Small radius arc cold bending machine

Abstract

The utility model relates to a small radius arc cold bending machine, comprising a workbench, two installation grooves are arranged horizontally on the workbench, a fixed block is arranged on the installation groove, a rotating shaft is arranged vertically on the fixed block, a rear mold is arranged on the upper end of the rotating shaft, a punch mechanism and a die mechanism are arranged longitudinally between the two rear molds, the punch mechanism comprises a longitudinally arranged slide groove, a slider is arranged on the slide groove, a punch is arranged on the upper end of the slider, a nut is arranged on the slider, a lead screw is arranged on the nut, a reducer is arranged at the front end of the workbench, the lead screw is installed on the reducer, a servo motor is arranged at the input end of the reducer, the die mechanism comprises a mounting seat, a guide rail is arranged longitudinally on the mounting seat, a slide seat is arranged on the guide rail, a driver is arranged at the rear end of the mounting seat, the driver is connected to the slide seat, a fixed frame is arranged on the slide seat, a die is arranged at the front end of the fixed frame, and the punch cooperates with the die and the rear mold to perform cold pressing forming on the aluminum profile. It has the advantages of reasonable structural design, small radius arc processing by cold extrusion, high forming efficiency, good forming quality, etc.

Description

Technical field:

[0001] The utility model relates to the technical field of cold bending machines, in particular to a small-radius arc cold bending machine. Background technology:

[0002] Profiles sometimes need to be rounded during processing, such as commonly used aluminum profiles (such as Figure 8 When manufacturing doors, windows, curtain walls, sun rooms and other products, it is sometimes necessary to process the aluminum profile into an arc. The prior art generally uses a rolling machine to process the profile into an arc. The specific structure of the rolling machine can refer to the patents previously applied by our company, a rolling machine (authorization announcement number: CN210497808U) and a continuous rolling machine (authorization announcement number: CN210497806U).

[0003] The application of existing roll bending machines has effectively solved the technical problems of aluminum profiles in processing circular arcs. However, there are still some challenges in practical applications. For example, a technical problem that users have reported is that when the radius of the circular arc that needs to be processed by the aluminum profile is relatively small, the roll bending machine cannot be used for processing, and usually only a bending machine can be used for processing. The main reason why the roll bending machine cannot process small-radius arcs is the working mechanism of the roll bending machine, which is usually suitable for situations where the arc radius is greater than 100mm. When using bending technology for arc processing, due to the high structural strength of aluminum profiles, incisions are usually required for bending, which not only destroys the structural strength of the aluminum profile, but also the arc processing accuracy is relatively poor, so it is difficult to meet high-precision processing requirements. Therefore, it is necessary to improve and optimize the structure of the existing roll bending machine, in order to adopt cold extrusion to meet the processing requirements of small-radius arcs of aluminum profiles.

[0004] It should be noted that the above contents belong to the technical knowledge of the inventor and do not necessarily constitute prior art. Utility model content:

[0005] The utility model aims to solve the problems existing in the prior art and provide a small radius arc cold bending machine, which has the advantages of reasonable structural design, completing small radius arc processing by cold extrusion, high forming efficiency, good forming quality, etc.

[0006] The utility model achieves the above-mentioned purpose by adopting the following technical solutions:

[0007] A small radius arc cold bending machine comprises a workbench, wherein the workbench is provided with two mounting grooves at intervals in the horizontal direction, the mounting groove is provided with a fixed block, the fixed block is provided with a rotating shaft vertically, a rear mold is provided at the upper end of the rotating shaft, and a punch mechanism and a die mechanism are longitudinally spaced between the two rear molds, the punch mechanism comprises a slide groove longitudinally arranged on the workbench, a slider is provided on the slide groove, a punch is provided at the upper end of the slider, a nut is longitudinally arranged on the slider, a lead screw is provided on the nut, a reducer is provided at the front end of the workbench, the lead screw is installed on the reducer, a servo motor is provided at the input end of the reducer, the die mechanism comprises a mounting seat, a guide rail is longitudinally arranged on the mounting seat, a slide seat is provided on the guide rail, a driver is longitudinally arranged at the rear end of the mounting seat, the driver is connected to the slide seat, a fixed frame is provided on the slide seat, a die is provided at the front end of the fixed frame, and the punch cooperates with the die and the rear mold to perform cold pressing forming on the aluminum profile.

