CN112333919A

CN112333919A - Bending tool

Info

Publication number: CN112333919A
Application number: CN202011205100.XA
Authority: CN
Inventors: 张鸽; 赵江涛
Original assignee: Luxshare Intelligent Manufacture Zhejiang Co Ltd
Current assignee: Luxshare Intelligent Manufacture Zhejiang Co Ltd
Priority date: 2020-11-02
Filing date: 2020-11-02
Publication date: 2021-02-05
Anticipated expiration: 2040-11-02
Also published as: CN112333919B

Abstract

The embodiment of the invention provides a bending tool, wherein a product is fixed through a product fixing unit, and a first bending head is matched with a shifting rod, so that a first bending angle of the product is bent back around the shifting rod; and the second bending head is matched with the product fixing unit, so that the second bending angle of the product is bent towards the inside of the bending angle groove. The first bevel and the second bevel of the product are bent by the bending tool, so that the bending precision and the machining efficiency of the product can be improved, and the production cost of the product can be reduced.

Description

Bending tool

Technical Field

The invention relates to the technical field of mechanical equipment, in particular to a bending tool.

Background

At present, Flexible Printed Circuit (FPC) is used in many 3C consumer electronics products. The internal copper-clad circuit board is made of flexible materials and insulating base materials, has the characteristics of high wiring density, light weight, thin thickness, good bending property and the like, and is widely used. Generally, when a flexible circuit board is used, the flexible circuit board is bent so as to have a certain shape and layout. However, the conventional machining method only involves manual bending, and thus machining accuracy and machining efficiency are very low. Therefore, it is necessary to design a bending tool to improve the machining accuracy and the machining efficiency of the product.

Disclosure of Invention

In view of the above, the present invention provides a bending tool, which can improve the precision and the processing efficiency of a product by using the bending tool to process a flexible circuit board.

The embodiment of the invention provides a bending tool, which comprises:

a product fixing unit having a corner groove;

a deflector rod;

the driving lever linkage frame is connected with the driving lever and movably connected with the product fixing unit so that the driving lever can move to the upper part of the angle folding groove; and

the bending unit comprises a first bending head and a second bending head;

the first bending head can be close to the deflector rod along a first direction, so that a first bending angle of the product can be bent back around the deflector rod;

the second bending head can be close to the upper part of the corner groove along the first direction, so that the second corner of the product is bent towards the inside of the corner groove.

Preferably, the bending tool further comprises: the product fixing unit is installed on the bottom plate, and the first bending head and the second bending head are movably connected with the bottom plate respectively.

Preferably, the bevel groove has a limiting wall extending in a second direction, and the second bending head can bend the second bevel of the product along the contour of the limiting wall to be attached to the limiting wall.

Preferably, the bending tool further comprises:

the slider is arranged along a first direction, the slider is respectively connected with the first bending head and the second bending head, the slider is provided with a containing cavity, the tail end of the second bending head penetrates through the containing cavity, the tail end of the second bending head is abutted against the cavity wall of the containing cavity through an elastic piece, and the head end of the second bending head is abutted against the limiting wall.

Preferably, the bending tool further comprises:

the first sliding rail is arranged along a first direction and is connected with the bottom plate;

the first sliding plate is connected with the first sliding rail in a sliding manner;

the second sliding rail is arranged along a second direction and is connected with the side surface of the first sliding plate;

the sliding block is connected with the second sliding rail in a sliding mode;

wherein the first direction and the second direction are substantially perpendicular.

Preferably, the bending tool further comprises:

a first handle;

the first track board is arranged on one side of the sliding block and fixedly connected with the bottom board, the first track board is provided with a first limiting hole, the first handle penetrates through the first limiting hole and is fixedly connected with the sliding block, and the first handle can drive the sliding block to move along the shape contour of the first limiting hole.

Preferably, the shape profile of the first limiting hole comprises:

a first section extending in a first direction;

a second section in communication with the first section and extending in a second direction;

and a third section, which is communicated with the second section and extends along the first direction.

