Remaining sample box lifting and weighing device and storing and taking device

Abstract

The utility model discloses a sample reserving box lifting and weighing device and a storing and taking device. The sample reserving box lifting and weighing device comprises a weighing support, a lifting frame, a pressure sensor, a lifting plate and a lifting driving assembly. The lifting frame and the weighing support form a sliding pair. The lifting plate is fixed to the lifting frame through a pressure sensor. The lifting driving assembly comprises a sliding support and a lifting guide pin. A lifting sliding groove is formed in the sliding support. And a lifting guide pin is fixed on the lifting frame. The lifting guide pin extends into the lifting sliding groove. The sample reserving boxes are lifted one by one through the lifting plate capable of detecting pressure, and full-automatic weighing of all the sample reserving boxes is achieved. In addition, lifting driving of the lifting plate in the vertical direction is achieved through a Z-shaped lifting sliding groove and a horizontally-arranged electric cylinder, by means of the space in the horizontal direction, the sensitive thickness size of the belt type conveying structure is reduced, and the situation that the weighing device influences the size of the storing and taking device is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of food sample retention equipment, and in particular relates to a sample box lifting and weighing device and a storage and retrieval device. Background Art

[0002] In food safety supervision, sample retention is an important part of ensuring food quality and tracking food safety issues. Especially in the field of catering services, such as school canteens, collective dining distribution units, central kitchens, etc., according to relevant operating specifications, samples of finished food products for each meal should be retained in case of emergency. The existing sample box storage and retrieval device does not have the function of weighing the sample boxes one by one, which is not conducive to the information recording of food sample retention. Summary of the invention

[0003] The purpose of the present invention is to provide a sample box storage and retrieval device for a sample cabinet.

[0004] In the first aspect, the present invention provides a sample box lifting and weighing device, which includes a weighing bracket, a lifting frame, a pressure sensor, a lifting plate and a lifting drive assembly. The lifting frame and the weighing bracket form a sliding pair. The lifting plate is fixed to the lifting frame through a pressure sensor. The lifting drive assembly includes a sliding bracket and a lifting guide pin. The sliding bracket is slidably connected to the weighing bracket. A lifting chute is provided on the sliding bracket. The lifting chute includes a lower horizontal section, an inclined section and an upper horizontal section connected in sequence. A lifting guide pin is fixed on the lifting frame. The lifting guide pin extends into the lifting chute. The sliding bracket is driven by a lifting power element. When the sliding bracket slides, the lifting guide pin is driven to move up and down through the lifting chute.

[0005] As a preference, it further comprises guide posts and reset springs; the bottom ends of the vertically arranged multiple guide posts are fixed to the top surface of the bottom plate of the weighing bracket. The lifting frame is slidably connected to each guide post through a guide sleeve; a reset spring is sleeved on the guide post; the top end of the reset spring abuts against the annular protrusion at the top end of the guide post; and the bottom end of the reset spring abuts against the top surface of the lifting frame.

[0006] Preferably, the sliding bracket comprises a connecting beam and two second side plates. The opposite sides of the two second side plates are fixed by the connecting beam. The two second side plates of the sliding bracket are both provided with a horizontal slide groove and a lifting slide groove.

[0007] Preferably, the lifting frame is arranged between the two second side plates of the sliding bracket. Lifting guide pins are fixed on both side surfaces of the lifting frame. The two lifting guide pins extend into the two lifting slide grooves respectively.

[0008] Preferably, the weighing bracket comprises a bottom plate and two first side plates; the two first side plates are respectively fixed to the two side edges of the top surface of the bottom plate. The sliding bracket is arranged between the two first side plates of the weighing bracket; the two sliding guide pins are respectively fixed to the inner sides of the two first side plates of the weighing bracket and extend into the horizontal slide grooves on the two second side plates of the sliding bracket.

[0009] Preferably, rollers are installed at the position where the sliding guide pin is connected to the horizontal slide groove and at the position where the lifting guide pin is connected to the lifting slide groove.

[0010] Preferably, the lifting power element is a lifting drive electric cylinder; the horizontally arranged lifting drive electric cylinder is fixed in the weighing bracket, and the piston rod and the sliding bracket are fixed by a connecting plate.

[0011] Preferably, a photoelectric sensor is fixed on the weighing bracket; a contact piece is fixed on the connecting plate; and the position of the contact piece matches that of the photoelectric sensor.

