CN111618135B - Jig for bending equipment and assisting bending equipment in bending plate materials - Google Patents

Abstract

The invention relates to a jig for bending equipment and assisting the equipment to bend a plate material, which comprises: a support assembly comprising a bearing surface capable of partially supporting the sheet material, the bearing surface having a support edge for supporting a desired fold of the sheet material; and the positioning mechanisms comprise telescopic components arranged in the bearing assembly and movable bolts arranged on the telescopic components. When the plurality of telescopic components drive the corresponding movable bolts to be respectively inserted into the plurality of first holes of the plate, the expected folded edges of the plate are forced to be aligned with the supporting edges of the bearing surface, so that the plate can be bent by bending equipment and the actual folded edges generated in the bending process of the plate are limited to be overlapped with the expected folded edges. The jig can solve the problem that reliable restraint is difficult to be carried out on the positions of the plates, so that the risk that the plates are scratched in the bending process and the risk that the actual folded edges of the plates are not overlapped with the expected folded edges can be effectively reduced, and the rejection rate of the plates after forming is greatly reduced.

Description

A jig used for press bending equipment and assisting it in implementing sheet metal press bending

Technical Field

The present invention relates to the field of mechanical processing technology, and in particular to a jig used for press bending equipment and assisting the equipment in performing sheet metal press bending.

Background technique

In the manufacturing process of the washing machine shell, it is necessary to use a jig with a clamping mechanism to position the sheet material, and then use a bending device to bend the sheet material to form it into a partial structure of the washing machine shell. However, since the clamping mechanism of the jig relies on static friction to stop the sheet material, the sheet material is prone to slide relative to the device when being bent by the bending device, making it easy for the actual folding edge of the sheet material to deviate from the expected folding edge during the bending process, increasing the scrap rate of the washing machine shell. In addition, since the clamping mechanism of the jig will make large-area contact with the surface of the sheet material during clamping, it is also easy to scratch the surface of the sheet material after sliding, and once again increase the scrap rate of the washing machine shell.

Summary of the invention

In order to solve all or part of the above problems, the purpose of the present invention is to provide a jig for a press bending device and to assist it in implementing sheet bending, thereby solving the problem that it is difficult to reliably constrain the position of the sheet. This can effectively reduce the risk of the sheet being scratched during the bending process, as well as the risk of the actual folding edge of the sheet not coinciding with the expected folding edge, and greatly reduce the scrap rate of the sheet after forming.

The present invention provides a jig used for a press bending device and assisting it in implementing sheet bending, which includes: a supporting assembly, including a bearing surface that can partially support the sheet, the bearing surface having a supporting edge for supporting the expected folding edge of the sheet; a plurality of positioning mechanisms, which include a telescopic component arranged in the supporting assembly and a movable latch arranged on the telescopic component; wherein, when the plurality of telescopic components drive the corresponding movable latches to be respectively inserted into the plurality of first holes of the sheet, the expected folding edge of the sheet is forced to be aligned with the supporting edge of the bearing surface, so that the sheet can be bent by the press bending device and the actual folding edge generated by the sheet during the bending process is limited from overlapping with the expected folding edge.

It can be known from the above technical scheme that the jig used for press bending equipment and assisting it in implementing sheet bending of the present invention mainly includes a supporting assembly and a positioning mechanism arranged on the supporting assembly, which can drive the corresponding multiple movable pins to be inserted into the first holes on the sheet through multiple telescopic parts, so that the expected folding edge of the sheet is forced to align with the supporting edge of the load-bearing surface, thereby limiting the actual folding edge generated by the sheet during the bending process from coinciding with the expected folding edge. In this way, the sheet can be better prevented from sliding relative to the press bending equipment when being bent by the press bending equipment, thereby effectively reducing the risk of the sheet being scratched during the bending process, as well as the risk of the actual folding edge of the sheet not coinciding with the expected folding edge, and greatly reducing the scrap rate of the sheet after forming. The jig used for press bending equipment and assisting it in implementing sheet bending of the present invention has a simple structure, is easy to manufacture, is safe and reliable to use, and is easy to implement, promote and apply.

BRIEF DESCRIPTION OF THE DRAWINGS

The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. In the drawings:

FIG1 schematically shows a sheet material and a jig according to an embodiment of the present invention;

FIG2 is a top view of a fixture according to an embodiment of the present invention;

FIG. 3 is a front view of a fixture according to an embodiment of the present invention.