[0008] A measuring and positioning mechanism is provided on one side of the workbench, and the measuring and positioning mechanism includes a transversely arranged crossbeam, a guide slide groove is transversely arranged on the crossbeam, a guide slide groove is provided on the guide slide, a locking nut is provided on the guide slide, and the locking nut locks the guide slide on the crossbeam, a positioning shaft is longitudinally arranged on the guide slide, the positioning shaft is arranged on the guide slide by a threaded connection, and the longitudinal position of the positioning shaft is adjustable, and a scale is transversely arranged on the crossbeam.

[0009] Two guide sliding blocks are respectively arranged on the guide sliding groove.

[0010] The crossbeam is made of industrial aluminum profiles.

[0011] Two bearings are vertically spaced apart on the fixed block, and the rotating shaft is rotatably arranged on the bearings.

[0012] The rear mold is designed to be cylindrical, a boss is provided at the lower end of the rear mold, a mounting hole is provided at the center of the rear mold, and the rear mold is fixed on a rotating shaft.

[0013] The punch comprises a support seat, a circular arc protrusion is arranged at the front end of the support seat, and mold pressure covers are arranged at the upper and lower ends of the circular arc protrusion respectively.

[0014] The die comprises a base, and a circular arc groove is arranged at the front end of the base.

[0015] The driver adopts a gas-liquid damping cylinder, which includes a gas cylinder longitudinally arranged at the rear end of the mounting seat, and the gas cylinder is connected to an oil cylinder.

[0016] The utility model adopts the above structure, which can bring the following beneficial effects:

[0017] By designing two rear dies, a concave die mechanism and a punch mechanism, small-radius arc processing of aluminum profiles can be achieved through cold extrusion, which can meet the processing requirements of small-radius arcs of aluminum profiles, and the cold extrusion forming efficiency and precision are high. Description of the drawings:

[0018] Figure 1 This is a schematic diagram of the structure of a small radius arc cold bending machine of the utility model;

[0019] Figure 2 It is a top view of the small radius arc cold bending machine of the utility model;

[0020] Figure 3 for Figure 2 AA section view in the figure;

[0021] Figure 4 for Figure 2 Enlarged view of part A in the middle;

[0022] Figure 5 This is a schematic diagram of the structure of the rear side of the small radius arc cold bending machine of the utility model;

[0023] Figure 6 It is a structural schematic diagram of the punch of the utility model;

[0024] Figure 7 It is a structural schematic diagram of the concave mold of the utility model;

[0025] Figure 8 This is a schematic diagram of the structure of the aluminum profile after arc processing;

[0026] In the figure, 1, workbench, 2, mounting groove, 3, fixing block, 4, rotating shaft, 5, rear mold, 6, punch mechanism, 601, slide groove, 602, slider, 603, punch, 6031, support seat, 6032, arc protrusion, 6033, mold cover, 604, nut, 605, lead screw, 606, reducer, 607, servo motor, 7, die mechanism, 701, mounting seat, 702, guide Rail, 703, slide, 704, drive, 705, fixed frame, 706, die, 7061, base, 7062, arc groove, 8, measuring and positioning mechanism, 801, crossbeam, 802, guide slide groove, 803, guide slider, 804, locking nut, 805, positioning shaft, 806, scale, 9, bearing, 10, boss, 11, mounting hole, 12, aluminum profile, 13, arc. Specific implementation method:

