CN212602432U - Multifunctional turntable device for ceramic processing - Google Patents

Abstract

The utility model relates to the technical field of ceramic processing, in particular to a multifunctional turntable device for ceramic processing, which comprises a lifting workbench, a rotating shaft rotationally arranged on the lifting workbench, a turntable arranged at the top of the rotating shaft and a supporting device arranged on the lifting workbench; the turntable is detachably connected to the top of the rotating shaft; the supporting device is arranged on the peripheral side of the turntable and can be connected to the lifting workbench in a sliding manner so as to support the arm of the processor. Generally speaking, the person of processing not only can carry out altitude mixture control to elevating platform when using this multi-functional carousel device for ceramic machining, can also change the carousel immediately, can also support person of processing's arm simultaneously to improve person of processing's processing comfort level, so that process the pottery piece, and improve machining efficiency.

Description

Multifunctional turntable device for ceramic processing

Technical Field

The utility model relates to a ceramic machining technical field specifically is a ceramic machining uses multi-functional carousel device.

Background

In ceramic processing, a turntable device is often required in order to make the surface of the pottery delicate and beautiful.

The prior art discloses the application numbers as follows: 201620942307.8, it includes engine body shell, infinitely variable speed motor and power-off protection device, control panel is installed to engine body shell's upper end, fixing device is installed to engine body shell's top, the last transmission main shaft that installs of fixing device, elevating gear is installed at the top of transmission main shaft, the processing carousel is installed to elevating gear's upper end, infinitely variable speed motor installs in engine body shell's inside, and infinitely variable speed motor's output is connected with the bottom of transmission main shaft, but the device's carousel is inconvenient to be changed to be unfavorable for the continuous processing of a plurality of ceramic pieces, and be not equipped with arm strutting arrangement, processing comfort is lower.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to solve the problems, the utility model provides a multifunctional turntable device for ceramic processing, which can be convenient for processing ceramic parts.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a multifunctional turntable device for ceramic processing comprises a lifting workbench, a rotating shaft rotationally arranged on the lifting workbench, a turntable arranged at the top of the rotating shaft and a supporting device arranged on the lifting workbench; the turntable is detachably connected to the top of the rotating shaft; the supporting device is arranged on the peripheral side of the turntable and can be connected to the lifting workbench in a sliding manner so as to support the arm of the processor.

Preferably, the multifunctional turntable device for ceramic processing further comprises a connecting mechanism, wherein the connecting mechanism is mounted at the top of the rotating shaft so as to detachably connect the turntable to the rotating shaft.

Preferably, coupling mechanism includes connecting piece and elastic component, the axis of rotation top is equipped with first sliding tray and the slip hole of the first sliding tray of intercommunication and axis of rotation lateral wall, but connecting piece sliding connection is on first sliding tray and sliding hole, be equipped with the first end open-ended chamber that holds on the connecting piece, the second end of connecting piece is spherical end, the elastic component is arranged in and is held the intracavity, and elastic component one end butt is on the end wall that holds the chamber, the other end butt is on the end wall of first sliding tray, be equipped with the spherical groove of matching with the connecting piece second end on the carousel, the second end of connecting piece can stretch into or withdraw from spherical inslot, so that the carousel can dismantle and connect in the axis of rotation top.

Preferably, coupling mechanism inhales the piece including the first magnetism that can inhale each other magnetism and inhales the piece with the second, and the piece is inhaled to first magnetism and is set firmly in the axis of rotation top, and the piece is inhaled to the second magnetism and sets firmly on the carousel, inhales through first magnetism and inhale the piece magnetism with the second magnetism, can make the carousel can dismantle and connect in the axis of rotation top.

Preferably, the supporting device comprises a supporting rod and a supporting piece, the supporting rod is slidably connected to the lifting workbench, and the supporting piece is installed at the top of the supporting rod so as to support the arm of the processor.

Preferably, the supporting device further comprises a fixing knob, a second sliding groove is formed in the lifting workbench, the supporting rod comprises a fixing portion, and a first connecting portion and a second connecting portion which are arranged at two ends of the fixing portion, the supporting piece is installed at the top of the first connecting portion, the second connecting portion penetrates through the second sliding groove and extends out of the second sliding groove, threads are formed in the second connecting portion, the fixing knob is in threaded connection with the second connecting portion, the fixing knob is rotated, the fixing knob and the fixing portion can be abutted to the lifting workbench respectively and can be arranged on two sides of the second sliding groove, and the supporting rod is fixed on the lifting workbench.

