CN108723136A - A kind of apparatus for bending of workpiece - Google Patents

Abstract

The invention belongs to busbar technical fields, disclose a kind of apparatus for bending of workpiece.The apparatus for bending includes：Falsework and it may be contained within pre-bend mechanism and bending forming mechanism on falsework, the mechanism that pre-bends can will wait for that a part for bending busbar is turned down along first direction, to form the workpiece that pre-bends, the workpiece that pre-bends includes the our department not turned down and the folding portion turned down；Plane of the first direction perpendicular to the place of our department；The folding portion for the workpiece that pre-bends can in a second direction be continued to turn down by bending forming mechanism, and folding portion is bonded with our department and is in the bending of the first default included angle A, form bending and molding workpiece, and second direction is parallel to the plane where our department.The apparatus for bending is without welding, surfacing, avoids to weld Ba Weizhichu and solar battery chip welding quality bad or the case where easy to produce rosin joint；Simultaneously because without welding, the link of butt welding bar reparation is eliminated, it is time saving and energy saving, and then improve production efficiency.

Description

A workpiece bending device

technical field

The invention relates to the technical field of bus bars, in particular to a workpiece bending device.

Background technique

With the rapid increase of global energy consumption and the depletion of traditional fossil energy, energy issues and the environment have gradually become two major issues of global concern. As a clean and renewable resource, solar energy has increased its proportion in the power generation field year by year, and its application prospects are very broad.

In the solar photovoltaic industry, the solar cell chip can become the actual finished product of the output power supply after laying, laminating and packaging. Among them, the bus bar is the main component, which mainly connects the solar cell chips in series and collects the current to the junction box to provide power to the outside.

For bus bars with shape requirements, taking bus bars with an L-shaped structure as an example, the prior art basically uses two bus bars to be formed by manual welding. There are following defects in this way:

First of all, it is easy to produce solder bumps after welding, the surface is uneven, and the subsequent welding quality with the solar cell chip is not good, and there are hidden dangers. Therefore, it is necessary to increase the trimming process of the solder bar in the follow-up, which is complicated and laborious.

Secondly, it is easy to produce false welding during the welding process, which increases the resistance of the bus bar, thereby affecting the quality of the finished product.

Again, because the two bus bars are welded after cutting, the base material inside the bus bars is cut off, so the continuity of current conduction cannot be maintained.

Contents of the invention

The object of the present invention is to provide a workpiece bending device, which does not require welding, saves time and effort, and effectively improves production efficiency and product quality.

To achieve this purpose, the present invention adopts the following technical solutions: a bending device for a workpiece, comprising: a work frame and a pre-bending mechanism and a bending forming mechanism placed on the work frame, the pre-bending mechanism includes : the first driving device for driving the workpiece to be bent to turn over in the first direction and the first shaping part for shaping the workpiece to be bent, the first driving device drives the first shaping part to be able to A part of the bent bus bar is folded along a first direction to form a pre-bent workpiece, and the pre-bent workpiece includes an unfolded main part and a folded folded part; the first direction is perpendicular to the The plane where the main part is located; the bending forming mechanism includes: a second driving device for driving the pre-bending workpiece to turn over in the second direction and a second shaping part for shaping the pre-bending workpiece, the second The driving device drives the second shaping part to continue to fold the folded part of the pre-bent workpiece along the second direction. Folded, forming a bent and shaped workpiece, the second direction is parallel to the plane where the main part is located.

Optionally, the first direction is the extension direction of the first shaped part, and the second direction is the extended direction of the second shaped part.

Optionally, it also includes a pressing mechanism arranged on the working frame, the pressing mechanism can press the bending and forming workpiece along a third direction, and the third direction is opposite to the first direction .

Optionally, the pressing mechanism and the pre-bending mechanism can cooperate to fold a part of the bus bar to be bent to form the pre-bending workpiece. first cylinder first cylinder first cylinder

Optionally, the first driving device is configured as a first cylinder, the first shaping member is configured as a first punch, and the first punch is connected to one end of the first cylinder, and the first The air cylinder can drive the first punch to move along the first direction.

Optionally, the second driving device is configured as a second air cylinder, the second shaping member is configured as a second punch, and the second punch is connected to one end of the second air cylinder, and the second air cylinder The second punch can be driven to move along the second direction.

Optionally, the pressing mechanism includes a third cylinder arranged on the work frame and a third punch connected to one end of the third cylinder, and the third cylinder can drive the third punch along the The third direction moves.

Optionally, the first punch is arranged at a second preset angle B with the length direction of the bus bar to be bent, where A=180°−2B.