In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

FIG. 1 schematically shows a sheet and a jig of an embodiment of the present invention, FIG. 2 is a top view of the jig of an embodiment of the present invention, and FIG. 3 is a front view of the jig of an embodiment of the present invention. As shown in FIG. 1 to FIG. 3, the jig 100 is used in a bending device and can assist it in bending a sheet 200, for example, bending the sheet 200 into an L-shaped or U-shaped structure. In this embodiment, the sheet 200 is selected as a material for making a washing machine shell, and has an expected folding edge L1, a second hole and a plurality of first holes, and the aperture of the second hole is larger than the aperture of the first hole. Among them, the expected folding edge L1 is preferably a line segment drawn on the body of the sheet 200 as required by a writing tool or a hard object. However, under special requirements, the expected folding edge L1 may not be displayed on the body of the sheet 200 to avoid its exposure affecting the product appearance or production efficiency. It only represents the ideal position where people expect the actual bending to occur on the sheet 200.

As shown in Figures 2 and 3, the jig 100 includes a supporting assembly 1 and a plurality of positioning mechanisms 2. The supporting assembly 1 can be mounted on a workbench of a press-bending device, and includes a bearing surface that can partially support a sheet material 200, and the bearing surface has a supporting edge 13 for supporting an expected folding edge L1 of the sheet material 200. The positioning mechanism 2 includes a telescopic component 21 disposed in the supporting assembly 1 and a movable latch 22 disposed on the telescopic component 21. The telescopic component 21 is preferably an environmentally friendly, energy-saving and low-cost cylinder (referred to as the first cylinder to avoid weight), but is not limited thereto, and can also be selected as a drive mechanism capable of linear reciprocating motion, such as an oil cylinder and a linear motor. When multiple telescopic components 21 drive the corresponding movable pins 22 to be inserted into multiple first holes of the sheet 200 respectively, the expected folding edge L1 of the sheet 200 is forced to align with the supporting edge 13 of the load-bearing surface, so that the sheet 200 can be bent by the press bending equipment and the actual folding edge generated by the sheet 200 during the bending process is limited to coincide with the expected folding edge L1, see Figure 1 for details.

The jig 100 of the present invention, which is used for a press-bending device and assists it in implementing the press-bending of a sheet 200, mainly includes a supporting component 1 and a positioning mechanism 2 arranged on the supporting component 1, which can drive the corresponding multiple movable pins 22 to be inserted into the first holes on the sheet 200 respectively through multiple telescopic components 21, so that the expected folding edge L1 of the sheet 200 is forced to align with the supporting edge 13 of the load-bearing surface, thereby limiting the actual folding edge generated by the sheet 200 during the bending process from overlapping with the expected folding edge L1. In this way, the sheet 200 can be better prevented from sliding relative to the press-bending device when being bent by the press-bending device, thereby reducing the risk of the sheet 200 being scratched during the bending process, as well as the risk of the actual folding edge of the sheet 200 not overlapping with the expected folding edge L1, and greatly reducing the scrap rate of the sheet 200 after forming.

In this embodiment, the support assembly 1 includes a base plate 11 and a first boss 12a and a second boss 12b provided on the base plate 11. The bearing surface is at least partially formed on the first boss 12a and the second boss 12b, that is, the bearing surface is mainly composed of a surface 14a and a surface 14b. The supporting edge 13 is formed on the first boss 12a and/or the second boss 12b. In this embodiment, the number of the supporting edges 13 may be one or two. When the number of the supporting edges 13 is one, it may be formed on the first boss 12a or the second boss 12b to ensure that the sheet material 200 can form an L-shaped structure after being pressed and bent; when the number of the supporting edges 13 is two, the two supporting edges 13 are respectively formed on the first boss 12a and the second boss 12b, and are the farthest opposite sides on the first boss 12a and the second boss 12b, to ensure that the sheet material 200 can form a U-shaped structure after being pressed and bent. In this embodiment, a portion of the positioning mechanism 2 is embedded in the first boss 12a, and another portion of the positioning mechanism 2 is embedded in the second boss 12b, so that the movable latch 22 can not only extend out of the first boss 12a or the second boss 12b, but also completely retract into the first boss 12a or the second boss 12b.

