Pressing device for Z-shaped step plate

Abstract

The utility model belongs to the technical field of plate pressing, and particularly relates to a Z-shaped step plate pressing device which comprises a rack, an upper roller, two lower rollers, a first power device, a second power device, a third power device, a lifting device and a mould. During use, one end of a to-be-pressed step plate blank is inserted into the first fixing groove, the bottom end of the blank is fixedly and vertically arranged on the bottom plate, then the blank gradually gets close to the upper roller till the part, located outside the first fixing groove, of the blank is flattened, and then the long edge of the blank pressed for the first time is inserted into the second fixing groove; and enabling the bend pressed for the first time to face the direction of the upper roller, and repeating the pressing operation. The device is simple in structure, easy to manufacture, simple and convenient to operate, high in machining efficiency, time-saving and labor-saving, attractive in appearance, easy to popularize, capable of being applied to Z-shaped step plates with different ladder widths and capable of being repeatedly used, and materials are easy to obtain.

Description

Technical Field

[0001] The utility model belongs to the technical field of plate pressing, and particularly relates to a pressing device for a "Z"-shaped tread plate. Background Technique

[0002] In newly built, renovated or expanded industrial and civil buildings, it is often necessary to fabricate and install supporting steel stairs. Most of the steel ladder fabrication styles refer to the current national building standard design atlas "15J401 Steel Ladder". Among them, the a-type tread plate is one of the most common tread types. This type of tread plate is usually made of 4.5mm thick diamond plate, with both sides bent reversely at 90 degrees. The height of the folded edge is about 50mm. After forming, the end face of the tread plate is in a "Z" shape, so it is commonly known as the "Z"-shaped tread plate. Its two "Z"-shaped end faces are welded and fixed on the steel ladder beam, which is safe, reliable, economical and durable.

[0003] At present, a press is usually used to press the two 90-degree folded edges of the "Z"-shaped tread plate, but there are the following deficiencies: First, the press is large in volume and high in cost; second, it is cumbersome to adjust the pressing parameters of the press, and it is easy to over-press or under-press, affecting the quality; third, it is troublesome to disassemble and install the die during die replacement, which is laborious and time-consuming. Content of the Utility Model

[0004] In view of the problems existing in the prior art, the utility model provides a pressing device for a "Z"-shaped tread plate. The specific content of the utility model includes the following:

[0005] A pressing device for a "Z"-shaped tread plate includes a frame, an upper roller, two lower rollers, a first power device, a second power device, a third power device, a lifting device, and a die;

[0006] The two lower rollers are arranged horizontally and parallel to each other on the frame and are rotationally connected to the frame; the upper roller is arranged parallel to the two lower rollers above the two lower rollers, and the central axis of the upper roller and the middle line of the two lower rollers are located in the same vertical plane; the upper roller is connected to the frame through the lifting device and is rotationally connected to the lifting device; the first power device is connected to the two lower rollers; the second power device is connected to the upper roller; the third power device is connected to the lifting device. It should be noted that the frame, the upper roller, the two lower rollers, the first power device, the second power device, the third power device, and the lifting device in this device form a whole, and their specific connection relationship and structure are the same as or similar to those of the existing three-roll plate bending machine. Therefore, the utility model will not be introduced in detail.

[0007] The die is horizontally movably arranged between the upper roller and the lower roller. The die includes a bottom plate, a first cushion strip, and a second cushion strip. The first cushion strip and the second cushion strip have the same height. The first cushion strip and the second cushion strip are spaced apart on the upper surface of the bottom plate and are both perpendicular to the central axis of the upper roller. The spacing distance between the first cushion strip and the second cushion strip is less than the length of the upper roller. The upper surfaces of the first cushion strip and the second cushion strip are in contact with the upper roller. The bottom plate is a hard plate, and the lower surface of the bottom plate is in contact with the two lower rollers. At the position between the first cushion strip and the second cushion strip on the bottom plate, a first fixing groove and a second fixing groove are provided. The first fixing groove and the second fixing groove are both parallel to the central axis of the upper roller and are respectively located on both sides of the upper roller. The top heights of the first fixing groove and the second fixing groove are the same, and the height difference between the top of the first fixing groove and the second fixing groove and the top of the first cushion strip and the second cushion strip is the same as the thickness of the "Z"-shaped tread plate.

