Thin-wall furnace tube machining die

Abstract

A thin-wall furnace tube machining die belongs to the technical field of pipe machining and comprises a thin-wall furnace tube and a rotary table, and a plurality of supporting units are arranged on the rotary table and circumferentially arranged at equal intervals with the circle center of the rotary table as the axis. By arranging a plurality of groups of second supporting plates and first supporting plates which are close to each other, the thin-wall furnace tube can be circumferentially clamped and positioned, so that the inner side and the outer side of the thin-wall furnace tube can be supported in all directions in the circumferential direction, and the deformation of the thin-wall furnace tube caused by cutting stress or grinding stress in the subsequent machining process is avoided; the appearance quality and the finished product precision of thin-wall furnace tube machining are guaranteed, all supporting points of the thin-wall furnace tube in the circumferential direction can achieve cooperative positioning, the stable and accurate supporting and positioning effect is provided for the thin-wall furnace tube, the problems of positioning deviation and the like caused by desynchrony are solved, and the machining precision is improved. The linkage rod ensures that the movement of the second supporting plate and the first supporting plate has high synchronism, and no extra driving force needs to be provided for the second supporting plate.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of pipe processing, and particularly relates to a thin-wall furnace pipe processing die. BACKGROUND

[0002] Pipe materials can be seen everywhere in daily construction projects, among which, furnace pipes are one of the types of pipe materials and are key components widely used in industrial heating equipment (such as industrial furnaces, heating furnaces, cracking furnaces, etc.).

[0003] In the related art (announcement number CN221808895U), a pipe interface processing die is disclosed, which comprises a bottom plate, a support installed on the top of the bottom plate, and a cylinder placed on the top of the bottom plate. A pipe interface is formed on one side of the cylinder, and the connecting part of the pipe interface is pulled into an arc flange structure through a polishing mechanism installed inside the support. A fixing mechanism is installed inside the support to prevent the pipe from moving during processing. The fixing mechanism comprises a moving plate and two groups of fixing components installed on the bottom of the moving plate and located on both sides of the polishing mechanism. The fixing component comprises a fixing rod installed on the bottom of the moving plate. During use, the pipe interface can be processed into an arc flange interface, and the pipe can be connected to the flange interface and then welded. Because the welding surface is flat, the flat weld is easy to polish and can be treated without dead angles, meeting the requirements of sanitary grade.

[0004] In the classification of furnace pipes, according to the difference in use, thin-wall furnace pipes and thick-wall furnace pipes can be divided. Among them, thin-wall furnace pipes have the characteristic of small thickness, but under the current processing conditions, whether in the port cutting operation or in the port grinding production and processing link, there is a lack of effective support measures for the inner and outer walls of thin-wall furnace pipes. When cutting, the external force applied by the cutting tool will cause uneven stress distribution of the thin-wall furnace pipe. Due to the thin wall and lack of support, these stresses are extremely easy to cause the furnace pipe to deform in the radial direction, such as appearing ovalization phenomenon; for port grinding, the grinding force in the grinding process will also damage the original shape of the furnace pipe, and the thin-wall furnace pipe is easy to produce local depression or bending. This deformation not only affects the appearance quality of the furnace pipe, but also damages its geometric precision, affecting the final product quality of the thin-wall furnace pipe. SUMMARY

[0005] The utility model provides a kind of thin-walled furnace tube machining die, by setting multiple groups of mutually close second support plate and first support plate, the thin-walled furnace tube can be positioned by circumferential clamping, ensure that the circumferential of thin-walled furnace tube is supported all-round, avoid the deformation of thin-walled furnace tube caused by cutting stress or grinding stress in subsequent processing process, ensure the appearance quality and finished product precision of thin-walled furnace tube processing.

