Sheet positioning device

Abstract

The utility model discloses a kind of material sheet positioning devices, it is related to material positioning technical field.Wherein, material sheet positioning device includes first positioning part, first positioning piece and second positioning piece, in material sheet moving direction, first positioning part moves arrangement and has folding position and rising position on its moving track, when first positioning part moves from folding position to rising position, material sheet is positioned in preset point along the extension direction of conveying mechanism;First positioning piece and second positioning piece are respectively arranged in the both sides of conveying mechanism width direction, and all move arrangement;When first positioning part drives material sheet to move to preset point along the extension direction of conveying mechanism, first positioning piece, second positioning piece respectively and material sheet are pressed contact along the both sides of conveying mechanism width direction, realize to material sheet for fast positioning;Since the positioning process of first positioning part and first positioning piece, second positioning piece to material sheet is synchronous, significantly shorten the positioning time of material sheet, improve the positioning efficiency to material sheet.

Description

Technical Field

[0001] This utility model relates to the field of material positioning technology, and in particular to a material sheet positioning device. Background Technology

[0002] In the production process of photovoltaic silicon wafers, precise positioning of silicon wafers is a key step in cutting, sorting, and testing. Currently, silicon wafer positioning often uses a single structure, such as a fixed baffle or a cylinder-driven gripper, which results in insufficient positioning accuracy. Furthermore, when positioning silicon wafers in different directions, the positioning actions cannot be synchronized, thus affecting the positioning efficiency of silicon wafers. Utility Model Content

[0003] The main purpose of this invention is to propose a material positioning device, which aims to improve the problems of low efficiency and insufficient positioning accuracy of current positioning devices when positioning materials.

[0004] To achieve the above objectives, this utility model proposes a sheet positioning device for positioning a sheet conveyed by a conveying mechanism at a preset station, wherein the length direction of the conveying mechanism is defined as the first direction and the width direction is defined as the second direction, comprising:

[0005] The frame is located below the conveying mechanism;

[0006] A first positioning part is disposed on the frame. In the first direction, the first positioning part is movably arranged, and on its movement trajectory, it has a retracted position (folded downwards) and a raised position (raised upwards). The first positioning part moves from the retracted position to the raised position to position the material piece at a preset point along the extension direction of the conveying mechanism; and

[0007] The second positioning part is provided on the frame. The second positioning part includes a first positioning member and a second positioning member. In the second direction, the first positioning member and the second positioning member are respectively provided on opposite sides of the conveying mechanism, and the first positioning member and the second positioning member are movable along the second direction.

[0008] When the first positioning part drives the sheet to the preset position, the first positioning member and the second positioning member respectively press against the two sides of the sheet along the second direction.

[0009] In one embodiment, the sheet positioning device further includes a driving unit, which drives the first positioning unit, the first positioning member, and the second positioning member to operate synchronously.

[0010] The driving unit is configured to drive the first positioning unit to move the sheet to the preset position, and simultaneously drive the first positioning member and the second positioning member to press against the two sides of the sheet along the second direction.

[0011] In one embodiment, the driving unit includes:

[0012] Driver source; and

[0013] The driving element has two components, both of which are connected to the driving source. In the second direction, the driving source is used to drive the two driving elements to move synchronously in opposite directions.

[0014] The first positioning element and the second positioning element are respectively connected to the two driving elements to drive the first positioning element and the second positioning element to move synchronously towards or away from each other;

[0015] The first positioning part is connected to one of the driving components. When the two driving components drive the first positioning component and the second positioning component to contact the material sheet respectively, they simultaneously drive the first positioning part to move the material sheet to the preset position.

[0016] In one embodiment, the first positioning part includes:

[0017] A support frame, connected to the frame body, and the support frame is spaced above the drive member; and

[0018] A limiting block is movably connected to the support frame along the first direction. The support frame has a guide groove for guiding the limiting block to move along the first direction. The guide groove has a first end and a second end that are disposed opposite to each other, and the height of the first end is lower than the height of the second end. The limiting block moves from the first end to the second end, so that the limiting block moves from the retracted position to the raised position.

[0019] In one embodiment, the first positioning part further includes a transmission member connected to the limiting block and one of the driving members, for driving the limiting block to move between the retracted position and the raised position.

[0020] In one embodiment, the transmission member includes:

[0021] The drive roller is connected to the limiting block; and

[0022] An inclined block, connected to one of the driving components, is used to drive the inclined block to move along the second direction. The inclined block is located on the side of the transmission roller opposite to the material conveying direction, and the inclined block has an inclined surface on the side facing the transmission roller.

[0023] An elastic element extends along the first direction, with one end connected to the frame and the other end connected to the limiting block; the elastic element is used to ensure that the transmission roller and the inclined surface are always in abutting contact.

[0024] In one embodiment, the first positioning element includes:

[0025] A first bracket, movably connected to the frame along the first direction, is connected to one of the driving components; and

[0026] The first positioning wheel is provided, and at least two of the first positioning wheels are installed on the upper end of the first bracket.

[0027] In one embodiment, the first positioning element further includes:

[0028] A first height adjustment plate is installed at the upper end of the first bracket, and its height is adjustable relative to the first bracket in the height direction of the frame; and

[0029] A first left-right adjustment plate is installed on the upper end of the first height adjustment plate. In the second direction, the position of the first left-right adjustment plate relative to the first height adjustment plate is adjustable; the first positioning wheel is installed on the first left-right adjustment plate.

