A device capable of processing multiple irregular tubular parts at the same time

Abstract

The present invention discloses a device capable of processing a plurality of irregular tubular parts at the same time, comprising a first positioning die, a second positioning die, a rotating die, a stepped shaft, a first backing die, a second backing die, and first to fourth bearings; the first backing die and the second backing die are both cylinders provided with through holes, and are respectively arranged on both sides of the stepped shaft through the first to fourth bearings; the first positioning die, the second positioning die, and the rotating die are all in annular shape, comprising 2N first die blocks, 4+2M second die blocks, 2 third die blocks, 3+M pairs of locking washers, 6+2M bolts, and 2+M+2N square keys. The present invention can process a plurality of tubular parts at the same time, and a backing die can be added for auxiliary forming in different shapes and sizes, so that a plurality of tubular parts can be processed at the same time, which saves processing time, reduces die cost, and improves production efficiency.

Description

Technical Field

[0001] The invention relates to the field of mold design, in particular to a device capable of processing multiple irregular tubular parts at the same time. Background Art

[0002] Tubular parts are widely used in various aspects of modern life. Different fields have different requirements for the shape, size, etc. of tubular parts. Therefore, tubular parts need to be processed to obtain parts of the expected shape and size. Among them, bending and forming of tubular parts is a forming method used in almost all industries.

[0003] Bending is a processing method that uses molds and presses to bend various metal blanks into parts with certain angles, curvatures and shapes. In the existing mold structure for processing tubular parts, it takes multiple steps to process the blanks into parts with the desired shape. Multiple molds are required to achieve the desired effect. In addition, the forming dimensions of the bending mold are fixed. Some tubular parts with complex shapes can only be processed one at a time. For parts of the same material, they can only be bent into fixed shapes and dimensions. Once the design dimensions of the parts change, a new mold needs to be designed and manufactured. This increases the cost of the production mold and reduces the processing efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a device that can process multiple irregular tubular parts at the same time in order to solve the defects mentioned in the background technology.

[0005] The present invention adopts the following technical solutions to solve the above technical problems:

[0006] A device capable of simultaneously processing a plurality of irregular tubular parts comprises a first positioning die, a second positioning die, a rotating die, a stepped shaft, a first backing die, a second backing die, and first to fourth bearings;

[0007] The stepped shaft comprises a shaft and a step arranged on the shaft, wherein the step is provided with two limiting grooves symmetrical about its axis;

[0008] The first and second paterns are both cylindrical, and are provided with through holes along their axes for the shaft of the stepped shaft to pass through; the first and second paterns are respectively arranged on both sides of the step of the stepped shaft, wherein the first patern is connected to the shaft of the step via a first bearing and a second bearing at both ends of its through hole, and the second patern is connected to the shaft of the step via a third bearing and a fourth bearing at both ends of its through hole; the first and second paterns are each provided with two limiting grooves symmetrical about their axes;

[0009] The first positioning mold, the second positioning mold, and the rotating mold are all annular, and include 2N first mold blocks, 4+2M second mold blocks, 2 third mold blocks, 3+M pairs of locking washers, 6+2M bolts, and 2+M+2N square keys, where N and M are both natural numbers greater than or equal to 0;

[0010] The first mold block, the second mold block, and the third mold block are in the shape of sectors with equal inner and outer diameters and equal central angles, and each comprises an inner arc surface, an outer arc surface, a first side surface, a second side surface, a first end surface, and a second end surface;

[0011] The first mold block is provided with a semi-guide hole that passes through the first end face and the second end face and has its center on the first side face and the second side face respectively. The apertures of the two semi-guide holes on the first mold block are both a preset first length threshold, and the distances to their inner arc surfaces are both a preset first distance threshold. The first side face and the second side face of the first mold block are respectively provided with a keyway for mating with the square key. The distances from the two keyways on the first mold block to their inner arc surfaces are both a preset second distance threshold.