Optionally, the third punch is arranged at a second preset angle B with the length direction of the bus bar to be bent, where A=180°−2B.

Optionally, the second preset included angle B is 45°.

Beneficial effects of the present invention:

The pre-bending mechanism of the present invention first folds a part of the bus bar to be bent along the first direction to form a pre-bent workpiece, wherein the first direction is perpendicular to the plane where the part is located, and then the bending forming mechanism can fold the pre-bent The folded part of the bent workpiece continues to be folded along the second direction, and the second direction is parallel to the plane where the main part is located, so that the folded part fits the main part and forms a bent shape with a first preset included angle A to form a bent and formed workpiece. The bus bar to be bent is formed into a bus bar of the desired shape through the pre-bending stage and the bending forming stage.

Compared with the welding forming method in the prior art, the bending device does not need to be welded, and the surface is smooth, which avoids the poor quality of welding with the solar cell chip at the position of the welding bar or the situation of easy to produce false welding, and eliminates potential safety hazards; at the same time , During the entire bending and forming process, the inner substrate of the bus bar is not cut off, which ensures the continuity of current conduction and thus improves the quality of the finished product.

Moreover, the bending device and method are bent and formed through the pre-bending stage and the bending forming stage. Since no welding is required, the link of repairing the welding bar is omitted, which saves time and effort, thereby improving production efficiency.

Description of drawings

1 is a schematic structural view of a bus bar to be bent in Embodiment 1 of the present invention;

Fig. 2 is a schematic structural view of a pre-bending workpiece in Embodiment 1 of the present invention;

Fig. 3 is a schematic structural view of the bending and forming workpiece in Embodiment 1 of the present invention;

Fig. 4 is a structural schematic diagram of a viewing angle of the workpiece bending device in Embodiment 1 of the present invention;

Fig. 5 is a structural schematic diagram of another viewing angle of the workpiece bending device in Embodiment 1 of the present invention;

6 is a schematic diagram of the state of the workpiece bending device in the pre-bending stage in Embodiment 1 of the present invention;

Fig. 7 is a schematic diagram of the state of the workpiece bending device in the bending forming stage in the first embodiment of the present invention;

Fig. 8 is a schematic diagram of the state of the workpiece bending device in the first embodiment of the present invention in the pressing stage;

Fig. 9 is a schematic diagram of the state of the workpiece bending device in the second embodiment of the present invention in the pre-bending stage.

In the picture:

1. Working frame; 2. Pre-bending mechanism; 3. Bending and forming mechanism; 4. Pressing mechanism; 5. Bus bar to be bent; 6. Pre-bending workpiece; 7. Bending and forming workpiece;

21. The first cylinder; 22. The first punch;

31. The second cylinder; 32. The second punch; 33. The bending slider;

41. The third cylinder; 42. The third punch; 43. The second working surface; 44. The punch seat; 45. The compression slider; 46. The guide rail;

61. Headquarters; 62. Folding Department.

Detailed ways

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

Embodiment one

This embodiment provides a bending device for a workpiece. Using the bending device to process the bus bar 5 to be bent as shown in FIG. The workpiece 6 then undergoes a bending and forming stage to form a bending and forming workpiece 7 as shown in FIG. 3 . By adopting the bending device, the bus bar of the required shape can be formed without welding, and the operation is simple and convenient to use.

The workpiece bending device provided in this embodiment, as shown in Figure 4-5, the bending device includes: a working frame 1 and a pre-bending mechanism 2 and a bending forming mechanism 3 placed on the working frame 1, wherein the pre-bending The bending mechanism 2 includes: a first driving device for driving the workpiece 5 to be bent to turn over in a first direction and a first shaping part for shaping the workpiece 5 to be bent, the first driving device drives the first shaping part to A part of the bus bar 5 to be bent is folded along a first direction to form a pre-bent workpiece 6, and the pre-bent workpiece 6 includes an unfolded main portion 61 and a folded folded portion 62; the first direction is vertical On the plane where the main part 61 is located. Simultaneously, the bending forming mechanism 3 includes: a second driving device for driving the pre-bending workpiece 6 to turn over in the second direction and a second shaping part of the pre-bending workpiece 6, and the second driving device drives the second shaping part to be able to Continue to fold the folded part 62 of the pre-bent workpiece 6 along the second direction, the folded part 62 is attached to the main part 61 and forms a bent shape with a first preset angle A to form a bent and formed workpiece 7, and the second The direction is parallel to the plane where the main part 61 is located. In addition, the first direction is the extension direction of the first shaped part, and the second direction is the extended direction of the second shaped part.

