CN107259966B

CN107259966B - Vegetable mashing machine

Info

Publication number: CN107259966B
Application number: CN201710485451.2A
Authority: CN
Inventors: 林琼; 王志东; 吴杰; 张洁; 孙倩倩; 刘伟
Original assignee: Institute of Food Science and Technology of CAAS
Current assignee: Institute of Food Science and Technology of CAAS
Priority date: 2017-06-23
Filing date: 2017-06-23
Publication date: 2022-04-22
Anticipated expiration: 2037-06-23
Also published as: CN107259966A

Abstract

The invention discloses a vegetable mashing machine, comprising: the mashing device comprises a machine shell, a mashing barrel, a guiding mechanism and a stirring mechanism, wherein the mashing barrel is fixedly arranged in the machine shell, the guiding mechanism is fixedly arranged above the mashing barrel, and a guiding hole is formed in the guiding mechanism; a mashing arm provided through the guide hole toward the mashing cylinder; and the transmission device drives the mashing arm to do reciprocating motion up and down, and when the mashing end of the mashing arm moves downwards to the lowest position, the mashing arm is close to the bottom of the mashing cylinder so as to press vegetables in the mashing cylinder. The automatic smashing device has the advantages of simple structure, small volume and convenience in operation, automatically collects the object to be smashed, gives transverse extrusion force to the object to be smashed, adjusts the height of the smashing cylinder according to the smashing amount, and enhances the processing efficiency.

Description

Vegetable mashing machine

Technical Field

The invention belongs to the technical field of food preparation. More particularly, the present invention relates to a vegetable masher.

Background

The preparation mode of food has a lot of, wherein there is a lot of gourmet needs to be smashed, make the mud form, or powdered, to big or hard edible material, for example the potato, need cut into shreds earlier it is chopping or artifical trituration, artifical trituration in-process, hold the small mortar with one hand, hold the pestle with one hand, if eat the material more still pay attention to can not spill the mortar with eating the material, and need certain time fully to chisel and hit even, waste time and energy, and to the material of the pungent taste of onion, hot pepper etc. have, it is one kind to examine and harm to human body itself at the in-process of chisel, provide a simple structure small, convenient operation, machining efficiency is high, be applicable to the vegetables triturator pounder that family and restaurant used and need to solve the problem that needs now urgently.

Disclosure of Invention

An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.

The invention also aims to provide a vegetable mashing machine which has the advantages of simple structure, small volume and convenient operation, automatically collects the objects to be mashed, gives transverse extrusion force to the objects to be mashed, adjusts the height of the mashing cylinder according to the mashing amount and enhances the processing efficiency.

To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a vegetable masher comprising:

the mashing device comprises a machine shell, a mashing barrel and a guide mechanism, wherein the mashing barrel is fixedly arranged in the machine shell, the guide mechanism is fixedly arranged above the mashing barrel in the machine shell, and a guide hole with a certain thickness is formed in the guide mechanism;

a mashing arm provided through the guide hole toward the mashing cylinder;

and the transmission device drives the mashing arm to do reciprocating motion up and down, and when the mashing end of the mashing arm moves downwards to the lowest position, the mashing arm is close to the bottom of the mashing cylinder so as to press vegetables in the mashing cylinder.

Preferably, transmission include the motor, with the little band pulley that the motor shaft end is connected, with little band pulley pair's big band pulley, with the worm that big band pulley coaxial arrangement and connect, be located the worm upper end and rather than the turbine of meshing, one end rigid coupling in it the first connecting rod of turbine center pin department, with first connecting rod other end articulated second connecting rod, wherein, smash the arm and keep away from smash the one end of a section of thick bamboo with the second connecting rod is articulated.

Preferably, the guide mechanism includes: the baffle is positioned above the mashing cylinder and horizontally clamped in the shell, a through hole is formed in the baffle, a linear bearing is fixedly arranged in the through hole, and the linear bearing forms a guide hole for the mashing arm to pass through.

