A single crystal silicon rod feeding device and a square cutting machine

Abstract

The present invention discloses a single crystal silicon rod feeding device, including a material cart and a turnover cart; the material cart and the turnover cart both include a material cart frame and a loading and placing device; the loading and placing device includes a support frame arranged on the material cart frame, the two sides of the support frame are symmetrically bent upward and provided with rollers, and the rollers are arranged in sequence along the length direction of the support frame to roll and support the single crystal silicon rod; the material cart also includes a length measuring device; the length measuring device includes a measuring piece, a return elastic piece, a moving piece, a positioning piece, a driving mechanism and a length measuring piece; the positioning piece is arranged at the tail end of the support frame and protrudes upward from the support frame; the moving piece is slidably arranged in a cavity; the driving mechanism is used to drive the moving piece to move; the measuring piece is hinged at the moving piece, and the two ends of the return elastic piece are respectively connected to the moving piece and the measuring piece, and the height of the measuring piece when it is flipped to a vertical state is higher than the height of the support frame; the length measuring piece is used to measure the length of the measuring piece relative to the positioning piece. The present invention has the advantage of being able to measure the length of the single crystal silicon rod.

Description

Technical Field

[0001] The invention relates to the field of brittle and hard material cutting, and in particular to a single crystal silicon rod feeding device and a square cutting machine. Background Art

[0002] The square cutting machine is used to cut round rod-shaped single crystal silicon rods into cube-shaped single crystal silicon rods. An existing manipulator device of the square cutting machine is used to grab the single crystal silicon rod before cutting from the feed cart device to the clamping device, and to grab the single crystal silicon rod after cutting from the clamping device to the feed cart device, and to adjust the position of the single crystal silicon rod at the clamping device.

[0003] In actual use, since the length of the single crystal silicon rod raw material is inconsistent before cutting, even if the robot device has multiple clamps, the robot device may not necessarily grasp the center of the single crystal silicon rod raw material. After grasping, the weight of the two ends of the single crystal silicon rod deviates, which leads to a height difference at both ends of the single crystal silicon rod raw material. When the single crystal silicon rod is clamped by the front and rear clamping mechanisms, there will be a large angle deviation between its center line and the center line of the front and rear clamping mechanisms, which requires more time to align the crystal line. If the angle deviation is too large, it will cause the crystal line alignment to fail. Summary of the invention

[0004] To this end, it is necessary to provide a single crystal silicon rod feeding device and a square cutting machine to solve the problem that the manipulator device of the square cutting machine in the prior art does not necessarily grasp the center position of the single crystal silicon rod, resulting in the deviation of the shape of the single crystal silicon rod and then the deviation of the center line.

[0005] To achieve the above-mentioned purpose, the inventor provides a single crystal silicon rod feeding device, including a feeding car and a turnover car;

[0006] The material cart and the turnover cart both include a material cart frame and a material loading and placing device; the bottom of the material cart frame is provided with walking wheels; the material loading and placing device includes a support frame, the support frame is provided on the material cart frame, the two sides of the support frame are symmetrically bent upwards, and at least two rollers are respectively provided on both sides of the support frame, each roller is sequentially arranged along the length direction of the support frame, and is rotatably connected to the support frame, and all protrude upwards from the support frame to roll and support the single crystal silicon rod;

[0007] The material cart also includes a length measuring device; the length measuring device includes a measuring piece, a return elastic piece, a moving piece, a positioning piece, a driving mechanism and a length measuring piece; the positioning piece is arranged at the rear end of the support frame and protrudes upward from the support frame; the moving piece is slidably arranged in a cavity between the two sides of the support frame and can move along the length direction of the support frame; the driving mechanism is connected to the moving piece and is used to drive the moving piece to move along the length direction of the support frame; the measuring piece is hinged at the moving piece, and the two ends of the return elastic piece are respectively connected to the moving piece and the measuring piece, and are used to drive the measuring piece to flip to a vertical state, and the height of the measuring piece when flipped to the vertical state is higher than the height of the support frame; the length measuring piece is arranged at the positioning piece and is used to measure the length of the measuring piece relative to the positioning piece.

[0008] As a preferred structure of the present invention, the material cart also includes a positioning bar, which is connected to the material cart frame and protrudes from the material cart frame toward the rear end of the support frame; the turnover cart also includes a limit block, which has a limit groove, and the limit groove passes through the limit block, and the direction of penetration is consistent with the direction of the head end of the support frame; the positioning bar can be pushed into the limit groove of the limit block when the turnover cart is pushed to the material cart and the rear end of the support frame of the turnover cart is facing and abutting against the head end of the support frame of the material cart.

