Hydraulic pipe bending machine

Abstract

The utility model discloses a hydraulic pipe bending machine which comprises a bottom plate, a driving pressing die, a driven pressing die, a first bending wheel and a second bending wheel, and the fixed first bending wheel and the telescopic second bending wheel are matched with a first shaping edge and a second shaping edge respectively. The purpose of bending two symmetrical sections of the two ends of the pipe fitting through one-time feeding is achieved.

Description

Technical Field

[0001] The utility model relates to the field of pipe processing equipment, in particular to a hydraulic pipe bending machine. Background Art

[0002] In order to bend pipe fittings, the invention patent with application number CN202410207463.9 discloses a hydraulic pipe bender, including a base plate, a bracket is provided on the base plate, a lifting drive member is fixedly installed on the front and upper position of the bracket, and a connecting block A is fixedly connected to the output end of the lifting drive member, an upper pressure die is provided at the bottom end of the connecting block A, a lower support die is provided below the upper pressure die, a connecting block B is provided below the lower support die, and a slide groove is provided on one side of the bracket; the problem that the adjustment angle of the support piles of the general hydraulic pipe bender is limited is solved. In the process of bending the pipe fittings, this technical solution can only perform a single single-angle bending in a single feeding, and cannot realize multi-angle bending of the two ends of the pipe fittings twice or even multiple times at the same time. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a hydraulic pipe bending machine, which can achieve the purpose of symmetrically bending two ends of a pipe with a single feed.

[0004] According to the first embodiment of the present invention, the hydraulic pipe bender comprises:

[0005] Base plate;

[0006] An active die is arranged on the bottom plate, the active die is connected to a first driving mechanism, the first driving mechanism is used to drive the active die to reciprocate along a straight line on the bottom plate, both sides of the active die are provided with a first shaping edge and a second shaping edge, one end of the first shaping edge is connected to the front side of the active die, and the other end is connected to the second shaping edge, and the second shaping edge and the first shaping edge form an angle;

[0007] A passive die is arranged corresponding to the active die, the passive die is connected to a reset mechanism, and the reset mechanism drives the passive die to move toward the active die;

[0008] Two first bending wheels are provided, the two first bending wheels are symmetrically arranged on both sides of the passive die, the first bending wheels are pivotally mounted on the bottom plate, and the first bending wheels cooperate with the first shaping edge so that part of the workpiece is located between the first shaping edge and the first bending wheels;

[0009] There are two second bending wheels, and the second bending wheels are connected to a second driving mechanism. The second driving mechanism is used to drive the second bending wheel to move back and forth in a straight line. The moving path of the second bending wheel is parallel to the second shaping edge. The second bending wheel and the second shaping edge cooperate to make part of the workpiece located between the second shaping edge and the second bending wheel.

[0010] The hydraulic pipe bender according to the embodiment of the utility model has at least the following beneficial effects: by respectively cooperating with the first shaping edge and the second shaping edge with the fixed first bending wheel and the retractable second bending wheel, the purpose of symmetrically bending the two ends of the pipe can be achieved with a single feed.

[0011] According to some embodiments of the present invention, two ends of the first shaping edge are smoothly transitioned to the second shaping edge and the front side of the active die respectively.

[0012] According to some embodiments of the utility model, the first driving mechanism is a hydraulic cylinder, which is fixedly connected to the base plate; the second driving mechanism is a pneumatic cylinder, which is fixedly connected to the base plate; the driving direction of the second driving mechanism is parallel to the second shaping edge, and the second bending wheel can be pushed by the second driving mechanism so that the second bending wheel fits the second shaping edge.

[0013] According to some embodiments of the present utility model, the driving end of the second driving mechanism is fixedly connected to a frame, and the second bending wheel is pivotally installed in the frame.

[0014] According to some embodiments of the utility model, along the edge of the active die, the active die is provided with a first limiting groove matching the shape of the pipe fitting, and the passive die is provided with a second limiting groove on the side facing the active die, and the second limiting groove can cooperate with the first limiting groove to clamp the pipe fitting.

[0015] According to some embodiments of the utility model, one end of the base plate away from the active die is fixedly connected to a fixed seat, at least two guide rods are arranged through the fixed seat, one end of the guide rod is fixedly connected to the passive die, and the other end can slide in a straight line on the fixed seat, and the reset mechanism is arranged between the passive die and the fixed seat.

[0016] According to some embodiments of the utility model, the reset mechanism is a spring, one end of the spring is fixedly connected to the fixing seat, and the other end of the spring is fixedly connected to the passive die.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0019] Figure 1 A schematic diagram of a hydraulic pipe bender in one direction according to an embodiment of the utility model;

[0020] Figure 2 Schematic diagram of different steps of the tube on the active die;

[0021] Figure 3 This is a schematic diagram of the hydraulic pipe bender according to an embodiment of the utility model from another direction.

