CN111458189A - Food detection sampling device - Google Patents
Food detection sampling device Download PDFInfo
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- CN111458189A CN111458189A CN202010297368.4A CN202010297368A CN111458189A CN 111458189 A CN111458189 A CN 111458189A CN 202010297368 A CN202010297368 A CN 202010297368A CN 111458189 A CN111458189 A CN 111458189A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N2001/1006—Dispersed solids
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Abstract
The invention provides a food detection sampling device, which comprises a cone forming downward-pressing switching mechanism and a cross-shaped material distribution plate, wherein the cone forming downward-pressing switching mechanism is connected with the cross-shaped material distribution plate, solid powder is deposited on a bearing plate at a preset height h in a layer-by-layer overlapping mode to form a cone, then the cone is pressed downward to press the cone into a circular table, the cross-shaped material distribution plate is switched to the position right above the circular table, the cross-shaped intersection position of the cross-shaped material distribution plate is positioned on the central shaft of the circular table, and finally the cross-shaped material distribution plate is controlled to move downward to divide the circular table into four equal parts. The invention can realize the automatic operation of the quartering method in the food detection solid sampling, and can avoid the occurrence of a large amount of dust flying in the automatic operation process of the device.
Description
Technical Field
The invention belongs to the field of food detection, and particularly relates to a food detection sampling device.
Background
Food testing typically involves two major steps, sample collection and sample testing. When a solid sample is collected, in order to enable the sample to have uniformity and representativeness, all parts of the sample need to be collected, wherein a large sample needs to be cut into small blocks or crushed, sieved and crushed, material loss and splashing can not occur during sieving, the whole sample is sieved, and then the original sample is fully and uniformly mixed, and then the sample is divided by adopting a quartering method until the required sample amount is generally 0.5-1.0 kg.
The quartering method comprises the following operation steps: the method comprises the steps of fully mixing samples, stacking the samples into a cone, pressing downwards from the top of the cone to enable the samples to be pressed to be within 3cm thick, uniformly dividing the sample into four parts according to a cross shape from the center of the top of the sample, uniformly mixing the two parts of the samples at opposite angles, and taking the samples as analysis samples if the amount of the samples reaches the required amount. If the amount of the sample is still larger than the required amount, the division is continued according to the method until the required amount of the sample is obtained. At present, the quartering method still needs manual operation, and a sampling device based on the quartering method does not exist in the solid powder food sampling process.
Disclosure of Invention
The invention provides a food detection sampling device, which aims to solve the problem that a sampling device based on a quartering method does not exist in the current solid powder food sampling process.
According to a first aspect of the embodiments of the present invention, a food detection sampling device is provided, which includes a cone forming downward-pressing switching mechanism and a cross-shaped material distribution plate, wherein the cone forming downward-pressing switching mechanism is connected to the cross-shaped material distribution plate, and is configured to deposit solid powder on a bearing plate at a preset height h in a layer-by-layer overlapping manner to form a cone, press down the cone to press the cone into a circular truncated cone, switch the cross-shaped material distribution plate to a position right above the circular truncated cone, locate a cross intersection of the cross-shaped material distribution plate on a central axis of the circular truncated cone, and finally control the cross-shaped material distribution plate to move downward to divide the circular truncated cone into four equal parts.
In an optional implementation manner, the cone forming and pushing switching mechanism comprises a discharging device, a circular hole disc, a discharging adjusting device, an aperture adjusting device and a telescopic mechanism capable of stretching up and down, wherein the discharging device is used for containing powder of solid food to be detected, the circular hole disc is provided with N circular holes with different diameters, N is an integer greater than 2, the circumferential side wall of the circular hole disc is fixedly connected with one end of a support of the cross-shaped material distribution plate, and in an initial state, the discharging circular hole of the discharging device is abutted against a non-circular hole area of the circular hole disc so as to store the powder in an area enclosed by the discharging device and the circular hole disc; the controller is connected with ejection of compact adjusting device, aperture adjusting device and telescopic machanism respectively, controls this ejection of compact adjusting device, aperture adjusting device and telescopic machanism according to following step to pile up into the cone with the powder according to successive layer superimposed mode:
step S101, controlling the aperture adjusting device to sequentially adjust the central axis of a corresponding round hole in the front N-1 round holes on the round hole disc to be coincident with a first vertical axis according to the diameter, wherein for the ith round hole in the front N-1 round holes, i is an integer larger than 0 and smaller than N, and step S102 is executed after the central axis of the ith round hole is coincident with the first vertical axis;
step S102, controlling the discharging adjusting device to synchronously drive the ith round hole and the first vertical shaft to move, adjusting a first distance between the circle center of the discharging round hole and the first vertical shaft so that the first distance is equal to a set radius (R0+ R), and partially overlapping the discharging round hole with the ith round hole, wherein R0 represents the closest distance between the discharging round hole and the first vertical shaft when the discharging round hole rotates around the first vertical shaft, R0 is a non-zero value, R represents the radius of the discharging round hole, and step S103 is executed;
s103, controlling the discharging adjusting device to drive the discharging circular hole to rotate around a first vertical shaft by taking the set radius as the radius, controlling the telescopic mechanism to drive the discharging device and the circular hole disc to move upwards for a corresponding second distance until powder in the discharging device is deposited downwards to form an ith circular table, judging whether i is equal to N-1 or not after the ith circular table is formed, if i is not equal to N-1, i + +, returning to the step S101, and if i is equal to N-1, indicating that the corresponding number of circular tables are formed, wherein the corresponding number of circular tables are part of a cone from bottom to top in sequence, wherein the 1 st circular table is formed on the bearing plate, and the radius R of the (i + 1) th circular holei+1＝Ri-2r0，RiIndicating the radius of the ith circular hole, so that the (i + 1) th circular table can be formed on the ith circular table, and the upper bottom surface of the (i + 1) th circular table is taken as the upper bottom surface of the (i + 1) th circular table, and executing the step S104;
step S104, aiming at the Nth round hole, after the central shaft of the Nth round hole is adjusted to be overlapped with the first vertical shaft by the aperture adjusting device, the discharging adjusting device pushes the discharging device to move, a first distance between the circle center of the discharging round hole and the first vertical shaft is adjusted to enable the first distance to be smaller than or equal to the radius of the discharging round hole, the Nth round hole is covered by the discharging round hole, and then the telescopic mechanism drives the discharging device and the round hole disc to move upwards for a corresponding second distance, so that a conical part at the top of the cone is formed on the (N-1) round table, and powder is stacked into the cone in a layer-by-layer stacking manner;
s105, controlling the aperture adjusting device to drive the circular hole plate to rotate so as to enable the discharge circular hole to be abutted against the non-circular hole area, and then controlling the electric telescopic mechanism to drive the discharge device and the circular hole plate to move downwards by a corresponding third distance so as to press the cone downwards and press the cone into a circular table;
and S106, controlling the discharge adjusting device to drive the circular hole disc to move, switching the cross-shaped material distribution plate to be right above the circular table, enabling the cross-shaped intersection of the cross-shaped material distribution plate to be located on the central shaft of the circular table, and controlling the electric telescopic mechanism to drive the cross-shaped material distribution plate to move downwards to divide the circular table into four equal parts.
