A continuous spiral bending device for V-shaped rods

Abstract

The present invention provides a continuous spiral bending device for a V-shaped rod, and belongs to the field of mechanical processing technology. The device includes a bending mechanism arranged on a workbench, a feeding mechanism arranged on the right side of the bending mechanism, the bending mechanism includes a cylindrical first guide wheel column arranged on the workbench, a first annular guide groove is provided on the side wall of the first guide wheel column, a first inclined abutment surface is formed on the bottom of the first annular guide groove, a guide wheel frame is provided on one side of the first guide wheel column, a rotating shaft driven by a first driving motor is fixed on the guide wheel frame, a rotating plate is fixed on the lower end of the rotating shaft, a second guide wheel column is fixed on the rotating plate, and a second annular guide groove with the same horizontal height as the first annular guide groove is provided on the second guide wheel column. A second annular guide groove with the same horizontal height as the first annular guide groove is provided on the second guide wheel column, and a second inclined abutment surface is formed on the bottom of the second annular guide groove. The present invention has the advantages of being more efficient in continuous spiral bending processing of special workpieces such as V-shaped rods.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a V-shaped rod continuous bending device. Background Art

[0002] At present, the traditional continuous bending or continuous bending of workpieces uses CNC pipe bending machines or hydraulic pipe bending machines, which adjust the operation by giving variable data and given processing time. Under the condition that the traditional pipe bending technology is relatively mature, the workpieces it often targets are relatively common pipes or solid rods, and there are certain technical difficulties for workpieces with special structures.

[0003] There are V-shaped rods on the current market, which are straight rod structures with a V-shaped cross-section. Their application range includes spiral plate heat exchangers. During use, the rods need to be placed in the spiral side walls of the heat exchanger and then welded. Traditionally, the V-shaped rods cannot be squeezed into the spiral side walls. If they are forced in, there will be a large gap during the welding process and it will be very difficult to place them. Therefore, the V-shaped rods are continuously spirally bent in advance to facilitate the subsequent welding of the side walls of the heat exchanger, which brings certain conveniences to the processing. However, when traditional pipe bending equipment bends the V-shaped rods, the side walls of the V-shaped rods will be greatly deformed, making it impossible to realize the subsequent use of the V-shaped rods. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a V-shaped rod continuous bending device to solve the problem of the difficulty in continuous bending operation of special workpieces.

[0005] The object of the present invention is achieved in that:

[0006] A continuous spiral bending device for a V-shaped rod comprises a workbench, a bending mechanism is arranged on the workbench, and a feeding mechanism is arranged on the right side of the bending mechanism. The bending mechanism comprises a cylindrical first guide wheel column arranged on the workbench, a side wall of the first guide wheel column is provided with a first annular guide groove, a groove bottom of the first annular guide groove is formed with a first inclined abutment surface, and when the V-shaped rod enters the first guide wheel column, a side surface of the V-shaped rod abuts against the first inclined abutment surface, a guide wheel frame is arranged on one side of the first guide wheel column, a rotating shaft driven by a first driving motor is fixed on the guide wheel frame, a rotating plate is fixed on the lower end of the rotating shaft, and a second guide wheel column is fixed on the rotating plate, a second annular guide groove is arranged on the second guide wheel column with the same horizontal height as the first annular guide groove, a vertical height of the first annular guide groove and the second annular guide groove is the same as the vertical height of the V-shaped rod, and a second inclined abutment surface is formed on the groove bottom of the second annular guide groove, and when the V-shaped rod enters the second guide wheel column from the first guide wheel column, the other side surface of the V-shaped rod abuts against the second inclined abutment surface.

[0007] The present invention is further configured as follows: the feeding mechanism includes a feeding rack fixed on the workbench, a first feeding motor and a second feeding motor arranged opposite to each other are fixed at the front and rear of the feeding rack, a pressing driving gear is arranged on the output shaft of the first feeding motor, and a supporting driving gear is arranged on the output shaft of the second feeding motor, a pressing shaft group and a supporting shaft group are fixed above and below the feeding rack, a V-shaped convex ring matched with the V-shaped rod is arranged on the pressing shaft group, a pressing driven gear meshing with the pressing driving gear is arranged on the rear side of the pressing shaft group, a V-shaped ring groove matched with the V-shaped rod is arranged on the supporting shaft group, a supporting driven gear meshing with the supporting driving gear is arranged on the front side of the supporting shaft group, and the V-shaped convex ring and the V-shaped ring groove are located on the same vertical plane.