[0012] In a second aspect, the present invention provides a sample box storage and retrieval device, which includes a bearing support, a conveying mechanism and the aforementioned sample box lifting and weighing device. The weighing bracket is fixed on the bearing support. The conveying mechanism includes two belt conveyor assemblies and a conveying drive assembly. The two belt conveyor assemblies are arranged on the bearing support at intervals. The belt conveyor assembly includes a pulley and a conveyor belt. The two pulleys are respectively rotatably connected to the two ends of the bearing support and are connected through the conveyor belt transmission. The two belt conveyor assemblies are driven by the conveying drive assembly. The sample box weighing mechanism is arranged between the two belt conveyor assemblies.

[0013] Preferably, a groove structure is provided on the top surface of the bearing support. The conveying mechanism is installed in the groove structure. A cover plate is fixed on each of the groove structures. A conveying gap is left between the two side edges of the cover plate and the two side edges of the top of the groove structure. The two conveying gaps are respectively located directly above the two conveyor belts. Two supporting edges are provided at the bottom of the tray for placing the sample box. The two supporting edges match the two conveying gaps. The cover plate is provided with a clearance groove aligned with the lifting plate.

[0014] The present invention has the following beneficial effects:

[0015] 1. The present invention utilizes a lifting plate capable of detecting pressure to lift the sample boxes one by one, thereby realizing full-automatic weighing of all the sample boxes.

[0016] 2. The present invention utilizes a Z-shaped lifting chute and a horizontally arranged electric cylinder to realize the vertical lifting drive of the lifting plate. With the help of the horizontal space, the thickness dimension of the belt conveyor structure, which is more sensitive, is reduced, thereby avoiding the weighing device from affecting the size of the storage and retrieval device.

[0017] 3. The present invention uses two belt conveyor assemblies to respectively support and convey the two supporting edges of the pallet, and by leaving a conveying gap between the cover plate and the side of the groove structure, it is convenient for the user to accurately place the two conveying edges of the pallet on the two belt conveyor assemblies; at the same time, the conveying gap provides a limit for the pallet during the conveying process to ensure that the pallet can stably reach the specified position. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0019] Figure 2 is a schematic top view of embodiment 1 of the present invention;

[0020] Figure 3 This is a first cross-sectional schematic diagram of Embodiment 1 of the present invention;

[0021] Figure 4 This is a second cross-sectional schematic diagram of Embodiment 1 of the present invention;

[0022] Figure 5 is a schematic top view of embodiment 2 of the present invention;

[0023] Figure 6 It is a three-dimensional schematic diagram of embodiment 2 of the present invention;

[0024] Figure 7 Schematic diagram of the tray in Example 2 of the present invention.

[0025] Figure markings: 1. Weighing bracket; 1-1. Base plate; 1-2. First side plate; 1-3. Sliding guide pin; 2. Lifting frame; 2-1. Lifting guide pin; 3. Pressure sensor; 4. Lifting plate; 5. Guide column; 6. Reset spring; 7. Lifting drive cylinder; 8. Sliding bracket; 8-1. Connecting beam; 8-2. Second side plate; 8-3. Horizontal slide; 8-4. Lifting slide; 9. Connecting plate; 10. Photoelectric sensor; 11. Bearing support; 12. Conveying mechanism; 12-1. Belt conveyor assembly; 12-2. Driving shaft; 12-3. Conveying drive motor; 12-4. Synchronous wheel; 12-5. Synchronous belt; 13. Cover plate; 14. Conveying gap; 15. Pallet; 15-1. Support edge. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] Example 1

[0028] like Figure 1 and Figure 2As shown, a sample box lifting and weighing device includes a weighing bracket 1, a lifting frame 2, a pressure sensor 3, a lifting plate 4, a guide column 5, a reset spring 6 and a lifting drive assembly. The weighing bracket 1 includes a bottom plate 1-1 and two first side plates 1-2; the two first side plates 1-2 are respectively fixed to the two side edges of the top surface of the bottom plate 1-1.

[0029] The bottom ends of the vertically arranged multiple guide columns 5 are fixed to the top surface of the bottom plate 1-1 of the weighing bracket 1. The lifting frame 2 is slidably connected to each guide column 5 through a guide sleeve, so that the lifting frame 2 and the weighing bracket 1 form a sliding pair that slides in the vertical direction. A return spring 6 is sleeved on the guide column 5; the top end of the return spring 6 abuts against the annular protrusion at the top end of the guide column 5; the bottom end of the return spring 6 abuts against the top surface of the lifting frame 2.