Preferably, the bending tool further comprises:

the third sliding rail is arranged along the first direction and is fixedly connected with the bottom plate;

the bottom end of the second sliding plate is connected with the third sliding rail in a sliding manner, the top end of the second sliding plate is connected with the deflector rod linkage frame, and the deflector rod linkage frame is connected with the product fixing unit in a sliding manner;

and the second handle is connected with the second sliding plate.

Preferably, the method further comprises the following steps: the second track board is arranged on one side of the second sliding plate and fixedly connected with the bottom plate, the second track board is provided with a second limiting hole, the second handle penetrates through the second limiting block hole and is fixedly connected with the second sliding plate, and the second handle can drive the second sliding plate to move along the shape and the contour of the second limiting hole.

Preferably, the product fixing unit includes:

the corner groove is positioned on the fixing unit body;

and the cover plate is pivoted with the fixed unit body.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

FIG. 1 is a schematic view of a product to be bent according to an embodiment of the present invention;

FIG. 2 is a schematic view of a bent product according to an embodiment of the present invention;

FIG. 3 is a schematic view of a bending tool of an embodiment of the present invention;

FIG. 4 is a schematic view of a fixing unit body of a bending tool of an embodiment of the present invention;

FIG. 5 is a schematic view of a product holding unit and a toggle lever of a bending tool in accordance with an embodiment of the present invention;

FIG. 6 is a schematic diagram of a portion of a bending tool in accordance with an embodiment of the present invention;

FIG. 7 is a schematic view of a first slide plate of a bending tool of an embodiment of the present invention;

FIG. 8 is a schematic view of a slider, a first bending head, and a second bending head of a bending tool in accordance with an embodiment of the present invention;

FIG. 9 is a cross-sectional view taken along line AA in FIG. 8;

FIG. 10 is a schematic view of a first track pad of a bending tool in accordance with an embodiment of the present invention.

Description of reference numerals:

a, preparing a product; x a first direction; y a second direction; z a third direction; 1, a first bevel; 2, second folding angle; 10 a product fixing unit; 11 fixing the unit body; 111 a product tank; 112 corner groove; 113 a fixed surface; 114 a concave surface; 115 a retaining wall; 116 bending round corners; 117 a cover plate; 118 a magnet; 119 a connecting piece; 120 a handle; 20, a deflector rod; 21 a deflector rod linkage frame; 22 a third slide rail; 23 a second slide plate; 24 a second handle; 25 a second track pad; 26 a second limiting hole; 27 cushion blocks; 30 bending units; 31 a first bending head; 311 vertical planes; 312 inclined plane; 313 an elastic member; 32 a second bending head; 33, a sliding block; 34 a first slide rail; 35 a first slide plate; 351 a horizontal portion; 352 vertical section; 36 a second slide rail; 37 a first handle; 38 a first track pad; 39 a first limit hole; 391 a first stage; 392 a second section; 393 a third stage; 40 a base plate.

Detailed Description

The present invention will be described below based on examples, but the present invention is not limited to only these examples. In the following detailed description of the present invention, certain specific details are set forth. It will be apparent to one skilled in the art that the present invention may be practiced without these specific details. Well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the present invention.

Further, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

Unless the context clearly requires otherwise, throughout this application, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including, but not limited to".

In the description of the embodiments of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are intended to be inclusive and mean that, for example, they may be fixedly connected or detachably connected or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

When an element or layer is referred to as being "on," "engaged to," "connected to" or "coupled to" another element or layer, it may be directly on, engaged, connected or coupled to the other element or layer or intervening elements or layers may be present. In contrast, when an element is referred to as being "directly on," "directly engaged to," "directly connected to" or "directly coupled to" another element or layer, there may be no intervening elements or layers present. Other words used to describe the relationship between elements should be interpreted in a similar manner. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Spatially relative terms, such as "inner," "outer," "below," "lower," "above," "upper," and the like, are used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the example term "below" can encompass both an orientation of above and below. The device may be otherwise oriented and the spatially relative descriptors used herein interpreted accordingly.

