A self-service packaging and labeling device for bulk weighed commodities in a supermarket

Abstract

The present invention provides a self-service packaging and labeling device for bulk weighed commodities in a supermarket, comprising: an automatic packaging mechanism for bulk commodities, a computer control terminal, a weighing mechanism, a marking and labeling mechanism, and a belt conveyor mechanism; the computer control terminal includes an operation touch screen, and the operation touch screen is placed outside the device; the weighing mechanism is directly below the automatic packaging mechanism for bulk commodities, the belt conveyor mechanism and the weighing mechanism are assembled on the same horizontal plane, the conveyor belt of the belt conveyor mechanism is slightly lower than the weighing tray of the weighing mechanism, and the marking and labeling mechanism is located at the gap position between the two conveyor belts below the belt conveyor mechanism and close to one side of the weighing mechanism. The self-service packaging and labeling device for bulk weighed commodities in a supermarket provided by the present invention has a reasonable, reliable and practical overall structure design, can simplify the shopping process when purchasing bulk commodities in a supermarket, effectively shorten the packaging and weighing time of bulk commodities, and improve the shopping efficiency.

Description

Technical Field

[0001] The present invention relates to the field of commodity packaging, and particularly to a self-service packaging and labeling device for bulk weighed commodities in a supermarket. Background Art

[0002] The meaning of commodity packaging includes two aspects: on the one hand, it refers to the container for holding commodities, usually called packaging, such as boxes, bags, baskets, barrels, bottles, etc.; on the other hand, it refers to the process of wrapping commodities, such as boxing, packing, etc.

[0003] With the continuous acceleration of the pace of life with social progress, people's requirements for the convenience and autonomy of shopping are constantly increasing. Large supermarkets have developed rapidly and are scattered in cities at all levels due to their rich and complete supply of daily necessities and self-service and convenient shopping methods. More and more people choose to purchase daily necessities in one-stop at large supermarkets and specialty stores. Among supermarket commodities, bulk weighed commodities such as fresh fruits and vegetables are the main objects of daily consumption. Such commodities often need to be packaged and weighed on-site by a dedicated person, which is contradictory to the autonomy and convenience of supermarket shopping. Preliminary research found that most shoppers believe that having a dedicated person to package and weigh fruits and vegetables and other bulk commodities makes the shopping process cumbersome and inconvenient; although some commodities have been pre-packaged, they cannot be selected, lacking autonomy. The shopping process for such bulk weighed commodities needs to be optimized. People hope to complete commodity packaging with the help of a convenient and fast self-sealing device. Research on existing self-service packaging devices found that the existing selection process and packaging and labeling devices for bulk weighed commodities mainly have the following problems: 1. The commodity packaging and weighing process is too complex and time-consuming, especially during holidays when shopping is concentrated; 2. Most existing packaging devices do not conform to the ergonomic structure; 3. Some devices have potential safety hazards; 4. The operation of existing improved equipment is difficult and the universality is low; 5. In most cases, dedicated personnel need to be set up for packaging and weighing, increasing costs; 6. Weighing and packaging by a dedicated person interferes with the autonomy of commodity selection.

[0004] In response to the above needs and existing problems, the present invention designs a convenient and fast packaging and labeling device for bulk weighed commodities, aiming to assist people in convenient shopping and optimize the shopping process through the designed self-service packaging and labeling device. At the same time, the designed device can greatly shorten the commodity packaging and weighing time, making the shopping process more autonomous. Psychologically, the device meets the pursuit of convenience and efficiency of shoppers in a fast-paced life; functionally, the device simplifies the shopping process, can effectively improve shopping efficiency, and the operation process conforms to people's usage habits.

[0005] Therefore, it is necessary to provide a self-service packaging and labeling device for bulk weighed commodities in a supermarket to solve the above technical problems. Summary of the Invention

[0006] The present invention provides a self-service packaging and labeling device for bulk weighed commodities in a supermarket, which solves the problem of assisting people to conveniently and quickly complete the packaging of bulk commodities when purchasing in the supermarket and saving the waiting time for packaging, weighing and labeling.

[0007] To solve the above technical problems, a self-service packaging and labeling device for bulk weighed commodities in a supermarket provided by the present invention includes: an automatic packaging mechanism for bulk commodities, a computer control terminal, a weighing mechanism, a marking and labeling mechanism, and a belt conveyor mechanism;

[0008] The computer control terminal includes an operation touch screen, and the operation touch screen is placed outside the device;

[0009] The weighing mechanism is located directly below the automatic packaging mechanism for bulk commodities. The belt conveyor mechanism and the weighing mechanism are assembled on the same horizontal plane. The conveyor belt of the belt conveyor mechanism is slightly lower than the weighing tray of the weighing mechanism. The marking and labeling mechanism is located at the gap position between the two conveyor belts below the belt conveyor mechanism and is close to one side of the weighing mechanism;

[0010] An outer shell is provided outside the five automatic packaging mechanisms for bulk commodities, the computer control terminal, the weighing mechanism, the marking and labeling mechanism, and the belt conveyor mechanism.

