CN219926536U - Raw ceramic chip splitting machine - Google Patents

Abstract

The utility model provides a green ceramic chip cracking machine, which comprises a platform, a cracking tray, a manipulator, a lifting bracket and a pressing seat, wherein two horizontal transmission assemblies and a door-shaped frame are arranged on the platform; the split tray is arranged on the horizontal transmission assembly; the manipulator is connected to the platform, and the overhanging end of the manipulator is connected with the vacuum adsorption frame; the lifting bracket is arranged on the platform; the lower pressing seat is connected to the door-shaped frame in a sliding way along the up-down direction; a plurality of pressing pendulum seats are rotationally connected on the split tray. According to the green ceramic tile splitting machine provided by the utility model, the horizontal transmission assembly can drive the splitting tray and the whole green ceramic tile above the splitting tray to synchronously move to the lower part of the gate-type frame, the lifting bracket firstly moves upwards and lifts the whole green ceramic tile to move upwards for a certain distance, then the pressing seat moves downwards so as to split the whole green ceramic tile, the pressing swing seat on the splitting tray can perform pressing limiting on the edge position of the whole green ceramic tile, the accuracy of the splitting position is ensured, and the splitting quality is improved.

Description

Raw ceramic chip splitting machine

Technical Field

The utility model belongs to the technical field of green ceramic chip processing, and particularly relates to a green ceramic chip splitting machine.

Background

The green ceramic tile splitting machine is mainly used for splitting a large block of green ceramic tiles of a whole tile to obtain a plurality of green ceramic tiles with smaller volumes and regular shapes. The splitting machine generally performs multiple pressing splitting on the whole positive ceramic chip in the longitudinal and transverse directions so as to form cracks between adjacent rows or columns of green ceramic chips, thereby facilitating the subsequent obtaining of a plurality of rectangular small green ceramic chips.

In the prior art, operators place the whole large green ceramic chips on a translation seat of a splitting machine, along with the requirement of splitting row by row or row by row, a sliding seat can drive the green ceramic chips above to horizontally move, and the position of the green ceramic chips is easily dislocated in the moving process, so that the dimensional accuracy of the green ceramic chip splitting is influenced, and the splitting quality is difficult to guarantee.

Disclosure of Invention

The utility model aims to provide a green ceramic tile splitting machine which can ensure good feeding accuracy and is beneficial to improving splitting quality.

In order to achieve the above purpose, the utility model adopts the following technical scheme: provided is a green tile splitting machine, comprising:

the platform is provided with two parallel horizontal transmission assemblies, and a door-shaped frame is arranged above the two horizontal transmission assemblies in a crossing manner;

the split tray is arranged on the horizontal transmission assembly and is provided with a containing cavity for supporting the peripheral edge of the whole green ceramic chip, and the bottom wall of the containing cavity is provided with split holes which are penetrated up and down;

the manipulator is connected to the platform, and the overhanging end of the manipulator is connected with a vacuum adsorption frame for adsorbing the whole green ceramic chip;

the lifting bracket is arranged on the platform and positioned between the two horizontal transmission assemblies, and the top of the lifting bracket is provided with an upwards-protruding conical surface;

the lower pressing seat is connected to the door-shaped frame in a sliding manner along the up-down direction, and a conical groove which is concavely arranged on the bottom surface of the lower pressing seat and matched with the conical surface to split the whole green ceramic chip is formed;

the crack tray is rotatably connected with a plurality of pressing swing seats capable of horizontally swinging, the pressing swing seats are arranged close to the peripheral edges of the crack tray, and the overhanging ends of the pressing swing seats can horizontally swing to press the top surfaces of the whole green ceramic chips.

In one possible implementation manner, a connecting column connected with the manipulator is arranged on the top surface of the vacuum adsorption frame, an adsorption head for adsorbing the fracture tray is arranged on the vacuum adsorption frame in a penetrating manner along the up-down direction, and the upper end of the adsorption head is connected with the vacuum pump through a connecting pipe.

In some embodiments, the vacuum adsorption frame is provided with a plurality of through holes which penetrate up and down, and the through holes are positioned at the outer sides of the connecting columns.