In the traditional flexible circuit board bending process, an operator sucks and places the flexible circuit board on a jig table by using a suction pen, and manually bends the flexible circuit board by using a pressing pen. Because the product size is less relatively, the operator bare-handed operation is difficult to ensure the required precision, has the error in the size, and bend radius also can't guarantee simultaneously, leads to bend radius undersize very easily and makes the flexible circuit board cross the book, and the circuit board breaks. The machining precision and the machining efficiency of the product are low, and the production and manufacturing cost is increased.

FIG. 1 is a schematic view of a product to be bent according to an embodiment of the present invention. Fig. 2 is a schematic view of a bent product according to an embodiment of the present invention. As shown in fig. 1 and 2, a product a is irregular, and in particular, the product a is a flexible circuit board including a first corner 1 and a second corner 2. In the bending process, the first bending angle 1 is bent back by 180 degrees, and the second bending angle 2 is bent downwards by 90 degrees.

FIG. 3 is a schematic view of a bending tool in accordance with an embodiment of the present invention. As shown in fig. 3, in order to improve processing efficiency and processing accuracy, an embodiment of the present invention provides a bending tool, including: the product fixing unit 10, the shift lever 20, the shift lever linkage frame 21, the bending unit 30 and the bottom plate 40.

Fig. 4 is a schematic view of a fixing unit body of a bending tool according to an embodiment of the present invention. Fig. 5 is a schematic view of a product fixing unit and a shift lever of the bending tool according to the embodiment of the present invention. As shown in fig. 4 and 5, the product fixing unit 10 has a corner groove 112. Specifically, the product fixing unit 10 includes: a fixed unit body 11 and a cover plate 117. The corner groove 112 is located on the fixed unit body 11. Specifically, the fixing unit body 11 includes a fixing surface 113 and a recessed surface 114, the recessed surface 114 is located outside the fixing surface 113, and the position of the fixing surface 113 is higher than that of the recessed surface 114. The fixing surface 113 is provided with a product groove 111, the product groove 111 is matched with the product a in shape, and after the product a before bending is placed on the product groove 111, the product a is basically fixed in the horizontal direction. Meanwhile, the first and

second beads

1 and 2 are suspended outside the fixing surface 113, that is, the first and

second beads

1 and 2 are suspended above the concave surface 114. The dog-ear groove 112 includes a recessed surface 114 and a stopper wall 115. The distance between the fixing surface 113 and the recess surface 114 in the vertical direction is greater than the dimension of the first and

second beads

1 and 2 in the first direction, that is, the depth of the bead groove 112 is greater than the dimension of the first and

second beads

1 and 2 in the first direction x. Thereby, a sufficient space is reserved for the first folding angle 1 and the second folding angle 2 to be folded downward.

The cover plate 117 is positioned above the fixing unit body 11, a space for accommodating a product is formed between the cover plate 117 and the fixing unit body 11, the product is placed in the space, and the product is fixed by cooperation of the cover plate 117 and the fixing unit body 11. The cover plate 117 and the fixing unit body 11 are fixed by the magnet 118 to allow stable engagement between the cover plate 117 and the fixing unit body 11. Specifically, the magnet 118 may be provided on the inner side of the cover plate 117 and the fixing surface 113 of the fixing unit body 11.

In an alternative implementation, the cover plate 117 is pivotally connected to the fixed unit body 11. In the present embodiment, a connecting member 119 is provided at one side of the fixed unit body 11, and the cover plate 117 is coupled to the fixed unit body 11 by being openably and closably coupled to the connecting member 119.

The cover plate 117 is provided with a handle 120 for an operator to manipulate the cover plate 117 and the fixing unit body 11 to be separated or closed.