Preferably, the support device further comprises an intermediate member, the intermediate member is designed in a ball joint structure, and the support member is mounted on the top of the first connecting portion through the intermediate member.

Preferably, the supporting device further comprises a sponge sleeve, and the sponge sleeve is sleeved on the supporting piece.

Preferably, this multi-functional carousel device is used in ceramic machining still includes fender mud dish, and fender mud dish is installed in the elevating platform top, is equipped with the chamber of gathering materials on keeping off mud dish, and the chamber bottom wall slope that just gathers materials sets up.

Preferably, the lowest point of the bottom wall of the material collecting cavity is provided with a discharge port communicated with the outside, the discharge port is in a horn-shaped structural design, and the caliber of one end of the discharge port communicated with the material collecting cavity is smaller than the caliber of one end of the discharge port communicated with the outside of the material collecting cavity.

(III) advantageous effects

The utility model provides a ceramic machining uses multi-functional carousel device possesses following beneficial effect: the person of processing is when using this multi-functional carousel device is used in ceramic machining, not only can carry out altitude mixture control to elevating platform, can also change the carousel immediately, can also support person of processing's arm simultaneously to improve person of processing's processing comfort level, so that process the pottery piece, and improve machining efficiency.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention,

in the drawings:

fig. 1 shows a schematic overall structure diagram of an embodiment of the present invention;

fig. 2 shows a schematic view of the overall structure of an embodiment of the present invention with a mud guard hidden;

fig. 3 shows a schematic structural diagram of a support mechanism in an embodiment of the present invention;

fig. 4 shows a schematic structural view of a mud flap in an embodiment of the present invention;

FIG. 5 shows a cross-sectional view at A-A in FIG. 4;

fig. 6 shows a first schematic structural diagram of a connection mechanism according to an embodiment of the present invention;

fig. 7 shows a second schematic structural view of the connection mechanism in the embodiment of the present invention;

fig. 8 shows a schematic structural view of a connector in an embodiment of the invention;

fig. 9 shows a schematic structural view of a rotating shaft in an embodiment of the present invention;

fig. 10 shows a third schematic structural diagram of the connection mechanism in the embodiment of the present invention.

In the figure: 2 lifting workbench, 21 second sliding groove, 3 rotating shaft, 31 first sliding groove, 32 sliding hole, 4 rotating disc, 41 spherical groove, 5 supporting mechanism, 51 supporting rod, 511 fixing part, 512 first connecting part, 513 second connecting part, 52 supporting part, 53 fixing knob, 54 intermediate part, 55 sponge sleeve, 6 connecting mechanism, 61 connecting part, 611 containing cavity, 62 elastic part, 63 first magnetic part, 64 second magnetic part, 7 mud blocking disc, 71 material collecting cavity and 72 material outlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

First embodiment, referring to fig. 1 to 10, an embodiment of the present invention provides a multifunctional turntable device for ceramic processing, including a lifting table 2, a rotating shaft 3 rotatably disposed on the lifting table 2, a turntable 4 disposed on the top of the rotating shaft 3, and a supporting device 5 disposed on the lifting table 2; the rotary table 4 is detachably connected to the top of the rotating shaft 3; the supporting device 5 is disposed on the periphery of the turntable 4, and the supporting device 5 is slidably connected to the elevating table 2 to support the arm of the processor.

Specifically, the height of the lifting workbench 2 can be adjusted to meet the use requirements of different processors. Carousel 4 is equipped with a plurality ofly, and after the ceramic member processing on the carousel 4 of arranging axis of rotation 3 in was accomplished, directly take off this carousel 4 and this ceramic member from axis of rotation 3 together to more change new carousel 4 and can process other ceramic members, and need not wait until this ceramic member air-dries the back and just take off, and carry out the processing of next ceramic member, thereby the continuous processing of the ceramic member of can being convenient for, and improve machining efficiency. Strutting arrangement 5 is equipped with a plurality ofly, in order to satisfy the user demand of a plurality of processing persons in 4 different position of carousel, and strutting arrangement 5 slidable connection is on elevating platform 2, in order to satisfy the demand of the processing person of different figure sizes, the processing person can be according to the in-service use demand of self, adjust strutting arrangement 5's position, in order to make things convenient for when carrying out ceramic part man-hour, support the arm, thereby reduce the processing fatigue degree of processing person, and then the processing of the ceramic part of being convenient for.

