Feeding device of slicer and slicer

Abstract

The present invention relates to the field of silicon wafer processing technology, and discloses a feeding device of a slicer and a slicer, which are used to solve the problems of low accuracy and low working efficiency of the feeding device in the prior art. The feeding device includes: a hoisting assembly, which is configured to hoist a silicon column; two clamping assemblies, which are arranged on a first base along a first direction; a first driving mechanism, which is arranged on the first base and connected to the two clamping assemblies, and is configured to drive the two clamping assemblies to be relatively close to each other along the first direction, so that the two clamping assemblies clamp the hoisting assembly, and move the hoisting assembly to a first position corresponding to the feeding device of the slicer, or drive the two clamping assemblies to be relatively far away from each other along the first direction, so that the two clamping assemblies release the hoisting assembly; a second driving mechanism, which is arranged on the second base and connected to the first base, and is configured to drive the first base to move along the second direction, so that the first base is close to the feeding device or away from the feeding device; the first direction is perpendicular to the second direction.

Description

Technical Field

[0001] The invention relates to the technical field of silicon wafer processing, and in particular to a feeding device of a slicer and a slicer. Background Art

[0002] Diamond wire slicers are widely used in cutting single crystal silicon wafers. Diamond wire slicers use unidirectional or reciprocating motion of diamond wire to form a relative grinding motion between the diamond wire and the silicon column being cut, thereby achieving the purpose of cutting.

[0003] In actual use of the existing diamond wire slicer, the silicon column is first moved to the loading station of the loading device through the feeding device. After loading, it is cut by moving the diamond wire. The feeding device can be a tool such as a mobile cart. In order to ensure that the silicon column can accurately reach the loading station, it is often necessary to manually align the feeding device, resulting in low working efficiency of the feeding device. Summary of the invention

[0004] The invention provides a feeding device of a slicer and a slicer, which are used to solve the problems of low accuracy and low working efficiency of the feeding device in the prior art.

[0005] In a first aspect, an embodiment of the present invention provides a feeding device for a slicer, the feeding device comprising a hoisting assembly, two clamping assemblies, a first base, a first driving mechanism, a second base, and a second driving mechanism;

[0006] The lifting assembly is configured to lift the silicon column;

[0007] The two clamping assemblies are arranged on the first base along a first direction;

[0008] The first driving mechanism is disposed on the first base and connected to the two clamping assemblies, and is configured to drive the two clamping assemblies to be relatively close to each other along the first direction, so that the two clamping assemblies clamp the side wall of the hanging assembly and move the hanging assembly to a first position corresponding to the feeding device of the slicer, or drive the two clamping assemblies to be relatively far away from each other along the first direction, so that the two clamping assemblies release the hanging assembly;

[0009] The second driving mechanism is disposed on the second base and connected to the first base, and is configured to drive the first base to move along a second direction so that the first base approaches the loading device or moves away from the loading device;

[0010] The first direction is perpendicular to the second direction.

[0011] In the above embodiment, the clamping assembly can be abutted against the side wall of the lifting assembly under the drive of the first driving mechanism, and by controlling the displacement of the clamping assembly along the first direction, the lifting assembly can be accurately moved to the first position corresponding to the loading device, and then, the first base is driven by the second driving mechanism to approach the loading device along the second direction, and by controlling the displacement of the first base along the second direction, the lifting assembly can accurately reach the loading station. In this way, during the feeding process, the lifting assembly loaded with silicon columns can be moved along the set path under the drive of the clamping assembly, the first driving mechanism, and the second driving mechanism, so that it can be accurately moved to the loading station, and no manual adjustment is required, thereby improving work efficiency.

[0012] Optionally, the lifting assembly includes a lifting block, the bottom surface of the lifting block is configured to connect to the silicon column, and the top surface of the lifting block is provided with wing plates extending outward on two opposite sides along the first direction;

[0013] The two clamping assemblies are configured to be supported under corresponding wing plates and to slide relative to the wing plates under the drive of the first driving mechanism.

[0014] In the above optional embodiment, when the clamping assembly moves along the first direction driven by the first driving mechanism, the lifting assembly can automatically adjust its position as the clamping assembly moves until the clamping assembly generates a corresponding displacement, at which time the lifting assembly moves to the first position and is clamped by the clamping assembly from both sides.

