CN210271059U

CN210271059U - Automatic metering device

Info

Publication number: CN210271059U
Application number: CN201921792240.4U
Authority: CN
Inventors: 刘艺
Original assignee: Weihulian Information Technology Chengdu Co ltd
Current assignee: Liu Yi
Priority date: 2019-10-23
Filing date: 2019-10-23
Publication date: 2020-04-07
Anticipated expiration: 2029-10-23

Abstract

The utility model provides an automatic metering device, including the installing frame and the pendulum rod of setting in the installing frame, a through-hole has been seted up at the pendulum rod middle part, wear to be equipped with a both ends and the dabber of installing frame fixed connection in the through-hole, the dabber is perpendicular with goods business turn over direction, the through-hole both ends respectively are provided with one set of torsion spring who establishes outside the dabber, torsion spring one end is provided with first torque arm, the other end is provided with second torque arm, first torque arm and installing frame fixed connection, second torque arm is coiled into colluding and encircles outside the pendulum rod, two the opening direction of torsion spring's second torque arm sets up relatively; the installation frame is provided with a first micro switch in the direction perpendicular to the goods entering and exiting direction, and the swing rod can rotate around the mandrel under the impact of the goods and press the first micro switch. The utility model provides a metering device can realize the accurate statistics of putting into or taking out quantity of automatic vending machine goods, can in time replenish goods and can avoid the goods to run off again.

Description

Automatic metering device

Technical Field

The utility model relates to an unmanned technical field that sells goods, concretely relates to automatic metering device.

Background

The vending machine is a common commercial automation device, is not limited by time and place, can save manpower and facilitate transaction, and is also called a micro supermarket with 24-hour business. Vending machines were developed in the 70's of the 20 th century from japan and europe and the united states. In japan, 70% of canned beverages are sold by vending machines. There are 50 million beverage dispensers distributed worldwide by the well known beverage merchant coca-cola company.

When the vending machine measures the goods, the number of the placed goods is generally calculated manually and registered in the system, the user deducts the number of the corresponding goods according to the payment record after purchasing the corresponding goods, and the replenishment worker determines the selling amount of the corresponding goods according to the goods residual data of the system and determines whether the goods need to be replenished or not.

However, in the in-service use process, the problem of card goods appears easily in the automatic vending machine of locking, and the user is after the payment is accomplished, and the goods does not come out, and the system has subtracted corresponding goods quantity, and the maintenance personal department can not in time be fed back to in the machine problem, also can make the customer disappointed, finally leads to customer's loss. And to unmanned supermarket, the goods are not all locked, and the customer can take out the goods by oneself and carry out the payment, because unmanned on duty, the consumption relies on the consciousness entirely, probably has partial user directly to tear the label, avoids the payment, and this actual quantity that not only can lead to the goods is less than the quantity that the system shows, can't in time remind the replenishment person to replenish the goods, still can cause huge goods loss.

Therefore, certain problems exist in the existing automatic vending industry, the quantity of goods is difficult to accurately count, the goods are lost or a replenishment worker cannot replenish the goods timely, meanwhile, the delivery fault of the machine cannot be fed back timely, and great inconvenience is caused to the use of a user.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an automatic metering device can carry out accurate statistics to the quantity of goods, can remind the replenishment person in time to replenish the goods, can prevent the loss of goods again.

In order to realize the purpose of the utility model, the utility model adopts the technical proposal that:

an automatic metering device comprises an installation frame and a swing rod arranged in the installation frame, wherein a through hole is formed in the middle of the swing rod, a mandrel with two ends fixedly connected with the installation frame penetrates through the through hole, the mandrel is vertical to the goods inlet and outlet direction, two ends of the through hole are respectively provided with a torsion spring sleeved outside the mandrel, one end of each torsion spring is provided with a first torsion arm, the other end of each torsion spring is provided with a second torsion arm, the first torsion arms are fixedly connected with the installation frame, the second torsion arms are wound into a hook shape and are annularly arranged outside the swing rod, and the opening directions of the second torsion arms of the two torsion springs are oppositely arranged; the installation frame is provided with a first micro switch in the direction perpendicular to the goods entering and exiting direction, and the swing rod can rotate around the mandrel under the impact of the goods and press the first micro switch.