[0012] The second mold block is provided with a threaded hole passing through the first end face and the second end face, the distance from the threaded hole to the inner arc surface thereof being a preset third distance threshold, and the distance from the threaded hole to the first side face thereof being a preset fourth distance threshold; the second mold block is further provided with a semi-guide hole passing through the first end face and the second end face and having its center on the second side face, the aperture of the semi-guide hole on the second mold block being a preset first length threshold, and the distance from the inner arc surface thereof being a preset first distance threshold; the second side face of the second mold block is provided with a keyway for mating with the square key, and the distance from the keyway on the second mold block to the inner arc surface thereof being a preset second distance threshold;

[0013] The third mold block is provided with two threaded holes penetrating the first end face and the second end face, the distances between the two threads on the third mold block and the inner arc surface thereof are both a preset third distance threshold, the distance between the threaded hole close to the first side face and the first side face is a preset fourth distance threshold, and the distance between the threaded hole close to the second side face and the second side face is a preset fourth distance threshold; a limit key is provided on the inner arc surface of the third mold block;

[0014] The locking washers are provided with two threaded holes, and a pair of locking washers are used to cooperate with two bolts to lock the third mold block and the adjacent second mold block, or the second mold block and the adjacent second mold block;

[0015] The second mold block is used to connect with the first mold block and the third mold block; when the second mold block is connected to the first mold block, the second side surface of the second mold block is aligned with the first side surface or the second side surface of the first mold block and is connected by a square key, and the semi-guide hole on the second side surface of the second mold block and the semi-guide hole on the first side surface or the second side surface of the first mold block form a complete guide hole for defining the tubular part to be processed; when the second mold block is connected to the third mold block, the first side surface of the second mold block is aligned with the first side surface or the second side surface of the third mold block and is fixed by a pair of locking washers and two bolts;

[0016] The first mold block can be connected to the second mold block by a square key, and the semi-guide holes on the sides thereof are fitted together to form a complete guide hole for defining the tubular part to be processed;

[0017] In the first positioning mold, the second positioning mold, and the rotating mold, two third mold blocks are symmetrically arranged, and each mold block is sequentially connected to form a ring;

[0018] The limiting keys of the two third mold blocks of the rotating mold respectively cooperate with the two limiting grooves on the step of the stepped shaft, so that the rotating mold is fixed on the step of the stepped shaft;

[0019] The limiting keys of the two third mold blocks of the first positioning mold respectively cooperate with the two limiting grooves on the first supporting mold, so that the rotating mold is fixed on the first supporting mold;

[0020] The limiting keys of the two third mold blocks of the second positioning mold respectively cooperate with the two limiting grooves on the second backing mold, so that the rotating mold is fixed on the second backing mold;

[0021] The first backing mold and the second backing mold are respectively fixedly connected to the outside world.

[0022] As a further optimization solution of the device of the present invention that can simultaneously process multiple irregular tubular parts, the semi-guide holes on the second mold block and the third mold block are both provided with chamfers.

[0023] Compared with the prior art, the present invention adopts the above technical solution and has the following technical effects:

[0024] The mold is assembled from mold blocks, making it convenient for production and easy to replace in the event of partial mold damage. The mold assembly and disassembly structure facilitates the insertion and removal of tubular parts. The mold supports the processing of parts of varying shapes and sizes. The annular mold allows for simultaneous processing of multiple tubular parts, improving processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the first positioning mold in the present invention.

[0026] Figure 2 This is a schematic structural diagram of the first mold block in the present invention;

[0027] Figure 3 This is a schematic structural diagram of the second mold block in the present invention;

[0028] Figure 4 This is a schematic structural diagram of the third mold block in the present invention;

[0029] Figure 5 This is a schematic diagram of the guide hole structure with chamfers after the mold blocks are assembled in the present invention;

[0030] Figure 6 It is a schematic structural diagram of the stepped shaft in the present invention;

[0031] Figure 7 It is a structural schematic diagram of the present invention;

[0032] Figure 8 This is a schematic diagram of the use of the mold of the present invention in processing;

[0033] In the figure, 1-first mold block, 2-second mold block, 3-third mold block, 4-keyway, 5-limit key, 6-limiting groove on the step of the stepped shaft, 7-limiting groove on the first backing mold, 8-first backing mold. DETAILED DESCRIPTION

[0034] The technical solution of the present invention is further described in detail below with reference to the accompanying drawings:

[0035] The present invention can be implemented in many different forms and should not be considered to be limited to the embodiments described herein. On the contrary, these embodiments are provided to make this disclosure thorough and complete and will fully convey the scope of the invention to those skilled in the art. In the accompanying drawings, components are enlarged for clarity.

