阅读说明：本技术 折弯装置 (Bending device ) 是由 鲁鹏 田凯 李杨 刘国风 于 2019-10-12 设计创作，主要内容包括：本发明提供了一种折弯装置,包括：第一夹持件和第二夹持件,第二夹持件用于放置工件的第一部分,第二夹持件位于第一夹持件的下方,第二夹持件沿靠近和远离第一夹持件的方向可移动地设置以夹持或释放工件；丝杆和丝母,丝杆沿第一预设方向延伸,丝杆绕其轴线可旋转地设置；丝母与丝杆配合,丝母与第二夹持件连接；折弯件和折弯平台,折弯平台用于放置工件的第二部分,折弯平台位于折弯件的下方,折弯平台沿第一预设方向可移动地设置,以在折弯平台带动工件的第二部分沿第一预设方向运动时,通过旋转丝杆驱动丝母和第二夹持件带动工件的第一部分沿第一预设方向运动。本发明的折弯装置解决了现有技术中的折弯装置容易造成工件损坏的问题。(The invention provides a bending device, comprising: the clamping device comprises a first clamping piece and a second clamping piece, wherein the second clamping piece is used for placing a first part of a workpiece, the second clamping piece is positioned below the first clamping piece, and the second clamping piece is movably arranged in the direction close to and far away from the first clamping piece so as to clamp or release the workpiece; the screw rod extends along a first preset direction and is rotatably arranged around the axis of the screw rod; the screw is matched with the screw rod and connected with the second clamping piece; the bending platform is used for placing a second part of the workpiece, the bending platform is located below the bending piece, and the bending platform is movably arranged along a first preset direction so as to drive the screw and the second clamping piece to drive the first part of the workpiece to move along the first preset direction by driving the screw and the second clamping piece through a rotary screw rod when the second part of the workpiece driven by the bending platform moves along the first preset direction. The bending device solves the problem that workpieces are easily damaged by the bending device in the prior art.)

1. A bending device for bending a workpiece, the bending device comprising:

the workpiece clamping device comprises a first clamping piece (1) and a second clamping piece (2), wherein the second clamping piece (2) is used for placing a first part of the workpiece, the second clamping piece (2) is positioned below the first clamping piece (1), the second clamping piece (2) is arranged at a distance from the first clamping piece (1), and the second clamping piece (2) is movably arranged in a direction close to and far away from the first clamping piece (1) so as to clamp or release the workpiece;

the screw rod (3) and the nut (4), the screw rod (3) extends along a first preset direction, and the screw rod (3) is rotatably arranged around the axis of the screw rod; the screw nut (4) is matched with the screw rod (3), and the screw nut (4) is connected with the second clamping piece (2) so as to drive the second clamping piece (2) to move along the first preset direction through the screw nut (4) when the screw rod (3) rotates;

the bending machine comprises a bending piece (6) and a bending platform (7), wherein the bending platform (7) is used for placing a second part of a workpiece, the bending platform (7) is located below the bending piece (6), the bending platform (7) and the bending piece (6) are arranged at intervals, the bending platform (7) is movably arranged in a first preset direction, so that the bending platform (7) drives the second part of the workpiece to move in the first preset direction, and the screw rod (3) drives the screw (4) and the second clamping piece (2) to drive the first part of the workpiece to move in the first preset direction.

2. The bending device according to claim 1, comprising a first rotary drive (5), said first rotary drive (5) being connected to said screw (3) to drive said screw (3) in rotation; the output rotational speed of the first rotary drive (5) is adjustably set to control the speed of movement of the second gripper (2).

3. Bending device according to claim 2, wherein said first rotary drive means (5) comprise:

a drive motor (51);

the output shaft of the driving motor (51) is connected with the input end of the speed reducer (52);

the first belt wheel is connected with the output end of the speed reducer (52) so as to drive the first belt wheel to rotate through the output end of the speed reducer (52);

the second belt wheel is arranged at an interval with the first belt wheel and is connected with the screw rod (3);

the transmission belt is sleeved on the first belt wheel and the second belt wheel, so that when the first belt wheel rotates, the second belt wheel and the screw rod (3) are driven to rotate through the transmission belt.