[0008] The present invention is further configured as follows: the press shaft group includes press shafts that are parallel to each other and horizontally fixed on the feeding rack, each press shaft is provided with the V-shaped convex ring, the rear side of each press shaft is fixed with the press driven gear, and the press driving gear is arranged between the two press driven gears; the support shaft group includes support shafts that are parallel to each other and horizontally fixed on the feeding rack, the support shafts are located below the press shafts, each support shaft is provided with the V-shaped ring groove, the front side of each support shaft is fixed with the support driven gear, and the support driving gear is arranged between the two support driven gears.

[0009] The present invention is further configured such that a slide that slides up and down is provided in the feeding rack, the pressing shaft is fixed on the slide, connecting plates are fixed on both sides of the slide, a mounting plate for fixing the first feeding motor is provided between the rear sides of the connecting plates, longitudinal sliders are formed on the rear sides of the two connecting plates, longitudinal slide rails for the longitudinal sliders to slide up and down are provided on both sides of the first feeding motor, and when the slide slides up and down, the first feeding motor, the pressing shaft, the connecting plate and the mounting plate slide up and down.

[0010] The present invention is further configured such that an adjusting pressure plate is fixed to the upper end of the slide, and the adjusting pressure plate slides up and down through a screw rod.

[0011] The present invention is further configured such that an adjustment port is provided on the workbench, the first guide wheel column is located above the adjustment port, a bearing is sleeved on the first guide wheel column, adjustment plates are formed at both ends of the bearing, and a plurality of adjustment screw holes are provided on the adjustment plate.

[0012] The present invention is further configured such that a support plate is provided at the lower end of the bottom of the guide wheel frame, and the bottom of the support plate is fixed to the left end of the upper surface of the workbench by bolts.

[0013] The present invention is further configured such that a first material guide seat is arranged between the bending mechanism and the feeding mechanism, a second material guide seat is arranged on the right side of the feeding mechanism, and both the first material guide seat and the second material guide seat are provided with V-shaped wheels adapted to the V-shaped rod, and both the first material guide seat and the second material guide seat are fixed to the workbench by bolts.

[0014] The present invention is further configured such that an adjusting hand wheel is sleeved on the upper end of the screw.

[0015] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:

[0016] 1. The present invention allows the V-shaped rod to enter the first guide wheel column with a first inclined abutment surface so that one surface of the rod can abut against the first guide wheel column, and then enter the second guide wheel column with a second inclined abutment surface so that the other surface of the rod can abut against the first guide wheel column. Through continuous feeding and the rotation of the second guide wheel column driven by the rotating shaft, the second inclined abutment surface on the second guide wheel column continuously gives the rod a forward or backward force. The two surfaces of the V-shaped rod are evenly stressed, so that the rod can complete a continuous bending operation. By controlling the rotation speed of the rotating plate on the guide wheel frame, it is helpful to adjust the spiral angle of the V-shaped rod.

[0017] 2. The feeding mechanism of the present invention has the function of stable pressing and conveying of the V-shaped rod. The V-shaped convex ring on the pressing shaft and the V-shaped ring groove on the supporting shaft fasten the V-shaped rod up and down, making it easier to bite the V-shaped workpiece during feeding, making feeding more efficient.

[0018] 3. The present invention further enables the pressing shaft assembly and the first driving motor to slide up and down, which has a certain adjustment effect on V-shaped rods of different thicknesses, so that the feeding mechanism has a wider range of applications and makes the placement of the V-shaped rods more convenient.

[0019] 4. The adjustment pressure plate further provided in the present invention facilitates the degree of engagement of the V-shaped rod, and manual adjustment makes it easier to control the degree of adjustment.