[0030] In one embodiment, the second positioning element includes:

[0031] A second bracket, movably connected to the frame along the first direction, is connected to another of the aforementioned driving components; and

[0032] At least two second positioning wheels are provided, and at least two second positioning wheels are installed on the upper end of the second bracket.

[0033] In one embodiment, the second positioning member further includes:

[0034] A second height adjustment plate is installed at the upper end of the second bracket, and its height is adjustable relative to the second bracket in the height direction of the frame; and

[0035] The second left and right adjustment plate is installed on the upper end of the second height adjustment plate. In the second direction, the position of the second left and right adjustment plate relative to the second height adjustment plate is adjustable; the second positioning wheel is installed on the second left and right adjustment plate.

[0036] This utility model material sheet positioning device includes a first positioning part and a second positioning part. The second positioning part includes a first positioning element and a second positioning element. In the moving direction of the material sheet, the first positioning part is movably arranged and has a retracted position and a raised position on its moving trajectory. When the first positioning part moves from the retracted position to the raised position, it is used to position the material sheet at a preset point along the extension direction of the conveying mechanism. The first positioning element and the second positioning element are respectively located on opposite sides in the width direction of the conveying mechanism and are both movably arranged. When the first positioning part drives the material sheet to move along the extension direction of the conveying mechanism to the preset point, the first positioning element and the second positioning element respectively press against the two sides of the material sheet along the width direction of the conveying mechanism, thereby realizing the rapid positioning of the material sheet on the conveying mechanism. Since the positioning process of the material sheet by the first positioning part and the first and second positioning elements is carried out synchronously, the positioning time required for the material sheet is significantly shortened, and the positioning efficiency of the material sheet is improved. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the overall structure of the material positioning device of this utility model;

[0039] Figure 2 This utility model relates to a material positioning device. Figure 1 Another perspective illustration;

[0040] Figure 3 This utility model relates to a material positioning device. Figure 1 Another perspective illustration;

[0041] Figure 4 This is a schematic diagram of the first positioning part of the material positioning device of this utility model;

[0042] Figure 5 This utility model relates to a material positioning device. Figure 4 Another perspective illustration;

[0043] Figure 6 This utility model relates to a material positioning device. Figure 4 Another perspective illustration;

[0044] Figure 7 This utility model relates to a material positioning device. Figure 6 Enlarged schematic diagram of the structure at point A in the middle.

[0045] Explanation of icon numbers:

[0046] 1. Frame;

[0047] 2. First positioning part; 21. Support frame; 211. Guide groove; 2111. First end; 2112. Second end; 22. Limiting block; 221. Guide wheel; 23. Transmission component; 231. Transmission roller; 232. Inclined block; 2321. Inclined surface; 233. Elastic component;

[0048] 3. Second positioning part; 31. First positioning component; 311. First bracket; 312. First positioning wheel; 313. First height adjustment plate; 3131. First vertical adjustment hole; 314. First left-right adjustment plate; 3141. First left-right adjustment hole; 32. Second positioning component; 321. Second bracket; 322. Second positioning wheel; 323. Second height adjustment plate; 3231. Second vertical adjustment hole; 324. Second left-right adjustment plate; 3241. Second left-right adjustment hole;

[0049] 4. Drive unit; 41. Drive source; 42. Drive component.

[0050] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0051] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0052] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0053] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0054] In the production process of photovoltaic silicon wafers, precise positioning of silicon wafers is a key step in cutting, sorting, and testing. Currently, silicon wafer positioning often uses a single structure, such as a fixed baffle or a cylinder-driven gripper, which results in insufficient positioning accuracy. Furthermore, when positioning silicon wafers in different directions, the positioning actions cannot be synchronized, thus affecting the positioning efficiency of silicon wafers.

[0055] Based on this, refer to Figure 1 , Figure 2 , Figure 3 As shown, this application provides a sheet positioning device for positioning a sheet conveyed by a conveying mechanism at a preset station. The length direction of the conveying mechanism, i.e., the direction of sheet movement, is defined as the first direction, and the width direction is defined as the second direction. The device includes a frame 1, a first positioning part 2, and a second positioning part 3; wherein, as... Figure 1 As shown, the conveying mechanism includes two conveyor belts, which are arranged at intervals along a second direction and both conveyor belts extend along a first direction. The material sheet is placed on the upper surface of the two conveyor belts, thereby conveying the material sheet along the first direction through the conveying mechanism. In this solution, the conveying mechanism is not shown in the figure. The first positioning part 2 is located between the two conveyor belts and is mounted on the frame 1 along the first direction. On the movement trajectory of the first positioning part 2, the first positioning part 2 can move to a retracted position below the conveying mechanism and move upward to a raised position above the conveying mechanism. When the first positioning part 2 moves from the retracted position to the raised position along the first direction, it can prevent the material sheet on the conveying mechanism from continuing to move forward with the conveying mechanism. That is, the side of the first positioning part 2 facing the material sheet abuts against the side of the material sheet, and the material sheet conveyed on the conveying mechanism is moved to a preset position by the movement of the first positioning part 2.

[0056] It is understood that in the second direction, the first positioning member 31 and the second positioning member 32 are located on opposite sides of the conveying mechanism, and the distance between the first positioning member 31 and the second positioning member 32 and the conveying mechanism is the same. This enables the first positioning member 31 and the second positioning member 32 to move in opposite directions to press against the material on both sides of the material in the second direction when the first positioning part 2 moves the material to the preset position, and thus achieves positioning and centering of the material in the second direction.

