Clamping device and method for food detection

Abstract

The invention relates to a clamping device and method for food detection, the clamping device comprises a workbench, the workbench is provided with two clamping units which move face to face or oppositely under the action of a moving driving unit, each clamping unit comprises a clamping base, the outer side of each clamping base is provided with a mounting plate, each mounting plate is provided with a clamping claw, and each clamping claw is provided with a movable driving unit. The clamping claw comprises two clamping arms which are oppositely arranged, and a compression spring is arranged between the two clamping arms, so that the device can be suitable for food samples of different sizes through the arrangement of the clamping unit, the movable driving unit and the food detection unit, and the applicability and the flexibility of the device are improved; the arrangement of the clamping claw, the clamping driving motor and the driving plate ensures the stability and accuracy of the clamping action, and improves the reliability of the detection process.

Description

Technical Field

[0001] The invention belongs to the technical field of food detection, and in particular relates to a clamping device and method for food detection. Background Art

[0002] Food testing clamping devices are an important part of the field of food safety testing technology. They are mainly used to fix and manipulate food samples for various tests. The design of such devices usually takes into account the convenience of operation and the protection of food samples.

[0003] Since the shapes and sizes of each food are inconsistent and irregular, most of the food clamping devices currently on the market cannot meet the requirements of clamping and fixing various foods, making the food inspection process difficult. In addition, the degree of automation is low and cannot meet the actual inspection needs. Summary of the invention

[0004] (I) Purpose of the invention

[0005] In order to overcome the above shortcomings, the purpose of the present invention is to provide a clamping device and method for food detection to solve the above technical problems.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the technical solutions provided by this application are as follows:

[0008] A clamping device for food inspection, including a workbench, on which are arranged two clamping units that move toward or oppositely under the action of a mobile driving unit, the clamping units comprising a clamping base, a mounting plate being arranged on the outer side of the clamping base, a clamping claw being arranged on the mounting plate, the clamping claw comprising two clamping arms arranged oppositely, a compression spring being arranged between the two clamping arms, the rear ends of the clamping arms being penetrated through the driving holes of a driving plate, the driving plate being slidably arranged on the clamping base under the action of the clamping drive, and the relative or opposite rotation between the two clamping arms being realized as the driving plate slides, a food inspection unit is arranged at the center of the workbench, and a waste pushing unit is arranged at the rear end of the workbench.

[0009] Preferably, the clamping claw comprises a claw mounting seat, and two clamping arms are rotatably provided on the claw mounting seat, and the clamping arms comprise a clamping plate and a connecting plate.

[0010] Preferably, the smaller angle between the clamping plate and the connecting plate is 120°-150°, a buffer plate is provided on the inner side of the clamping plate, the buffer plate is provided with serrations, a compression spring is provided between the two connecting plates, and the two connecting plates move in the driving hole.

[0011] Preferably, the clamping base includes a sliding groove and a clamping drive motor placement groove, a drive plate screw seat is provided at the bottom of the drive plate, the drive plate screw seat is threadedly connected to a drive plate screw, the drive plate screw is rotatably set in the sliding groove, one end of the drive plate screw is connected to the clamping drive motor, and the clamping drive motor is installed in the clamping drive motor placement groove.

[0012] Preferably, the mobile drive unit includes a bidirectional screw rod, on which two mobile screw rod seats are symmetrically arranged, and the two mobile screw rod seats pass through the mobile groove on the workbench and are connected to the clamping base of the clamping unit. The bidirectional screw rod is rotatably set on the workbench, and the end of the bidirectional screw rod is connected to the mobile drive motor.

[0013] Preferably, the end of the driving hole on the driving plate close to the mounting plate is smaller than the end away from the mounting plate, and the inner wall of the driving hole abutting against the connecting plate is inclined.

[0014] Preferably, the food detection unit comprises a driving cylinder arranged on a support frame, the telescopic end of the driving cylinder is connected to a detection plate, the detection plate is arranged just above the midpoint of the two clamping units, and a hollow sampling tube and a liquid sampling tube are arranged on the detection plate.

[0015] Preferably, the hollow sampling tube is connected to the negative pressure unit, and an inclined sampling port is provided below the hollow sampling tube.

[0016] Preferably, the waste pushing unit is installed at the center point of the two clamping units, and the waste pushing unit includes a pushing plate and a pushing cylinder connected to the pushing plate. The bottom of the pushing plate is set on the table surface of the workbench, the pushing surface of the pushing plate is arc-shaped, and the top of the pushing plate is narrower than the bottom.