4. Bending device according to claim 1, comprising a guide (8), said guide (8) being connected to said second clamp (2) to guide said second clamp (2) by means of said guide (8) when said second clamp (2) moves in said first predetermined direction.

5. The bending device according to claim 1, wherein the first clamping member (1) and the second clamping member (2) are both plate-shaped structures, and the first clamping member (1) and the second clamping member (2) both extend in a second predetermined direction so as to clamp the workpiece through a plate surface of the first clamping member (1) facing the second clamping member (2) and a plate surface of the second clamping member (2) facing the first clamping member (1).

6. Bending device according to claim 2, wherein the bending member (6) comprises a bending roller extending in a second predetermined direction, the bending roller being rotatably arranged about its axis for bending the workpiece by bringing a side face of the bending roller into contact with the workpiece.

7. The bending device according to claim 6, wherein there are two bending rollers, and the two bending rollers are respectively:

a first roller (61);

a second roller (62), the second roller (62) and the first roller (61) are arranged at intervals along a third preset direction, and the axis of the second roller (62) is parallel to the axis of the first roller (61); the second roller (62) is positioned on one side, close to the bending platform (7), of the first roller (61), and the second roller (62) is movably arranged along the third preset direction.

8. The bending device according to claim 7, comprising a second rotary drive (9) and a third rotary drive (10), the output shaft of the second rotary drive (9) being connected to the first roller (61) to drive the first roller (61) in rotation; the output shaft of the third rotary driving device (10) is connected with the second roller (62) to drive the second roller (62) to rotate.

9. The bending device according to claim 8, comprising:

a cross beam (11), the cross beam (11) extending along the third preset direction;

the mounting platform (12) and the cross beam (11) are arranged at intervals, the second rotary driving device (9) is fixedly arranged on the mounting platform (12), and the third rotary driving device (10) is movably arranged on the mounting platform (12) along the third preset direction;

a boom (13), a first end of the second roller (62) is connected with a first end of the boom (13), a second end of the boom (13) is in sliding fit with the beam (11), and the boom (13) is movably arranged along the extension direction of the beam (11);

a sliding seat (14), wherein the second end of the second roller (62) is connected with the sliding seat (14), the sliding seat (14) is in sliding fit with the mounting platform (12), and the sliding seat (14) is movably arranged along the third preset direction.

10. The bending device according to claim 9, comprising two linear drive mechanisms (15), one linear drive mechanism (15) being connected to the boom (13) to drive the boom (13) in the third predetermined direction; and the other linear driving mechanism (15) is connected with the sliding seat (14) to drive the sliding seat (14) to move along the third preset direction.

Technical Field

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

Background

When a workpiece is bent by the bending device, the workpiece needs to be clamped by the clamping piece, and when the workpiece is clamped by the conventional bending device, the workpiece is clamped by the clamping structure driven by the air cylinder, so that the structure cannot accurately control the action of the clamping structure, the clamping structure is difficult to stably cooperate with other components, the clamping effect on the workpiece is influenced, and the workpiece is easily damaged.

For example, when bending two air conditioners, the two air conditioners are placed on a bending platform, and when the bending platform is lifted, a part of the clamping structure is driven by the air cylinder to be lifted simultaneously to clamp a workpiece. The clamping structure of the bending device with the structural design can not guarantee synchronous motion with the bending platform during motion, so that a large fall exists between the clamping structure and the bending platform, and the two devices are easy to deviate when being clamped, so that the two devices are damaged.

Disclosure of Invention

The invention mainly aims to provide a bending device to solve the problem that workpieces are easily damaged by the bending device in the prior art.

In order to achieve the above object, the present invention provides a bending apparatus for bending a workpiece, the bending apparatus including: the clamping device comprises a first clamping piece and a second clamping piece, wherein the second clamping piece is used for placing a first part of a workpiece, the second clamping piece is positioned below the first clamping piece, the second clamping piece and the first clamping piece are arranged at intervals, and the second clamping piece is movably arranged along the direction close to and far away from the first clamping piece so as to clamp or release the workpiece; the screw rod extends along a first preset direction and is rotatably arranged around the axis of the screw rod; the screw is matched with the screw rod and connected with the second clamping piece so as to drive the second clamping piece to move along a first preset direction through the screw when the screw rod rotates; the bending platform is used for placing a second part of the workpiece, the bending platform is located below the bending piece, the bending platform and the bending piece are arranged at intervals, the bending platform is movably arranged along a first preset direction, and when the bending platform drives the second part of the workpiece to move along the first preset direction, the screw and the second clamping piece are driven by a rotary screw rod to drive the first part of the workpiece to move along the first preset direction.