Preferably, the pendulum rod includes first sector plate, oval-shaped connecting plate and the second sector plate that from top to bottom connects gradually, the outer circular arc of first sector plate and second sector plate sets up relatively, the second torque arm ring is established in the connecting plate outside.

Preferably, a first electromagnet lock is arranged on the mounting frame in a direction parallel to goods entering and exiting directions, the first electromagnet lock is located on one side, close to the first microswitch, of the mandrel, the electromagnet lock is a push-pull electromagnet or a self-holding electromagnet, the first electromagnet lock comprises a shell and a sliding rod, one end of the sliding rod extends out of the shell, a first annular groove coinciding with a rotating track of the oscillating rod is formed in the connecting plate, and the end portion of the sliding rod is inserted into the first annular groove.

Preferably, the installation frame is provided with the second electromagnet lock in the direction that is on a parallel with the business turn over goods, the second electromagnet lock is located the dabber and keeps away from first micro-gap switch one side, the second electromagnet lock is the same with first electromagnet lock structure, be provided with the second ring channel with the coincidence of pendulum rod rotation orbit on the connecting plate, the slide bar of second electromagnet lock inserts in the second ring channel.

Preferably, offer the mounting groove that is used for installing first electromagnetism iron lock and second electromagnetism iron lock on the installing frame, pendulum rod one end opening setting is kept away from to the mounting groove, and the other end seals to set up and sets up the mounting hole that supplies the slide bar to pass on it, an apron is installed to first electromagnetism iron lock and second electromagnetism iron lock top, the top of the lateral wall of apron and mounting groove is passed through bolted connection, the detection circuitry board of apron for detecting the slide bar position.

Preferably, a second microswitch is arranged on one side of the mounting frame opposite to the first microswitch, and the swing rod automatically and selectively presses the first microswitch or the second microswitch according to the impact direction of the goods.

Preferably, a first arc-shaped plate and a second arc-shaped plate which are parallel to the outer arc of the first sector-shaped plate are symmetrically arranged on two side surfaces of the first sector-shaped plate, the end parts of the first arc-shaped plate and the second arc-shaped plate are flush with the side surfaces of the first sector-shaped plate, the position of the first microswitch is opposite to that of the first arc-shaped plate, the first arc-shaped plate is driven by a swing rod to press the first microswitch, the position of the second microswitch is opposite to that of the second arc-shaped plate, the second arc-shaped plate is driven by the swing rod to press the second microswitch, a balance hole which penetrates through the first sector-shaped plate along the thickness direction of the first sector-shaped plate is symmetrically arranged above the first arc-shaped plate, a balance groove which is perpendicular to a mandrel is symmetrically arranged at the end, where the first sector-shaped plate is connected with a connecting plate, a first balance rod which is arranged on the same side with the first arc-shaped plate is arranged on the second sector-shaped plate, and the first balance rod, and the second fan-shaped plate is provided with a second balance rod which is positioned on the same side as the second arc-shaped plate, the second balance rod is positioned on one side of the second fan-shaped plate close to the first microswitch, and the sum of the volumes of the first balance rod, the second balance rod, the balance hole and the balance groove is equal to the sum of the volumes of the first arc-shaped plate and the second arc-shaped plate.

Preferably, two sides of the top of the first sector plate are respectively provided with an elongated plate, and the elongated plates are perpendicular to the first balance bar.

Preferably, a groove is formed in the top of the first sector plate, and a strong magnet is fixedly arranged in the groove.

Preferably, the mounting frame is rectangular.

The beneficial effects of the utility model are concentrated and are embodied in:

1. the structure is small and exquisite, the arrangement is flexible, and the automatic vending machine can adapt to various automatic vending scenes;

2. the quantity of the taken goods can be accurately measured, so that the situations that the user of the vending machine pays money and does not take the goods out, the benefit of the user is damaged can be avoided, and the embarrassment that goods in an unmanned supermarket run off can be avoided;

3. the device is arranged at the goods inlet, and can accurately count the number of the goods to be replenished, so that errors caused by manual counting are avoided;

4. the commodity detection assembly is adopted to identify the quantity and the variety of the commodity, so that the commodity purchased by a consumer can be accurately identified, the quantity of the goods can be remotely monitored in real time, and the goods can be timely replenished.