[0057] In this embodiment, the second positioning part 3 includes a first positioning element 31 and a second positioning element 32, and both the first positioning element 31 and the second positioning element 32 are movably installed on the frame 1 along the second direction. The first positioning element 31 and the second positioning element 32 are respectively located on opposite sides of the conveying mechanism along the second direction. The first positioning part 2 is used to position the material piece at a preset point in the first direction, and the first positioning element 31 and the second positioning element 32 are used to position and center the material piece located on the conveying mechanism in the second direction. Thus, the material piece is accurately positioned at the preset work station through the first positioning part 2, the first positioning element 31 and the second positioning element 32 for subsequent cutting, sorting, inspection and other processes.

[0058] In this embodiment, the conveying mechanism has a feeding end and a discharging end that are arranged opposite to each other in the extension direction. The material sheet moves from the feeding end to the discharging end in the first direction. In the first direction, the first positioning part 2 is in the first position when it is in the retracted position and in the second position when it is in the raised position. The first position is on the side opposite to the feeding end of the second position. That is, when the first positioning part 2 moves from the retracted position to the raised position, it moves in the opposite direction to the moving direction of the material sheet.

[0059] In this embodiment, the process of positioning the sheet is as follows: When the conveying mechanism drives the sheet to move close to the first positioning part 2, it controls the first positioning part 2 to move from the retracted position to the raised position, and simultaneously drives the first positioning member 31 and the second positioning member 32 to move towards the conveying mechanism, so that when the first positioning part 2 drives the sheet on the conveying mechanism to move along the first direction to the preset position, the first positioning member 31 and the second positioning member 32 respectively press against (or nearly contact) the two sides of the sheet along the second direction, thereby positioning the sheet on the conveying mechanism at the preset position; because the first positioning part 2 and the second positioning member 32... The first positioning component 31 and the second positioning component 32 operate synchronously to position the material pieces on the conveying mechanism in the first and second directions respectively, thereby significantly shortening the positioning time of the material pieces on the conveying mechanism. The material pieces conveyed on the conveying mechanism can be quickly positioned at the preset work position, thereby improving the positioning efficiency of the material pieces. At the same time, the material pieces are positioned in the first direction by the first positioning part 2, and in the second direction by the first positioning component 31 and the second positioning component 32. Through the coordinated cooperation of the first positioning part 2, the first positioning component 31 and the second positioning component 32, the positioning accuracy of the material pieces can be significantly improved.

[0060] It is understandable that in the first direction, when the first positioning part 2 moves the material sheet to the preset position, the conveying mechanism can be controlled to stop running, so as to prevent the material sheet from being blocked by the first positioning part 2 and unable to continue moving towards the discharge end, thereby causing unnecessary wear between the material sheet and the conveying mechanism, and causing the first positioning part 31 and the second positioning part 32 to move towards each other and squeeze the material sheet, resulting in the material sheet breaking.

[0061] In this embodiment, after the material sheet completes the corresponding processing steps at the preset work station, the first positioning part 2 is controlled to move from the raised position to the retracted position, so that the first positioning part 2 moves downward to the bottom of the conveying mechanism, thereby the first positioning no longer blocks the material sheet from moving towards the discharge end with the conveying mechanism; and simultaneously drives the first positioning member 31 and the second positioning member 32 to move in a direction away from each other, so as to release the positioning of the material sheet along the second direction. At this time, the conveying mechanism is controlled to run, so as to convey the processed material sheet to the next process.

[0062] Reference Figure 1 , Figure 2 , Figure 3 As shown, in one embodiment of this application, the sheet positioning device further includes a driving unit 4, which drives the first positioning unit 2, the first positioning member 31 and the second positioning member 32 to move synchronously; the driving unit 4 is configured to drive the first positioning unit 2 to move the sheet to a preset position, and simultaneously drive the second positioning member 32 to press against the two sides of the sheet along the second direction.

[0063] In this embodiment, the driving unit 4 drives the first positioning unit 2, the second positioning element 32 and the second positioning element 32 to work synchronously and collaboratively, respectively in the first direction and the second direction to position the material piece on the conveying mechanism, thereby positioning the material piece at the preset work station. During the positioning process of the material piece, there is no idle waiting time, which significantly shortens the time required for positioning the material piece and improves the positioning efficiency of the material piece.

[0064] Reference Figure 1 , Figure 2 , Figure 3 As shown, in one embodiment of this application, the driving unit 4 includes a driving source 41 and a driving member 42. There are two driving members 42, and both driving members 42 are driven by the driving source 41. In the second direction, the driving source 41 is used to drive the two driving members 42 to move synchronously in opposite directions, that is, to drive the two driving members 42 to move towards each other or away from each other synchronously in the second direction.

[0065] In this embodiment, the first positioning member 31 and the second positioning member 32 are respectively connected to the two driving members 42, and are used to drive the first positioning member 31 and the second positioning member 32 to move towards each other or away from each other along the second direction through the two driving members 42; when the first positioning member 31 and the second positioning member 32 move towards each other along the second direction, they are used to position and center the material piece located on the conveying mechanism along the second direction; when the first positioning member 31 and the second positioning member 32 move away from each other along the second direction, they are used to release the positioning of the material piece along the second direction.

