Positioning clamp for pipe bending machine

Abstract

The utility model relates to a locating clamp for a pipe bender, which comprises a first moving mechanism, a second moving mechanism arranged on the first moving mechanism and a clamping mechanism arranged on the second moving mechanism, and the first moving mechanism and the second moving mechanism are used for driving the clamping mechanism to move. The clamping mechanism comprises a driving part, a mounting seat and a clamping groove disc arranged on the mounting seat, a plurality of clamping grooves are formed in the clamping groove disc, the driving part comprises a worm gear and a worm, the clamping grooves are fixedly connected with an output shaft of the worm gear, and the worm is fixedly connected with the worm gear. The driving part is used for driving the clamping groove disc to rotate so as to select the clamping groove matched with the pipe, the clamping groove is used for clamping the pipe, a containing groove is formed in the mounting base, and the clamping groove disc is arranged in the containing groove in the length direction of the containing groove. The positioning clamp for the pipe bending machine can provide multiple groups of clamping grooves with different sizes, which can be provided by a plurality of clamping devices originally.

Description

Technical Field

[0001] The utility model relates to the field of bent pipes, in particular to a positioning fixture for a pipe bender. Background Technique

[0002] A numerical control pipe bender is a common pipe bending device. When bending a pipe, generally, a machine head is used to clamp the pipe, define the bending radius of the pipe, and bend the pipe. To achieve the above functions, the machine head generally needs to include a driving component, a pipe bending fixture, a guiding system, and a pipe bending die. Among them, the pipe bending fixture is used to ensure that the pipe fitting remains stable during the bending process, preventing rotation or movement. It usually includes a moving mechanism and a clamping mechanism. The moving mechanism is used to drive the pipe bending fixture to clamp the pipe and perform corresponding displacements along with the movement of the pipe bending die. The clamping mechanism is used to clamp the pipe.

[0003] The existing clamping mechanisms are generally clamping tables or clamping wheels. Both the clamping table and the clamping wheel are provided with arc-shaped grooves for clamping the pipe. Both of them can clamp the pipe. However, most of the clamping tables or clamping wheels are only provided with a single arc-shaped groove. Different clamping tables or clamping wheels are required for pipes of different sizes. This requires multiple sets of clamping tables or clamping wheels to be provided on the clamping mechanism for replacement. When it is necessary to switch the clamping table or the clamping wheel, it is necessary to drive the clamping table to move up and down through the driving component to replace the arc-shaped groove for clamping the pipe. This makes the switching of the arc-shaped clamping groove relatively inconvenient. Moreover, multiple sets of clamping tables or clamping wheels will also make the overall clamping mechanism more complex. Even if some clamping tables or clamping wheels are provided with multiple sets of arc-shaped grooves of different sizes, these arc-shaped grooves are arranged vertically on the clamping table or the clamping wheel. When switching, it is also necessary to drive the clamping table or the clamping wheel to move up and down through the driving component, which will also make the switching of the arc-shaped clamping groove relatively inconvenient. To solve the above problems, a positioning fixture for a pipe bender is proposed. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a positioning fixture for a pipe bender to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A positioning fixture for a pipe bender includes a first moving mechanism, a second moving mechanism arranged on the first moving mechanism, and a clamping mechanism arranged on the second moving mechanism. The first moving mechanism and the second moving mechanism are used to drive the clamping mechanism to move;

[0007] The clamping mechanism includes a driving member, a mounting seat, and a clamping groove disk disposed on the mounting seat. A plurality of clamping grooves are formed on the clamping groove disk. The driving member includes a worm gear and a worm. The clamping groove is fixedly connected to the output shaft of the worm gear. The driving member is configured to drive the clamping groove disk to rotate so as to select the clamping groove adapted to the pipe, and the clamping groove is used for clamping the pipe.

[0008] Further, a placement groove is formed in the mounting seat, and the clamping groove disk is disposed in the placement groove along the length direction of the placement groove.

[0009] Further, the driving member further includes a rotating motor, the worm is detachably connected to the output end of the rotating motor, and the rotating motor is configured to drive the worm to rotate.