[0030] The lifting plate 4 is fixed to the top surface of the lifting frame 2 through the pressure sensor 3 .

[0031] like Figure 1 , Figure 3 and Figure 4 As shown, the lifting drive assembly is used to drive the lifting movement, which includes a lifting drive electric cylinder 7, a sliding bracket 8, a sliding guide pin 1-3 and a lifting guide pin 2-1. The sliding bracket 8 is arranged between the two first side plates 1-2 of the weighing bracket 1; the sliding bracket 8 includes a connecting beam 8-1 and two second side plates 8-2. The opposite sides of the two second side plates 8-2 arranged at intervals are fixed by the connecting beam 8-1. The two second side plates 8-2 of the sliding bracket 8 are both provided with a horizontal slide 8-3 and a lifting slide 8-4. The length direction of the horizontal slide 8-3 is horizontally arranged. The lifting slide 8-4 includes a lower horizontal section, an inclined section and an upper horizontal section connected in sequence.

[0032] Two sliding guide pins 1-3 are respectively fixed on the inner sides of the two first side plates 1-2 of the weighing bracket 1, and extend from the outside to the inside into the horizontal slide grooves 8-3 on the two second side plates 8-2 of the sliding bracket 8, so that the sliding bracket 8 and the weighing bracket 1 form a sliding pair that slides in the horizontal direction. Rollers are installed at the position where the sliding guide pins 1-3 connect to the horizontal slide grooves 8-3 to reduce friction. The horizontally arranged lifting drive cylinder 7 is fixed in the weighing bracket 1, and the piston rod and the sliding bracket 8 are fixed by a connecting plate 9.

[0033] The lifting frame 2 is arranged between the two second side plates 8-2 of the sliding bracket 8. Lifting guide pins 2-1 are fixed on both side surfaces of the lifting frame 2. The two lifting guide pins 2-1 extend from the inside to the outside into the two lifting chute 8-4 respectively. The pushing out and retracting of the lifting drive electric cylinder 7 can mobilize the sliding bracket 8 to slide horizontally, thereby making the lifting guide pins 2-1 move between the lower horizontal section and the upper horizontal section of the lifting chute 8-4, driving the lifting frame 2 to rise and fall.

[0034] The lifting drive assembly has two working states, namely, a weighing state and a standby state. In the weighing state, the lifting guide pin 2-1 is in the upper horizontal section of the lifting chute 8-4, and the lifting frame 2 is in the upper limit position. In the standby state, the lifting guide pin 2-1 is in the lower horizontal section of the lifting chute 8-4, and the lifting frame 2 is in the lower limit position.

[0035] In some embodiments, a photoelectric sensor 10 is fixed on the bottom plate 1-1 of the weighing bracket 1; a contact piece is integrally formed on the connecting plate 9; and the position of the contact piece matches that of the photoelectric sensor 10. When the lifting drive assembly is in the weighing state, the contact piece is aligned with the photoelectric sensor 10, and the photoelectric sensor 10 is triggered; when the lifting drive assembly is in the standby state, the contact piece is staggered with the photoelectric sensor 10, and the photoelectric sensor 10 is triggered; thus, it is possible to determine whether the lifting plate 4 is lifted into place according to the change in the detection value of the photoelectric sensor 10, and then determine the detection timing of the pressure sensor 3.

[0036] The working principle of the utility model is as follows:

[0037] The weighed sample box is used in conjunction with the tray 15. The tray 15 is provided with a through slot for placing the sample box. The top of the side of the sample box is provided with a flanged step structure; the body of the sample box passes through the through slot on the tray 15, and the step structure on the sample box is supported on the top surface of the tray 15, so that the bottom of the sample box is suspended.

[0038] The tray 15 is driven by the external conveying mechanism 12 to move above the sample box lifting and weighing device, so that the sample box stays just above the lifting plate 4; at this time, the lifting drive electric cylinder 7 moves, so that the lifting plate 4 rises and supports the sample box, and all the weight of the sample box is borne by the lifting plate 4; the weight of the sample box is obtained by calculating the difference in pressure values ​​measured by the pressure sensor 3 before and after the lifting of the lifting plate 4. This weighing process can be completed when the tray 15 is sent into the sample cabinet.

[0039] Example 2

[0040] like Figure 5 and Figure 6 As shown, a sample box storage and retrieval device of a sample cabinet includes a bearing support 11, a conveying mechanism 12, and a sample box lifting and weighing device as described in the embodiment. The bearing support 11 is formed by bending a sheet metal. The weighing bracket 1 is fixed on the bearing support 11. A groove structure is provided on the top surface of the bearing support 11. The conveying mechanism 12 is installed in the groove structure. The conveying mechanism 12 can convey a tray 15.