[0008] When the device is in use, after adjusting the bottom plate to a suitable position, the upper roller is lowered by adjusting the lifting device to press the first cushion strip and the second cushion strip. Then, one end of the tread plate blank to be pressed is inserted into the first or second fixing groove, so that the bottom end of the blank is fixedly vertically arranged on the bottom plate. Then, the two lower rollers are controlled to rotate by the first power device, and at the same time, the upper roller is controlled to rotate in the opposite direction to the lower roller by the second power device. The lower roller drives the bottom plate to move relatively, so that the blank gradually approaches the upper roller until the part of the blank located outside the first or second fixing groove is flattened. Then, the first motor and the second motor are controlled to make the upper roller and the lower roller rotate in opposite directions until they return to the starting position of the operation. The blank is taken out, and the pressing of the first 90° bend is completed. The long side of the blank after the first pressing is inserted into the first or second fixing groove, so that the bend of the first pressing faces the direction where the upper roller is located. The above pressing operation is repeated until the second 90° bend is pressed. At this time, the pressing of a "Z"-shaped tread plate is completed. Since there is a thickness difference between the tops of the first and second fixing grooves and the tops of the first and second cushion strips (i.e., the bottom of the upper roller) in this device and it is exactly the same as the thickness of the blank, when the blank is flattened, it just fits into the gap between the tops of the first and second fixing grooves and the upper roller. Therefore, the top thickness of the die will not increase during the whole pressing process, and the pressed-down die will not block the rotation of the upper roller, and a good pressing effect can be ensured. In addition, two fixing grooves are provided in this device, and the blanks can be inserted alternately for pressing at the same time, improving the production efficiency.

[0009] Preferably, the tooling further includes a third cushion bar, a fourth cushion bar, a fifth cushion bar, and a sixth cushion bar that are disposed between the first cushion bar and the second cushion bar and are perpendicular to both of them. The third cushion bar, the fourth cushion bar, the fifth cushion bar, and the sixth cushion bar have the same height and are all smaller than the heights of the first cushion bar and the second cushion bar. The difference between the heights of the first cushion bar and the second cushion bar and the heights of the third cushion bar, the fourth cushion bar, the fifth cushion bar, and the sixth cushion bar is equal to the thickness of the "Z"-shaped tread plate. The third cushion bar and the fourth cushion bar are spaced apart, and a first fixing groove is formed between them. The fifth cushion bar and the sixth cushion bar are spaced apart, and a second fixing groove is formed between them.

[0010] Specifically, the bottom plate can be made of steel plate. The first cushion bar, the second cushion bar, the third cushion bar, the fourth cushion bar, the fifth cushion bar, and the sixth cushion bar are all made of channel steel.

[0011] Preferably, the spacing distance between the two lower rollers is d, and 0 < d < the diameter of the upper roller, which can prevent the blank from bending upward during pressing due to the excessive distance between the two lower rollers.

[0012] Preferably, the distance from the first fixing groove to the end of the bottom plate closest to it is greater than the distance between the centers of the two lower rollers, and the distance from the second fixing groove to the end of the bottom plate closest to it is greater than the distance between the centers of the two lower rollers, which can ensure that the bottom plate will not come off one of the lower rollers during the pressing process.

[0013] Preferably, the widths of the first fixing groove and the second fixing groove are both 5 - 10 mm, and the depths are both ≥ 50 mm, which can ensure meeting the fixing and pressing requirements of the "Z"-shaped tread plate.

