A multifunctional silo

Abstract

The application provides a multifunctional bin, belonging to the technical field of machinery. It solves the problem that the existing workpiece bin can only be used for manual feeding. The multifunctional bin comprises a bin body, the front side of the bin body is provided with a recessed working position, support portions for supporting trays are arranged on the upper part of the bin body and located on the two sides of the working position, the upper side of the support portion on one side of the working position is provided with a protruding side limiting portion, the upper side of the front part or the upper side of the rear part of at least one support portion is provided with a protruding end limiting portion, and the multifunctional bin further comprises a correction structure for pushing the tray on the support portion to move towards the side limiting portion and the end limiting portion. The multifunctional bin has the advantage of high automation degree.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of machinery, and relates to a multifunctional stock bin. BACKGROUND

[0002] With the continuous development of science and technology, automatic processing and automatic production are inevitable trends, and on this basis, in order to meet the processing needs of automatic machine tools and other equipment, the corresponding stock devices, feeding devices and discharging devices are constantly updated.

[0003] For example, a superimposed stock bin intelligent integrated lathe is designed, and a Chinese patent is applied for, with the application number being 201910717623.3 and the publication number being CN110355384A. The superimposed stock bin intelligent integrated lathe comprises a base, an outer shell, a main shaft structure, a processing tool mounting portion, a control system, a hydraulic device, a main shaft motor, a cooling device and a gas tank. The outer shell is fixedly installed above the base, and the control system is installed at the middle position of the outer shell. The hydraulic device and the main shaft motor are fixedly installed inside the outer shell on the left side of the base. The main shaft motor is connected to the main shaft structure through a belt transmission. The processing tool mounting portion is installed on the right side of the main shaft structure on the base. The cooling device is installed below the processing tool mounting portion. The gas tank is fixedly installed at the rear of the base. The workpiece bin is fixedly installed on the right side of the base. The mechanical grab transverse movement device is fixedly connected and installed above the workpiece bin and the base. The mechanical grab is slidably installed on the mechanical grab transverse movement device. The control system is electrically connected with the moving parts in the processing tool mounting portion, the mechanical grab transverse movement device, the mechanical grab, the workpiece bin, the hydraulic device, the main shaft motor, the cooling device and the gas tank. The superimposed stock bin intelligent integrated lathe realizes the automatic feeding and processing of the entire processing lathe by centrally controlling each component through the control system.

[0004] However, when the workpiece bin of the superimposed stock bin intelligent integrated lathe is replenished, the feeding accuracy of the intelligent feeding trolley is not high, so the workpiece tray on which the workpieces to be processed are placed can only be neatly and accurately stacked on the bracket of the workpiece bin by manual operation to ensure the accuracy of the workpiece position on the tray, and then the workpiece bin and the mechanical grab transverse movement device are used for automatic feeding so that the mechanical grab can grab the workpieces according to the accurate coordinates. The degree of automation is low, and it is difficult to meet the current use requirements of higher and higher automation. SUMMARY

[0005] The present application is aimed at the above-mentioned problems existing in the prior art, and proposes a multifunctional stock bin to solve the problem that the existing workpiece bin can only be manually fed.

[0006] The purpose of the present application can be achieved by the following technical solutions:

[0007] The utility model provides a multifunctional bin, including bin body, its characterized in be that the front side of bin body has recessed work position, and the upper portion of bin body is arranged with the support part for supporting tray on both sides of work position respectively and parallelly, and the upper side of support part on the side of work position has protruding side limiting part, and the upper side of front portion or rear portion of at least one support part has protruding end limiting part, and the multifunctional bin further includes correction structure for pushing tray on support part to approach the direction of side limiting part and end limiting part.

