Sample reserving device for food inspection

Abstract

According to the sample reserving device for food inspection, the sample reserving box containing samples is limited through the limiting structure, the accuracy of the placement position is guaranteed, sliding in the labeling process is prevented, and the labeling effect is guaranteed; the direction of the negative pressure suction nozzle for adsorbing the label sticker is changed through the matching of the direction adjusting gear and the fixed transmission rack, and the label sticker is automatically pasted on the sample reserving box, so that the inconvenience of manual labeling is effectively avoided, the workload of workers is reduced, a large amount of time is saved, meanwhile, the situation that the label is damaged due to misoperation is also avoided, and the working efficiency is improved. Waste caused by re-printing labels is avoided, and the sample reserving efficiency of food is improved; the label can be better attached to the sample reserving box through sliding of the sliding connecting base, the attaching effect of the label is guaranteed, release paper is guided and tightly supported through the limiting guide shaft, meanwhile, the end of the label is warped, and the separation efficiency of the label and the release paper is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of food sample preservation, and particularly relates to a food inspection sample preservation device capable of automatically pasting a printed label sticker on a sample preservation box. BACKGROUND

[0002] To ensure food hygiene and safety, prevent food poisoning accidents, and promptly identify the causes of food poisoning accidents so as to take effective rescue measures, the state has successively promulgated relevant laws and regulations such as the Product Quality Law, the Food Hygiene Law and the Food Hygiene Standard, and has made clear provisions for the food sample preservation system. Therefore, when food is processed, a sample of no less than a specified amount needs to be randomly taken and stored in a sample preservation box, and then the food information is identified through a sample preservation instrument, the weight of the food is weighed, and a label sticker is printed. After the label sticker is pasted, the sample preservation box is placed in a sample preservation cabinet.

[0003] However, after the sample label sticker is printed, the staff needs to manually tear off the label and paste it on the sample preservation box, which not only causes a large workload of the staff, but also takes a long time, and the label is also easily damaged due to improper operation, which requires re-printing of the label, thereby affecting the sample preservation efficiency of the food. SUMMARY

[0004] Therefore, the application provides a sample preservation device for food inspection, and the specific scheme is as follows.

[0005] A sample preservation device for food inspection, a sample placement plate is arranged on the bottom of a sample preservation instrument, a limiting installation frame is fixedly connected to the rear side of the bottom of the sample preservation instrument, a label printer is installed on the upper part of the limiting installation frame, a limiting structure is arranged on the front side of the bottom of the sample preservation instrument, and a pasting and turning unit and a winding support unit are cooperatively arranged, the winding support unit is located below the output port of the label printer, and the pasting and turning unit is located between the winding support unit and the limiting structure.

[0006] The limiting mechanism can limit the sample preservation box on the sample placement plate to a working distance relative to the pasting and turning unit.

[0007] The pasting and turning unit comprises a sliding mounting seat, a connecting rotating shaft and a turnover seat.

[0008] The connecting rotating shaft is rotatably connected to the upper part of the two sliding mounting seats, the lower parts of the two sliding mounting seats are slidably connected to the guide grooves on the left and right sides of the bottom of the sample preservation instrument, and the turnover seat is fixedly connected to the middle part of the connecting rotating shaft and can rotate together with the connecting rotating shaft.

[0009] The mechanism for controlling the connection rotating shaft to drive the turnover seat and the negative pressure suction nozzle to turn around the connection rotating shaft while moving the connection rotating shaft by the synchronous sliding of the two sliding mounting seats is also included.

[0010] The winding support unit comprises a release paper winding shaft and a limiting guide shaft, which are parallel to each other and are rotatably connected to the support frames fixed on the limiting mounting frame at both ends, wherein the release paper winding shaft is driven to rotate by the second reciprocating self-locking driving member.

