Silicon rod guillotine shear capable of cutting off freely

Abstract

The silicon rod cutting machine comprises a machine base, a workpiece supporting table and a cutting device, the cutting device comprises a cutting frame and a linear cutting unit, the linear cutting unit can move in the Y-axis direction and the Z-axis direction, the workpiece supporting table comprises a fixed supporting table and a floating supporting table, and the fixed supporting table comprises a fixed frame and a movable frame; the movable frame is detachably connected to the upper side of the fixed frame, and the movable frame is provided with a positioning notch for positioning a silicon rod; the floating supporting table comprises a lifting mechanism and a supporting wheel set, the supporting wheel set comprises a supporting plate and a plurality of supporting wheels, the supporting plate is fixed to the top end of the lifting mechanism, and the movable frame is provided with a through hole for the supporting wheels to pass through when moving upwards. The lifting mechanism is used for driving the supporting wheel set to upwards pass through the through hole so that the supporting wheel set can initially support and position the silicon rod. In the cutting process, the resin block is used as a consumable to support the silicon rod, and the requirement for cutting off the silicon rod at any length position is met under the condition that cutting of the silicon rod is not affected.

Description

Technical Field

[0001] The invention relates to the field of diamond wire cutting machines, and in particular to a silicon rod cutting machine which can cut freely. Background Art

[0002] Diamond wire cutting machines are widely used to cut various metal and non-metal composite materials, such as ceramics, glass, rocks, gemstones, jade, single crystal silicon, polycrystalline silicon, etc., and are particularly suitable for cutting various brittle crystals with high hardness, high value, and easy to break. For example, the utility model patent with authorization announcement number CN205631033U discloses a single-stage silicon rod cutting machine, which cuts the silicon rod into multiple single-stage silicon rod segments of different sizes through multiple cuttings by a single-stage wire cutting unit. The silicon rod conveying platform includes a roller assembly for carrying the silicon rod to be cut and driving the cut multiple single-stage silicon rod segments to be conveyed axially, and a motor assembly for controlling the roller assembly. The roller assembly is divided into multiple roller assembly sections according to the cut silicon rod segments. The patent claims that the silicon rod to be cut can be cut according to any set size. In fact, it depends on the support points of the silicon rod on the roller assembly. The silicon rod needs to be placed according to the cut-off size, and the cutting point can only be located between two adjacent support points. Once the silicon rod is placed, it cannot be cut at any point. For example, it cannot be cut at the roller of the roller assembly, otherwise the roller will be damaged or the diamond wire will be damaged when the diamond wire cuts into it. Summary of the invention

[0003] The object of the present invention is to provide a silicon rod cutting machine which can cut the silicon rods freely. After the silicon rods are placed, they can be cut into required lengths at any point.

[0004] To achieve the above object, the present invention adopts the following technical solution:

[0005] A freely cut silicon rod cutting machine comprises a machine base, a workpiece support platform, and a cutting device. The cutting device comprises a cutting frame and a wire cutting unit. The wire cutting unit can move in the Y-axis and Z-axis directions. The workpiece support platform comprises a fixed support platform and a floating support platform. The fixed support platform comprises a fixed frame and a movable frame. The movable frame is detachably connected to the upper side of the fixed frame. The movable frame has a positioning notch for positioning the silicon rod during processing.

[0006] The floating support platform includes a lifting mechanism and a supporting wheel group. The supporting wheel group includes a supporting plate and a plurality of supporting wheels. The supporting plate is fixed to the top of the lifting mechanism. The movable frame has a through hole for the supporting wheel to pass through when moving upward. The lifting mechanism is used to drive the supporting wheel group upward through the through hole so that the supporting wheel group can initially support and position the silicon rod.

[0007] Furthermore, during the silicon rod processing, the lifting mechanism drives the supporting wheel set to move downward to separate from the movable frame, so that the silicon rod falls into the positioning notch.

[0008] Furthermore, the movable frame is made of a resin block, the positioning notch is V-shaped, and the positioning notch is arranged along the length direction of the resin block; the resin block has a plurality of through holes arranged at intervals along its length direction, and the through holes are through in the up and down directions.

[0009] Furthermore, the lifting mechanism is a scissor-type lifting arm, including a pair of inner lifting arms and a pair of outer lifting arms. The middle parts of the inner lifting arms and the outer lifting arms are hinged by a rotating shaft. A connecting rod is provided between the two inner lifting arms or the two outer lifting arms, and the connecting rod is connected to the driving mechanism.