[0017] A clamping method of a clamping device for food detection, comprising the following steps:

[0018] S1: Start the mobile driving unit to drive the clamping unit to a suitable position to accommodate food samples of different lengths;

[0019] S2: The clamping unit is ready. The driving plate moves to one end close to the mounting plate, so that the two clamping arms are naturally separated.

[0020] S3: placing the food sample between two clamping claws;

[0021] S4: Execute the clamping action, the driving plate moves inward under the action of the clamping driving motor, and the clamping arms continuously gather inward to achieve stable clamping of the food sample;

[0022] S5: Food testing preparation, the driving cylinder drives the testing plate to rise and fall to the appropriate position, ready for sampling;

[0023] S6: Food sampling is performed. The hollow sampling tube and the liquid sampling tube are inserted into the food sample as the detection plate descends. The hollow sampling tube absorbs the food sample using the negative pressure unit, and the liquid sampling tube absorbs the liquid of the food sample;

[0024] S7: Waste treatment: after the test is completed, the clamping unit releases the food sample and drops it onto the workbench, and the waste pushing unit pushes the discarded food sample to the treatment area of ​​the workbench to keep the working area clean;

[0025] S8: The clamping unit is reset. After the sampling is completed, the reverse operation is performed to reset the clamping unit and prepare for the next detection cycle.

[0026] Beneficial effects:

[0027] The present invention can be applied to food samples of different sizes by setting the clamping unit, the mobile drive unit and the food detection unit, thereby improving the applicability and flexibility of the present invention. The setting of the clamping claw, the clamping drive motor and the drive plate ensures the smoothness and accuracy of the clamping action, thereby improving the reliability of the detection process. At the same time, the design of the waste pushing unit effectively prevents the food samples from sticking, simplifies the waste disposal process, and keeps the working area clean. In the entire detection process, everything from clamping, sampling to waste disposal is automatically completed by the motor and the cylinder, which reduces manual participation and improves the degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the present invention;

[0029] Figure 2 is a structural diagram of a clamping claw according to an embodiment of the present invention;

[0030] Figure 3 is a structural diagram of a mounting plate according to an embodiment of the present invention;

[0031] Figure 4 is a cross-sectional view of a driving plate according to an embodiment of the present invention;

[0032] Figure 5 is a cross-sectional view of a driving plate according to Embodiment 2 of the present invention;

[0033] Figure 6 It is a side structural diagram according to an embodiment of the present invention. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clear, the following is a detailed description of the present invention in conjunction with the specific implementation methods and with reference to the attached drawings. Figure 1-6, the present invention is further described in detail. It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concept of the present invention.

[0035] The present invention provides a clamping device for food detection, comprising a workbench 15, on which two clamping units are arranged to move toward or oppositely under the action of a mobile drive unit, and the mobile drive unit comprises a bidirectional screw 11, on which two mobile screw seats 9 are symmetrically arranged, and the two mobile screw seats 9 pass through a mobile groove on the workbench 15 and are connected to a clamping base 10 of the clamping unit, and the bidirectional screw 11 is rotatably arranged on the workbench 15, and the end of the bidirectional screw 11 is connected to a mobile drive motor 14. The bidirectional screw is driven by the mobile drive motor, so that the two mobile screw seats move toward or oppositely in the mobile groove on the workbench, thereby driving the clamping unit to perform corresponding opening and closing actions, allowing the clamping unit to be accurately positioned at the food sample, thereby improving the accuracy and repeatability of clamping, and being applicable to food samples of different sizes, thereby improving applicability.

[0036] The clamping unit includes a clamping base 10, a mounting plate 6 is provided on the outer top of the clamping base 10, a clamping claw 5 is provided on the mounting plate 6, the clamping claw includes a claw mounting seat 19, two clamping arms are rotatably provided on the claw mounting seat 19, the clamping arm includes a clamping plate 22 and a connecting plate 23 connected at the ends, the smaller angle between the clamping plate 22 and the connecting plate 23 is 120°-150°, providing a suitable clamping force, a buffer plate 21 is provided on the inner side of the clamping plate 22 to prevent the food sample from being damaged, the buffer plate 21 is provided with saw teeth to prevent the food sample from falling off and realize soft and stable clamping, the end of the connecting plate 23 is rotatably mounted on the claw mounting seat 19, a compression spring 20 is provided between the two connecting plates 23, when not subject to external force, the two clamping arms are in a separated state under the action of the compression spring, so as to facilitate the insertion of the food sample. The two connecting plates 23 move in the driving hole.