[0009] As a preferred structure of the present invention, grooves are provided on both side walls of the limit groove, and rollers are provided in the grooves. The rollers are rotatably arranged between the top and bottom surfaces of the grooves and protrude toward the limit grooves to roll and assist the positioning strip to slide into the limit grooves.

[0010] As a preferred structure of the present invention, the length measuring member is a drawstring sensor, the body of the drawstring sensor is arranged at the positioning member, and the end of the drawstring of the drawstring sensor is connected to the measuring member.

[0011] As a preferred structure of the present invention, the driving mechanism is a rodless cylinder, the rodless cylinder is arranged in a cavity between two sides of the support frame, and the moving member is connected to a moving slider of the rodless cylinder.

[0012] As a preferred structure of the present invention, pulleys are respectively provided on both sides of the moving member.

[0013] As a preferred structure of the present invention, the measuring piece is provided with two ear plates, and the two ear plates are symmetrically arranged on both sides of the measuring piece; the movable piece is located between the two ear plates and is hinged to the two ear plates through a rotating shaft; two return elastic pieces are provided, one end of the two return elastic pieces are connected to the movable piece, and the other ends of the two return elastic pieces are respectively connected to the two ear plates, and when the return elastic piece drives the measuring piece to flip to a vertical state, the ear plates abut against the bottom of the support frame.

[0014] As a preferred structure of the present invention, the material cart and the turnover cart both further include a material unloading placement device; the structure of the material unloading placement device is consistent with the structure of the material loading placement device, the material unloading placement device and the material loading placement device are placed parallel to each other on the material cart frame, and the spacing between the material unloading placement device and the material loading placement device of the material cart is consistent with the spacing between the material unloading placement device and the material loading placement device of the turnover cart.

[0015] As a preferred structure of the present invention, the material blanking and placing device also includes a V-shaped frame, which is arranged in the cavity of the support frame of the material blanking and placing device, and a V-shaped groove is opened on the top surface of the V-shaped frame, and the length direction of the V-shaped groove is consistent with the length direction of the support frame of the material blanking and placing device.

[0016] The inventor also provides a square cutting machine, comprising a square cutting machine body and a single crystal silicon rod feeding device, wherein the single crystal silicon rod feeding device is any one of the single crystal silicon rod feeding devices described above; the trolley frame of the trolley is also provided with a limit position detection device for detecting whether the single crystal silicon rod feeding device is moved below the clamping mechanism of the square cutting machine body.

[0017] Different from the prior art, the single crystal silicon rod feeding device and the square cutting machine described in the above technical scheme, the square cutting machine includes a square cutting machine body and the single crystal silicon rod feeding device, the single crystal silicon rod feeding device includes a material cart and a turnover cart; the material cart and the turnover cart both include a material cart frame and a loading and placing device; the material cart also includes a length measuring device. When it is necessary to place the single crystal silicon rod on the material cart, the single crystal silicon rod is placed at the head end of the support frame, and then the single crystal silicon rod is pushed toward the tail end of the support frame until the end of the single crystal silicon rod is against the fixing piece. At the same time, the measuring piece has been squeezed and flipped under the single crystal silicon rod. Then the driving mechanism drives the moving piece and the measuring piece to move toward the head end of the support frame until the measuring piece moves to the outside of the single crystal silicon rod. At this time, the measuring piece is flipped to a vertical state under the drive of the return elastic piece. The driving mechanism drives the moving piece and the measuring piece to move in the opposite direction until the measuring piece contacts the end of the single crystal silicon rod. Then the length measuring piece measures the distance between the positioning piece and the measuring piece, which is the length of the single crystal silicon rod. After knowing the length of the single crystal silicon rod, it can provide data for judgment on where the manipulator device grabs the single crystal silicon rod to ensure that the single crystal silicon rod can maintain balance after being grabbed by the manipulator device. The single crystal silicon rod can maintain balance after being grasped by the manipulator device, which can ensure that the central axis of the single crystal silicon rod can be accurately located at the central axis of the clamping mechanism after the single crystal silicon rod is moved to the clamping mechanism, which can save alignment time and avoid the situation where alignment cannot be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of a single crystal silicon rod feeding device according to an embodiment of the present invention;

[0019] Figure 2It is a structural diagram of a loading and placing device involved in one embodiment of the present invention;

[0020] Figure 3 A partial cross-sectional view of a loading and placing device according to an embodiment of the present invention Figure 1 ;