[0011] Preferably, the automatic packaging mechanism for bulk commodities is generally divided into two layers, including an upper-layer rotatable structure and a lower-layer bag encapsulation structure. The outer edge of the upper part of the rotatable structure is an external gear structure, and a circular groove for placing a plastic shopping bag is machined on the upper surface. A circular metal card is arranged in the circular groove and clamped with the inner edge of the circular groove. The bag encapsulation structure includes two sets of reciprocating swing mechanical arm mechanisms arranged oppositely. The upper set is a bag bottom / mouth welding and sealing and cutting mechanical arm mechanism, and its transmission end includes a dial with a guide post, a mechanical arm with a fork at one end, a return spring, and a mechanical arm rotation guide groove. The working end of the mechanical arm mechanism includes a plastic bag bottom welding and sealing roller, a cutting tool, and a plastic bag mouth welding and sealing roller installed at the other end of the mechanical arm. The lower set is a plastic bag mouth clamping mechanical arm mechanism, and its transmission end structure is the same as that of the welding and sealing and cutting mechanical arm mechanism. The working end includes a plastic bag mouth clamping roller.

[0012] Preferably, the weighing mechanism is attached with a pushing mechanism identical to the bag mouth clamping mechanical arm mechanism.

[0013] Preferably, the marking and labeling mechanism includes a laser inkjet printer, a face paper / base paper separation mechanism, and a base paper winding roller.

[0014] Preferably, the belt conveyor mechanism includes two conveyor belts, and a gap slightly larger than the width of the label paper is left between the two conveyor belts.

[0015] Preferably, the computer control terminal is electrically connected to the other mechanisms in the device to realize information and instruction transmission. The device needs to be manually turned on through the computer control terminal, and commodity information is selected. For the rest of the operation links, the computer control terminal issues instructions to automatically control and realize the coordinated actions of each mechanism according to the corresponding feedback signals obtained.

[0016] Preferably, fixing holes are formed in the four circumferences of the bottom of the outer shell, and threaded columns are arranged inside the fixing holes.

[0017] Preferably, a contact seat is fixedly installed at the bottom of the threaded column. Sliding grooves are formed on both sides of the fixing hole at the bottom of the outer shell, and sliders are slidably connected inside the sliding grooves.

[0018] Preferably, a connecting rod is rotatably connected to the bottom of the slider, the other end of the connecting rod is rotatably connected to the top of the contact seat, and a threaded ring is sleeved on the surface of the threaded column.

[0019] Preferably, a circular sliding groove is formed outside the fixing hole, arc-shaped sliders are slidably connected to both sides inside the circular sliding groove, and the bottom of the arc-shaped slider is fixedly installed with the top of the threaded ring.

[0020] The bulk weighing commodity self-packaging and labeling device includes a computer control terminal, a bulk commodity packaging mechanism, a weighing mechanism, a pushing mechanism, a marking and labeling mechanism, and a belt conveyor mechanism.

[0021] The bulk commodity packaging mechanism is generally divided into two layers. A continuous straight plastic shopping bag is sleeved inside the annular groove of the rotatable structure on the upper layer, and is clamped with a relatively small force by an annular metal card to ensure that during the process of loading the commodity, the plastic bag can be smoothly drawn out under the action of the gravity of the commodity and fall downward to the weighing tray. The outer side of the upper part of the upper layer structure is a gear structure, which can realize the rotation of the upper layer structure by external meshing with an external gear, aiming to tighten the bag mouth when shopping is completed.