[0020] 5. The support plate disposed at the lower end of the guide wheel frame of the present invention enables the annular guide grooves of the second guide wheel column and the first guide wheel column to be at the same level, thereby ensuring the normal continuous bending operation of the V-shaped rod.

[0021] 6. The first material guide seat and the second material guide seat provided in the present invention provide a guide for the V-shaped rods entering the feeding mechanism and the bending mechanism, so that vibration is not likely to occur during continuous bending operations and conveying, thereby ensuring work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2It is a structural schematic diagram of the bending mechanism of the present invention;

[0024] Figure 3 yes Figure 2 An enlarged schematic diagram of a local A;

[0025] Figure 4 It is a structural schematic diagram of the feeding mechanism of the present invention;

[0026] Figure 5 It is an exploded schematic diagram of the feeding mechanism of the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the middle V-shaped rod of the present invention during processing;

[0028] Reference numerals:

[0029] In the figure:

[0030] 1- working table; 10- adjusting port;

[0031] 2-bending mechanism; 20-first guide wheel column; 200-first annular guide groove; 201-first inclined abutment surface; 21-guide wheel frame; 210-rotating shaft; 211-rotating plate; 212-first driving motor; 213-support plate; 22-second guide wheel column; 220-second annular guide groove; 221-second inclined abutment surface; 23-bearing; 230-adjusting plate;

[0032] 3-feeding mechanism; 30-feeding rack; 31-first feeding motor; 310-pressing drive gear; 32-second feeding motor; 320-supporting drive gear; 33-pressing shaft group; 330-V-shaped convex ring; 331-pressing driven gear; 332-pressing shaft; 34-supporting shaft group; 340-V-shaped ring groove; 341-supporting driven gear; 342-supporting shaft; 35-slide; 350-connecting plate; 351-mounting plate; 352-longitudinal slider; 353-longitudinal slide rail; 354-adjusting pressure plate; 355-screw; 356-adjusting hand wheel;

[0033] 4-first material guide seat; 40-V-shaped wheel; 5-second material guide seat. DETAILED DESCRIPTION

[0034] The present invention will be further described below with reference to specific embodiments of the present invention. Figures 1 to 6 :

[0035] A continuous spiral bending device for a V-shaped rod, characterized in that it comprises a workbench 1, a bending mechanism 2 is arranged on the workbench 1, a feeding mechanism 3 is arranged on the right side of the bending mechanism 2, the bending mechanism 2 comprises a cylindrical first guide wheel column 20 arranged on the workbench 1, a first annular guide groove 200 is opened on the side wall of the first guide wheel column 20, a first inclined abutment surface 201 is formed at the bottom of the first annular guide groove 200, when the V-shaped rod enters the first guide wheel column 20, the side surface of the V-shaped rod abuts against the first inclined abutment surface 201, a guide wheel frame 21 is arranged on one side of the first guide wheel column 20, and a first guide wheel frame 21 is fixed on the first guide wheel frame 21. A rotating shaft 210 driven by a first driving motor 212 is provided, a rotating plate 211 is fixed to the lower end of the rotating shaft 210, a second guide wheel column 22 is fixed to the rotating plate 211, a second guide wheel column 22 is provided with a second annular guide groove 220 at the same horizontal height as the first annular guide groove 200, a vertical height between the first annular guide groove 200 and the second annular guide groove 220 is the same as the vertical height of the V-shaped rod, a second inclined abutment surface 221 is formed at the bottom of the second annular guide groove 220, and when the V-shaped rod enters the second guide wheel column 22 from the first guide wheel column 20, the other side surface of the V-shaped rod abuts against the second inclined abutment surface 221.