[0010] Further, the number of the clamping grooves is several, and several clamping grooves are annularly arranged on the clamping groove disk. The sizes of several clamping grooves are different. A plurality of limiting grooves opposite to the clamping grooves are further formed on the end of the clamping groove disk away from the driving member.

[0011] Further, the clamping mechanism further includes a limiting member. The limiting member includes an electromagnet, a spring, and a limiting disk. A plurality of limiting pins opposite to the limiting grooves are arranged on the limiting disk. The limiting disk is connected to the electromagnet through the spring. A first channel opposite to the limiting pin is formed on the electromagnet. The electromagnet and the limiting disk are both disposed in the mounting seat. A second channel opposite to the limiting pin is further formed on the mounting seat. The electromagnet is configured to adsorb the limiting disk to drive the limiting pin to move.

[0012] Further, a sliding groove is further formed in the mounting seat. A sliding block opposite to the sliding groove is arranged on the limiting disk. The sliding groove and the sliding block are used in cooperation to make the limiting disk move more stably.

[0013] Further, the positioning fixture further includes a controller, and the first moving mechanism, the second moving mechanism, and the rotating motor are all controlled and connected to the controller.

[0014] Compared with the prior art, the beneficial effect of the present utility model is that the provided clamping assembly itself can provide clamping grooves with multiple sizes. When switching the clamping grooves, it is not necessary to replace the clamping grooves by switching the clamping assembly, which makes the switching of the clamping grooves faster. Moreover, one clamping assembly can provide multiple sets of clamping grooves with different sizes that originally required several clamping devices, which can simplify the structure of the clamping assembly. Description of the Drawings

[0015] Figure 1 It is a structural schematic diagram of a positioning fixture for a pipe bender.

[0016] Figure 2 An exploded view of the clamping mechanism of the positioning fixture for a pipe bender.

[0017] Figure 3 A side view of the clamping mechanism of the positioning fixture for a pipe bender.

[0018] Figure 4 A cross-sectional view of the clamping mechanism of the positioning fixture for a pipe bender.

[0019] In the figure: 1, moving frame; 2, lead screw; 3, base; 4, electric push rod; 5, clamping mechanism; 51, clamping groove disk; 52, clamping groove; 53, rotating shaft; 54, worm; 55, worm gear; 56, limit disk; 57, limit pin; 58, passage one; 59, electromagnet; 510, slider; 511, limit groove; 512, mounting seat; 513, placing groove; 514, rotating motor; 515, spring; 6, controller. Detailed implementation manners

[0020] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the drawings denote elements having the same or similar functions. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0021] The special term "exemplary" here means "serving as an example, embodiment or illustration". Any embodiment described as "exemplary" here is not necessarily to be construed as superior or better than other embodiments.

[0022] In addition, in order to better illustrate the present application, numerous specific details are given in the following detailed embodiments. Those skilled in the art should understand that the present application can also be implemented without some specific details. In some instances, methods, means, and elements well known to those skilled in the art are not described in detail so as to highlight the gist of the present application.

[0023] Example 1, please refer to Figures 1 to 4In the structure shown, in an embodiment of the present utility model, a positioning fixture for a pipe bender includes a first moving mechanism, a second moving mechanism provided on the first moving mechanism, and a clamping mechanism 5 provided on the second moving mechanism. The first moving mechanism includes a moving frame 1 and a lead screw 2. The lead screw 2 is provided on the moving frame 1 and is driven to rotate by a motor (not shown in the figure). The second moving mechanism includes a base 3 and an electric push rod 4. A nut seat is threadedly connected to the lead screw 2, and the base 3 is screwed to the nut seat. When the motor drives the lead screw 2 to rotate, the nut seat will move along the length direction of the lead screw 2, and the base 3 moves along with the movement of the nut seat. The clamping mechanism 5 is provided on the moving end of the electric push rod 4, and the electric push rod 4 is used to drive the clamping mechanism 5 to move. The moving direction of the moving end of the electric push rod 4 is perpendicular to the moving direction of the lead screw 2. By using the first moving mechanism and the second moving mechanism in cooperation, the movement of the clamping mechanism 5 in the plane is completed.