Preferably, smash a section of thick bamboo for cylindrical barrel, it is fixed to locate and smashes the chamber bottom surface through locating component, locating component includes articulated fixed hoop and activity hoop, fixed hoop with the activity hoop is semi-circular structure, wherein, fixed hoop set firmly in smash the chamber bottom surface on, the free end of fixed hoop has first earcap, first earcap has first through-hole, the free end of activity hoop has the second earcap, the second earcap has the second through-hole, locating component still includes the bolt, rotatory activity hoop make its with when fixed hoop free end docks, first through-hole with the coaxial setting of second through-hole, the bolt passes in proper order first through-hole with the second through-hole is with fixed first earcap and second earcap.

Preferably, the shaft end of the motor output shaft is connected with the rotating shaft of the small belt pulley through a coupling, and the rotating shaft of the small belt pulley is fixed in the casing through a first bearing seat;

the inside of the shell is relatively provided with a first support and a second support, a second bearing seat is fixedly arranged on the first support, one end of the worm is fixed through the second bearing seat when the rotating shaft of the large belt wheel is far away from the worm, a third bearing seat is fixedly arranged on the second support, and one end of the worm is far away from the large belt wheel is fixed through the third bearing seat.

Preferably, smash to pieces end for protruding ellipsoidal structure that sets up downwards of smashing the arm, smash to pieces the top surface diameter of end of arm and slightly be lighter than smash to pieces a section of thick bamboo internal diameter, the motor drives smash to pieces end upward movement when being the highest of smashing the arm, smash to pieces the arm and stretch out from smash to pieces in the section of thick bamboo.

Preferably, the vegetable mashing machine further comprises a motor speed regulator, and the motor speed regulator is connected with the motor to regulate the rotation speed of the motor.

Preferably, a gathering mechanism which is communicated up and down is sleeved in the mashing cylinder, the diameter of the top surface of the gathering mechanism is smaller than that of the mashing end of the mashing arm, the gathering mechanism comprises a gathering unit which is fixedly connected with the mashing cylinder along the circumferential direction of the inner side wall of the mashing cylinder through a plurality of shrinkage sleeves, and the gathering unit comprises an arc-shaped panel and a curved plate which are integrally formed and arranged up and down;

the arc panel with smash to pieces a section of thick bamboo inner side wall and set up two at least pressure springs from top to bottom at the interval, the lower terminal surface of curved plate with smash the bottom surface butt of a section of thick bamboo, be located between the terminal surface of arbitrary two adjacent arc panels butt joints shrink cover interior interval sets up two piece at least elastic rope, works as smash to pieces the arm and smash to pieces the end downstream extremely when drawing in the mechanism, shrink cover is tensile, the diameter that the cambered surface of arc panel encloses into the circle is slightly greater than smash to pieces the arm and smash to pieces end top surface diameter, the curved plate encloses into the curved surface with smash the bottom surface looks adaptation of the arm and smash to pieces the end.

Preferably, the outer part of the bottom surface of the machine shell is provided with a support, the bottom surface of the machine shell is provided with a pair of third through holes, the mashing machine also comprises an adjusting seat, which is fixedly arranged on the inner bottom surface of the shell and is positioned below the mashing cylinder, the adjusting seat comprises a plurality of discs with a gap, the discs are sequentially stacked, the notches of any two adjacent disks face opposite directions to form a through hole which is similar to a strip shape and is arranged from top to bottom, a pair of third through holes and projections fall in the through hole and are positioned at the two ends of the through hole, the adjusting seat also comprises a pair of bolts and nuts, the two bolts respectively penetrate through the through holes and the pair of third through holes, the penetrating ends are respectively in threaded connection with the pair of nuts, the heads of the pair of bolts are abutted against the upper surface of the disc positioned at the top, wherein, locating component fixes the upper surface at the disc that is located the top, the thickness of disc is 0.1-0.3 mm.

The invention at least comprises the following beneficial effects:

firstly, the vegetable mashing machine of the invention arranges the transmission device right above the mashing cylinder, arranges the small belt wheel, the large belt wheel, the worm, the turbine, the first connecting rod, the second connecting rod and the mashing arm in order in a small space, converts the rotation of the motor along the horizontal direction into the reciprocating motion of the mashing arm along the vertical direction so as to process food, has simple structure, small volume and convenient operation, and is suitable for families and restaurants.

