Roll bending forming device for section bar with continuously variable cross section

Abstract

The utility model relates to a continuous variable section profile roll bending forming device which comprises two vertical plates which are symmetrically arranged left and right, an upper power shaft and a lower power shaft are installed between the two vertical plates, the upper power shaft is connected with a first motor, the lower power shaft is connected with a second motor, an upper ball screw is arranged in the upper power shaft in a penetrating mode, and a lower ball screw is arranged in the lower power shaft in a penetrating mode. The upper ball screw is connected with a third motor, a lower ball screw is arranged in the lower power shaft in a penetrating mode, the lower ball screw is connected with a fourth motor, and opposite threads are arranged at the two ends of the upper ball screw and the two ends of the lower ball screw. Upper nut pairs are mounted on two opposite thread sections of the upper ball screw and are connected with the upper roller; lower nut pairs are mounted on two opposite threaded sections of the lower ball screw and are connected with a lower roller; and a profile forming channel is formed between the upper roller and the lower roller. The device is simple in structure and convenient to operate, and can realize non-disassembly adjustment among different batches of profiles and meet the production requirements of variable cross-section profiles.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of roll forming, especially to a continuously changing cross-section profile roll forming device. BACKGROUND

[0002] Roll forming is a plastic processing technology that makes a specific cross-section profile by continuously bending metal strips through a plurality of forming rollers arranged in sequence, and is a high-efficiency profile production method. However, the traditional roll forming production line cannot produce variable cross-section profiles, and needs to replace the roller set and manually adjust the roller gap, height and other factors when producing different size profiles, which is complicated to operate. SUMMARY

[0003] The utility model aims at solving the prior art's insufficient, and provides a continuously changing cross-section profile roll forming device.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A continuously changing cross-section profile roll forming device comprises two vertical plates arranged symmetrically left and right, an upper power shaft and a lower power shaft installed between the two vertical plates, a first motor connected to the upper power shaft, a second motor connected to the lower power shaft, an upper ball screw threadedly arranged in the upper power shaft, a third motor connected to the upper ball screw, a lower ball screw threadedly arranged in the lower power shaft, and a fourth motor connected to the lower ball screw. The upper ball screw and the lower ball screw are both provided with opposite threads at both ends.

[0006] Two upper nut pairs are installed on the two opposite thread segments of the upper ball screw, and the upper nut pairs are fixed with upper connecting keys by bolts. Two upper rollers are arranged on the upper power shaft, and the upper connecting keys are clamped in the key grooves of the upper rollers and fixedly connected through the upper fixed end covers on both sides.

[0007] Two lower nut pairs are installed on the two opposite thread segments of the lower ball screw, and the lower nut pairs are fixed with lower connecting keys by bolts. Two lower rollers are arranged on the lower power shaft, and the lower connecting keys are clamped in the key grooves of the lower rollers and fixedly connected through the lower fixed end covers on both sides.

[0008] The two lower rollers are located outside the two upper rollers, and the profile forming channel is formed between the upper rollers and the lower rollers.

[0009] The upper roller comprises a first upper vertical surface facing the vertical plate and a second upper vertical surface facing away from the vertical plate, the diameter of the first upper vertical surface is smaller than the diameter of the second upper vertical surface, an upper through hole is arranged between the first upper vertical surface and the second upper vertical surface, an upper key plate is arranged in the upper through hole, a key groove is arranged in the upper key plate, an upper connecting key is clamped in the key groove of the upper key plate, two upper fixed end covers are installed in the upper through hole and are fixed on the two sides of the upper key plate through bolts, and the first upper vertical surface and the second upper vertical surface form a first upper constant diameter section, an upper variable diameter section and a second upper constant diameter section.

[0010] The lower roller comprises a first lower vertical surface facing the vertical plate and a second lower vertical surface facing away from the vertical plate, the diameter of the first lower vertical surface is larger than the diameter of the second lower vertical surface, a lower through hole is arranged between the first lower vertical surface and the second lower vertical surface, a lower key plate is arranged in the lower through hole, a key groove is arranged in the lower key plate, a lower connecting key is clamped in the key groove of the lower key plate, two lower fixed end covers are installed in the lower through hole and are fixed on the two sides of the lower key plate through bolts, and the first lower vertical surface and the second lower vertical surface form a lower constant diameter section and a lower variable diameter section.