[0022] 100, bottom plate; 110, fixing seat; 120, guide rod;

[0023] 200, active die; 210, first driving mechanism; 220, first shaping edge; 230, second shaping edge; 240, first limiting groove;

[0024] 300, passive die; 310, reset mechanism; 320, second limiting groove;

[0025] 400, first bending wheel;

[0026] 500, second bending wheel; 510, second driving mechanism; 520, frame; DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0030] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0031] Reference Figures 1 to 3 The hydraulic pipe bender of the utility model embodiment includes a base plate 100, an active die 200, a passive die 300, a first bending wheel 400 and a second bending wheel 500. The active die 200 is arranged on the base plate 100, and the active die 200 is connected to a first driving mechanism 210. The first driving mechanism 210 is used to drive the active die 200 to reciprocate along a straight line on the base plate 100. Both sides of the active die 200 are provided with a first shaping edge 220 and a second shaping edge 230. One end of the first shaping edge 220 is connected to the front side of the active die 200, and the other end is connected to the second shaping edge 230. The second shaping edge 230 and the first shaping edge 220 are at an angle. The passive die 300 is correspondingly arranged with the active die 200, and the passive die 300 is connected to a reset mechanism 310. The reset mechanism 310 drives The passive die 300 is moved toward the active die 200; two first bending wheels 400 are provided, and the two first bending wheels 400 are symmetrically arranged on both sides of the passive die 300, and the first bending wheel 400 is pivotally mounted on the base plate 100, and the first bending wheel 400 cooperates with the first shaping edge 220 so that part of the workpiece is located between the first shaping edge 220 and the first bending wheel 400; two second bending wheels 500 are provided, and the second bending wheel 500 is connected to a second driving mechanism 510, and the second driving mechanism 510 is used to drive the second bending wheel 500 to reciprocate along a straight line, and the moving path of the second bending wheel 500 is parallel to the second shaping edge 230, and the second bending wheel 500 and the second shaping edge 230 cooperate so that part of the workpiece is located between the second shaping edge 230 and the second bending wheel 500.

[0032] In actual use, the following steps are performed:

[0033] Step 1: Put the pipe (in Figure 2 The pipe 1A is placed between the active die 200 and the passive die 300;

[0034] Step 2: Using the driving inertia of the reset mechanism 310, the active die 200 and the passive die 300 are closed and the pipe is clamped;

[0035] Step 3: The first driving mechanism 210 drives the active die 200 to move toward the passive die 300, so that the first shaping edge 220 approaches the first bending wheels 400 on both sides, so that the clamped pipe is in contact with the first bending wheels 400. As the active die 200 is gradually fed, the two ends of the pipe are bent for the first time under the extrusion of the first bending wheels 400, forming Figure 2 The status of pipe fitting 1B;

[0036] Step 4: The first driving mechanism 210 continuously drives the active die 200 to move toward the passive die 300. At the same time, the second driving mechanism 510 drives the second bending wheel 500 to move toward the active die 200. During the movement, the second bending wheel 500 first contacts the part of the pipe that has been bent once, and then cooperates with the second shaping edge 230 to perform a second bending on the pipe to form a Figure 2 The status of the pipe fitting 1C;

[0037] Step 5: The second driving mechanism 510 drives the second bending wheel 500 to move in the opposite direction, separates from the pipe, and makes room for the active pressing die 200 to reset;

[0038] Step 6: The active die 200 is driven to move in the opposite direction by the first driving mechanism 210. Meanwhile, the reset mechanism 310 drives the passive die 300 to keep clamping the pipe and reset the passive die 300 to the initial position.

[0039] Step seven: the first driving mechanism 210 continuously drives the active die 200 to move in the opposite direction, so that the active die 200 and the passive die 300 are separated, and the bent pipe is taken out.

[0040] In summary, by the fixed first bending wheel 400 and the retractable second bending wheel 500 respectively cooperating with the first shaping edge 220 and the second shaping edge 230, the purpose of symmetrically bending the two ends of the pipe can be achieved with a single feed.

[0041] In some embodiments, both ends of the first shaping edge 220 are smoothly transitioned to the second shaping edge 230 and the front side of the active die 200, so that the bending position of the bent tube is smoothly transitioned and the stress in the bending area of ​​the tube is reduced.

[0042] In some embodiments, the first driving mechanism 210 is a hydraulic cylinder, which is fixedly connected to the base plate 100; the second driving mechanism 510 is a pneumatic cylinder, which is fixedly connected to the base plate 100; the driving direction of the second driving mechanism 510 is parallel to the second shaping edge 230, and the second bending wheel 500 can be pushed by the second driving mechanism 510 so that the second bending wheel 500 fits the second shaping edge 230.