In another alternative implementation, the discharge circular hole is kept in abutment with a non-circular hole area on the circular hole disc from the time of overlapping with one circular hole part to the time of overlapping with the other circular hole part or covering the Nth circular hole therein.
In another optional implementation manner, the aperture adjusting device includes a first motor, the first motor is fixedly connected to the lower surface of the circular hole disc and is disposed at a central position of the circular hole disc, the center of each circular hole on the circular hole disc is on a circle coaxial with the circular hole disc, the first motor is configured to drive the circular hole disc to rotate, so that the central axis of the corresponding circular hole is adjusted to coincide with the first vertical axis, in an initial state, the first vertical axis intersects with the circle where the center of each circular hole is located, the discharge circular hole abuts against the upper surface of a non-circular hole area of the circular hole disc, the discharge circular hole is located on the right side of the first motor, and when the central axis of the circular hole with the largest diameter among the circular holes is adjusted to coincide with the first vertical axis, the distance between the discharge circular hole and the center of the circular hole with the largest diameter is greater than or equal to the sum of the radii of the discharge circular hole and the circular;
the discharging adjusting device comprises a second motor, a third motor, a first transverse plate, a second transverse plate, a third transverse plate, a fourth transverse plate, a first vertical plate and an electric telescopic rod capable of stretching left and right, wherein a base of the second motor is fixed on the lower surface of the first transverse plate, the left end of the first transverse plate is fixedly connected with the upper end of the first vertical plate, the lower end of the first vertical plate is fixedly connected with the left end of the second transverse plate, a base of the first motor is fixed on the upper surface of the second transverse plate, a base of the third motor is fixed on the lower surface of the second transverse plate, a first chute is arranged on the third transverse plate, a protrusion facing inwards is arranged in the first chute, an output shaft of the third motor is arranged in the first chute, a corresponding protrusion is arranged on the side surface of the output shaft of the third motor, and the discharging device is vertically and fixedly connected with the fourth transverse plate, a second sliding groove is formed in the fourth transverse plate and located on the right side of the discharging device, an output shaft of the second motor is arranged in the second sliding groove, the left end of the fourth transverse plate is also abutted against the telescopic end of the electric telescopic rod, the other end of the electric telescopic rod is fixed to the first vertical plate, the right end of the fourth transverse plate is fixedly connected with the upper end of the second vertical plate, and the lower end of the second vertical plate is fixedly arranged on the table top;
when the third motor rotates, the third motor moves left and right along the first sliding groove under the action of the protruding part, so that the circular hole disc is driven to move left and right through the second transverse plate and the first motor, the second motor is driven to move left and right synchronously along the second sliding groove through the second transverse plate, the first vertical plate and the first transverse plate, namely, a rotating shaft of the second motor is used as a first vertical shaft to move left and right synchronously, the electric telescopic rod is driven to move left and right through the second transverse plate and the first vertical plate, and the electric telescopic rod extends the moving distance in the left and right moving process according to the right and left direction, so that the telescopic end of the electric telescopic rod is enabled to be abutted against the left end of the fourth transverse plate; the second motor drives the discharging device to rotate around the central shaft of the second motor through the fourth transverse plate, and the electric telescopic rod is contracted in the rotating process of the discharging device so as to ensure the normal operation of the rotation of the discharging device;
the discharging circular hole is located on the right side of the second transverse plate, the third motor and the third transverse plate, and the telescopic end of the electric telescopic rod mechanism is vertically and fixedly connected with the lower surface of the third transverse plate.
In another optional implementation manner, the front end and the rear end of the output shaft of the second motor are respectively provided with a support piece, the upper surfaces of the two support pieces are provided with a convex point, the upper surface of the fourth transverse plate is provided with a second sliding groove capable of sliding in the left-right direction, the second sliding groove is composed of two concave strips with opposite openings, the inner upper surfaces of the concave strips on the front side and the rear side are both provided with grooves in the left-right direction, the convex points on the two support pieces are installed in the front-back corresponding grooves, and the convex points slide in the grooves in the left-right direction.
In another optional implementation manner, the controller is respectively connected with the first motor, the second motor, the third motor, the electric telescopic rod and the electric telescopic mechanism, and the controller is used for stacking the powder into a cone in a layer-by-layer overlapping manner according to the following steps:
in step S201, for the powder with volume V, firstly, the height h of the cone formed by expected accumulation is input into the controller, and the base area radius of the cone formed by expected accumulation is calculated
Step S202, according to the diameter, RCone bodySequentially comparing the radius of each round hole, and judging R for the ith round holeCone bodyWhether or not it is larger than the radius R of the ith round holeiIf yes, the ith round hole is taken as the 1 st round hole, and the step S103 is executed, otherwise, i + +, the step S202 is executed again;
step S203, aiming at each round hole in the ith to (N-1) round holes, controlling the first motor to drive the round hole disc to rotate according to the diameter, so that the central axis of the ith round hole is superposed with the first vertical axis, and executing step S204;
step S204, calculating a second distance h for each round hole to move upwardsi＝h*2*r0/RCone body；
Step S205, controlling the third motor to rotate counterclockwise, under the action of the protrusion in the first sliding slot, the third motor moves leftward along the first sliding slot on the third horizontal plate while rotating, so as to drive the circular hole plate to move leftward through the second horizontal plate and the first motor, and drive the second motor to move leftward along the second sliding slot through the second horizontal plate, the first vertical plate and the first horizontal plate, that is, to make the rotating shaft of the second motor move leftward as the first vertical shaft, and to drive the electric telescopic rod to move leftward through the second horizontal plate and the first vertical plate, and the electric telescopic rod extends rightward during moving leftward to ensure that the telescopic end of the electric telescopic rod abuts against the left end of the fourth horizontal plate, and after a first distance between the center of the circular hole and the first vertical shaft (i.e., the rotating central axis of the second motor) is equal to the set radius (R0+ R), controlling the third motor to stop rotating, wherein the discharging round hole is partially overlapped with the ith round hole, and controlling the electric telescopic rod to be contracted from the first position to the second position so as to ensure the normal operation of the discharging device;
step S206, controlling the second motor to drive the discharging device through the fourth transverse plate and rotate around the central shaft of the second motor by taking the set radius as the radius, controlling the electric telescopic mechanism to drive the discharging device and the circular hole disc to move upwards by a corresponding distance every time the second motor rotates by one circle, and controlling the electric telescopic mechanism to move upwards by a second distance equal to h after the second motor rotates by an integral multiple of the number of the circlesiForming an ith round table, judging whether i is equal to N-1, if so, executing a step S208, otherwise, executing a step S207;
step S207, i + +, controlling the first motor to drive the circular hole disc to rotate so that the central axis of the ith circular hole coincides with the central axis of the second motor, and returning to execute step S206;
step S208, the electric telescopic rod is controlled to extend rightwards from the second position to the first position until the electric telescopic rod abuts against the left end of the fourth transverse plate, then the electric telescopic rod is continuously controlled to extend rightwards, the fourth transverse plate is pushed to push the discharging device to move rightwards, a first distance between the circle center of the discharging circular hole and the first vertical shaft is adjusted, so that the first distance is smaller than or equal to the radius of the discharging circular hole, and the discharging circular hole covers the Nth circular hole;
step S209, calculating a second distance h for the Nth round hole to move upwardsN＝h*RN-1/RCone body，RN-1Represents the radius of the (N-1) th circular hole;
step S210, controlling the telescopic mechanism to drive the discharging device and the circular hole disc to move upwards by a corresponding second distance hNSo as to form a tapered portion of the top of the cone on the (N-1) th round table, thereby piling up the powder into a cone in a layer-by-layer overlapping manner;
step S211, controlling the first motor to drive the circular hole plate to rotate so as to enable the discharge circular hole to be abutted against the non-circular hole area, and then controlling the electric telescopic mechanism to drive the discharge device and the circular hole plate to move downwards by a corresponding third distance so as to press the cone downwards and press the cone into a circular table;
step S212, controlling the third motor to rotate counterclockwise to drive the circular hole plate to move leftward, so as to drive the cross-shaped material distribution plate to move leftward to a position right above the circular truncated cone, so that the cross intersection of the cross-shaped material distribution plate is located on the central axis of the circular truncated cone, and then controlling the electric telescopic mechanism to drive the cross-shaped material distribution plate to move downward until the cross-shaped material distribution plate abuts against the bearing plate, so as to divide the circular truncated cone into four equal parts.
