CN211112214U - Device for replacing positioning column of graphite boat - Google Patents

Abstract

The utility model discloses a device for changing graphite boat reference column belongs to solar cell and makes technical field. The utility model provides a device is changed to reference column, including two upper and lower holding plates that can stretch into between the boat page or leaf, on, be connected with guide arm and screw thread depression bar between the holding plate down, two blocks of clamp plates of screw thread depression bar drive are close to or deviate from, utilize the guide arm to lead to it, the breach that the corresponding briquetting of being equipped with of upper and lower holding plate and holding this briquetting, drive the briquetting through adjusting the screw thread depression bar and go into or extrude the reference column from the boat page or leaf middling pressure, can realize the quick replacement of single damage reference column, improved work efficiency, be favorable to the increase of production.

Description

Device for replacing positioning column of graphite boat

Technical Field

The utility model belongs to the technical field of solar cell makes, more specifically says, relates to a device for changing graphite boat reference column.

Background

With the maturity of photovoltaic solar cell manufacturing technology, higher requirements are put on the quality of the cell. The positioning column is a device for supporting and fixing the battery piece in the process of PECVD (plasma enhanced chemical vapor deposition) on the graphite boat. Can inject the silicon chip into graphite boat in the tubular PECVD coating film production process of solar cell production, take out the silicon chip after the coating film is finished, insert the in-process of getting repeatedly, cause the damage to the reference column of graphite boat bottom easily, need change the reference column after the reference column damages. At present, a method for replacing a positioning column is to empty a silicon wafer in a graphite boat, disassemble the graphite boat, take down a boat page with a damaged positioning column, take the positioning column to a machine for disassembling the positioning column to disassemble the damaged positioning column, and finally assemble the graphite boat after the positioning column is installed. The maintenance mode of the positioning column of the graphite boat not only wastes time and labor, but also influences the yield and has low efficiency.

As in patent application No.: 2011100823999, filing date: in 2011, 4 months and 1 day, the invention and creation name is as follows: a graphite boat positioning column assembling method is characterized in that a boat page is placed on a base table-board, and a positioning hole on the boat page is aligned with a central hole on a base table-board; positioning columns are arranged above the positioning holes of the boat pages and below the pressure rods, and the positioning columns are coaxial with the positioning holes and the pressure rods; calibrating the distance A from a limit nail to the top of the transmission box and the distance B from the bottom of a pressure rod to the top of the positioning column in the pressure point device to be equal to the sum of the height B and the height C of the column body of the positioning column; and rotating a rocker of the pressure point device, driving the pressure rod to move downwards by the rocker, and pressing the positioning column into the positioning hole of the boat page. According to the scheme, the sizes of the positioning hole and the positioning column on the boat page and the matching tolerance of the positioning hole and the positioning column are controlled, the existing pressure point device is combined, the positioning column is pressed into the positioning hole, the positioning column and the positioning hole are in interference fit, the assembling process requirement is met, the boat page needs to be taken down and placed on the base table top, the pressure point device is used for disassembling, and the assembling process is not simplified enough.

Again as in patent application No.: 2018214988693, filing date: in 2018, 9, 13 months, the name of invention creation is: a graphite boat positioning column assembling method is characterized in that a clamping point replacing machine die of the scheme comprises an upper die assembly, a middle die assembly and a lower die assembly, a graphite boat of which a clamping point is to be replaced is placed in a graphite boat carrying platform on the middle die assembly during use, the upper die assembly unloads an old clamping point by using an upper die unloading column arranged on the upper die assembly, then the middle die assembly is displaced to a loading position, meanwhile, the lower die assembly is also lifted to a loading position, a loading device installs a new clamping point on the graphite boat, and the lower die assembly plays a role in supporting and positioning in the loading process. The device degree of automation is high, utilizes a plurality of unloading point posts on the last mould to uninstall the old stuck point on the graphite boat, can once only uninstall all old stuck points, but still need place the graphite boat of waiting to uninstall the stuck point on the microscope carrier on the well mould, assembles the graphite boat after installing the stuck point again, wastes time and energy, and efficiency is lower.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

The utility model discloses a device for changing graphite boat reference column has overcome among the prior art through getting empty whole boat silicon chip and has dismantled the inefficiency that the reference column brought, can realize the quick replacement of single reference column through the cooperation of top and bottom pressing plate, has improved work efficiency, is favorable to the increase of production.