[0066] In this embodiment, the first positioning part 2 is connected to one of the driving members 42. When the two driving members 42 drive the first positioning member 31 and the second positioning member 32 to press against the material sheet, the driving member 42 connected to the first positioning part 2 synchronously drives the first positioning part 2 to move from the retracted position to the raised position, that is, to drive the material sheet located on the conveying mechanism to move to the preset position, thereby realizing the positioning of the material sheet in the first direction.

[0067] In this embodiment, a specific structural composition of the driving source 41 and the driving component 42 is provided, such as... Figure 1 , Figure 2 , Figure 3As shown, a belt unit is installed on the frame 1, and the belt unit extends along the second direction. The belt unit includes two pulleys and a belt. One of the pulleys is driven by a drive source 41. For example, the drive source 41 can be a motor. The motor is communicatively connected to a controller. The controller controls the motor and drives the belt to move. It can be understood that along the first direction, the belt is divided into a first sub-belt and a second sub-belt (the first sub-belt and the second sub-belt are connected end to end to form the belt). The first sub-belt constitutes one of the drive components 42, and the second sub-belt constitutes the other drive component 42. When the drive source 41 drives the belt to run, the first sub-belt and the second sub-belt move synchronously in opposite directions in the second direction.

[0068] In this embodiment, the first positioning member 31 can be connected to one of the first sub-belt and the second sub-belt, and the second positioning member 32 can be connected to the other of the first sub-belt and the second sub-belt. This enables the belt to run through the drive source 41, and enables the first positioning member 31 and the second positioning member 32 to move towards or away from each other along the second direction, thereby moving closer to or away from the material sheet.

[0069] In this embodiment, the first positioning part 2 is connected to one of the first sub-belt and the second sub-belt. When the first positioning member 31 and the second positioning member 32 move along the second direction to press against the two sides of the sheet, one of the first sub-belt and the second sub-belt simultaneously drives the first positioning part 2 to move the sheet along the first direction to the preset position.

[0070] Reference Figure 2 As shown, in one embodiment of this application, the first positioning part 2 includes a support frame 21 and a limiting block 22; wherein, the support frame 21 is fixedly connected to the frame 1, and the support frame 21 is spaced above the driving member 42, that is, the arrangement of the support frame 21 does not affect the operation of the belt unit; as Figure 4 , Figure 5 , Figure 6 As shown, the limiting block 22 is movably mounted on the support frame 21 along the first direction, and the support frame 21 has a guide groove 211 for guiding the limiting block 22 to move along the first direction, as shown. Figure 4 As shown, the limiting block 22 is provided with guide wheels 221 that are movably assembled in the guide groove 211. In the first direction, along the length direction of the guide groove 211, there are a first end 2111 and a second end 2112 that are arranged opposite to each other, and the height of the first end 2111 is lower than the height of the second end 2112; as shown Figure 4 , Figure 5As shown, when the guide wheel 221 is at the first end 2111 in the guide groove 211, the limiting block 22 is in the retracted position (at this time, the limiting block 22 is located below the material sheet and does not hinder the material sheet from moving with the conveying mechanism). When the guide wheel 221 is at the second end 2112 in the guide groove 211, the limiting block 22 is in the raised position (at this time, the upper end of the limiting block 22 extends upward beyond the upper surface of the material sheet to prevent the material sheet from moving with the conveying mechanism).

[0071] It is understandable that when the limiting block 22 moves relative to the support frame 21 in the first direction, that is, when the guide wheel 221, which is mounted in the guide groove 211, moves from the first end 2111 to the second end 2112, a slope is formed between the first end 2111 and the second end 2112 because the height of the first end 2111 in the guide groove 211 is lower than the height of the second end 2112. Therefore, when the limiting block 22 moves from the first end 2111 to the second end 2112, the limiting block 22 is driven to move upward continuously under the cooperation of the guide wheel 221 and the slope in the guide groove 211. When the guide wheel 221 moves from the first end 2111 to the second end 2112, the limiting block 22 moves from the retracted position to the raised position. At this time, the upper end of the limiting block 22 extends upward at least partially beyond the upper surface of the material sheet, which is used to drive the material sheet located on the conveying mechanism to move to the preset point.

[0072] In this embodiment, when the limiting block 22 is in the retracted position, the upper end of the limiting block 22 is located close to the lower surface of the material sheet. During the initial short period of movement of the limiting block 22 along the first direction, the limiting block 22 can be driven to move upward by the cooperation of the guide wheel 221 and the guide groove 211, so that the upper end of the limiting block 22 exceeds the height of the upper surface of the material sheet. Thus, the limiting block 22 and one side of the material sheet abut against each other to drive the material sheet to move towards the preset point along the first direction.

[0073] In this embodiment, after the corresponding processing steps are completed on the sheet material at the preset work station, the limiting block 22 is driven to move in the opposite direction relative to the support frame 21, that is, the guide wheel 221 is driven to move from the second end 2112 to the first end 2111 in the guide groove 211, thereby causing the limiting block 22 to move back to the position below the sheet material. At this time, the control conveying mechanism is started to operate, so as to convey the processed sheet material to the next process through the conveying mechanism.

[0074] In this embodiment, an additional chute structure (not shown in the figure) for guiding the limiting block 22 can also be provided on the support frame 21 to further improve the stability of the limiting block 22 when it moves relative to the support frame 21.