[0006] A kind of thin-walled furnace tube machining die, including thin-walled furnace tube, further including turntable, the turntable is provided with multiple groups of support unit, multiple groups of the support unit are equidistantly arranged with the turntable center as the shaft;

[0007] Each group of the support unit includes drive slot opened on the turntable, one end of mobile pin is slidably embedded in the drive slot inner cavity, the other end of the mobile pin is installed with first mobile rod, the end of the first mobile rod away from the mobile pin is installed with first support plate, the support unit further includes limiting frame, one end of the limiting frame is slidably penetrated with second mobile rod, the end of the second mobile rod close to the first support plate is installed with second support plate, and the first support plate and the second support plate are positionally and oppositely arranged, linkage rod is rotatably connected between the second support plate and the first support plate, and the linkage rod is rotatably connected with the limiting frame;

[0008] Wherein, the first mobile rod is slidably penetrated through the limiting frame.

[0009] In the above technical solution, the first support plate and the second support plate are both arranged as arc shape, and the arc of the first support plate and the second support plate is matched with the arc of the thin-walled furnace tube.

[0010] In the above technical solution, the limiting frame is fixedly installed with fixed plate, the rear wall of the turntable is fixedly installed with rotating shaft, and the rotating shaft penetrates through the fixed plate to the rear side, the rotating shaft is fixedly installed with worm gear, the rear wall of the fixed plate is installed with two mounting seats, the worm gear is rotatably connected between the two mounting seats, and the worm gear is meshingly connected with the side wall of the worm gear.

[0011] In the above technical solution, the rear wall of the fixed plate is fixedly installed with mounting plate, the rear side of the mounting plate is installed with vertical plate, and the bottom end of the vertical plate is perpendicularly installed with bottom plate.

[0012] In the above technical solution, the bottom plate is provided with the supporting assembly of the thin-walled furnace tube.

[0013] The supporting assembly comprises a base mounted on the bottom plate, two rotating rods symmetrically arranged at the top end of the base, and a roller arranged on each rotating rod.

[0014] In the technical scheme, the limiting frame is in U shape.

[0015] In the technical scheme, the arc length of each first supporting plate is N, and the arc length of the thin-wall furnace tube is M, wherein N < 0.25M.

[0016] In the technical scheme, the second moving rod is collinear with the extension line of the first moving rod.

[0017] Compared with the prior art, the thin-wall furnace tube machining die has the beneficial effects that:

[0018] I. Due to the lack of effective supporting measures for the inner and outer walls of the thin-wall furnace tube, the thin-wall furnace tube is prone to deformation during the machining process, which not only affects the appearance quality of the furnace tube, but also damages the geometric precision and affects the final product quality of the thin-wall furnace tube. The present application sets multiple groups of second supporting plates and first supporting plates close to each other, which can clamp and position the thin-wall furnace tube in the circumferential direction, ensure that the circumferential direction of the thin-wall furnace tube is supported in all directions, avoid deformation of the thin-wall furnace tube caused by cutting stress or grinding stress in the subsequent machining process, and ensure the appearance quality and product precision of the thin-wall furnace tube machining.

[0019] II. The rotation of the turntable can drive the synchronous relative movement of the four groups of first supporting plates and second supporting plates, realize the movement of the four groups of first supporting plates and second supporting plates, realize the synchronous support and positioning of the thin-wall furnace tube in the circumferential direction, ensure the cooperative positioning of each support point in the circumferential direction of the thin-wall furnace tube, provide stable and accurate support and positioning effect for the thin-wall furnace tube, avoid positioning deviation caused by asynchronization, and effectively improve the accuracy and reliability of the support and positioning.

[0020] III. The fixing plate can provide connection and support for the four groups of limiting frames, the shaft, worm, mounting seat and worm can realize the rotation of the turntable or the locking after rotation, thereby ensuring the stability of the four groups of second supporting plates and first supporting plates after supporting and positioning the thin-wall furnace tube, and ensuring that the second supporting plates and first supporting plates continuously play a supporting role on the thin-wall furnace tube in the subsequent machining process.

