A bag feeding automatic packaging apparatus

Abstract

The application provides a kind of automatic packaging equipment for bag, including bag placing device, bag feeding device, clamping device, bag opening device, filling device and sealing device in turn;In initial state, bag feeding support rod in bag feeding device is vertically downward, and the adsorption plate at its end can contact with packaging bag placed on the loading platform through the first opening on the fixed table, and fix the packaging bag through adsorption force, drive device drives first movable rod and second movable rod reciprocating in opposite directions respectively, to drive bag feeding support rod to overturn up and down, and then transfer packaging bag from bag placing device to clamping device, complete the bag feeding process of packaging bag.This application adopts continuous operation top bag taking mode, which can improve packaging efficiency and reduce labor cost;At the same time, the top bag taking mode has lower requirement for packaging bag material, can adapt to different packaging bag materials by adjusting the adsorption force of adsorption plate, and the top bag taking mode is not affected by external force, so it is convenient to take bag and has low empty bag rate.

Description

Technical Field

[0001] This invention relates to the field of food packaging, and more particularly to an automatic bag-feeding packaging device. Background Technology

[0002] Food packaging protects food from biological, chemical, and physical damage during its journey from the factory to the consumer; it also enhances the food's appearance, attracting consumer attention and possessing value beyond material cost. Therefore, the food packaging process is an integral part of the food manufacturing system.

[0003] Food packaging is categorized by packaging method into bagged, bottled, and canned products. Currently, bagged foods can be packaged automatically using pre-packaged bag machines. Workers simply place the packaging bag into the bag-grabbing unit of the machine, and the gripping device will automatically pick up the bag and perform subsequent operations such as opening, filling, and sealing.

[0004] Existing bag-feeding machines typically employ two bag-feeding methods: bottom-pull bag feeding and conveyor belt bag feeding. The bottom-pull method involves stacking several bags on a tray with a bag outlet, allowing a gripping device to pick them up. This method allows for convenient top-down replenishment, but it is more demanding on the bags; overly soft bags are prone to slipping out of the outlet. Furthermore, the weight of the bags above increases the difficulty of picking up the bags below, increasing the risk of failure. Conveyor belt bag feeding, on the other hand, requires workers to place each bag onto the conveyor belt individually, resulting in high labor costs and low efficiency. Summary of the Invention

[0005] This invention addresses the shortcomings of existing technologies by providing a bag-type automatic packaging device to solve the problems in the background art.

[0006] This invention is achieved through the following technical solution: providing an automatic bag-feeding packaging device, comprising a bag placing device, a bag feeding device, a clamping device, a bag opening device, a filling device, and a sealing device arranged sequentially; wherein, the bag feeding device includes a positioning plate arranged opposite to each other, and a first hinge shaft and a second hinge shaft are fixedly fixed from top to bottom on the inner side of the positioning plate; the two ends of the first hinge shaft are respectively connected to a first driving device and a first movable rod, and the two ends of the second hinge shaft are respectively connected to a second driving device and a second movable rod; the other end of the first movable rod is fixedly connected to a first connecting shaft, and the other end of the second movable rod is fixedly connected to a second connecting shaft; the first connecting shaft and the second connecting shaft are respectively sleeved with a bag feeding support rod, and an adsorption plate is provided at the free end of the bag feeding support rod; The bag placement device includes a fixed platform. The upper surface of the fixed platform is provided with a first opening that matches the adsorption plate. Above the first opening, there is an adjustable-length bag scraper. A negative pressure suction cup is fixed on the upper surface of the bag scraper. A second opening is provided through the side of the fixed platform. A platform for placing packaging bags is provided in the second opening.