[0014] The beneficial effects of the present utility model:

[0015] The pressing device for the "Z"-shaped tread plate disclosed by the utility model includes a frame, an upper roller, two lower rollers, a first power device, a second power device, a third power device, a lifting device, and a bottom plate. When in use, after adjusting the bottom plate to a suitable position, by adjusting the lifting device, the upper roller descends and presses the first cushion strip and the second cushion strip. Then, one end of the tread plate blank to be pressed is inserted into the first or second fixing groove, so that the bottom end of the blank is fixedly vertically arranged on the bottom plate. Then, the two lower rollers are controlled to rotate by the first power device, and at the same time, the upper roller is controlled to rotate in the opposite direction to the lower rollers by the second power device. The lower rollers drive the bottom plate to move relatively, so that the blank gradually approaches the upper roller until the part of the blank outside the first or second fixing groove is flattened. Then, the first motor and the second motor are controlled to make the upper roller and the lower rollers rotate in opposite directions until they return to the starting position of the operation. The blank is taken out, and the pressing of the first 90° bend is completed. The long side of the blank after the first pressing is inserted into the first or second fixing groove, so that the bend after the first pressing faces the direction where the upper roller is located. The above pressing operation is repeated until the second 90° bend is pressed. At this time, the pressing of a "Z"-shaped tread plate is completed. Since there is a thickness difference between the tops of the first and second fixing grooves and the tops of the first and second cushion strips (i.e., the bottom of the upper roller) in this device and it is exactly the same as the thickness of the blank, when the blank is flattened, it just fits into the gap between the tops of the first and second fixing grooves and the upper roller. Therefore, the top thickness of the mold does not increase during the whole pressing process, and the pressed mold does not block the rotation of the upper roller, and a good pressing effect can be ensured. In addition, two fixing grooves are provided in this device, and the blanks can be inserted alternately for pressing at the same time, improving the production efficiency. This device has a simple structure, easy-to-obtain materials, easy to manufacture, simple operation, high processing efficiency, time-saving and labor-saving, beautiful molding and easy to promote. It can be applied to "Z"-shaped tread plates with different ladder widths and can be reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a front structural schematic diagram of the device;

[0017] Figure 2 is a top view of the device;

[0018] Figure 3 is a side view of the mold in the device;

[0019] Figure 4 is a schematic diagram of the movement direction of the first pressing;

[0020] Figure 5 is a schematic diagram of the movement direction of the second pressing;

[0021] Figure 6 is a schematic diagram of the "Z"-shaped tread plate pressed by the device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The present utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments shown below do not limit the content of the utility model recorded in the claims in any way. In addition, all the content of the composition shown in the following embodiments is not limited to what is necessary for the solution of the utility model recorded in the claims.

[0023] Refer to the attached Figures 1-3 , a pressing device for a "Z"-shaped tread plate, comprising a frame, an upper roller 1, two lower rollers 2, a first power device, a second power device, a third power device, a lifting device, and a mold;

[0024] The two lower rollers 2 are horizontally arranged in parallel on the frame and are rotatably connected to the frame; the upper roller 1 is arranged in parallel with the two lower rollers 2 above the two lower rollers 2, and the central axis of the upper roller 1 and the middle line of the two lower rollers 2 are located in the same vertical plane; the upper roller 1 is connected to the frame through a lifting device, and the upper roller 1 is rotatably connected to the lifting device; the first power device is connected to the two lower rollers 2; the second power device is connected to the upper roller 1; the third power device is connected to the lifting device; it should be noted that the frame, the upper roller 1, the two lower rollers 2, the first power device, the second power device, the third power device, and the lifting device in this device form a whole, and its specific connection relationship and structure are the same as or similar to those of the existing three-roll plate bending machine, so the present utility model will not be introduced in too much detail.

[0025] The mold is horizontally movably arranged between the upper roller 1 and the lower roller 2, and the mold comprises a bottom plate 3, a first cushion strip 7, and a second cushion strip 8; the first cushion strip 7 and the second cushion strip 8 have the same height, the first cushion strip 7 and the second cushion strip 8 are arranged at intervals on the upper surface of the bottom plate 3 and are both perpendicular to the central axis of the upper roller 1, the interval distance between the first cushion strip 7 and the second cushion strip 8 is less than the length of the upper roller 1, and the upper surfaces of the first cushion strip 7 and the second cushion strip 8 are in contact with the upper roller 1; the bottom plate 3 is a hard plate, and the lower surface of the bottom plate 3 is in contact with the two lower rollers 2; first fixing grooves 4 and second fixing grooves 5 are arranged at positions between the first cushion strip 7 and the second cushion strip 8 on the bottom plate 3, the first fixing grooves 4 and the second fixing grooves 5 are both parallel to the central axis of the upper roller 1 and are respectively located on both sides of the upper roller 1, the top heights of the first fixing grooves 4 and the second fixing grooves 5 are the same, and the height difference between the top of the first fixing grooves 4 and the second fixing grooves 5 and the top of the first cushion strip 7 and the second cushion strip 8 is the same as the thickness of the "Z"-shaped tread plate.