2. Technical scheme

In order to achieve the above purpose, the utility model provides a technical scheme does:

the utility model discloses a device for changing graphite boat reference column, including upper press plate and the holding down plate that corresponds the setting from top to bottom, be connected with guide arm and screw thread depression bar between upper press plate and the holding down plate, the screw thread depression bar is used for driving upper press plate and holding down plate to be close to each other or deviate from to lead two clamp plates through the guide arm; the lower pressing plate is provided with a pressing block, the corresponding position of the upper pressing plate is provided with a notch, and the positioning column is pressed into or pressed out of the boat page through the adjusting threaded pressing rod.

As a further improvement, the upper pressing plate or the lower pressing plate is provided with a threaded hole, and the threaded pressing rod is arranged on the corresponding lower pressing plate or the upper pressing plate and rotates relative to the lower pressing plate or the upper pressing plate.

As a further improvement, the upper pressing plate is provided with a threaded hole, and the corresponding lower pressing plate is provided with a through hole.

As a further improvement, the upper platen includes the upper reference plate that stretches into in the boat page or leaf and the last baffle that is located the boat page or leaf outside, and the lower pressure plate is located the outer lower baffle of boat page or leaf including stretching into the lower reference plate of boat page or leaf.

As a further improvement, the width of the upper and lower reference plates is gradually reduced along the direction of extending into the boat page or leaf, and the upper reference plate is provided with a notch at the end where the width is reduced.

As a further improvement, the upper reference plate and the lower reference plate are isosceles triangle flat plate structures.

As a further improvement of the utility model, the included angle formed by the notch on the upper reference plate is an arc angle.

As a further improvement of the utility model, the notch is a U-shaped notch or a circular notch.

As a further improvement of the utility model, the height of the pressing block is not less than the thickness of the boat page.

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:

(1) the utility model discloses a device for changing graphite boat reference column, including two upper and lower holding plates that can stretch into between the boat page or leaf, on, be connected with guide arm and screw thread depression bar between the holding plate down, two clamp plates of screw thread depression bar drive are close to or deviate from, utilize the guide arm to its direction, the corresponding breach that is equipped with the briquetting and holds this briquetting of top and bottom pressing plate, drive the briquetting through adjusting the screw thread depression bar and go into or extrude the reference column from the boat page or leaf middling pressure, can realize the quick replacement of single damage reference column, improved work efficiency, be favorable to the increase of production.

(2) The utility model discloses a device for changing graphite boat reference column, top board are including stretching into the last benchmark board in the boat page or leaf and being located the last baffle outside the boat page or leaf, and the lower baffle of lower benchmark board in stretching into the boat page or leaf is located the outer lower baffle of boat page or leaf, and baffle card plays the positioning action at boat page or leaf edge about utilizing to make the quick accurate boat of impressing of briquetting downthehole.

(3) The utility model discloses a device for changing graphite boat reference column, the breach is seted up at the one end that its width reduces to the upper standard board, and this department contained angle is the smooth arc angle of curve to reduce the stress concentration that the top board produced the boat page or leaf, thereby effectively prevent boat page or leaf brittle fracture, improve the safety and stability performance.

Drawings

FIG. 1 is a schematic view of a graphite boat according to the present invention;

FIG. 2 is a schematic structural diagram of an apparatus for replacing positioning columns of a graphite boat in example 1;

FIG. 3 is a schematic structural diagram of an apparatus for replacing positioning columns of a graphite boat in example 2;

FIG. 4 is a schematic structural diagram of an apparatus for replacing positioning posts of a graphite boat in example 3;

FIG. 5 is a top view of the apparatus for replacing positioning posts of a graphite boat in example 4;

FIG. 6 is a right side view of the apparatus for replacing positioning posts of a graphite boat in accordance with example 4;

fig. 7 is a front view of the apparatus for replacing positioning columns of graphite boats in embodiment 4.

The reference numerals in the schematic drawings illustrate:

100. an upper pressure plate; 110. a guide bar; 111. a mounting seat; 112. a guide rod sleeve 113 and an upper baffle plate; 120. an upper datum plate; 121. a notch; 200. a lower pressing plate; 210. a threaded compression bar; 211. a lower baffle plate; 220. a lower datum plate; 221. briquetting; 300. a graphite boat; 310. boat pages; 311. and a positioning column.