[0075] Reference Figure 4 , Figure 5, Figure 6 As shown, in one embodiment of this application, the first positioning part 2 further includes a transmission member 23, which is connected to the limiting block 22 and one of the driving members 42, and is used to drive the limiting block 22 to move between the retracted position and the raised position.

[0076] In this embodiment, the transmission member 23 is used to transmit the driving force of one of the driving members 42 (first sub-belt or second sub-belt) to the limiting block 22, and drive the limiting block 22 to move relative to the support frame 21 along the first direction, thereby enabling the limiting block 22 to move between the retracted position and the raised position.

[0077] Understandably, when the first positioning member 31 and the second positioning member 32 are driven by the two driving members 42 and respectively press against the two sides of the material sheet along the second direction, one of the driving members 42 also drives the limiting block 22 to move from the retracted position to the raised position through the transmission member 23, and drives the material sheet located on the conveying mechanism to move along the first direction to the preset point.

[0078] Reference Figure 6 As shown, in one embodiment of this application, the transmission member 23 includes a transmission roller 231, an inclined block 232, and an elastic member 233; wherein, as Figure 4 As shown, the transmission roller 231 is connected to the limiting block 22, and the axial direction of the rotating roller extends along the height direction of the frame 1; the inclined block 232 is connected to one of the driving members 42, and is driven by the driving member 42 to move along the second direction, as shown. Figure 4 As shown, the inclined block 232 is located on the side of the transmission roller 231 opposite to the material conveying direction, as... Figure 5 As shown, the inclined block 232 has an inclined surface 2321 on the side facing the drive roller 231, as... Figure 6 As shown, an elastic element 233 is provided between the limiting block 22 and the support frame 21. One end of the elastic element 233 is connected to the limiting block 22, and the other end is connected to the support frame 21. Under the action of the elastic element 233, the limiting block 22 is always subjected to an elastic force from the elastic element 233, and this elastic force has a tendency to drive the limiting block 22 from the retracted position to the raised position (the elastic element 233 is in a stretched state), thereby ensuring that the inclined surface 2321 provided on the inclined block 232 can always be in abutting contact with the peripheral surface of the transmission roller 231 (e.g., Figure 5 (As shown); when the first positioning member 31 and the second positioning member 32 move toward each other under the action of their corresponding driving member 42, the inclined block 232 moves along the direction shown by the corresponding driving member 42. Figure 5 Move from left to right, as shown Figure 5As shown, when the inclined block 232 moves from left to right, the pressure on the transmission roller 231 (i.e., the limiting block 22) from the inclined block 232 gradually decreases. Under the action of the elastic member 233, the limiting block 22 moves from the retracted position to the raised position. When the first positioning member 31 and the second positioning member 32 move to press against the two sides of the material sheet along the second direction, the limiting block 22 drives the material sheet located on the conveying mechanism along the first direction to the preset position.

[0079] It is understandable that the inclined block 232 and the driving member 42 connected to the second positioning member 32 can be connected (specifically depending on the inclination direction of the inclined surface on the inclined block), because during the positioning of the material sheet on the conveying mechanism, in the second direction, the movement direction of the second positioning member 32 and the inclined block 232 is the same; therefore, the inclined block 232 and the driving member 42 corresponding to the second positioning member 32 can be connected. Figure 5 As shown, after the sheet material completes the corresponding process operation at the preset station, it is necessary to release the positioning of the sheet material. At this time, it is necessary to control the drive unit 42 to drive the corresponding first positioning unit 31 and second positioning unit 32 to move in a direction away from each other. At this time, the inclined block 232 of the drive unit 42 corresponding to the second positioning unit 32 moves along the same direction. Figure 5 The material moves from right to left, causing the drive roller 231 to be squeezed more and more by the inclined block 232. This forces the limiting block 22 to move from the raised position to the retracted position (further compressing the elastic element 233) to release the positioning of the material in each direction.

[0080] It is understandable that the length of the inclined surface 2321 on the inclined block 232 should satisfy the following: when the limit block 22 moves from the retracted position to the raised position, or from the raised position to the retracted position, the transmission roller 231 can always be in abutting contact with the inclined surface 2321 on the inclined block 232 under the action of the elastic element 233.

[0081] In this embodiment, in order to reduce the frictional resistance between the inclined block 232 and the transmission roller 231, the transmission roller 231 can be rotatably mounted on the limiting block 22. This allows the transmission roller 231 to rotate relative to the limiting block 22 under the action of friction when there is relative movement between the transmission roller 231 and the inclined block 232, thereby converting static friction into rolling friction and reducing the frictional resistance between the transmission roller 231 and the inclined block 232.

[0082] In this embodiment, since the vertical height of the limiting block 22 changes when it moves from the retracted position to the raised position, the length of the transmission roller 231 should satisfy the following condition: when the limiting block 22 is in the retracted or raised position, the transmission roller 231 can make contact with the inclined surface 2321 on the inclined block 232; Figure 7As shown, one end of the elastic element 233 is connected to the limit block 22 by means of a hook, and the other end of the elastic element 233 is also connected to the support frame 21 by means of a hook.