[0021] The utility model discloses a linkage rod can realize the synchronous linkage effect of second support plate and first support plate, namely when the first support plate produces the movement, can drive second support plate synchronous movement in the direction corresponding with it, thereby ensuring that the movement of second support plate and first support plate has the high synchronism, in this process, need not to provide the driving force for second support plate additionally, not only simplifies the complexity of drive system, and effectively guarantees the cooperation and precision of second support plate and first support plate movement, provides the powerful guarantee for the stable operation of whole device;

[0022] Five, in the utility model, enough space is left between two first support plates, ensure that each first support plate gradually far away from the process of moving to the middle of thin-walled furnace tube inner wall will not interfere with each other, leave enough space for the action of each first support plate to the middle of retraction;

[0023] Six, the utility model discloses a base, rotating rod, gyro wheel can be supported to the bottom end lateral wall of thin-walled furnace tube, provide the placement platform for the preliminary placement of thin-walled furnace tube;

[0024] In conclusion, the utility model discloses a plurality of second support plate and first support plate that are close to each other can be peripherally clamped and positioned to thin-walled furnace tube, ensure that the periphery of thin-walled furnace tube is supported all-round, avoid the deformation of thin-walled furnace tube caused by cutting stress or grinding stress in subsequent processing, ensure the appearance quality and finished product precision of thin-walled furnace tube processing, and each support point in the periphery direction of thin-walled furnace tube can realize cooperative positioning, provide stable and accurate support positioning effect for thin-walled furnace tube, avoid the positioning deviation caused by asynchronism and other problems, effectively improve the accuracy and reliability of support positioning, in addition, the movement of second support plate and first support plate has the high synchronism through linkage rod, need not to provide the driving force for second support plate additionally, not only simplifies the complexity of drive system, and effectively guarantees the cooperation and precision of second support plate and first support plate movement, provides the powerful guarantee for the stable operation of whole device. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the structure schematic diagram of the utility model turntable;

[0026] Figure 2 It is the structure schematic diagram of the utility model second support plate;

[0027] Figure 3 It is the rear view structure schematic diagram of the utility model vertical plate;

[0028] Figure 4 It is the rear view structure schematic diagram of the utility model mounting plate;

[0029] Figure 5It is a rear view structure schematic diagram of the worm of the utility model;

[0030] Figure 6 It is a rear view structure schematic diagram of the worm gear of the utility model;

[0031] Figure 7 It is a rear view structure schematic diagram of the driving groove of the utility model;

[0032] Figures 1 to 7 Among them, 1, rotating disc, 2, driving groove, 3, moving pin, 4, first moving rod, 5, first support plate, 6, limiting frame, 7, second moving rod, 8, second support plate, 9, linkage rod, 10, fixed plate, 11, rotating shaft, 12, worm gear, 13, mounting seat, 14, worm, 15, mounting plate, 16, bottom plate, 17, vertical plate, 18, base, 19, rotating rod, 20, roller, 21, thin-walled furnace tube. Specific implementation

[0033] The specific implementation cases and the accompanying drawings will be described below Figures 1 to 7 The utility model will be further described, but the utility model is not limited to these embodiments.