Detailed Description

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples.

Example 1

Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of a graphite boat 300 according to this embodiment, the conventional graphite boat 300 includes a plurality of boat pages 310 arranged in parallel, each boat page 310 is connected and fixed by a ceramic connecting rod, boat holes are formed in the boat pages 310, and positioning posts 311 are installed in the boat holes. Since the silicon wafer is inserted into the graphite boat 300 during the tubular PECVD coating process, the positioning post 311 is damaged by repeated insertion, and thus the positioning post 311 needs to be replaced periodically.

The device for replacing the positioning column of the graphite boat comprises an upper pressure plate 100 and a lower pressure plate 200 which are arranged up and down correspondingly, wherein a guide rod 110 and a threaded pressure rod 210 are connected between the upper pressure plate 100 and the lower pressure plate 200, and the threaded pressure rod 210 is used for driving the upper pressure plate 100 and the lower pressure plate 200 to approach or depart from each other and guiding the two pressure plates through the guide rod 110; the lower pressing plate 200 is provided with a pressing block 221, a notch 121 is formed in the corresponding position of the upper pressing plate 100, and the positioning column 311 is pressed into or pressed out of the boat page 310 through the adjusting threaded pressing rod 210.

Further, in the present embodiment, the upper pressing plate 100 or the lower pressing plate 200 is provided with a threaded hole, and the threaded pressing rod 210 is mounted on the corresponding lower pressing plate 200 or the upper pressing plate 100 and rotates relative to the lower pressing plate 200 or the upper pressing plate 100. Specifically, in the present embodiment, the upper pressure plate 100 is provided with a threaded hole, the corresponding lower pressure plate 200 is provided with a through hole, and the threaded pressure rod 210 penetrates through the through hole and is used in cooperation with the threaded hole on the upper pressure plate 100.

In this embodiment, the pressing block 221 is a cylinder structure, the notch 121 may be a U-shaped notch or a circular notch, specifically, in this embodiment, the notch 121 is a circular hole, the diameter of the notch 121 is greater than the diameters of the pressing block 221 and the positioning column 311, when the positioning column 311 needs to be maintained or replaced, one end of the lower pressing plate 200, where the pressing block 221 is disposed, extends into a space between two adjacent boat pages 310, and the notch 121 on the upper pressing plate 100 is aligned with the positioning column 311 on the boat pages 310; when the distance is great between top board 100 and bottom board 200, the guide effect of usable guide arm 110 this moment, it is compelled to be close to top board 100 to manually promote bottom board 200, when the distance is close boat page 310 interval between top board 100 and bottom board 200, through rotatory screw depression bar 210 drive briquetting 221 on the bottom board 200 to the breach 121 motion on the top board 100, thereby make briquetting 221 stretch into in the breach 121, and press out reference column 311 from the boat hole on boat page 310, need not get empty whole boat silicon chip again, the maintenance duration of reference column 311 has been shortened greatly, realize quick replacement, and the work efficiency is improved, and is favorable to the increase of production.

In the embodiment, the thickness of the upper pressing plate 100 is smaller than the distance between two adjacent boat pages 310, and the sum of the heights of the lower pressing plate 200 and the pressing block 221 is also smaller than the distance between the adjacent boat pages 310, so that the pressing block 221 can extend into the boat pages 310 to eject the positioning columns 311. In this embodiment, when the height of the pressing block 221 is greater than the depth of the boat hole, the positioning column 311 can be completely pressed out of the boat page 310, but the height of the pressing block 221 is not too large, so that the positioning column 311 is prevented from scattering and losing when being ejected; when the height of the pressing block 221 is less than the depth of the boat hole 311, the positioning column 311 is not yet pressed out of the boat page 310 completely, and at this time, the positioning column 311 needs to be picked up from the boat hole by a tool such as tweezers or pliers, and preferably, the height of the pressing block 221 is not less than the thickness of the boat page 310.