Generally speaking, the person of processing not only can carry out altitude mixture control to elevating platform 2 when using this multi-functional carousel device for ceramic machining, can also change carousel 4 immediately, can also support person of processing's arm simultaneously to improve person of processing's processing comfort level, so that process the pottery piece, and improve machining efficiency.

In this embodiment, the rotating shaft 3 may be rotatably connected to the lifting table 2 in a motor-driven manner. Specifically, still be equipped with on this multi-functional carousel device is used in ceramic machining and dismantle the toolbox of connecting on elevating platform 2 for place the processing work piece, improve the convenience of processing.

Further, it is convenient to mount the rotary disk 4 on the rotary shaft 3 or to detach the rotary disk 4 from the rotary shaft 3, so as to facilitate continuous processing of the ceramic member. The multifunctional turntable device for ceramic processing further comprises a connecting mechanism 6, wherein the connecting mechanism 6 is installed at the top of the rotating shaft 3, so that the turntable 4 can be detachably connected to the rotating shaft 3.

Further, in order to support the arm of the processor conveniently, the supporting device 5 includes a supporting rod 51 and a supporting member 52, the supporting rod 51 is slidably connected to the lifting table 2, and the supporting member 52 is installed on the top of the supporting rod 51 to support the arm of the processor.

Furthermore, in order to enable the same processor to fix the support rod 51 when adjusting the support rod to a proper position, the phenomenon that the support rod 51 slides randomly and needs to be adjusted repeatedly is avoided. The supporting device 5 further includes a fixing knob 53, the lifting platform 2 is provided with a second sliding groove 21, the supporting rod 51 includes a fixing portion 511 and a first connecting portion 512 and a second connecting portion 513 arranged at two ends of the fixing portion 511, the supporting member 52 is installed at the top of the first connecting portion 512, the second connecting portion 513 penetrates through the second sliding groove 21 and extends out of the second sliding groove 21, and the second connecting portion 513 is provided with threads, the fixing knob 53 is connected to the second connecting portion 513 through the threads, the fixing knob 53 is screwed, the fixing knob 53 and the fixing portion 511 can be respectively abutted to the lifting platform 2 by rotating the fixing knob 53 and can be arranged at two sides of the second sliding groove 21, so that the supporting rod 51 is fixed on the lifting platform 2.

In this embodiment, the first connecting portion 512 is designed to be a telescopic structure, so that the processor can adjust the overall height of the supporting member 52, thereby improving the processing comfort of the processor.

Further, in order to meet the supporting requirements when the arms of the processor are placed at different angle positions, the processing comfort of the processor is improved. The support device 5 further comprises an intermediate piece 54, the intermediate piece 54 is designed as a ball joint structure, and the support piece 52 is mounted on top of the first connection portion 512 through the intermediate piece 54.

Specifically, the intermediate member 54 includes a hinge seat and a ball head hinged to the hinge seat, the hinge seat is connected to the supporting member 52 through a screw, the ball head is connected to the top of the first connecting portion 512 through a screw, so that the supporting member 52 is installed on the top of the supporting rod 51, and the supporting member 52 has multiple degrees of freedom to support the arm of the processor, thereby improving the processing comfort of the processor.

Further, in order to improve the comfort of the support 52 for the arm of the user, the arm is prevented from being scratched by the support 52. The supporting device 5 further comprises a sponge sleeve 55, and the sponge sleeve 55 is sleeved on the supporting member 52.

Furthermore, in order to collect the waste scraps generated in the processing process of the ceramic piece, the pollution to the external environment is avoided. This multi-functional carousel device is used in ceramic machining still includes fender mud tray 7, and fender mud tray 7 is installed in elevating platform 2 tops, is equipped with the chamber 71 that gathers materials on fender mud tray 7, and gathers materials the slope of chamber 71 diapire and set up.

In this embodiment, the value of the inclination angle B of the bottom wall of the collecting cavity 71 is 2-15 degrees, so that the scraps falling into the collecting cavity 71 can be automatically gathered under the action of self gravity, and the cleaning of the scraps is facilitated.

Further, in order to facilitate discharging of the waste chips in the material collecting cavity 71, a material discharging opening 72 communicated with the outside is arranged at the lowest point of the bottom wall of the material collecting cavity 71, the material discharging opening 72 is in a horn-shaped structural design, and the caliber of one end, communicated with the material collecting cavity 71, of the material discharging opening 72 is smaller than that of one end, communicated with the outside of the material collecting cavity 71, of the material discharging opening 72, so that the phenomenon that the waste chips entering the material discharging opening 72 block the inside of the material discharging opening 72 is avoided.