In another optional implementation manner, the controller locally stores the rotation angle of the central shaft of each round hole to be coincident with the first vertical shaft, the rotation angle of the first motor, the telescopic length of the electric telescopic rod in each stage and the rotation number of the third motor in each stage.
In another alternative implementation manner, in the step S201, for the powder with the volume V, when the inclination angle α of the cone formed by the preset stack is input to the controller, the base area radius of the cone formed by the preset stack is calculated:
and calculating the height h-R of the cone formed by the predicted stackingCone body*tanα。
In another alternative implementation, the height h is less than or equal to 3 cm.
The invention has the beneficial effects that:
1. according to the food detection sampling device, the cone is divided into a plurality of layer structures, solid powder is deposited on the bearing plate in a layer-by-layer overlapping mode, and a large amount of powder can be prevented from flying in the powder deposition process; the height of the cone can not be accurately mastered during manual operation, but the height of the cone can be below 3cm only by pressing down the cone, and the pressing-down height of the cone needs to be measured during manual pressing down, but the cone can be deposited according to the preset height, namely, the cone can be directly deposited to below 3cm, the situation that the cone needs to be manually pressed down and the height of the cone needs to be measured during pressing down is avoided; in addition, when the cross-shaped material distributing plate is directly moved downwards to distribute the material to the cone, powder at the top end of the cone is easy to fall from a high position to form dust flying, so that the cone is pressed downwards even if the cone is deposited to 3cm, and the cone is not pressed downwards to be less than 3cm in the traditional meaning in a quartering method but is prevented from flying; therefore, the automatic operation of the quartering method in the food detection solid sampling can be realized, and a large amount of dust can be prevented from flying in the automatic operation process of the device;
2. the invention is provided with a discharging device and a circular hole disc, the position relation between the discharging circular hole and the circular hole disc in the discharging device is adjusted through the combined action among a discharging adjusting device, an aperture adjusting device and a telescopic mechanism, a conical structure at the top of a circular table and a cone can be formed layer by layer according to the sequence of the cone from bottom to top, powder is stacked into the cone in a layer-by-layer stacking mode, not only can the powder be automatically formed into the cone, but also the cone can be prevented from flying upwards in the forming process, so that the powder loss is reduced, in addition, the invention directly utilizes a non-circular hole area of the circular hole disc to press down the cone, the structure is simpler, a switching mechanism between a cross material distributing plate and discharging is integrated on the discharging adjusting device, and the structure can be further simplified;
3. the invention can form a cone with a preset shape according to the volume and height requirements of the input powder;
4. the invention can also form a cone with a preset shape according to the volume and the inclination angle requirements of the input powder.
Drawings
FIG. 1 is a plan view of the relative positions of the circular holes on the circular hole plate, the discharge circular hole and the first motor;
FIG. 2 is a schematic view of a progressive stack-up of cones;
FIG. 3 is a schematic structural diagram of one embodiment of the food detection sampling device of the present invention;
FIG. 4 is a top view of the relative position of the third cross plate and the third motor;
FIG. 5 is a top view of the relative position of the fourth cross plate and the first motor;
FIG. 6 is a top view of the first motor of FIG. 5;
FIG. 7 is a right side view of the second runner of FIG. 5;
FIG. 8 is a schematic view of a model for calculating a second distance for the second electric telescopic rod to move up;
fig. 9 is a top view of the orifice plate and the cross-shaped material distribution plate of fig. 3.
Detailed Description
In order to make the technical solutions in the embodiments of the present invention better understood and make the above objects, features and advantages of the embodiments of the present invention more comprehensible, the technical solutions in the embodiments of the present invention are described in further detail below with reference to the accompanying drawings.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the term "connected" is to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, or a communication between two elements, or may be a direct connection or an indirect connection through an intermediate medium, and a specific meaning of the term may be understood by those skilled in the art according to specific situations.
The invention provides a food detection sampling device, which can comprise a cone forming downward-pressing switching mechanism and a cross-shaped material distribution plate, wherein the cone forming downward-pressing switching mechanism is connected with the cross-shaped material distribution plate, solid powder is firstly deposited on a bearing plate at a preset height h in a layer-by-layer overlapping mode to form a cone, then the cone is pressed downwards to press the cone into a circular truncated cone, the cross-shaped material distribution plate is switched to be positioned right above the circular truncated cone, the cross-shaped intersection position of the cross-shaped material distribution plate is positioned on the central shaft of the circular truncated cone, and finally the cross-shaped material distribution plate is controlled to move downwards to divide the circular truncated cone into four equal parts.
According to the food detection sampling device, the cone is divided into a plurality of layer structures, solid powder is deposited on the bearing plate in a layer-by-layer overlapping mode, and a large amount of powder can be prevented from flying in the powder deposition process; the height of the cone can not be accurately mastered during manual operation, but the height of the cone can be below 3cm only by pressing down the cone, and the pressing-down height of the cone needs to be measured during manual pressing down, but the cone can be deposited according to the preset height, namely, the cone can be directly deposited to below 3cm, the situation that the cone needs to be manually pressed down and the height of the cone needs to be measured during pressing down is avoided; in addition, when the cross-shaped material separating plate is directly moved downwards to separate the cone, powder at the top end of the cone is easy to fall from a high position to form dust flying, so that the cone is pressed downwards even if the cone is deposited to 3cm, and the cone is not pressed downwards to be less than 3cm in the traditional meaning in the quartering method, but the dust flying is avoided. Therefore, the automatic operation of the quartering method in the food detection solid sampling can be realized, and a large amount of dust can be prevented from flying in the automatic operation process of the device.