[0008] When the multifunctional bin is used with the intelligent feeding trolley, the intelligent feeding trolley holds the bottom of the tray with the workpiece placed thereon and approaches the bin body until the intelligent feeding trolley partially or entirely enters the recessed work position in the front side of the bin body, the lifting part of the intelligent feeding trolley is lowered into the recessed work position, the tray is placed down, the bottom of the tray on both sides is respectively abutted against the support part on both sides of the work position, and the support of the tray is realized. At this time, there may be an error between the position of the tray and the accurate position. Then, the correction structure acts on the tray and pushes the tray to approach the direction of the side limiting part and the end limiting part protruding upward on the upper side of the support part until the side of the tray is abutted against the side limiting part and the end of the tray is abutted against the end limiting part. The existing tray for placing the workpiece is generally in the shape of a rectangular plate, the position in two directions of the tray is accurately limited, and the accurate positioning of the tray is realized. After the positioning of the tray, the workpiece on the tray can be accurately grabbed by the feeding structure such as a mechanical hand according to the coordinates. Similarly, when not used with the intelligent feeding trolley, the tray can also be placed on the support part by manual work in the work position, and the tray is pushed to abut against the side limiting part and the end limiting part, and the positioning of the tray is also realized.

[0009] The multifunctional bin is provided with the recessed work position for the trolley to enter, and the position of the tray placed on the support part of the bin body is automatically corrected by the use of the correction structure in cooperation with the side limiting part and the end limiting part. Even when used with the intelligent feeding trolley with low feeding accuracy, the requirement of the feeding accuracy of the tray can also be met, so as to ensure the feasibility of the automatic feeding and improve the degree of automation. In addition, the work position of the multifunctional bin can also be used for manual feeding, the recessed work position also reduces the obstruction to the feeding of the tray, facilitates the feeding, and meets the use requirements of the two feeding modes of manual feeding and automatic feeding, and has a wide range of applications.

[0010] In the multifunctional hopper, at least three rotatable universal rollers are arranged on the two support parts, and the top positions of the universal rollers are higher than the top positions of the support parts. When the tray is placed on the support part, the bottom surface of the tray abuts against the universal rollers, and the tray is supported by the at least three universal rollers. When the tray is moved by the correction structure, the tray moves more smoothly, the accuracy of the tray after the position adjustment by the correction structure is higher, the feasibility of the automatic feeding is ensured, and the automation degree is improved.

[0011] In the multifunctional hopper, the side limiting parts and the end limiting parts each include a plurality of guide wheels which are horizontally rotatably connected to the upper sides of the support parts. The guide wheels of the side limiting parts are linearly and spacedly arranged along the front-rear direction, and the guide wheels of the end limiting parts are linearly and spacedly arranged along the horizontal direction perpendicular to the front-rear direction. The guide wheels of the side limiting parts and the end limiting parts are linearly and spacedly arranged, so that the tray can move smoothly in the other direction relative to the side limiting part or the end limiting part, regardless of whether the tray abuts against the side limiting part or the end limiting part first. The linear arrangement of the guide wheels can support the tray at multiple points, ensure the accuracy of the positioning of the tray, ensure the feasibility of the automatic feeding, and improve the automation degree.

[0012] In the multifunctional hopper, the correction structure includes an end corrector connected to the hopper body and a side corrector connected to the support part. The output end of the end corrector has a block-shaped correction block, and the end corrector can push the correction block to move forward and backward. The output end of the side corrector has a protruding positioning roller, and the side corrector can push the positioning roller to move in the horizontal direction perpendicular to the front-rear direction. When the correction structure works, the side corrector first pushes the positioning roller to move to abut against the side of the tray, and pushes the other side of the tray to abut against the side limiting part. The positions of the sides of the tray are limited by the positioning rollers and the side limiting parts on the two sides of the tray. The end corrector pushes the tray to move forward and backward, and the positions of the ends of the tray are limited by the correction blocks and the end limiting parts on the two sides of the tray. During the movement, the positioning roller and the guide wheel are horizontally rotatable to realize the forward and backward movement of the tray after the left and right positioning of the tray, ensure the smoothness and accuracy of the position adjustment of the tray, ensure the feasibility of the automatic feeding, and improve the automation degree.