[0043] In some embodiments, the driving end of the second driving mechanism 510 is fixedly connected to the frame 520, and the second bending wheel 500 is pivotally mounted in the frame 520. Specifically, the output end of the cylinder is fixedly connected to the frame 520, and when the cylinder drives the frame 520 to move, the frame 520 is attached to the surface of the bottom plate 100.

[0044] In order to fit the outer wall of the pipe and avoid causing wear to the outer wall, and at the same time avoid flattening the pipe during extrusion, in some embodiments, along the edge of the active die 200, the active die 200 is provided with a first limiting groove 240 that matches the shape of the pipe, and the passive die 300 is provided with a second limiting groove 320 on the side facing the active die 200, and the second limiting groove 320 can cooperate with the first limiting groove 240 to clamp the pipe.

[0045] In some embodiments, the end of the bottom plate 100 away from the active die 200 is fixedly connected to a fixed seat 110, and at least two guide rods 120 are arranged through the fixed seat 110. One end of the guide rod 120 is fixedly connected to the passive die 300, and the other end can slide along a straight line on the fixed seat 110. The reset mechanism 310 is arranged between the passive die 300 and the fixed seat 110. Through the sliding cooperation between the fixed seat 110 and the guide rod 120, the passive die 300 can reciprocate along a fixed straight line to constrain the travel path of the passive die 300. In addition, in some embodiments, the reset mechanism 310 is a spring, one end of the spring is fixedly connected to the fixed seat 110, and the other end is fixedly connected to the passive die 300.

[0046] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A hydraulic pipe bender, characterized in that: include: Bottom plate (100); An active die (200) is arranged on the base plate (100), the active die (200) is connected to a first driving mechanism (210), the first driving mechanism (210) is used to drive the active die (200) to reciprocate along a straight line on the base plate (100), a first shaping edge (220) and a second shaping edge (230) are arranged on both sides of the active die (200), one end of the first shaping edge (220) is connected to the front side of the active die (200), and the other end is connected to the second shaping edge (230), and the second shaping edge (230) and the first shaping edge (220) form an angle; A passive die (300) is arranged corresponding to the active die (200), the passive die (300) is connected to a reset mechanism (310), and the reset mechanism (310) drives the passive die (300) to move in the direction of the active die (200); Two first bending wheels (400) are provided, the two first bending wheels (400) are symmetrically arranged on both sides of the passive die (300), the first bending wheels (400) are pivotally mounted on the bottom plate (100), and the first bending wheels (400) cooperate with the first shaping edge (220) so that part of the workpiece is located between the first shaping edge (220) and the first bending wheels (400); Two second bending wheels (500) are provided. The second bending wheels (500) are connected to a second driving mechanism (510). The second driving mechanism (510) is used to drive the second bending wheel (500) to move back and forth along a straight line. The moving path of the second bending wheel (500) is parallel to the second shaping edge (230). The second bending wheel (500) and the second shaping edge (230) cooperate so that part of the workpiece is located between the second shaping edge (230) and the second bending wheel (500).

2. The hydraulic pipe bender according to claim 1, characterized in that: The two ends of the first shaping edge (220) are smoothly transitioned to the second shaping edge (230) and the front side of the active pressing die (200).

3. The hydraulic pipe bender according to claim 1, characterized in that: The first driving mechanism (210) is a hydraulic cylinder, which is fixedly connected to the base plate (100); the second driving mechanism (510) is a pneumatic cylinder, which is fixedly connected to the base plate (100); the driving direction of the second driving mechanism (510) is parallel to the second shaping edge (230), and the second bending wheel (500) can be pushed by the second driving mechanism (510) so that the second bending wheel (500) is in contact with the second shaping edge (230).

4. The hydraulic pipe bender according to claim 1, characterized in that: The driving end of the second driving mechanism (510) is fixedly connected to a frame (520), and the second bending wheel (500) is pivotally mounted in the frame (520).

5. The hydraulic pipe bender according to claim 1, characterized in that: Along the edge of the active die (200), the active die (200) is provided with a first limiting groove (240) matching the shape of the pipe fitting, and the passive die (300) is provided with a second limiting groove (320) on a side facing the active die (200), and the second limiting groove (320) can cooperate with the first limiting groove (240) to clamp the pipe fitting.

6. The hydraulic pipe bender according to claim 1, characterized in that: One end of the bottom plate (100) away from the active die (200) is fixedly connected to a fixed seat (110), and at least two guide rods (120) are arranged through the fixed seat (110), one end of the guide rod (120) is fixedly connected to the passive die (300), and the other end can slide along a straight line on the fixed seat (110), and the reset mechanism (310) is arranged between the passive die (300) and the fixed seat (110).

7. The hydraulic pipe bender according to claim 6, characterized in that: The reset mechanism (310) is a spring, one end of which is fixedly connected to the fixing seat (110), and the other end of which is fixedly connected to the passive pressing die (300).

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