[0021] Figure 4 A partial cross-sectional view of a loading and placing device according to an embodiment of the present invention Figure 2 ;

[0022] Figure 5 is a structural diagram of a length measuring device according to an embodiment of the present invention;

[0023] Figure 6 This is a structural diagram of a material cart involved in one embodiment of the present invention;

[0024] Figure 7 It is a structural diagram of a material placement device according to an embodiment of the present invention;

[0025] Figure 8 It is an end view of a material placement device according to an embodiment of the present invention;

[0026] Fig. 9 This is a structural diagram of a turnover vehicle according to an embodiment of the present invention;

[0027] Fig.10 A structural diagram of a limit block according to an embodiment of the present invention;

[0028] Fig.11 The present invention is a structural diagram of a square root machine according to an embodiment of the present invention.

[0029] Description of reference numerals:

[0030] 1. Material car;

[0031] 10. Loading and placing device; 100. Support frame; 101. Roller; 102. Measuring part; 1020. Ear plate; 1021. Rotating shaft; 103. Spring; 104. Moving part; 1040. Pulley; 105. Positioning part; 106. Rodless cylinder; 107. Pull rope sensor; 1070. Pull rope;

[0032] 11. Material carriage frame; 110. Traveling wheels;

[0033] 12. Material placement device; 120. V-shaped frame;

[0034] 13. Positioning bar;

[0035] 2. Turnover vehicle;

[0036] 20. Limit block; 200. Groove;

[0037] 3. Square opening machine body;

[0038] 4. Limit detection device;

[0039] 5. Single crystal silicon rod. DETAILED DESCRIPTION

[0040] In order to explain the technical content, structural features, achieved objectives and effects of the technical solution in detail, the following is a detailed description in conjunction with specific embodiments and accompanying drawings.

[0041] See also Figure 1 , Figure 6 and Fig. 9 The present invention provides a single crystal silicon rod feeding device for assisting the square cutting machine body 3 in loading. While loading, the length of the single crystal silicon rod 5 is measured to provide data for judging where the manipulator device grabs the single crystal silicon rod 5 to ensure that the single crystal silicon rod 5 can maintain balance after being grabbed by the manipulator device.

[0042] In a specific embodiment, the single crystal silicon rod feeding device includes a material cart 1 and a turnover cart 2. The material cart 1 is used to move to the bottom of the manipulator device of the square cutting machine body 3 so that the manipulator device can grab and place the single crystal silicon rod 5; the turnover cart 2 is used to transport the single crystal silicon rod 5 from other places to the material cart 1.

[0043] The material cart 1 and the turnover cart 2 both include a material cart frame 11 and a loading and placing device 10; a walking wheel 110 is provided at the bottom of the material cart frame 11; the loading and placing device 10 includes a support frame 100, and the support frame 100 is arranged on the material cart frame 11, and both sides of the support frame 100 are symmetrically bent upwards, and at least two rollers 101 are respectively provided on both sides of the support frame 100, and each roller 101 is arranged in sequence along the length direction of the support frame 100, and is rotatably connected to the support frame 100, and all protrude upward from the support frame 100 to rollingly support the single crystal silicon rod 5. After placing the single crystal silicon rod 5 on the support frame 100, the single crystal silicon rod 5 is pushed. Under the interaction between the single crystal silicon rod 5 and the roller 101, the single crystal silicon rod 5 can be easily pushed. Therefore, after the turnover vehicle 2 is pushed to the material vehicle 1 and the rear end of the support frame 100 of the turnover vehicle 2 is aligned with the front end of the support frame 100 of the material vehicle 1, the single crystal silicon rod 5 can be pushed so that the single crystal silicon rod 5 can be easily pushed onto the support frame 100 of the material vehicle 1, and the single crystal silicon rod 5 on the turnover vehicle 2 can be moved to the material vehicle 1 in a time-saving and labor-saving manner.

[0044] See also Figure 2 and Figure 5The material cart 1 also includes a length measuring device; the length measuring device includes a measuring piece 102, a return elastic piece, a moving piece 104, a positioning piece 105, a driving mechanism and a length measuring piece. The positioning piece 105 is arranged at the tail end of the support frame 100 and protrudes upward from the support frame 100. Such an arrangement enables one end of the single crystal silicon rod 5 to abut against the positioning piece 105 during the process of the single crystal silicon rod 5 moving from the head end of the support frame 100 to the tail end of the support frame 100. The movable member 104 can be slidably arranged in the cavity between the two sides of the support frame 100, and can be moved along the length direction of the support frame 100; the driving mechanism is connected to the movable member 104, and is used to drive the movable member 104 to move along the length direction of the support frame 100; the measuring member 102 is hinged at the movable member 104, and the two ends of the return elastic member are respectively connected to the movable member 104 and the measuring member 102, and are used to drive the measuring member 102 to flip to a vertical state. The height of the measuring member 102 when flipped to the vertical state is higher than the height of the support frame 100; the length measuring member is arranged at the positioning member 105, and is used to measure the length of the measuring member 102 relative to the positioning member 105.