The cone forming and downward-pressing switching mechanism can comprise a discharging device, a circular hole disc, a discharging adjusting device, an aperture adjusting device and a telescopic mechanism capable of stretching up and down, wherein the discharging device is used for containing powder of solid food to be detected, the circular hole disc is provided with N circular holes with different diameters, N is an integer larger than 2, the circumferential side wall of the circular hole disc is fixedly connected with one end of a support of the cross-shaped material distributing plate 15 (shown by combining the drawing figures 3 and 9), and in an initial state, a discharging circular hole 12 of the discharging device is abutted against a non-circular hole area of the circular hole disc 2 so as to store the powder in an area enclosed by the discharging device and the circular hole disc, as shown in (1) in figure 1; the controller is connected with ejection of compact adjusting device, aperture adjusting device and telescopic machanism respectively, and this controller is controlled this ejection of compact adjusting device, aperture adjusting device and telescopic machanism according to following step to pile up into the cone with the powder according to successive layer stack's mode:
step S101, controlling the aperture adjusting device to sequentially adjust the central axis of a corresponding circular hole of the front N-1 circular holes on the circular hole disc to coincide with the first vertical axis according to the diameter, and for the ith circular hole 11 of the front N-1 circular holes, as shown in (2) in fig. 1, i is an integer greater than 0 and less than N, after the central axis of the ith circular hole coincides with the first vertical axis, executing step S102.
Step S102, controlling the discharging adjustment device to synchronously drive the i-th circular hole 11 and the first vertical shaft to move, and adjusting a first distance between a center of the circular hole 12 and the first vertical shaft, so that the first distance is equal to a set radius (R0+ R), where the circular hole 12 is partially overlapped with the i-th circular hole 11, as shown in (3) in fig. 1, where R0 represents a closest distance (i.e., a radius of a circle represented by a dotted line in each circular hole 11 in fig. 1) between the circular hole 12 and the first vertical shaft when the circular hole rotates around the first vertical shaft, R0 is a non-zero value, and R represents a radius of the circular hole, and step S103 is executed.
S103, controlling the discharging adjusting device to drive the discharging circular hole 12 to rotate around a first vertical shaft by taking the set radius as the radius, controlling the telescopic mechanism to drive the discharging device and the circular hole disc to move upwards for a corresponding second distance until powder in the discharging device is deposited downwards to form an ith circular table, judging whether i is equal to N-1 or not after the ith circular table is formed, if i is not equal to N-1, i + +, returning to the step S101, and if i is equal to N-1, indicating that the corresponding number of circular tables are formed, wherein the corresponding number of circular tables are sequentially cones from bottom to topPart, wherein the 1 st round platform forms on the loading board, the radius R of the (i + 1) th round holei+1＝Ri-2r0，RiThe radius of the ith circular hole is indicated, and thus the (i + 1) th circular table may be formed on the ith circular table, and the upper bottom surface of the ith circular table is used as the upper bottom surface of the (i + 1) th circular table, and step S104 is performed.
In this embodiment, because the central axis of the circular hole coincides with the first vertical axis after being adjusted by the aperture adjusting device for the corresponding circular hole of the first N-1 circular holes, and the first distance between the discharging circular hole and the first vertical axis after being adjusted by the discharging adjusting device is equal to the set radius, when the first N-1 circular holes rotate around the first vertical axis, the first N-1 circular holes rotate around the circle (the circle shown by the dotted line in each circular hole 11 in fig. 1) with the set radius as the radius, and in addition, because the discharging circular holes and the corresponding circular holes are partially overlapped during the rotation process of the first N-1 circular holes, the powder stored in the discharging device is deposited downward along the annular opening, and during the downward deposition of the powder, an annular structure with the first vertical axis as the central axis, the vertical cross section as a rectangle, the set radius as the inner diameter, and the radius of the circular hole as the outer diameter is formed first, along with telescopic machanism drives discharging device and round hole dish and moves upward, the powder from the border of loop configuration landing downwards to form the loop configuration that vertical cross-section is the rectangle, later along with the further subsidence of powder, the space between the loop configuration is filled up, as shown in fig. 2, thereby make whole form a round platform structure jointly, because at the in-process that forms the round platform, at first at peripheral loop configuration that forms, then fill in the loop configuration inside again, the powder takes place to fly upward when the peripheral wall of loop configuration can avoid inside powder to fill, therefore the powder loss when can reducing the round platform and form.
Since the sequentially formed round platforms need to belong to a part from the cone to the bottom and up respectively, in order to ensure that the lower bottom surface of the next formed round platform is the upper bottom surface of the previous round platform, as shown in fig. 8, the radius R of the (i + 1) th round holei+1＝Ri-2r0，RiThe radius of the i-th circular hole is indicated. Because each circular truncated cone forming the cone is formed by overlapping layer by layer in the process of forming the cone,the powder can be reduced from flying in the forming process of each round platform, the powder loss is avoided, each round platform is deposited on the last round platform formed, and the phenomenon that a large amount of powder sinks from the high position cannot occur on the outer surface of each round platform in the forming process of each round platform, so that the powder can be further prevented from flying, and the powder loss is avoided.
Step S104, aiming at the Nth round hole, after the central shaft of the Nth round hole is adjusted to be overlapped with the first vertical shaft by the aperture adjusting device, as shown in (4) in figure 1, the discharging device is pushed to move by the discharging adjusting device, the first distance between the circle center of the discharging round hole 12 and the first vertical shaft is adjusted, so that the first distance is smaller than or equal to the radius of the discharging round hole, the discharging round hole covers the Nth round hole therein, as shown in (5) in figure 1, and then the telescopic mechanism drives the discharging device and the round hole disc to move upwards by a corresponding second distance, so that a conical part at the top of the cone is formed on the Nth round table, and therefore, powder is stacked into the cone in a layer-by-layer stacking mode. In the process that the discharge circular hole is overlapped with one circular hole part to be overlapped with the other circular hole part or to cover the Nth circular hole in the discharge circular hole, the discharge circular hole is kept in butt joint with a non-circular hole area on the circular hole disc, so that powder in the discharge device is prevented from being deposited downwards from the circular hole. Wherein, the discharging device is cylindrical, and the upper end and the lower end of the discharging device are both provided with openings.
Step S105, controlling the aperture adjusting device to drive the circular hole plate to rotate so as to enable the discharge circular hole to be abutted against the non-circular hole area, and controlling the electric telescopic mechanism to drive the discharge device and the circular hole plate to move downwards by a corresponding third distance, so that the cone is pressed downwards to form the circular truncated cone. The invention utilizes the non-circular hole area of the circular hole disk to press down the cone without adding other mechanisms, thereby having simpler structure.
And S106, controlling the discharge adjusting device to drive the circular hole disc to move, switching the cross-shaped material distribution plate to be right above the circular table, enabling the cross-shaped intersection of the cross-shaped material distribution plate to be located on the central shaft of the circular table, and controlling the electric telescopic mechanism to drive the cross-shaped material distribution plate to move downwards to divide the circular table into four equal parts.