[0027] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in the form of examples in conjunction with the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0029] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0030] In addition, the terms "upper", "lower", "A", "B", "front", "rear", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the position of the indicated technical features.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "provided with", "set", "connected" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] like Figure 1-8As shown, a small radius arc cold bending machine comprises a workbench 1, wherein two mounting grooves 2 are arranged horizontally at intervals on the workbench 1, a fixing block 3 is arranged on the mounting groove 2, a rotating shaft 4 is arranged vertically on the fixing block 3, a rear die 5 is arranged at the upper end of the rotating shaft 4, the spacing between the two rear dies 5 is adjustable, a punch mechanism 6 and a die mechanism 7 are arranged longitudinally at intervals between the two rear dies 5, the punch mechanism 6 comprises a slide groove 601 longitudinally arranged on the workbench 1, a slider 602 is arranged on the slide groove 601, a punch 603 is arranged at the upper end of the slider 602, a nut 604 is arranged longitudinally on the slider 602, a lead screw 605 is arranged on the nut 604, and the workbench A reducer 606 is provided at the front end, the lead screw 605 is installed on the reducer 606, a servo motor 607 is provided at the input end of the reducer 606, the die mechanism 7 comprises a mounting seat 701 arranged on the workbench 1, a guide rail 702 is longitudinally provided on the mounting seat 701, a slide 703 is provided on the guide rail 702, a driver 704 is longitudinally provided at the rear end of the mounting seat 701, the driver 704 is connected to the slide 703, a fixing frame 705 is provided on the slide 703, a die 706 is provided at the front end of the fixing frame 705, and the convex die 603 cooperates with the die 706 and the rear die 5 to perform cold pressing forming on the aluminum profile. By designing two rear dies 5, the die mechanism 6 and the convex die mechanism 7, the aluminum profile 12 is processed with a small radius arc by cold extrusion, which can meet the processing requirements of the small radius arc of the aluminum profile 12, and the cold extrusion forming efficiency and precision are high. The specific shapes of the punch 603 and the die 706 in the present application are determined according to the specific size of the processed arc 13.

[0033] A measuring and positioning mechanism 8 is provided on one side of the workbench 1. The measuring and positioning mechanism 8 includes a transversely arranged crossbeam 801, a guide slot 802 is transversely arranged on the crossbeam 801, a guide slide 803 is arranged on the guide slot 802, a locking nut 804 is arranged on the guide slide 803, and the locking nut 804 locks the guide slide 803 on the crossbeam 801. A positioning shaft 805 is longitudinally arranged on the guide slide 803, and the positioning shaft 805 is arranged on the guide slide 803 through a threaded connection, and the longitudinal position of the positioning shaft 805 is adjustable, and a scale 806 is transversely arranged on the crossbeam 801. The position of the arc 13 to be processed on the aluminum profile 12 can be quickly measured, and then the positioning shaft 805 is used for accurate positioning. During processing, it is only necessary to place the end of the aluminum profile 12 against the positioning shaft 805, which is not only accurate in measurement and positioning, but also very convenient to operate.

[0034] Two guide slide blocks 803 are respectively arranged on the guide slot 802. Designing two guide slide blocks 803 can realize positioning of the two arcs 13 on the aluminum profile 12. Of course, three guide slide blocks 803 or four guide slide blocks 804 can also be arranged according to actual needs.

[0035] The crossbeam 801 is made of industrial aluminum profiles, which have the advantages of mature technology, low cost and high structural strength. At the same time, the industrial aluminum profiles are provided with guide grooves 802, and no secondary processing is required.

[0036] Two bearings 9 are vertically spaced apart on the fixed block 3, and the rotating shaft 4 is rotatably arranged on the bearings 9 to achieve a rotating connection.

[0037] The rear mold 5 is designed to be cylindrical, a boss 10 is provided at the lower end of the rear mold 5, a mounting hole 11 is provided at the center of the rear mold 5, and the rear mold 5 is fixed on the rotating shaft 4. The design of the boss 10 mainly plays the role of positioning and supporting the lower end of the aluminum profile 12.

[0038] The male mold 603 includes a support seat 6031 , a circular arc protrusion 6032 is disposed at the front end of the support seat 6031 , and mold pressing covers 6033 are disposed at the upper and lower ends of the circular arc protrusion 6032 .

[0039] The female mold 706 includes a base 7061 , and a circular arc groove 7062 is formed at the front end of the base 7061 .

[0040] The driver 704 adopts a gas-liquid damping cylinder, including a cylinder 707 longitudinally arranged at the rear end of the mounting seat 701, and the cylinder 707 is connected to an oil cylinder 708. The main purpose is to achieve uniform speed retreat, which helps to improve the arc 13 forming efficiency and quality of the aluminum profile 12.