In the second embodiment, only the differences from the first embodiment will be described in detail with reference to the drawings.

Referring to fig. 6 to 9, in this embodiment, in order to facilitate the detachable connection of the turntable 4 to the top of the rotating shaft 3, the connecting mechanism 6 includes a connecting member 61 and an elastic member 62, the top of the rotating shaft 3 is provided with a first sliding groove 31 and a sliding hole 32 communicating the first sliding groove 31 with the side wall of the rotating shaft 3, the connecting member 61 is slidably connected to the first sliding groove 31 and the sliding hole 32, the connecting member 61 is provided with a receiving cavity 611 with an open first end, the second end of the connecting member 61 is a spherical end, the elastic member 62 is disposed in the receiving cavity 611, one end of the elastic element 62 abuts against the end wall of the accommodating cavity 611, the other end abuts against the end wall of the first sliding groove 31, a spherical groove 41 matched with the second end of the connecting element 61 is arranged on the rotary disc 4, and the second end of the connecting element 61 can extend into or withdraw from the spherical groove 41, so that the rotary disc 4 can be detachably connected to the top of the rotating shaft 3.

Specifically, during installation, the elastic member 62 is compressed into the accommodating cavity 611, so that the elastic member 62 and the connecting member 61 can be placed into the first sliding groove 31, one end of the elastic member 62 abuts against the end wall of the accommodating cavity 611, the other end abuts against the end wall of the first sliding groove 31, and then under the elastic force of the elastic member 62, the second end of the connecting member 61 can pass through the sliding hole 32 and extend out of the side wall of the rotating shaft 3; when disassembling, the second end of the connecting member 61 is pressed to exit the sliding hole 32, so that the connecting member 61 and the elastic member 62 can be taken out of the first sliding groove 31.

In this embodiment, the turntable 4 is provided with a mounting hole into which the top of the rotating shaft 3 can be inserted, and the spherical groove 41 is provided on the side wall of the mounting hole; when the rotating disc 4 needs to be installed on the rotating shaft 3, the installation hole is inserted into the rotating shaft 3 and is continuously pressed downwards, in the process, the side wall of the installation hole extrudes the second end of the connecting piece 61 to enable the second end to retract into the sliding hole 32 until the installation hole is completely inserted into the rotating shaft 3, then the rotating disc 4 is rotated to enable the spherical groove 41 to be opposite to the sliding hole 32, and then the second end of the connecting piece 61 can be clamped into the spherical groove 41 under the elastic force action of the elastic piece 62, so that the rotating disc 4 is installed on the rotating shaft 3; on the contrary, when the rotating disc 4 needs to be removed from the rotating shaft 3, an upward force is applied to the rotating disc 4, and the spherical groove 41 exerts a pressure on the second end of the connecting member 61, so that it is retracted into the sliding hole 32 and exits from the spherical groove 41, thereby removing the rotating disc 4 from the rotating shaft 3. In this embodiment, the elastic member 62 is preferably a pressure spring.

In the third embodiment, only the differences from the first embodiment will be described in detail with reference to the drawings.

Referring to fig. 6, 7 and 10, in this embodiment, in order to facilitate the realization of detachably connecting the turntable 4 to the top of the rotation shaft 3, the connection mechanism 6 includes a first magnetic attraction member 63 and a second magnetic attraction member 64 that can be magnetically attracted to each other, the first magnetic attraction member 63 is fixedly disposed on the top of the rotation shaft 3, the second magnetic attraction member 64 is fixedly disposed on the turntable 4, and the first magnetic attraction member 63 and the second magnetic attraction member 64 magnetically attract to each other, so that the turntable 4 can be detachably connected to the top of the rotation shaft 3.

Specifically, the first magnetic attraction piece 63 is fixedly connected to the top of the rotating shaft 3 in an adhesive manner, the second magnetic attraction piece 64 is fixedly connected to the rotating disc 4 in an adhesive manner, the first magnetic attraction piece 63 is close to the second magnetic attraction piece 64, and the rotating disc 4 can be fixedly mounted on the rotating shaft 3; conversely, the rotating disc 4 can be removed from the rotating shaft 3 by separating the first magnetic attraction piece 63 from the second magnetic attraction piece 64.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. A multifunctional turntable device for ceramic processing comprises a lifting workbench (2), a rotating shaft (3) rotatably arranged on the lifting workbench (2) and a turntable (4) arranged at the top of the rotating shaft (3), and is characterized by further comprising a supporting device (5) arranged on the lifting workbench (2);

the rotary table (4) is detachably connected to the top of the rotating shaft (3);

the supporting device (5) is arranged on the peripheral side of the turntable (4), and the supporting device (5) is connected to the lifting workbench (2) in a sliding mode so as to support the arm of a processor.