The lever 20 is movably disposed above the recess surface 114 of the fixed unit body 11. Specifically, when the first bevel 1 is bent, the shift lever 20 is located below a predetermined position of the first bevel 1. The deflector rod 20 is arranged along the second direction y, the deflector rod 20 is a round rod, and the diameter of the deflector rod 20 is determined according to the bending radius of a product. The deflector rod 20 with a certain size can avoid the fracture of the product caused by the over-small bending angle, and the qualification rate of the product is improved.

The shifting rod linkage frame 21 is connected with the shifting rod 20, and the shifting rod linkage frame 21 is movably connected with the product fixing unit 10 so that the shifting rod 20 can move to the upper part of the angle folding groove 112. The driving lever linkage frame 21 is disposed at one side of the product fixing unit 10, and the driving lever 20 is driven by the driving lever linkage frame 21 to move, so that the driving lever 20 is located below a product reservation position during a bending process to bend the first bevel 1. After the bending is completed, the shift lever 20 is separated from the product along the first direction x, so that the product can be taken out along the second direction y.

In the present embodiment, the lever linkage frame 21 is disposed at the left side of the product fixing unit 10, and the lever 20 is driven by the lever linkage frame 21 to move back and forth along the first direction x.

In other alternative implementations, the lever linkage frame 21 may be disposed at other positions of the product fixing unit 10, for example, the lever linkage frame 21 is disposed at the front side of the product fixing unit 10.

In this embodiment, the product fixing unit 10 further includes a spacer 27, and the fixing unit body 11 is fixedly connected to the bottom plate 40 through the spacer 27.

The bending tool further comprises a third slide 22 and a second slide 23. The third slide rail 22 is disposed along the first direction x and is fixedly connected to the bottom plate 40. Specifically, the third slide rail 22 is indirectly connected to the base plate 40 through the spacer 27. The third slide rail 22 is disposed on the upper surface of the pad 27 and on the left side of the product fixing unit 10. The bottom end of the second sliding plate 23 is connected with the third sliding rail 22 in a sliding manner, the top end of the second sliding plate 23 is connected with the driving lever linkage frame 21, and the driving lever linkage frame 21 is connected with the product fixing unit 10 in a sliding manner. The upper surface of the second sliding plate 23 and the recessed surface 114 of the fixed unit body 11 are flush with or higher than the recessed surface 114 fixed to the body. In this embodiment, the upper surface of the second sliding plate 23 is flush with the recessed surface 114 of the fixed unit body 11, and the lever linkage 21 is located on the recessed surface 114 and slides in the first direction x.

A second handle 24 is connected to the second slide plate 23. In the present embodiment, the second handle 24 is disposed along the third direction z and fixedly connected to the front side surface of the second sliding plate 23. The bending tool further comprises a second track plate 25, the second track plate 25 is arranged on one side of the second sliding plate 23 and fixedly connected with the bottom plate 40, the second track plate 25 is provided with a second limiting hole 26, the second handle 24 penetrates through the second limiting hole 26 and is fixedly connected with the second sliding plate 23, and the second handle 24 can drive the second sliding plate 23 to move along the shape and the contour of the second limiting hole 26. In this embodiment, the second track board 25 is connected to the pad 27, and is fixedly connected to the bottom board 40 through the pad 27. The second limiting hole 26 is a strip-shaped hole arranged along the first direction x, and the size of the strip-shaped hole along the second direction y is substantially equal to the diameter of the second handle 24. So as to limit the moving range of the second sliding plate 23 in the vertical direction and the horizontal direction, when the second handle 24 is positioned at the rightmost side of the second limiting hole 26, the shift lever 20 is positioned at a preset position, and the precise positioning of the shift lever 20 is realized through the second limiting hole 26, thereby improving the positioning efficiency and the positioning precision of the shift lever 20. Meanwhile, the second limiting hole 26 can also prevent the shift lever 20 from being not placed below the product reservation position due to the movement of the second sliding plate 23 in the vertical direction, for example, the shift lever 20 is placed above the product, or the shift lever 20 collides with the product, which may result in a reduction in product yield. By providing the second track plate 25, the processing accuracy of the bending tool can be improved.