[0013] In the multifunctional hopper, the side corrector further comprises a side driving member, a positioning bracket fixed to an output end of the side driving member, and a positioning swing seat, a middle portion of the positioning swing seat is hinged to the positioning bracket, the positioning swing seat is provided with two positioning rollers which are respectively connected to two ends of the positioning swing seat in a horizontal rotating manner, the two positioning rollers protrude from the side of the positioning swing seat towards the outside of the side of the working position, the positioning bracket is provided with protruding top blocks corresponding to the two ends of the positioning swing seat, and the two end sides of the positioning swing seat can respectively abut against the two top blocks when the positioning swing seat swings around the hinge point. The positioning swing seat can swing, so that the positions between the two positioning rollers can be changed to adapt to the abutting requirements of the trays at different angles, so that the abutting and pushing are more stable, the two positioning rollers can provide two-point support, the pushing process is more stable, the precision after pushing is higher, and the feasibility of automatic feeding is ensured and the automation degree is improved. The two top blocks are arranged, the swing angle of the positioning swing seat can be limited on the basis that the positioning swing seat can swing, the swing angle is prevented from being too large to change the pushing direction, and the efficiency of position correction is improved.

[0014] As another case, in the multifunctional hopper, the correction structure comprises a correction driving member, a guide groove one arranged in the front-rear direction, a guide block one arranged in the guide groove one and partially protruding from the guide groove one, an elastic member one, a guide groove two arranged perpendicular to the guide groove one, a guide block two arranged in the guide groove two and partially protruding from the guide groove two, and an elastic member two, one end of the elastic member one and the elastic member two is connected with the output end of the correction driving member, the other end of the elastic member one is fixed to the guide block one, the other end of the elastic member two is fixed to the guide block two, and the output end of the correction driving member can drive the guide block one and the guide block two to move linearly along the guide groove one and the guide groove two respectively when the output end of the correction driving member is retracted. The elastic member one and the elastic member two can be springs or elastic pull ropes, and the side position and the end position are corrected through the driving of one correction driving member and the guidance of the guide groove one and the guide groove two.

[0015] In the multifunctional hopper, the upper side of the hopper body is fixed with a guide rail arranged in the front-rear direction, the support part is arranged on the upper side of the guide rail and can move back and forth along the guide rail, and the support parts on the two sides of the working position are fixed by a fixed plate. Through the movement of the support part, the working position and the grabbing position of the mechanical hand can be staggered, more workpieces can be placed on the tray at one time, and the feeding efficiency is improved.

[0016] In the multifunctional hopper, the support part is further fixed with a micro switch at the position of the end limiting part. The tray is first limited in the side direction and then limited in the end direction, and whether the tray is in place is detected by the micro switch, so that subsequent automatic work is facilitated.

[0017] In the multifunctional hopper, the hopper body is further connected with an inspection driving member, and the output end of the inspection driving member is connected with an inspection box for carrying workpieces. When manual inspection of the workpieces is needed, the workpieces can be grabbed by the manipulator in the grabbing area and placed in the inspection box, and then the inspection box is driven by the inspection driving member to move to the front end, so as to facilitate manual inspection.

[0018] In the multifunctional hopper, the middle part of the tray towards one side of the side corrector has a recessed correction groove, and the positioning roller of the side corrector can extend into the correction groove and abut against the bottom surface of the correction groove.

[0019] In the multifunctional hopper, the top of the hopper body is further fixed with a top-open protective cover, and the protective cover is arranged on the rear part of the upper side of the hopper body. The protective cover can be a grabbing area for the manipulator to grab the workpieces, so as to avoid external influence on the workpieces in the protective cover. The front side of the protective cover is a feeding area for manual or intelligent feeding trolley feeding.