5. The quantity of the corresponding goods left on the goods shelf can be monitored in real time and fed back to the system, so that a replenishment worker is informed to replenish the goods in time, the phenomenon of broken sales is avoided, the sales condition of various goods is convenient to count, and the quantity of the goods to be delivered is convenient to adjust in real time;

6. the oscillating bar can return rapidly under the action of the torsion spring after oscillating under the impact of the goods, the reaction is rapid, and the continuous goods feeding and discharging requirements can be met.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is a schematic cross-sectional view B-B of FIG. 2;

FIG. 4 is a schematic view of a swing link structure;

FIG. 5 is a schematic side view of the present invention;

fig. 6 is a top view of the present invention;

fig. 7 is a bottom view of the present invention;

reference numerals: 1-mounting frame, 2-swing rod, 201-first sector plate, 202-connecting plate, 203-second sector plate, 204-first arc plate, 205-second arc plate, 206-first balance rod, 207-second balance rod, 208-balance hole, 209-balance groove, 210-first annular groove, 301-first microswitch, 302-second microswitch, 4-through hole, 5-cover plate, 6-core shaft, 7-torsion spring, 701-second torsion arm, 801-first electromagnet lock, 802-second electromagnet lock, 803-slide rod, 804-mounting hole, 805-mounting groove, 9-groove and 10-strong magnet.

Detailed Description

The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1-7, an automatic metering device is mainly used for metering the in and out of goods of an unmanned vending machine, and is directed to bottle bodies, books or other hard goods, and comprises a mounting frame 1 and a swing rod 2 arranged in the mounting frame 1, wherein the mounting frame 1 can be in any geometric shape such as rectangle, circle or rhombus, and the in and out of the goods channel is generally rectangular, so that the mounting frame 1 is selected to be rectangular to be conveniently installed above the in and out of the goods channel, screw holes can be reserved on the mounting frame 1 during installation, screw holes corresponding to the screw holes are formed in a goods shelf, and the mounting frame 1 is installed on the goods shelf by screws; a through hole 4 is arranged in the middle of the swing rod 2, a mandrel 6 with two ends fixedly connected with the installation frame 1 is arranged in the through hole 4 in a penetrating way, the mandrel 6 is vertical to the in-out direction of the goods, the swing rod 2 can swing left and right around the mandrel 6, two ends of the through hole 4 are respectively provided with a torsion spring 7 sleeved outside the mandrel 6, one end of the torsion spring 7 is provided with a first torsion arm, the other end is provided with a second torsion arm 701, the first torsion arm is positioned at one end far away from the swing rod 2 and fixedly connected with the installation frame 1, the second torsion arm 701 is positioned at one end close to the swing rod 2, the second torsion arm 701 is wound into a hook shape and is annularly arranged outside the swing rod 2, the opening directions of the second torsion arms 701 of the two torsion springs 7 are oppositely arranged, namely, when no external force is applied, the swing rod 2 is positioned between the two second torsion arms 701, and cannot swing by itself under the limitation of the second torsion arms, the swing rod 2 shakes, and once goods pass through, the swing rod 2 immediately returns to an upright state under the action of the torsion spring 7; the installation frame 1 is provided with a first micro switch 301 in the direction vertical to goods entering and exiting, the swing rod 2 can rotate around the mandrel 6 and press the first micro switch 301 under the impact of the goods, the middle part of the swing rod 2 is rotatably connected with the mandrel 6, the lower part of the swing rod 2 is used for contacting with the goods, the upper part of the swing rod 2 is used for pressing the first micro switch 301, when the goods pass, the lower end of the swing rod 2 extends into the goods channel to block the goods, the goods move to push the swing rod 2 to rotate, so that the swing rod 2 inclines, along with the inclination of the swing rod 2, the upper part of the swing rod 2 is contacted with an action reed of the first micro switch 301, the first micro switch 301 is pressed to count the first micro switch 301, if the goods are delivered, the goods are reduced by one, if the goods are supplemented, the goods are increased by one, wherein the automatic vending machine is provided with a set of control system, the quantity detected by the micro switch is directly fed back to the control system and is transmitted to the cloud end by the control system, so that a replenishment worker can monitor the quantity of the goods in real time, and meanwhile, when the vending machine is used for holding the goods, namely, when a user pays money but does not pay the goods, the control system can be set, for example, after paying money for 30s or 1min, the first micro switch is not pressed, the money is automatically returned, the transaction is cancelled, and the benefit of the user is prevented from being damaged. Wherein first micro-gap switch 301 is current commodity, can directly purchase from the market, set up the slotted hole on installing frame 1, through the screw with micro-gap switch install in the slotted hole can, micro-gap switch generally sets up the switch main part in the casing, and be provided with an action reed and decide the contact outside the casing, make the terminal movable contact of action reed and decide the contact and accomplish the action through pressing the action reed, and external force unloads the back, the action reed produces the direction effect, returns the normal position in the twinkling of an eye and makes movable contact and decide the contact separation the utility model discloses during micro-gap switch installation, make the orientation of action reed and pendulum rod 2 press direction looks adaptation can.