[0011] Further, the limiting structure comprises positioning mounting seats, a double-end screw rod, and a limiting guide rod. The two positioning mounting seats are respectively fixedly connected to the left and right sides of the sample reservation instrument base. The double-end screw rod is rotatably connected to the lower part of the two positioning mounting seats. The limiting guide rod is fixedly connected to the upper part of the two positioning mounting seats. The roots of the two sliding limiting rods are respectively threadedly connected to the left and right sides of the double-end screw rod and are slidably connected to the limiting guide rod. The inner side of each sliding limiting rod is further fixedly connected to a limiting blocking rod.

[0012] Further, a plurality of mounting holes for screwing and fixing the limiting blocking rods are formed on the sliding limiting rod, so as to select the installation position of the limiting blocking rod according to the size of the sample reservation box.

[0013] Further, the plurality of negative pressure suction nozzles are arranged in a row, and the extension direction of the row is parallel to the axis of the connection rotating shaft.

[0014] Further, each negative pressure suction nozzle is fixedly installed on a matched sliding connection seat. Each sliding connection seat is matched with a guide connection rod. The bottom end of the guide connection rod is fixedly connected to the turnover seat, and the top is slidably connected to the sliding connection seat. A second reset elastic member is clamped between the guide connection rod and the sliding connection seat to achieve elastic buffering and reset connection.

[0015] Further, the structure for controlling the lower parts of the two sliding mounting seats to synchronously slide along the guide grooves on the left and right sides of the sample reservation instrument base comprises: the lower part of each sliding mounting seat is threadedly connected to a position adjustment screw rod, and each position adjustment screw rod is rotatably connected to the left and right sides of the sample reservation instrument base. The position adjustment screw rod is driven to rotate by a matched first reciprocating self-locking driving member, and the first reciprocating self-locking driving member is fixedly connected to the sample reservation instrument base.

[0016] Further, the mechanism for controlling the connection rotating shaft to drive the turnover seat and the negative pressure suction nozzle to turn around the connection rotating shaft while moving the connection rotating shaft by the synchronous sliding of the two sliding mounting seats comprises: direction adjustment gears coaxial with the connection rotating shaft are fixedly arranged at the axial ends of the turnover seat to synchronously rotate, each direction adjustment gear is matched with a fixed transmission rack in engagement, and each fixed transmission rack is fixed to the sample reservation instrument base. The extension direction of the fixed transmission rack is parallel to the sliding direction of the sliding mounting seat.

[0017] Further, the interval between the release paper winding shaft and the limiting guide shaft is not greater than the maximum length of a single label sticker.

[0018] Further, the supporting frame on the limiting mounting frame is rotationally connected with a positioning transmission shaft on each side, and the positioning transmission shaft on the right side is coaxially fixedly connected with the motor shaft of the second reciprocating self-locking driving member; square connecting blocks are fixedly arranged at the axial two ends of the release paper winding shaft, square limiting connecting grooves are arranged on the inner sides of the two positioning transmission shafts, and the axial two ends of the release paper winding shaft are inserted into the corresponding square limiting connecting grooves to achieve coaxial connection with the corresponding positioning transmission shafts.

[0019] Further, a position limiting push plate is slidably arranged in each square limiting connecting groove, and a first reset elastic member is clamped between the position limiting push plate and the groove bottom; the axial two ends of the release paper winding shaft abut against the corresponding position limiting push plates and the corresponding first reset elastic members, so that the extension amount during disassembly and assembly of the positioning transmission shaft and the position returning after assembly are provided.

[0020] The sample box containing the sample is limited by the limiting structure, the accuracy of the placement position is ensured, sliding during label sticking is prevented, and the label sticking effect is ensured; the direction of the negative pressure suction nozzle for sucking the label sticker is adjusted by the cooperation of the direction adjusting gear and the fixed transmission rack, the label sticker is automatically stuck on the sample box, the inconvenience of manual label sticking is effectively avoided, the work burden of the staff is reduced, a large amount of time is saved, the situation that the label is damaged due to improper operation is avoided, the waste caused by re-printing of the label is avoided, the sample efficiency of the food is improved; the label is better combined with the sample box through the sliding of the sliding connecting seat, the label combination effect is ensured, the release paper is guided and tightened by the limiting guide shaft, and the end of the label is also raised, so that the separation efficiency of the label and the release paper is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings, which form a part of this application, are used to provide further understanding of the application, and the illustrative embodiments of the application and their description serve to explain the application. Without creative labor, other related drawings can be obtained by those skilled in the art according to these drawings.