[0045] In a further embodiment, the length measuring piece is a pull rope sensor 107, the body of the pull rope sensor 107 is arranged at the positioning piece 105, and the end of the pull rope 1070 of the pull rope sensor 107 is connected to the measuring piece 102. When the measuring piece 102 moves, the pull rope 1070 will be stretched. When the measuring piece 102 moves to abut against the end of the single crystal silicon rod 5 close to the head end of the support frame 100, the pull rope sensor 107 can obtain the stretched length of the pull rope 1070. The length of the pull rope 1070 is the length of the single crystal silicon rod 5. Therefore, the length of the single crystal silicon rod 5 can be measured in this way.

[0046] The driving mechanism is a cylinder or a motor, the output shaft of the cylinder or the motor is located in the cavity between the two sides of the support frame, and the moving member is connected to the output shaft of the cylinder or the motor. However, in order to better set the moving member 104, in a preferred embodiment, the driving mechanism is a rodless cylinder 106, the rodless cylinder 106 is set in the cavity between the two sides of the support frame 100, the moving member 104 is connected to the moving slider of the rodless cylinder 106, the length of the rodless cylinder 106 is consistent with the length of the support frame 100, the setting direction of the rodless cylinder 106 is consistent with the length direction of the support frame 100, and the two ends of the rodless cylinder 106 are respectively fixed to the support frame 100 through the mounting seat. After the rodless cylinder 106 is started, the moving slider of the rodless cylinder 106 moves, and drives the moving member 104 and the measuring member 102 connected to the moving slider to move.

[0047] In a further embodiment, pulleys 1040 are respectively provided on both sides of the moving member 104 , and with the assistance of the pulleys 1040 , the moving member 104 can move better along with the moving slider.

[0048] In one embodiment, the measuring member 102 is provided with two ear plates 1020, and the two ear plates 1020 are symmetrically arranged on both sides of the measuring member 102; the movable member 104 is located between the measuring member 102 and the positioning member 105, and is arranged between the two ear plates 1020, and is hinged to the two ear plates 1020 through a rotating shaft 1021. Such an arrangement allows the measuring member 102 to rotate relative to the movable member 104, and when the measuring member 102 is rotated to a vertical state, the ear plates 1020 of the measuring member 102 abut against the support frame 100, and the measuring member 102 cannot continue to rotate, thereby limiting the angle range of rotation of the measuring member 102. The return elastic member can be a spring 103, and two return elastic members are provided. One end of the two return elastic members is connected to the moving member 104, and the other ends of the two return elastic members are respectively connected to two ear plates 1020. When the return elastic member drives the measuring member 102 to flip to a vertical state, the ear plate 1020 abuts against the bottom of the support frame 100.

[0049] When loading is required, the single crystal silicon rod 5 is placed at the head end of the support frame 100, and then the single crystal silicon rod 5 is pushed toward the tail end of the support frame 100 until the end of the single crystal silicon rod 5 is against the fixing piece. Figure 3 , the measuring member 102 has been squeezed and turned over under the single crystal silicon rod 5, and then the driving mechanism drives the moving member 104 and the measuring member 102 to move toward the head end of the support frame 100, and the pull rope 1070 of the pull rope sensor 107 is stretched as the measuring member 102 moves, until the measuring member 102 moves to the outside of the single crystal silicon rod 5, see Figure 4 At this time, the measuring member 102 is flipped to a vertical state under the drive of the return elastic member, and the driving mechanism drives the moving member 104 and the measuring member 102 to move in the opposite direction until the measuring member 102 contacts the end of the single crystal silicon rod 5. Then, the pull rope sensor 107 obtains the length of the pull rope 1070, which is the length of the single crystal silicon rod 5. After the length of the single crystal silicon rod 5 is known, the position of the single crystal silicon rod 5 for the manipulator device to grasp can be provided for judgment to ensure that the single crystal silicon rod 5 can maintain balance after being grasped by the manipulator device. If the single crystal silicon rod 5 can maintain balance after being grasped by the manipulator device, it can ensure that the central axis of the single crystal silicon rod 5 can be accurately located at the central axis of the clamping mechanism after the single crystal silicon rod 5 is moved to the clamping mechanism, which can save alignment time and avoid the situation where alignment cannot be achieved.