[0041] The conveying mechanism 12 includes two belt conveyor assemblies 12-1 and a conveying drive assembly. The two belt conveyor assemblies 12-1 are respectively arranged on both sides of the groove structure. The belt conveyor assembly 12-1 includes a support frame, a pulley and a conveyor belt. The two support frames are respectively fixed to the inner and outer ends of the corresponding groove structure. The two pulleys are respectively rotatably connected to the two support frames, and are connected through the conveyor belt transmission, and can be tensioned and adjusted.

[0042] The conveying drive assembly includes a driving shaft 12-2, a conveying drive motor 12-3, a synchronous wheel 12-4 and a synchronous belt 12-5. A pair of coaxial pulleys in the two belt conveying assemblies 12-1 are respectively fixed to the two ends of the driving shaft 12-2. The two synchronous wheels 12-4 are respectively fixed to the output shaft of the conveying drive motor 12-3 and the driving shaft 12-2. The two synchronous wheels 12-4 are connected by a synchronous belt 12-5.

[0043] A cover plate 13 is fixed on the groove structure. Gaps are left between the two side edges of the cover plate 13 and the two side edges of the top of the groove structure, which serve as conveying gaps 14. The two conveying gaps 14 are respectively located directly above the two conveyor belts. Two supporting edges 15-1 are provided at the bottom of the tray 15. The two supporting edges 15-1 match the two conveying gaps 14. By inserting the two supporting edges 15-1 into the two conveying gaps 14, the tray 15 can be supported on the two conveyor belts. So that the conveyor belt tray 15 can enter or exit the sample cabinet. The conveying mechanism 12 and the cover plate 13 form a conveying channel. On the one hand, the cover plate 13 is used to make the external load-bearing component more beautiful, and on the other hand, the two conveying gaps 14 are formed to laterally limit the tray 15, thereby improving the stability of the tray 15 conveying.

[0044] The sample box weighing mechanism is arranged in the groove structure and is located between the two belt conveyor components 12-1. The cover plate 13 is provided with a clearance slot aligned with the lifting plate 4. When the lifting drive component is in the weighing state, the lifting plate 4 pushes upward through the clearance slot and pushes the upper sample box to rise, so that the sample box is supported on the lifting plate 4, and the weighing of a single sample box is realized.

[0045] When the lifting drive assembly is in the standby state, the lifting plate 4 is lowered to a state below the top surface of the cover plate 13 , and at this time, the lifting drive assembly does not affect the conveying function of the conveying mechanism 12 .

[0046] By moving the tray 15 through the conveying mechanism 12 , the four sample boxes on the tray 15 can be brought to the sample box weighing mechanism one by one for weighing.

[0047] The working principle of this embodiment is as follows:

[0048] When storing samples, Figure 7A sample box is placed on the tray 15 shown. The sample box contains food to be sampled. The two supporting edges 15-1 of the tray 15 are placed on the two conveying gaps 14. The conveying mechanism 12 drives the tray 15 to move into the sample cabinet. Whenever a sample box reaches the top of the sample box weighing mechanism, the conveying mechanism 12 stops conveying, and the sample box weighing mechanism supports the sample box through the lifting plate 4 to complete the weighing of the sample box. After the tray 15 enters the sample cabinet, the conveying mechanism 12 stops moving.

[0049] When sampling, the internal result of the sample cabinet moves the tray 15 to the inner end of the sample box storage and retrieval device, and the conveying mechanism 12 drives the tray 15 to continue to move outward until the tray 15 is completely out of the sample cabinet for the staff to take, and the sampling is completed.

[0050] The above-mentioned sample storage method and sampling method can be executed simultaneously.

Claims

1. A sample box lifting and weighing device, comprising a weighing bracket (1), a lifting frame (2), a pressure sensor (3), a lifting plate (4) and a lifting drive assembly; characterized in that: The lifting frame (2) and the weighing bracket (1) form a sliding pair; the lifting plate (4) is fixed to the lifting frame (2) through a pressure sensor (3); the lifting drive assembly includes a sliding bracket (8) and a lifting guide pin (2-1); the sliding bracket (8) is slidably connected to the weighing bracket (1); a lifting slide groove (8-4) is provided on the sliding bracket (8); the lifting slide groove (8-4) includes a lower horizontal section, an inclined section and an upper horizontal section connected in sequence; a lifting guide pin (2-1) is fixed to the lifting frame (2); the lifting guide pin (2-1) extends into the lifting slide groove (8-4); the sliding bracket (8) is driven by a lifting power element; when the sliding bracket (8) slides, the lifting guide pin (2-1) is driven to move up and down through the lifting slide groove (8-4).