[0024] The clamping mechanism 5 includes a driving member, a mounting seat 512, and a clamping groove disc 51 provided on the mounting seat 512. A plurality of clamping grooves 52 are formed on the clamping groove disc 51. The driving member includes a worm wheel 55 and a worm 54. The clamping groove 52 is fixedly connected to the output shaft of the worm wheel 55. The driving member is used to drive the clamping groove disc 51 to rotate to select a clamping groove 52 suitable for the pipe to be clamped, and the clamping groove 52 is used to clamp the pipe.

[0025] In this embodiment, the worm 54 and the worm wheel 55 are meshed with each other. A through hole for the output shaft of the worm wheel 55 to pass through is formed on the mounting seat 512. The output shaft of the worm wheel 55 passes through the through hole and is rotatably connected to the through hole through a bearing and a spline. One end of the output shaft of the worm wheel 55 is fixedly connected to the middle position of the side wall of the clamping groove disc 51 by welding. The other side of the clamping groove disc 51 is installed on the mounting seat 512 through a rotating shaft 53. When the worm wheel 55 rotates, the clamping groove disc 51 will also rotate accordingly.

[0026] Further, a placing groove 513 is formed in the mounting seat 512, and the clamping groove disc 51 is arranged in the placing groove 513 along the length direction of the placing groove 513.

[0027] In this embodiment, the clamping groove disc 51 can rotate freely in the placing groove 513, and a part of the clamping groove disc 51 is located outside the placing groove 513, so that part of the clamping grooves 52 are located outside the placing groove 513, which is convenient for clamping the pipe.

[0028] Further, the driving member further includes a rotating motor 514. The worm 54 is detachably connected to the output end of the rotating motor 514, and the rotating motor 514 is used to drive the worm 54 to rotate.

[0029] In this embodiment, a placement table is provided on the side wall of the mounting base 512. The rotation motor 514 and the worm 54 are both arranged on the placement table. An electric motor driver, a sensor, an encoder, and a communication interface are provided on the rotation motor 514 for controlling the rotation speed, rotation direction, start, and stop of the rotation motor 514.

[0030] Further, the number of the clamping grooves 52 is several. The several clamping grooves 52 are annularly arrayed on the clamping groove disc 51. The sizes of the several clamping grooves 52 are different. A plurality of limiting grooves 511 opposite to the clamping grooves 52 are also formed at the end of the clamping groove disc 51 away from the driving member.

[0031] Further, the clamping mechanism 5 further includes a limiting member. The limiting member includes an electromagnet 59, a spring 515, and a limiting disc 56. A plurality of limiting pins 57 opposite to the limiting grooves 511 are provided on the limiting disc 56. The limiting disc 56 is connected to the electromagnet 59 through the spring 515. A first channel 58 opposite to the limiting pins 57 is formed on the electromagnet 59. Both the electromagnet 59 and the limiting disc 56 are arranged in the mounting base 512. A second channel opposite to the limiting pins 57 is also provided on the mounting base 512. The electromagnet 59 is used to adsorb the limiting disc 56 to drive the movement of the limiting pins 57.