[0011] The first upper constant diameter section bottom and the lower constant diameter section top are flushly arranged, and the upper variable diameter section and the lower variable diameter section are parallelly arranged and form a profile forming channel therebetween.

[0012] The utility model discloses the beneficial effect is: the utility model structure is simple, convenient operation can realize the non-disassembly adjustment between different profile batches and satisfy the production demand of variable cross section profile. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the structural schematic diagram of the utility model;

[0014] Figure 2 It is the specific structural schematic diagram of the upper roller and lower roller of the utility model;

[0015] Figure 3 It is the shape diagram of profile forming channel in the utility model;

[0016] Figure 4 It is the variable cross section profile schematic diagram after adopting the utility model;

[0017] In the drawing: 1-vertical plate;2-upper power shaft;3-lower power shaft;4-first motor;5-second motor;6-upper ball screw;7-third motor;8-lower ball screw;9-fourth motor;10-upper nut pair;11-upper connecting key;12-upper roller;13-upper fixed end cover;14-lower nut pair;15-lower connecting key;16-lower roller;17-lower fixed end cover;18-profile forming channel;19-upper bearing;20-lower bearing;21-flexible coupling;

[0018] 1201 - first upper vertical surface; 1202 - second upper vertical surface; 1203 - upper through hole; 1204 - upper key plate; 1205 - first upper constant diameter section; 1206 - upper variable diameter section; 1207 - second upper constant diameter section;

[0019] 1601-first lower vertical surface; 1602-second lower vertical surface; 1603-lower through hole; 1604-lower key plate; 1605-lower constant diameter section; 1606-lower variable diameter section;

[0020] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0021] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples provided are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. The following paragraphs describe the present invention in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are all in a very simplified form and are not in exact proportions. They are only used to facilitate and clearly illustrate the embodiments of the present invention.

[0022] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a central component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0025] like Figures 1 to 2As shown, a continuously variable cross-section profile roll bending forming device includes a vertical plate 1, an upper power shaft 2, a lower power shaft 3, a first motor 4, a second motor 5, an upper ball screw 6, a third motor 7, a lower ball screw 8, a fourth motor 9, an upper nut pair 10, an upper connecting key 11, an upper roller 12, an upper fixed end cover 13, a lower nut pair 14, a lower connecting key 15, a lower roller 16, a lower fixed end cover 17, a profile forming channel 18, an upper bearing 19, a lower bearing 20, and a flexible coupling 21.

[0026] The two vertical plates 1 are arranged symmetrically on the left and right. An upper power shaft 2 and a lower power shaft 3 are installed between the two vertical plates 1. The upper power shaft 2 is rotatably installed between the two vertical plates 1 through an upper bearing 19, and the lower power shaft 3 is rotatably installed between the two vertical plates 1 through a lower bearing 20.

[0027] The upper power shaft 2 is connected to a first motor 4 , and the lower power shaft 3 is connected to a second motor 5 .

[0028] An upper ball screw 6 is passed through the upper power shaft 2, and the upper ball screw 6 is connected to the third motor 7. A lower ball screw 8 is passed through the lower power shaft 3, and the lower ball screw 8 is connected to the fourth motor 9. Opposite threads are provided at both ends of the upper ball screw 6 and the lower ball screw 8, and the opposite thread segments at both ends of the upper ball screw 6 and the lower ball screw 8 are connected by a flexible coupling 21.

[0029] An upper nut pair 10 is installed on the two opposite threaded sections of the upper ball screw 6. The upper nut pair 10 is fixed with an upper connecting key 11 by bolts. Two upper rollers 12 are passed through the upper power shaft 2. The upper connecting key 11 is stuck in the keyway of the upper roller 12 and is fixedly connected by the upper fixed end caps 13 on both sides.