2. A sample box lifting and weighing device according to claim 1, characterized in that: The device also includes a guide column (5) and a return spring (6); the bottom ends of the plurality of vertically arranged guide columns (5) are fixed to the top surface of the bottom plate (1-1) of the weighing bracket (1); the lifting frame (2) is slidably connected to each guide column (5) via a guide sleeve; a return spring (6) is sleeved on the guide column (5); the top end of the return spring (6) abuts against the annular protrusion at the top end of the guide column (5); and the bottom end of the return spring (6) abuts against the top surface of the lifting frame (2).

3. A sample box lifting and weighing device according to claim 1, characterized in that: The sliding bracket (8) comprises a connecting beam (8-1) and two second side plates (8-2); the opposite sides of the two second side plates (8-2) arranged at intervals are fixed by the connecting beam (8-1); and the two second side plates (8-2) of the sliding bracket (8) are both provided with a horizontal sliding groove (8-3) and a lifting sliding groove (8-4).

4. A sample box lifting and weighing device according to claim 3, characterized in that: The lifting frame (2) is arranged between the two second side plates (8-2) of the sliding bracket (8); lifting guide pins (2-1) are fixed on both side surfaces of the lifting frame (2); and the two lifting guide pins (2-1) extend into the two lifting slide grooves (8-4) respectively.

5. A sample box lifting and weighing device according to claim 4, characterized in that: The weighing bracket (1) comprises a bottom plate (1-1) and two first side plates (1-2); the two first side plates (1-2) are respectively fixed to the two side edges of the top surface of the bottom plate (1-1); the sliding bracket (8) is arranged between the two first side plates (1-2) of the weighing bracket (1); and the two sliding guide pins (1-3) are respectively fixed to the inner sides of the two first side plates (1-2) of the weighing bracket (1) and respectively extend into the horizontal sliding grooves (8-3) on the two second side plates (8-2) of the sliding bracket (8).

6. A sample box lifting and weighing device according to claim 5, characterized in that: Rollers are installed at the position where the sliding guide pin (1-3) is connected to the horizontal slide groove (8-3) and at the position where the lifting guide pin (2-1) is connected to the lifting slide groove (8-4).

7. The sample box lifting and weighing device according to claim 1, characterized in that: The lifting power element is a lifting drive electric cylinder (7); the horizontally arranged lifting drive electric cylinder (7) is fixed in the weighing bracket (1), and the piston rod and the sliding bracket (8) are fixed via a connecting plate (9).

8. The sample box lifting and weighing device according to claim 7, characterized in that: A photoelectric sensor (10) is fixed on the weighing bracket (1); a contact piece is fixed on the connecting plate (9); and the position of the contact piece matches that of the photoelectric sensor (10).

9. A sample box storage and retrieval device, comprising a bearing support (11) and a conveying mechanism (12); characterized in that: It also includes the sample box lifting and weighing device as described in claim 1; the weighing bracket (1) is fixed on the load-bearing support (11); the conveying mechanism (12) includes two belt conveying assemblies (12-1) and a conveying drive assembly; the two belt conveying assemblies (12-1) are arranged on the load-bearing support (11) at intervals; the belt conveying assembly (12-1) includes a pulley and a conveyor belt; the two pulleys are respectively rotatably connected to the two ends of the load-bearing support (11) and are connected through the conveyor belt transmission; the two belt conveying assemblies (12-1) are driven by the conveying drive assembly; the sample box lifting and weighing device is arranged between the two belt conveying assemblies (12-1).

10. A sample box storage and retrieval device according to claim 9, characterized in that: The top surface of the bearing support (11) is provided with a groove structure; the conveying mechanism (12) is installed in the groove structure; a cover plate (13) is fixed on the groove structure; conveying gaps (14) are left between the two side edges of the cover plate (13) and the two side edges of the top of the groove structure; the two conveying gaps (14) are respectively located directly above the two conveyor belts; the bottom of the tray (15) for placing the sample box is provided with two supporting edges (15-1); the two supporting edges (15-1) match the two conveying gaps (14); the cover plate (13) is provided with a clearance groove aligned with the lifting plate (4).

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