[0010] Furthermore, a connecting rod is provided between the two inner lifting arms, and the driving mechanism adopts an oil cylinder, the connecting rod is connected to the piston rod of the oil cylinder, one end of the two outer lifting arms is hinged on the machine base, and the other end is hinged through a first hinge shaft, and first rollers are provided at both ends of the first hinge shaft, and the first roller is rotatably assembled on the first wheel groove, and the first wheel groove is fixed to the support plate; one end of the two inner lifting arms is hinged on the support plate, and the other end is hinged through a second hinge shaft, and second rollers are provided at both ends of the second hinge shaft, and the second roller is rotatably assembled on the second wheel groove, and the second wheel groove is fixed to the machine base.

[0011] Furthermore, the support wheels are arranged in groups of two to form a V-shaped support opening.

[0012] Furthermore, a plurality of fixed rollers are provided on the upper side of the outer end of the fixing frame for supporting the silicon rods when the silicon rods are initially loaded.

[0013] Furthermore, the cutting frame includes a Y-axis frame and a Z-axis frame, the Y-axis frame is driven by a Y-axis screw and nut mechanism, the Z-axis frame is slidably assembled on the Y-axis frame, the Z-axis frame is driven by the Z-axis screw and nut mechanism, the wire cutting unit is arranged on the Z-axis frame, the Z-axis frame has a U-shaped opening facing downward, and the U-shaped opening is arranged corresponding to the workpiece support platform; the wire cutting unit includes a diamond loop wire, and the diamond loop wire passes through the bottom of the U-shaped opening.

[0014] Furthermore, the Z-axis frame is a single cantilever structure, and a side of the Z-axis frame away from the U-shaped opening is a sliding fitting portion, and the Z-axis frame is slidably assembled on the Y-axis frame through the sliding fitting portion.

[0015] Furthermore, the wire cutting unit comprises a driving wire wheel and a tensioning wire wheel, and the tensioning wire wheel is tensioned by a cylinder.

[0016] Beneficial effects of the present invention:

[0017] Before placing the silicon rod, the oil cylinder first drives the support wheel group to move upward to the state of protruding the resin block (movable frame). The silicon rod is supported by the support wheel group. The silicon rod can be pushed into the equipment with manual assistance. After the silicon rod is placed in place, the oil cylinder reverses, the support wheel group moves downward and hides under the resin block (the position where the support wheel group cannot be cut), and then the silicon rod falls into the positioning notch of the resin block, and the resin block supports and positions the silicon rod. When cutting starts, the wire cutting unit moves to the set position according to the length of the cut, and the Z-axis frame drives the wire cutting unit to move down to cut the silicon rod until the silicon rod is cut. During the cutting process, the diamond ring wire can cut the resin block synchronously. Since the support wheel group cannot be cut at this time, the Y-axis frame can be fed arbitrarily after the silicon rod is placed in place and before cutting, and the rod segment of any length can be cut. When the resin block is cut a small number of times, it does not affect the support function of the silicon rod. It can be replaced with a new resin block after multiple uses. The resin block is low-cost and easy to manufacture as a consumable. This ingenious structural design can well meet the need to cut the silicon rod at any length position without the problem of avoiding the supporting wheels. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the silicon rod cutting machine capable of freely cutting of the present invention;

[0019] Figure 2 It is a three-dimensional diagram of the freely cut silicon rod cutting machine of the present invention after removing part of the outer shell;

[0020] Figure 3 It is a partial structural view of the workpiece support platform (the support wheel group is not exposed);

[0021] Figure 4 It is a three-dimensional diagram of the floating support platform;

[0022] Figure 5 is a three-dimensional diagram of the cutting device of the present invention;

[0023] Figure 6 yes Figure 5 View of the tensioning structure at the middle tensioning pulley.

[0024] The names corresponding to the marks in the figure are:

[0025] 11. Machine base; 12. Housing; 13. Front side door; 21. Y-axis frame; 22. Z-axis screw nut mechanism; 23. Z-axis frame; 231. U-shaped mouth; 24. Y-axis screw nut mechanism; 3. Silicon rod; 4. Wire cutting unit; 41. Active wire wheel; 42. Tensioning wire wheel; 43. Guide wire wheel; 51. Fixed frame; 52. Fixed roller; 53. Resin block; 531. Through hole; 61. Outer lifting arm; 62. Inner lifting arm; 63. First wheel groove; 64. First roller; 65. Second roller; 66. Second wheel groove; 67. Cylinder; 71. Support plate; 72. Support wheel group; 721. Support wheel; 81. Push plate; 82. Slide rail; 83. Bearing seat. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0027] Example:

[0028] like Figure 1-Figure 6 As shown, a freely cut silicon rod cutting machine comprises a machine base 11, a workpiece support table, a cutting device and a shell 12, wherein a door body is provided on the front side and one of the left and right sides of the shell 12.