[0030] The upper rolling roller 12 includes a first upper vertical surface 1201 facing the vertical plate 1 and a second upper vertical surface 1202 facing away from the vertical plate 1. The diameter of the first upper vertical surface 1201 is smaller than the diameter of the second upper vertical surface 1202. An upper through hole 1203 is provided between the first upper vertical surface 1201 and the second upper vertical surface 1202. An upper key plate 1204 is provided in the upper through hole 1203. A key slot is provided in the upper key plate 1204. The upper connecting key 11 is stuck in the key slot of the upper key plate 1204. Two upper fixed end covers 13 are installed in the upper through hole 1203 and fixed to both sides of the upper key plate 1204 by bolts. A first upper equal diameter section 1205, an upper reduced diameter section 1206 and a second upper equal diameter section 1207 are formed between the first upper vertical surface 1201 and the second upper vertical surface 1202.

[0031] A lower nut pair 14 is mounted on the two opposite threaded sections of the lower ball screw 8. The lower nut pair 14 is fixed with a lower connecting key 15 by bolts. Two lower rollers 16 are passed through the lower power shaft 3. The lower connecting key 15 is stuck in the keyway of the lower roller 16 and is fixedly connected by the lower fixed end caps 17 on both sides.

[0032] The lower roller 16 comprises a first lower vertical surface 1601 facing the vertical plate 1 and a second lower vertical surface 1602 facing away from the vertical plate 1, the diameter of the first lower vertical surface 1601 is larger than that of the second lower vertical surface 1602, a lower through hole 1603 is arranged between the first lower vertical surface 1601 and the second lower vertical surface 1602, a lower key plate 1604 is arranged in the lower through hole 1603, a key groove is arranged in the lower key plate 1604, the lower connecting key 15 is clamped in the key groove of the lower key plate 1604, and two lower fixed end covers 17 are arranged in the lower through hole 1603 and fixed on the two sides of the lower key plate 1604 through bolts, and the first lower vertical surface 1601 and the second lower vertical surface 1602 form a lower constant diameter section 1605 and a lower variable diameter section 1606.

[0033] The two lower rollers 16 are located outside the two upper rollers 12, and the upper roller 12 and the lower roller 16 form a profile forming channel 18, as shown in the shape. Figure 3

[0034] Specifically, the bottom of the first upper constant diameter section 1205 and the top of the lower constant diameter section 1605 are flushly arranged, the upper variable diameter section 1206 and the lower variable diameter section 1606 are arranged in parallel and form the profile forming channel 18 therebetween.

[0035] In the utility model, the power shaft and the ball screw are connected to different motors respectively, independent rotation is realized, when the power shaft and the ball screw rotate synchronously, the position of the nut pair on the ball screw is unchanged, the roller gap is ensured to be unchanged, and thus the fixed cross-section profile is produced, when the power shaft and the ball screw rotate at different speeds, the nut pair drives the rollers to move inward or outward synchronously, and thus the variable cross-section profile is produced, as shown in the figure. Figure 4

[0036] The roll forming device of the utility model is simple in structure and convenient to operate, and can realize efficient forming from the initial strip coil to the final variable cross-section profile product in combination with the uncoiling and leveling platform; the same roll set can be used to realize the production of variable cross-section profiles with different cross-section widths, and the roll set adjustment can be controlled through the PLC system, and continuous real-time adjustment in production can be realized.

[0037] The operation is as follows:

[0038] Step one, determine the roll shape and the number of roll sets in the variable cross-section roll forming device according to the shape and complexity of the target profile piece;

[0039] Step two, determine the strip size according to the width and depth size of the target profile piece at the variable cross-section, and encode the corresponding PLC control program;

[0040] Step three, determine the strip feeding speed and the rotating speed of the power shaft and the ball screw according to the width and depth size of the target profile piece at the variable cross-section, and encode the corresponding PLC control program.​​

[0041] Step four, the original material strip passes through the plate material uncoiling and leveling device, and then enters the variable cross-section forming roller group, gradually deforms, in the non-variable cross-section area, the power shaft and the ball screw rotate synchronously, in the variable cross-section area, the rotating speed of the power shaft and the ball screw accurately changes at a differential speed under the control of the PLC system, and the left and right rollers synchronously move inward and outward, so that the variable cross-section area is accurately formed.

[0042] The utility model has been described above in conjunction with the drawings, and obviously, the specific implementation of the utility model is not limited by the above-mentioned mode, as long as various improvements are made by adopting the method concept and technical scheme of the utility model, or direct application in other occasions without improvement, which are all within the protection scope of the utility model.