[0022] The lower-layer bag packaging structure realizes the functions of closing the bottom of the upper empty plastic bag, closing the mouth of the lower plastic bag containing goods, and cutting and separating the upper and lower plastic bags. The specific structure includes two sets of reciprocating swing robotic arms arranged oppositely up and down. The end of the upper set of opposite robotic arms includes two sets of rollers that are heated by resistance to achieve extrusion welding and closing of plastic sealing / bottom sealing, and a disc-shaped rotatable bag mouth cutting and separating tool. When in the working position, the gap between the opposite rollers on both sides is very small, approximately the thickness of the plastic bag, to ensure tight sealing / bottom sealing; when in the working position, the cutting edges of the two knives on both sides intersect, ensuring complete cutting of the bag mouth. The other end of the robotic arm is a fork structure, which drives the robotic arm to swing reciprocally through the push rod on the rotating wheel disc and the return spring. During packaging, the two robotic arms rotate towards the center of the mechanism and stagger by a certain angle to ensure complete bag mouth encapsulation and cutting. After packaging, the robotic arms retract under the action of the spring. The end of the lower set of opposite robotic arms includes a set of plastic bag clamping rollers, and the rest of the structure is the same as that of the upper robotic arm. When in the working position, the gap between the clamping rollers of the opposite robotic arms on both sides is larger, used to restrict the rotation of the packaging bag and assist in tightening the bag mouth when the upper structure rotates.

[0023] After the packaging is sealed and separated, the packaged goods completely fall onto the weighing tray of the weighing mechanism under the action of gravity, are weighed through an electronic balance, and the weight information is transmitted to the computer control terminal of the device. The control end generates complete product information and transmits it to the labeling mechanism to complete the printing of product labels and the separation of the label backing paper and the face paper; the control terminal simultaneously activates the pushing mechanism and the belt conveyor mechanism to push out the goods, and uses the conveyor belts on both sides to convey the packaged goods through the labeling and pasting mechanism to complete label pasting, further conveys the packaged goods after labeling out of the entire device, and touches the device stop button to stop the device.

[0024] The labeling and pasting mechanism mainly includes a laser printer head, a backing paper and face paper separation mechanism, and a label backing paper winding roller. The laser printer completes information printing. The label paper passes through the backing paper and face paper separation mechanism, and the winding roller tightens and winds the backing paper to separate the label face paper and the backing paper, exposing the adhesive side of the face paper, and pastes it on the plastic bag when the packaged goods pass by, completing the labeling of the packaged goods.

[0025] Specifically, the device includes two parts: the first part is the bulk commodity packaging mechanism, and the second part is the weighing mechanism for packaged commodities, the pushing mechanism, the belt transmission mechanism, and the labeling mechanism. A continuous straight plastic shopping bag is sleeved on the inner side of the upper edge of the bulk commodity packaging mechanism part, and the edge is pressed tightly with a small force. Initially, the bottom of the plastic is closed. Subsequently, each time a commodity is packaged, the packaging mechanism seals the upper part of the plastic bag already containing the commodity below, and at the same time, welds and seals the bottom of the part above that does not contain the commodity. When a customer conducts self-service packaging and weighing of bulk weighed commodities, first put the selected commodities into the plastic bag with a closed bottom inside the packaging mechanism (it is recommended to first select the same type of commodities with a shopping basket and put them into the plastic bag of the packaging mechanism at one time). Then select the type information of the purchased commodities (the unit price of the commodities is related to the type) in the control panel of the packaging and labeling mechanism, and then press the start working button of the mechanism. The packaging mechanism starts to work and packages the commodities. The plastic bag containing the commodities is packaged with upper and lower seals and falls under the action of gravity onto the weighing mechanism below the packaging mechanism. First, it stays at the weighing station of this mechanism for several seconds to complete the weighing of the packaged commodities. The commodity weight information is transmitted to the computer control terminal to complete the calculation of commodity information and price. At the same time, the control terminal transmits the weighed commodity information to the labeling mechanism in the mechanism to complete the printing of commodity information. In the labeling mechanism, the base paper winding roller rotates, driving the labeled label paper to move upward. During the process of the base paper bending and winding towards the roller side, the pre-cut label paper and the base paper along the tear-off line are separated, exposing the adhesive side of the label face paper. While the commodity is being labeled, the control system starts the pushing mechanism to push the packaged commodity to the belt transmission mechanism. When the two conveyor belts with gaps in the middle convey the packaged commodity through the label paper, the label is pasted on the packaged commodity bag to complete the labeling of the commodity.

[0026] Compared with the related technologies, a self-service packaging and labeling device for supermarket bulk weighed commodities provided by the present invention has the following beneficial effects:

[0027] The present invention provides a self-service packaging and labeling device for supermarket bulk weighed commodities, with a reasonable, reliable and practical overall structural design, which can simplify the shopping process when purchasing supermarket bulk commodities, effectively shorten the packaging and weighing time of bulk commodities, and improve the shopping efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic structural diagram of the first embodiment of a self-service packaging and labeling device for supermarket bulk weighed commodities provided by the present invention;

[0029] Figure 2 is Figure 1 a schematic structural diagram of the side of the self-service packaging and labeling device for bulk weighed commodities shown in;