In this embodiment, the fixture 100 also includes a first correcting member 31 and a second correcting member 32 respectively provided on the first boss 12a and the second boss 12b, and a first driving mechanism 4a and a second driving mechanism 4b provided on the base plate 11 and capable of driving the first boss 12a and the second boss 12b respectively. The first boss 12a and the second boss 12b can be slidably provided on the base plate 11, for example, the first boss 12a or the second boss 12b is provided on the base plate 11 through a slide rail, so that the first boss 12a and the second boss 12b can move toward and away from each other under the drive of the first driving mechanism 4a and the second driving mechanism 4b. When the first boss 12a and the second boss 12b move toward each other under the drive of the first drive mechanism 4a and the second drive mechanism 4b, the first correcting member 31 and the second correcting member 32 are forced to move relative to each other to allow the sheet material 200 to pass through the second hole and be sleeved on the first correcting member 31 and the second correcting member 32. When the first boss 12a and the second boss 12b move away from each other under the drive of the first drive mechanism 4a and the second drive mechanism 4b, the first correcting member 31 and the second correcting member 32 are forced to move away from each other to symmetrically apply pressure to the hole edge of the second hole and force the sheet material 200 to move relative to the supporting component 1, thereby aligning the first hole of the sheet material 200 with the movable latch 22 of the positioning mechanism 2, so that the movable latch 22 is more easily inserted into the first hole. Preferably, the first drive mechanism 4a and the second drive mechanism 4b are preferably environmentally friendly, energy-saving and low-cost cylinders (referred to as second cylinders to avoid weight), but are not limited thereto. They can also be selected as drive mechanisms capable of linear reciprocating motion such as oil cylinders and linear motors.

In this embodiment, the first correcting member 31 includes a base 31a sunken into the first boss 12a and two positioning protrusions 31b disposed on the base 31a and spaced apart. The second correcting member 32 includes a base 32a sunken into the second boss 12b and two positioning protrusions 32b disposed on the base 32a and spaced apart. The two positioning protrusions 31b and the two positioning protrusions 32b can be separately pressed against the edge of the second hole when the first correcting member 31 and the second correcting member 32 move to the maximum distance between the two, so that the first hole of the sheet material 200 can be aligned with the movable latch 22 of the positioning mechanism 2, so that the movable latch 22 can be inserted into the first hole of the sheet material 200.

In this embodiment, the jig 100 further includes a stopper 5 disposed on the bottom plate 11. When the sheet material 200 is transported to the bearing surface on the supporting assembly 1, the stopper 5 can block the sheet material 200 and guide it to be sleeved on the first correcting member 31 and the second correcting member 32 after the sheet material 200 is released, thereby reducing the dependence on manual labor. The stopper 5 is preferably a rectangular stopper higher than the first boss 12a and the second boss 12b.

In this embodiment, the jig 100 further includes a clamping mechanism provided on the bottom plate 11. The clamping mechanism is configured to abut against the opposite side edges of the sheet material 200 and clamp the sheet material 200, thereby preventing the edge of the sheet material 200 from accidentally tilting up during the bending process, and more safely avoiding the risk of the actual folding edge deviating from the expected folding edge L1. In order to save costs and improve response speed, in a preferred embodiment, the clamping mechanism may include at least one pair of third cylinders 61 provided on the bottom plate 11 and arranged symmetrically, and at least one pair of third cylinders 61 can clamp the sheet material 200 placed between the third cylinders 61.

Next, the method of using the jig 100 according to the embodiment of the present invention is introduced. First, the sheet material 200 transported to the carrying surface can be stopped by the stopper 5, fall down and sleeve on the first correcting member 31 and the second correcting member 32, and secondly, the first boss 12a and the second boss 12b on the bottom plate 11 can move toward each other under the drive of the first driving mechanism 4a and the second driving mechanism 4b, and force the first correcting member 31 and the second correcting member 32 to move toward each other, so as to facilitate the sleeve of the second hole on the sheet material 200 on the first correcting member 31 and the second correcting member 32. The first boss 12a and the second boss 12b can also move in opposite directions under the drive of the first driving mechanism 4a and the second driving mechanism 4b, and force the first correcting member 31 and the second correcting member 32 to move in opposite directions, thereby symmetrically applying pressure to the edge of the second hole, forcing the sheet 200 to move relative to the supporting component 1, so that each positioning protrusion presses on different areas of the edge of the second hole, forming a bulging effect, and urging the first hole of the sheet 200 to align with the movable latch 22 of the positioning mechanism 2. Then, the edge of the sheet 200 is clamped by the clamping mechanism, and multiple telescopic components 21 drive the corresponding movable latches 22 to be inserted into multiple first holes of the sheet 200 respectively, so as to ensure that the expected folding edge L1 of the sheet 200 is aligned with the support edge 13 of the load-bearing surface, so that the sheet 200 can be bent by the press bending equipment and the actual folding edge generated by the sheet 200 during the bending process is limited to overlap with the expected folding edge L1.