[0007] Preferably, the platform includes a base plate, two side plates, a loading plate movably connected between the two side plates, and at least two support members located between the base plate and the loading plate. Each support member includes a support column with a longitudinal groove, a limiting platform and a support rod that match the longitudinal groove. The limiting platform is fixed to the lower middle part of the longitudinal groove. The support rod includes a sliding part with a width matching the longitudinal groove and a telescopic part with a width smaller than the longitudinal groove. The telescopic part includes a free end that passes through the limiting platform. The free end is provided with a limiting block that matches the limiting platform. A spring is also sleeved on the outside of the telescopic part located between the sliding part and the limiting platform.

[0008] Preferably, the second opening is provided with a conveying device and at least two platforms spaced apart on the conveying device. The conveying device includes a first roller, a second roller, a conveyor belt wound around the outside of the first roller and the second roller, a third drive device connected to the first roller and the second roller, and a controller electrically connected to the third drive device.

[0009] Preferably, the bag scraping plate includes a fixed plate and a movable plate. The fixed plate includes a fixed base plate and two fixed side plates fixedly connected to the fixed base plate. The movable plate is located between the two fixed side plates. Gears that mesh with the movable plate are provided on both sides of the movable plate. A fourth driving device is fixedly connected to the center of the gears. The fourth driving device is electrically connected to the controller.

[0010] Preferably, the automatic bag-feeding packaging equipment further includes a first photoelectric switch electrically connected to the controller, wherein the transmitting end of the first photoelectric switch is disposed on the upper surface of the platform, and the receiving end of the first photoelectric switch is disposed on the lower surface of the bag scraper.

[0011] Preferably, the automatic bag-feeding packaging equipment further includes a second photoelectric switch electrically connected to the controller. The transmitting end of the second photoelectric switch is disposed on the upper surface of the platform, inside the transmitting end of the first photoelectric switch, and the receiving end of the second photoelectric switch is disposed on the lower surface of the bag scraper plate near the first opening.

[0012] Preferably, the sealing device includes a first sealing block and a second sealing block disposed opposite to each other. A first fixing member is fixed to the upper surface of the first sealing block, and one end of a first linkage plate is fixed to the first fixing member. An auxiliary sealing block is fixed to the upper surface of the second sealing block. A second fixing member is fixed to the side of the auxiliary sealing block facing the first sealing block, and one end of a second linkage plate is fixed to the second fixing member. The other end of the first linkage plate and the other end of the second linkage plate are fixedly connected. The center position of the second linkage plate is hinged to a protective plate located above the first sealing block via a hinge shaft. A drive shaft is fixed to the side of the first sealing block away from the second sealing block.

[0013] The beneficial effects of this application are as follows: In its initial state, the bag-feeding support rod in the bag-feeding device is vertically downward. Its end, the suction plate, contacts the packaging bag placed on the platform through a first opening on the fixed platform, and fixes the bag using suction force. The first and second driving devices respectively drive the first and second movable rods to reciprocate in opposite directions, thereby causing the bag-feeding support rod to flip up and down, thus transferring the packaging bag from the bag-feeding device to the clamping device, completing the bag-feeding process. This application adopts a continuous top-loading method, which can improve packaging efficiency and reduce labor costs. Simultaneously, the top-loading method has lower requirements for packaging bag material; the suction force of the suction plate can be adjusted to adapt to different packaging bag materials. Furthermore, the top-loading method is unaffected by external forces, making bag retrieval convenient and resulting in a low empty bag rate. In addition, this application also features a unique scraping plate, which can appropriately block the packaging bags adsorbed by the bag-feeding device, scraping off any stuck bags. Furthermore, the negative pressure suction cup on the upper surface of the scraping plate can further apply suction force to the packaging bags on the suction plate, preventing multiple packaging bags from sticking together when reaching the clamping device, thus ensuring smooth subsequent packaging. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of an automatic bag-type packaging device provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a bag-feeding device in the bag-taking state according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of a bag feeding device in the bag feeding state according to an embodiment of the present invention; Figure 4This is a schematic diagram of a bag-placement device provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of a stage provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of a support member provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the internal structure of a bag-placement device provided in an embodiment of the present invention; Figure 8 A connection diagram of a controller provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of the structure of a bag scraper provided in an embodiment of the present invention; Figure 10 A schematic diagram of the position of a photoelectric switch provided in an embodiment of the present invention; Figure 11 This is a schematic diagram of a sealing device provided in an embodiment of the present invention; Figure 12 This is a schematic diagram illustrating the usage state of a sealing device according to an embodiment of the present invention; Figure 13 This is a schematic diagram of the internal structure of a sealing device provided in an embodiment of the present invention.