[0036] like Figure 1 As shown, the present invention discloses a device for simultaneously processing multiple irregular tubular parts, comprising a first positioning die, a second positioning die, a rotating die, a stepped shaft, a first backing die, a second backing die, and first to fourth bearings;

[0037] like Figure 6 As shown, the stepped shaft comprises a shaft and a step arranged on the shaft, and the step is provided with two limiting grooves symmetrical about its axis;

[0038] like Figure 7As shown, the first and second paterns are both cylindrical, and are provided with through holes along their axes for the shaft of the stepped shaft to pass through; the first and second paterns are respectively arranged on both sides of the step of the stepped shaft, wherein the first patern is connected to the shaft of the step through a first bearing and a second bearing at both ends of its through hole, and the second patern is connected to the shaft of the step through a third bearing and a fourth bearing at both ends of its through hole; the first and second paterns are each provided with two limiting grooves symmetrical about their axes;

[0039] The first positioning mold, the second positioning mold, and the rotating mold are all annular, and include 2N first mold blocks, 4+2M second mold blocks, 2 third mold blocks, 3+M pairs of locking washers, 6+2M bolts, and 2+M+2N square keys, where N and M are both natural numbers greater than or equal to 0;

[0040] The first mold block, the second mold block, and the third mold block are in the shape of sectors with equal inner and outer diameters and equal central angles, and each comprises an inner arc surface, an outer arc surface, a first side surface, a second side surface, a first end surface, and a second end surface;

[0041] like Figure 2 As shown, the first mold block is provided with a semi-guide hole that passes through the first end face and the second end face and has its center on the first side face and the second side face respectively. The apertures of the two semi-guide holes on the first mold block are both a preset first length threshold, and the distances to their inner arc surfaces are both a preset first distance threshold. The first side face and the second side face of the first mold block are respectively provided with a keyway for mating with the square key, and the distances from the two keyways on the first mold block to their inner arc surfaces are both a preset second distance threshold.

[0042] like Figure 3 As shown, the second mold block is provided with a threaded hole passing through the first end face and the second end face, the distance between the threaded hole and the inner arc surface thereof is a preset third distance threshold, and the distance between the threaded hole and the first side face thereof is a preset fourth distance threshold; the second mold block is further provided with a semi-guide hole passing through the first end face and the second end face and with its center on the second side face, the aperture of the semi-guide hole on the second mold block is a preset first length threshold, and the distance between the semi-guide hole and the inner arc surface thereof is a preset first distance threshold; the second side face of the second mold block is provided with a keyway for mating with the square key, and the distance between the keyway on the second mold block and the inner arc surface thereof is a preset second distance threshold;

[0043] like Figure 4As shown, the third mold block is provided with two threaded holes penetrating the first end face and the second end face, the distances between the two threads on the third mold block and the inner arc surface thereof are both a preset third distance threshold, the distance between the threaded hole close to the first side face and the first side face is a preset fourth distance threshold, and the distance between the threaded hole close to the second side face and the second side face is a preset fourth distance threshold; a limit key is provided on the inner arc surface of the third mold block;

[0044] The locking washers are provided with two threaded holes, and a pair of locking washers are used to cooperate with two bolts to lock the third mold block and the adjacent second mold block, or the second mold block and the adjacent second mold block;

[0045] The second mold block is used to connect with the first mold block and the third mold block; when the second mold block is connected to the first mold block, the second side surface of the second mold block is in contact with the first side surface or the second side surface of the first mold block and is connected by a square key, and the semi-guide hole on the second side surface of the second mold block and the semi-guide hole on the first side surface or the second side surface of the first mold block form a complete guide hole for defining the tubular part to be processed, such as Figure 5 As shown; when the second mold block and the third mold block are connected, the first side of the second mold block and the first side or the second side of the third mold block are fitted together and fixed by a pair of locking washers and two bolts;

[0046] The first mold block can be connected to the second mold block by a square key, and the semi-guide holes on the sides thereof are fitted together to form a complete guide hole for defining the tubular part to be processed;

[0047] In the first positioning mold, the second positioning mold, and the rotating mold, two third mold blocks are symmetrically arranged, and each mold block is sequentially connected to form a ring;

[0048] like Figure 7 As shown, the limiting keys of the two third mold blocks of the rotating mold respectively cooperate with the two limiting grooves on the step of the stepped shaft, so that the rotating mold is fixed on the step of the stepped shaft;

[0049] The limiting keys of the two third mold blocks of the first positioning mold respectively cooperate with the two limiting grooves on the first supporting mold, so that the rotating mold is fixed on the first supporting mold;

[0050] The limiting keys of the two third mold blocks of the second positioning mold respectively cooperate with the two limiting grooves on the second backing mold, so that the rotating mold is fixed on the second backing mold;

[0051] The first backing mold and the second backing mold are respectively fixedly connected to the outside world.