In summary, the jig solves the problem that it is difficult to reliably constrain the position of the sheet 200, thereby reducing the risk of the sheet 200 being scratched during the bending process, as well as the risk that the actual folding edge of the sheet 200 does not overlap with the expected folding edge L1, and significantly reduces the scrap rate of the sheet 200 after forming.

In the description of the present application, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Unless otherwise clearly specified and limited, the term "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral whole; 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 internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

The above is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician in the field can easily make changes or variations within the technical scope disclosed in the present invention, and such changes or variations should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims. As long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims (8)

1. A jig for a press bending apparatus and assisting in performing press bending of a sheet material, wherein the sheet material has a desired fold and a plurality of first holes, comprising:

a support assembly comprising a bearing surface capable of partially supporting the sheet material, the bearing surface having a support edge for supporting a desired fold of the sheet material;

a plurality of positioning mechanisms including telescoping members disposed within the support assembly and movable pins disposed on the telescoping members;

when the telescopic parts drive the corresponding movable bolts to be respectively inserted into the first holes of the plate, the expected folded edges of the plate are forced to be aligned with the supporting edges of the bearing surfaces, so that the plate can be bent by the bending equipment and the actual folded edges generated in the bending process of the plate are limited to coincide with the expected folded edges;

The bearing assembly comprises a base plate and a first boss and a second boss arranged on the base plate, wherein the bearing surface is at least partially formed on the first boss and the second boss, so that the supporting edge is formed on the first boss or the second boss;

The sheet metal further comprises a second hole with a larger diameter than the first hole, the jig further comprises a first correcting member and a second correcting member which are respectively arranged on the first boss and the second boss, and a first driving mechanism and a second driving mechanism which are respectively arranged on the bottom plate and can drive the first boss and the second boss, the first boss and the second boss are slidably arranged on the bottom plate, the first boss and the second boss can be driven by the first driving mechanism and the second driving mechanism to do opposite movement, the first correcting member and the second correcting member are forced to do relative movement, so that the sheet metal is permitted to be sleeved on the first correcting member and the second correcting member through the second hole, the first boss and the second boss can be driven by the first driving mechanism and the second driving mechanism to do opposite movement, and the first correcting member and the second correcting member are forced to do opposite movement so as to support the hole edge of the second hole, the sheet metal is forced to symmetrically exert pressure on the first correcting member and the second correcting member and the plug pin to move in alignment with the movable assembly;

one part of the positioning mechanism is embedded in the first boss, and the other part of the positioning mechanism is embedded in the second boss.

2. The jig of claim 1, wherein the telescoping member is a first cylinder.

3. The jig according to claim 1 or 2, wherein the first driving mechanism and the second driving mechanism are both second cylinders.

4. The jig according to claim 1 or 2, wherein the first and second correcting members each comprise a base portion recessed on the first or second boss and two positioning projections provided on the base portion and arranged at intervals, wherein each of the positioning projections is capable of being separately pressed against the hole edge of the second hole when the first and second correcting members are moved to the maximum distance therebetween.

5. The jig according to claim 1 or 2, further comprising a stop member provided on the base plate and higher than the bearing surface, the stop member being for blocking the sheet material in the transported state and guiding it to fit over the first and second correction members after being released.

6. The jig according to claim 1 or 2, further comprising a clamping mechanism provided on the base plate, the clamping mechanism being capable of abutting opposite sides of a sheet material and clamping the sheet material.

7. The jig of claim 6, wherein the clamping mechanism comprises at least one pair of third cylinders disposed on the base plate and symmetrically arranged.

8. A jig according to claim 1 or 2, wherein the sheet material is a material from which the casing of the washing machine is made.