[0022] Figure 1 It is a three-dimensional schematic view of the overall structure of the application;

[0023] Figure 2 It is a three-dimensional schematic view of the overall structure of the application from another perspective;

[0024] Figure 3 It is a connection relationship diagram of the sliding limiting rod and the double-head screw rod;

[0025] Figure 4 Structure diagram of connecting shaft;

[0026] Figure 5 Structure diagram of release paper winding shaft and limiting guide shaft;

[0027] Figure 6 Split structure diagram of positioning transmission shaft, position limiting push plate and square connecting block;

[0028] Figure 7 Connection relationship diagram of position adjusting lead screw and sliding mounting seat;

[0029] Figure 8 Split structure diagram of guide connecting rod and sliding connecting seat.

[0030] The reference signs in the drawings: 1, sample leaving instrument base; 101, positioning mounting seat; 102, double-end lead screw; 103, limiting guide rod; 104, sliding limiting rod; 105, limiting blocking rod; 106, position adjusting lead screw; 107, first reciprocating self-locking driving part; 108, fixed transmission rack; 2, sample placing plate; 3, limiting mounting frame; 301, second reciprocating self-locking driving part; 302, positioning transmission shaft; 303, limiting connecting square groove; 304, position limiting push plate; 305, first reset elastic part; 306, square connecting block; 307, release paper winding shaft; 308, limiting guide shaft; 4, sliding mounting seat; 5, connecting shaft; 501, direction adjusting gear; 6, overturning seat; 601, guide connecting rod; 602, second reset elastic part; 7, sliding connecting seat; 8, negative pressure suction nozzle. DETAILED DESCRIPTION

[0031] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0032] In the description of the embodiments of the present application, it should be noted that the indicated position or location relationship is based on the position or location relationship shown in the drawings, or the position or location relationship commonly used when the product of the application is used, or the position or location relationship commonly understood by those skilled in the art, only for the convenience of describing the present application or simplifying the description, and is not intended to indicate or imply that the indicated device or element must have a particular position, be constructed or operated in a particular position, and therefore should not be understood as a limitation of the present application.

[0033] The "multiple" in the present application refers to two or more (including two). The terms "first", "second", etc. are only used to distinguish the description, and should not be understood as indicating or implying relative importance.

[0034] Unless specifically stated and defined otherwise, the terms "set", "install", "connect" should be understood broadly, for example, can be fixedly connected, can also be detachably connected, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium.

[0035] The application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0036] As Figures 1 to 3 shown:

[0037] The sample placing plate 2 is arranged on the sample instrument base 1; the front side of the sample instrument base 1 is provided with a limiting structure, and the rear side of the sample instrument base 1 is fixedly connected with a limiting mounting frame 3, and the upper part of the limiting mounting frame 3 is provided with a display screen, a camera and a label printer.

[0038] The limiting structure comprises a positioning mounting seat 101, a double-head screw rod 102 and a limiting guide rod 103; the positioning mounting seat 101 is provided with two, and the two positioning mounting seats 101 are fixedly connected to the left and right sides of the sample instrument base 1; the double-head screw rod 102 is rotatably connected to the lower part of the two positioning mounting seats 101; and the limiting guide rod 103 is fixedly connected to the upper part of the two positioning mounting seats 101.