[0083] In this embodiment, since the inclined block 232 is constantly squeezed by the transmission roller 231 during the movement along the second direction, in order to ensure the stability of the inclined block 232 when it moves along the second direction (to ensure that the movement trajectory of the inclined block 232 is a straight line), the inclined block 232 can be slidably mounted on the support frame 21. That is, the support frame 21 is provided with a groove extending along the second direction, and the inclined block 232 has a sliding block slidably assembled in the groove. This enables the inclined block 232 to move along a preset trajectory when one of the driving members 42 drives the inclined block 232 to move along the second direction.

[0084] Reference Figure 2 As shown, in one embodiment of this application, the first positioning member 31 includes a first bracket 311 and a first positioning wheel 312. The first bracket 311 is movably connected to the frame 1 along a second direction. A slide rail (not shown in the figure) is provided on the frame 1 to guide the first bracket 311 to slide along a predetermined trajectory. The first bracket 311 is connected to one of the driving members 42. For example, the first bracket 311 and one of the driving members 42 can be connected by a belt clamp, thereby realizing that when the driving member 42 moves, the first bracket 311 moves relative to the frame 1 along the second direction through the belt clamp. The first positioning wheel 312 is installed on the upper end of the first bracket 311, and the center line of the axis of the first positioning wheel 312 extends along the height direction of the frame 1. When the driving member 42 drives the first positioning member 31 to move toward the conveying mechanism, the outer peripheral side of the first positioning wheel 312 and the side of the material sheet located on the conveying mechanism make abutting contact, thereby realizing the positioning and centering of the material sheet located on the conveying mechanism along the second direction.

[0085] In this embodiment, at least two first positioning wheels 312 are provided to improve the stability of positioning the sheet along the second direction. When at least two first positioning wheels 312 are provided, the at least two first positioning wheels 312 should be on the same straight line along the first direction. It is understood that an elastic material can be wrapped around the outer periphery of the first positioning wheel 312 to avoid scratching the sheet when the first positioning wheel 312 contacts the sheet on one side along the second direction.

[0086] In this embodiment, the two sides of the material sheet protrude outward from the conveying mechanism along the second direction. This enables the material sheet to be positioned and centered along the second direction by the first positioning wheel 312 pressing against the two sides of the material sheet along the second direction when the first support 311 moves toward the conveying mechanism under the action of the corresponding driving member 42.

[0087] Reference Figure 2 As shown in one embodiment of this application, the first positioning member 31 further includes a first height adjustment plate 313 and a first left-right adjustment plate 314. The first height adjustment plate 313 is installed on the upper end of the first support 311, and the height of the first height adjustment plate 313 relative to the first support 311 is adjustable in the height direction of the frame 1, so as to facilitate the adjustment of the height of the first positioning wheel 312 during assembly. The first left-right adjustment plate 314 is installed on the upper end of the first height adjustment plate 313, and the position of the first left-right adjustment plate 314 relative to the first height adjustment plate 313 is adjustable in the second direction. The first positioning wheel 312 is installed on the upper end surface of the first left-right adjustment plate 314, and at least part of the outer peripheral side of the first positioning wheel 312 protrudes outward from the first left-right adjustment plate 314, so as to ensure that when the first support 311 moves toward the conveying mechanism, it does not hinder the pressing of the outer peripheral side of the first positioning wheel 312 against the side of the material sheet, and realizes the positioning and centering of the material sheet in the second direction.

[0088] In this embodiment, the height of the first height adjustment plate 313 relative to the first bracket 311 is adjustable, so as to facilitate the adjustment of the height of the first positioning wheel 312 during assembly (different photovoltaic silicon wafers are very thin, basically within 0.2mm, and the change in thickness is not sensitive), so that when the first positioning wheel 312 presses against the side of the wafer, it can contact the center position of the side of the wafer as much as possible (rather than contacting the edge position of the side of the wafer), thereby increasing the contact area between the first positioning wheel 312 and the side of the wafer, thereby reducing the damage to the wafer during the positioning and centering process along the second direction.

[0089] In this embodiment, the position of the first left-right adjustment plate 314 relative to the first height adjustment plate 313 along the second direction is adjustable, thereby enabling positioning and centering of material pieces with different widths (or lengths). When the size of the material piece is large, the first left-right adjustment plate 314 is adjusted a certain distance away from the conveying mechanism; when the size of the material piece is small, the first left-right adjustment plate 314 is adjusted a certain distance closer to the conveying mechanism, thereby improving the flexibility and adaptability of the positioning device.

[0090] In this embodiment, as Figure 2As shown, a specific structure for an adjustable height first height adjustment plate 313 is provided. At least two bolt holes are provided at the upper end of the first bracket 311, and a corresponding number of first vertical adjustment holes 3131 are provided on the first height adjustment plate 313. Bolts are then sequentially inserted into the bolt holes and the first vertical adjustment holes 3131. The relative positions of the first height adjustment plate 313 and the first bracket 311 are locked by nuts, thereby maintaining the first height adjustment plate 313 at the currently adjusted height. When it is necessary to adjust the vertical height of the first height adjustment plate 313, the nuts are loosened, and the first height adjustment plate 313 is manually driven to move vertically. When it moves to the desired height, the nuts are tightened again to lock the first height adjustment plate 313 at the desired height.