[0029] The cutting device includes a cutting frame and a wire cutting unit 4. The wire cutting unit 4 can move in the Y-axis and Z-axis directions. The cutting frame includes a Y-axis frame 21 and a Z-axis frame 23. The Y-axis frame 21 is driven by a Y-axis lead screw nut mechanism 24. The Z-axis frame 23 is slidably assembled on the Y-axis frame 21. The Z-axis frame 23 is driven by a Z-axis lead screw nut mechanism 22. The wire cutting unit 4 is arranged on the Z-axis frame 23. The wire cutting unit 4 can be driven by the Y-axis and Z-axis lead screw nut mechanisms 22 to translate along the Y-axis and rise and fall along the Z-axis, thereby completing the cutting of the silicon rod 3 into a plurality of rod segments of required lengths.

[0030] The Z-axis frame 23 has a U-shaped opening 231 opening downward, and the U-shaped opening 231 is arranged corresponding to the workpiece support platform; the wire cutting unit 4 includes a diamond loop wire, which passes through the bottom of the U-shaped opening 231 and cuts the silicon rod 3 on the workpiece support platform when the diamond loop wire rotates at high speed.

[0031] The Z-axis frame 23 is a single cantilever structure, and the side of the Z-axis frame 23 away from the U-shaped opening 231 is a sliding fitting portion, and the Z-axis frame 23 is slidably assembled on the Y-axis frame 21 through the sliding fitting portion. In the process of cutting the silicon rod 3 on the workpiece support table, the Z-axis frame 23 uses its U-shaped opening 231 to make way for the silicon rod 3 when moving downward.

[0032] The workpiece support platform includes a fixed support platform and a floating support platform. The fixed support platform includes a fixed frame 51 and a movable frame. The movable frame is detachably connected to the upper side of the fixed frame 51. The movable frame has a positioning notch for positioning the silicon rod 3 during processing.

[0033] like Figure 2-Figure 3 As shown, in this embodiment, the movable frame uses a resin block 53, and the positioning notch is V-shaped. The positioning notch is set along the length direction of the resin block 53. After the silicon rod 3 is placed, it can be stably supported and positioned by relying on the weight of the silicon rod 3. The resin block 53 has a plurality of through holes 531 spaced apart along its length direction, and the through holes 531 are through in the up-down direction.

[0034] The resin block 53 is positioned around by positioning strips and positioning plates, which are connected to the fixing frame 51 by screws. The positioning strips and positioning plates form a rectangular area just for the resin block 53 to be placed in. The resin block 53 is a consumable material and is easy to replace later.

[0035] The floating support platform includes a lifting mechanism and a support wheel group 72. The support wheel group 72 includes a support plate 71 and a plurality of support wheels 721. The support plate 71 is fixed to the top of the lifting mechanism. The support wheels 721 are arranged in groups of two to form a V-shaped support opening. The support wheels 721 are non-powered rollers. The two support wheels 721 in a group are inclined and symmetrically arranged.

[0036] The lifting mechanism is used to drive the supporting wheel group 72 upward through the through hole 531 so that the supporting wheel group 72 initially supports and positions the silicon rod 3. After the silicon rod 3 is placed in place, the lifting mechanism drives the supporting wheel group 72 to move downward to separate from the movable frame, so that the silicon rod 3 falls into the positioning groove of the resin block 53. During the processing of the silicon rod 3, it is supported and positioned by the resin block 53.

[0037] like Figure 4 As shown, the lifting mechanism is a scissor-type lifting mechanism, including a pair of inner lifting arms 62 and a pair of outer lifting arms 61. The middle parts of the inner lifting arms 62 and the outer lifting arms 61 are hinged by a rotating shaft. A connecting rod is provided between the two inner lifting arms 62 or the two outer lifting arms 61, and the connecting rod is connected to the driving mechanism.

[0038] In this embodiment, a connecting rod is provided between the two inner lifting arms 62, and the driving mechanism adopts an oil cylinder, and the connecting rod is connected to the piston rod of the oil cylinder. One end of the two outer lifting arms 61 is hinged on the machine base 11, and the other end is hinged through a first hinge shaft. Both ends of the first hinge shaft are provided with first rollers 64, and the first rollers 64 are rotatably assembled on the first wheel groove 63, and the first wheel groove 63 is fixed to one side of the support plate 71.