The swing link 2 may be set to be any shape such as a rectangle, an ellipse, etc., and in order to enable the swing link 2 to better contact and move with a commodity, in this embodiment, the swing link 2 is optimally designed, so that the swing link 2 includes a first sector plate 201, an elliptical connecting plate 202, and a second sector plate 203, which are sequentially connected from top to bottom, the outer arcs of the first sector plate 201 and the second sector plate 203 are oppositely arranged, both ends of the outer arc of the first sector plate 201 and the second sector plate 203 extend to the outer side of the connecting plate 202, the shapes of the first sector plate 201 and the second sector plate 203 are the same, that is, the swing link 2 is symmetrical along the center line of the connecting plate 202, both ends of the swing link 2 are large, the middle part of the connecting plate 202 is a little times, the contact position between the first sector plate 201 and the second sector plate 203 and the connecting plate 202 is the smallest, meanwhile, the second torsion arm 701 is annularly arranged outside the connecting plate 202, that is, that the distance between the two, when the swing rod 2 rotates, the connecting plate 202 can swing between the second torsion arms 701, and when the swing rod swings to a certain position, the swing rod is limited by the second torsion arms 701, the rotation is blocked, and at the moment, the first sector plate 201 is just contacted with the switch. The arrangement of the second fan-shaped plate 203 enables the goods to be more easily pushed to move when the goods move to the second fan-shaped plate 203, that is, the swing rod 2 is more easily driven to rotate, and meanwhile, when the swing rod 2 is not subjected to an external force due to the overall shape of the swing rod 2, the swing rod 2 is more easily returned to the original position to be separated from the first microswitch 301 so as to allow the goods to pass through next time. In order to make the swing rod 2 more easily separate from the first microswitch 301 and keep upright, a groove 9 can be formed in the top of the first sector plate 201, a neodymium iron boron strong magnet 10 is arranged in the groove 9, the strong magnet 10 can be adhered in the groove 9 by glue, the top of the strong magnet is flush with the top of the groove 9, when the measuring device is used, an iron shell is installed on the measuring device or is close to an iron shelf above a goods channel, and the swing rod 2 is accelerated to return to the middle to be separated from the first microswitch 301 by utilizing the simultaneous action of the strong magnet 10 and a torsion spring.

In some environments, goods are fed in and out of the same side of the shelf, and at the moment, the metering device is required to calculate the goods output quantity and the goods input quantity, so that the second microswitch 302 can be arranged on the side, opposite to the first microswitch 301, of the installation frame 1, the first microswitch 301 and the second microswitch 302 are identical in structure, and the swing rod 2 automatically selects to press the first microswitch 301 or the second microswitch 302 according to the impact direction of the goods. At this moment, the goods business turn over direction is different, it is also different to drive the pivoted direction of pendulum rod 2, can define first micro-gap switch 301, second micro-gap switch 302 by oneself, if define first micro-gap switch 301 as the benefit goods switch, define second micro-gap switch 302 as the shipment switch, then when the goods are mended, pendulum rod 2 is driven the swing by the goods, first micro-gap switch 301 is pressed to first sector plate 201, and during shipment, the goods drives pendulum rod 2 reverse rotation, first sector plate 201 presses second micro-gap switch 302 and counts, thereby can count the volume of getting in goods and shipment well.