[0036] After being sent out by the feeding mechanism 3, the V-shaped rod passes through the first guide wheel column 20, and one side of the V-shaped rod abuts against the first inclined abutment surface 201 of the first guide wheel column 20, which is one of the lower side surfaces of the V-shaped rod, and then enters the second guide wheel column 22, and the second inclined abutment surface 221 on the second guide wheel column 22 abuts against the other side surface. Both sides are subjected to force at the same time, so that when the bending operation occurs, it can play a role in force balance, avoiding one of the side surfaces from being subjected to force, causing unilateral deformation of the V-shaped rod and affecting the production quality of the workpiece. The two guide wheel columns are at the same horizontal height, but the front and rear positions are different, which will form an angle for the V-shaped rod, so that the V-shaped rod is continuously bent by the feeding mechanism and finally forms a spiral structure.

[0037] The rotating plate 211 on the guide wheel frame 21 has the following two working states: the rotating plate 211 slides forward or backward. The difference in the directions between the two brings about a change in the direction of the spiral, and the sliding speed of the rotating plate 211 affects the bending angle of the V-shaped rod. However, it is worth mentioning that the bending angle is also affected by the feeding speed of the feeding mechanism.

[0038] Preferably, the feeding mechanism 3 includes a feeding rack 30 fixed on the workbench 1, and a first feeding motor 31 and a second feeding motor 32 are fixed to the front and rear of the feeding rack 30, and a pressing drive gear 310 is arranged on the output shaft of the first feeding motor 31, and a supporting drive gear 320 is arranged on the output shaft of the second feeding motor 32. A pressing shaft group 33 and a supporting shaft group 34 are fixed to the upper and lower parts of the feeding rack 30, and a pressing shaft group 33 is arranged on the upper and lower parts of the pressing shaft group 33. A V-shaped convex ring 330 adapted to the V-shaped rod is provided, a press driven gear 331 meshing with the press driving gear 310 is provided on the rear side of the press shaft group 33, a V-shaped ring groove 340 adapted to the V-shaped rod is provided on the support shaft group 34, and a support driven gear 341 meshing with the support driving gear 320 is provided on the front side of the support shaft group 34, and the V-shaped convex ring 330 and the V-shaped ring groove 340 are located on the same vertical plane.

[0039] The feeding mechanism 3 includes a pressing shaft group 33 and a supporting shaft group 34, which are adapted to each other up and down. For the V-shaped rod, it can press each other up and down, and it is not easy to slip during the feeding process. Compared with the traditional upper and lower pulleys, for the V-shaped rod, a V-shaped convex ring 33 is set on the pressing shaft group 33, which can be adapted to the V-shaped groove at the upper end of the V-shaped rod; similarly, the V-shaped ring groove 340 of the supporting shaft group 34 is also the same. After providing good feeding, the tightly bitten V-shaped rod enhances the continuous spiral bending operation and improves the production quality.

[0040] Preferably, the pressing shaft group 33 includes pressing shafts 332 that are parallel to each other and horizontally fixed on the feeding rack 30, each pressing shaft 332 is provided with the V-shaped convex ring 330, the rear side of each pressing shaft 332 is fixed with the pressing driven gear 331, and the pressing driving gear 310 is arranged between the two pressing driven gears 331; the supporting shaft group 34 includes supporting shafts 342 that are parallel to each other and horizontally fixed on the feeding rack 30, the supporting shafts 342 are located below the pressing shafts 332, each supporting shaft 342 is provided with the V-shaped ring groove 340, the front side of each supporting shaft 342 is fixed with the supporting driven gear 341, and the supporting driving gear 320 is arranged between the two supporting driven gears 341.

[0041] The above-mentioned structure adopted by the pressing shaft 332 and the supporting shaft 342 can drive the gears on both sides in the same direction when the feeding motor rotates, making the transmission of the supporting shaft group and the pressing shaft group more reasonable. It is worth mentioning that in order to enable the pressing shaft group 33 and the supporting shaft group 34 to drive the V-shaped rod in the same direction to feed the bending mechanism 2, the direction of rotation of the first feeding motor and the second feeding motor is opposite.

