A suction type handling suction device

Abstract

The present application discloses an adsorption-type handling suction device. The adsorption-type handling suction device includes: a frame, a suction cup group and a clamping block. The frame includes a first support arm and a second support arm both extending in a first direction, and a connecting arm connected between the first support arm and the second support arm; the suction cup group is installed on the connecting arm for non-contact adsorption of workpieces; the side walls at both ends of the first support arm and the side walls at both ends of the second support arm are installed with the clamping block, and the inner side surface of the clamping block includes a limiting inclined surface and a step surface bent and connected along the adsorption direction of the suction cup group, and the step surface is located on the inner side of the limiting inclined surface; when the suction cup group adsorbs the workpiece, the workpiece is limited in the handling space defined by the four limiting inclined surfaces, and the surface edge of the workpiece facing the suction cup group is attached to the step surface. The adsorption-type handling suction device provided by the present application reduces the damage to the microstructure of the surface of the precision workpiece during the handling process and improves the handling efficiency.

Description

Technical Field

[0001] The present application relates to the field of mechanical processing technology, and in particular to an adsorption-type transporting gripper. Background Art

[0002] Bernoulli chucks are currently widely used in precision workpieces, especially in the production and handling of solar silicon wafers in the photovoltaic industry. However, the competition in the photovoltaic industry is becoming increasingly fierce, and there is an increasing demand for the photoelectric conversion rate of solar silicon wafers. The main factor affecting the photoelectric conversion rate is whether the microscopic concave-convex structure formed on the surface of the silicon wafer by the texturing process can be well preserved in the subsequent series of processes.

[0003] In the Bernoulli suction cup products that are widely used nowadays, the limiting structure supported by large-area sponges and silicone pads will destroy the microstructure formed by texturing in the process section between texturing and coating, affecting the photoelectric conversion rate of solar silicon wafers; and if the limiting method is adopted to abut against the side of the solar silicon wafer, the solar silicon wafer may be stuck in the handling tool and cannot be unloaded, affecting the handling efficiency. Utility Model Content

[0004] The purpose of the present application is to provide an adsorption-type handling fixture to reduce damage to the microstructure of the surface of a precision workpiece during handling and improve handling efficiency.

[0005] The technical solution of the present application provides an adsorption-type handling suction device, comprising: a frame, a suction cup group and a clamping block; the frame comprises a first support arm and a second support arm both extending in a first direction, and a connecting arm connected between the first support arm and the second support arm; the suction cup group is mounted on the connecting arm for contactless adsorption of workpieces; both end side walls of the first support arm and the end side walls of the second support arm are mounted with the clamping block, the inner side surface of the clamping block comprises a limiting inclined surface and a step surface bent and connected along the adsorption direction of the suction cup group, the step surface is located on the inner side of the limiting inclined surface; when the suction cup group adsorbs the workpiece, the workpiece is limited in the handling space defined by the four limiting inclined surfaces, and the surface edge of the workpiece facing the suction cup group is attached to the step surface.

[0006] Optionally, the suction cup group includes two Bernoulli suction cups, and the two Bernoulli suction cups are arranged along the length direction of the connecting arm.

[0007] Optionally, guide rails are provided on both end side surfaces of the first support arm and both end side surfaces of the second support arm along the first direction, and the position of the blocking block is adjustably arranged on the guide rails.

[0008] Optionally, the guide rail is a strip-shaped opening, and the adsorption-type transport suction device also includes a connecting bolt. A threaded hole is opened on any of the blocks, one end of the connecting bolt is limited on the outside of the strip-shaped opening, and the other end of the connecting bolt is passed through the strip-shaped opening and can be adjustably installed in the threaded hole.

[0009] Optionally, a card slot is provided on the card block, and the card slot is arranged on the outer side of the first support arm or the second support arm.

[0010] Optionally, a concave arc surface is provided at the junction of the groove bottom wall of the slot and two oppositely arranged groove walls, and the arc surface extends along the first direction.

[0011] Optionally, the inner side surface of the blocking block further includes a yielding inclined surface inclined in the same direction as the limiting inclined surface, and the step surface is located between the limiting inclined surface and the yielding inclined surface.