When the quantity of the goods entering and exiting is measured, in order to prevent the goods from being excessively high and driving the swing rod 2 to rotate too much, the second fan-shaped plate 203 makes a false touch on the switch, so that the counting is inaccurate, a first arc-shaped plate 204 and a second arc-shaped plate 205 which are parallel to the outer arc of the first fan-shaped plate 201 can be symmetrically arranged on two side surfaces of the first fan-shaped plate 201, the end parts of the first arc-shaped plate 204 and the second arc-shaped plate 205 are flush with the side surfaces of the first fan-shaped plate 201, namely, the first arc-shaped plate 204 and the second arc-shaped plate 205 have the same central angle, the position of the first microswitch 301 is opposite to that of the first arc-shaped plate 204, the first arc-shaped plate 204 is driven by the swing rod 2 to press the first microswitch 301, the position of the second microswitch 302 is opposite to that of the second arc-shaped plate 205 is driven by the swing rod 2 to press the second microswitch 302, namely, the first microswitch 301 and the second microswitch 302 are not on the, but are respectively arranged at two sides of the swing rod 2, the vertical distance between the two is larger than the thickness of the swing rod 2, the first microswitch 301 and the first arc-shaped plate 204 are positioned at the same side of the swing rod 2, the second microswitch 302 and the second arc-shaped plate 205 are positioned at the other side of the swing rod 2, a balance hole 208 penetrating through the first fan-shaped plate 201 along the thickness direction of the first fan-shaped plate 201 is symmetrically arranged above the first arc-shaped plate 204, a balance groove 209 vertical to the mandrel 6 is symmetrically arranged at one end of the first fan-shaped plate 201 connected with the connecting plate 202, a first balance bar 206 at the same side of the first arc-shaped plate 204 is arranged on the second fan-shaped plate 203, the first balance bar 206 is positioned at one side of the second fan-shaped plate 203 far from the first microswitch 301, a second balance bar 207 at the same side of the second fan-shaped plate 205 is arranged on the second fan-shaped plate 203, the second balance bar 207 is positioned at one side of the second fan-, The sum of the volumes of the second balance bar 207, the balance hole 208 and the balance slot 209 is equal to the sum of the volumes of the first arc-shaped plate 204 and the second arc-shaped plate 205, so that the weight of the swing rod 2 is balanced up, down, left and right, that is, the swing rod 2 is easier to return to the center and cannot automatically tilt. And in the use process, if the goods strike the swing rod 2 to enable the first arc-shaped plate 204 to press the first microswitch 301, and the height of the goods is higher, so that the swing rod 2 rotates more positions, the second balance rod 207 is contacted with the lower end of the second microswitch 302 to extrude the second microswitch 302, at this time, the first arc-shaped plate 204 is firstly contacted with the first microswitch 301, then the second balance rod 207 is contacted with the second microswitch 302 along with the rotation of the swing rod 2, a pressing time difference exists between the two, and the time difference is not long, so that the goods can be placed in or taken out according to the sequence triggered by the switches, the number of the goods placed in or taken out is accurately detected, the second microswitch 302 is the same, and the repeated description is not needed. Meanwhile, when the goods pass through the goods passage provided with the metering device, in order to prevent a plurality of goods from leaving from the lower part of the swing rod simultaneously when the swing rod rotates, two sides of the top of the first sector plate 201 are respectively provided with an elongated plate, the lengthened plate is vertical to the first balance bar, taking a beverage bottle as an example, when the second fan-shaped plate 203 is impacted by the goods to drive the first fan-shaped plate 201 to rotate, the lengthened plate can extend into the goods passage to block the beverage bottle in the goods passage, that is, only beverage bottles hitting the second sector plate 203 are allowed to pass through, and beverage bottles located at the rear part are all blocked, so that not only can the goods be counted more accurately, but also the goods can be prevented from being stolen by someone, that is, if there is no lengthening plate, someone may pull the swing rod to make the swing rod continuously press the first micro switch or the second micro switch, only count once, but it can continue to take away the goods from the goods way, consequently, the extension board can also play the effect that reduces the risk that the goods are lost. The sizes of the first balance bar 206, the second balance bar 207, the balance hole 208 and the balance slot 209 may also be adjusted so that the sum of the volumes of the first balance bar 206, the second balance bar 207, the balance hole 208 and the balance slot 209 is equal to the sum of the volumes of the first arc-shaped plate 204, the elongated plate 205 and the second arc-shaped plate 205