[0034] Referring to Figures 1 to 7 As shown in the figure, a thin-walled furnace tube machining die comprises a thin-walled furnace tube 21, further comprises a rotating disc 1, a plurality of support units are arranged on the rotating disc 1, the inner and outer sidewalls of the thin-walled furnace tube 21 are supported through the support units, it is guaranteed that all points of the thin-walled furnace tube 21 are supported in the circumferential direction, and the plurality of support units are arranged equidistantly in the circumferential direction with the center of the rotating disc 1 as the shaft. Figure 1 And Figure 6 As shown in the figure, each support unit comprises a driving groove 2 opened on the rotating disc 1, one end of a moving pin 3 is slidably embedded in the inner cavity of the driving groove 2, the other end of the moving pin 3 is provided with a first moving rod 4, the end of the first moving rod 4 away from the moving pin 3 is provided with a first support plate 5, the support unit further comprises a limiting frame 6, one end of the limiting frame 6 is slidably provided with a second moving rod 7, wherein the first moving rod 4 slides through the limiting frame 6, the movement direction of the first moving rod 4 and the second moving rod 7 is limited through the limiting frame 6, the end of the second moving rod 7 close to the first support plate 5 is provided with a second support plate 8, and the first support plate 5 and the second support plate 8 are arranged in position and correspond in the inner and outer sides, the second support plate 8 and the first support plate 5 are rotatably connected with a linkage rod 9 through a pin shaft, and the linkage rod 9 is rotatably connected with the limiting frame 6 through a bearing; the limiting frame 6 is arranged in a U shape, so that the movement of the first moving rod 4 and the second moving rod 7 can be limited through the limiting frame 6; the extension line of the second moving rod 7 is collinear with the first moving rod 4, that is, the second moving rod 7 and the first moving rod 4 are correspondingly arranged, the first moving rod 4 and the second moving rod 7 move along the same straight line, so that the first support plate 5 and the second support plate 8 move in the corresponding direction along the same straight line.

[0035] When the rotary disc 1 is forced to rotate, the moving pin 3 in the cavity of the driving groove 2 is moved along the driving groove 2 to move the first moving rod 4 along the limiting frame 6, so that the first moving rod 4 drives the first supporting plate 5 to gradually fit the inner side wall of the thin-walled furnace tube 21 to support and position the inner side wall of the thin-walled furnace tube 21. At the same time, the movement of the first supporting plate 5 drives the second supporting plate 8 to move through the driving linkage rod 9, so that the second supporting plate 8 gradually approaches and fits the outer side wall of the thin-walled furnace tube 21 to support and position the outer side wall of the thin-walled furnace tube 21. Thus, the first supporting plate 5 and the second supporting plate 8 are clamped and positioned on the inner and outer side walls of the thin-walled furnace tube 21, and the thin-walled furnace tube 21 is completely supported. Subsequent cutting or grinding processing along the edges positioned by the first supporting plate 5 and the second supporting plate 8 can avoid deformation of the thin-walled furnace tube 21 caused by cutting stress or grinding stress during processing.

[0036] Specifically, mainly referring to Figure 1 and Figure 5 , the first supporting plate 5 and the second supporting plate 8 are both arc-shaped, and the radii of the first supporting plate 5 and the second supporting plate 8 are adapted to the radius of the thin-walled furnace tube 21. Thus, when the first supporting plate 5 and the second supporting plate 8 fit the inner and outer side walls of the thin-walled furnace tube 21 respectively, they can completely fit the side walls of the thin-walled furnace tube 21 to achieve seamless fitting support of the side walls of the thin-walled furnace tube 21.

[0037] Mainly referring to Figure 4 , Figure 5 , the limiting frame 6 is fixedly installed with a fixed plate 10, which can connect the four limiting frames 6. The rotary disc 1 is fixedly installed with a rotary shaft 11 which penetrates the fixed plate 10 from the back side and is rotatably connected with the fixed plate 10 through a bearing. The rotary shaft 11 is fixedly installed with a worm gear 12. The fixed plate 10 is installed with two mounting seats 13 which are rotatably connected with a worm 14 which is meshed with the side wall of the worm gear 12.

[0038] The rotation of the worm 14 drives the synchronous rotation of the worm gear 12, the rotary shaft 11 and the rotary disc 1. The rotation of the rotary disc 1 drives the movement of the four moving pins 3 along the cavities of the corresponding driving grooves 2. The worm 14 and the worm gear 12 can stabilize the rotation of the rotary disc 1 to ensure the stability of the first supporting plate 5 and the second supporting plate 8 on the side walls of the thin-walled furnace tube 21 after positioning.