[0030] Figure 3 is Figure 1 a schematic structural diagram of the top of the self-service packaging and labeling device for bulk weighed commodities shown in;

[0031] Figure 4 is Figure 1 a schematic structural diagram of the bulk commodity packaging mechanism shown;

[0032] Figure 5 is Figure 1 a schematic structural diagram of the robotic arm of the bag encapsulation structure in the packaging mechanism shown and its movement principle;

[0033] Figure 6 is Figure 1 a schematic structural diagram of the robotic arm of the bag encapsulation structure in the packaging mechanism shown in the recycling state

[0034] Figure 7 is Figure 1 a schematic structural diagram of the marking mechanism shown;

[0035] Figure 8 is Figure 1 a structural block diagram of the computer control terminal in;

[0036] Figure 9 a schematic structural diagram of the second embodiment of a self-service packaging and labeling device for supermarket bulk weighed commodities provided by the present invention;

[0037] Figure 10 is Figure 9 a schematic structural diagram of the bottom of the chute shown;

[0038] Figure 11 a schematic structural diagram of the third embodiment of a self-service packaging and labeling device for supermarket bulk weighed commodities provided by the present invention.

[0039] Reference numerals in the figure: 1, bulk commodity packaging mechanism; 2, control terminal; 3, commodity weighing mechanism; 4, marking and labeling mechanism; 5, belt transmission mechanism; 11, upper rotatable structure of the packaging mechanism; 12, lower bag encapsulation structure of the packaging mechanism; 111, external teeth of the rotatable structure; 112, annular groove for placing plastic shopping bags; 113, annular metal card; 121, robotic arm mechanism for fusing and sealing the bottom / mouth of the bag and cutting; 122, robotic arm mechanism for clamping the mouth of the plastic bag; 1211, dial wheel with guide posts; 1212, robotic arm with a fork at one end; 1213, return spring of the robotic arm; 1214, guiding groove for the rotation of the robotic arm; 1215, upper roller for fusing and sealing the bottom of the empty plastic bag; 1216, cutting tool; 1217, lower roller for fusing and sealing the mouth of the plastic bag; 1221, roller for clamping the mouth of the plastic bag; 41, roll of self-adhesive label paper; 42, laser inkjet printer; 43, label face paper; 44, separating mechanism for face paper / base paper; 45, base paper of the label paper; 46, base paper winding roller,

[0040] 6. Fixed hole, 7. Threaded post, 8. Threaded ring, 9. Slide groove, 10. Slide block, 13. Contact seat, 14. Connecting rod, 15. Circular slide groove, 16. Arc-shaped slide block

[0041] 17. Connecting seat, 18. T-shaped groove, 19. Adapted rubber pad, 20. Mounting hole, 21. Locking bolt, 22. Nut Detailed implementation mode

[0042] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes

[0043] First embodiment

[0044] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 , where Figure 1 is a schematic structural diagram of the first embodiment of a self-service packaging and labeling device for bulk weighed commodities in a supermarket provided by the present invention; Figure 2 is Figure 1 a schematic side view of the self-service packaging and labeling device for bulk weighed commodities shown; Figure 3 is Figure 1 a schematic top view of the self-service packaging and labeling device for bulk weighed commodities shown; Figure 4 is Figure 1 a schematic structural diagram of the bulk commodity packaging mechanism shown; Figure 5 is Figure 1 a schematic structural diagram of the mechanical arm and its movement principle of the bag encapsulation structure in the packaging mechanism shown; Figure 6 is Figure 1 a schematic diagram of the recovery state of the mechanical arm of the bag encapsulation structure in the packaging mechanism shown Figure 7 is Figure 1 a schematic structural diagram of the marking mechanism shown; Figure 8 is Figure 1 a block diagram of the computer control terminal in. A self-service packaging and labeling device for bulk weighed commodities in a supermarket includes: a bulk commodity automatic packaging mechanism 1, a computer control terminal 2, a weighing mechanism 3, a marking and labeling mechanism 4, and a belt conveyor mechanism 5;

[0045] The computer control terminal 2 includes an operation touch screen, and the operation touch screen is placed outside the device;

[0046] The weighing mechanism 3 is located directly below the automatic bulk commodity packaging mechanism 1. The belt conveyor mechanism 5 and the weighing mechanism 3 are assembled on the same horizontal plane. The conveyor belt of the belt conveyor mechanism 5 is slightly lower than the weighing tray of the weighing mechanism 3. The marking and labeling mechanism 4 is located at the gap between the two conveyor belts below the belt conveyor mechanism 5 and is close to one side of the weighing mechanism 3;

[0047] A housing is provided on the outside of the five automatic bulk commodity packaging mechanisms 1, the computer control terminal 2, the weighing mechanism 3, the marking and labeling mechanism 4, and the belt conveyor mechanism 5.