[0020] In the multifunctional hopper, the front side of the hopper body has two above-mentioned working positions, and each of the two working positions is provided with the above-mentioned supporting part, side limiting part, end limiting part and correction structure. Among the two working positions, one can be used for the manipulator to grab the workpieces in time, so as to facilitate processing, and the other working position can be used for feeding or discharging at the same time, so that the work is not interrupted.

[0021] Compared with the prior art, the multifunctional hopper can automatically correct the position of the tray placed on the supporting part of the hopper body through the correction structure cooperating with the side limiting part and the end limiting part. Even if it is used in cooperation with an intelligent feeding trolley with low feeding accuracy, the feeding accuracy of the tray can also be met, so as to ensure the feasibility of automatic feeding and improve the degree of automation. In addition, the working position of the multifunctional hopper can also be used for manual feeding. The recessed working position also reduces the obstruction to the feeding of the tray, facilitates the feeding, and meets the use requirements of manual and automatic feeding, so the application range is wide. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic view of the first embodiment of the multifunctional hopper.

[0023] Figure 2 is a structural schematic view of the first embodiment of the multifunctional hopper without the protective cover and a tray.

[0024] Figure 3 is a partial enlarged view of the supporting part in the first embodiment of the multifunctional hopper.

[0025] Figure 4 is a structural schematic view of the side corrector in the first embodiment of the multifunctional hopper.

[0026] Figure 5This is a schematic diagram of the pallet structure in Embodiment 1 of this multifunctional silo.

[0027] Figure 6 This is a schematic diagram of the structure of this multifunctional silo after loading, according to Embodiment 1.

[0028] Figure 7 This is a schematic diagram of the structure after the support part of the first embodiment of the multifunctional silo has been moved backward.

[0029] In the diagram, 1. Chamber body; 2. Working position; 3. Pallet; 31. Calibration groove; 4. Support part; 5. Side limiting part; 6. End limiting part; 7. Calibration structure; 71. End calibrator; 711. Calibration block; 72. Side calibrator; 721. Positioning roller; 722. Side drive component; 723. Positioning bracket; 724. Positioning swing seat; 725. Top block; 8. Universal roller; 9. Guide rail; 10. Fixing plate; 11. Micro switch; 12. Sampling drive component; 13. Sampling box; 14. Workpiece; 15. Protective cover; 16. Support drive component. Detailed Implementation

[0030] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0031] Example 1

[0032] like Figure 1 As shown, this multi-functional silo includes a frame-type silo body 1 with a top for placing a pallet 3. A square protective cover 15, open at both the top and bottom, is fixed to the top of the silo body 1. This protective cover 15 covers the rear part of the upper side of the silo body 1, exposing the front part of the silo body 1. A sampling port is provided on the front side of the protective cover 15, and a sampling structure is provided at the sampling port. In this embodiment, the sampling structure includes a sampling drive 12 connected to the silo body 1 and a sampling box 13 for carrying workpieces 14 connected to the output end of the top of the sampling drive 12. The sampling drive 12 is a rodless cylinder.

[0033] like Figure 2 As shown, the front side of the chamber 1 has two recessed working positions 2. The structures of the two recessed working positions 2 are the same. The following description will take the structure of one of the working positions 2 as an example.

[0034] The two linear guides 9 are arranged in the front-rear direction, and the upper sides of the two guides 9 are provided with long-plate-shaped support portions 4. The two support portions 4 are arranged side by side and have the same length as the guides 9, and are fixedly connected by a plate-shaped fixing plate 10. The upper side of the bin body 1 is also fixed with a support driving member 16 capable of driving the support portions 4 to move back and forth along the guides 9. In this embodiment, the support driving member 16 is a rodless cylinder, the top of which is connected with two stop blocks, and the support portions 4 are fixed with a driving plate which extends outward and is limited between the two stop blocks. The support driving member 16 drives the driving plate and the support portions 4 to move through the stop blocks.