[0091] In this embodiment, as Figure 2 , Figure 3 As shown, a specific structure is provided where the position of the first left and right adjustment plate 314 is adjustable, such as... Figure 3 As shown, a bolt hole is provided at the upper end of the first height adjusting plate 313, and a first left-right adjusting hole 3141 is provided on the first left-right adjusting plate 314. Then, bolts are sequentially inserted into the bolt hole and the first left-right adjusting hole 3141. The relative positions of the first left-right adjusting plate 314 and the first height adjusting plate 313 are locked by the nut, so that the first left-right adjusting plate 314 can be maintained in the current adjusted position. When it is necessary to adjust the position of the first left-right adjusting plate 314 along the second direction, the nut is loosened, and then the position of the first left-right adjusting plate 314 relative to the first height adjusting plate 313 along the second direction is manually adjusted until it is moved to the desired position. Then, the nut is tightened again to lock the first left-right adjusting plate 314 in the current desired position.

[0092] Reference Figure 2 As shown in one embodiment of this application, the second positioning member 32 includes a second bracket 321 and a second positioning wheel 322. The second bracket 321 is movably connected to the frame 1 along a second direction. A slide rail (not shown in the figure) is provided on the frame 1 to guide the second bracket 321 to slide along a predetermined trajectory. The second bracket 321 is connected to one of the driving members 42. For example, the second bracket 321 and one of the driving members 42 can be connected by a belt clamp, thereby realizing that when the driving member 42 moves, the second bracket 321 moves relative to the frame 1 along the second direction through the belt clamp. The second positioning wheel 322 is installed on the upper end of the second bracket 321, and the center line of the axis of the second positioning wheel 322 extends along the height direction of the frame 1. When the driving member 42 drives the second positioning member 32 to move toward the conveying mechanism, the outer peripheral side of the second positioning wheel 322 makes a pressing contact with the material piece located on the conveying mechanism, thereby realizing the positioning and centering of the material piece located on the conveying mechanism along the second direction.

[0093] In this embodiment, at least two second positioning wheels 322 are provided to improve the stability of positioning the sheet along the second direction. When at least two second positioning wheels 322 are provided, the at least two second positioning wheels 322 should be on the same straight line along the second direction. It is understood that an elastic material can be wrapped around the outer periphery of the second positioning wheel 322 to avoid scratching the sheet when the second positioning wheel 322 contacts one side of the sheet along the second direction.

[0094] In this embodiment, the two sides of the material sheet protrude outward from the conveying mechanism along the second direction. This enables the material sheet to be positioned and centered along the second direction by the second positioning wheel 322 pressing against the two sides of the material sheet along the second direction when the second support 321 moves toward the conveying mechanism under the action of the corresponding driving member 42.

[0095] Reference Figure 2 As shown in one embodiment of this application, the second positioning member 32 further includes a second height adjustment plate 323 and a second left-right adjustment plate 324. The second height adjustment plate 323 is installed on the upper end of the second bracket 321, and its height relative to the second bracket 321 is adjustable in the height direction of the frame 1, facilitating the adjustment of the height of the second positioning wheel 322 during assembly (different photovoltaic silicon wafers are very thin, basically within 0.2mm, and thickness variations are not sensitive). The second left-right adjustment plate 324 is installed on the upper end of the second height adjustment plate 323, and its position relative to the second height adjustment plate 323 is adjustable in the second direction. The second positioning wheel 322 is installed on the upper surface of the second left-right adjustment plate 324, and at least part of the outer periphery of the second positioning wheel 322 protrudes outward from the second left-right adjustment plate 324, so that when the second bracket 321 moves towards the conveying mechanism, it does not hinder the outer periphery of the second positioning wheel 322 from pressing against the side of the material sheet, and thus achieves positioning and centering of the material sheet along the second direction.

[0096] In this embodiment, the height of the second height adjustment plate 323 relative to the second bracket 321 is adjustable to meet the positioning and centering requirements for sheets of different thicknesses. When the sheet thickness is different, the height of the second positioning wheel 322 needs to be adjusted synchronously so that when the second positioning wheel 322 presses against the side of the sheet, it can contact the center position of the side of the sheet as much as possible (rather than the edge position of the side of the sheet), thereby increasing the contact area between the second positioning wheel 322 and the side of the sheet, thereby reducing the damage to the sheet during the positioning and centering process along the second direction.

[0097] In this embodiment, the position of the second left-right adjustment plate 324 relative to the second height adjustment plate 323 along the second direction is adjustable, thereby enabling positioning and centering of material pieces with different widths (or lengths). When the size of the material piece is large, the second left-right adjustment plate 324 is adjusted a certain distance away from the conveying mechanism; when the size of the material piece is small, the second left-right adjustment plate 324 is adjusted a certain distance closer to the conveying mechanism, thereby improving the flexibility and adaptability of the positioning device.

[0098] In this embodiment, as Figure 2 As shown, a specific structure for an adjustable second height adjustment plate 323 is provided. At least two bolt holes are provided at the upper end of the second bracket 321, and a corresponding number of second vertical adjustment holes 3231 are provided on the second height adjustment plate 323. Bolts are then sequentially inserted into the bolt holes and the second vertical adjustment holes 3231. The relative positions of the second height adjustment plate 323 and the second bracket 321 are locked by nuts, thus maintaining the second height adjustment plate 323 at the currently adjusted height. When it is necessary to adjust the vertical height of the second height adjustment plate 323, the nuts are loosened, and the second height adjustment plate 323 is manually driven to move vertically. When it moves to the desired height, the nuts are tightened again to lock the second height adjustment plate 323 at the desired height.