[0039] One end of the two inner lifting arms 62 is hinged on the support plate 71, and the other end is hinged through a second hinge shaft. The two ends of the second hinge shaft are provided with second rollers 65, and the second rollers 65 are rollingly assembled on the second wheel grooves 66, and the second wheel grooves 66 are fixed to the machine base 11. The first wheel groove 63 and the second wheel groove 66 are both U-shaped groove structures. The cylinder body of the oil cylinder is tiltedly arranged on the machine base 11, and the support plate 71 can be lifted and lowered while being kept horizontal by the extension and contraction of the oil cylinder.

[0040] like Figure 2 As shown, a plurality of fixed rollers 52 are disposed on the upper side of the outer end of the fixed frame 51 to support the silicon rods 3 when the silicon rods 3 are initially loaded. The number of fixed rollers 52 is small and they mainly play an auxiliary role.

[0041] like Figure 5 As shown, the wire cutting unit 4 includes a driving wire wheel 41, a tensioning wire wheel 42 and two guide wire wheels 43, the axes of the two guide wire wheels 43 are in the same plane, the diamond wire loop passes around the driving wire wheel 41, the tensioning wire wheel 42 and the two guide wire wheels 43, so that the diamond wire loop is trapezoidal as a whole, and the bottom section of the diamond wire loop, that is, the effective cutting section, is horizontal.

[0042] like Figure 6 As shown, the tensioning wheel 42 is tensioned by the cylinder 67. The tensioning wheel 42 is assembled on the tensioning shaft, and the tensioning shaft is assembled on the bearing seat 83. The bearing seat 83 is installed in the push plate 81. The seat body of the bearing seat 83 and the push plate 81 do not rotate relative to each other, that is, when the push plate 81 moves linearly, the bearing seat 83 moves accordingly. The push plate 81 has a sliding portion, and the sliding portion is slidably assembled with the slide rail 82. The push plate 81 is pushed by the cylinder 67. The extension direction of the cylinder 67 is toward or away from the direction of the workpiece support platform. When the cylinder 67 is extended, the bearing seat 83 moves in one direction and the tensioning wheel 42 is tensioned. When the cylinder 67 is retracted, the bearing seat 83 moves in the opposite direction and the tensioning wheel 42 is relaxed. The tensioning wheel 42 can be disassembled from the old diamond loop and installed with a new diamond loop when it is relaxed.

[0043] The cutting machine capable of freely cutting silicon rods 3 of the present invention, when in use:

[0044] Open the front door 13, the oil cylinder drives the support wheel group 72 to move upward, and the support wheel group 72 is on the upper side of the resin block 53; with the help of the lifting tool, the silicon rod 3 is loaded, one end of the silicon rod 3 first contacts the fixed roller 52, and the silicon rod 3 can be pushed into the equipment with manual assistance. The support height of the support wheel group 72 and the fixed roller 52 is consistent. The silicon rod 3 can continue to be pushed inward along the fixed roller 52 and the support wheel group 72 until the silicon rod 3 is completely on the support wheel group 72. At this time, the oil cylinder reverses and the support wheel group 72 moves downward. The silicon rod 3 falls into the positioning notch of the resin block 53 and is supported by the resin block 53. When the silicon rod 3 starts to be cut, the cutting device is automatically controlled by the control program of the equipment, the Y-axis frame 21 is driven by the Y-axis lead screw nut mechanism 24, and moves to the set position according to the truncated length, and the Z-axis frame 23 is driven by the Z-axis lead screw nut mechanism 22, driving the wire cutting unit 4 to move down to cut the silicon rod 3 until the silicon rod 3 is truncated. During the cutting process, the diamond loop can synchronously cut the resin block 53. Since the support wheel set 72 is hidden under the resin block 53, the support wheel set 72 cannot be cut. Then, after the silicon rod 3 is placed in place, the Y-axis frame 21 can be fed arbitrarily, and the rod segment of any length can be cut. When the resin block 53 is cut a small number of times, it does not affect the supporting function of the silicon rod 3. It can be used multiple times and then replaced with a new resin block. Using resin as a consumable material has low cost and is easy to manufacture.

[0045] In other embodiments, the movable frame may be made of PVC plastic or rubber instead of the resin block, which has good support and is easy to cut.