[0032] In this embodiment, a mounting groove is further formed in the mounting base 512. The mounting groove is not communicated with the placement groove 513. Both the limiting disc 56 and the electromagnet 59 are arranged in the mounting groove. The electromagnet 59 is closer to the placement groove 513 than the limiting disc 56. When the electromagnet 59 and the limiting disc 56 are at the farthest positions, that is, when the electromagnet 59 is not powered on, the limiting pins 57 pass through the first channel 58 and the second channel and extend into the placement groove 513. The limiting member and the driving member are respectively arranged on both sides of the mounting base 512. The number of the clamping grooves 52, the limiting grooves 511, the limiting pins 57, the first channel 58, and the second channel are equal, and they are all arranged in an annular array manner, and the angles of the annular array are also the same. It should be noted that the clamping grooves 52 for clamping the pipe grooves need to be placed horizontally and cannot be inclined relative to the pipe. According to the diameter of the pipe, select the clamping groove 52 adapted to the diameter of the pipe to clamp the pipe. When switching the clamping groove 52 for clamping the pipe, start the rotation motor 514, drive the clamping groove disc 51 to rotate through the worm 54 and the worm gear 55, and the rotation angle is an integer multiple of the angle of the annular array, so that the clamping groove 52 adapted to the pipe is opposite to the pipe. After the clamping groove 52 is selected, power on the electromagnet 59 to adsorb the limiting disc 56 and make it move. The limiting pins 57 originally located outside the limiting grooves 511 move into the limiting grooves 511 to clamp the clamping groove disc 51, which can prevent the clamping groove disc 51 from shaking when clamping the pipe and prevent the problem that the clamping groove disc 51 cannot stably clamp the pipe due to shaking. The spring 515 can reset the limiting disc 56 by its elastic force after the electromagnet 59 is powered off.

[0033] Further, a chute is also provided in the mounting base 512, and a slider 510 opposite to the chute is provided on the limiting disc 56. The cooperation between the chute and the slider 510 makes the limiting disc 56 move stably.

[0034] Further, the positioning fixture further includes a controller 6, and the first moving mechanism, the second moving mechanism, and the rotating motor 514 are all controlled and connected to the controller 6.

[0035] In this embodiment, the controller 6 can be an integrated circuit board, which includes a microprocessor, an input / output interface, and a communication interface, and can control the movement of the clamping assembly 5 and the selection of the clamping groove 52.

[0036] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be construed as limiting the claimed invention.

[0037] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A positioning fixture for a pipe bending machine, characterized in that: It comprises a moving mechanism 1, a moving mechanism 2 arranged on the moving mechanism 1, and a clamping mechanism arranged on the moving mechanism 2, wherein the moving mechanism 1 and the moving mechanism 2 are used to drive the clamping mechanism to move; The clamping mechanism includes a driving member, a mounting seat, and a clamping groove disk arranged on the mounting seat, wherein the clamping groove disk is provided with a plurality of clamping grooves, the driving member includes a worm wheel and a worm, and the clamping groove is fixedly connected to the output shaft of the worm wheel. The driving member is used to drive the clamping groove disk to rotate to select the clamping groove that is suitable for the pipe, and the clamping groove is used to clamp the pipe.

2. A positioning fixture for a pipe bending machine according to claim 1, characterized in that: A placement groove is provided in the mounting seat, and the clamping groove plate is arranged in the placement groove along the length direction of the placement groove.

3. A positioning fixture for a pipe bender according to claim 2, characterized in that: The driving member further comprises a rotating motor, the worm is detachably connected to an output end of the rotating motor, and the rotating motor is used to drive the worm to rotate.

4. A positioning fixture for a pipe bender according to claim 3, characterized in that: The number of the clamping grooves is several, and the clamping grooves are arranged in a circular array on the clamping groove plate. The sizes of the clamping grooves are different. The end of the clamping groove plate away from the driving member is also provided with several limiting grooves opposite to the clamping grooves.

5. A positioning fixture for a pipe bender according to claim 4, characterized in that: The clamping mechanism also includes a limit member, which includes an electromagnet, a spring and a limit plate. The limit plate is provided with a plurality of limit pins opposite to the limit groove. The limit plate is connected to the electromagnet through the spring. The electromagnet is provided with a channel 1 opposite to the limit pin. The electromagnet and the limit plate are both arranged in the mounting seat. The mounting seat is also provided with a channel 2 opposite to the limit pin. The electromagnet is used to adsorb the limit plate to drive the limit pin to move.

6. A positioning fixture for a pipe bender according to claim 5, characterized in that: A slide groove is also arranged in the mounting seat, and a sliding block opposite to the slide groove is arranged on the limiting plate. The slide groove and the sliding block are used in coordination to make the limiting plate more stable when moving.

7. A positioning fixture for a pipe bender according to claim 6, characterized in that: The positioning fixture also includes a controller, and the moving mechanism 1, the moving mechanism 2 and the rotating motor are all control-connected to the controller.

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