[0037] The clamping base 10 includes a sliding groove 16 and a clamping drive motor placement groove 8, and the space arrangement is reasonable, saving space. A driving plate screw seat 13 is provided at the bottom of the driving plate 17, and the driving plate screw seat 13 is screwed with a driving plate screw, and the driving plate screw is rotatably arranged in the sliding groove, and one end of the driving plate screw is connected to the clamping drive motor 7, and the clamping drive motor 7 is installed in the clamping drive motor placement groove 8. The clamping drive motor 7 drives the driving plate screw to rotate, thereby driving the driving plate 17 connected to the driving plate screw seat 13 to move, so that the driving hole 29 is slidably sleeved on the driving arm, thereby realizing the relative or opposite rotation of the clamping arm. Through the arrangement of the driving plate 17 and the clamping drive, the clamping action is more stable and accurate, and the driving force of the motor can be effectively transmitted to the clamping arm, thereby improving the reliability of the clamping.

[0038] The driving plate is slidably set on the clamping base under the action of the clamping drive, and the relative or opposite rotation between the two clamping arms is realized as the driving plate slides. The clamping claw includes two clamping arms arranged opposite to each other, and a compression spring 20 is provided between the two clamping arms. The rear end of the clamping arm passes through a driving hole 29 arranged on the driving plate 17. The driving hole 29 includes an end of the driving hole 29 on the driving plate 17 that is closer to the mounting plate than an end that is away from the mounting plate. The inner wall of the driving hole 29 that abuts against the connecting plate 23 is inclined. The inclined design of the driving hole provides a clear movement path for the clamping arm, reduces friction and deviation during the clamping process, and improves the clamping accuracy. Under the action of the compression spring, the two clamping arms open outwards. When the driving hole on the driving plate passes through, because the driving hole is smaller than the size of the two clamping arms when open without external force, the two clamping arms continuously gather inwards when the driving hole passes through, thereby achieving the clamping effect on the food sample. When the clamping is completed, the reverse operation can be performed to achieve release, which is convenient and fast, with a high degree of automation and does not require excessive manual participation.

[0039] A food detection unit is provided at the center of the workbench 15. The food detection unit includes a driving cylinder 1 provided on a support frame 2. The telescopic end of the driving cylinder 1 is connected to a detection plate 4. The detection plate 4 is provided just above the midpoint of the two clamping units to facilitate sampling of food samples. A hollow sampling tube 18 and a liquid sampling tube 3 are provided on the detection plate 4. The hollow sampling tube 18 is connected to a negative pressure unit. An inclined sampling port is provided below the hollow sampling tube 18. The driving cylinder 1 in the food detection unit controls the lifting and lowering of the detection plate 4, which is suitable for food samples of different sizes. The hollow sampling tube 18 is sampled through the negative pressure unit to prevent the sample from falling. The sampling port is inclined to facilitate the collection of samples. The design of the food detection unit makes the sampling process more efficient and hygienic, and reduces the contamination and loss of samples.

[0040] A waste pushing unit is provided at the rear end of the workbench. The waste pushing unit is installed at the center point of the two clamping units. The waste pushing unit includes a pushing plate 12 and a pushing cylinder 32 connected to the pushing plate 12. The pushing surface of the pushing plate 12 is arc-shaped. The top of the pushing plate is narrower than the bottom, which can effectively prevent the food sample from sticking. The bottom of the pushing plate 12 is set on the table surface of the workbench 15. The pushing plate is driven to move under the action of the pushing cylinder, and the waste after detection is pushed to the rear end of the workbench for processing, which simplifies the waste processing process and improves the automation degree and cleaning efficiency of the detection process.

[0041] The clamping device for food testing of the present invention realizes an efficient and automated food sample testing process through a series of delicate operating steps. First, the mobile drive motor 14 is started to drive the bidirectional screw 11, so that the two movable screw seats 9 move toward or oppositely in the moving groove of the workbench 15, and accurately position the clamping unit to the food sample. Subsequently, the food sample is placed between the clamping claws 5 that are naturally separated due to the action of the compression spring 20. The clamping drive motor 7 is started, and the drive plate screw 13 drives the drive plate 17 to move along the sliding groove 16, and the inclined design of the drive hole 29 is used to realize the inward gathering of the clamping arm, so as to complete the stable clamping of the food sample. In the food testing unit, the driving cylinder 1 controls the detection plate 4 to rise and fall to the appropriate position, and the hollow sampling tube 18 is efficiently sampled through the negative pressure unit. After the detection is completed, the pushing cylinder 32 of the waste pushing unit drives the pushing plate 12 to push the waste to the rear end of the workbench 15 for processing. Finally, the clamping drive motor 7 operates in reverse to open the clamping arm to release the sample, and resets the clamping unit by moving the drive motor 14 to prepare for the next detection cycle. The entire process is highly automated and easy to operate, which not only improves the detection efficiency, but also ensures the accuracy and hygiene of the detection process.