[0015] Optionally, a first rolling portion is provided on the top surface of the clamping assembly or the bottom surface of the wing plate, a central axis of the first rolling portion is arranged along the second direction, and the first rolling portion is configured to rotate around its own central axis when the clamping assembly slides relative to the wing plate along the first direction.

[0016] In the above optional implementation manner, under the action of the first rolling portion, the friction between the clamping assembly and the wing plate is rolling friction, and the friction force between the two is relatively small.

[0017] Optionally, the clamping assembly includes a clamping plate and a support plate arranged on the top of the clamping plate, and the first rolling portion is arranged on the support plate.

[0018] Optionally, a plurality of second rolling parts are provided on one side of the clamping assembly facing the hanging assembly or on one side of the hanging assembly facing the clamping assembly, the plurality of second rolling parts are arranged along the second direction, and the central axis of each second rolling part is arranged along the third direction, and the second rolling part is configured to rotate around its own central axis when the clamping assembly slides relative to the hanging assembly along the second direction;

[0019] The third direction is perpendicular to the first direction and the second direction.

[0020] In the above optional embodiment, before the first base is driven to move along the second direction toward the feeding device and the displacement of the first base reaches the maximum stroke, the end of the lifting assembly will abut against the feeding device. At this time, driven by the second driving mechanism, the first base can continue to move forward. At the same time, the lifting assembly remains stationary, and the clamping assembly slides relative to the lifting assembly. The friction between the two is reduced by the provision of the second rolling part.

[0021] Optionally, the clamping assembly includes a clamping plate, a mounting frame is provided on a side of the clamping plate facing the lifting assembly, and the second rolling portion is rotatably connected to the mounting frame.

[0022] Optionally, a rubber sleeve is provided on the surface of the second rolling part.

[0023] Optionally, the first driving mechanism comprises a first motor and a positive and negative thread ball screw, and the two clamping assemblies are respectively arranged at two ends of the positive and negative thread ball screw through first nut seats;

[0024] The first motor is configured to drive the forward and reverse ball screw to rotate forward or reversely so as to make the two clamping assemblies relatively close to each other or relatively far away from each other.

[0025] Optionally, a first guide rail is disposed on the surface of the first base, and the first nut seat is slidably connected to the first guide rail.

[0026] Optionally, the feeding device also includes a support seat, the support seat includes a first end and a second end arranged along the second direction, the first end is connected to the first base, and the second end is connected to the second driving mechanism, when the support seat moves to a maximum stroke in a direction close to the feeding device, the first end extends to the outside of the second base.

[0027] In a second aspect, an embodiment of the present invention further provides a slicer, comprising a loading device, a slicing device and the feeding device described in any one of the above technical solutions.

[0028] In the above embodiment, during the use of the slicer, the hoisting assembly loaded with the silicon column can move along the set path with the cooperation of the clamping assembly, the first drive mechanism, and the second drive mechanism, so that it can be accurately moved to the loading station, and no manual adjustment is required, which effectively improves the work efficiency; then, the hoisting assembly loaded with the silicon column is transferred from the clamping assembly to the loading device, the clamping assembly is reset, and the slicing device cuts the silicon column. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1A schematic diagram of the structure of a feeding device provided in an embodiment of the present invention;

[0030] Figure 2 A schematic diagram of a combination of a first base, a clamping assembly provided on the first base, and a first driving mechanism provided in an embodiment of the present invention;

[0031] Figure 3 A schematic diagram of the structure of a hoisting assembly provided in an embodiment of the present invention;

[0032] Figure 4 A side view of a clamping assembly and a hoisting assembly provided in an embodiment of the present invention after being assembled;

[0033] Figure 5 A schematic diagram of the structure of a clamping assembly provided in an embodiment of the present invention;

[0034] Figure 6 A schematic diagram of the combination of a second base, a second driving device and a support base provided on the second base provided in an embodiment of the present invention.

[0035] Reference numerals:

[0036] 10-lifting assembly; 11-lifting block; 110-guide groove; 12-wing plate; 20-clamping assembly; 21-clamping plate; 22-support plate; 23-bracket; 24-mounting frame; 30-first base; 31-first guide rail; 40-first drive mechanism; 41-first motor; 42-positive and negative ball screw; 43-first nut seat; 50-second base; 51-second guide rail; 60-second drive mechanism; 61-second motor; 62-ball screw; 63-second nut seat; 70-first roller; 80-second roller; 90-support seat; 100-silicon column. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] The embodiment of the present invention provides a feeding device of a slicer, which is used to solve the problems of low accuracy and low working efficiency of the feeding device in the prior art.