[0042] Preferably, a slide 35 that slides up and down is provided in the feed rack 30, the pressure shaft 332 is fixed on the slide 35, connecting plates 350 are fixed on both sides of the slide 35, and a mounting plate 351 for fixing the first feeding motor 31 is provided between the rear sides of the connecting plates 350, and longitudinal sliders 352 are formed on the rear sides of the two connecting plates 350, and longitudinal slide rails 353 for the longitudinal sliders 352 to slide up and down are provided on both sides of the first feeding motor 31. When the slide 35 slides up and down, the first feeding motor 31, the pressure shaft 332, the connecting plate 350 and the mounting plate 351 slide up and down. The slide 35 can slide up and down on the feed rack 30. The sliding method can be to slide up and down on the side wall of the feed rack 30 in the form of a slide rail. The up and down sliding of the slide 35 can adjust the gap between the pressing shaft group 33 and the supporting shaft group 34, and provide a reserved space for placing the V-shaped rod. The V-shaped rod is placed, and the downward pressing slide 35 can make the pressing shaft group 33 more closely fit the upper surface of the V-shaped rod, thereby increasing the friction and transmitting the V-shaped rod more efficiently.

[0043] Preferably, an adjusting platen 354 is fixed to the upper end of the slide 35 , and the adjusting platen 354 slides up and down through a screw rod 355 .

[0044] Preferably, the workbench 1 is provided with an adjustment port 10, the first guide wheel column 20 is located above the adjustment port 10, a bearing 23 is sleeved on the first guide wheel column 20, an adjustment plate 230 is formed at both ends of the bearing 23, and a plurality of adjustment screw holes are provided on the adjustment plate 230. The adjustable setting of the first guide wheel column 20 facilitates the V-shaped rod of the discharge to be turned left or right to realize different spiral directions.

[0045] Preferably, support plates 213 are provided at the front and rear ends of the bottom of the slide frame 21, and the bottom of the support plate 213 is fixed to the left end of the upper surface of the workbench 1 by bolts. The elevated guide wheel frame 21 can keep the second annular guide groove 220 of the second guide wheel column 22 and the first annular guide groove 200 on the first guide wheel column 20 at the same horizontal height, making the design more reasonable.

[0046] Preferably, a first material guide seat 4 is arranged between the bending mechanism 2 and the feeding mechanism 3, and a second material guide seat 5 is arranged on the right side of the feeding mechanism 3. The first material guide seat 4 and the second material guide seat 5 are both provided with V-shaped wheels 40 adapted to the V-shaped rods, and the first material guide seat 4 and the second material guide seat 5 are both fixed to the workbench 1 by bolts.

[0047] Preferably, an adjusting hand wheel 356 is sleeved on the upper end of the screw rod 355 for easy adjustment.

[0048] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A continuous spiral bending device for a V-shaped rod, characterized in that: The invention comprises a workbench (1), a bending mechanism (2) is arranged on the workbench (1), a feeding mechanism (3) is arranged on the right side of the bending mechanism (2), the bending mechanism (2) comprises a cylindrical first guide wheel column (20) arranged on the workbench (1), a first annular guide groove (200) is formed on the side wall of the first guide wheel column (20), a first inclined abutment surface (201) is formed on the bottom of the first annular guide groove (200), when a V-shaped rod enters the first guide wheel column (20), the side surface of the V-shaped rod abuts against the first inclined abutment surface (201), a guide wheel frame (21) is arranged on one side of the first guide wheel column (20), a first drive motor (20) is fixed on the guide wheel frame (21) 12), a rotating shaft (210) driven by the rotating shaft (210), a rotating plate (211) is fixed at the lower end of the rotating shaft (210), a second guide wheel column (22) is fixed on the rotating plate (211), a second guide wheel column (22) is provided on the second guide wheel column (22), a second annular guide groove (220) having the same horizontal height as the first annular guide groove (200), a vertical height of the first annular guide groove (200) and the second annular guide groove (220) being the same as the vertical height of the V-shaped rod, a second inclined abutment surface (221) is formed on the bottom of the second annular guide groove (220), and when the V-shaped rod enters the second guide wheel column (22) from the first guide wheel column (20), the other side surface of the V-shaped rod abuts against the second inclined abutment surface (221).