[0050] In a further embodiment, the material cart 1 and the turnover cart 2 both further include a material unloading placement device 12; the structure of the material unloading placement device 12 is consistent with the structure of the material loading placement device 10, the material unloading placement device 12 and the material loading placement device 10 are placed on the material cart frame 11 in parallel, and the spacing between the material unloading placement device 12 and the material loading placement device 10 of the material cart 1 is consistent with the spacing between the material unloading placement device 12 and the material loading placement device 10 of the turnover cart 2. When the turnover cart 2 is pushed to the material cart 1, the rear end of the support frame 100 of the material loading placement device 10 of the turnover cart 2 is aligned with the front end of the support frame 100 of the material loading placement device 10 of the material cart 1, and the rear end of the support frame 100 of the material unloading placement device 12 of the turnover cart 2 is aligned with the front end of the support frame 100 of the material unloading placement device 12 of the material cart 1. The cut single crystal silicon rod 5 can be placed on the support frame 100 of the unloading and placing device 12 of the material cart 1, and then manually pushed to the support frame 100 of the unloading and placing device 12 of the turnover cart 2, and finally the cut single crystal silicon rod 5 is moved away by the turnover cart 2.

[0051] See also Figure 7 and Figure 8 Since the cut single crystal silicon rod 5 is a square column, in order to place the cut single crystal silicon rod 5 more stably, in a further embodiment, the material unloading and placing device 12 also includes a V-shaped frame 120, and the V-shaped frame 120 is arranged in the cavity of the support frame 100 of the material unloading and placing device 12. A V-shaped groove is opened on the top surface of the V-shaped frame 120, and the length direction of the V-shaped groove is consistent with the length direction of the support frame 100 of the material unloading and placing device 12. When the cut single crystal silicon rod 5 is placed on the support frame 100 of the material unloading and placing device 12, one edge of the cut single crystal silicon rod 5 faces downward and perfectly rests against the V-shaped groove of the V-shaped frame 120, so that the cut single crystal silicon rod 5 can be stably placed.

[0052] In order to more conveniently and accurately align the support frame 100 of the material vehicle 1 and the turnover vehicle 2, in a further embodiment, refer to Figure 6 The material cart 1 further comprises a positioning bar 13, which is connected to the material cart frame 1 and is arranged to protrude from the material cart frame 11 toward the rear end of the support frame 100; see Fig. 9 The turnover vehicle 2 also includes a limit block 20, and the limit block 20 is provided with a limit slot, and the limit slot passes through the limit block 20, and the direction of the pass is consistent with the direction of the head end of the support frame 100; the positioning strip 13 can be pushed from the turnover vehicle 2 to the material vehicle 1 and pushed into the limit slot of the limit block 20, please refer to Figure 1At this time, the rear end of the support frame 100 of the turnover vehicle 2 is directly opposite to the head end of the support frame 100 of the material vehicle 1, so there is no need for manual alignment. In addition, under the mutual restriction of the positioning bar 13 and the limit block 20, the turnover vehicle 2 and the material vehicle 1 will not move left and right, which is more convenient for loading and unloading.

[0053] See also Fig.10 In order to make the alignment smoother, in a preferred embodiment, grooves 200 are provided on both side walls of the limiting groove, and rollers 101 are provided in the grooves 200. The rollers 101 are rotatably provided between the top and bottom surfaces of the grooves 200 and protrude toward the limiting groove to roll and assist the positioning strip 13 to slide into the limiting groove. Such a setting can reduce the friction force exerted on the positioning strip 13 when passing through the limiting groove, so that the positioning strip 13 can be sent into the limiting groove more effortlessly.

[0054] See also Fig.11 The present invention also provides a square cutting machine, including a square cutting machine body 3 and a single crystal silicon rod feeding device, wherein the single crystal silicon rod feeding device is any of the single crystal silicon rod feeding devices described above; the material cart frame 11 of the material cart 1 is also provided with a limit detection device 4, which can be a sensor, specifically a distance measuring sensor, for detecting whether the single crystal silicon rod feeding device is moved below the clamping mechanism of the square cutting machine body 3. Such a square cutting machine can measure the length of the uncut single crystal silicon rod during the loading process.