[0012] Optionally, the first support arm and the second support arm are provided with adjustment scales on the edges of the strip-shaped opening.

[0013] Optionally, an air hole is opened on the outer wall of the Bernoulli suction cup, and an air hole plug is detachably installed on the air hole.

[0014] Optionally, a quick connector is installed on the connecting arm, and the quick connector is used to connect to a compressed air source.

[0015] The above technical solution has the following beneficial effects:

[0016] The adsorption-type handling fixture provided by the present application sets the inner side surface of the clamping block as a bending-connected limiting slope and a step surface, and laterally limits the circumferential edge of the workpiece adsorbed by the suction cup group by the limiting slope, and vertically limits the workpiece by fitting the step surface to the surface edge of the workpiece. The workpiece is positioned, limited and transported by fitting the step surface to the surface edge of the workpiece, which can reduce the damage to the microstructure on the surface of the workpiece, and avoid the problem of the workpiece being stuck in the handling fixture due to clamping the side of the workpiece, thereby improving the handling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the structure of an adsorption-type transport gripper in one embodiment of the present application.

[0018] Figure 2 It is a side view of a suction-type transport gripper in one embodiment of the present application.

[0019] Figure 3 It is a structural schematic diagram of a card block in one embodiment of the present application.

[0020] Figure 4It is a longitudinal cross-sectional view of a card block in one embodiment of the present application.

[0021] Reference Numbers

[0022] 1-frame, 10-first supporting arm, 11-second supporting arm, 12-connecting arm, 13-strip opening, 14-quick connector.

[0023] 2-suction cup set, 20-Bernoulli suction cup, 21-air hole plug.

[0024] 3-block, 30-limiting inclined surface, 31-step surface, 32-yielding inclined surface, 33-slot, 34-threaded hole, 35-arc surface.

[0025] 4-Connecting bolts.

[0026] 5- Workpiece. DETAILED DESCRIPTION

[0027] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings.

[0028] It is easy to understand that according to the technical solution of the utility model, without changing the essential spirit of the utility model, a variety of structural modes and implementation modes can be replaced by those skilled in the art. Therefore, the following specific implementation methods and drawings are only exemplary descriptions of the technical solution of the utility model, and should not be regarded as the entirety of the utility model or as a limitation or restriction on the technical solution of the utility model.

[0029] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. They are relative concepts and may change accordingly according to different positions and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0030] The present application provides an adsorption-type transporting gripper, comprising: a frame 1, a suction cup group 2 and a clamping block 3.

[0031] Please refer to Figure 1 The frame 1 includes a first support arm 10 and a second support arm 11, both extending along a first direction, and a connecting arm 12 connected between the first support arm 10 and the second support arm 11. The first direction in the embodiment of the present application may be the X direction or the Y direction of the coordinate axis. Figure 2 The direction indicated by the double-headed arrow A is the first direction. The first support arm 10 and the second support arm 11 are not strictly required to be arranged in parallel, and their extension lines are allowed to cross.

[0032] The suction cup group 2 is installed on the connecting arm 12 and is used for non-contact suction of the workpiece 5 (solar silicon wafer). A Bernoulli suction cup 20 may be provided in the suction cup group 2 to perform non-contact suction on the workpiece 5 through the Bernoulli suction cup 20 .

[0033] The two end side walls of the first support arm 10 and the two end side walls of the second support arm 11 are both equipped with the clamping blocks 3. Figures 1 to 4 As shown, the inner side surface of the clamping block 3 includes a limiting inclined surface 30 and a step surface 31 which are bent and connected along the adsorption direction of the suction cup group 2 , and the step surface 31 is located on the inner side of the limiting inclined surface 30 .

[0034] like Figure 1 to Figure 2 As shown, when the suction cup group 2 adsorbs the workpiece 5, the workpiece 5 is limited in the handling space defined by the inner side surfaces of the four clamping blocks 3, and the surface edge of the workpiece 5 facing the suction cup group 2 is attached to the step surface 31. The limiting inclined surfaces 30 of the four clamping blocks 3 define a handling space with a gradually decreasing diameter along the adsorption direction of the suction cup group 2, so that the workpiece 5 can be adsorbed and after being attached to the step surface 31, the workpiece 5 cannot be swayed laterally in the handling space or escape from the handling space due to the limiting of the limiting inclined surfaces 30.