[0026] In an embodiment of the present utility model, the tooling further includes a third cushion bar 9, a fourth cushion bar 10, a fifth cushion bar 11, and a sixth cushion bar 12 that are disposed between the first cushion bar 7 and the second cushion bar 8 and are perpendicular to both of them. The third cushion bar 9, the fourth cushion bar 10, the fifth cushion bar 11, and the sixth cushion bar 12 have the same height, and are all smaller than the heights of the first cushion bar 7 and the second cushion bar 8. The difference between the heights of the first cushion bar 7 and the second cushion bar 8 and the heights of the third cushion bar 9, the fourth cushion bar 10, the fifth cushion bar 11, and the sixth cushion bar 12 is equal to the thickness of the "Z"-shaped tread plate. The third cushion bar 9 and the fourth cushion bar 10 are spaced apart, and a first fixing groove 4 is formed therebetween. The fifth cushion bar 11 and the sixth cushion bar 12 are spaced apart, and a second fixing groove 5 is formed therebetween.

[0027] In an embodiment of the present utility model, the bottom plate 3 is made of steel plate. The first cushion bar 7, the second cushion bar 8, the third cushion bar 9, the fourth cushion bar 10, the fifth cushion bar 11, and the sixth cushion bar 12 are all made of channel steel.

[0028] In an embodiment of the present utility model, the spacing distance between the two lower rollers 2 is d, and 0 < d < the diameter of the upper roller 1, which can avoid the blank 6 bending upward during pressing due to the excessive distance between the two lower rollers 2.

[0029] In an embodiment of the present utility model, the distance from the first fixing groove 4 to the end of the bottom plate 3 closest to it (refer to the appendix Figure 2 , this end is the left edge of the bottom plate) is greater than the distance between the centers of the two lower rollers 2. The distance from the second fixing groove 5 to the end of the bottom plate 3 closest to it (refer to the appendix Figure 2 , this end is the right edge of the bottom plate) is greater than the distance between the centers of the two lower rollers 2, which can ensure that the bottom plate 3 does not come off one of the lower rollers 2 during the pressing process.

[0030] In an embodiment of the present utility model, the widths of the first fixing groove 4 and the second fixing groove 5 are both 5 - 10 mm, and the depths are both ≥ 50 mm, which can ensure meeting the fixing and pressing requirements of the "Z"-shaped tread plate.

[0031] Refer to the appendix Figures 4-6, when the pressing device for the "Z"-shaped tread plate disclosed by the present utility model is in use, after adjusting the bottom plate 3 to a proper position, the upper roller 1 is lowered by adjusting the lifting device to press the first cushion strip 7 and the second cushion strip 8, and then one end of the tread plate blank 6 to be pressed is inserted into the first fixing groove 4 or the second fixing groove 5, so that the bottom end of the blank 6 is fixedly arranged vertically on the bottom plate 3. Then, the two lower rollers 2 are driven to rotate by the first power device, and at the same time, the upper roller 1 is driven to rotate in a direction opposite to that of the lower rollers 2 by the second power device. The lower rollers 2 drive the bottom plate 3 to move relatively, so that the blank 6 gradually approaches the upper roller 1 until the part of the blank 6 outside the first fixing groove 4 is flattened. Then, the first motor and the second motor are controlled to make the upper roller 1 and the lower rollers 2 rotate in opposite directions until the position at the start of the return operation is reached, and the blank 6 is taken out, thus completing the pressing of the first 90° bend. The long side of the blank 6 after the first pressing is inserted into the first fixing groove 4 or the second fixing groove 5, with the bend after the first pressing facing the direction where the upper roller 1 is located, and the above pressing operation is repeated until the second 90° bend is pressed. At this time, the pressing of a "Z"-shaped tread plate is completed. Since there is a thickness difference between the tops of the first and second fixing grooves 5 and the tops of the first and second cushion strips (i.e., the bottom of the upper roller 1) in this device and it is exactly the same as the thickness of the blank 6, when the blank 6 is flattened, it just fits into the gap between the top of the first fixing groove 4 or the second fixing groove 5 and the upper roller 1. Therefore, the top thickness of the mold does not increase during the whole pressing process, and the pressed mold does not block the rotation of the upper roller 1, and a good pressing effect can be ensured. In addition, two fixing grooves are provided in this device, and the blanks can be inserted alternately for pressing at the same time, improving the production efficiency. This device has a simple structure, easy-to-obtain materials, is easy to manufacture, has simple operation, high processing efficiency, saves time and effort, has a beautiful shape and is easy to promote. It can be applied to "Z"-shaped tread plates with different ladder widths and can be reused.