As shown in fig. 6-10, bending unit 30 includes a first bending head 31, a second bending head 32, a slider 33, a first slide rail 34, a first slide plate 35, a second slide rail 36, a first handle 37, and a track plate. The first bending head 31 and the second bending head 32 are movably connected to the base plate 40, respectively.

The first slide rail 34 is disposed along the first direction x and connected to the base plate 40. The first sliding plate 35 is slidably connected to the first sliding rail 34. And a second slide rail 36 disposed along the second direction y and connected to a side surface of the first slide plate 35. The sliding block 33 is slidably connected with the second sliding rail 36.

Specifically, the first slide rail 34 and the first slide plate 35 constitute a set of slide assemblies that slide along the first direction x. The second slide rail 36 and the slide block 33 constitute a set of slide assemblies that slide along the second direction y. By providing the first slide rail 34, the first slide plate 35 and the second slide rail 36, the slider 33 can be movably connected to the base plate 40 in a manner of being movable in the first direction x and the second direction y. The first slide rail 34, the first slide plate 35, and the second slide rail 36 support the slider 33.

In this embodiment, as shown in fig. 7, the first sliding plate 35 includes a horizontal portion 351 and a vertical portion 352, wherein the bottom of the horizontal portion 351 is slidably connected to the first sliding rail 34, and one side of the vertical portion 352 is fixedly connected to the second sliding rail 36.

As shown in fig. 8 and 9, a sliding block 33 is disposed along a first direction x, the sliding block 33 is connected to the first bending head 31 and the second bending head 32, the sliding block 33 has a receiving cavity, a rear end of the second bending head 32 is inserted into the receiving cavity, a rear end of the second bending head 32 is abutted to a cavity wall of the receiving cavity through an elastic member 313, and a front end of the second bending head 32 is abutted to the limiting wall 115, so that when the first bending angle (1) of the product is bent around the shift lever (20), the first bending head 31 can continue to move along the first direction x under the driving of the sliding block 33, that is, the sliding block 33 presses the elastic member 313 to continue to move in the receiving cavity, and since the front end of the second bending head 32 is abutted to the limiting wall 115, the second bending head 32 does not continue to move, and the elastic member 313 is compressed, until the first bending head 31 bends the first bending angle 1 of the product back around the shifting lever 20. In this embodiment, the elastic member 313 is a spring. The tail end of the second bending head 32 is provided with a limiting protrusion to prevent the second bending head 32 from separating from the accommodating cavity, so that the second bending head 32 moves back and forth in the accommodating cavity. The first bending head 31 and the second bending head 32 are arranged in parallel or substantially in parallel. The tip of the first bending head 31 is closer to the product fixing unit 10.

The first handle 37 is fixedly connected to the slider 33. The first track board 38 is disposed on one side of the sliding block 33 and fixedly connected to the bottom board 40, the first track board 38 has a limiting hole, the first handle 37 penetrates through the limiting hole and is fixedly connected to the sliding block 33, and the first handle 37 can drive the sliding block 33 to move along the shape and contour of the limiting hole.

As shown in fig. 10, the shape profile of the limiting hole includes: a first section 391 extending in a first direction x; a second section 392 in communication with said first section 391 extending in a second direction y; a third section 393, in communication with said second section 392, extending along the first direction x. Specifically, the first section 391 is proximate to the product holding unit 10.

The first bending head 31 can be close to the shift lever 20 along the first direction x, and is matched with the shift lever 20, so that the first bending angle 1 of the product can be bent back around the shift lever 20.

Specifically, the first bending head 31 includes a vertical surface 311 at the trailing end of the first pressing head, and an inclined surface 312 extending obliquely upward from the upper end of the vertical surface 311.