Claims

1. A roll-bending device for continuously changing cross-section profiles, characterized in that: The invention comprises two vertical plates (1) arranged symmetrically on the left and right, an upper power shaft (2) and a lower power shaft (3) are installed between the two vertical plates (1), the upper power shaft (2) is connected to a first motor (4), the lower power shaft (3) is connected to a second motor (5), an upper ball screw (6) is passed through the upper power shaft (2), the upper ball screw (6) is connected to a third motor (7), a lower ball screw (8) is passed through the lower power shaft (3), the lower ball screw (8) is connected to a fourth motor (9), and opposite threads are provided at both ends of the upper ball screw (6) and the lower ball screw (8); An upper nut pair (10) is installed on two opposite threaded sections of the upper ball screw (6), and the upper nut pair (10) is fixed with an upper connecting key (11) by bolts. Two upper rollers (12) are passed through the upper power shaft (2), and the upper connecting key (11) is stuck in the keyway of the upper roller (12) and fixedly connected through upper fixed end covers (13) on both sides. A lower nut pair (14) is installed on two opposite threaded sections of the lower ball screw (8), and the lower nut pair (14) is fixed with a lower connecting key (15) by bolts. Two lower rollers (16) are passed through the lower power shaft (3), and the lower connecting key (15) is stuck in the keyway of the lower roller (16) and fixedly connected through the lower fixed end covers (17) on both sides. The two lower rollers (16) are located outside the two upper rollers (12), and a profile forming channel (18) is formed between the upper rollers (12) and the lower rollers (16).

2. The roll-bending device for continuously variable cross-section profiles according to claim 1, characterized in that: The upper roller (12) includes a first upper vertical surface (1201) facing the vertical plate (1) and a second upper vertical surface (1202) facing away from the vertical plate (1). The diameter of the first upper vertical surface (1201) is smaller than the diameter of the second upper vertical surface (1202). An upper through hole (1203) is provided between the first upper vertical surface (1201) and the second upper vertical surface (1202). An upper key plate (1204) is provided in the upper through hole (1203). A keyway is provided in (1204), the upper connecting key (11) is stuck in the keyway of the upper key plate (1204), the two upper fixed end covers (13) are installed in the upper through hole (1203) and fixed to the two sides of the upper key plate (1204) by bolts, and the first upper equal diameter section (1205), the upper variable diameter section (1206) and the second upper equal diameter section (1207) are formed between the first upper vertical surface (1201) and the second upper vertical surface (1202).

3. The roll-bending device for continuously variable cross-section profiles according to claim 2, characterized in that: The lower roller (16) includes a first lower vertical surface (1601) facing the vertical plate (1) and a second lower vertical surface (1602) facing away from the vertical plate (1). The diameter of the first lower vertical surface (1601) is larger than the diameter of the second lower vertical surface (1602). A lower through hole (1603) is provided between the first lower vertical surface (1601) and the second lower vertical surface (1602). A lower key plate (1604) is provided in the lower through hole (1603). A key groove is provided in the lower key plate (1604). The lower connecting key (15) is stuck in the key groove of the lower key plate (1604). Two lower fixed end covers (17) are installed in the lower through hole (1603) and fixed to both sides of the lower key plate (1604) by bolts. A lower equal diameter section (1605) and a lower diameter reducing section (1606) are formed between the first lower vertical surface (1601) and the second lower vertical surface (1602).

4. The roll-bending device for continuously variable cross-section profiles according to claim 3, characterized in that: The bottom of the first upper constant diameter section (1205) and the top of the lower constant diameter section (1605) are arranged flush with each other, and the upper variable diameter section (1206) and the lower variable diameter section (1606) are arranged in parallel to form a profile forming channel (18) therebetween.

5. The roll-bending device for continuously variable cross-section profiles according to claim 4, characterized in that: The upper power shaft (2) is rotatably mounted between the two vertical plates (1) via an upper bearing (19).

6. The roll-bending device for continuously variable cross-section profiles according to claim 5, characterized in that: The lower power shaft (3) is rotatably mounted between the two vertical plates (1) via a lower bearing (20).

7. The roll-bending device for continuously variable cross-section profiles according to claim 6, characterized in that: The threaded sections at opposite ends of the upper ball screw (6) and the lower ball screw (8) are connected via a flexible coupling (21).

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