explain, the axial side of the bending disc 1 has an arc-shaped dial portion 1b, and the central axes of the dial portion 1b and the arc groove 1a are collinear. An observation port 2c, directly opposite the dial portion 1b, is provided through this connecting piece 2a on the same side as the dial portion 1b, facilitating user reading. At this time, the axis of the observation port 2c is parallel to the axis of the bending disc 1.

[0036] In this embodiment,

[0037] The two ends of the roller 3 are respectively rotatably mounted on the two connecting plates 2a to simultaneously enhance the positioning and working stability of the roller 3.

[0038] A connecting hole is axially inserted into the bend plate 1, and a connecting shaft 5 is fixed inside the connecting hole. Both ends of the connecting shaft 5 extend out of the connecting hole, and each end of the connecting shaft 5 is one of the aforementioned round shafts 5a. That is, by installing one connecting shaft 5, the two cylinders can be set up, which has the advantages of simple structure and convenient assembly. Of course, it is also possible for the round shafts 5a to be two independent shafts.

[0039] like Figure 2 and Figure 3 As shown, the handle 4 is installed as follows: both the bottom of the bend plate 1 and the support base 2 have connecting posts 6. The upper end of the handle 4 is hollow, and the upper ends of the two handles 4 are respectively sleeved on the two connecting posts 6, and the handles 4 and the corresponding connecting posts 6 are detachably fixed. Specifically, the side wall of the connecting post 6 has a radially opened mounting hole 6a. A limiting rod 7 and a spring 8 that tend to extend one end of the limiting rod 7 out of the mounting hole 6a are slidably provided in the mounting hole 6a. The upper end of the handle 4 has a corresponding limiting part. The limiting part and the end of the limiting rod 7 that extends out of the mounting hole 6a cooperate to lock the handle 4 on the corresponding connecting post 6. The limiting rod 7 can be operated outside the handle 4 to move away from the limiting part against the elastic force of the spring 8.

[0040] In this embodiment, as Figure 3 and Figure 4 As shown, a strip groove 4a is provided through the upper side wall of the handle 4. The length of the strip groove 4a extends along the axial direction of the handle 4, and the upper end of the strip groove 4a is open and the lower end is closed. Two mounting holes 6a are respectively aligned with and connected to the two strip grooves 4a, and the outer end of the limiting rod 7 passes through the corresponding strip groove 4a. The outer end and the middle part of the limiting rod 7 are respectively the clearance section 7a and the limiting section 7b, and the outer diameter of the clearance section 7a is smaller than the outer diameter of the limiting section 7b. The strip groove 4a is composed of a straight groove 4a1 and a limiting hole 4a2 that are continuously distributed vertically, and the lower end of the straight groove 4a1 is connected to the limiting hole 4a2. The straight groove 4a1 is used to allow the clearance section 7a to slide out of the strip groove 4a along the axial direction of the handle 4; the shape and size of the limiting hole 4a2 are matched with the limiting rod 7, and the limiting part is the aforementioned limiting hole 4a2. Under the action of the spring 8, the limiting section 7b is located in the limiting hole 4a2 and restricts the limiting rod 7 from sliding along the axial direction of the handle 4. The mounting hole 6a is also provided with a limiting structure to limit the outward sliding distance of the limiting rod 7.

[0041] When in use, after the handle 4 is inserted into the connecting post 6, the limiting section 7b is in the limiting hole 4a2, which not only restricts the up and down sliding of the handle 4, but also makes the handle 4 and the connecting post 6 form a circumferential fit, thereby stably locking the handle 4 onto the connecting post 6. When it is necessary to remove the handle 4, press the relief section 7a to make the limiting rod 7 move inward against the elastic force of the spring 8, so that the relief section 7a enters the limiting hole 4a2 and aligns with the straight groove 4a1. Then, slide the handle 4 down to separate it from the connecting post 6. It has the advantages of being convenient and easy to use.

[0042] The handle 4 can be quickly disassembled and assembled by pressing the limit rod 7, which has the advantages of simple structure and easy use.

[0043] To further explain, the limiting hole 4a2 is a circular hole, and the limiting hole 4a2 and the limiting section 7b are engaged through circumferential surface contact. The diameter of the limiting hole 4a2 is larger than the width of the straight groove 4a1. This design facilitates design and manufacturing. Preferably, the diameter of the clearance section 7a is smaller than the width of the straight groove 4a1, allowing the clearance section 7a to slide more smoothly outward through the straight groove 4a1.

[0044] The limiting structure is as follows: Figure 3 As shown, the limiting structure includes an annular seat 7c formed on the outer wall of the inner end of the limiting rod 7 and an annular retaining edge formed on the inner wall of the mounting hole 6a. The annular seat 7c and the limiting rod 7 are coaxially arranged, and the annular retaining edge is coaxially arranged with the mounting hole 6a. The annular seat 7c is located between the annular retaining edge and the spring 8, and the inner diameter of the annular retaining edge is smaller than the outer diameter of the annular seat 7c. The annular seat 7c restricts the movement of the limiting rod 7 by contacting the annular retaining edge, which has the advantages of simple structure and stable operation. At this time, the two ends of the spring 8 press against the inner walls of the corresponding annular seat 7c and the corresponding mounting hole 6a, respectively.

[0045] In the actual product, an annular step 6b is formed on the outer wall of the connecting column 6, and the top surface of the handle 4 presses against the bottom wall of the annular step 6b to limit the insertion position of the handle 4, so that the handle 4 moves into place in one go, facilitating locking operation. A handle 9 is fixed on the clearance section 7a, and the size of the handle 9 is larger than the limiting hole 4a2 to prevent the limiting rod 7 from retracting excessively into the mounting hole 6a, affecting use.