In response to the first handle 237 moving from the top end of the second section 392 of the first position-limiting hole 39 to the bottom end of the second section 392 of the first position-limiting hole 39, the vertical surface 311 contacts the first fold 1 of the product, and bends the first fold 1 of the product a by 90 degrees. In response to the first handle 37 moving from the right side of the first section 391 of the first position limiting hole 39 to the left side of the first section 391 of the first position limiting hole 39, the inclined surface 312 pushes the first bevel 1 to bend back 180 degrees to the first bevel 1.

Promote first dog-ear 1 through inclined plane 312 and can increase at first dog-ear 1 from buckling 90 degrees to buckling 180 degrees in-process first head 31 of buckling and the area of contact of first dog-ear 1, be convenient for promote first dog-ear 1 gradually and buckle, avoid first dog-ear 1 to damage.

The second bending head 32 is capable of cooperating with the product fixing unit 10 along the first direction x, close to the upper side of the bending groove 112, so as to bend the second bending angle 2 of the product towards the inside of the bending groove 112.

The corner groove 112 has a limiting wall 115 extending in the second direction y, the second bending head 32 can bend the second corner 2 of the product along the contour of the limiting wall 115 to be attached to the limiting wall 115, and the main function of the limiting wall 115 is that when the first bending head 31 continues to move in the first direction x, the limiting wall 115 limits the second bending head 32 to continue to move in the first direction x.

The area where the limiting wall 115 and the fixing surface 113 are combined is provided with a bending fillet 116, so that the phenomenon that the product is broken due to the fact that the bending angle is too small can be avoided.

The use method of the bending tool comprises the following steps:

step S101, toggle the second handle 24 to move the toggle lever 20 to the rightmost side.

Step S102, opening the cover plate 117, and placing the product to be bent in the product groove 111.

And step S103, closing the cover plate 117 to fix the product to be bent.

Step S104, the first handle 37 is pulled, so that the first handle 37 moves from the right side to the left side along the first limiting hole 39.

Step S105, the second handle 24 is shifted, so that the shift lever 20 is separated from the bent product.

And step S106, taking out the product.

Specifically, in step S104, when the first handle 37 moves along the third segment 393 of the first position-limiting hole 39 to the upper end of the second segment 392, the first bending head 31 and the second bending head 32 are respectively located above the bending positions of the first bending angle 1 and the second bending angle 2. When the first handle 37 moves from the top end of the second section 392 to the bottom end of the second section 392, the first bending head 31 cooperates with the shift lever 20 to bend the first bending angle 1 by 90 degrees, and the second bending head 32 cooperates with the limiting wall 115 to bend the second bending angle 2 by 90 degrees. When the first handle 37 moves from the bottom end of the second section 392 to the left side of the first section 391, the end of the second bending head 32 abuts against the second bending angle 2 and moves into the accommodating cavity in the sliding block 33 by compressing the elastic member 313 between the second bending head and the sliding block 33; the first bending head 31 continues to move to the left to push the first bending corner 1 to bend back 180 degrees.

The first direction x, the second direction y and the third direction z of the present invention are substantially perpendicular, and "substantially perpendicular" refers to an included angle between each other of substantially 90 degrees, but is not limited to being absolutely 90 degrees.

The embodiment of the invention provides a bending tool, wherein a product is fixed through a product fixing unit 10, and a first bending head 31 is matched with a shifting rod 20, so that a first bending angle 1 of the product is bent back around the shifting rod 20; the second bending head 32 is engaged with the product fixing unit 10 to bend the second corner 2 of the product toward the inside of the corner groove 112. The first bending angle 1 and the second bending angle 2 of the product are bent by adopting the bending tool, so that the bending precision and the processing efficiency of the product can be improved, and the production cost of the product can be reduced.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A bending tool, characterized in that the bending tool comprises:

a product securing unit (10), the product securing unit (10) having a dog-ear slot (112);

a deflector rod (20);

the driving lever linkage frame (21), the driving lever linkage frame (21) is connected with the driving lever (20), and the driving lever linkage frame (21) is movably connected with the product fixing unit (10) so that the driving lever (20) can move to the upper part of the angle folding groove (112); and

a bending unit (30) including a first bending head (31) and a second bending head (32);

the first bending head (31) can be close to the deflector rod (20) along a first direction (x) so as to bend a first bending angle (1) of the product back around the deflector rod (20);

the second bending head (32) can be close to the upper part of the angle bending groove (112) along the first direction (x) so as to bend a second angle (2) of the product towards the inside of the angle bending groove (112).

2. The bending tool of claim 1, further comprising: the product fixing unit (10) is installed on the bottom plate (40), and the first bending head (31) and the second bending head (32) are movably connected with the bottom plate (40) respectively.

3. The bending tool according to claim 2, wherein the corner groove (112) has a stopper wall (115) extending in the second direction (y), and the second bending head (32) can bend the second corner (2) of the product (a) along the contour of the stopper wall (115) to be in contact with the stopper wall (115).

4. The bending tool of claim 3, further comprising:

slider (33), set up along first direction (x), slider (33) respectively with first head (31) of buckling with head (32) are connected to the second, slider (33) have the holding chamber, the tail end of head (32) is buckled to the second wears to locate in the holding chamber, the tail end of head (32) is buckled to the second pass through elastic component (313) with the chamber wall butt in holding chamber, the head end of head (32) is buckled to the second can with spacing wall (115) butt.

5. The bending tool of claim 4, further comprising:

a first slide rail (34) arranged along a first direction (x) and connected to the base plate (40);

a first sliding plate (35) which is connected with the first sliding rail (34) in a sliding way;

the second sliding rail (36) is arranged along a second direction (y) and is connected with the side surface of the first sliding plate (35);

wherein the sliding block (33) is connected with the second sliding rail (36) in a sliding manner;

wherein the first direction (x) and the second direction (y) are substantially perpendicular.

6. The bending tool of claim 5, further comprising:

a first handle (37);

the first track board (38) is arranged on one side of the sliding block (33) and fixedly connected with the bottom board (40), the first track board (38) is provided with a first limiting hole (39), the first handle (37) penetrates through the first limiting hole (39) and is fixedly connected with the sliding block (33), and the first handle (37) can drive the sliding block (33) to move along the shape contour of the first limiting hole (39).

7. Bending tool according to claim 6, wherein the shape profile of the first limit hole (39) comprises:

a first section (391) extending in a first direction (x);

a second section (392) in communication with the first section (391) extending in a second direction (y);

a third section (393) in communication with the second section (392) extending in the first direction (x).

8. The bending tool of claim 2, further comprising:

the third sliding rail (22) is arranged along the first direction (x) and is fixedly connected with the bottom plate (40);

the bottom end of the second sliding plate (23) is connected with the third sliding rail (22) in a sliding manner, the top end of the second sliding plate (23) is connected with the deflector rod linkage frame (21) at the bottom end of the second sliding plate (23), and the deflector rod linkage frame (21) is connected with the product fixing unit (10) in a sliding manner;

a second handle (24) connected to the second slide plate (23).

9. The bending tool of claim 8, further comprising: the second track board (25) is arranged on one side of the second sliding board (23) and fixedly connected with the bottom board (40), the second track board (25) is provided with a second limiting hole (26), the second handle (24) penetrates through the second limiting block hole and is fixedly connected with the second sliding board (23), and the second handle (24) can drive the second sliding board (23) to move along the shape and the contour of the second limiting hole (26).

10. Bending tool according to claim 1, wherein the product fixation unit (10) comprises:

the fixing unit body (11), the corner groove (112) is positioned on the fixing unit body (11);

and a cover plate (117) pivotally connected to the fixed unit body (11).