[0039] The limiting structure further comprises a sliding limiting rod 104 and a limiting blocking rod 105; the sliding limiting rod 104 is provided with two, and the roots of the two sliding limiting rods 104 are threadedly connected to the left and right sides of the double-head screw rod 102 through screw holes, and the roots of the two sliding limiting rods 104 are further slidably connected to the limiting guide rod 103 through sliding guide holes; and the limiting blocking rod 105 is provided with two, and the two limiting blocking rods 105 are fixedly connected to the inner sides of the corresponding sliding limiting rods 104.

[0040] The specific use mode and function of the limiting structure: when the sample is taken, the sample taking box is placed on the upper part of the sample placing plate 2, the double-head screw rod 102 is rotated to make the two sliding limiting rods 104 slide along the limiting guide rod 103, at this time, the sliding limiting rod 104 and the limiting blocking rod 105 limit the sample taking box, specifically, the two sliding limiting rods 104 are used to abut and limit the left and right sides of the sample taking box, and the limiting blocking rod 105 is used to abut and limit the front side of the sample taking box. In addition, the positioning mounting seat 101 can limit the maximum sliding distance of the sliding limiting rod 104 to the outside.

[0041] The rotation of the double-head screw rod 102 can be realized by manually rotating the coaxially fixed handle, or can be driven by connecting a speed reducer motor.

[0042] Further, a plurality of installation holes for screwing and fixing the limiting and blocking rod 105 can be formed on the sliding limiting rod 104, so that the installation position of the limiting and blocking rod 105 can be selected according to the size of the sample box, so that the position of the rear wall of the sample box can be just located at the action position of the labeling mechanism after the sample box is limited.

[0043] As shown in Figures 4 to 8 , the labeling mechanism comprises a mutual cooperation of a rotating and labeling unit and a winding and supporting unit, the winding and supporting unit is located below the output port of the label printer, and the rotating and labeling unit is located between the winding and supporting unit and the limiting structure.

[0044] As shown in Figure 7 and Figure 8 , the rotating and labeling unit comprises a sliding installation seat 4, a connecting rotating shaft 5, a turnover seat 6, a sliding connection seat 7, and a negative pressure suction nozzle 8.

[0045] The connecting rotating shaft 5 is rotationally connected at the upper part of the two sliding installation seats 4, and the lower parts of the two sliding installation seats 4 are respectively slidably connected with the guide grooves on the left and right sides of the sample instrument base 1. The turnover seat 6 is fixedly connected at the middle part of the connecting rotating shaft 5 and can rotate together with the connecting rotating shaft 5. A plurality of negative pressure suction nozzles 8 are connected on one side of the outer periphery of the turnover seat 6. Preferably, the plurality of negative pressure suction nozzles 8 are arranged in a row with intervals, and the extending direction of the row is parallel to the axis of the connecting rotating shaft 5.

[0046] Further, each negative pressure suction nozzle 8 is fixedly installed on a matched sliding connection seat 7, each sliding connection seat 7 is matched with a guide connecting rod 601, the bottom end of the guide connecting rod 601 is fixedly connected with the turnover seat 6, the top part is slidably sleeved with the sliding connection seat 7, and a second reset elastic member 602 is clamped between the guide connecting rod 601 and the sliding connection seat 7 to realize elastic buffering and reset connection. As shown in Figure 8 , the sliding connection seat 7 is provided with a guide sleeve part, and the top part of the guide connecting rod 601 is slidably embedded in the guide sleeve part of the sliding connection seat 7. Alternatively, the top part of the guide connecting rod 601 is provided with a guide sleeve part, and the bottom part of the sliding connection seat 7 is slidably embedded in the guide sleeve part of the guide connecting rod 601. In addition, in order to prevent the sliding connection seat 7 from being pulled out, a anti-pulling-out structure is further arranged between the sliding connection seat 7 and the guide connecting rod 601, which is a prior art and will not be described herein.