[0041] Instructions for use of the small radius arc cold bending machine in this application:

[0042] Take the processing of an arc 13 on an aluminum profile 12 as an example for explanation. Before use, according to the design requirements of the arc 13 on the aluminum profile 12, the male mold 603 and the female mold 706 are customized, the distance between the two rear molds 5 is adjusted, and the position of the guide slider 803 is adjusted and locked. In order to show how to position, assuming that the distance from the processing position of the arc 13 on the aluminum profile 12 to its end is L, the position of the guide slider 803 needs to be adjusted so that the distance to the middle of the two rear molds 5 is also L. During processing, the aluminum profile 12 is installed on the rear mold 5, and its end is against the positioning shaft 805, and then the gas-liquid damper and the servo motor 607 are started. The servo motor 607 drives the punch 603 to move backward through the reducer 606 and the screw drive (at this time, the die 706 is also in contact with the rear end of the aluminum profile 12 under the action of the gas-liquid damper and provides a certain support force, but the force of the punch 603 is greater than the support force of the die 706, and then the aluminum profile 12 is extruded as a whole). During the cold press forming process, the punch 603 first makes line contact with the aluminum profile 12, and then gradually forms surface contact with the feed, and finally extrudes into an arc shape. Reset after the extrusion is completed.

[0043] The above-mentioned specific implementation manner cannot be used as a limitation on the protection scope of the present utility model. For those skilled in the art, any replacement, improvement or change made to the implementation manner of the present utility model falls within the protection scope of the present utility model.

[0044] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. Small radius arc cold bending machine, characterized by: The invention comprises a workbench, wherein two mounting grooves are arranged horizontally at intervals, a fixing block is arranged on the mounting groove, a rotating shaft is arranged vertically on the fixing block, a rear mold is arranged on the upper end of the rotating shaft, a punch mechanism and a die mechanism are arranged longitudinally at intervals between the two rear molds, the punch mechanism comprises a slide groove longitudinally arranged on the workbench, a slider is arranged on the slide groove, a punch is arranged on the upper end of the slider, a nut is longitudinally arranged on the slider, a lead screw is arranged on the nut, a reducer is arranged at the front end of the workbench, the lead screw is installed on the reducer, a servo motor is arranged at the input end of the reducer, the die mechanism comprises a mounting seat, a guide rail is longitudinally arranged on the mounting seat, a slide seat is arranged on the guide rail, a driver is longitudinally arranged at the rear end of the mounting seat, the driver is connected to the slide seat, a fixing frame is arranged on the slide seat, a die is arranged at the front end of the fixing frame, and the punch cooperates with the die and the rear mold to perform cold pressing on the aluminum profile.

2. The small radius arc cold bending machine according to claim 1, characterized in that: A measuring and positioning mechanism is provided on one side of the workbench, and the measuring and positioning mechanism includes a transversely arranged crossbeam, a guide slide groove is transversely arranged on the crossbeam, a guide slide groove is provided on the guide slide, a locking nut is provided on the guide slide, and the locking nut locks the guide slide on the crossbeam, a positioning shaft is longitudinally arranged on the guide slide, the positioning shaft is arranged on the guide slide by a threaded connection, and the longitudinal position of the positioning shaft is adjustable, and a scale is transversely arranged on the crossbeam.

3. The small radius arc cold bending machine according to claim 2, characterized in that: Two guide sliding blocks are respectively arranged on the guide sliding groove.

4. The small radius arc cold bending machine according to claim 3, characterized in that: The crossbeam is made of industrial aluminum profiles.

5. The small radius arc cold bending machine according to claim 1 or 4, characterized in that: Two bearings are vertically spaced apart on the fixed block, and the rotating shaft is rotatably arranged on the bearings.

6. The small radius arc cold bending machine according to claim 5, characterized in that: The rear mold is designed to be cylindrical, a boss is provided at the lower end of the rear mold, a mounting hole is provided at the center of the rear mold, and the rear mold is fixed on a rotating shaft.

7. The small radius arc cold bending machine according to claim 6, characterized in that: The punch comprises a support seat, a circular arc protrusion is arranged at the front end of the support seat, and mold pressure covers are arranged at the upper and lower ends of the circular arc protrusion respectively.

8. The small radius arc cold bending machine according to claim 7, characterized in that: The die comprises a base, and a circular arc groove is arranged at the front end of the base.

9. The small radius arc cold bending machine according to claim 8, characterized in that: The driver adopts a gas-liquid damping cylinder, which includes a gas cylinder longitudinally arranged at the rear end of the mounting seat, and the gas cylinder is connected to an oil cylinder.

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