[0039] like Figure 1 to Figure 6As shown, the feeding device includes a lifting component 10, two clamping components 20, a first base 30, a first driving mechanism 40, a second base 50, and a second driving mechanism 60, wherein: the lifting component 10 is configured to lift the silicon column 100; the two clamping components 20 are arranged on the first base 30 along the first direction; the first driving mechanism 40 is arranged on the first base 30 and connected to the two clamping components 20, and is configured to drive the two clamping components 20 to be relatively close to each other along the first direction, so that the two clamping components 20 clamp the side walls of the lifting component 10, and move the lifting component 10 to a first position corresponding to the feeding device of the slicer, or drive the two clamping components 20 to be relatively far away from each other along the first direction, so that the two clamping components 20 release the lifting component 10; the second driving mechanism 60 is arranged on the second base 50 and connected to the first base 30, and is configured to drive the first base 30 to move along the second direction, so that the first base 30 is close to the feeding device or away from the feeding device.

[0040] The first direction is perpendicular to the second direction. Figure 1 , Figure 2 The first direction is the X-axis direction, and the second direction is the Y-axis direction.

[0041] Specifically, if Figure 1 , Figure 2 As shown, the clamping assembly 20 and the first driving mechanism 40 are both arranged on the first base 30. There are two clamping assemblies 20, which are arranged at intervals along the first direction (X-axis direction). Each clamping assembly 20 can be moved along the first direction under the drive of the first driving mechanism 40, and under the drive of the first driving mechanism 40, the two clamping assemblies 20 can clamp the hanging assembly 10 loaded with the silicon column 100 from both sides, and drive the hanging assembly 10 to move to the first position corresponding to the loading device of the slicer. In this process, by controlling the displacement of the clamping assembly 20 along the first direction, the hanging assembly 10 can be accurately moved to the first position.

[0042] Driven by the second driving mechanism 60, the first base 30 can be moved closer to or away from the loading device along the second direction (Y-axis direction). In this way, driven by the second driving mechanism 60, the lifting assembly 10 can be accurately moved to the loading station by controlling the displacement of the first base 30 along the second direction.

[0043] During the feeding process of the feeding device, the lifting assembly 10 loaded with the silicon column 100 can move along the set path with the cooperation of the clamping assembly 20, the first driving mechanism 40, and the second driving mechanism 60, so as to be accurately moved to the loading station, and no manual adjustment is required, which effectively improves work efficiency.

[0044] In order to more clearly understand the feeding device provided in the embodiment of the present invention, a detailed description is now given in conjunction with the accompanying drawings.

[0045] like Figure 3 , Figure 4 As shown, the lifting assembly 10 includes a lifting block 11, the bottom surface of the lifting block 11 is configured to connect to the silicon column 100, and the top surface of the lifting block 11 is provided with outwardly extending wing plates 12 on two opposite sides along the first direction (X-axis direction); the two clamping assemblies 20 are configured to be supported under the corresponding wing plates 12, and slide relative to the wing plates 12 along the first direction in the first driving mechanism 40.

[0046] During the feeding process, the lifting component 10 is first placed above the two clamping components 20. At this time, the clamping component 20 is not in contact with the side wall of the lifting block 11, and the clamping component 20 is supported at the bottom of the wing plate 12. Driven by the first driving mechanism 40, the clamping component 20 moves along the first direction. At the same time, the lifting component 10 can adjust its own position as the clamping component 20 moves until the two clamping components 20 respectively generate the corresponding first displacement and second displacement. The first driving mechanism 40 stops power output and the clamping component 20 no longer moves. At this time, the clamping component 20 clamps the lifting block 11 on both sides of the lifting block 11, and the lifting block 11 is just in the first position.

[0047] When the lifting component 10 is placed above the two clamping components 20, the lifting component 10 can be exactly located at the first position, or deviate from the first position. Driven by the first driving mechanism 40, as the clamping component 20 moves, the lifting component 10 can be adaptively adjusted according to the difference between the initial position and the first position, thereby compensating for the deviation between the two and reducing the position accuracy of the lifting component 10 along the first direction when the lifting component 10 is placed above the two clamping components 20.

[0048] The displacement directions of the two clamping assemblies 20 are opposite, and the sizes thereof may be the same or different.