Compared with the welding method used in the prior art, the bending device does not need welding, and the surface is smooth, which avoids the poor quality of welding with the solar cell chip at the position of the welding bar or the situation of easy to produce false welding, and eliminates potential safety hazards; at the same time, During the entire bending and forming process, the inner base material of the bus bar 5 to be bent is not cut off, which ensures the continuity of current conduction, thereby improving the quality of the finished product.

The bending device is bent and formed through the pre-bending stage and the bending forming stage. Since no welding is required, the link of repairing the welding bar is omitted, which saves time and effort, thereby improving production efficiency.

It should be noted that the bending device also includes a driving mechanism (not shown in the figure), a driving wheel arranged at the output end of the driving mechanism and a driven wheel that fits on the surface of the driving wheel, and the bus bar 5 to be bent is set Between the driving wheel and the driven wheel, the driving mechanism drives the driving wheel to rotate, so that the bus bar 5 to be bent moves toward the pre-bending mechanism 2 to realize the feeding of the bus bar 5 to be bent.

Due to the resilience of the material itself during the bending and forming stage, the folded part 62 of the bent and formed workpiece 7 may not completely fit with the main part 61. Optionally, as shown in Figure 4-5, the bending The device can also include a pressing mechanism 4 arranged on the work frame 1, the pressing mechanism 4 can press the main part 61 and the folded part 62 of the bent and formed workpiece 7 along the third direction, and the first direction and the third direction on the contrary.

As shown in Figures 4-6, the above-mentioned first driving device is configured as a first cylinder 21, and the first shaping member is configured as a first punch 22, and the first punch 22 is connected to one end of the first cylinder 21, and the first cylinder 21 can drive the first punch 22 to move along the first direction. Wherein the working frame 1 is provided with a guide through hole (not marked in the figure) corresponding to the first punch 22 . Since the bus bar 5 to be bent is arranged between the pre-bending mechanism 2 and the pressing mechanism 4, the pressing mechanism 4 plays the role of carrying and supporting at this time. Meanwhile, the first punch 22 is provided with a first working surface (not shown in the figure) attached to the bus bar 5 to be bent.

As shown in Figure 6, when in the pre-bending stage, after the first cylinder 21 can drive the first punch 22 to pass through the guide through hole, the end face of the first punch 22 is pressed against the bus bar 5 to be bent beyond the pressure. The part of the tightening mechanism 4, during the process of the first punch 22 moving along the first direction, pre-bends the bus bar 5 to be bent, so that the bus bar 5 to be bent fits with the inclined first working surface , forming the above-mentioned pre-bent workpiece 6 . Wherein the first punch 22 is set at a second preset angle B with the length direction of the bus bar 5 to be bent, where A=180°-2B.

As shown in Figures 4, 5, and 7, the above-mentioned second driving device is configured as a second cylinder 31, and the second shaping member is configured as a second punch 32, and the second punch 32 is connected with one end of the second cylinder 31, and the second The cylinder 31 can drive the second punch 32 to move along the second direction. The bending and forming mechanism 3 also includes a bending and forming slider 33 fixed on the work frame 1, wherein the bending and forming slider 33 cooperates with the second punch 32 to play a guiding role and avoids the second punch 32 The case where the stroke is long and the force is unstable. At the same time, the second punch 32 is a cuboid structure, and the second cylinder 31 can drive the second punch 32 to move along the second direction, so as to bend the pre-bending workpiece 6 into a bent and formed workpiece 7. At this time, the second direction Specifically, it is the longitudinal direction of the bending and forming slider 33 .

As shown in Figure 7, when in the bending and forming stage, the second punch 32 slides along the bending and forming slider 33 under the drive of the second cylinder 31, because the main part 61 of the pre-bending workpiece 6 is placed on the pressing mechanism 4, its folded portion 62 is attached to the side of the pressing mechanism 4 through the pre-bending stage, and the second punch 32 presses against the folded portion 62 of the pre-bent workpiece 6 and moves it along the first Bending in two directions to form the above-mentioned bent and formed workpiece 7 .

As shown in Figures 4, 5, and 8, in order to ensure that the main part 61 and the folded part 62 of the bending and forming workpiece 7 can closely fit, the pressing mechanism 4 includes a third cylinder 41 arranged on the work frame 1, connected to the first The punch seat 44 at the output end of the three-cylinder 41 and the third punch 42 arranged on the punch seat 44, wherein the side of the punch seat 44 is provided with a bending and forming slide block 33, and the work frame 1 is provided with a corresponding pressing slide block 45 There is a guide rail 46, because the pressing slide block 45 is slidingly matched with the guide rail 46, so that the third cylinder 41 drives the punch seat 44, and drives the third punch 42 to move along the third direction, at this time, the third direction is specifically the guide rail 46 the length direction.