[0052] The semi-guide holes on the second mold block and the third mold block are both provided with chamfers.

[0053] The actual process of the present invention can process up to 14 round tubes at the same time. Taking one tube as an example, the round tube blank to be processed is a thin-walled straight tube with an outer diameter of 10 mm, a thickness of 1.2 mm, and a length of 735 mm. The side view is a quarter arc with an arc radius of 66 mm.

[0054] The first mold block is 10mm wide, with a 160mm diameter arc at its larger end and an 80mm diameter arc at its smaller end, forming a 20° angle between the two sides. Two semi-guide holes with chamfered ends are located on the sides of the first mold block, with the central axis aligned with the plane of the side. The semi-guide holes have a diameter of 10.3mm. To allow for machining clearance, the holes are slightly larger than the outer diameter of the tubing in actual engineering. The chamfer radius of the chamfered ends is 2mm, restricting the radial and circumferential freedom of the tubular part. A flat keyway, 6mm long, 4mm wide, and 3mm deep, is also located on each side of the first mold block for connection to the second mold block.

[0055] The second mold block is 10mm wide, with a 160mm diameter arc at its larger end and an 80mm diameter arc at its smaller end, forming a 20° angle between the two sides. One side of the second mold block features a semi-guide hole with chamfered ends, with the center axis aligned with the plane of the side. The semi-guide hole has a diameter of 10.3mm. To allow for machining clearance, the hole is slightly larger than the outer diameter of the tubing in actual engineering. The chamfer radius of the chamfered ends is 2mm, restricting the radial and circumferential freedom of the tubular part. A flat keyway, 6mm long, 4mm wide, and 3mm deep, is also located on the same side, connecting it to the first mold block. Near the other side of the second mold block, an M6 threaded through-hole is attached to the third mold block via a locking washer and bolts.

[0056] The third mold block is 10mm wide, with its large end being an arc with a diameter of 160mm and its small end being an arc with a diameter of 80mm, and the two side surfaces forming an angle of 20°; both side surfaces of the third mold block are smooth, adjacent to the second mold block, and used as a component to fix the first mold block and the second mold block, with two M6 threaded through holes on it, connected to the second mold block by locking washers and bolts; the inner arc surface has a limit key, which is 5mm high, 6mm long and 6mm wide, and is assembled and connected to the corresponding position of the shaft or mold to fix the entire mold on the shaft or mold.

[0057] The first and second prototypes, such as Figure 7 As shown, it is a cylindrical structure with an outer surface diameter of 80mm. There are two grooves with a length of 6mm, a width of 6mm, and a depth of 5mm, which are symmetrically distributed about the axis and cooperate with the limit keys on the inner arc surface of the third mold block.

[0058] Assemble the first and second molds on the shaft, and press the three mold blocks together. Figure 1The structure shown is arranged and assembled on the axis in the order of first mold block - tube blank - first mold block - tube blank - ... - tube blank - second mold block - third mold block - second mold block - tube blank - first mold block - ..., as shown in FIG. Figure 7 、 Figure 8 As shown; among them, one of the two third mold blocks is left to be placed last, and the placement method is insertion. After placement, the third mold block is fixedly connected to the second mold block through threaded holes, locking washers and bolts.

[0059] The bearings used in this example are deep groove ball bearings, and there are four of them.

[0060] The two end mold bodies are fixed and the middle mold body is controlled by the motor to rotate, driving the tubular part blank to undergo plastic deformation and forming. The process is as follows Figure 8 A specific example is as follows: a stepped shaft is connected to a servo motor through a coupling and a reducer. The servo motor's speed and angle of rotation are controlled, and the molds at both ends are fixed. The stepped shaft drives the middle mold to rotate 90° at a speed of 5 r / s and then stops. As the middle mold rotates, the tubular part blank undergoes plastic deformation and is formed.

[0061] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art in the art to which this invention belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with their meanings in the context of the prior art and, unless defined as such, will not be interpreted in an idealized or overly formal sense.