In one possible implementation, the pressing seat is provided with an auxiliary groove which is connected with the conical groove and extends along the axis of the through conical groove, and the section of the auxiliary groove is rectangular.

In one possible implementation manner, a rotary cylinder for driving the pressing swing seat to swing horizontally is arranged at the bottom of the split tray, and the output end of the rotary cylinder extends upwards and is connected with the pressing swing seat.

In some embodiments, the swing end of the pressing swing seat is provided with a downward extending pressing post, and the lower end of the pressing post is sleeved with a flexible head.

In one possible implementation, the horizontal transmission assembly includes two pulleys and a transmission belt wound on the two pulleys, and the split tray is connected to the transmission belt of the two horizontal transmission assemblies, wherein one pulley is connected with a stepping motor.

In some embodiments, the horizontal transmission assembly and the gate frame are respectively provided with two groups, the two groups of horizontal transmission assemblies are respectively provided with a split tray, and the two groups of horizontal transmission assemblies and the two gate frames are arranged in a one-to-one correspondence.

In one possible implementation manner, the platform is further provided with two sliding rails parallel to the horizontal transmission assembly, the sliding rails are connected with sliding seats in a sliding manner, and the sliding seats are supported with feeding trays for placing the whole green ceramic chips.

In some embodiments, two groups of lifting columns which are respectively arranged close to two sides of the same end part of the sliding rail and two groups of telescopic members which are respectively arranged in a one-to-one correspondence manner with the two groups of lifting columns are arranged on the platform, each group of lifting columns comprises two lifting columns for supporting the feeding tray, and each group of telescopic members comprises two telescopic members which are respectively arranged towards the sliding rail so as to be supported below the feeding tray;

the lifting column can lift the feeding trays to be moved upwards to be separated from the sliding seat, and the overhanging ends of the telescopic pieces are horizontally inserted between the two feeding trays at the lowest layer; the lifting column can also lower the lowest feeding tray and enable the lowest feeding tray to fall onto the sliding seat.

Compared with the prior art, the scheme provided by the embodiment of the utility model has the advantages that the horizontal transmission assembly can drive the split tray and the whole green ceramic chip above the split tray to synchronously move to the position below the gate-shaped frame corresponding to the lifting bracket, the lifting bracket moves upwards and lifts the whole green ceramic chip upwards for a certain distance, then the lower pressing seat moves downwards to enable the conical groove and the conical surface to be matched with each other to realize the split of the whole green ceramic chip, the abutting-pressing swing seat on the split tray can perform abutting-pressing limiting on the edge position of the whole green ceramic chip, the position dislocation generated in the split process of the whole green ceramic chip is avoided, the accuracy of the split position is ensured, and the split quality is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a green chip splitting machine according to an embodiment of the present utility model;

FIG. 2 is a schematic view of another angle of the green tile splitting machine according to the embodiment of the present utility model;

FIG. 3 is a schematic view of a partial enlarged structure of I in FIG. 2 according to an embodiment of the present utility model;

FIG. 4 is a schematic view of the lifting bracket, the pressing base, the split tray, the pressing swing base and the door frame of FIG. 1 according to an embodiment of the present utility model;

FIG. 5 is a schematic view of another angle of FIG. 4 according to an embodiment of the present utility model;

fig. 6 is a right-side view of the pressing seat of the lifting bracket in fig. 1 according to an embodiment of the present utility model.

Wherein, each reference sign in the figure:

1. a platform; 11. a horizontal drive assembly; 12. a door-shaped frame; 13. a belt wheel; 14. a transmission belt; 2. a split tray; 21. a receiving chamber; 22. a split hole; 3. a manipulator; 31. a vacuum adsorption frame; 32. a connecting column; 33. an adsorption head; 34. a through hole; 41. lifting the bracket; 411. a conical surface; 42. pressing down a seat; 421. a conical groove; 43. an auxiliary groove; 5. pressing the swing seat; 51. a rotary cylinder; 52. pressing down a column; 61. a slide rail; 62. a slide; 63. a feed tray; 71. lifting columns; 72. a telescoping member; 8. whole green ceramic tile.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or be indirectly on the other element. It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present utility model. The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a number" is two or more, unless explicitly defined otherwise.