Example 2

Referring to fig. 3, the structure of an apparatus for replacing positioning posts of a graphite boat in this embodiment is substantially the same as that of embodiment 1, further, the upper platen 100 in this embodiment includes an upper reference plate 120 extending into a boat page 310 and an upper baffle 113 located outside the boat page 310, and the lower platen 200 includes a lower baffle 211 located outside the boat page 310 and a lower reference plate 220 extending into the boat page 310. Specifically, in the present embodiment, the lower surface of the upper reference plate 120 and the lower surface of the upper baffle plate 113 are on the same reference line, and the upper surface of the upper baffle plate 113 is higher than the upper surface of the upper reference plate 120 to form a stop step, which abuts against the side wall of the boat page 310 to realize a positioning function; similarly, the upper surface of the lower baffle 211 is on the same reference line as the upper surface of the lower reference plate 220, and the lower surface of the lower baffle 211 is higher than the lower surface of the lower reference plate 220 to form a stopping step, which is perpendicular to the lower reference plate 220.

In embodiment 1, the notch 121 needs to be aligned with the positioning column 311 when the positioning column 311 is pressed out by using the pressing block 221, but since the distance between two adjacent boat sheets 310 is small, and the size of each boat sheet 310 is large, the specific position of the positioning column 311 is not easy to observe, in this embodiment, by setting the upper baffle 113 and the lower baffle 211, and making the distance from the upper baffle 113 to the center of the notch 121, the distance from the lower baffle 211 to the pressing block 221, and the distance from the positioning column 311 to the edge of the corresponding boat sheet 310 equal, in this way, in actual operation, the steps of the upper baffle 113 and the lower baffle 211 are respectively clamped at the edges of the upper boat sheet 310 and the lower boat sheet 310, it can be ensured that the notch 121 is aligned with the positioning column 311, and further rotating the threaded pressing rod 210 can make the pressing block 221 extend into the notch 121.

Example 3

Referring to fig. 4, the structure of the apparatus for replacing the positioning post of the graphite boat in this embodiment is substantially the same as that of embodiment 2, further, the widths of the upper reference plate 120 and the lower reference plate 220 are gradually reduced along the direction extending into the boat page 310, and one end of the upper reference plate 120 with the reduced width is provided with a notch 121.

Because connect fixedly through ceramic rod between each boat page or leaf 310, distance is limited between two adjacent ceramic rods in the coplanar, in order to avoid ceramic rod's hindrance, should control upper and lower reference plate's width be less than the distance between the adjacent ceramic rod, consequently, set up breach 121 in the one end that upper reference plate 120 width reduces, can avoid other parts on the boat page or leaf 310, thereby guarantee that the reference column 311 at each corner can all use the device of this embodiment to change, the reference column of this embodiment is changed device simple structure, and is small and handy, but the staff one-hand operation, and convenient use.

Specifically, in this embodiment, the upper reference plate 120 and the lower reference plate 220 are both isosceles triangle flat plate structures, the gap 121 is opened at the terminal of the upper reference plate 120 extending into the boat page 310, the gap 121 is a circular gap, the pressing block 221 is arranged at the corresponding terminal of the lower reference plate 220, the position of the positioning column 311 is observed first during use, and because the terminal of the reference plate is narrow, the terminal of the reference plate can be directly extended into the space between two adjacent boat pages 310 according to the observed position, the pressing block 221 can be helped to find the positioning column 311 rapidly, and the work efficiency is improved.

It should be noted that, because the boat page 310 of the graphite boat is brittle and easy to wear and break, the upper platen 100 and the lower platen 200 should have a larger contact area with the boat page 310 to reduce the pressure applied around the boat hole, preferably, the included angle of the end of the upper reference plate 120 with the notch 121 is an arc angle, the arc angle curve is smooth, and when the pressing block 221 aligns with the boat hole to press the positioning column 311, the upper reference plate 120 with the arc angle can reduce the stress concentration generated on the boat page 310, thereby effectively preventing the brittle fracture of the boat page 310 and improving the safety and stability.

Example 4

With reference to fig. 5 to 7, the structure of the apparatus for replacing the positioning column of the graphite boat in this embodiment is substantially the same as that of embodiment 3, except that a notch 121 is formed at the end of the upper reference plate 120 extending into the boat page 310 in this embodiment, the notch 121 is a U-shaped notch, the upper surface of the lower baffle 211 in this embodiment is lower than the upper surface of the lower reference plate 220, and the space between the upper and lower pressing plates is increased, so that a worker can observe the distance that the lower pressing plate 200 moves along the guide rod 110 to the upper pressing plate 100, and observe the specific position of the positioning column 311. Specifically, in this embodiment, the through holes are respectively formed in the two sides of the threaded hole of the upper platen 100, the guide rod sleeves 112 are arranged in the through holes, the two guide rods 110 arranged in parallel pass through the guide rod sleeves 112, the other ends of the guide rods 110 are fixedly connected with the lower platen 200 at the bottom, the upper platen and the lower platen are fixed by the two guide rods 112, the lower platen 200 is slightly pushed to move towards the upper platen 100 along the guide rods 110, the two guide rods 110 are arranged in parallel on the two sides of the threaded compression rod 210, a better guiding effect is achieved, and the stability of the replacing device can be improved.