[0049] like Figure 3 As shown, a guide groove 110 is provided on the top of the lifting block 11, and the guide groove 110 extends along the second direction (Y-axis direction), and the guide groove 110 can be passed through by a component adapted thereto in the loading device to complete the loading. Glass is bonded to the bottom of the lifting block 11, and the glass is bonded to the silicon column 100.

[0050] The wing plates 12 are symmetrically arranged on both sides of the lifting block 11 along the first direction (X-axis direction). The wing plates 12 and the lifting block 11 can be an integrated structure. The wing plates 12 are provided with lifting holes, which can be connected to the lifting equipment to move the lifting assembly 10 between the two clamping assemblies 20.

[0051] As can be seen from the above content, the two clamping assemblies 20 can be lifted and supported at the bottom of the corresponding wing plate 12. When the clamping assembly 20 moves along the first direction (X-axis direction) driven by the first driving mechanism 40, the clamping assembly 20 slides relative to the wing plate 12. In order to reduce the friction resistance between the clamping assembly 20 and the wing plate 12, take any pair of clamping assemblies 20 and the wing plate 12 as an example. Figure 4 , Figure 5 As shown, a first rolling portion 70 is provided on the top surface of the clamping assembly 20 or the bottom surface of the wing plate 12, and the central axis of the first rolling portion 70 is arranged along the second direction (Y-axis direction). The first rolling portion 70 is configured to rotate around its own central axis when the clamping assembly 20 slides relative to the wing plate 12 along the first direction. In this way, rolling friction can be generated on the contact surface between the clamping assembly 20 and the wing plate 12, thereby reducing the resistance encountered by the clamping assembly 20 when the two generate relative motion.

[0052] The number of the first rolling parts 70 is not limited, and may be one or more. When the number of the first rolling parts 70 is more than one, the first rolling parts 70 are arranged in a row along the first direction.

[0053] like Figure 5 As shown, the clamping assembly 20 includes a clamping plate 21 and a support plate 22 arranged on the top of the clamping plate 21. The first rolling portion 70 is arranged on the support plate 22. The first rolling portion 70 can rotate freely around its own central axis. The first rolling portion 70 is a cylindrical structure and is arranged along the second direction.

[0054] In addition to the clamping plate 21 and the supporting plate 22 , the clamping assembly 20 further includes a bracket 23 . The clamping plate 21 is disposed at the top end of the bracket 23 , and the bottom end of the bracket 23 is connected to the first driving mechanism 40 .

[0055] Continue to refer Figure 4 , Figure 5 A plurality of second rolling portions 80 are provided on one side of the clamping assembly 20 facing the lifting assembly 10 or on one side of the lifting assembly 10 facing the clamping assembly 20. The plurality of second rolling portions 80 are arranged along the second direction (Y-axis direction), and the central axis of each second rolling portion 80 is arranged along the third direction. The second rolling portion 80 is configured to rotate around its own central axis when the clamping assembly 20 slides relative to the lifting assembly 10 along the second direction.

[0056] The third direction is perpendicular to the first direction and the second direction. Figure 4 , Figure 5 The Z-axis direction.

[0057] During the feeding process, driven by the first driving mechanism 40, the two clamping assemblies 20 can clamp the side wall of the lifting assembly 10 and move the lifting assembly 10 to the first position, and then, driven by the second driving mechanism 60, the first base 30 carries the clamping assembly 20 and the lifting assembly 10 to move along the second direction. Before the displacement of the first base 30 reaches the maximum stroke, the end of the lifting assembly 10 will first abut against the limiting component. Thereafter, driven by the second driving mechanism 60, the first base 30 can continue to move forward. At the same time, the lifting assembly 10 will remain stationary. The clamping assembly 20 slides relative to the lifting assembly 10 as the first base 30 continues to move, and the second rolling part 80 rotates freely around its own rotation axis. The clamping assembly 20 and the lifting assembly 10 generate rolling friction on the contact surface, which reduces the resistance encountered by the clamping assembly 20 when the two generate relative motion, until the displacement of the first base 30 reaches the maximum stroke, the second driving mechanism 60 stops power output and the first base 30 stops moving.