[0048] The automatic bulk commodity packaging mechanism 1 is generally divided into two layers, including an upper layer rotatable structure 11 and a lower layer bag encapsulation structure 12. The outer edge of the upper part of the rotatable structure 11 is an external gear structure, and the upper surface is processed with an annular groove 112 for placing plastic shopping bags. An annular metal card 113 is arranged in the annular groove 112 and is clamped with the inner edge of the annular groove. The bag encapsulation structure 12 includes two groups of reciprocating swing robotic arm mechanisms arranged oppositely. The upper group is the bag bottom / mouth welding and sealing and cutting robotic arm mechanism 121, and its transmission end includes a dial 1211 with a guide post, a robotic arm 1212 with a fork at one end, a return spring 1213, and a robotic arm rotation guiding groove 1214. The working end of the robotic arm mechanism 121 includes a plastic bag bottom welding and sealing roller 1215, a cutting tool 1216, and a plastic bag mouth welding and sealing roller 1217 installed at the other end of the robotic arm. The lower group is the plastic bag mouth clamping robotic arm mechanism 122, and its transmission end structure is the same as that of the welding and sealing and cutting robotic arm mechanism 121. The working end includes a plastic bag mouth clamping roller 1221.

[0049] The weighing mechanism 3 is attached with a pushing mechanism identical to the bag mouth clamping robotic arm mechanism 122.

[0050] The marking and labeling mechanism 4 includes a laser inkjet printer 42, a face paper / base paper separation mechanism 44, and a base paper winding roller 46.

[0051] The belt conveyor mechanism 5 includes two conveyor belts, and a gap slightly larger than the width of the label paper is left between the two conveyor belts.

[0052] The computer control terminal 2 is electrically connected to the other mechanisms in the device to realize information and instruction transmission. The device needs to be manually turned on through the computer control terminal 2, and commodity information is selected. For the rest of the operating links, the computer control terminal 2 issues instructions to automatically control and realize the coordinated actions of each mechanism according to the corresponding feedback signals obtained.

[0053] The computer control terminal 2 is a small industrial control computer, including an input / output terminal composed of an external touch display screen, a microprocessor, and an electrical logic control unit composed of a programmable controller. The microprocessor includes a data storage and processing unit.

[0054] The working principle of a self-service packaging and labeling device for bulk weighed commodities in a supermarket provided by the present invention is as follows:

[0055] The automatic packaging mechanism 1 for bulk commodities is used to tighten the plastic bags for shopping of commodities, weld and seal the bottom, and separate the bottom and the mouth of the bag; the weighing mechanism 3 is used to weigh the packaged commodities and transmit the weight of the commodities to the computer terminal; the pushing mechanism, with the same structure as the reciprocating swing robotic arm structure in the packaging mechanism 1, is used to push the weighed and packaged commodities to the belt conveyor mechanism; the labeling mechanism 4 is used to complete the printing of commodity information labels, and separate the label face paper and the base paper after labeling; the belt conveyor mechanism 5 is used to convey the packaged commodities through the labeling mechanism to complete automatic labeling, further send the commodities out of the whole device and touch the stop button to stop the device; the computer control terminal 2 is electrically connected to the packaging mechanism, the weighing mechanism, the pushing mechanism, and the belt conveyor mechanism respectively, so as to select the commodity type, generate the information of the weighed commodities, control the start of the device, and coordinate the work of the packaging mechanism, the weighing mechanism, the pushing mechanism, and the belt conveyor mechanism.