[0099] In this embodiment, as Figure 2 , Figure 3 As shown, a specific structure is provided where the position of the second left and right adjustment plate 324 is adjustable, such as... Figure 3 As shown, a bolt hole is provided at the upper end of the second height adjusting plate 323, and a second left and right adjusting hole 3241 is provided on the second left and right adjusting plate 324. Then, the bolt is passed through the bolt hole and the second left and right adjusting hole 3241 in sequence. The relative position of the second left and right adjusting plate 324 and the second height adjusting plate 323 is locked by the nut, so that the second left and right adjusting plate 324 can be maintained in the current adjusted position. When it is necessary to adjust the position of the second left and right adjusting plate 324 along the second direction, the nut is loosened, and then the position of the second left and right adjusting plate 324 relative to the second height adjusting plate 323 along the second direction is manually adjusted until it is moved to the desired position. Then, the nut is tightened again to lock the second left and right adjusting plate 324 in the current desired position.

[0100] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A sheet positioning device for positioning a sheet conveyed by a conveying mechanism at a preset station, wherein the length direction of the conveying mechanism is defined as the first direction and the width direction is defined as the second direction, characterized in that, include: The frame is located below the conveying mechanism; A first positioning part is disposed on the frame. In the first direction, the first positioning part is movably arranged, and on the movement trajectory of the first positioning part, the first positioning part has a retracted position that is folded down and a raised position that is raised up. The first positioning part moves from the retracted position to the raised position to position the material piece at a preset point along the extension direction of the conveying mechanism. as well as The second positioning part is provided on the frame. The second positioning part includes a first positioning member and a second positioning member. In the second direction, the first positioning member and the second positioning member are respectively provided on opposite sides of the conveying mechanism, and the first positioning member and the second positioning member are movable along the second direction. When the first positioning part drives the sheet to the preset position, the first positioning member and the second positioning member respectively press against the two sides of the sheet along the second direction.

2. The sheet positioning device as described in claim 1, characterized in that, The sheet positioning device further includes a driving unit, which drives the first positioning unit, the first positioning element, and the second positioning element to move synchronously. The driving unit is configured to drive the first positioning unit to move the sheet to the preset position, and simultaneously drive the first positioning member and the second positioning member to press against the two sides of the sheet along the second direction.

3. The sheet positioning device as described in claim 2, characterized in that, The drive unit includes: Driver source; and The driving element has two components, both of which are connected to the driving source. In the second direction, the driving source is used to drive the two driving elements to move synchronously in opposite directions. The first positioning element and the second positioning element are respectively connected to the two driving elements to drive the first positioning element and the second positioning element to move synchronously towards or away from each other; The first positioning part is connected to one of the driving components. When the two driving components drive the first positioning component and the second positioning component to contact the material sheet respectively, they simultaneously drive the first positioning part to move the material sheet to the preset position.

4. The sheet positioning device as described in claim 3, characterized in that, The first positioning unit includes: A support frame, connected to the frame body, and the support frame is spaced above the drive member; and A limiting block is movably connected to the support frame along the first direction. The support frame has a guide groove for guiding the limiting block to move along the first direction. The guide groove has a first end and a second end that are disposed opposite to each other, and the height of the first end is lower than the height of the second end. The limiting block moves from the first end to the second end, so that the limiting block moves from the retracted position to the raised position.

5. The sheet positioning device as described in claim 4, characterized in that, The first positioning part further includes a transmission component, which is connected to the limiting block and one of the driving components, for driving the limiting block to move between the retracted position and the raised position.

6. The sheet positioning device as described in claim 5, characterized in that, The transmission component includes: The drive roller is connected to the limiting block; and An inclined block, connected to one of the driving components, is used to drive the inclined block to move along the second direction. The inclined block is located on the side of the transmission roller opposite to the material conveying direction, and the inclined block has an inclined surface on the side facing the transmission roller. An elastic element extends along the first direction, with one end connected to the frame and the other end connected to the limiting block; the elastic element is used to ensure that the transmission roller and the inclined surface are always in abutting contact.

7. The sheet positioning device as described in claim 3, characterized in that, The first positioning element includes: A first bracket, movably connected to the frame along the first direction, is connected to one of the driving components; and The first positioning wheel is provided, and at least two of the first positioning wheels are installed on the upper end of the first bracket.

8. The sheet positioning device as described in claim 7, characterized in that, The first positioning element further includes: A first height adjustment plate is installed at the upper end of the first bracket, and its height is adjustable relative to the first bracket in the height direction of the frame; and A first left-right adjustment plate is installed on the upper end of the first height adjustment plate. In the second direction, the position of the first left-right adjustment plate relative to the first height adjustment plate is adjustable; the first positioning wheel is installed on the first left-right adjustment plate.

9. The sheet positioning device as described in claim 3, characterized in that, The second positioning element includes: A second bracket, movably connected to the frame along the first direction, is connected to another of the aforementioned driving components; and At least two second positioning wheels are provided, and at least two second positioning wheels are installed on the upper end of the second bracket.

10. The sheet positioning device as described in claim 9, characterized in that, The second positioning element also includes: A second height adjustment plate is installed at the upper end of the second bracket, and its height is adjustable relative to the second bracket in the height direction of the frame; and The second left and right adjustment plate is installed on the upper end of the second height adjustment plate. In the second direction, the position of the second left and right adjustment plate relative to the second height adjustment plate is adjustable; the second positioning wheel is installed on the second left and right adjustment plate.

Images