[0035] The upper side of the front part of the support portion 4 on one side of the working position 2 is provided with a protruding side limiting portion 5, and the upper side of the front part of the support portion 4 on the other side of the working position 2 is provided with a protruding end limiting portion 6. Of course, the end limiting portion 6 can also be arranged on the upper side of the rear part of the support portion 4 according to needs. Figure 3 As shown in the figure, the side limiting portion 5 and the end limiting portion 6 each include a plurality of guide wheels which are horizontally rotatably connected to the upper side of the support portion 4. The guide wheels of the side limiting portion 5 are arranged in a straight line in the front-rear direction, and the guide wheels of the end limiting portion 6 are arranged in a straight line in a horizontal direction perpendicular to the front-rear direction on the two support portions 4. In this way, the distribution directions of the side limiting portion 5 and the end limiting portion 6 form two perpendicular abutting surfaces. In this embodiment, the two support portions 4 each have a plurality of concave semispherical recesses, and a rotatable universal roller 8 is arranged in each recess, and the top of each universal roller 8 is higher than the top surface of the support portion 4.

[0036] The multifunctional bin also includes a correction structure 7 for pushing the tray 3 placed on the support portion 4 to approach the side limiting portion 5 and the end limiting portion 6.

[0037] Specifically, the correction structure 7 includes an end corrector 71 fixed to the rear part of the bin body 1 and a side corrector 72 connected to the support portion 4, wherein the output end of the end corrector 71 has a block-shaped correction block 711, and the end corrector 71 can drive the correction block 711 to move forward and backward. In this embodiment, the end corrector 71 includes two clamping cylinders arranged side by side, and the correction block 711 is a long strip and is fixed vertically to the outer end of the piston rod of the clamping cylinder. When the piston rod of the clamping cylinder is in the retracted state, the correction block 711 is located on the upper side of the piston rod and can abut against the tray 3. When the piston rod of the clamping cylinder is pushed out, it drives the correction block 711 to move backward while making the correction block 711 swing in the horizontal direction, so that the position of the correction block 711 is lower than that of the tray 3 to avoid interference with the forward and backward movement of the tray 3.

[0038] As shown in the figure, the side corrector 72 includes a plurality of clamping cylinders arranged in a straight line in the front-rear direction on the support portion 4, and the outer end of the piston rod of each clamping cylinder is connected with a side correction block 721. When the piston rod of the clamping cylinder is in the retracted state, the side correction block 721 is located on the upper side of the piston rod and can abut against the tray 3. When the piston rod of the clamping cylinder is pushed out, it drives the side correction block 721 to move backward while making the side correction block 721 swing in the horizontal direction, so that the position of the side correction block 721 is lower than that of the tray 3 to avoid interference with the forward and backward movement of the tray 3. Figure 4As shown, the side corrector 72 comprises a side driving member 722 fixed on the support part 4, a positioning bracket 723 fixed on the output end of the side driving member 722, a positioning swing seat 724, and two positioning rollers 721. The positioning swing seat 724 is U-shaped and is buckled downward on the positioning bracket 723, the middle part of the positioning swing seat 724 is hinged on the positioning bracket 723, the two positioning rollers 721 are horizontally rotatably connected on the two ends of the positioning swing seat 724, the two positioning rollers 721 protrude from the side of the positioning swing seat 724 towards the outside of the working position 2, the positioning bracket 723 has protruding top blocks 725 corresponding to the positions of the two ends of the positioning swing seat 724, and the two end sides of the positioning swing seat 724 can abut against the two top blocks 725 when the positioning swing seat 724 swings around the hinge point. In this embodiment, the side driving member 722 is a pneumatic cylinder, and the top blocks 725 are threadedly connected on the positioning bracket 723.