[0046] Example 2: The structure and principle of Example 2 are basically the same as those of Example 1. The difference is that the mounting hole 6a is through-hole, and a clearance groove is correspondingly through-hole on the upper side wall of the handle 4, with the upper end of the clearance groove being open. The aforementioned limiting part is a notch opened on the inner wall of the handle 4 for one end of the limiting rod 7 to be inserted. The shape and size of the clearance groove are matched with the other end of the limiting rod 7, and the other end of the limiting rod 7 passes through the clearance groove. Thus, pulling the other end of the limiting rod 7 can also separate the limiting rod 7 from the notch, thereby unlocking the handle 4.

[0047] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A split-type pipe bender, comprising a pipe bender disc (1) having an arc groove (1a) and a support base (2) disposed on the left side of the pipe bender disc (1), wherein a roller (3) cooperating with the arc groove (1a) is rotatably mounted on the support base (2), and a handle (4) is connected to the lower side of both the support base (2) and the lower side of the pipe bender disc (1), characterized in that, The support base (2) includes two connecting pieces (2a) arranged side by side, and the two connecting pieces (2a) are respectively arranged on the axial sides of the bending disc (1); both sides of the bending disc (1) have a round shaft (5a), and the central axes of the round shaft (5a) and the arc groove (1a) are collinear; the upper right side of the two connecting pieces (2a) is provided with a U-shaped groove (2b) that matches the round shaft (5a), and the two round shafts (5a) are respectively inserted into the two U-shaped grooves (2b) so that the support base (2) can swing up and down around the central axis of the round shaft (5a).

2. The split-type pipe bender according to claim 1, characterized in that, The above-mentioned bent pipe disc (1) has a connecting hole that runs through it axially. A connecting shaft (5) is fixed inside the connecting hole. Both ends of the connecting shaft (5) extend out of the connecting hole, and the two ends of the connecting shaft (5) are the two round shafts (5a) mentioned above.

3. The split-type pipe bender according to claim 1 or 2, characterized in that, Both the bottom of the bending plate (1) and the support base (2) have connecting posts (6). The upper end of the handle (4) is hollow. The upper ends of the two handles (4) are respectively sleeved on the two connecting posts (6), and the handles (4) and the corresponding connecting posts (6) are detachably fixed.

4. The split-type pipe bender according to claim 3, characterized in that, A mounting hole (6a) is radially provided on the side wall of the connecting column (6). A limiting rod (7) and a spring (8) are slidably provided in the mounting hole (6a) to make one end of the limiting rod (7) tend to extend out of the mounting hole (6a). A limiting part is provided on the upper end of the handle (4). The limiting part and the end of the limiting rod (7) extending out of the mounting hole (6a) cooperate to lock the handle (4) on the corresponding connecting column (6). The limiting rod (7) can be operated outside the handle (4) to overcome the elastic force of the spring (8) and move away from the limiting part.

5. The split-type pipe bender according to claim 4, characterized in that, A strip groove (4a) is provided through the upper side wall of the handle (4), with the upper end of the strip groove (4a) open and the lower end closed; two mounting holes (6a) are respectively aligned with and connected to the two strip grooves (4a), and the outer end of the limiting rod (7) passes through the corresponding strip groove (4a); the outer end and the middle part of the limiting rod (7) are respectively the clearance section (7a) and the limiting section (7b), and the outer diameter of the clearance section (7a) is smaller than the outer diameter of the limiting section (7b); the strip grooves (4a) are continuously distributed vertically. It consists of a straight groove (4a1) and a limiting hole (4a2), and the straight groove (4a1) is used to allow the clearance section (7a) to slide out of the strip groove (4a) along the handle (4) axially; the limiting part is the aforementioned limiting hole (4a2), and under the action of the spring (8), the limiting section (7b) is located in the limiting hole (4a2) and restricts the limiting rod (7) from sliding along the handle (4) axially; the mounting hole (6a) is also provided with a limiting structure for limiting the outward sliding distance of the limiting rod (7).

6. The split-type pipe bender according to claim 5, characterized in that, The limiting hole (4a2) is a circular hole, and the limiting hole (4a2) and the limiting section (7b) are in contact and fit through the circumferential surface. The diameter of the limiting hole (4a2) is greater than the groove width of the straight groove (4a1).

7. The split-type pipe bender according to claim 4, characterized in that, The limiting structure includes an annular seat (7c) formed on the outer wall of the inner end of the limiting rod (7) and an annular retaining edge formed on the inner wall of the mounting hole (6a). The annular seat (7c) is located between the annular retaining edge and the spring (8), and the inner diameter of the annular retaining edge is smaller than the outer diameter of the annular seat (7c).

8. The split-type pipe bender according to claim 2, characterized in that, The outer wall of the connecting column (6) is formed with an annular step (6b), and the top surface of the handle (4) presses against the bottom wall of the annular step (6b).

9. The split-type pipe bender according to claim 1, characterized in that, The axial side of the bent tube plate (1) has an arc-shaped dial portion (1b), and an observation port (2c) facing the dial portion (1b) is provided through the connecting piece (2a) on the same side as the dial portion (1b).

10. The split-type pipe bender according to claim 5, characterized in that, A handle (9) is fixed on the clearance section (7a), and the size of the handle (9) is larger than that of the limiting hole (4a2).

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