[0039] Mainly referring to Figures 2 to 4As shown, the rear wall of the fixing plate 10 is fixedly installed with a mounting plate 15, the rear side of the mounting plate 15 is installed with a vertical plate 17, the bottom end of the vertical plate 17 is vertically installed with a bottom plate 16, and the mounting plate 15 can realize stable connection of the rotating disc 1 and the vertical plate 17, that is, can provide mounting support for the rotating disc 1, thereby ensuring the fixed installation of the fixing plate 10 and the limiting frame 6 on the front side of the vertical plate 17.

[0040] In addition, mainly referring to Figure 1 and Figure 2 As shown, the bottom plate 16 is provided with a supporting assembly of the thin-walled furnace tube 21; the supporting assembly comprises a base 18 installed on the bottom plate 16, two rotating rods 19 are symmetrically and rotatably arranged at the top end of the base 18, and each rotating rod 19 is provided with a roller 20, the thin-walled furnace tube 21 is placed on the two rollers 20, the two rollers 20 can preliminarily support the thin-walled furnace tube 21, and the edge of the thin-walled furnace tube 21 extends into the space between the four groups of second supporting plates 8 and the first supporting plates 5, thereby realizing the preliminary placement of the thin-walled furnace tube 21 above the rollers 20.

[0041] Specifically, the arc length of each first supporting plate 5 is N, and the arc length of the thin-walled furnace tube 21 is M, wherein N < 0.25M, that is, enough space is left between the adjacent two first supporting plates 5, so that the first supporting plates 5 gradually move away from the inner wall of the thin-walled furnace tube 21 without interfering with each other, and enough space is left for the movement of the first supporting plates 5 to the middle.

[0042] It is worth noting that in the present application, the worm gear 12 and the worm 14 are existing devices, which are connected to realize driving and can realize self-locking stability after rotation, and a general type on the market can be used, and no further description and limitation is made here.

[0043] The working principle of the thin-walled furnace tube processing mold of the embodiment is as follows:

[0044] The thin-walled furnace tube 21 is placed on the two rollers 20, and the two rollers 20 can preliminarily support the thin-walled furnace tube 21, and the edge of the thin-walled furnace tube 21 extends into the space between the four groups of second supporting plates 8 and the first supporting plates 5;

[0045] The rotation of the worm gear 12, the rotating shaft 11 and the rotating disc 1 is driven by the rotation of the worm 14, and the rotation of the rotating disc 1 drives the four moving pins 3 to move along the inner cavities of the corresponding driving grooves 2, so that the four groups of first moving rods 4 move along the corresponding limiting racks 6 towards the thin-walled furnace tube 21, thereby realizing that the four groups of first supporting plates 5 gradually adhere to the inner side wall of the thin-walled furnace tube 21 and supporting the inner side wall of the thin-walled furnace tube 21; meanwhile, the rotation of the linkage rod 9 is driven by the movement of the first supporting plate 5 towards the inner side wall of the thin-walled furnace tube 21, so as to drive the second supporting plate 8 to move towards the outer side wall of the thin-walled furnace tube 21, until the second supporting plate 8 adheres to the outer side wall of the thin-walled furnace tube 21; thus, the first supporting plate 5 and the second supporting plate 8 are synchronously clamped on the inner and outer side walls of the thin-walled furnace tube 21, the thin-walled furnace tube 21 is completely supported, and subsequent cutting or grinding processing along the edges positioned by the first supporting plate 5 and the second supporting plate 8 can avoid deformation of the thin-walled furnace tube 21 caused by cutting stress or grinding stress during processing;