In some cases, the access of the goods needs to be limited, for example, at the delivery end, the goods are prohibited from being put in, and the goods need to be locked, so that the goods can only be taken out in one way, taking the example of only arranging the first microswitch 301 for one-way metering, at this time, the installation frame 1 is arranged with the first electromagnet lock 801 in the direction parallel to the direction of the access of the goods, the first electromagnet lock 801 is arranged at one side of the mandrel 6 close to the first microswitch 301, the first electromagnet lock 801 is a push-pull electromagnet or a self-holding electromagnet, the first electromagnet lock comprises a shell and a slide bar 803 with one end extending out of the shell, the connection plate 202 is provided with a first annular groove 210 coinciding with the rotation track of the swing rod 2, the end of the slide bar 803 is inserted into the first annular groove 210, when the slide bar 803 is arranged at the upper end of the first annular groove 210, the swing rod 2 rotates to the horizontal position, the first sector plate 201 presses the first microswitch 301, i.e. the highest height of the goods allowed to pass through, when the swing link 2 is located at the lower end of the first annular groove 210, the swing link 2 just keeps upright or slightly inclined, so that the swing link 2 can only rotate towards one direction, i.e. only can goods be delivered, and the goods cannot enter the stock passage through the position, and the one-way locking of the goods passage is realized. If the channel needs to be completely closed, that is, when the loading or unloading is prohibited at the same time, the second electromagnet lock 802 may be disposed on one side of the core shaft 6 away from the first microswitch 301, and the connecting plate 202 is disposed with a second annular groove corresponding thereto, the second annular groove is disposed symmetrically to the first annular groove 210, and may be disposed on the same side of the connecting plate 202, or may be disposed on different sides of the connecting plate 202, and the lower ends of the first annular groove 210 and the second annular groove are located on the same horizontal line, and the upper ends are located on the same horizontal line, when the swing rod is in the upright state, the two sliding rods 803 are respectively disposed at the lower ends of the first annular groove 210 and the second annular groove, that is, when the first electromagnet lock 801 and the second electromagnet lock 802 are disposed on the same side wall of the mounting frame 1, the first annular groove 210 and the second annular groove are disposed on the same side wall of the mounting frame 1, and when the first electromagnet lock 801 and the second electromagnet lock 802 are disposed on the two opposite side walls of the mounting frame 1, the first annular groove 210 and the second annular groove are disposed on two opposite side surfaces of the connecting plate 202, and are optionally disposed on different surfaces in this embodiment, and at this time, the upper ends of the first annular groove 210 and the second annular groove may be extended to the top of the first sector plate 201 or extended to the other side by bypassing the top, so that the first annular groove 210 and the second annular groove are more convenient to manufacture. To perform the bi-directional locking, the sliding rod 803 of the first solenoid lock 801 is inserted into the first annular groove 210, and the sliding rod 803 of the second solenoid lock 802 is also inserted into the second annular groove, thereby completely closing the cargo passage. When the first micro switch 301 and the second micro switch 302 are provided at the same time, the first solenoid lock 801 may be used to lock the activation of the second micro switch 302, that is, the first sector plate 201 cannot rotate until the second micro switch 302 is pressed, and the cargo cannot pass through the direction, while the second solenoid lock 802 locks the activation of the first micro switch 301 to prohibit the cargo from passing through the direction.