2. A multifunctional turntable device for ceramic processing according to claim 1, characterized in that it further comprises a connection mechanism (6), said connection mechanism (6) being mounted on top of said rotatable shaft (3) for detachably connecting said turntable (4) to said rotatable shaft (3).

3. The multifunctional rotary table device for ceramic processing according to claim 2, wherein the connecting mechanism (6) comprises a connecting member (61) and an elastic member (62), the top of the rotating shaft (3) is provided with a first sliding groove (31) and a sliding hole (32) communicating the first sliding groove (31) with the side wall of the rotating shaft (3), the connecting member (61) is slidably connected to the first sliding groove (31) and the sliding hole (32), the connecting member (61) is provided with a receiving cavity (611) with a first open end, the second end of the connecting member (61) is a spherical end, the elastic member (62) is disposed in the receiving cavity (611), one end of the elastic member (62) abuts against the end wall of the receiving cavity (611), the other end abuts against the end wall of the first sliding groove (31), the rotary table (4) is provided with a spherical groove (41) matching with the second end of the connecting member (61), the second end of the connecting piece (61) can extend into or withdraw from the spherical groove (41), so that the rotating disc (4) can be detachably connected to the top of the rotating shaft (3).

4. The multifunctional rotary table device for ceramic processing as claimed in claim 2, wherein the connecting mechanism (6) comprises a first magnetic attraction member (63) and a second magnetic attraction member (64) which are magnetically attracted to each other, the first magnetic attraction member (63) is fixedly arranged on the top of the rotary shaft (3), the second magnetic attraction member (64) is fixedly arranged on the rotary table (4), and the first magnetic attraction member (63) and the second magnetic attraction member (64) are magnetically attracted to enable the rotary table (4) to be detachably connected to the top of the rotary shaft (3).

5. The turntable device for ceramic processing according to claim 1, wherein the supporting device (5) comprises a supporting rod (51) and a supporting member (52), the supporting rod (51) is slidably connected to the lifting table (2), and the supporting member (52) is mounted on top of the supporting rod (51) to support the arm of the processor.

6. The multifunctional rotary table device for ceramic processing according to claim 5, wherein the supporting device (5) further comprises a fixing knob (53), the lifting table (2) is provided with a second sliding groove (21), the supporting rod (51) comprises a fixing portion (511) and a first connecting portion (512) and a second connecting portion (513) which are arranged at two ends of the fixing portion (511), the supporting member (52) is mounted on the top of the first connecting portion (512), the second connecting portion (513) penetrates through the second sliding groove (21) and extends out of the second sliding groove (21), the second connecting portion (513) is provided with a thread, the fixing knob (53) is connected to the second connecting portion (513) in a threaded manner, the fixing knob (53) is rotated to enable the fixing knob (53) and the fixing portion (511) to abut against the lifting table (2) respectively, and are arranged at both sides of the second sliding groove (21) to fix the support rod (51) on the lifting workbench (2).

7. The multifunctional turntable device for ceramic processing according to claim 6, characterized in that said supporting device (5) further comprises an intermediate member (54), said intermediate member (54) is designed as a ball joint structure, and said supporting member (52) is mounted on top of said first connection portion (512) through said intermediate member (54).

8. The multifunctional turntable device for ceramic processing according to claim 5, characterized in that said supporting device (5) further comprises a sponge sleeve (55), said sponge sleeve (55) being sleeved on said supporting member (52).

9. The multifunctional turntable device for ceramic processing according to claim 1, further comprising a mud guard (7), wherein the mud guard (7) is mounted on the top of the lifting table (2), a material collecting cavity (71) is arranged on the mud guard (7), and the bottom wall of the material collecting cavity (71) is inclined.

10. The multifunctional rotary table device for ceramic processing as claimed in claim 9, wherein a discharge opening (72) communicated with the outside is arranged at the lowest point of the bottom wall of the material collecting cavity (71), the discharge opening (72) is of a trumpet-shaped structure design, and the caliber of one end of the discharge opening (72) communicated with the material collecting cavity (71) is smaller than that of one end of the discharge opening (72) communicated with the outside of the material collecting cavity (71).

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