Further, the bending device comprises a first rotary driving device, the first rotary driving device is connected with the screw rod to drive the screw rod to rotate, and the output rotating speed of the first rotary driving device is adjustably set to control the moving speed of the second clamping piece.

Further, the first rotary drive device includes: a drive motor; the output shaft of the driving motor is connected with the input end of the speed reducer; the first belt wheel is connected with the output end of the speed reducer so as to drive the first belt wheel to rotate through the output end of the speed reducer; the second belt wheel is arranged at intervals with the first belt wheel and is connected with the screw rod; and the transmission belt is sleeved on the first belt wheel and the second belt wheel so as to drive the second belt wheel and the screw rod to rotate through the transmission belt when the first belt wheel rotates.

Further, the bending device comprises a guide part, and the guide part is connected with the second clamping part so as to guide the second clamping part through the guide part when the second clamping part moves along the first preset direction.

Further, first holder and second holder are platelike structure, and first holder and second holder all extend along the second and predetermine the direction to carry out the centre gripping to the work piece through the face of first holder orientation second holder and the face of second holder orientation first holder.

Further, the piece of bending includes the bending roller, and the bending roller extends along the second direction of predetermineeing, and the bending roller rotationally sets up around its axis to through the side and the work piece contact of messenger's bending roller in order to bend the work piece.

Further, the number of the bending rollers is two, and the two bending rollers are respectively: a first roller; the second roller, second roller and first roller set up along the third direction interval that predetermines, and the axis of second roller is parallel with the axis of first roller, and the second roller is located one side that first roller is close to the platform of bending, and the second roller is along the movably setting of third direction that predetermines.

Further, the bending device comprises a second rotary driving device and a third rotary driving device, and an output shaft of the second rotary driving device is connected with the first roller so as to drive the first roller to rotate; an output shaft of the third rotary driving device is connected with the second roller so as to drive the second roller to rotate.

Further, the bending device includes: the cross beam extends along a third preset direction; the mounting platform is arranged at intervals with the cross beam, the second rotary driving device is fixedly arranged on the mounting platform, and the third rotary driving device is movably arranged on the mounting platform along a third preset direction; the first end of the second roller is connected with the first end of the suspension arm, the second end of the suspension arm is in sliding fit with the cross beam, and the suspension arm is movably arranged along the extending direction of the cross beam; the second end of the second roller is connected with the sliding seat, the sliding seat is in sliding fit with the mounting platform, and the sliding seat is movably arranged along a third preset direction.

Furthermore, the bending device comprises two linear driving mechanisms, and one linear driving mechanism is connected with the suspension arm so as to drive the suspension arm to move along a third preset direction; and the other linear driving mechanism is connected with the sliding seat so as to drive the sliding seat to move along a third preset direction.

The bending device applying the technical scheme of the invention is used for bending the workpiece, and comprises: the clamping device comprises a first clamping piece and a second clamping piece, wherein the second clamping piece is used for placing a first part of a workpiece, the second clamping piece is positioned below the first clamping piece, the second clamping piece and the first clamping piece are arranged at intervals, and the second clamping piece is movably arranged along the direction close to and far away from the first clamping piece so as to clamp or release the workpiece; the screw rod extends along a first preset direction and is rotatably arranged around the axis of the screw rod; the screw is matched with the screw rod and connected with the second clamping piece so as to drive the second clamping piece to move along a first preset direction through the screw when the screw rod rotates; the bending platform is used for placing a second part of the workpiece, the bending platform is located below the bending piece, the bending platform and the bending piece are arranged at intervals, the bending platform is movably arranged along a first preset direction, and when the bending platform drives the second part of the workpiece to move along the first preset direction, the screw and the second clamping piece are driven by a rotary screw rod to drive the first part of the workpiece to move along the first preset direction. The screw rod rotates to drive the screw to move, the second clamping piece can be accurately driven to move, so that the action of the clamping structure is accurately controlled, the second clamping piece and the bending platform can be controlled to synchronously move by controlling the rotation of the screw rod, the second clamping piece and the bending platform can stably drive a workpiece to move, and the problem that the workpiece is damaged due to the fact that the workpiece is deviated when the bending device clamps the workpiece is solved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural view of an embodiment of a bending device according to the invention; and

fig. 2 shows an enlarged schematic illustration of a partial region of the exemplary embodiment of a bending device according to fig. 1.