The working principle of the push-pull electromagnet is described by taking the push-pull electromagnet as an example, the push-pull electromagnet generally comprises a housing, a coil is arranged in the housing, a channel is arranged in the coil, a fixed iron core is arranged at one end of the channel and is positioned at one end of the channel far away from the oscillating bar 2, the fixed iron core can be fixedly connected with the housing, a sliding rod 803 is a movable iron core which can slide in the channel, one end of the sliding rod 803 extends out of the housing, a reset spring can be arranged between the fixed iron core and the sliding rod 803, a check ring can be arranged at one side of the sliding rod 803 extending out of the housing, a reset spring is arranged between the check ring and the housing, when the coil is not electrified, the sliding rod 803 extends out under the action of the reset spring, namely, in the utility model, the sliding rod 803 is inserted into the first annular groove 210 or the second annular groove, when the coil is electrified, suction is generated between the plunger and the sliding rod 803 so that the sliding rod 803 is retracted away from the first or second annular groove 210, 803. The self-holding electromagnet is also an existing device, can be purchased on the market, and has various structures, here, a one-way self-holding electromagnet structure is taken as an example to illustrate the principle of the self-holding electromagnet, the one-way self-holding electromagnet generally comprises a shell, 1 coil is arranged in the shell, a channel is also arranged in the coil, a strong magnet is arranged in the channel, a sliding rod 803 is a movable iron core which can slide in the channel, a check ring is arranged at one side of the sliding rod 803 extending out of the shell, a return spring is arranged between the check ring and the shell, for the arrangement of the coil, if a red wire of the coil is connected with a positive electrode and a black wire of the coil is connected with a negative electrode, when the coil is electrified, the sliding rod 803 is sucked, namely the sliding rod leaves the first annular groove 210 or the second annular groove, after power failure, the sliding rod 803 still keeps a sucked state due to the existence of the strong, then a reverse voltage or current is applied to the coil, which is equivalent to that the red line is connected with the negative electrode, the black line is connected with the positive electrode, and at this time, the magnetic force of the strong magnet is counteracted or weakened, so that the sliding rod 803 smoothly extends out and is inserted into the first annular groove 210 or the second annular groove with the help of the return spring, and the locking effect of the sliding rod 803 is realized. In the embodiment, a self-holding electromagnet is selected, continuous power supply is not needed, when the sliding rod 803 needs to be extended or retracted, only the coil needs to be electrified for a short time, the power is saved when the self-holding electromagnet is used in the vending machine, and the self-holding electromagnet is more durable compared with a push-pull electromagnet.

And metering device installs the back on goods shelves, observes comparatively troublesome to the running state of electromagnet lock, consequently the utility model discloses the selection sets up a detection circuitry for push-and-pull electro-magnet or self-sustaining electro-magnet, and this detection circuitry is connected with control system for it is in to stretch out or the withdrawal state to detect slide bar 803, and feeds back control system with the result, makes things convenient for the staff to control it, and detection circuitry is current device, can directly purchase on the market, no longer gives unnecessary details here. The specific mounting of the detection circuit board is as follows: the mounting frame 1 is provided with a mounting groove 805 for mounting the first electromagnetic iron lock 801 and the second electromagnetic iron lock 802, the mounting groove 805 is arranged away from one end of the swing rod 2 and is open, the other end of the mounting groove 805 is sealed and is provided with a mounting hole 804 for the sliding rod 803 to pass through, the detection circuit board is used as a cover plate 5 and is mounted above the first electromagnetic iron lock 801 and the second electromagnetic iron lock 802, and the detection circuit board is connected with the top of the side wall of the mounting groove 805 through screws.

The above embodiments are used to explain the present invention, but not to limit the present invention, and any modifications and changes made by the present invention fall within the protection scope of the present invention.

Claims

1. The automatic metering device is characterized by comprising an installation frame (1) and an oscillating rod (2) arranged in the installation frame (1), wherein a through hole (4) is formed in the middle of the oscillating rod (2), a mandrel (6) with two ends fixedly connected with the installation frame (1) penetrates through the through hole (4), the mandrel (6) is perpendicular to the goods entering and exiting direction, torsion springs (7) sleeved outside the mandrel (6) are respectively arranged at two ends of the through hole (4), one end of each torsion spring (7) is provided with a first torsion arm, the other end of each torsion spring is provided with a second torsion arm (701), the first torsion arms are fixedly connected with the installation frame (1), the second torsion arms (701) are wound into a hook shape and are annularly arranged outside the oscillating rod (2), and the opening directions of the second torsion arms (701) of the two torsion springs (7) are oppositely arranged; the installation frame (1) is provided with first micro-gap switch (301) on the direction of perpendicular to business turn over goods, pendulum rod (2) can rotate and press first micro-gap switch (301) around dabber (6) under the striking of goods.

2. The automatic metering device of claim 1, wherein the swing rod (2) comprises a first sector plate (201), an oval connecting plate (202) and a second sector plate (203) which are sequentially connected from top to bottom, the outer arcs of the first sector plate (201) and the second sector plate (203) are oppositely arranged, and the second torsion arm (701) is annularly arranged on the outer side of the connecting plate (202).