Referring to fig. 1 to 6, a green ceramic tile splitting machine according to the present utility model will be described. The green ceramic chip splitting machine comprises a platform 1, a splitting tray 2, a manipulator 3, a lifting bracket 41 and a pressing seat 42, wherein the platform 1 is provided with two parallel horizontal transmission assemblies 11, and a door-shaped frame 12 is arranged above the two horizontal transmission assemblies 11 in a straddling manner; the split tray 2 is arranged on the horizontal transmission assembly 11, the split tray 2 is provided with a containing cavity 21 for bearing the peripheral edge of the whole green ceramic tile 8, and the bottom wall of the containing cavity 21 is provided with a split hole 22 which penetrates up and down; the manipulator 3 is connected to the platform 1, and the overhanging end of the manipulator 3 is connected with a vacuum adsorption frame 31 for adsorbing the whole green ceramic chip 8; the lifting bracket 41 is arranged on the platform 1 and between the two horizontal transmission assemblies 11, and the top of the lifting bracket 41 is provided with an upwards-protruding conical surface 411; the lower pressing seat 42 is connected to the door-shaped frame 12 in a sliding manner along the up-down direction, and a conical groove 421 which is arranged in a concave manner on the bottom surface of the lower pressing seat 42 and is matched with the conical surface 411 to split the whole green ceramic chip 8;

the split tray 2 is rotatably connected with a plurality of pressing pendulum seats 5 capable of horizontally swinging, the pressing pendulum seats 5 are arranged close to the peripheral edges of the split tray 2, and the overhanging ends of the pressing pendulum seats 5 can horizontally swing to press the top surfaces of the whole green ceramic chips 8.

Compared with the prior art, the green ceramic tile splitting machine provided by the embodiment has the advantages that the horizontal transmission assembly 11 can drive the splitting tray 2 and the whole green ceramic tile 8 above the splitting tray to synchronously move to the position below the gate-shaped frame 12 corresponding to the lifting bracket 41, the lifting bracket 41 moves upwards and lifts the whole green ceramic tile 8 upwards by a certain distance, then the lower pressing seat 42 moves downwards to enable the conical groove 421 and the conical surface 411 to be matched with each other to realize splitting operation of the whole green ceramic tile 8, the pressing swing seat 5 on the splitting tray 2 can press and limit the edge position of the whole green ceramic tile 8, position dislocation in the splitting process of the whole green ceramic tile 8 is avoided, the accuracy of the splitting position is guaranteed, and the splitting quality is improved.

In one possible implementation, the above-described feature vacuum adsorption frame 31 adopts a structure as shown in fig. 3. Referring to fig. 3, a connection column 32 connected with the manipulator 3 is provided on the top surface of the vacuum adsorption frame 31, and an adsorption head 33 for adsorbing the fracture tray 2 is provided on the vacuum adsorption frame 31 in a penetrating manner in the up-down direction, and the upper end of the adsorption head 33 is connected with the vacuum pump through a connection pipe.

In this embodiment, the connecting column 32 disposed on the manipulator 3 is used for connecting with the vacuum adsorption frame 31, the connecting column 32 is connected to the central position of the vacuum adsorption frame 31, and the adsorption head 33 penetrates through the vacuum adsorption frame 31 and is connected with the vacuum pump, so that the adsorption head 33 can be vacuum adsorbed on the top surface of the split tray 2, and the reliability of adsorption is ensured.

In some embodiments, the above-described feature vacuum adsorption frame 31 adopts a structure as shown in fig. 3. Referring to fig. 3, the vacuum adsorption frame 31 is provided with a plurality of through holes 34 penetrating up and down, and the through holes 34 are located outside the connecting posts 32. The through holes 34 arranged on the vacuum adsorption frame 31 can effectively reduce the self weight of the vacuum adsorption frame 31, and can also achieve the purpose of saving materials. Four through holes 34 are provided and are arranged in a rectangular form outside four corners of the connecting column 32.