[0062] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device capable of processing a plurality of irregular tubular parts simultaneously, characterized in that: It includes a first positioning mold, a second positioning mold, a rotating mold, a stepped shaft, a first backing mold, a second backing mold, and first to fourth bearings; The stepped shaft comprises a shaft and a step arranged on the shaft, wherein the step is provided with two limiting grooves symmetrical about its axis; The first and second paterns are both cylindrical, and are provided with through holes along their axes for the shaft of the stepped shaft to pass through; the first and second paterns are respectively arranged on both sides of the step of the stepped shaft, wherein the first patern is connected to the stepped shaft via a first bearing and a second bearing at both ends of its through hole, and the second patern is connected to the stepped shaft via a third bearing and a fourth bearing at both ends of its through hole; the first and second paterns are each provided with two limit grooves symmetrical about their axes; The first positioning mold, the second positioning mold, and the rotating mold are all in a circular ring shape, and include 2N first mold blocks, 4+2M second mold blocks, 2 third mold blocks, 3+M pairs of locking washers, 6+2M bolts, and 2+M+2N square keys, where N and M are both natural numbers greater than or equal to 0; The first mold block, the second mold block, and the third mold block are in the shape of sectors with equal inner and outer diameters and equal central angles, and each comprises an inner arc surface, an outer arc surface, a first side surface, a second side surface, a first end surface, and a second end surface; The first mold block is provided with a semi-guide hole penetrating the first end face and the second end face and having its center on the first side face and the second side face respectively, the apertures of the two semi-guide holes on the first mold block are both the preset first length threshold, and the distances to the inner arc surface thereof are both the preset first distance threshold; the first side face and the second side face of the first mold block are respectively provided with a keyway for cooperating with the square key, and the distances from the two keyways on the first mold block to the inner arc surface thereof are both the preset second distance threshold; The second mold block is provided with a threaded hole penetrating the first end face and the second end face, the distance from the threaded hole to the inner arc surface is a preset third distance threshold, and the distance from the threaded hole to the first side surface is a preset fourth distance threshold; the second mold block is also provided with a semi-guide hole penetrating the first end face and the second end face and with the center on the second side surface, the aperture of the semi-guide hole on the second mold block is a preset first length threshold, and the distance from the inner arc surface is a preset first distance threshold; the second side surface of the second mold block is provided with a keyway for matching with the square key, and the distance from the keyway on the second mold block to the inner arc surface is a preset second distance threshold; The third mold block is provided with two threaded holes penetrating the first end face and the second end face, the distances from the two threaded holes on the third mold block to the inner arc surface thereof are both preset third distance thresholds, the distance from the threaded hole close to the first side surface to the first side surface is a preset fourth distance threshold, and the distance from the threaded hole close to the second side surface to the second side surface is a preset fourth distance threshold; a limit key is provided on the inner arc surface of the third mold block; The locking gasket is provided with two threaded holes, and a pair of locking gaskets are used to cooperate with two bolts to lock the third mold block and the adjacent second mold block, or the second mold block and the adjacent second mold block; The second mold block is used to connect with the first mold block and the third mold block; when the second mold block is connected with the first mold block, the second side surface of the second mold block is matched with the first side surface or the second side surface of the first mold block and connected by a square key, and the semi-guide hole on the second side surface of the second mold block and the semi-guide hole on the first side surface or the second side surface of the first mold block form a complete guide hole for defining the tubular part to be processed; when the second mold block is connected with the third mold block, the first side surface of the second mold block is matched with the first side surface or the second side surface of the third mold block and fixed by a pair of locking washers and two bolts; The first mold block can be connected to the second mold block by a square key, and the semi-guide holes on the sides thereof are fitted to form a complete guide hole for defining the tubular part to be processed; In the first positioning mold, the second positioning mold, and the rotating mold, two third mold blocks are symmetrically arranged, and each mold block is sequentially connected to form a ring; The limit keys of the two third mold blocks of the rotating mold respectively cooperate with the two limit grooves on the step of the step shaft, so that the rotating mold is fixed on the step of the step shaft; The limiting keys of the two third mold blocks of the first positioning mold are respectively matched with the two limiting grooves on the first supporting mold, so that the rotating mold is fixed on the first supporting mold; The limiting keys of the two third mold blocks of the second positioning mold are respectively matched with the two limiting grooves on the second master mold, so that the rotating mold is fixed on the second master mold; The first prototype and the second prototype are respectively fixedly connected to the outside.

2. The device for processing a plurality of irregular tubular parts at the same time according to claim 1, characterized in that: The semi-guide holes on the second mold block and the third mold block are both provided with chamfers.

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