[0056] Further, the packaging mechanism 1 includes an upper-layer rotating structure 11. The outer tooth structure 111 on its upper edge is used to achieve gear meshing transmission to drive the rotation of this layer of structure. The upper surface of the rotating structure is processed with an annular groove 112 for placing plastic shopping bags, which is used to stack and place straight-barrel plastic shopping bags. One end of the plastic bag is sleeved inside the mechanism and clamped tightly with the edge of the structure by an annular metal clip 113 with a small force. The rotation of the rotating structure can complete the tightening of the bag mouth of the plastic bag containing goods; the packaging mechanism also includes a lower-layer bag encapsulation structure 12, which is mainly composed of two sets of reciprocating swing robotic arm mechanisms arranged oppositely. The upper set of robotic arm mechanisms 121 for welding and cutting the bottom / bag mouth of the bag. The transmission end thereof includes a dial 1211 with a guide post and a robotic arm 1212 with a fork at one end. During operation, the dial 1211 rotates, and the guide post on it enters the fork structure of the robotic arm 1212, pushing the robotic arm to swing towards the center and passing a certain angle to ensure complete bag mouth encapsulation and cutting. After the work is completed, the guide post exits the fork structure, and the robotic arm swings back to the initial waiting position under the elastic return of the return spring 1213, and the entire work cycle ends. Preferably, the guide post on the robotic arm moves along the guide groove 1214 to ensure the smooth swing process and reliable operation of the robotic arm; the working end of the robotic arm mechanism 121 includes an upper empty plastic bag bottom welding and closing roller 1215, a cutting tool 1216, and a lower plastic bag bag mouth welding and closing roller 1217. The upper empty plastic bag bottom welding and closing roller 1215 and the lower plastic bag bag mouth welding and closing roller 1217 have the same structure and are heated by the principle of resistance heating during operation. When the robotic arm swings to the working position, the two opposite rollers roll over the bottom or bag mouth with a small gap to achieve hot melt sealing of the bag mouth and bottom. The cutting tool 1216 is also heated by resistance heating. When swinging to the working position, the cutting edges on both sides overlap with a very small gap to cut the plastic bag, realizing the cutting separation of the bottom of the upper plastic bag and the bag mouth of the lower plastic bag; the lower set of plastic bag bag mouth clamping robotic arm mechanisms 122 is used to cooperate with the rotating structure to limit the rotation of the lower plastic bag containing goods during the process of tightening the bag mouth. The transmission end structure and movement principle thereof are the same as those of the robotic arm mechanism 121. When in the working position, the two robotic arms face each other. The working end thereof includes plastic bag bag mouth clamping rollers 1221 with a large gap left when in the working position. The clamping rollers are heated by resistance heating to perform secondary welding and closing of the bag mouth to ensure reliable packaging.

[0057] Further, the weighing mechanism 3 is located below the packaging mechanism 1. After the goods are packaged, they fall onto the weighing tray of the weighing mechanism 3, stay for several seconds to complete the weighing of the packaged goods, and transmit the weight information of the goods to the computer control terminal 2 to complete the calculation of the goods information and price; the computer control terminal 2 transmits the weighed goods information to the labeling and tagging mechanism 4 of the device.

[0058] Further, the laser coding printer 42 in the labeling mechanism 4 prints commodity information on the front of the label face paper 43. Subsequently, the backing paper winding roller 46 rotates to pull the labeled label paper upward. After passing through the face paper / backing paper separation mechanism 44, the backing paper 45 is bent and wound towards the roller side. The face paper pre-cut along the tearing line is separated from the backing paper under the action of its own stiffness and the edge of the separation mechanism, exposing the adhesive side of the label face paper 43.

[0059] Further, while the commodity is being labeled, the control system activates the pushing mechanism attached to the weighing mechanism 3. This pushing mechanism is located under the packaging mechanism 1 and has the same structure as the reciprocating swing robotic arm structure 122 in the packaging mechanism, pushing the packaged commodity onto the belt conveyor mechanism 5.

[0060] Further, the belt conveyor mechanism 5 includes two conveyor belts with a gap in the middle and rollers that drive the conveyor belts. During the process of the conveyor belts transporting the packaged commodity, the commodity first passes through the label face paper 43 that has been printed and has its adhesive side exposed in the gap between the two conveyor belts. Under the action of relative movement, the label face paper 43 is pasted onto the commodity packaging bag, completing automatic labeling. Further, the conveyor belts send the commodity out of the entire device and touch the stop button at the end of the device, causing the device to stop and completing a process of self-service packaging, weighing, labeling of supermarket bulk commodities.

[0061] Compared with the related technology, a self-service packaging and labeling device for supermarket bulk weighed commodities provided by the present invention has the following beneficial effects:

[0062] The overall structure is designed reasonably, reliably, and has practical functions. It can simplify the shopping process when purchasing supermarket bulk commodities, effectively shorten the packaging and weighing time of bulk commodities, and improve the shopping efficiency.

[0063] Second Embodiment

[0064] Please refer to Figure 9 , Figure 10 , based on a self-service packaging and labeling device for supermarket bulk weighed commodities provided in the first embodiment of the present application, the second embodiment of the present application proposes another self-service packaging and labeling device for supermarket bulk weighed commodities. The second embodiment is merely a preferred manner of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0065] Specifically, the difference of a self-service packaging and labeling device for supermarket bulk weighed commodities provided in the second embodiment of the present application is that, for a self-service packaging and labeling device for supermarket bulk weighed commodities, fixing holes 6 are respectively opened at the four circumferences of the bottom of the outer shell, and threaded columns 7 are arranged inside the fixing holes 6.