[0046] The multiple sets of second supporting plates 8 and first supporting plates 5 arranged close to each other can circumferentially clamp and position the thin-walled furnace tube 21, ensure that the circumferential direction of the thin-walled furnace tube 21 is supported in all directions, avoid deformation of the thin-walled furnace tube 21 caused by cutting stress or grinding stress during subsequent processing, ensure the appearance quality and finished product accuracy of the thin-walled furnace tube 21, and realize cooperative positioning of each supporting point in the circumferential direction of the thin-walled furnace tube 21, thereby providing stable and accurate supporting and positioning effects for the thin-walled furnace tube 21, avoiding positioning deviation caused by asynchronization, effectively improving the accuracy and reliability of supporting and positioning, and further ensuring that the movement of the second supporting plate 8 and the first supporting plate 5 is highly synchronous without the need to provide driving force for the second supporting plate 8, thereby simplifying the complexity of the driving system, effectively ensuring the cooperativeness and accuracy of the movement of the second supporting plate 8 and the first supporting plate 5, and providing a strong guarantee for stable operation of the entire device.

[0047] The preferred embodiments of the utility model are described above only, and are not used for limiting the utility model, for the person skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A thin walled furnace tube machining die comprising a thin walled furnace tube (21) characterized by: Also include the rotating disc (1), the rotating disc (1) is provided with a plurality of groups of support units, a plurality of groups of the support units are arranged equidistantly around the rotating disc (1) with the center as the axis; Each group of the support units includes a driving slot (2) opened on the rotating disc (1), one end of a moving pin (3) is slidably embedded in the inner cavity of the driving slot (2), the other end of the moving pin (3) is provided with a first moving rod (4), the first moving rod (4) is provided with a first support plate (5) away from one end of the moving pin (3), the support unit further includes a limiting frame (6), one end of the limiting frame (6) is slidably provided with a second moving rod (7), the second moving rod (7) is provided with a second support plate (8) close to one end of the first support plate (5), and the first support plate (5) and the second support plate (8) are arranged in position corresponding to the inside and outside, the second support plate (8) and the first support plate (5) are rotatably connected with a linkage rod (9), and the linkage rod (9) is rotatably connected with the limiting frame (6); Wherein, the first moving rod (4) slides through the limiting frame (6).

2. A thin walled furnace tube machining die according to claim 1 wherein: The first support plate (5) and the second support plate (8) are both arranged as arc-shaped, and the arc of the first support plate (5) and the second support plate (8) is matched with the arc of the thin-walled furnace tube (21).

3. A thin walled furnace tube machining die according to claim 1 wherein: The limiting frame (6) is fixedly installed with a fixed plate (10), the rotating disc (1) is fixedly installed with a rotating shaft (11) on the rear side wall, the rotating shaft (11) penetrates through the fixed plate (10) to the rear side, the rotating shaft (11) is fixedly installed with a worm wheel (12), the fixed plate (10) is installed with two mounting seats (13) on the rear side wall, the two mounting seats (13) are rotatably connected with a worm (14), and the worm (14) is meshingly connected with the side wall of the worm wheel (12).

4. A thin walled furnace tube machining die according to claim 3 wherein: The fixed plate (10) is fixedly installed with a mounting plate (15) on the rear side wall, the mounting plate (15) is installed with a vertical plate (17) on the rear side, and the vertical plate (17) is vertically installed with a bottom plate (16) at the bottom end.

5. A thin walled furnace tube machining die according to claim 4 wherein: The bottom plate (16) is provided with a supporting assembly of the thin-walled furnace tube (21); The supporting assembly includes a base (18) installed on the bottom plate (16), the base (18) is rotatably provided with two rotating rods (19) on the top end, and each rotating rod (19) is provided with a roller (20).

6. A thin walled furnace tube machining die according to claim 1 wherein: The limiting frame (6) is arranged as U-shaped.

7. A thin walled furnace tube machining die according to claim 1 wherein: The arc length of each first support plate (5) is N, and the arc length of the thin-walled furnace tube (21) is M, wherein N < 0.25M.

8. A thin walled furnace tube machining die according to claim 1 wherein: The second moving rod (7) is collinear with the extension line of the first moving rod (4).

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