Secondly, the mashing cylinder of the vegetable mashing machine is clamped and fixed through the positioning component, and the height of the positioning component relative to the bottom surface of the mashing cylinder is adjustable through the adjusting piece, namely under the condition that the whole arrangement of the machine is not changed, the height between the mashing end of the mashing arm and the bottom surface of the mashing cylinder when the mashing end completely falls to the lowest end is adjusted, so that the amount of mashing food at one time is adjusted, and the practicability of the vegetable mashing machine is improved.

Thirdly, a furling mechanism is sleeved in the mashing cylinder of the vegetable mashing machine through spring connection, the furling mechanism comprises a furling unit which is fixedly connected along the circumferential direction of the inner side wall of the mashing cylinder through a plurality of shrink sleeves, the furling unit comprises an arc-shaped panel and a curved panel which are integrally formed and arranged up and down, then when the mashing end of the mashing arm moves downwards to the furling mechanism, the furling unit not only provides up and down force of a chisel head for food to be mashed of the furling mechanism, but also provides a compression spring for the furling mechanism, the furling mechanism provides horizontal compression force for the food, the mashing effect is enhanced, for food with smooth surface such as potatoes, if only a cylinder body and the mashing arm are used, the food is inevitably gathered to a place with small stress twice, so that the mashed food is not uniform, when the mashing end of the mashing arm moves upwards to be far away from the inner cylinder, the pressure spring promotes the hoop moves towards the direction far away from the inner wall of the outer barrel, the contraction sleeve contracts, and then the food gathering and collecting effect is achieved, so that the stress of the food is more uniform.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

FIG. 1 is a schematic view showing the structure of the vegetable masher of the present invention;

FIG. 2 is a schematic structural view of one of the technical solutions of the vegetable masher of the present invention;

FIG. 3 is a schematic structural view of the positioning assembly of the present invention;

FIG. 4 is a schematic view showing the construction of the mashing cylinder of the present invention;

FIG. 5 is a schematic structural view of the inner barrel of the present invention;

fig. 6 is a schematic structural view of the disc of the present invention.

Detailed Description

The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

As shown in fig. 1 to 6, the present invention provides a vegetable masher comprising:

the mashing device comprises a machine shell 1, a mashing cylinder 2 is fixedly arranged in the machine shell 1, a guide mechanism is fixedly arranged above the mashing cylinder 2 in the machine shell 1, and a guide hole 100 with a certain thickness is formed in the guide mechanism;

a mashing arm 37 provided through the guide hole 100 toward the mashing cylinder 2;

the transmission device 3 drives the mashing arm 37 to reciprocate up and down, and when the mashing end 6 of the mashing arm 37 moves downwards to the lowest position, the mashing arm is close to the bottom of the mashing cylinder 2 so as to press vegetables in the mashing cylinder 2.

In above-mentioned technical scheme, casing 1 has a door for take out after opening and smash a section of thick bamboo 2 to pieces, guiding mechanism can establish through the horizontal card and fix at casing 1 inside wall, also can be fixed in through the support on the casing 1 bottom surface, transmission 3 can be motor drive, also can be for piston rod hydraulic drive, in the use, opens the door, takes out and smashes a section of thick bamboo 2 to pieces, puts into the vegetables that wait to smash to pieces, will smash a section of thick bamboo 2 and put into casing 1 internal fixation, opens transmission 3, and transmission 3 drives smash arm 37 to pieces and do reciprocating motion from top to bottom along guiding hole 100 to pieces vegetables. Adopt this kind of scheme can give the effect of pounding arm 37 upper and lower guide through the setting of guiding hole 100, restricted the rotation effect of pounding arm 37 simultaneously and made it only can up-and-down motion, and then make to pound arm 37 along its up-and-down reciprocating motion, replace traditional artifical mode of pounding to pieces, whole device is small, simple structure, pounding to pieces efficiently, the effectual manpower and materials of having saved to the injury of some irritability food to the human body has been avoided.