[0039] As shown in Figure 5 The tray 3 comprises a bottom disc in the shape of a rectangular plate and two sub-discs connected on the upper side of the bottom disc, the upper side of the two sub-discs is used for placing the workpiece 14, the middle part of the two sides of the bottom disc has recessed correction grooves 31 corresponding to the positions of the side correctors 72, and the positioning rollers 721 of the side correctors 72 can extend into the correction grooves 31 and abut against the bottom surface of the correction grooves 31. The lower side of the rear end of the bottom disc also has two protruding push blocks corresponding to the positions of the end correctors 71, which can abut against the correction blocks 711 for pushing. The four corners of the bottom disc all have inclined limiting surfaces for abutting against the end limiting parts 6.

[0040] In order to realize the automation of the feeding of the multifunctional hopper, a micro switch 11 is also fixed on the end limiting part 6 on the upper side of the front end of the support part 4, and when the bottom disc abuts against the end limiting part 6, the sub-disc can press the micro switch 11. An infrared sensor or a photoelectric sensor is also arranged on the structure for sampling, which can detect whether there is a workpiece 14 on the sampling box 13.

[0041] When the multifunctional hopper is used with the intelligent feeding trolley, an existing AGV carrying trolley can be selected.

[0042] As shown in Figure 6 When the multifunctional hopper is used, the intelligent feeding trolley holds the tray 3 with the workpiece 14 from the bottom to the top and moves towards the direction of the hopper body 1 until the intelligent feeding trolley is partially or entirely in the recessed working position 2 on the front side of the hopper body 1, the lifting part of the intelligent feeding trolley is slightly higher than the position of the support part 4, the lifting part of the intelligent feeding trolley is lowered into the recessed working position 2, the tray 3 is placed down, and the two side bottoms of the tray 3 abut against the support parts 4 on the two sides of the working position 2, thereby realizing the support of the tray 3.

[0043] Afterwards, the positioning rollers 721 of the side correctors 72 extend into and abut against the correction grooves 31 of the tray 3, and the tray 3 continues to be pushed to move until the side portions of the tray 3 abut against the side limiting portions 5. The end corrector 71 works, the piston rod retracts, and the correction block 711 is flipped up and moved forward to abut against the push block at the lower side of the rear end of the tray 3 and push the tray 3 to move outward until the front end of the tray 3 abuts against the end limiting portion 6 at the front end of the support portion 4 to be positioned. During the movement of the tray 3, the positioning rollers 721 at the two sides of the tray 3 and the side limiting portions 5 rotate horizontally, which greatly reduces the friction and makes the forward movement of the tray 3 more smooth. After the tray 3 is moved to the position, the tray 3 presses the micro switch 11 at the front end of the support portion 4, and the control system can perform the next operation. At this time, the rear tray on the tray 3 is located in the protective cover 15 and can be grabbed by the mechanical hand, and the front tray on the tray 3 is located at the front side of the protective cover 15.

[0044] As shown in Figure 7 When the workpieces 14 in the protective cover 15 are all machined, the support driving member 16 drives the support portion 4 to move backward along the guide rail 9, so that the tray on which the machined workpieces 14 are located moves backward out of the protective cover 15, and the tray originally located at the front side of the protective cover 15 moves into the protective cover 15 to grab the workpieces 14 by the mechanical hand.

[0045] Embodiment Two

[0046] The technical scheme of the embodiment is basically the same as that of the first embodiment, and the difference lies in that the correction structure 7 comprises a correction driving member, a guide groove one arranged in the front-rear direction, a guide block one arranged in the guide groove one and partially extending upward out of the guide groove one, an elastic member one, a guide groove two arranged perpendicularly to the guide groove one, a guide block two arranged in the guide groove two and partially extending upward out of the guide groove two, and an elastic member two, one end of each of the elastic member one and the elastic member two is connected with the output end of the correction driving member, the other end of the elastic member one is fixedly connected with the guide block one, and the other end of the elastic member two is fixedly connected with the guide block two, and the output end of the correction driving member retracts to drive the guide block one and the guide block two to move linearly along the guide groove one and the guide groove two respectively. Here, the correction driving member can be a pneumatic cylinder, and through the work of a single pneumatic cylinder, the guide block one and the guide block two can be simultaneously pulled to move through the elastic member one and the elastic member two respectively, and then the side position and the end position of the tray 3 can be adjusted simultaneously. The elastic member one and the elastic member two can be springs or elastic ropes, and the elastic member can be adapted to stretch and contract according to the different positions of the tray 3 to ensure that the guide block one and the guide block two can act on the tray 3 simultaneously.