In one possible implementation, the above-described feature presses down on the seat 42 in a configuration as shown in fig. 6. Referring to fig. 6, the pressing seat 42 is provided with an auxiliary groove 43 connected to the tapered groove 421 and extending along an axis passing through the tapered groove 421, and the auxiliary groove 43 has a rectangular cross section. An auxiliary groove 43 is provided in the pressing base 42 in addition to the splitting of the entire green ceramic tile 8 by the cooperation of the tapered groove 421 and the tapered surface 411. The auxiliary slot 43 has a rectangular cross section, and when the lifting bracket 41 lifts the whole green ceramic tile 8 upwards by using the conical surface 411, the pressing seat 42 moves downwards to split the corresponding part of the whole green ceramic tile 8, so as to avoid the situation that the whole green ceramic tile 8 is lifted upwards by the splitting position and is interfered with the inner wall of the conical slot 421. The auxiliary groove 43 can avoid the position of the green ceramic chip to be split, so that the thoroughly of splitting the whole green ceramic chip 8 is ensured.

In one possible implementation, the feature fracture tray 2 adopts the structure shown in fig. 5. Referring to fig. 5, a rotary cylinder 51 for driving the pressing swing seat 5 to swing horizontally is arranged at the bottom of the cracking tray 2, and an output end of the rotary cylinder 51 extends upwards and is connected with the pressing swing seat 5.

In this embodiment, the rotary cylinder 51 disposed at the bottom of the split tray 2 can drive the pressing swing seat 5 to rotate along the horizontal direction, so that the pressing swing seat 5 can horizontally rotate to the upper side of the edge position of the whole green ceramic tile 8, thereby realizing the reliable pressing limiting effect on the whole green ceramic tile 8, ensuring that the whole green ceramic tile 8 has good positional accuracy in the subsequent splitting process, and improving the splitting quality.

In some embodiments, the above-mentioned feature pressing pendulum base 5 adopts a structure as shown in fig. 5. Referring to fig. 5, the swing end of the pressing swing seat 5 is provided with a downward extending pressing post 52, and the lower end of the pressing post 52 is sleeved with a flexible head.

In this embodiment, the splitting tray 2 supports the peripheral edge of the whole green ceramic tile 8 by using the accommodating cavity 21 on the top surface, and the splitting holes 22 provided on the bottom wall of the accommodating cavity 21 are used for vertically corresponding to the lifting bracket 41 below to the position where the whole green ceramic tile 8 needs to be split, so as to achieve the splitting operation on the corresponding position of the whole green ceramic tile 8 by using the cooperation of the conical surface 411 and the conical groove 421. The lower pressing column 52 which presses the lower end of the swinging seat 5 can be contacted with the top surface of the whole green ceramic chip 8 to limit the upper and lower positions of the whole green ceramic chip 8.

Specifically, the lower pressing column 52 gradually approaches the peripheral position of the whole green ceramic tile 8 in the process of horizontally swinging the pressing swing seat 5 until the lower pressing column 52 is positioned on the top surface of the peripheral edge of the whole green ceramic tile 8, and the lower pressing column 52 can be used for matching with the limiting function of the accommodating cavity 21, so that the stability of the relative position of the whole green ceramic tile 8 and the cracking tray 2 in the splitting process is ensured, accurate cracking of two adjacent rows of green ceramic tiles is further ensured, the cracking precision is improved, and the cracking quality is ensured.

On the basis of the structure, the lower end of the lower pressing column 52 is also sleeved with a flexible head, so that the lower pressing column 52 is flexibly attached to the top surface of the whole green ceramic chip 8, and friction damage to the top surface of the whole green ceramic chip 8 is avoided.

In one possible implementation, the characteristic horizontal transmission assembly 11 adopts the structure shown in fig. 1, 2, 4 and 5. Referring to fig. 1, 2, 4 and 5, the horizontal transmission assembly 11 includes two pulleys 13 and a transmission belt 14 wound around the two pulleys 13, and the split tray 2 is connected to the transmission belt 14 of the two horizontal transmission assemblies 11, wherein one pulley 13 is connected with a stepping motor.