[0066] A contact seat 13 is fixedly installed at the bottom of the threaded post 7. Chute grooves 9 are formed on both sides of the fixing hole 6 at the bottom of the housing. A slider 10 is slidably connected inside the chute groove 9.

[0067] By using the mutual cooperation among the slider 10, the chute groove 9, and the connecting rod 14, a certain amount of the force borne by the threaded post 7 can be shared, so the working burden between the threaded post 7 and the threaded ring 8 can be reduced.

[0068] The bottom of the slider 10 is rotatably connected to a connecting rod 14. The other end of the connecting rod 14 is rotatably connected to the top of the contact seat 13. A threaded ring 8 is sleeved on the surface of the threaded post 7.

[0069] A circular chute groove 15 is formed outside the fixing hole 6. Arc-shaped sliders 16 are slidably connected to both sides inside the circular chute groove 15. The bottom of the arc-shaped slider 16 is fixedly installed with the top of the threaded ring 8.

[0070] By using the cooperation between the arc-shaped slider 16 and the circular chute groove 15, the threaded ring 8 can only rotate and cannot change to other states, so that the threaded post 7 can extend or retract into the fixing hole 6.

[0071] The working principle of a self-service packaging and labeling device for bulk weighed goods in a supermarket provided by the present invention is as follows:

[0072] When the overall device is placed on the workbench in an unstable and non-horizontal state, the threaded ring 8 at the corresponding position can be rotated according to the actual situation. Then, the rotation of the threaded ring 8 drives the arc-shaped slider 16, causing the arc-shaped slider 16 to slide inside the circular chute groove 15. Since the threaded ring 8 can only rotate, the rotation of the threaded ring 8 enables the threaded post 7 to extend outward inside its fixing hole 6 and the threaded ring 8. The threaded post 7 further pushes the contact seat 13 downward when it extends outward. The downward movement of the contact seat 13 drives the connecting rod 14 to move synchronously. Then, the slider 10 is pulled by the angular change generated by the movement of the connecting rod 14, causing the slider 10 to move from the outside to the inside inside the chute groove 9 until the overall structure is adjusted to a suitable state.

[0073] Compared with the related technology, a self-service packaging and labeling device for bulk weighed goods in a supermarket provided by the present invention has the following beneficial effects:

[0074] Through the mutual cooperation among structures such as the fixing hole 6, the threaded post 7, the threaded ring 8, the chute groove 9, the slider 10, the contact seat 13, the connecting rod 14, the circular chute groove 15, and the arc-shaped slider 16, during the use of the device, it can be adjusted according to the horizontal condition of its placement position, so that it is in a stable working state and will not shake during use.

[0075] Third Embodiment

[0076] Please refer to Figure 11 , based on a self - packaging and labeling device for unpackaged weighed goods in a supermarket provided in the first embodiment of the present application, the third embodiment of the present application proposes another self - packaging and labeling device for unpackaged weighed goods in a supermarket. The third embodiment is merely a preferred manner of the first embodiment, and the implementation of the third embodiment will not affect the independent implementation of the first embodiment.

[0077] Specifically, the difference of a self - packaging and labeling device for unpackaged weighed goods in a supermarket provided in the third embodiment of the present application is that, for a self - packaging and labeling device for unpackaged weighed goods in a supermarket, a connecting seat 17 is fixedly installed at the bottom of the threaded column 7. A T - shaped groove 18 is opened at the bottom inside the connecting seat 17. An adaptive rubber pad 19 is arranged inside the T - shaped groove 18. Installation holes 20 are opened on both sides inside the connecting seat 17 and at the top of the T - shaped groove 18. A locking bolt 21 is arranged inside the installation hole 20. A nut 22 is sleeved on the surface of the locking bolt 21, and the bottom of the nut 22 is fixedly installed on the top of the connecting seat 17.

[0078] By using the cooperation between the nut 22 and the locking bolt 21, the adaptive rubber pad 19 can be stably fixed inside the T - shaped groove 18 to play a role.

[0079] The working principle of a self - packaging and labeling device for unpackaged weighed goods in a supermarket provided by the present invention is as follows:

[0080] By installing the adaptive rubber pad 19 in the connecting seat 17, when the whole device is placed on the workbench for work, it can have a strong contact friction force, realize stable work and will not easily shift in position.