As shown in Figure 8, when in the pressing stage, since the pressing slider 45 can slide along the guide rail 46, the third cylinder 41 drives the punch seat 44 and drives the third punch 42 to move along the third direction, so that The end face of the third punch 42 presses the folded part 62 and the main part 61 of the bent and formed workpiece 7 tightly, so that the finished product is a complete whole.

In the bending device of the workpiece provided in this embodiment, since the first punch 22 is provided with a first working surface that presses against the bus bar 5 to be bent, the first working surface is inclined to the side adjacent to it, wherein the first The punch 22 is set at a second preset angle B with the length direction of the bus bar 5 to be bent, where A=180°−2B. . Simultaneously, the third punch 42 is provided with a second working surface 43 that fits the pre-bending workpiece 6, and the second working surface 43 is inclined to the side adjacent to it, and the length of the third punch 42 and the bus bar 5 to be bent The direction is set at a second preset angle B, where A=180°−2B. The first working surface of the first punch 22 cooperates with the second working surface 43 of the third punch 42 to bend the bus bar 5 to be bent into multiple angles.

In this embodiment, the bus bar is bent at 90° as an example, that is, the bus bar has an L-shaped structure.

When in the pre-bending stage, when the first punch 22 is driven by the first cylinder 21 to move in the first direction, the two sides of the bus bar 5 to be bent are attached to the first working surface and the second working surface respectively. For the working surface 43, the second preset included angle B is 45° at this time. When in the bending forming stage, the second punch 32 presses against the pre-bending workpiece 6 and bends it along the second direction, at this time, the first preset included angle A of the bending forming workpiece 7 is 90 degrees . When in the pressing stage, the third punch 42 presses the bending and forming workpiece 7 to form the L-shaped bus bar.

It should be noted that the cooperation between the first working surface of the first punch 22 and the second working surface 43 of the third punch 42 can bend the bus bar into multiple angles, and only the first working surface needs to be replaced for different angles. surface and the inclination angle of the second working surface 43.

The working process of the bending device of the workpiece provided by the present embodiment is as follows:

Pre-bending stage: first place the bus bar 5 to be bent between the pre-bending mechanism 2 and the pressing mechanism 4, and then the first cylinder 21 can drive the first punch 22 to penetrate the guide through hole, the first The end face of the punch 22 is pressed against the part of the bus bar 5 to be bent that exceeds the pressing mechanism 4, so that the bus bar 5 to be bent fits with the inclined first working surface, and then a part of the bus bar 5 to be bent Perform pre-bending along the first direction to form the above-mentioned pre-bending workpiece 6; Bending and forming stage: first reset the first punch 22, and then the second punch 32 is driven by the second cylinder 31 to form along the bending The slider 33 slides, the second punch 32 presses against the folded portion 62 of the pre-bending workpiece 6 and bends it along the second direction to form the above-mentioned bent and formed workpiece 7; the pressing stage: first press the second punch 32 reset, then the third cylinder 41 drives the punch seat 44, and drives the third punch 42 to move in the third direction, so that the end face of the third punch 42 will bend the folded part 62 and the main part 61 of the workpiece 7 Compress, and then complete a working cycle.

This embodiment also provides a method for bending a bus bar. The bending method uses the above-mentioned bending device for bending processing, including the following steps:

Pre-bending, turning over a part of the bus bar 5 to be bent along the first direction to form a pre-bending workpiece 6, the pre-bending workpiece 6 includes an unfolded main part 61 and a folded over part 62 ; the first direction is perpendicular to the plane where the part 61 is; bending and forming, the turn-over part 62 of the pre-bending workpiece 6 continues to turn over along the second direction, so that the turn-over part 62 of the pre-bending workpiece 6 and the part 61 Fitting and forming a bent shape with a first preset included angle A to form a bent and formed workpiece 7 , and the second direction is parallel to the plane where the main part 61 is located.

Embodiment two

The difference between this embodiment and the first embodiment is that in the pre-bending stage, not only the pre-bending mechanism 2 works, but the pressing mechanism 4 can cooperate with the pre-bending mechanism 2 to bend a part of the bus bar 5 to be bent. Turn over to form the pre-bending workpiece 6. The rest of the structure and work process are the same, so no more details.