In this embodiment, the horizontal transmission assembly 11 adopts a belt transmission structure, and utilizes the transmission belt 14 sleeved on the two belt pulleys 13 to horizontally convey the split tray 2 and the whole raw ceramic chip 8, wherein one belt pulley 13 is driven by a stepping motor, so that the whole raw ceramic chip 8 is conveniently driven to feed at a fixed distance, the splitting position is ensured to effectively correspond to the cone angle position of the conical surface 411 and the conical groove 421, the effective splitting between two adjacent rows or two adjacent columns of raw ceramic chips is realized, and the accuracy of splitting is improved.

In some embodiments, the above-described feature level drive assembly 11 and gantry 12 take the configuration shown in fig. 1 and 2. Referring to fig. 1 and 2, two sets of horizontal transmission assemblies 11 and two gate-type frames 12 are respectively provided, two sets of horizontal transmission assemblies 11 are respectively provided with a split tray 2, and the two sets of horizontal transmission assemblies 11 and the two gate-type frames 12 are arranged in a one-to-one correspondence manner. Two groups of horizontal transmission assemblies 11 are arranged on the platform 1, the extending directions of the two groups of horizontal transmission assemblies 11 are consistent, and the two gate-shaped frames 12 are in one-to-one correspondence with the two groups of horizontal transmission assemblies 11, so that synchronous splitting is convenient to achieve, and splitting efficiency is improved.

In one possible implementation, the feature platform 1 adopts the structure shown in fig. 1 and fig. 2. Referring to fig. 1 and 2, the platform 1 is further provided with two sliding rails 61 parallel to the horizontal transmission assembly 11, the sliding rails 61 are slidably connected with sliding bases 62, and the sliding bases 62 support a feeding tray 63 for placing the whole green ceramic chips 8. The slide seat 62 is utilized to drive the feeding tray 63 and the whole green ceramic chips 8 to horizontally move, so that orderly feeding to the position of the manipulator 3 is realized, and raw materials are provided for the cracking of the subsequent whole green ceramic chips 8.

In some embodiments, the feature platform 1 adopts the structure shown in fig. 1 and 2. Referring to fig. 1 and 2, the platform 1 is provided with two sets of lifting columns 71 respectively close to two sides of the same end of the sliding rail 61 and two sets of telescopic members 72 respectively corresponding to the two sets of lifting columns 71 one by one, each set of lifting columns 71 comprises two lifting columns 71 for supporting the feeding tray 63, and each set of telescopic members 72 comprises two telescopic members 72 respectively arranged towards the sliding rail 61 so as to be supported below the feeding tray 63;

wherein the lifting column 71 can lift the feeding trays 63 up to a position where the lifting column is separated from the slide 62, and the overhanging ends of the telescopic members 72 are horizontally inserted between the two feeding trays 63 at the lowest layer; the lifting column 71 is also capable of lowering the lowest feed tray 63 and causing the lowest feed tray 63 to drop onto the slide 62.

Each group of lifting columns 71 respectively comprises two lifting columns 71 which are arranged at intervals on the trend of the sliding rail 61, each two groups of lifting columns 71 comprise four lifting columns 71 which are distributed in a rectangular shape, the four lifting columns 71 respectively correspond to four corners of the split tray 2, effective jacking of the split tray 2 is guaranteed, and the four lifting columns 71 can be synchronously driven through one lifting driving piece, so that the action synchronism is improved, and meanwhile, the space and the cost are saved.

When feeding is needed, a plurality of layers of split trays 2 are placed on the sliding seat 62 in advance, the lifting columns 71 move upwards to enable the split trays 2 to move upwards and separate from the sliding seat 62, the telescopic piece 72 horizontally corresponds to between the two split trays 2 at the lowest position, the overhanging ends of the telescopic piece 72 extend outwards and are supported below the plurality of split trays 2 at the upper position, only the split tray 2 at the lowest layer is left to fall onto the sliding seat 62 along with the lifting columns 71, the sliding seat 62 is utilized to drive the split tray 2 at the lowest layer and the whole green ceramic tile 8 to move to the position corresponding to the upper and lower positions of the manipulator 3, sequential feeding of the single split tray 2 is achieved, the accuracy of feeding positions is guaranteed, improvement of the split efficiency of the whole green ceramic tile 8 is facilitated, and labor intensity of operators is reduced.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. The green chip splitting machine is characterized by comprising:

the platform is provided with two parallel horizontal transmission assemblies, and a door-shaped frame is arranged above the two horizontal transmission assemblies in a crossing manner;

the split tray is arranged on the horizontal transmission assembly and is provided with a containing cavity for bearing the peripheral edge of the whole green ceramic tile, and the bottom wall of the containing cavity is provided with split holes which are penetrated up and down;

the manipulator is connected to the platform, and the overhanging end of the manipulator is connected with a vacuum adsorption frame for adsorbing the whole green ceramic chip;

the lifting bracket is arranged on the platform and positioned between the two horizontal transmission assemblies, and the top of the lifting bracket is provided with a conical surface which protrudes upwards;

the lower pressing seat is connected to the gate-type frame in a sliding manner along the up-down direction, and a conical groove which is concavely arranged on the bottom surface of the lower pressing seat and matched with the conical surface to split the whole green ceramic chip is formed;

the cracking tray is rotatably connected with a plurality of pressing swing seats capable of horizontally swinging, the pressing swing seats are arranged close to the peripheral edges of the cracking tray, and the pressing swing seats are provided with swinging ends capable of horizontally swinging to press the top surfaces of the whole green ceramic chips.

2. The green chip cracking machine of claim 1, wherein a connecting column connected with the manipulator is arranged on the top surface of the vacuum adsorption frame, an adsorption head for adsorbing the cracking tray is arranged on the vacuum adsorption frame in a penetrating manner along the up-down direction, and the upper end of the adsorption head is connected with a vacuum pump through a connecting pipe.

3. The green chip cracking machine of claim 2, wherein a plurality of through holes penetrating up and down are arranged on the vacuum adsorption frame, and the through holes are positioned outside the connecting columns.

4. The green chip breaking machine according to claim 1, wherein the pressing base is provided with an auxiliary groove which is connected with the conical groove and extends along an axis passing through the conical groove, and the section of the auxiliary groove is rectangular.

5. The green chip cracking machine of claim 1, wherein a rotary cylinder for driving the pressing swing seat to swing horizontally is arranged at the bottom of the cracking tray, and an output end of the rotary cylinder extends upwards and is connected with the pressing swing seat.

6. The green chip cracking machine of claim 5, wherein the swing end of the pressing swing seat is provided with a downward extending pressing post, and the lower end of the pressing post is sleeved with a flexible head.

7. A green sheet splitting machine as claimed in any one of claims 1 to 6 wherein said horizontal drive assembly includes two pulleys and a drive belt wound around both said pulleys, said split trays being connected to the drive belt of both said horizontal drive assemblies, one of said pulleys having a stepper motor connected thereto.

8. The green chip cracking machine according to any one of claims 1 to 6, wherein two groups of horizontal transmission assemblies and two groups of gate-shaped frames are respectively arranged, the two groups of horizontal transmission assemblies are respectively provided with the cracking trays, and the two groups of horizontal transmission assemblies and the two groups of gate-shaped frames are arranged in a one-to-one correspondence.

9. The green tile splitting machine of any one of claims 1 to 6, wherein the platform is further provided with two sliding rails parallel to the horizontal transmission assembly, a sliding seat is slidably connected to the sliding rails, and a feeding tray for placing a whole green tile is supported on the sliding seat.

10. The green chip cracking machine according to claim 9, wherein the platform is provided with two groups of lifting columns respectively arranged near two sides of the same end part of the sliding rail and two groups of telescopic members arranged in one-to-one correspondence with the two groups of lifting columns, each group of lifting columns comprises two lifting columns for supporting the feeding tray, and each group of telescopic members comprises two telescopic members respectively arranged towards the sliding rail to be supported below the feeding tray;

the lifting column can lift the feeding trays to be upwards moved to be separated from the sliding seat, and the overhanging ends of the telescopic pieces are horizontally inserted between the two feeding trays at the lowest layer; the lifting column can also lower the lowest feeding tray and enable the lowest feeding tray to fall onto the sliding seat.