In another technical solution, the transmission device 3 includes a motor 30, a small pulley 31 connected to a shaft end of the motor 30, a large pulley 32 paired with the small pulley 31, a worm 33 coaxially disposed and connected with the large pulley 32, a worm wheel 34 located at an upper end of the worm 33 and engaged with the worm wheel, a first connecting rod 35 having one end fixed to a central axis of the worm wheel 34, and a second connecting rod 36 hinged to the other end of the first connecting rod 35, wherein one end of the mashing arm 37 away from the mashing cylinder 2 is hinged to the second connecting rod 36. Adopt this kind of scheme through the setting of little band pulley 31 and big band pulley 32, the speed that little band pulley 31 changes, big band pulley 32 changes slowly, kinetic energy is unchangeable, the rotational speed of little band pulley 31 changes the torsion of big band pulley 32 into, the buffering is inhaled to inhale and is played the effect of a speed reduction increase torsion, the stability of effectual whole device that improves, the setting of worm 33 and turbine 34 converts horizontal rotation into along vertical direction's rotation to and through first connecting rod 35, second connecting rod 36, and smash the crank link mechanism that the pole formed with at big interaxial distance and multiaxis transmission power, solve the poor problem of traditional triturator stability.

In another aspect, the guide mechanism includes: the partition plate 10 is horizontally clamped in the machine shell 1 above the mashing barrel 2, a through hole 101 is formed in the partition plate 10, a linear bearing 102 is fixedly arranged in the through hole 101, and the linear bearing 102 forms the guide hole 100 for the mashing arm 37 to pass through. Adopt this kind of scheme can divide into the casing 1 through the setting of baffle 10 and be located the transmission chamber 11 of top, and be located the trituration chamber 12 of below, it is integrated and separate to transmit with triturating, when effectively avoiding food pollution, set up little band pulley 31 in order in less space, big band pulley 32, worm 33, turbine 34, and first connecting rod 35, second connecting rod 36, and triturating arm 37, convert the rotation of motor 30 along the horizontal direction into the reciprocating motion of triturating arm 37 along the vertical direction, with processing food, simple structure is small, convenient operation, be applicable to family and restaurant and use.

In another technical solution, the mashing barrel 2 is a cylindrical barrel body, and is fixedly arranged on the bottom surface of the mashing cavity 12 through a positioning assembly 4, the positioning assembly 4 includes a fixed hoop 40 and a movable hoop 41, one ends of which are hinged to each other, the fixed hoop 40 and the movable hoop 41 are both semi-circular structures, wherein the fixed hoop 40 is fixedly arranged on the bottom surface of the mashing cavity 12, one end of the fixed hoop 40, which is away from the hinge, is provided with a first ear cap, the first ear cap is provided with a first through hole, the free end of the movable hoop 41 is provided with a second ear cap, the second ear cap is provided with a second through hole, the positioning assembly 4 further includes a bolt 42, when the movable hoop 41 is rotated to be in butt joint with the free end of the fixed hoop 40, the first through hole and the second through hole are coaxially arranged, the bolt 42 penetrates through the first through hole and the second through hole to fix the first ear cap and the second ear cap, thereby fixing the mashing cylinder 2. Adopt this kind of scheme fixed triturating cylinder 2 fixed effectual, triturating cylinder 2 takes out and places the convenience simultaneously.

In another technical scheme, the shaft end of the output shaft of the motor 30 is connected with the rotating shaft of the small belt pulley 31 through a coupling 50, and the rotating shaft of the small belt pulley 31 is fixed in the machine shell 1 through a first bearing seat 5;

the inner side of the machine shell 1 is relatively provided with a first support 51 and a second support 53, the first support 51 is fixedly provided with a second bearing seat 52, one end of the rotating shaft of the large belt wheel 32, which is far away from the worm 33, is fixed through the second bearing seat 52, the second support 53 is fixedly provided with a third bearing seat 54, and one end of the worm 33, which is far away from the large belt wheel 32, is fixed through the third bearing seat 54. With this arrangement, the small pulley 31, the large pulley 32, the worm 33, the worm wheel 34, and the first link 35, the second link 36, and the mashing arm 37 can be arranged in order and stably in a small space.

In another technical scheme, smash end 6 of smashing arm 37 and be the arch structure that sets up downwards for the arch, smash the top surface diameter of end 6 of smashing arm 37 and slightly be less than smash a section of thick bamboo 2 internal diameter, motor 30 drives smash end 6 upward movement to the highest time of smashing arm 37, smash arm 37 follow smash and stretch out in the section of thick bamboo 2. With this solution the trituration effect can be enhanced.