[0058] It should be noted that the length of the clamping assembly 20 along the second direction is smaller than the length of the lifting assembly 10 along the second direction. The clamping assembly 20 can clamp the middle position of the lifting assembly 10, or it can clamp any side position deviating from the middle position. The positions clamped by the clamping assembly 20 are different. Then, under the drive of the second driving mechanism 60, when the end of the lifting assembly 10 abuts against the limiting component, the displacement of the first base 30 is different. At this time, the second driving mechanism 60 can continue to operate until the displacement of the first base 30 reaches the maximum stroke. The clamping assembly 20 slides relative to the lifting assembly 10 as the first base 30 continues to move, and the second rolling part 80 is provided to reduce the friction resistance of the clamping assembly 20. In this way, during repeated feeding, the total displacement of the first base 30 is the same, thereby facilitating the control of the start and stop of the second driving mechanism 60.

[0059] It is understandable that during the reciprocating feeding process, the position clamped by the clamping assembly 20 may deviate along the length direction of the lifting assembly 10, thereby reducing the control accuracy of the placement position of the lifting assembly 10 along the second direction when the lifting assembly 10 is placed between the two clamping assemblies 20.

[0060] like Figure 5 As shown, the clamping assembly 20 includes a clamping plate 21, a mounting frame 24 is provided on the side of the clamping plate 21 facing the lifting assembly 10, and the second roller 80 is rotatably connected to the mounting frame 24. The mounting frame 24 can be a U-shaped structure, the bottom of the U-shaped mounting frame 24 is fixedly connected to the clamping plate 21, and the two sides of the U-shaped mounting frame 24 are rotatably connected to the second roller 80 respectively.

[0061] Continue to refer Figure 5The second rolling portion 80 is a cylindrical structure and is arranged along the third direction (Z-axis direction).

[0062] The surface of the second rolling part 80 is provided with a rubber sleeve, which can make the two contacting parts produce flexible contact and avoid mechanical damage to the contact surface.

[0063] In the feeding device, the first driving mechanism 40 can drive the two clamping assemblies 20 to move along the first direction. The first driving mechanism 40 can include two driving units, which correspond to the two clamping assemblies 20 respectively and drive the corresponding clamping assemblies 20 to move. Alternatively, a positive and negative tooth ball screw can be used to drive the two clamping assemblies 20 to move synchronously. In this embodiment, Figure 2 As shown, the first driving mechanism 40 includes a first motor 41 and a forward and reverse ball screw 42. The two clamping assemblies 20 are respectively arranged at the two ends of the forward and reverse ball screw 42 through the first nut seat 43. The first motor 41 is configured to drive the forward and reverse ball screw 42 to rotate forward or reverse so that the two clamping assemblies 20 are relatively close to or relatively far away from each other.

[0064] Specifically, when the forward and reverse ball screw 42 rotates, the two clamping assemblies 20 can move synchronously. When the forward and reverse ball screw 42 stops rotating, the two clamping assemblies 20 stop moving at the same time. The strokes of the clamping assemblies 20 are consistent, and the movement directions are opposite.

[0065] Continue to refer Figure 2 A first guide rail 31 is disposed on the surface of the first base 30 , and the first nut seat 43 is slidably connected to the first guide rail 31 .

[0066] The setting direction of the first guide rail 31 is consistent with the setting direction of the positive and negative thread ball screw 42. The first nut seat 43 can slide along the first guide rail 31 while moving on the positive and negative thread ball screw 42, so that the movement of the clamping assembly 20 is smoother.

[0067] like Figure 1 , Figure 6 As shown, the feeding device also includes a support seat 90, which includes a first end and a second end arranged along the second direction (Y-axis direction), the first end is connected to the first base 30, and the second end is connected to the second driving mechanism 60. When the support seat 90 moves to the maximum stroke in the direction close to the feeding device, the first end extends to the outside of the second base 50.

[0068] The support seat 90 may be an L-shaped structure. Figure 1 , Figure 6In the figure, the support seat 90 is located at the maximum stroke position. At this time, the first end of the support seat 90 extends to the outside of the second base 50, the first base 30 is located at the first end of the support seat 90, the first base 30 and the clamping assembly 20 and the lifting assembly 10 arranged on the first base 30 are all located outside the second base 50, and the loading device passes through the guide groove 110 at the top of the lifting assembly 10 to complete the loading.

[0069] Continue to refer Figure 6 The second driving mechanism 60 includes a second motor 61 and a ball screw 62 . The support seat 90 is connected to the ball screw 62 via a second nut seat 63 . In addition, a second guide rail 51 is provided on the second base 50 , and the second nut seat 63 can slide along the second guide rail 51 .