According to the embodiment, the powder cone forming machine is provided with the discharging device and the circular hole disc, the position relation between the discharging circular hole in the discharging device and the circular hole disc is adjusted through the combined action among the discharging adjusting device, the aperture adjusting device and the telescopic mechanism, the conical structures at the top of the circular truncated cone and the circular hole disc can be formed layer by layer according to the sequence of the circular truncated cone from bottom to top, powder is stacked into the circular truncated cone in a layer-by-layer stacking mode, powder coning can be automatically achieved, and the circular truncated cone can prevent a large amount of powder from flying upwards in the forming process, so that the powder loss is reduced; in addition, the invention directly utilizes the non-circular hole area of the circular hole disc to press the cone, the structure is simpler, and the switching mechanism of the cross-shaped material distribution plate is integrated on the discharging adjusting device, so that the structure can be further simplified.
Wherein, as shown in fig. 1 and fig. 3, the aperture adjusting device includes a first motor 1, the first motor 1 is fixedly connected with the lower surface of the circular hole disc 2 and is arranged at the center of the circular hole disc 2, the circle center of each circular hole 11 on the circular hole disk 2 is on a circle coaxial with the circular hole disk 2, the first motor 1 is used for driving the circular hole disc 2 to rotate, so that the central axis of the corresponding circular hole is adjusted to be coincident with the first vertical axis, in an initial state, the first vertical shaft is crossed with a circle where the center of each circular hole 11 is located, the discharge circular hole 12 is abutted with the upper surface of a non-circular hole area of the circular hole disc 2, the discharge circular hole 12 is located at the right side of the first motor 1 and the central axis of the circular hole with the largest diameter among the circular holes 11 is adjusted to coincide with the first vertical axis, the distance between the circular hole 12 and the circular hole with the largest diameter is larger than or equal to the sum of the radiuses of the circular hole and the circular hole.
The discharging adjusting device comprises a second motor 3, a third motor 4, a first transverse plate 5, a second transverse plate 6, a third transverse plate 7, a fourth transverse plate 8, a first vertical plate 14 and an electric telescopic rod 10 capable of stretching left and right, wherein a base of the second motor 3 is fixed on the lower surface of the first transverse plate 5, the left end of the first transverse plate 5 is fixedly connected with the upper end of the first vertical plate 14, the lower end of the first vertical plate 14 is fixedly connected with the left end of the second transverse plate 6, a base of the first motor 1 is fixed on the upper surface of the second transverse plate 6, a base of the third motor 4 is fixed on the lower surface of the second transverse plate 6, as shown in a combined view of fig. 4, a first sliding groove 71 is arranged on the third transverse plate 7, a protrusion 72 facing to the inner side is arranged in the first sliding groove, an output shaft of the third motor 4 is arranged in the first sliding groove 71, and a corresponding protrusion 41 is arranged on the side surface of the output shaft of the third motor 4, this discharging device 13 and this fourth diaphragm 8 perpendicular fixed connection, as shown in combination fig. 5, be provided with the second spout 81 that is located this discharging device 13 right side on this fourth diaphragm 8, the output shaft setting of this second motor 3 is in this second spout 81, the left end of this fourth diaphragm 8 still with this electric telescopic handle 10 flexible end butt, the other end of this electric telescopic handle 10 is fixed on this first riser 14. In this embodiment, the output shaft of the second motor 3 is disposed in the second chute 81, on the one hand, the second motor 3 can slide along the second chute 81, and on the other hand, the fourth horizontal plate 8 can be horizontally fixed in a suspended manner, and since the discharging device 13 is vertically fixed to the fourth horizontal plate 8, the discharging device 8 can be vertically disposed.
When the third motor 4 rotates, under the action of the protruding portions 72 and 41, the third motor moves left and right along the first sliding groove 71, so that the circular hole plate 2 is driven to move left and right through the second transverse plate 6 and the first motor 1, the second motor 3 is driven to move left and right along the second sliding groove 81 synchronously through the second transverse plate 6, the first vertical plate 14 and the first transverse plate 5, that is, the rotating shaft of the second motor 3 is used as a first vertical shaft to move left and right synchronously, the electric telescopic rod 10 is driven to move left and right through the second transverse plate 6 and the first vertical plate 14, and the electric telescopic rod 10 extends the moving distance in the left and right moving process according to the left and right direction, so that the telescopic end of the electric telescopic rod 10 is ensured to be abutted against the left end of the fourth transverse plate 8; the second motor 3 drives the discharging device 13 to rotate around the central shaft of the second motor 3 through the fourth transverse plate 8, and the electric telescopic rod 10 is contracted in the rotating process of the discharging device 13 so as to ensure the normal operation of the rotation of the discharging device 13; the discharge round hole 12 is located at the right side of the second transverse plate 6, the third motor 4 and the third transverse plate 7. According to the invention, the first motor, the second transverse plate, the third motor and the third transverse plate are arranged on the left side of the discharge circular hole, and the second motor is positioned on the right side of the discharge circular hole, so that when the central shaft of each circular hole rotates to coincide with the rotating shaft of the second motor, the discharge circular hole and the part below the circular hole can be protected from other devices all the time, and thus the conical shape can be conveniently formed below the discharge circular hole and the circular hole. In addition, the telescopic end of the electric telescopic rod mechanism 9 is vertically and fixedly connected with the lower surface of the third transverse plate 7.
Referring to fig. 6 and 7, the supporting pieces 31 are respectively disposed at the front and rear ends of the output shaft of the second motor 3, the protruding points 32 are disposed on the upper surfaces of the two supporting pieces 31, the second sliding groove 81 capable of sliding in the left-right direction is disposed on the upper surface of the fourth horizontal plate 8, the second sliding groove 81 is composed of two concave bars with opposite openings, the inner upper surfaces of the concave bars on the front side and the rear side are both provided with left-right grooves 82, the protruding points 32 on the two supporting pieces 31 are mounted in the corresponding front-rear grooves 82, and the protruding points slide in the left-right direction in the grooves 82.
In addition, the controller is connected with first motor 1, second motor 3, third motor 4, electric telescopic handle 10 and electric telescopic mechanism 9 respectively, and it adopts the mode of layer-by-layer stack to pile up the powder into the cone according to following step:
in step S201, for the powder with volume V, firstly, the height h of the cone formed by expected accumulation is input into the controller, and the base area radius of the cone formed by expected accumulation is calculated
Wherein h can be selected to be 3cm or below 3 cm.
Step S202, according to the diameter, RCone bodySequentially comparing the radius of each round hole, and judging R for the ith round holeCone bodyWhether or not it is larger than the radius R of the ith round holeiIf so, the ith round hole is taken as the 1 st round hole, and step S103 is executed, otherwise, i + +, and the step S202 is executed again.
Step S203, for each round hole in the ith to (N-1) th round holes, according to the diameter, controlling the first motor 1 to drive the round hole disc 2 to rotate, so that the central axis of the ith round hole coincides with the first vertical axis (i.e. the central axis of the second motor 3), and executing step S204.