In another technical scheme, the vegetable mashing machine further comprises a motor 30 speed regulator, and the motor 30 speed regulator is connected with the motor 30 to regulate the rotation speed of the motor 30. By adopting the scheme, the speed of the motor 30 can be adjusted according to actual needs.

In another technical scheme, a furling mechanism 20 which is through up and down is sleeved in the mashing cylinder 2, wherein the furling mechanism 20 is equivalent to an inner cylinder, the mashing cylinder is equivalent to an outer cylinder, the diameter of the top surface of the furling mechanism 20 is smaller than that of the mashing end 6 of the mashing arm 37, the furling mechanism 20 comprises a furling unit 200 which is fixedly connected with the inner side wall of the mashing cylinder 2 in the circumferential direction through a plurality of shrink sleeves 203, and the furling unit 200 comprises an arc-shaped panel 201 and a curved panel 202 which are integrally formed and arranged up and down;

wherein, the arc panel 201 with smash 2 inside walls of a section of thick bamboo and set up two at least pressure springs 22 from top to bottom at the interval, the lower terminal surface of curved plate 202 with smash the bottom surface butt of a section of thick bamboo 2, lie in between the terminal surface of arbitrary two adjacent arc panels 201 docks shrink sleeve 203 is interior from top to bottom at the interval and sets up two piece at least elastic ropes, works as smash arm 37 and smash end 6 downstream extremely when furling in mechanism 20, shrink sleeve 203 is tensile, the diameter that the cambered surface of arc panel 201 enclosed into the circle is slightly greater than smash arm 37 and smash end 6 top surface diameter, curved plate 202 enclose into the curved surface with smash arm 37 and smash the bottom surface looks adaptation of end 6. By adopting the scheme, when the mashing end 6 of the mashing arm 37 moves downwards to the gathering mechanism 20, the food to be mashed in the gathering mechanism 20 is not only provided with the up-and-down force of a chisel head, but also provided with the horizontal compression force provided to the gathering mechanism 20 by the compression spring 22, the gathering mechanism 20 provides the horizontal compression force for the food, the mashing effect is increased, and for the food with smooth surface, such as potatoes, if only a simple cylinder body and the mashing arm 37 are used, the food is inevitably gathered to a place with small stress twice, so that the mashed food is uneven, when the mashing end 6 of the mashing arm 37 moves upwards to be far away from the inner cylinder, the compression spring 22 pushes the shroud ring to move towards the direction far away from the inner wall of the outer cylinder, the shrinkage sleeve 203 shrinks, and then the food is gathered and collected, so that the stress of the food is more uniform.

In another technical scheme, casing 1 bottom surface outside is equipped with the support, casing 1 bottom surface is equipped with a pair of third through-hole, triturator still includes and adjusts seat 7, it set firmly in casing 1 bottom surface in and be located smash a section of thick bamboo 2 below to pieces, it includes a plurality of disc 70 that have a breach 71 to adjust seat 7, a plurality of disc 70 are folded in proper order and are established, and the breach 71 orientation of arbitrary two adjacent disc 70 is opposite, form from the last similar rectangular shape's that offers the perforating hole down, a pair of third through-hole and projection fall on the perforating hole inside and be located its both ends, it still includes a pair of bolt and nut to adjust seat 7, two bolts pass perforating hole and a pair of third through-hole respectively, wear out the end respectively with a pair of nut spiro union, the head of a pair of bolt supports establishes the upper surface at the disc 70 that is located the top, wherein, locating component 4 fixes the upper surface at the disc 70 that is located the top, the thickness of the disc 70 is 0.1-0.3 mm. Adopt this kind of scheme can make locating component 4 adjustable through the regulating part for the height of smashing a section of thick bamboo 2 bottom surface to pieces, promptly under the condition that does not change the whole setting of machine, adjust and smash to pieces the height between end 6 and the bottom surface of smashing a section of thick bamboo 2 when falling to the lower extreme completely of arm 37 to pieces, and then adjust once the volume of smashing to pieces food, increase vegetables bruisher's practicality.

The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. The application, modifications and variations of the vegetable masher of the present invention will be apparent to those skilled in the art.