[0081] When it is necessary to remove the adaptive rubber pad 19, the locking bolts 21 on both sides can be rotated in sequence, while the nut 22 remains stationary. Thus, the locking bolts 21 move upward inside the nut 22 and at the same time inside the installation holes 20, so that the adaptive rubber pad 19 loses its restriction. Then, the adaptive rubber pad 19 can be pushed in the opening direction of the T - shaped groove 18 to remove it.

[0082] Compared with the related technology, a self - packaging and labeling device for unpackaged weighed goods in a supermarket provided by the present invention has the following beneficial effects:

[0083] Through the mutual cooperation among structures such as the connecting seat 17, the T-shaped groove 18, the adapter rubber pad 19, the mounting hole 20, the locking bolt 21, the nut 22, etc., the overall structure has strong friction when contacting the workbench, and the adapter rubber pad 19 is very easy to install and disassemble, so it can be selected and used according to the actual situation.

[0084] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A self - packaging and labeling device for unpackaged and weighed commodities in a supermarket, characterized in that, Including: An automatic packaging mechanism for bulk goods, a computer control terminal, a weighing mechanism, a marking and labeling mechanism, and a belt conveyor mechanism; The computer control terminal includes an operation touch screen, and the operation touch screen is placed outside the device; The weighing mechanism is located directly below the automatic packaging mechanism for bulk goods. The belt conveyor mechanism and the weighing mechanism are assembled on the same horizontal plane. The conveyor belt of the belt conveyor mechanism is slightly lower than the weighing tray of the weighing mechanism. The marking and labeling mechanism is located at the gap between the two conveyor belts below the belt conveyor mechanism and is close to one side of the weighing mechanism; There is a housing outside the five automatic packaging mechanisms for bulk goods, the computer control terminal, the weighing mechanism, the marking and labeling mechanism, and the belt conveyor mechanism. The automatic packaging mechanism for bulk goods is generally divided into two layers, including an upper-layer rotatable structure and a lower-layer bag encapsulation structure. The outer edge of the upper part of the upper-layer rotatable structure is an external gear structure, and a circular groove for placing plastic shopping bags is processed on the upper surface. An annular metal card is placed in the circular groove and clamped with the inner edge of the ring groove. The lower-layer bag encapsulation structure includes two sets of reciprocating swing robotic arm mechanisms arranged oppositely. The upper set is a bag bottom / mouth welding and sealing and cutting robotic arm mechanism, and its transmission end includes a dial wheel with a guide post, a robotic arm with a fork at one end, a return spring, and a robotic arm rotation guiding groove. The working end of the robotic arm mechanism includes a plastic bag bottom welding and sealing roller, a cutting tool, and a plastic bag mouth welding and sealing roller installed at the other end of the robotic arm. The lower set is a plastic bag mouth clamping robotic arm mechanism, and its transmission end structure is the same as that of the welding and sealing and cutting robotic arm mechanism. The working end includes a plastic bag mouth clamping roller. Fixing holes are opened at the four corners of the bottom of the housing, and threaded posts are arranged inside the fixing holes; a contact seat is fixedly installed at the bottom of the threaded post. Sliding grooves are opened on both sides of the bottom of the housing and inside the fixing holes, and sliders are slidably connected inside the sliding grooves; the bottom of the slider is rotatably connected to a connecting rod, and the other end of the connecting rod is rotatably connected to the top of the contact seat. A threaded ring is sleeved on the surface of the threaded post; a circular sliding groove is opened outside the fixing hole, and arc-shaped sliders are slidably connected to both sides inside the circular sliding groove, and the bottom of the arc-shaped slider is fixedly installed with the top of the threaded ring.

2. The self - packaging and labeling device for bulk - weighed commodities in a supermarket according to claim 1, wherein The weighing mechanism is attached with a pushing mechanism identical to the bag mouth clamping robotic arm mechanism.

3. The self-service packaging and labeling device for unpackaged and weighed commodities in a supermarket according to claim 1, wherein The marking and labeling mechanism includes a laser inkjet printer, a face paper / base paper separation mechanism, and a base paper winding roller.

4. A self-packaging and labeling device for unpackaged weighed commodities in a supermarket according to claim 1, characterized in that, The belt conveyor mechanism includes two conveyor belts, and a gap slightly larger than the width of the label paper is left between the two conveyor belts.

5. A self-packaging and labeling device for bulk weighed goods in a supermarket according to claim 1, characterized in that, The computer control terminal is electrically connected to the other mechanisms in the device to realize information and instruction transmission. The device needs to be manually turned on through the computer control terminal, and commodity information is selected. For the rest of the operating links, the computer control terminal issues instructions to automatically control and realize the coordinated actions of each mechanism according to the corresponding feedback signals obtained.

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