Step S204, as shown in fig. 8, is performed such that tan α is h/RCone body＝hiA/2 r0, wherein α represents the inclination angle of the cone, and a second distance h for the upward movement of the i-th to (N-1) -th round holes is calculatedi＝h*2*r0/RCone body。
Step S205, controlling the third motor 4 to rotate counterclockwise, under the action of the protrusion in the first sliding slot, the third motor 4 moves leftward along the first sliding slot on the third horizontal plate 7 while rotating, so as to drive the circular hole plate 2 to move leftward through the second horizontal plate 6 and the first motor 1, and drive the second motor 3 to move leftward along the second sliding slot through the second horizontal plate 6, the first vertical plate 14 and the first horizontal plate 5, i.e. the rotating shaft of the second motor is used as the first vertical shaft to move leftward synchronously, and drive the electric telescopic rod 10 to move leftward through the second horizontal plate 6 and the first vertical plate 14, and the electric telescopic rod 10 extends rightward during moving leftward to ensure that the telescopic end of the electric telescopic rod 10 abuts against the left end of the fourth horizontal plate 8, and after a first distance between the center of the circular hole 12 and the first vertical shaft (i.e. the rotating central axis of the second motor) is equal to the set radius (R0+ R), the third motor 4 is controlled to stop rotating, at this time, the discharging round hole 12 is partially overlapped with the ith round hole, and the electric telescopic rod 10 is controlled to be contracted from the first position to the second position, so as to ensure the normal operation of the rotation of the discharging device.
Step S206, controlling the second motor 3 to drive the discharging device 13 via the fourth horizontal plate 8 with the set radius as the radius, rotating around the central axis of the second motor 3, controlling the electric telescoping mechanism 9 to drive the discharging device 13 and the circular hole disc 2 to move up by the corresponding distance every time the second motor rotates by one circle, until the second distance of the electric telescoping mechanism 9 moving up is equal to h after the second motor rotates by the corresponding integral multiple of the number of circlesiAnd forming an ith round table, judging whether i is equal to N-1, if so, executing the step S208, otherwise, executing the step S207.
Step S207, i + +, controlling the first motor 1 to drive the circular hole disc 2 to rotate, so that the central axis of the ith circular hole coincides with the central axis of the second motor, and returning to perform step S206. Because the circle centers of the circular holes on the circular hole disc 2 are all on the concentric circle on the circular hole disc, in an initial state, the central axis of the second motor 3 is perpendicularly intersected with the concentric circle where the circle center on the circular hole disc 2 is located, and the second motor 3 drives the corresponding circular hole to rotate by taking the set radius as the radius, once the first distance between the circle center of the discharge circular hole 12 and the circle center of any one of the first N-1 circular holes is adjusted to be the set radius, the circular hole disc is rotated, so that when other circular holes in the first N-1 circular holes rotate to be overlapped with the central axis of the second motor, the first distance between the discharge circular hole 12 and other circular holes is continuously kept to be the set radius, and in this embodiment, the step S207 can be directly executed instead of the step S205.
Step S208, controlling the electric telescopic rod 10 to extend rightward from the second position to the first position until abutting against the left end of the fourth horizontal plate 8, and thereafter continuing to control the electric telescopic rod 10 to extend rightward, pushing the discharging device 13 to move rightward by pushing the fourth horizontal plate 8, adjusting a first distance between the center of the circular discharging hole and the first vertical axis, so that the first distance is smaller than or equal to the radius of the circular discharging hole, and the circular discharging hole 12 covers the nth circular hole therein.
Step S209, calculating a second distance h for the Nth round hole to move upwardsN＝h*RN-1/RCone body，RN-1The radius of the (N-1) th circular hole is shown.
Step S210, controlling the telescopic mechanism 9 to drive the discharging device 12 and the circular hole disc 2 to move upwards by a corresponding second distance hNSo that a tapered portion of the top of the cone is formed on the (N-1) th round table, thereby piling up the powder in a layer-by-layer manner into a cone. The controller locally stores the central axis of each round hole, the central axis rotates to coincide with the first vertical axis, the angle of the first motor, the telescopic length of the electric telescopic rod at each stage and the number of rotation turns of the third motor at each stage.
Step S211, controlling the first motor 1 to drive the circular hole plate 2 to rotate, so that the discharge circular hole 12 abuts against the non-circular hole region, as shown in (6) in fig. 1, and then controlling the electric telescopic mechanism 9 to drive the discharge device 13 and the circular hole plate 2 to move downward by a third distance (which may be a set value), so as to press the cone, so that the cone is pressed into a circular table.
Step S212, controlling the third motor 4 to rotate counterclockwise to drive the circular hole disc 2 to move leftward, so as to drive the cross-shaped material distribution plate 15 to move leftward right above the circular table, so that the cross-shaped intersection of the cross-shaped material distribution plate 15 is located on the central axis of the circular table, and thereafter controlling the electric telescopic mechanism 9 to drive the cross-shaped material distribution plate 15 to move downward through the third cross plate 7, the third motor 4, the first motor 1 and the circular hole disc 2 until the cross-shaped material distribution plate 15 abuts against the bearing plate, so as to divide the circular table into four equal parts.
As can be seen from the above embodiments, the present invention can form a cone of a predetermined shape according to the volume and height requirements of the input powder. Similarly, the present invention can form a cone of a predetermined shape according to the volume and the inclination angle of the powder to be input, as shown in fig. 8, since h ═ RCone bodyTan α, volume of cone
Therefore, in step S201, when the inclination angle α of the cone formed by the preset stack is input to the controller for the powder with the volume V, the base area radius of the cone formed by the preset stack is calculated as follows:
and calculating the height h-R of the cone formed by the predicted stackingCone bodyTan α. thereafter, the powder is stacked into a cone in a layer-by-layer superimposed manner, following the same steps as described above in S202-S210.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is to be controlled solely by the appended claims.
Claims (9)
1. The utility model provides a food detection sampling device, its characterized in that, includes cone shaping switching mechanism and cross branch flitch that pushes down, cone shaping switching mechanism and this cross branch flitch are connected under pushing down, it is at first according to the mode that the successive layer superposes with the solid powder, deposit on the loading board with preset height h, form the cone, push down to this cone after that, make this cone press into the round platform, switch this cross branch flitch to this round platform directly over, make the crossing department of this cross branch flitch be located the center pin of this round platform, control this cross branch flitch at last and move down, divide into four equal portions with this round platform.