[0047] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, without departing from the spirit of the present application or exceeding the scope defined by the appended claims.

Claims

1. A multi-functional silo, comprising a silo body (1), characterized in that, The silo body (1) has a recessed working position (2) on the front side. The upper part of the silo body (1) is provided with support parts (4) for supporting the pallet (3) on both sides of the working position (2). The upper side of the support part (4) on one side of the working position (2) has a protruding side limiting part (5). At least one of the support parts (4) has a protruding end limiting part (6) on the upper front or upper rear side. The multi-functional silo also includes a correction structure (7) for pushing the pallet (3) on the support part (4) toward the side limiting part (5) and the end limiting part (6). The correction structure (7) includes an end corrector (71) connected to the silo body (1) and a side corrector (72) connected to the support part (4). The output end of the end corrector (71) has a block-shaped correction block (711) and the end corrector (71) can push the correction block (711) to move back and forth. The output end of the side corrector (72) has a protruding positioning roller. 721), and the side corrector (72) can push the positioning roller (721) to move in a horizontal direction perpendicular to the front and rear direction. The side corrector (72) also includes a side drive (722), a positioning bracket (723) fixed to the output end of the side drive (722), and a positioning swing seat (724). The middle part of the positioning swing seat (724) is hinged to the positioning bracket (723). There are two positioning rollers (721), each of which can rotate horizontally. The two positioning rollers (721) are dynamically connected to the two ends of the positioning base (724). The outer side of the two positioning rollers (721) facing the working position (2) protrudes from the side of the positioning base (724). The positioning bracket (723) has a protruding top block (725) at the position corresponding to the two ends of the positioning base (724). When the positioning base (724) swings around the hinge point, the two ends of the positioning base (724) can abut against the two top blocks (725) respectively.

2. The multifunctional silo according to claim 1, characterized in that, At least three rotatable casters (8) are also provided on the two support parts (4), and the top of several casters (8) is higher than the top surface of the support part (4).

3. The multifunctional silo according to claim 1 or 2, characterized in that, Both the side limiting part (5) and the end limiting part (6) include several guide wheels that are horizontally rotatably connected to the upper side of the support part (4). The guide wheels of the side limiting part (5) are distributed in a straight line at intervals along the front-back direction, and the guide wheels of the end limiting part (6) are distributed in a straight line at intervals along the horizontal direction that is perpendicular to the front-back direction.

4. The multifunctional silo according to claim 1 or 2, characterized in that, The upper side of the chamber (1) is fixed with a guide rail (9) arranged in the front-back direction. The support part (4) is arranged on the upper side of the guide rail (9) and the support part (4) can move back and forth along the guide rail (9). The support parts (4) on both sides of the working position (2) are fixedly connected by a fixing plate (10).

5. The multifunctional silo according to claim 1 or 2, characterized in that, The chamber (1) is also connected to a sampling drive (12), and the output end of the sampling drive (12) is connected to a sampling box (13) for carrying the workpiece (14).

6. The multifunctional silo according to claim 1, characterized in that, The tray (3) has a recessed correction groove (31) on the side facing the side corrector (72) in the middle, and the positioning roller (721) of the side corrector (72) can extend into the correction groove (31) and abut against the bottom surface of the correction groove (31).

7. The multifunctional silo according to claim 1 or 2, characterized in that, The front side of the chamber (1) has two working positions (2) as described above, and each of the two working positions (2) is provided with the support (4), side limiting part (5), end limiting part (6) and correction structure (7).

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