[0035] The adsorption-type transporting fixture provided in the embodiment of the present application sets the inner side surface of the clamping block 3 into a limiting slope 30 and a step surface 31 that are bent and connected, and uses the limiting slope 30 to laterally limit the circumferential edge of the workpiece 5 adsorbed by the suction cup group 2, and uses the step surface 31 to fit the surface edge of the workpiece 5 to vertically limit the workpiece 5. The step surface 31 fits the surface edge of the workpiece 5 to position, limit and transport the workpiece 5, which can reduce the damage to the microstructure on the surface of the workpiece 5, and avoid the problem of the workpiece 5 being stuck in the transporting fixture and unable to be unloaded due to clamping the side of the workpiece 5, thereby improving the transport efficiency.

[0036] As an optional embodiment, the suction cup group 2 includes two Bernoulli suction cups 20, and the two Bernoulli suction cups 20 are arranged along the length direction of the connecting arm 12. Figure 1 As shown, the length direction of the connecting arm 12 refers to the direction from the first supporting arm 10 to the second supporting arm 11 , and the two Bernoulli suction cups 20 are arranged along the above direction to effectively adsorb the workpiece 5 .

[0037] As an optional embodiment, guide rails are provided on both end sides of the first support arm 10 and both end sides of the second support arm 11 along the first direction, and the block 3 is adjustably arranged on the guide rails. Figure 1 As shown, the four clamping blocks 3 are correspondingly arranged on a guide rail, and can be adjusted along the first direction on the guide rail, thereby adjusting the size of the transport space to achieve the transport of workpieces 5 of various sizes.

[0038] As an optional embodiment, the guide rail is a strip-shaped opening 13, the suction-type handling fixture further includes a connecting bolt 4, and any of the clamping blocks 3 is provided with a threaded hole 34, one end of the connecting bolt 4 is limited outside the strip-shaped opening 13 by size design, and the other end of the connecting bolt 4 is adjustedly installed in the threaded hole 34 after passing through the strip-shaped opening 13. Figure 1 As shown, when the position of the block 3 needs to be adjusted, the connecting bolt 4 is loosened to allow the block 3 to slide in the strip opening 13 and the connecting bolt 4 is re-tightened after the block 3 slides to the specified position to position the block 3 at the specified position.

[0039] As an optional embodiment, a card slot 33 is formed on the card block 3, and the card slot 33 is arranged on the outer side of the first support arm 10 or the second support arm 11. Figure 3 As shown, the card slot 33 is connected to the outer side of the first support arm 10 or the second support arm 11, which is conducive to increasing the stability of the card block 3 installed on the first support arm 10 or the second support arm 11. The threaded hole 34 is located at the bottom of the card slot 33, facing the strip-shaped opening 13, which is convenient for the installation of the connecting bolt 4.

[0040] As an optional embodiment, a concave arc surface 35 is provided at the junction of the bottom wall of the slot 33 and the two oppositely arranged slot walls, and the arc surface 35 extends along the first direction. Figure 3 As shown, the arc surface 35 is concave to form a clearance space, so as to avoid the block 3 from interfering with the first support arm 10 or the second support arm 11 during the sliding process, thereby ensuring the sliding stability of the block 3.

[0041] As an optional embodiment, the inner side surface of the block 3 further includes a relief slope 32 inclined in the same direction as the limiting slope 30, and the step surface 31 is located between the limiting slope 30 and the relief slope 32. Figure 1 , Figure 3 to Figure 4 As shown, the relief slope 32 can reduce the weight of the block 3, and by reasonably setting the slope and position of the relief slope 32, the width of the step surface 31 can be controlled, thereby controlling the contact area between the step surface 31 and the surface edge of the workpiece 5. In the embodiment of the present application, the limiting slope 30 and the relief slope 32 are inclined in the same direction, which means that both are inclined in the direction close to the Bernoulli suction cup 20, and the slopes of the two can be the same or different.