Wherein the figures include the following reference numerals:

1. a first clamping member; 2. a second clamping member; 3. a screw rod; 4. a nut; 5. a first rotary drive device; 51. a drive motor; 52. a speed reducer; 6. bending a piece; 61. a first roller; 62. a second roller; 7. bending the platform; 8. a guide member; 81. a guide rail; 82. a slider; 9. a second rotary drive device; 10. a third rotary drive device; 11. a cross beam; 12. mounting a platform; 13. a suspension arm; 14. a slide base; 15. a linear drive mechanism.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1 to 2, the present invention provides a bending apparatus for bending a workpiece, the bending apparatus including: the workpiece clamping device comprises a first clamping piece 1 and a second clamping piece 2, wherein the second clamping piece 2 is used for placing a first part of a workpiece, the second clamping piece 2 is positioned below the first clamping piece 1, the second clamping piece 2 is arranged at a distance from the first clamping piece 1, and the second clamping piece 2 is movably arranged in the direction close to and far away from the first clamping piece 1 so as to clamp or release the workpiece; the screw rod 3 extends along a first preset direction, and the screw rod 3 is rotatably arranged around the axis of the screw rod 3; the screw nut 4 is matched with the screw rod 3, and the screw nut 4 is connected with the second clamping piece 2 so as to drive the second clamping piece 2 to move along a first preset direction through the screw nut 4 when the screw rod 3 rotates; a 6 and the platform 7 of bending bend, platform 7 of bending is used for placing the second part of work piece, platform 7 of bending is located the below of 6 of bending, platform 7 of bending sets up with 6 intervals of bending, platform 7 of bending is along the movably setting of first predetermined direction, in order when platform 7 of bending drives the second part of work piece along the motion of first predetermined direction, drive screw 4 and the first part that second holder 2 drove the work piece through rotatory lead screw 3 and move along first predetermined direction.

The bending device of the present invention is used for bending a workpiece, and includes: the workpiece clamping device comprises a first clamping piece 1 and a second clamping piece 2, wherein the second clamping piece 2 is used for placing a first part of a workpiece, the second clamping piece 2 is positioned below the first clamping piece 1, the second clamping piece 2 is arranged at a distance from the first clamping piece 1, and the second clamping piece 2 is movably arranged in the direction close to and far away from the first clamping piece 1 so as to clamp or release the workpiece; the screw rod 3 extends along a first preset direction, and the screw rod 3 is rotatably arranged around the axis of the screw rod 3; the screw nut 4 is matched with the screw rod 3, and the screw nut 4 is connected with the second clamping piece 2 so as to drive the second clamping piece 2 to move along a first preset direction through the screw nut 4 when the screw rod 3 rotates; a 6 and the platform 7 of bending bend, platform 7 of bending is used for placing the second part of work piece, platform 7 of bending is located the below of 6 of bending, platform 7 of bending sets up with 6 intervals of bending, platform 7 of bending is along the movably setting of first predetermined direction, in order when platform 7 of bending drives the second part of work piece along the motion of first predetermined direction, drive screw 4 and the first part that second holder 2 drove the work piece through rotatory lead screw 3 and move along first predetermined direction. The screw rod 3 is rotated to drive the screw nut 4 to move, the second clamping piece 2 can be accurately driven to move, so that the action of the clamping structure can be accurately controlled, the second clamping piece 2 and the bending platform 7 can be controlled to synchronously move by controlling the rotation of the screw rod 3, the second clamping piece 2 and the bending platform 7 can stably drive a workpiece to move, and the problem that the workpiece is damaged due to the fact that the workpiece is deviated when the bending device clamps the workpiece is solved.