[0047] Furthermore, this paper mainly provides the corresponding mechanical structure basis, and the supporting structures such as the gas path structure for providing negative pressure to the negative pressure suction nozzle 8 and the circuit structure for providing control to each motor belong to the common sense known by those skilled in the art. Therefore, in order to clearly show the key mechanical structure, other structures are not shown in the figure, and will not be described herein.

[0048] As shown in Figure 7As shown in the drawings, the structure for controlling the lower part of the two sliding mounts 4 to slide synchronously along the guide grooves on the left and right sides of the sample leaving instrument base 1 respectively comprises: the lower part of each sliding mount 4 is screwed with a position adjusting lead screw 106 respectively, and each position adjusting lead screw 106 is rotatably connected to the left and right sides of the sample leaving instrument base 1 respectively; each position adjusting lead screw 106 is driven to rotate by a matched first reciprocating self-locking driving member 107, and the two first reciprocating self-locking driving members 107 are bolted to the left and right sides of the sample leaving instrument base 1 respectively; the first reciprocating self-locking driving member 107 is a reduction motor, and the motor shaft is coaxially fixedly connected with the corresponding position adjusting lead screw 106 through a coupling member.

[0049] As shown in the drawings, Figure 7 and Figure 8 As shown in the drawings, the mechanism for controlling the two sliding mounts 4 to slide synchronously to drive the connection shaft 5 to move while controlling the connection shaft 5 to drive the turnover seat 6 and the negative pressure suction nozzle 8 to turn around the connection shaft 5 comprises: the axial both ends of the turnover seat 6 are fixedly provided with direction adjusting gears 501 which are coaxial with the connection shaft 5 and synchronously rotate, each direction adjusting gear 501 is matched with a fixed transmission rack 108 which is engaged, and each fixed transmission rack 108 is fixed with the sample leaving instrument base 1 respectively, and the extension direction of the fixed transmission rack 108 is parallel to the sliding direction of the sliding mount 4.

[0050] As shown in the drawings, Figure 5 and Figure 6 As shown in the drawings, the winding support unit comprises: a release paper winding shaft 307 and a limiting guide shaft 308, both of which are parallel to each other and rotatably connected to the support frame fixed on the limiting mounting frame 3 at both ends, wherein the release paper winding shaft 307 is also coaxially connected with a second reciprocating self-locking driving member 301 to drive the rotation of the release paper winding shaft 307, and the second reciprocating self-locking driving member 301 is bolted to the right side of the limiting mounting frame 3.

[0051] The second reciprocating self-locking driving member 301 is a reduction motor.

[0052] Further, the interval between the release paper winding shaft 307 and the limiting guide shaft 308 is not greater than the maximum length of a single label sticker, so that the label sticker following the release paper traveling to the label sticker located between the two shafts is lifted off the release paper due to the curling of the release paper, so as to facilitate the negative pressure suction nozzle 8 to better adsorb and separate the label sticker from the release paper as a whole.

[0053] Further, in order to facilitate the disassembly and assembly of the release paper winding shaft 307, the supporting frame on the limiting mounting frame 3 is rotatably connected with a positioning transmission shaft 302 on both sides, and the right positioning transmission shaft 302 is coaxially fixedly connected with the motor shaft of the second reciprocating self-locking driving member 301; the square connecting block 306 is fixedly arranged at the axial both ends of the release paper winding shaft 307, the inner sides of the two positioning transmission shafts 302 are respectively provided with corresponding limiting connection square grooves 303, and the both ends of the release paper winding shaft 307 are respectively inserted into the corresponding limiting connection square grooves 303 through the square connecting block 306 to realize the coaxial connection with the corresponding positioning transmission shaft 302.

[0054] The position limiting push plate 304 is slidably arranged in each limiting connection square groove 303, and the first reset elastic member 305 is clamped between the position limiting push plate 304 and the groove bottom of the limiting connection square groove 303; the axial both ends of the release paper winding shaft 307 are abutted against the corresponding position limiting push plate 304 and the corresponding first reset elastic member 305, so that the extension and retraction allowance during disassembly and assembly of the positioning transmission shaft 302 and the position returning after assembly are provided.