[0042] Example 2

[0043] The difference from Example 1 is that a rotating plate 30 is embedded on the inner wall where the driving hole and the connecting plate abut against each other. The rotating plate 30 is semicircular, and one arc-shaped end of the rotating plate 30 is slidably set in the arc-shaped sliding groove of the inner wall. The rotating plate 30 always rotates around the center of the rotating plate 20, and the rotation angle of the rotating plate 30 does not exceed 15° up and down with the inner wall as the starting point. When the driving plate slides, the clamping arm rotates under the action of the driving hole, and the rotating plate always contacts with the connecting plate of the clamping arm and keeps the same direction. When the clamping arm rotates, the rotating plate also rotates accordingly, which can better realize the control of the expansion and contraction of the clamping claw.

[0044] Example 3

[0045] The difference from Example 1 and Example 2 is that the clamping claw 5 can be rotated 90° and is arranged on the mounting plate 6, the mounting plate 6 is provided with a mounting groove 27, the clamping claw 5 includes a claw mounting seat 19, the claw mounting seat 19 is provided with a mounting rod 24 assembled in the mounting groove 27, a tightening spring 25 is provided between the mounting rod 24 and the inner wall of the mounting groove 27, a cross-shaped limiting groove 28 is provided at the position where the mounting groove 27 is provided on the mounting plate 6, and the claw mounting seat 19 is provided with a straight-line limiting plate 26 corresponding to the cross-shaped limiting groove. The design of the clamping claw 5 allows it to rotate 90° on the mounting plate 6 to meet the clamping requirements in different directions. The operator first manually adjusts the clamping claw to a suitable angle according to the specific requirements of the food sample. At the same time, replace the appropriate drive plate, and then use the cross-shaped limiting groove 28 on the mounting plate 6 and the straight-line limiting plate 26 on the claw mounting seat 19 to cooperate with each other to ensure that the clamping claw is stably fixed in the adjusted position to prevent displacement during the detection process. The tightening spring ensures that the mounting rod is always in the mounting groove, which improves the applicability and flexibility of the clamping unit and can meet the clamping requirements of food samples of different shapes and sizes.

[0046] A clamping method of a clamping device for food detection, comprising the following steps:

[0047] S1: Start the mobile driving unit to drive the clamping unit to a suitable position to accommodate food samples of different lengths;

[0048] S2: The clamping unit is ready. The driving plate moves to one end close to the mounting plate, so that the two clamping arms are naturally separated.

[0049] S3: placing the food sample between two clamping claws;

[0050] S4: Execute the clamping action, the driving plate moves inward under the action of the clamping driving motor, and the clamping arms continuously gather inward to achieve stable clamping of the food sample;

[0051] S5: Food testing preparation, the driving cylinder drives the testing plate to rise and fall to the appropriate position, ready for sampling;

[0052] S6: Food sampling is performed. The hollow sampling tube and the liquid sampling tube are inserted into the food sample as the detection plate descends. The hollow sampling tube absorbs the food sample using the negative pressure unit, and the liquid sampling tube absorbs the liquid of the food sample;

[0053] S7: Waste treatment: after the test is completed, the clamping unit releases the food sample and drops it onto the workbench, and the waste pushing unit pushes the discarded food sample to the treatment area of ​​the workbench to keep the working area clean;

[0054] S8: The clamping unit is reset. After the sampling is completed, the reverse operation is performed to reset the clamping unit and prepare for the next detection cycle.

[0055] The present invention can be applied to food samples of different sizes by setting the clamping unit, the mobile drive unit and the food detection unit, thereby improving the applicability and flexibility of the present invention. The setting of the clamping claw, the clamping drive motor and the drive plate ensures the smoothness and accuracy of the clamping action, thereby improving the reliability of the detection process. At the same time, the design of the waste pushing unit effectively prevents the food samples from sticking, simplifies the waste disposal process, and keeps the working area clean. In the entire detection process, everything from clamping, sampling to waste disposal is automatically completed by the motor and the cylinder, which reduces manual participation and improves the degree of automation.