While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims

1. A vegetable masher, characterized in that it comprises:

a mashing arm provided through the guide hole toward the mashing cylinder;

the transmission device drives the mashing arm to reciprocate up and down, and when the mashing end of the mashing arm moves downwards to the lowest position, the mashing arm is close to the bottom of the mashing cylinder so as to press vegetables in the mashing cylinder;

the transmission device comprises a motor, a small belt wheel connected with the shaft end of the motor, a large belt wheel matched with the small belt wheel, a worm coaxially arranged with and connected with the large belt wheel, a turbine positioned at the upper end of the worm and meshed with the worm, a first connecting rod with one end fixedly connected to the central shaft of the turbine, and a second connecting rod hinged with the other end of the first connecting rod, wherein one end of the mashing arm far away from the mashing cylinder is hinged with the second connecting rod;

the shaft end of the motor output shaft is connected with the rotating shaft of the small belt wheel through a coupling, and the rotating shaft of the small belt wheel is fixed in the shell through a first bearing seat;

a first support and a second support are oppositely arranged on the inner side of the shell, a second bearing seat is fixedly arranged on the first support, one end, far away from the worm, of a rotating shaft of the large belt wheel is fixed through the second bearing seat, a third bearing seat is fixedly arranged on the second support, and one end, far away from the large belt wheel, of the worm is fixed through the third bearing seat;

the mashing device is characterized in that a gathering mechanism which is communicated up and down is sleeved in the mashing cylinder, the diameter of the top surface of the mashing cylinder is smaller than that of the mashing end of the mashing arm, the gathering mechanism comprises a gathering unit which is fixedly connected with the mashing cylinder along the circumferential direction of the inner side wall of the mashing cylinder through a plurality of shrinkage sleeves, and the gathering unit comprises an arc-shaped panel and a curved plate which are integrally formed and arranged up and down;

2. A vegetable masher as in claim 1, wherein said guide means comprises: the baffle is positioned above the mashing cylinder and horizontally clamped in the shell, a through hole is formed in the baffle, a linear bearing is fixedly arranged in the through hole, and the linear bearing forms a guide hole for the mashing arm to pass through.

3. The vegetable mashing machine of claim 1, wherein the mashing barrel is a cylindrical barrel body fixedly arranged on the bottom surface of the mashing cavity through a positioning assembly, the positioning assembly comprises a fixed hoop and a movable hoop which are hinged, the fixed hoop and the movable hoop are of semicircular structures, the fixed hoop is fixedly arranged on the bottom surface of the mashing cavity, the free end of the fixed hoop is provided with a first ear cap, the first ear cap is provided with a first through hole, the free end of the movable hoop is provided with a second ear cap, the second ear cap is provided with a second through hole, the positioning assembly further comprises a bolt, when the movable hoop is rotated to be in butt joint with the free end of the fixed hoop, the first through hole and the second through hole are coaxially arranged, and the bolt sequentially penetrates through the first through hole and the second through hole to fix the first ear cap and the second ear cap.

4. The vegetable mashing machine of claim 1, wherein the mashing end of the mashing arm is of an ellipsoidal structure with a downward protrusion, the top diameter of the mashing end of the mashing arm is slightly smaller than the inner diameter of the mashing cylinder, and when the mashing end of the mashing arm is driven by the motor to move upwards to the highest position, the mashing arm extends out of the mashing cylinder.

5. A vegetable masher as in claim 1 further including a motor governor connected to said motor for regulating the speed of rotation of said motor.

6. The vegetable mashing machine as recited in claim 1, wherein a support is provided outside the bottom surface of the casing, a pair of third through holes is provided on the bottom surface of the casing, the mashing machine further comprises an adjusting seat which is fixedly provided on the bottom surface in the casing and is located below the mashing barrel, the adjusting seat comprises a plurality of discs having a gap, the discs are sequentially stacked, the gap orientations of any two adjacent discs are opposite, a through hole similar to a long strip shape is formed from top to bottom, the pair of third through holes and the projection fall inside the through hole and are located at both ends of the through hole, the adjusting seat further comprises a pair of bolts and nuts, the two bolts respectively penetrate through the through hole and the pair of third through holes, the penetrating ends are respectively screwed with the pair of nuts, the heads of the pair of bolts abut against the upper surface of the disc located at the top, and the positioning assembly is fixed on the upper surface of the disc located at the top, the thickness of the disc is 0.1-0.3 mm.