[0032] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "vertical", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0033] Unless otherwise clearly specified and defined, the terms "set" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0034] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pressing device for a "Z"-shaped tread plate, characterized in that: It includes a frame, an upper roller, two lower rollers, a first power device, a second power device, a third power device, a lifting device, and a tire; The two lower rollers are arranged on the frame in parallel and at intervals, and are rotatably connected to the frame; the upper roller is parallel to the two lower rollers and is arranged at a central position above the two lower rollers; the upper roller is connected to the frame through a lifting device, and the upper roller is rotatably connected to the lifting device; the first power device is connected to the two lower rollers; the second power device is connected to the upper roller; and the third power device is connected to the lifting device; The jig is horizontally movably arranged between the upper roller and the lower roller, and the jig comprises a bottom plate, a first cushion strip, and a second cushion strip; The first pad and the second pad have the same height, are spaced apart on the upper surface of the bottom plate, and are both perpendicular to the central axis of the upper roller, the spacing between the first pad and the second pad is smaller than the length of the upper roller, and the upper surfaces of the first pad and the second pad are in contact with the upper roller; The bottom plate is a hard plate, and the lower surface of the bottom plate is in contact with the two lower rollers; the first fixing groove and the second fixing groove are provided on the bottom plate between the first pad and the second pad, the first fixing groove and the second fixing groove are parallel to the central axis of the upper roller, and are respectively located on both sides of the upper roller, the tops of the first fixing groove and the second fixing groove are at the same height, and the height difference between the tops of the first pad and the second pad is the same as the thickness of the "Z"-shaped tread.

2. A "Z"-shaped step plate pressing device according to claim 1, characterized in that: The tire also includes a third cushion bar, a fourth cushion bar, a fifth cushion bar and a sixth cushion bar which are arranged between the first cushion bar and the second cushion bar and are perpendicular to the first cushion bar and the second cushion bar. The third pad, the fourth pad, the fifth pad and the sixth pad are of the same height and are all smaller than the first pad and the second pad; the difference between the height of the first pad and the second pad and the height of the third pad, the fourth pad, the fifth pad and the sixth pad is equal to the thickness of the "Z"-shaped tread; The third gasket strip and the fourth gasket strip are arranged at intervals, and the first fixing groove is formed therebetween; the fifth gasket strip and the sixth gasket strip are arranged at intervals, and the second fixing groove is formed therebetween.

3. The pressing device for a "Z"-shaped tread plate according to claim 1 is characterized in that: The spacing distance between the two lower rollers is d, 0<d<the diameter of the upper roller.

4. The pressing device for a "Z"-shaped tread plate according to claim 1, characterized in that: The distance from the first fixed groove to the end of the bottom plate adjacent thereto is greater than the distance between the centers of the two lower rollers, and the distance from the second fixed groove to the end of the bottom plate adjacent thereto is greater than the distance between the centers of the two lower rollers.

5. The pressing device for a "Z"-shaped tread plate according to any one of claims 1 to 4, characterized in that: The width of the first fixing groove and the second fixing groove are both 5-10 mm, and the depth is both ≥50 mm.

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