[0055] Working principle of the present application:

[0056] The sample box containing the sample is placed on the upper part of the sample placing plate 2, the two sliding limiting rods 104 are made to slide along the limiting guide rod 103 through the rotating double-head screw rod 102, at this time, the sliding limiting rod 104 and the limiting blocking rod 105 limit the sample box, specifically, the two sliding limiting rods 104 are used for clamping and abutting the left and right sides of the limiting sample box, and the limiting blocking rod 105 is used for abutting the front side of the limiting sample box, so that the distance between the rear side wall of the sample box and the transfer and labeling unit of the labeling mechanism reaches and remains at the working distance;

[0057] The camera on the limiting mounting frame 3 scans the food sample, the label printer prints the label after identifying the food information, the second reciprocating self-locking driving member 301 of the winding support unit drives the release paper winding shaft 307 to rotate to wind the release paper, and the limiting guide shaft 308 guides and tightens the movement of the release paper, at this time, the printed label moves to the position close to and towards the transfer and labeling unit, the negative pressure suction nozzle 8 of the transfer and labeling unit moves backward while being flipped backward and abutting and adsorbing the label, and then moves forward while being flipped forward, so that the label paper is pasted and pressed on the sample box, and after pasting, the flipping seat 6 and the negative pressure suction nozzle reset to wait for the next action.

[0058] The movement and overturning of the overturning seat 6 and the negative pressure suction nozzle 8 thereof are driven by the first reciprocating self-locking driving member 107 to rotate the position adjusting lead screw 106, so that the sliding mounting seat 4 slides and drives the connecting rotating shaft 5 to move. When the connecting rotating shaft 5 moves, the overturning seat 6 and the direction adjusting gear 501 are driven to move. Since the direction adjusting gear 501 is in meshing relationship with the fixed transmission rack 108, the direction adjusting gear 501 drives the connecting rotating shaft 5 to rotate, so that the overturning seat is synchronously rotated to drive the negative pressure suction nozzle 8 to overturn and change direction. After the label is adsorbed or pressed against the sample box back wall, the sliding connecting seat 7 slides along the guide connecting rod 601 to compress the second reset elastic member 602, so that the label can be better adsorbed or pressed.

[0059] The above merely describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A sample retention device for food inspection, wherein a sample placement plate is disposed on a sample retention instrument base; a limiting mounting bracket (3) is fixedly connected to the rear side of the sample retention instrument base, and a label printer is mounted on the upper part of the limiting mounting bracket, characterized in that, The front side of the sample holder base is provided with a limiting structure, and also includes a transfer unit and a winding support unit that cooperate with each other. The winding support unit is located below the label printer output port, and the transfer unit is located between the winding support unit and the limiting structure. The limiting mechanism can limit the sample box on the sample placement plate to a distance of the rear side wall of the sample box relative to the transfer unit and maintain it at the working distance. The transfer unit includes a sliding mounting base (4), a connecting shaft (5), and a flipping base (6); The connecting shaft is rotatably connected to the upper part of the two sliding mounting seats, and the lower part of the two sliding mounting seats is slidably connected to the guide grooves on the left and right sides of the sample holder base, respectively; the flip seat is fixedly connected to the middle of the connecting shaft and can rotate together with the connecting shaft; multiple negative pressure suction nozzles (8) are connected to one side of the outer periphery of the flip seat. It also includes a mechanism that uses two sliding mounting seats to slide synchronously to drive the connecting shaft to move, while controlling the connecting shaft to drive the flipping seat and negative pressure suction nozzle to flip around the connecting shaft; The winding support unit includes a release paper winding shaft (307) and a limiting guide shaft (308), which are parallel to each other and are rotatably connected at both ends to a support frame fixed on the limiting mounting frame. The release paper winding shaft is driven to rotate by a second reciprocating self-locking drive.