In specific implementation, the first preset direction is a vertical direction, and the second clamping member 2 and the bending platform 7 are movably arranged along the vertical direction.

Specifically, the bending device comprises a first rotary driving device 5, the first rotary driving device 5 is connected with the screw rod 3 to drive the screw rod 3 to rotate, and the output rotating speed of the first rotary driving device 5 is adjustably set to control the moving speed of the second clamping piece 2. By adjusting the output rotating speed of the first rotary driving device 5, the rotation of the screw rod 3 can be accurately controlled, the moving speed of the second clamping piece 2 is further accurately controlled, and the motion synchronism of the second clamping piece 2 and the bending platform 7 is realized.

In a specific implementation, the screw 3 is connected to an output shaft of the first rotation driving device 5, and the output rotation speed of the first rotation driving device 5 is the rotation speed of the output shaft of the first rotation driving device 5.

Specifically, the first rotary drive device 5 includes: a drive motor 51; a speed reducer 52, an output shaft of the driving motor 51 is connected with an input end of the speed reducer 52; the first belt wheel is connected with the output end of the speed reducer 52 so as to drive the first belt wheel to rotate through the output end of the speed reducer 52; the second belt wheel is arranged at intervals with the first belt wheel and is connected with the screw rod 3; and the transmission belt is sleeved on the first belt wheel and the second belt wheel so as to drive the second belt wheel and the screw rod 3 to rotate through the transmission belt when the first belt wheel rotates. The driving motor 51 is connected with the screw rod 3 through the speed reducer 52 and belt wheel transmission, so that the rotating speed of the screw rod 3 is conveniently controlled, and the transmission mode of the transmission belt can slip when being overloaded, thereby preventing the workpiece from being damaged due to overlarge clamping force between the first clamping piece 1 and the second clamping piece 2.

In order to guarantee the stability of the second clamping part 2 when moving along the first preset direction, the bending device comprises a guide part 8, wherein the guide part 8 is connected with the second clamping part 2, so that the second clamping part 2 is guided through the guide part 8 when the second clamping part 2 moves along the first preset direction.

In practical implementation, the guide member 8 includes a guide rail 81 and a sliding block 82, the guide rail 81 extends along a first predetermined direction, the sliding block 82 is slidably mounted on the guide rail 81 along the first predetermined direction, and the sliding block 82 is connected to the second clamping member 2. Preferably, the sliding block 82 is provided in plurality, and the plurality of sliding blocks 82 are arranged at intervals along the first preset direction. The stress on the joint of the second clamping part 2 and the guide rail 81 can be more uniform by arranging the plurality of sliding blocks 82, and the stable motion of the second clamping part 2 is favorably ensured.

In order to realize the effective centre gripping to the work piece, improve the stability to the work piece centre gripping, first holder 1 and second holder 2 are platelike structure, and first holder 1 and second holder 2 all extend along the second direction of predetermineeing to carry out the centre gripping to the work piece through the face of first holder 1 orientation second holder 2 and the face of second holder 2 orientation first holder 1.

In order to enable the bending device to have a good bending effect on the workpiece, the bending piece 6 comprises a bending roller, the bending roller extends along a second preset direction, and the bending roller is rotatably arranged around the axis of the bending roller so as to bend the workpiece by enabling the side face of the bending roller to be in contact with the workpiece.

In a specific implementation, the second predetermined direction is a direction perpendicular to the first predetermined direction. The bending rollers are multiple, the multiple bending rollers are arranged at intervals, and the axes of the multiple bending rollers are parallel to each other.

In order to improve the flexibility of bending device work, the bending roller is two, and two bending rollers do respectively: a first roller 61; the second roller 62, the second roller 62 and the first roller 61 are arranged at intervals along a third preset direction, the axis of the second roller 62 is parallel to the axis of the first roller 61, the second roller 62 is located on one side, close to the bending platform 7, of the first roller 61, and the second roller 62 is movably arranged along the third preset direction. When bending the workpiece, bending at different positions of the workpiece can be achieved by the position of the second roller 62.

In a specific implementation, the third preset direction is a direction perpendicular to both the first preset direction and the second preset direction.