As shown in Figure 9, when in the pre-bending stage, the bus bar 5 to be bent is first placed between the pre-bending mechanism 2 and the pressing mechanism 4, and then the first cylinder 21 can drive the first punch 22 Move along the first direction, and the third cylinder 41 drives the punch seat 44, and drives the third punch 42 to move along the third direction, so that a part of the bus bar 5 to be bent passes through the first punch 22 and the third punch After the head 42 is pressed, the two sides of this part are attached to the first working surface and the second working surface 43 respectively, and then the folded part 62 of the bus bar 5 to be bent is pre-bent along the first direction to form a The above-mentioned pre-bent workpiece 6 . Using this method in the pre-bending stage, the effect of pre-bending is obvious, which greatly shortens the production time and improves the production efficiency.

This embodiment also provides a method for bending a bus bar. The bending method uses the above-mentioned bending device for bending processing, including the following steps:

Pre-bending, moving the pre-bending mechanism 2 along the first direction, and moving the pressing mechanism 4 along the third direction, so that a part of the bus bar 5 to be bent is folded along the first direction to form a pre-bending workpiece 6. The pre-bending workpiece 6 includes the unfolded main part 61 and the folded part 62; the first direction is perpendicular to the plane where the main part 61 is located; pre-bending, using the bending forming mechanism 3 to pre-bend The folded part 62 of the bent workpiece 6 continues to be folded along the second direction, so that the folded part 62 of the pre-bent workpiece 6 is attached to the main part 61 and forms a bent shape with a first preset angle A, forming a bent and formed workpiece 7. The second direction is parallel to the plane where the main part 61 is located.

Apparently, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the claims of the present invention.

Claims (10)

1. A bending device for a workpiece, comprising: a working frame (1), characterized in that, also comprising: The pre-bending mechanism (2) and the bending forming mechanism (3) placed on the work frame (1), The pre-bending mechanism (2) includes: a first driving device for driving the workpiece (5) to be bent to turn over in the first direction and a first shaping part for shaping the workpiece (5) to be bent, so The first driving device can drive the first shaping part to fold a part of the bus bar (5) to be bent along the first direction to form a pre-bending workpiece (6), and the pre-bending workpiece (6) ) includes an unturned main part (61) and a turned over turned part (62); the first direction is perpendicular to the plane where the main part (61) is located; The bending forming mechanism (3) includes: a second driving device for driving the pre-bending workpiece (6) to turn over in a second direction and a second shaping member for shaping the pre-bending workpiece (6), the The second driving device can drive the second shaped part to continue to fold the folded portion (62) of the pre-bent workpiece (6) along the second direction, the folded portion (62) and the main portion ( 61) Bonding and forming a bent shape with a first preset included angle A to form a bent and formed workpiece (7), and the second direction is parallel to the plane where the main part (61) is located. 2 . The bending device according to claim 1 , wherein the first direction is an extension direction of the first shaped part, and the second direction is an extended direction of the second shaped part. 3 . 3. The bending device according to claim 1, further comprising a pressing mechanism (4) arranged on the working frame (1), and the pressing mechanism (4) can move along the third direction The bending and forming workpiece (7) is compressed, and the third direction is opposite to the first direction. 4. The bending device according to claim 3, characterized in that, the pressing mechanism (4) and the pre-bending mechanism (2) can cooperate to bend a part of the bus bar (5) to be bent Folding to form the pre-bent workpiece (6). 5. The bending device according to claim 1, characterized in that, the first driving device is configured as a first cylinder (21), and the first shaping part is configured as a first punch (22), so The first punch (22) is connected to one end of the first cylinder (21), and the first cylinder (21) can drive the first punch (22) to move along the first direction. 6. The bending device according to claim 1, characterized in that, the second driving device is configured as a second cylinder (31), and the second shaping member is configured as a second punch (32), the The second punch (32) is connected with one end of the second cylinder (31), and the second cylinder (31) can drive the second punch (32) to move along the second direction. 7. The bending device according to claim 3 or 4, characterized in that, the pressing mechanism (4) includes a third air cylinder (41) arranged on the work frame (1) and connected to the A third punch (42) at one end of the third cylinder (41), the third cylinder (41) can drive the third punch (42) to move along the third direction. 8. The bending device according to claim 5, characterized in that, the first punch (22) is set at a second preset angle B with the length direction of the bus bar (5) to be bent, Among them, A=180°-2B. 9. The bending device according to claim 7, characterized in that, the third punch (42) is set at a second preset angle B with the length direction of the bus bar (5) to be bent, Among them, A=180°-2B. 10. The bending device according to claim 8 or 9, characterized in that, the second preset included angle B is 45°.