The specific replacement process of the positioning post 311 is as follows: when the positioning column 311 is disassembled, the notch 121 is aligned with the damaged positioning column 311, the pressing block 221 is driven to move towards the positioning column 311 by rotating the threaded pressing rod 210, and the positioning column 311 is pressed out of the boat page 310 through the notch 121; when the positioning column 311 is installed, the positioning column 311 is clamped by tweezers to slightly press towards the boat hole of the boat page 310 to ensure that the positioning column 311 is fixed on the boat page 310, then the pressing block 221 is aligned with the positioning column 311, the pressing block 221 is driven by the rotary threaded pressing rod 210 to move towards the positioning column 311, the positioning column 311 is pressed into the boat hole on the boat page 310, and when the upper surface of the positioning column 311 and the upper surface of the boat page 310 are on the same reference surface, the rotary threaded pressing rod 210 stops rotating and the device is taken out.

According to the embodiment, the fit tolerance of the pressing block 221 and the notch 121 is controlled according to the sizes of the boat hole and the positioning column 311 on the graphite boat sheet, so that the positioning column 311 can be pressed into or out of the boat sheet 310 more accurately, the positioning column 311 is tightly matched with the boat hole, the assembly process requirement is met, the replacement process of the positioning column 311 is simplified, and the cost is saved.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims (9)

1. The utility model provides a device for changing graphite boat reference column which characterized in that: the device comprises an upper pressure plate (100) and a lower pressure plate (200) which are arranged up and down correspondingly, wherein a guide rod (110) and a thread pressure lever (210) are connected between the upper pressure plate (100) and the lower pressure plate (200), the thread pressure lever (210) is used for driving the upper pressure plate (100) and the lower pressure plate (200) to approach or depart from each other, and guiding the two pressure plates through the guide rod (110); the pressing block (221) is arranged on the lower pressing plate (200), the notch (121) is formed in the corresponding position of the upper pressing plate (100), and the positioning column (311) is pressed into or out of the boat page (310) through the adjusting threaded pressing rod (210).

2. The apparatus of claim 1, wherein the graphite boat positioning post comprises: the upper pressing plate (100) or the lower pressing plate (200) is provided with a threaded hole, and the threaded pressing rod (210) is installed on the corresponding lower pressing plate (200) or the corresponding upper pressing plate (100) and rotates relative to the lower pressing plate (200) or the corresponding upper pressing plate (100).

3. The apparatus of claim 2, wherein the graphite boat positioning post comprises: the upper pressure plate (100) is provided with a threaded hole, and the corresponding lower pressure plate (200) is provided with a through hole.

4. The apparatus of claim 1, wherein the graphite boat positioning post comprises: the upper pressing plate (100) comprises an upper reference plate (120) extending into the boat page (310) and an upper baffle (113) positioned outside the boat page (310), and the lower pressing plate (200) comprises a lower baffle (211) positioned outside the boat page (310) and a lower reference plate (220) extending into the boat page (310).

5. The apparatus of claim 4, wherein the graphite boat positioning column comprises: the widths of the upper reference plate (120) and the lower reference plate (220) are gradually reduced along the direction of extending into the boat page (310), and one end of the upper reference plate (120) with the reduced width is provided with a notch (121).

6. The apparatus of claim 5, wherein the graphite boat positioning post comprises: the upper reference plate (120) and the lower reference plate (220) are both in an isosceles triangle flat plate structure.

7. The apparatus of claim 6, wherein the graphite boat positioning post comprises: the included angle of the position, provided with the notch (121), on the upper reference plate (120) is an arc angle.

8. The apparatus as claimed in any one of claims 1 to 7, wherein the apparatus comprises: the notch (121) is a U-shaped notch or a circular notch.

9. The apparatus of claim 8, wherein the graphite boat positioning post comprises: the height of the pressing block (221) is not less than the thickness of the boat page (310).

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