Specifically, the bending device comprises a second rotary driving device 9 and a third rotary driving device 10, wherein an output shaft of the second rotary driving device 9 is connected with the first roller 61 to drive the first roller 61 to rotate; the output shaft of the third rotary drive device 10 is connected to the second roller 62 to drive the second roller 62 to rotate. In this way, the second rotary driving device 9 and the third rotary driving device 10 can respectively control the rotation of the first roller 61 and the second roller 62, so that different bending requirements can be met according to actual requirements.

In order to guarantee the structural strength of the bending device and the smoothness of the movement of the second roller 62 along the third preset direction, the bending device comprises: the beam 11 extends along a third preset direction; the mounting platform 12 is arranged at intervals between the mounting platform 12 and the cross beam 11, the second rotary driving device 9 is fixedly arranged on the mounting platform 12, and the third rotary driving device 10 is movably arranged on the mounting platform 12 along a third preset direction; the first end of the second roller 62 is connected with the first end of the suspension arm 13, the second end of the suspension arm 13 is in sliding fit with the beam 11, and the suspension arm 13 is movably arranged along the extending direction of the beam 11; the second end of the sliding seat 14 and the second roller 62 are connected to the sliding seat 14, the sliding seat 14 is slidably engaged with the mounting platform 12, and the sliding seat 14 is movably disposed along a third predetermined direction. In this way, the mounting platform 12 can ensure the mounting stability of the second rotary driving device 9 and the third rotary driving device 10, and at the same time, the structure of the suspension arm 13 and the sliding base 14 can stably connect the second roller 62 with the cross beam 11 and the mounting platform 12, thereby ensuring the structural strength of the bending device and ensuring the smoothness of the movement of the second roller 62 along the third preset direction.

In order to drive the second roller 62 to move along the third preset direction, the bending device comprises two linear driving mechanisms 15, and one linear driving mechanism 15 is connected with the suspension arm 13 to drive the suspension arm 13 to move along the third preset direction; another linear driving mechanism 15 is connected to the slide 14 to drive the slide 14 to move along the third predetermined direction, so as to smoothly drive the second roller 62 to move along the third predetermined direction.

In specific implementation, the linear driving mechanism 15 is an air cylinder, an oil cylinder or an electric push rod. Preferably, the linear driving mechanism 15 includes a motor and a lead screw, the lead screw is connected to an output shaft of the motor, a driving nut is mounted on the lead screw, and the motor drives the lead screw to rotate and drives the driving nut to move along the length direction of the lead screw.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

the bending device of the present invention is used for bending a workpiece, and includes: the workpiece clamping device comprises a first clamping piece 1 and a second clamping piece 2, wherein the second clamping piece 2 is used for placing a first part of a workpiece, the second clamping piece 2 is positioned below the first clamping piece 1, the second clamping piece 2 is arranged at a distance from the first clamping piece 1, and the second clamping piece 2 is movably arranged in the direction close to and far away from the first clamping piece 1 so as to clamp or release the workpiece; the screw rod 3 extends along a first preset direction, and the screw rod 3 is rotatably arranged around the axis of the screw rod 3; the screw nut 4 is matched with the screw rod 3, and the screw nut 4 is connected with the second clamping piece 2 so as to drive the second clamping piece 2 to move along a first preset direction through the screw nut 4 when the screw rod 3 rotates; a 6 and the platform 7 of bending bend, platform 7 of bending is used for placing the second part of work piece, platform 7 of bending is located the below of 6 of bending, platform 7 of bending sets up with 6 intervals of bending, platform 7 of bending is along the movably setting of first predetermined direction, in order when platform 7 of bending drives the second part of work piece along the motion of first predetermined direction, drive screw 4 and the first part that second holder 2 drove the work piece through rotatory lead screw 3 and move along first predetermined direction. The screw rod 3 is rotated to drive the screw nut 4 to move, the second clamping piece 2 can be accurately driven to move, so that the action of the clamping structure can be accurately controlled, the second clamping piece 2 and the bending platform 7 can be controlled to synchronously move by controlling the rotation of the screw rod 3, the second clamping piece 2 and the bending platform 7 can stably drive a workpiece to move, and the problem that the workpiece is damaged due to the fact that the workpiece is deviated when the bending device clamps the workpiece is solved.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

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.