[0070] In a second aspect, an embodiment of the present invention further provides a slicer, comprising a feeding device, a loading device and a slicing device in any one of the above technical solutions.

[0071] During the use of the slicer, the hoisting assembly 10 loaded with the silicon column 100 can move along the set path with the cooperation of the clamping assembly 20, the first drive mechanism 40, and the second drive mechanism 60, so as to be accurately moved to the loading station, and no manual adjustment is required, which effectively improves the work efficiency; then, the hoisting assembly 10 loaded with the silicon column 100 is transferred from the clamping assembly 20 to the loading device, the clamping assembly is reset, and the slicing device cuts the silicon column 100.

[0072] Here, the slicing device includes a diamond wire, a roller and other devices. Through the unidirectional circulation or reciprocating circulation of the diamond wire, a relative grinding motion is formed between the diamond wire and the silicon column to be cut, thereby achieving the purpose of cutting.

[0073] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A feeding device for a slicer, characterized in that: It includes a hoisting assembly, two clamping assemblies, a first base, a first driving mechanism, a second base, and a second driving mechanism; The lifting assembly is configured to lift the silicon column; The two clamping assemblies are arranged on the first base along a first direction; The first driving mechanism is disposed on the first base and connected to the two clamping assemblies, and is configured to drive the two clamping assemblies to be relatively close to each other along the first direction, so that the two clamping assemblies clamp the side wall of the hanging assembly and move the hanging assembly to a first position corresponding to the feeding device of the slicer, or drive the two clamping assemblies to be relatively far away from each other along the first direction, so that the two clamping assemblies release the hanging assembly; The second driving mechanism is disposed on the second base and connected to the first base, and is configured to drive the first base to move along a second direction so that the first base approaches the loading device or moves away from the loading device; The first direction is perpendicular to the second direction; The lifting assembly comprises a lifting block, the bottom surface of the lifting block is configured to connect with the silicon column, and the top surface of the lifting block is provided with wing plates extending outwards on two opposite sides along the first direction; The two clamping assemblies are configured to be supported under the corresponding wing plates and to slide relative to the wing plates along the first direction under the drive of the first driving mechanism; A first rolling portion is provided on the top surface of the clamping assembly or the bottom surface of the wing plate, the central axis of the first rolling portion is arranged along the second direction, and the first rolling portion is configured to rotate around its own central axis when the clamping assembly slides relative to the wing plate along the first direction.

2. The feeding device according to claim 1, characterized in that The clamping assembly comprises a clamping plate and a support plate arranged on the top of the clamping plate, and the first rolling part is arranged on the support plate.

3. The feeding device according to claim 1 or 2, characterized in that: A plurality of second rolling parts are arranged on one side of the clamping assembly facing the hanging assembly or on one side of the hanging assembly facing the clamping assembly, the plurality of second rolling parts are arranged in an array along the second direction, and the central axis of each second rolling part is arranged along the third direction, and the second rolling part is configured to rotate around its own central axis when the clamping assembly slides relative to the hanging assembly along the second direction; The third direction is perpendicular to the first direction and the second direction.

4. The feeding device according to claim 3, characterized in that The clamping assembly comprises a clamping plate, a mounting frame is arranged on a side of the clamping plate facing the hoisting assembly, and the second rolling portion is rotatably connected to the mounting frame.

5. The feeding device according to claim 3, characterized in that: A rubber sleeve is provided on the surface of the second rolling part.

6. The feeding device according to claim 1 or 2, characterized in that: The first driving mechanism comprises a first motor and a positive and negative thread ball screw, and the two clamping assemblies are respectively arranged at two ends of the positive and negative thread ball screw through first nut seats; The first motor is configured to drive the forward and reverse ball screw to rotate forward or reversely so as to make the two clamping assemblies relatively close to each other or relatively far away from each other.

7. The feeding device according to claim 6, characterized in that A first guide rail is disposed on the surface of the first base, and the first nut seat is slidably connected to the first guide rail.

8. The feeding device according to claim 6, characterized in that The feeding device also includes a support seat, which includes a first end and a second end arranged along the second direction, the first end is connected to the first base, and the second end is connected to the second driving mechanism. When the support seat moves to a maximum stroke in a direction close to the loading device, the first end extends to the outside of the second base.

9. A slicer, characterized in that: It comprises a loading device, a slicing device and the feeding device according to any one of claims 1 to 8.

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