2. The food detection device according to claim 1, wherein the cone forming and downward-pressing switching mechanism comprises a discharging device, a circular hole plate, a discharging adjusting device, an aperture adjusting device and a telescopic mechanism capable of stretching up and down, the discharging device is used for containing powder of solid food to be detected, the circular hole plate is provided with N circular holes with different diameters, N is an integer greater than 2, the circumferential side wall of the circular hole plate is fixedly connected with one end of a support of the cross-shaped material distribution plate, and in an initial state, the discharging circular hole of the discharging device is abutted against a non-circular hole area of the circular hole plate so as to store the powder in an area enclosed by the discharging device and the circular hole plate; the controller is connected with ejection of compact adjusting device, aperture adjusting device and telescopic machanism respectively, controls this ejection of compact adjusting device, aperture adjusting device and telescopic machanism according to following step to pile up into the cone with the powder according to successive layer superimposed mode:
step S101, controlling the aperture adjusting device to sequentially adjust the central axis of a corresponding round hole in the front N-1 round holes on the round hole disc to be coincident with a first vertical axis according to the diameter, wherein for the ith round hole in the front N-1 round holes, i is an integer larger than 0 and smaller than N, and step S102 is executed after the central axis of the ith round hole is coincident with the first vertical axis;
step S102, controlling the discharging adjusting device to synchronously drive the ith round hole and the first vertical shaft to move, adjusting a first distance between the circle center of the discharging round hole and the first vertical shaft so that the first distance is equal to a set radius (R0+ R), and partially overlapping the discharging round hole with the ith round hole, wherein R0 represents the closest distance between the discharging round hole and the first vertical shaft when the discharging round hole rotates around the first vertical shaft, R0 is a non-zero value, R represents the radius of the discharging round hole, and step S103 is executed;
s103, controlling the discharging adjusting device to drive the discharging circular hole to rotate around a first vertical shaft by taking the set radius as the radius, controlling the telescopic mechanism to drive the discharging device and the circular hole disc to move upwards for a corresponding second distance until powder in the discharging device is deposited downwards to form an ith circular table, judging whether i is equal to N-1 or not after the ith circular table is formed, if i is not equal to N-1, i + +, returning to the step S101, and if i is equal to N-1, indicating that the corresponding number of circular tables are formed, wherein the corresponding number of circular tables are part of a cone from bottom to top in sequence, wherein the 1 st circular table is formed on the bearing plate, and the radius R of the (i + 1) th circular holei+1＝Ri-2r0，RiIndicating the radius of the ith circular hole, so that the (i + 1) th circular table can be formed on the ith circular table, and the upper bottom surface of the (i + 1) th circular table is taken as the upper bottom surface of the (i + 1) th circular table, and executing the step S104;
step S104, aiming at the Nth round hole, after the central shaft of the Nth round hole is adjusted to be overlapped with the first vertical shaft by the aperture adjusting device, the discharging adjusting device pushes the discharging device to move, a first distance between the circle center of the discharging round hole and the first vertical shaft is adjusted to enable the first distance to be smaller than or equal to the radius of the discharging round hole, the Nth round hole is covered by the discharging round hole, and then the telescopic mechanism drives the discharging device and the round hole disc to move upwards for a corresponding second distance, so that a conical part at the top of the cone is formed on the (N-1) round table, and powder is stacked into the cone in a layer-by-layer stacking manner;
s105, controlling the aperture adjusting device to drive the circular hole plate to rotate so as to enable the discharge circular hole to be abutted against the non-circular hole area, and then controlling the electric telescopic mechanism to drive the discharge device and the circular hole plate to move downwards by a corresponding third distance so as to press the cone downwards and press the cone into a circular table;
and S106, controlling the discharge adjusting device to drive the circular hole disc to move, switching the cross-shaped material distribution plate to be right above the circular table, enabling the cross-shaped intersection of the cross-shaped material distribution plate to be located on the central shaft of the circular table, and controlling the electric telescopic mechanism to drive the cross-shaped material distribution plate to move downwards to divide the circular table into four equal parts.
3. The food testing and sampling device of claim 2, wherein said discharge circular aperture remains in abutment with a non-circular aperture region on the circular aperture disk from overlapping with one circular aperture portion to overlapping with another circular aperture portion or to overlying an nth circular aperture therein.
4. The food detection sampling device of claim 2 or 3, wherein the aperture adjustment device comprises a first motor, the first motor is fixedly connected with the lower surface of the round hole plate and is arranged at the central position of the round hole plate, the circle center of each round hole on the round hole disc is on a circle coaxial with the round hole disc, the first motor is used for driving the round hole disc to rotate, so that the central shaft of the corresponding round hole is adjusted to be coincident with the first vertical shaft, the first vertical shaft is intersected with a circle where the circle center of each round hole is positioned, the discharge round hole is abutted with the upper surface of a non-round hole area of the round hole disc, the discharge round hole is positioned at the right side of the first motor, and when the central shaft of the round hole with the largest diameter in all round holes is adjusted to be coincident with the first vertical shaft, the distance between the circular hole for discharging and the circle center of the circular hole with the largest diameter is larger than or equal to the sum of the radiuses of the circular hole for discharging and the circular hole with the largest diameter;
the discharging adjusting device comprises a second motor, a third motor, a first transverse plate, a second transverse plate, a third transverse plate, a fourth transverse plate, a first vertical plate and an electric telescopic rod capable of stretching left and right, wherein a base of the second motor is fixed on the lower surface of the first transverse plate, the left end of the first transverse plate is fixedly connected with the upper end of the first vertical plate, the lower end of the first vertical plate is fixedly connected with the left end of the second transverse plate, a base of the first motor is fixed on the upper surface of the second transverse plate, a base of the third motor is fixed on the lower surface of the second transverse plate, a first chute is arranged on the third transverse plate, a protrusion facing inwards is arranged in the first chute, an output shaft of the third motor is arranged in the first chute, a corresponding protrusion is arranged on the side surface of the output shaft of the third motor, and the discharging device is vertically and fixedly connected with the fourth transverse plate, a second sliding groove is formed in the fourth transverse plate and located on the right side of the discharging device, an output shaft of the second motor is arranged in the second sliding groove, the left end of the fourth transverse plate is also abutted against the telescopic end of the electric telescopic rod, the other end of the electric telescopic rod is fixed to the first vertical plate, the right end of the fourth transverse plate is fixedly connected with the upper end of the second vertical plate, and the lower end of the second vertical plate is fixedly arranged on the table top;
when the third motor rotates, the third motor moves left and right along the first sliding groove under the action of the protruding part, so that the circular hole disc is driven to move left and right through the second transverse plate and the first motor, the second motor is driven to move left and right synchronously along the second sliding groove through the second transverse plate, the first vertical plate and the first transverse plate, namely, a rotating shaft of the second motor is used as a first vertical shaft to move left and right synchronously, the electric telescopic rod is driven to move left and right through the second transverse plate and the first vertical plate, and the electric telescopic rod extends the moving distance in the left and right moving process according to the right and left direction, so that the telescopic end of the electric telescopic rod is enabled to be abutted against the left end of the fourth transverse plate; the second motor drives the discharging device to rotate around the central shaft of the second motor through the fourth transverse plate, and the electric telescopic rod is contracted in the rotating process of the discharging device so as to ensure the normal operation of the rotation of the discharging device;
the discharging circular hole is located on the right side of the second transverse plate, the third motor and the third transverse plate, and the telescopic end of the electric telescopic rod mechanism is vertically and fixedly connected with the lower surface of the third transverse plate.