[0046] In other embodiments, a pneumatic cylinder or an oil cylinder may be used to lift and lower directly in the vertical direction, thereby driving the support plate and the support wheel assembly to lift and lower. To improve stability, a pneumatic cylinder may be provided at each end of the lower side of the support plate.

[0047] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that are the same or similar to those of the present application fall within the protection scope of the present invention.

Claims

1. A freely cut silicon rod cutting machine, comprising a machine base, a workpiece support table, and a cutting device, wherein the cutting device comprises a cutting frame and a wire cutting unit, and the wire cutting unit can move in the Y-axis and Z-axis directions, and is characterized in that: The workpiece support platform includes a fixed support platform and a floating support platform. The fixed support platform includes a fixed frame and a movable frame. The movable frame is detachably connected to the upper side of the fixed frame. The movable frame has a positioning notch for positioning the silicon rod during processing. The floating support platform includes a lifting mechanism and a supporting wheel group. The supporting wheel group includes a supporting plate and a plurality of supporting wheels. The supporting plate is fixed to the top of the lifting mechanism. The movable frame has a through hole for the supporting wheel to pass through when moving upward. The lifting mechanism is used to drive the supporting wheel group upward through the through hole so that the supporting wheel group can initially support and position the silicon rod.

2. The freely cut silicon rod cutting machine according to claim 1, characterized in that: During the silicon rod processing, the lifting mechanism drives the supporting wheel group to move downward to separate from the movable frame, so that the silicon rod falls into the positioning notch.

3. The freely cut silicon rod cutting machine according to claim 1, characterized in that: The movable frame adopts a resin block, the positioning notch is V-shaped, and the positioning notch is arranged along the length direction of the resin block; the resin block has a plurality of through holes arranged at intervals along its length direction, and the through holes are through in the up and down directions.

4. The freely cut silicon rod cutting machine according to claim 1, characterized in that: The lifting mechanism is a scissor-type lifting arm, including a pair of inner lifting arms and a pair of outer lifting arms. The middle parts of the inner lifting arms and the outer lifting arms are hinged through a rotating shaft. A connecting rod is provided between the two inner lifting arms or the two outer lifting arms, and the connecting rod is connected to a driving mechanism.

5. The freely cut silicon rod cutting machine according to claim 4, characterized in that: A connecting rod is provided between the two inner lifting arms, and the driving mechanism adopts an oil cylinder. The connecting rod is connected to the piston rod of the oil cylinder. One end of the two outer lifting arms is hinged on the machine base, and the other end is hinged through a first hinge shaft. First rollers are provided at both ends of the first hinge shaft. The first rollers are rotatably assembled on the first wheel groove, and the first wheel groove is fixed to the support plate; one end of the two inner lifting arms is hinged on the support plate, and the other end is hinged through a second hinge shaft. Second rollers are provided at both ends of the second hinge shaft. The second rollers are rotatably assembled on the second wheel groove, and the second wheel groove is fixed to the machine base.

6. The freely cut silicon rod cutting machine according to claim 1, characterized in that: The support wheels are arranged in groups of two to form a V-shaped support opening.

7. The freely cut silicon rod cutting machine according to claim 3, characterized in that: A plurality of fixed rollers are arranged on the upper side of the outer end of the fixing frame, which are used to support the silicon rods when the silicon rods are initially loaded.

8. The freely cut silicon rod cutting machine according to claim 1, characterized in that: The cutting frame includes a Y-axis frame and a Z-axis frame. The Y-axis frame is driven by a Y-axis screw and nut mechanism. The Z-axis frame is slidably assembled on the Y-axis frame. The Z-axis frame is driven by a Z-axis screw and nut mechanism. The wire cutting unit is arranged on the Z-axis frame. The Z-axis frame has a U-shaped opening facing downward, and the U-shaped opening is arranged corresponding to the workpiece support platform. The wire cutting unit includes a diamond loop wire, and the diamond loop wire passes through the bottom of the U-shaped opening.

9. The freely cut silicon rod cutting machine according to claim 8, characterized in that: The Z-axis frame is a single cantilever structure, and a side of the Z-axis frame away from the U-shaped opening is a sliding fitting portion, and the Z-axis frame is slidably assembled on the Y-axis frame through the sliding fitting portion.

10. The freely cut silicon rod cutting machine according to claim 8, characterized in that: The wire cutting unit comprises a driving wire wheel and a tensioning wire wheel, and the tensioning wire wheel is tensioned by a cylinder.

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