2. A V-shaped rod continuous spiral bending device according to claim 1, characterized in that: The feeding mechanism (3) comprises a feeding frame (30) fixed on the workbench (1), a first feeding motor (31) and a second feeding motor (32) arranged opposite to each other are fixed at the front and rear of the feeding frame (30), a material pressing driving gear (310) is arranged on the output shaft of the first feeding motor (31), a material supporting driving gear (320) is arranged on the output shaft of the second feeding motor (32), a material pressing shaft group (33) and a material supporting shaft group (34) are fixed in the upper and lower parts of the feeding frame (30), and the material pressing shaft group (33) A V-shaped convex ring (330) adapted to the V-shaped rod is arranged on the upper surface, a press driven gear (331) meshing with the press driving gear (310) is arranged on the rear side of the press shaft group (33), a V-shaped annular groove (340) adapted to the V-shaped rod is arranged on the support shaft group (34), and a support driven gear (341) meshing with the support driving gear (320) is arranged on the front side of the support shaft group (34), and the V-shaped convex ring (330) and the V-shaped annular groove (340) are located on the same vertical plane.

3. A V-shaped rod continuous spiral bending device according to claim 2, characterized in that: The pressing shaft group (33) includes pressing shafts (332) which are parallel to each other and fixed horizontally on the feeding rack (30), each pressing shaft (332) is provided with the V-shaped convex ring (330), the rear side of each pressing shaft (332) is fixed with the pressing driven gear (331), and the pressing driving gear (310) is arranged between the two pressing driven gears (331); the supporting shaft group (34) includes supporting shafts (342) which are parallel to each other and fixed horizontally on the feeding rack (30), the supporting shafts (342) are located below the pressing shafts (332), each supporting shaft (342) is provided with the V-shaped ring groove (340), the front side of each supporting shaft (342) is fixed with the supporting driven gear (341), and the supporting driving gear (320) is arranged between the two supporting driven gears (341).

4. A V-shaped rod continuous spiral bending device according to claim 3, characterized in that: The feeding frame (30) is provided with a slide (35) that slides up and down, the pressing shaft (332) is fixed on the slide (35), connecting plates (350) are fixed on both sides of the slide (35), and a mounting plate (351) for fixing the first feeding motor (31) is provided between the rear sides of the connecting plates (350), and longitudinal sliders (352) are formed on the rear sides of the two connecting plates (350), and longitudinal slide rails (353) for the longitudinal sliders (352) to slide up and down are provided on both sides of the first feeding motor (31), and when the slide (35) slides up and down, the first feeding motor (31), the pressing shaft (332), the connecting plate (350) and the mounting plate (351) slide up and down.

5. The continuous spiral bending device for a V-shaped rod according to claim 4, characterized in that: An adjusting pressing plate (354) is fixed to the upper end of the slide (35), and the adjusting pressing plate (354) slides up and down via a screw rod (355).

6. The continuous spiral bending device for a V-shaped rod according to claim 1, characterized in that: The workbench (1) is provided with an adjustment opening (10), the first guide wheel column (20) is located above the adjustment opening (10), a bearing (23) is sleeved on the first guide wheel column (20), adjustment plates (230) are formed at both ends of the bearing (23), and a plurality of adjustment screw holes are provided on the adjustment plate (230).

7. The continuous spiral bending device for a V-shaped rod according to claim 1, characterized in that: A support plate (213) is provided at the lower end of the bottom of the guide wheel frame (21), and the bottom of the support plate (213) is fixed to the left end of the upper surface of the workbench (1) by bolts.

8. The continuous spiral bending device for a V-shaped rod according to claim 1, characterized in that: A first material guide seat (4) is arranged between the bending mechanism (2) and the feeding mechanism (3), and a second material guide seat (5) is arranged on the right side of the feeding mechanism (3). The first material guide seat (4) and the second material guide seat (5) are both provided with V-shaped wheels (40) adapted to the V-shaped rods, and the first material guide seat (4) and the second material guide seat (5) are both fixed to the workbench (1) by bolts.

9. The continuous spiral bending device for a V-shaped rod according to claim 5, characterized in that: The upper end of the screw rod (355) is sleeved with an adjusting hand wheel (356).

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