[0055] It should be noted that, although the above embodiments have been described in this article, the patent protection scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, changes and modifications made to the embodiments described herein, or equivalent structures or equivalent process changes made using the contents of the present invention specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included in the patent protection scope of the present invention.

Claims

1. A single crystal silicon rod feeding device, characterized in that: Including material carts and turnover carts; The material cart and the turnover cart both include a material cart frame and a material loading and placing device; the bottom of the material cart frame is provided with walking wheels; the material loading and placing device includes a support frame, the support frame is provided on the material cart frame, the two sides of the support frame are symmetrically bent upwards, and at least two rollers are respectively provided on both sides of the support frame, each roller is sequentially arranged along the length direction of the support frame, and is rotatably connected to the support frame, and all protrude upwards from the support frame to roll and support the single crystal silicon rod; The material cart also includes a length measuring device; the length measuring device includes a measuring piece, a return elastic piece, a moving piece, a positioning piece, a driving mechanism and a length measuring piece; the positioning piece is arranged at the tail end of the support frame and protrudes upward from the support frame; the moving piece is slidably arranged in a cavity between two sides of the support frame and can move along the length direction of the support frame; the driving mechanism is connected to the moving piece and is used to drive the moving piece to move along the length direction of the support frame; the measuring piece is hinged at the moving piece, and the two ends of the return elastic piece are respectively connected to the moving piece and the measuring piece, and are used to drive the measuring piece to flip to a vertical state, and the height of the measuring piece when flipped to the vertical state is higher than the height of the support frame; the length measuring piece is arranged at the positioning piece and is used to measure the length of the measuring piece relative to the positioning piece; The material cart also includes a positioning bar, which is connected to the material cart frame and protrudes from the material cart frame toward the rear end of the support frame; the turnover car also includes a limit block, which is provided with a limit slot, and the limit slot passes through the limit block, and the direction of the pass is consistent with the direction of the head end of the support frame; the positioning bar can be pushed into the limit slot of the limit block when the turnover car is pushed to the material cart and the rear end of the support frame of the turnover car is directly opposite to the head end of the support frame of the material cart; Grooves are provided on both side walls of the limiting groove, and rollers are provided in the grooves. The rollers are rotatably provided between the top and bottom surfaces of the grooves and protrude toward the limiting grooves to roll and assist the positioning strips to slide into the limiting grooves. The length measuring member is a drawstring sensor, the body of the drawstring sensor is arranged at the positioning member, and the end of the drawstring of the drawstring sensor is connected to the measuring member; The measuring piece is provided with two ear plates, and the two ear plates are symmetrically arranged on both sides of the measuring piece; the movable piece is located between the two ear plates and is hinged to the two ear plates through a rotating shaft; there are two return elastic pieces, one end of the two return elastic pieces are connected to the movable piece, and the other ends of the two return elastic pieces are respectively connected to the two ear plates, and when the return elastic piece drives the measuring piece to flip to a vertical state, the ear plates abut against the bottom of the support frame.

2. The single crystal silicon rod feeding device according to claim 1, characterized in that: The driving mechanism is a rodless cylinder, which is arranged in a cavity between two sides of the support frame, and the moving member is connected to a moving slider of the rodless cylinder.

3. The single crystal silicon rod feeding device according to claim 1, characterized in that: Pulleys are respectively arranged on both sides of the moving part.

4. The single crystal silicon rod feeding device according to claim 1, characterized in that: The material cart and the turnover cart both also include a material unloading placement device; the structure of the material unloading placement device is consistent with the structure of the material loading placement device, the material unloading placement device and the material loading placement device are placed parallel to each other on the material cart frame, and the distance between the material unloading placement device and the material loading placement device of the material cart is consistent with the distance between the material unloading placement device and the material loading placement device of the turnover cart.

5. The single crystal silicon rod feeding device according to claim 4, characterized in that: The material placement device also includes a V-shaped frame, which is arranged in the cavity of the support frame of the material placement device. The top surface of the V-shaped frame is provided with a V-shaped groove, and the length direction of the V-shaped groove is consistent with the length direction of the support frame of the material placement device.

6. A square opening machine, characterized in that: It comprises a square cutting machine body and a single crystal silicon rod feeding device, wherein the single crystal silicon rod feeding device is the single crystal silicon rod feeding device described in any one of claims 1-5; the trolley frame of the trolley is also provided with a limit position detection device for detecting whether the single crystal silicon rod feeding device is moved below the clamping mechanism of the square cutting machine body.

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