3. The automatic metering device of claim 2, characterized in that a first electromagnet lock (801) is arranged on the mounting frame (1) in a direction parallel to the direction of entering and exiting the goods, the first electromagnet lock (801) is positioned on one side of the mandrel (6) close to the first microswitch (301), the first electromagnet lock (801) is a push-pull electromagnet or a self-holding electromagnet, the first electromagnet lock comprises a shell and a sliding rod (803) with one end extending out of the shell, a first annular groove (210) coinciding with the rotation track of the oscillating rod (2) is arranged on the connecting plate (202), and the end of the sliding rod (803) is inserted into the first annular groove (210).

4. The automatic metering device of claim 3, wherein a second electromagnet lock (802) is arranged on the mounting frame (1) in a direction parallel to the goods entering and exiting direction, the second electromagnet lock (802) is positioned on the side, away from the first microswitch (301), of the mandrel (6), the second electromagnet lock (802) is identical to the first electromagnet lock (801), a second annular groove coinciding with the rotation track of the swing rod (2) is arranged on the connecting plate (202), and a sliding rod (803) of the second electromagnet lock (802) is inserted into the second annular groove.

5. The automatic metering device of claim 4, wherein the mounting frame (1) is provided with a mounting groove (805) for mounting the first electromagnetic iron lock (801) and the second electromagnetic iron lock (802), the mounting groove (805) is far away from one end of the swing rod (2) and is open, the other end of the mounting groove is closed and is provided with a mounting hole (804) for a sliding rod (803) to pass through, a cover plate (5) is mounted above the first electromagnetic iron lock (801) and the second electromagnetic iron lock (802), the cover plate (5) is connected with the top of the side wall of the mounting groove (805) through a screw, and the cover plate (5) is a detection circuit board for detecting the position of the sliding rod.

6. The automatic metering device of claim 2, characterized in that a second microswitch (302) is arranged on the side of the mounting frame (1) opposite to the first microswitch (301), and the swing rod (2) automatically selects to press the first microswitch (301) or the second microswitch (302) according to the impact direction of the goods.

7. The automatic metering device of claim 6, wherein a first arc-shaped plate (204) and a second arc-shaped plate (205) which are parallel to the outer arc of the first sector-shaped plate (201) are symmetrically arranged on two side surfaces of the first sector-shaped plate (201), the end parts of the first arc-shaped plate (204) and the second arc-shaped plate (205) are flush with the side surfaces of the first sector-shaped plate (201), the position of the first microswitch (301) is opposite to that of the first arc-shaped plate (204), the first arc-shaped plate (204) presses the first microswitch (301) under the driving of the swing rod (2), the position of the second microswitch (302) is opposite to that of the second arc-shaped plate (205), the second arc-shaped plate (205) presses the second microswitch (302) under the driving of the swing rod (2), balancing holes (208) which penetrate through the first sector-shaped plate (201) along the thickness direction of the first sector-shaped plate (201) are symmetrically arranged above the first arc-shaped plate (204), one end, connected with the connecting plate (202), of the first fan-shaped plate (201) is symmetrically provided with a balance groove (209) perpendicular to the mandrel (6), the second fan-shaped plate (203) is provided with a first balance rod (206) on the same side as the first arc-shaped plate (204), the first balance rod (206) is located on one side, far away from the first microswitch (301), of the second fan-shaped plate (203), the second fan-shaped plate (203) is provided with a second balance rod (207) on the same side as the second arc-shaped plate (205), the second balance rod (207) is located on one side, close to the first microswitch (301), of the second fan-shaped plate (203), and the sum of the volumes of the first balance rod (206), the second balance rod (207), the balance hole (208) and the balance groove (209) is equal to the sum of the volumes of the first arc-shaped plate (204) and the second arc-shaped plate (205).

8. The automatic metering device of claim 6, wherein an elongated plate is arranged on each side of the top of the first sector plate (201), and the elongated plates are perpendicular to the first balancing bar (206).

9. The automatic metering device of any one of claims 2-8, wherein a groove (9) is formed at the top of the first sector plate (201), and a strong magnet (10) is fixedly arranged in the groove (9).

10. The automatic metering device according to claim 8, characterized in that the mounting frame (1) is provided with a rectangular shape.