5. The food detecting and sampling device according to claim 4, wherein the front and rear ends of the output shaft of the second motor are respectively provided with a support piece, the upper surfaces of the two support pieces are provided with a protruding point, the upper surface of the fourth horizontal plate is provided with a second sliding slot capable of sliding in the left-right direction, the second sliding slot is composed of two concave strips with opposite openings, the upper surfaces of the inner sides of the front and rear concave strips are provided with left-right grooves, the protruding points on the two support pieces are installed in the front and rear corresponding grooves, and the protruding points slide in the left-right direction in the grooves.
6. The food detection and sampling device of claim 4, wherein the controller is connected to the first motor, the second motor, the third motor, the electric telescopic rod and the electric telescopic mechanism respectively, and the controller is used for stacking the powder into a cone in a layer-by-layer overlapping mode according to the following steps:
in step S201, for the powder with volume V, firstly, the height h of the cone formed by expected accumulation is input into the controller, and the base area radius of the cone formed by expected accumulation is calculated
Step S202, according to the diameter, RCone bodyIn turn corresponding to the radius of each circular holeRespectively comparing the round holes, and judging R for the ith round holeCone bodyWhether or not it is larger than the radius R of the ith round holeiIf yes, the ith round hole is taken as the 1 st round hole, and the step S103 is executed, otherwise, i + +, the step S202 is executed again;
step S203, aiming at each round hole in the ith to (N-1) round holes, controlling the first motor to drive the round hole disc to rotate according to the diameter, so that the central axis of the ith round hole is superposed with the first vertical axis, and executing step S204;
step S204, calculating a second distance h for each round hole to move upwardsi＝h*2*r0/RCone body；
Step S205, controlling the third motor to rotate counterclockwise, under the action of the protrusion in the first sliding slot, the third motor moves leftward along the first sliding slot on the third horizontal plate while rotating, so as to drive the circular hole plate to move leftward through the second horizontal plate and the first motor, and drive the second motor to move leftward along the second sliding slot through the second horizontal plate, the first vertical plate and the first horizontal plate, that is, to make the rotating shaft of the second motor move leftward as the first vertical shaft, and to drive the electric telescopic rod to move leftward through the second horizontal plate and the first vertical plate, and the electric telescopic rod extends rightward during moving leftward to ensure that the telescopic end of the electric telescopic rod abuts against the left end of the fourth horizontal plate, and after a first distance between the center of the circular hole and the first vertical shaft (i.e., the rotating central axis of the second motor) is equal to the set radius (R0+ R), controlling the third motor to stop rotating, wherein the discharging round hole is partially overlapped with the ith round hole, and controlling the electric telescopic rod to be contracted from the first position to the second position so as to ensure the normal operation of the discharging device;
step S206, controlling the second motor to drive the discharging device through the fourth transverse plate and rotate around the central shaft of the second motor by taking the set radius as the radius, controlling the electric telescopic mechanism to drive the discharging device and the circular hole disc to move upwards by a corresponding distance every time the second motor rotates by one circle, and controlling the electric telescopic mechanism to move upwards by a second distance equal to h after the second motor rotates by an integral multiple of the number of the circlesiThereby forming the firsti circular truncated cones, and then judging whether i is equal to N-1, if so, executing a step S208, otherwise, executing a step S207;
step S207, i + +, controlling the first motor to drive the circular hole disc to rotate so that the central axis of the ith circular hole coincides with the central axis of the second motor, and returning to execute step S206;
step S208, the electric telescopic rod is controlled to extend rightwards from the second position to the first position until the electric telescopic rod abuts against the left end of the fourth transverse plate, then the electric telescopic rod is continuously controlled to extend rightwards, the fourth transverse plate is pushed to push the discharging device to move rightwards, a first distance between the circle center of the discharging circular hole and the first vertical shaft is adjusted, so that the first distance is smaller than or equal to the radius of the discharging circular hole, and the discharging circular hole covers the Nth circular hole;
step S209, calculating a second distance h for the Nth round hole to move upwardsN＝h*RN-1/RCone body，RN-1Represents the radius of the (N-1) th circular hole;
step S210, controlling the telescopic mechanism to drive the discharging device and the circular hole disc to move upwards by a corresponding second distance hNSo as to form a tapered portion of the top of the cone on the (N-1) th round table, thereby piling up the powder into a cone in a layer-by-layer overlapping manner;
step S211, controlling the first motor to drive the circular hole plate to rotate so as to enable the discharge circular hole to be abutted against the non-circular hole area, and then controlling the electric telescopic mechanism to drive the discharge device and the circular hole plate to move downwards by a corresponding third distance so as to press the cone downwards and press the cone into a circular table;
step S212, controlling the third motor to rotate counterclockwise to drive the circular hole plate to move leftward, so as to drive the cross-shaped material distribution plate to move leftward to a position right above the circular truncated cone, so that the cross intersection of the cross-shaped material distribution plate is located on the central axis of the circular truncated cone, and then controlling the electric telescopic mechanism to drive the cross-shaped material distribution plate to move downward until the cross-shaped material distribution plate abuts against the bearing plate, so as to divide the circular truncated cone into four equal parts.
7. The food sampling device of claim 6, wherein the controller locally stores the rotation angle of the central axis of each circular hole to coincide with the first vertical axis, the rotation angle of the first motor, the telescopic length of the electric telescopic rod in each stage, and the rotation number of the third motor in each stage.
8. The food detection and sampling device according to claim 6, wherein in step S201, when the inclination angle α of the cone formed by the preset stack is inputted to the controller for the powder with the volume V, the base area radius of the cone formed by the preset stack is calculated as follows:
and calculating the height h-R of the cone formed by the predicted stackingCone body*tanα。
9. Food detection sampling device according to claim 1 or 5, characterized in that the height h is less than or equal to 3 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010297368.4A CN111458189A (en) | 2020-04-15 | 2020-04-15 | Food detection sampling device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010297368.4A CN111458189A (en) | 2020-04-15 | 2020-04-15 | Food detection sampling device |
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| CN111458189A true CN111458189A (en) | 2020-07-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112857931A (en) * | 2021-01-08 | 2021-05-28 | 闫春会 | Food safety inspection is with system appearance device |
| CN114354313A (en) * | 2021-12-29 | 2022-04-15 | 云南华测检测认证有限公司 | Food detection device with built-in pretreatment structure |
-
2020
- 2020-04-15 CN CN202010297368.4A patent/CN111458189A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112857931A (en) * | 2021-01-08 | 2021-05-28 | 闫春会 | Food safety inspection is with system appearance device |
| CN112857931B (en) * | 2021-01-08 | 2022-11-04 | 深圳信测标准技术服务有限公司 | Food safety inspection is with system appearance device |
| CN114354313A (en) * | 2021-12-29 | 2022-04-15 | 云南华测检测认证有限公司 | Food detection device with built-in pretreatment structure |
| CN114354313B (en) * | 2021-12-29 | 2023-12-26 | 云南华测检测认证有限公司 | Food detection device with built-in pretreatment structure |
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