2. The food sample retention device as described in claim 1, characterized in that, in, The limiting structure includes a positioning mounting base (101), a double-ended lead screw (102), and a limiting guide rod (103); the two positioning mounting bases are fixedly connected to the left and right sides of the sample holder base respectively; the double-ended lead screw is rotatably connected to the lower part of the two positioning mounting bases; the limiting guide rod is fixedly connected to the upper part of the two positioning mounting bases; the root of the two sliding limiting rods (104) is threadedly connected to the left and right sides of the double-ended lead screw and slidably connected to the limiting guide rod respectively; a limiting stop rod is also fixedly connected to the inner side of each sliding limiting rod.

3. The food sample retention device as described in claim 2, characterized in that, The sliding limit rod has multiple mounting holes for screwing and fixing the limit stop rod, so that the installation position of the limit stop rod can be selected according to the size of the sample box.

4. The food sample retention device as described in claim 1, characterized in that, Multiple negative pressure suction nozzles are arranged in a row, and the direction of this row is parallel to the axis of the connecting shaft.

5. A sample retention device for food inspection as described in claim 1, characterized in that, Each negative pressure nozzle is fixedly installed on a matching sliding connecting seat (7). Each sliding connecting seat is matched with a guide connecting rod (601). The bottom end of the guide connecting rod is fixedly connected to the flip seat, and the top end is slidably connected to the sliding connecting seat. A second reset elastic element (602) is sandwiched between the guide connecting rod and the sliding connecting seat to achieve elastic buffering and reset connection.

6. The food sample retention device as described in claim 1, characterized in that, The structure for controlling the lower parts of the two sliding mounting seats to slide synchronously along the guide grooves on the left and right sides of the sample holder base includes: the lower part of each sliding mounting seat is screwed to a position adjustment screw (106), and each position adjustment screw is rotatably connected to the left and right sides of the sample holder base; the position adjustment screw is driven to rotate by a matching first reciprocating self-locking drive (107), and the first reciprocating self-locking drive is fixedly connected to the sample holder base.

7. A sample retention device for food inspection as described in claim 1, characterized in that, The mechanism that uses two sliding mounting seats to slide synchronously to drive the connecting shaft to move while controlling the connecting shaft to drive the flipping seat and negative pressure suction nozzle to flip around the connecting shaft includes: the two ends of the flipping seat are respectively fixed with direction adjustment gears (501) that rotate synchronously with the connecting shaft on the same axis, each direction adjustment gear is matched with a meshing fixed transmission rack (108), each fixed transmission rack is fixed to the sample holder base, and the extension direction of the fixed transmission rack is parallel to the sliding direction of the sliding mounting seat.

8. A sample retention device for food inspection as described in claim 1, characterized in that, The gap between the release paper take-up shaft and the limiting guide shaft shall not exceed the maximum length of a single label sticker.

9. A sample retention device for food inspection as described in claim 1, characterized in that, The support frame on the limiting mounting bracket is rotatably connected to each side of the positioning drive shaft (302). The positioning drive shaft on the right side is coaxially fixedly connected to the motor shaft of the second reciprocating self-locking drive component. Square connecting blocks (306) are fixedly provided at both ends of the release paper take-up shaft. The inner sides of the two positioning drive shafts are respectively provided with corresponding limiting connection square grooves (303). The two ends of the release paper take-up shaft are respectively connected to the corresponding positioning drive shaft by inserting the square connecting blocks into the corresponding limiting connection square grooves.

10. A sample retention device for food inspection as described in claim 9, characterized in that, Each limiting connection square groove is provided with a position limiting push plate (304) slidingly, and a first reset elastic element (305) is clamped between the position limiting push plate and the bottom of the limiting connection square groove; the two ends of the release paper take-up shaft abut against the corresponding position limiting push plate and the matching first reset elastic element, thereby providing the extension and retraction allowance when disassembling and assembling with the positioning transmission shaft and the position centering reset after assembly.

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