[0056] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0057] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A clamping device for food testing, characterized in that: It includes a workbench, on which are arranged two clamping units which move toward or oppositely under the action of a mobile driving unit, the clamping unit including a clamping base, a mounting plate being arranged on the outer side of the clamping base, a clamping claw being arranged on the mounting plate, the clamping claw including two clamping arms which are arranged oppositely, a compression spring being arranged between the two clamping arms, the rear ends of the clamping arms being passed through a driving hole of a driving plate, the driving plate being slidably arranged on the clamping base under the action of a clamping drive, and the relative or opposite rotation between the two clamping arms being realized as the driving plate slides, a food detection unit is arranged at the center of the workbench, and a waste pushing unit is arranged at the rear end of the workbench.

2. A food testing clamping device according to claim 1, characterized in that: The clamping claw comprises a claw mounting seat, on which two clamping arms are rotatably provided, and the clamping arms comprise a clamping plate and a connecting plate.

3. A food testing clamping device according to claim 2, characterized in that: The smaller angle between the clamping plate and the connecting plate is 120°-150°, a buffer plate is provided on the inner side of the clamping plate, and saw teeth are provided on the buffer plate. A compression spring is provided between the two connecting plates, and the two connecting plates move in the driving hole.

4. A food testing clamping device according to claim 2, characterized in that: The clamping base includes a sliding groove and a clamping drive motor placement groove. A drive plate screw seat is provided at the bottom of the drive plate. The drive plate screw seat is screwed to a drive plate screw. The drive plate screw is rotatably arranged in the sliding groove. One end of the drive plate screw is connected to the clamping drive motor. The clamping drive motor is installed in the clamping drive motor placement groove.

5. A food testing clamping device according to claim 1, characterized in that: The mobile drive unit includes a bidirectional screw rod, on which two mobile screw rod seats are symmetrically arranged. The two mobile screw rod seats pass through the mobile groove on the workbench and are connected to the clamping base of the clamping unit. The bidirectional screw rod is rotatably arranged on the workbench, and the end of the bidirectional screw rod is connected to the mobile drive motor.

6. A food testing clamping device according to claim 1, characterized in that: The end of the driving hole on the driving plate close to the mounting plate is smaller than the end away from the mounting plate, and the inner wall of the driving hole abutting against the connecting plate is inclined.

7. A food testing clamping device according to claim 1, characterized in that: The food detection unit includes a driving cylinder arranged on a support frame, the telescopic end of the driving cylinder is connected to a detection plate, the detection plate is arranged just above the midpoint of the two clamping units, and a hollow sampling tube and a liquid sampling tube are provided on the detection plate.

8. A food testing clamping device according to claim 8, characterized in that: The hollow sampling tube is connected to the negative pressure unit, and an inclined sampling port is provided below the hollow sampling tube.

9. A food testing clamping device according to claim 1, characterized in that: The waste pushing unit is installed at the center point of the two clamping units. The waste pushing unit includes a pushing plate and a pushing cylinder connected to the pushing plate. The bottom of the pushing plate is set on the table surface of the workbench. The pushing surface of the pushing plate is arc-shaped, and the top of the pushing plate is narrower than the bottom.

10. A clamping method based on the clamping device for food testing according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Start the mobile driving unit to drive the clamping unit to a suitable position to accommodate food samples of different lengths; S2: The clamping unit is ready. The driving plate moves to one end close to the mounting plate, so that the two clamping arms are naturally separated. S3: placing the food sample between two clamping claws; S4: Execute the clamping action, the driving plate moves inward under the action of the clamping driving motor, and the clamping arms continuously gather inward to achieve stable clamping of the food sample; S5: Food testing preparation, the driving cylinder drives the testing plate to rise and fall to the appropriate position, ready for sampling; S6: Food sampling is performed. The hollow sampling tube and the liquid sampling tube are inserted into the food sample as the detection plate descends. The hollow sampling tube absorbs the food sample using the negative pressure unit, and the liquid sampling tube absorbs the liquid of the food sample; S7: Waste treatment: after the test is completed, the clamping unit releases the food sample and drops it onto the workbench, and the waste pushing unit pushes the discarded food sample to the treatment area of ​​the workbench to keep the working area clean; S8: The clamping unit is reset. After the sampling is completed, the reverse operation is performed to reset the clamping unit and prepare for the next detection cycle.

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