[0042] As an optional embodiment, the first support arm 10 and the second support arm 11 are both provided with adjustment scales at the edges of the strip-shaped opening 13. In the embodiment of the present application, the adjustment scales can accurately locate the sliding position of the block 3, so that the block 3 can be accurately moved to a specified position to limit the workpiece 5 of corresponding size.

[0043] As an optional embodiment, an air hole is opened on the outer wall of the Bernoulli suction cup 20, and an air hole plug 21 is detachably installed on the air hole. In the embodiment of the present application, the air hole plug 21 can be opened as needed and a pressure gauge can be connected. By observing the reading of the pressure gauge, the adsorption force of the Bernoulli suction cup 20 on the workpiece can be intuitively obtained, which is convenient for adjusting the pressure inside the Bernoulli suction cup 20.

[0044] As an optional embodiment, a quick connector 14 is installed on the connecting arm 12, and the quick connector 14 is used to connect a compressed air source. The quick connector 14 in the embodiment of the present application can be quickly connected to a compressed air source. After the compressed gas in the compressed air source enters the Bernoulli suction cup 20, it is ejected through the bottom outlet of the Bernoulli suction cup 20, and a cyclone is formed on the inner side of the bottom outlet to generate negative pressure, thereby generating a non-contact adsorption effect on the workpiece 5 below.

[0045] As needed, the above technical solutions can be combined to achieve the best technical effect.

[0046] The above are only the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, on the basis of the principles of the present invention, several other modifications can be made, which should also be considered as the protection scope of the present invention.

Claims

1. An adsorption type handling gripper, characterized in that: include: Frame, suction cup set and clamp block; The frame comprises a first support arm and a second support arm both extending in a first direction, and a connecting arm connected between the first support arm and the second support arm; The suction cup group is installed on the connecting arm and is used for non-contact suction of workpieces; The two end side walls of the first support arm and the two end side walls of the second support arm are both equipped with the clamping blocks, and the inner side surface of the clamping blocks includes a limiting inclined surface and a step surface bent and connected along the adsorption direction of the suction cup group, and the step surface is located on the inner side of the limiting inclined surface; When the suction cup group absorbs the workpiece, the workpiece is limited in the handling space defined by the four limiting inclined surfaces, and the surface edge of the workpiece facing the suction cup group is attached to the step surface.

2. The suction-type handling gripper according to claim 1, characterized in that: The suction cup group includes two Bernoulli suction cups, and the two Bernoulli suction cups are arranged along the length direction of the connecting arm.

3. The suction-type handling gripper according to claim 1, characterized in that: Guide rails are provided along the first direction on both end side surfaces of the first support arm and both end side surfaces of the second support arm, and the position of the clamping block is adjustably arranged on the guide rails.

4. The suction-type handling gripper according to claim 3, characterized in that: The guide rail is a strip-shaped opening, and the adsorption-type transport suction device also includes a connecting bolt. A threaded hole is opened on any of the blocks, one end of the connecting bolt is limited on the outside of the strip-shaped opening, and the other end of the connecting bolt is passed through the strip-shaped opening and can be adjustably installed in the threaded hole.

5. The suction-type handling device according to any one of claims 1 to 4, characterized in that: The clamping block is provided with a clamping slot, and the clamping slot is clamped on the outer side of the first supporting arm or the second supporting arm.

6. The suction-type handling gripper according to claim 5, characterized in that: A concave arc surface is provided at the junction of the groove bottom wall of the clamping groove and the two groove walls arranged opposite to each other, and the arc surface extends along the first direction.

7. The suction-type handling device according to any one of claims 1 to 4, characterized in that: The inner side surface of the clamping block further includes a yielding inclined surface inclined in the same direction as the limiting inclined surface, and the step surface is located between the limiting inclined surface and the yielding inclined surface.

8. The suction-type transporting gripper according to claim 4, characterized in that: The first supporting arm and the second supporting arm are both provided with adjustment scales on the edges of the strip-shaped opening.

9. The suction-type transporting gripper according to claim 2, characterized in that: An air hole is provided on the outer wall of the Bernoulli suction cup, and an air hole plug is detachably mounted on the air hole.

10. The suction-type transporting gripper according to any one of claims 1 to 4, characterized in that: A quick connector is installed on the connecting arm, and the quick connector is used to connect to a compressed air source.

Images