[0016] As shown in the figure: 1-Bag placement device, 11-Fixed platform, 111-First opening, 112-Second opening, 12-Bag scraper, 121-Negative pressure suction cup, 122-Fixed plate, 123-Modible plate, 124-Gear, 125-Fourth drive device, 13-Platform, 131-Base plate, 132-Side plate, 133-Support component, 134-Platform, 1221-Fixed base plate, 1222-Fixed side plate, 1331-Support column, 1332-Longitudinal slide, 1333-Limiting platform, 1334-Support rod, 1335-Spring, 1336-Limiting block, 13341-Sliding part, 13342-Telescopic part, 141-First roller, 142-Second roller, 143-Controller, 144-Conveyor belt, 145-Third drive device; 2-Bag feeding device, 21-Positioning plate, 211-First hinge shaft, 212-Second hinge shaft, 22-First movable rod, 23-First connecting shaft, 24-Second movable rod, 25-Second connecting shaft, 26-Bag feeding support rod, 27-Adsorption plate, 28-First driving device, 29-Second driving device; 3-Clamping device, 4-Bag opening device, 5-Filling device; 6-Sealing device, 61-First sealing block, 62-Second sealing block, 63-Auxiliary sealing block, 64-First linkage plate, 65-Second linkage plate, 66-Hinge shaft, 67-Protective plate, 68-Drive shaft, 611-First fixing member, 631-Second fixing member; 7-First photoelectric switch, 71-Transmitter of the first photoelectric switch, 72-Receiver of the first photoelectric switch; 8-Second photoelectric switch, 81-Transmitter of the second photoelectric switch, 82-Receiver of the second photoelectric switch. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this invention.

[0018] To address the shortcomings of existing technologies, this solution provides an automatic bag-type packaging device. Please refer to it. Figure 1 The image shown is a structural schematic diagram of an automatic bag-packing device provided in an embodiment of the present invention. Figure 1 As can be seen, this equipment includes, in sequence, a bag placement device 1, a bag feeding device 2, a clamping device 3, a bag opening device 4, a filling device 5, and a sealing device 6. Among them, the bag placement device 1 is a storage device for packaging bags. The bag feeding device 2 takes out the packaging bags one by one from the bag placement device 1 and places them in the clamping device 3 for fixation. The clamping device 3 rotates to the bag opening device 4. The bag opening device 4 uses suction to open the packaging bag mouth, and then moves to the filling device 5 to add materials. Finally, the bag is sealed by the sealing device 6, thus realizing the fully automatic packaging of food.

[0019] Please refer to Figure 2 and Figure 3 The diagram shows a structural schematic of a bag-feeding device in the bag-taking state according to an embodiment of the present invention, and a structural schematic of a bag-feeding device in the bag-feeding state according to an embodiment of the present invention. Figure 2 and Figure 3As can be seen, the bag-feeding device 2 includes a positioning plate 21 arranged opposite to each other. A first hinge shaft 211 and a second hinge shaft 212 are fixed sequentially from top to bottom on the inner side of the positioning plate 21. The two ends of the first hinge shaft 211 are respectively connected to a first driving device 28 and a first movable rod 22. The two ends of the second hinge shaft 212 are respectively connected to a second driving device 29 and a second movable rod 24. The other end of the first movable rod 22 is fixedly connected to a first connecting shaft 23, and the other end of the second movable rod 24 is fixedly connected to a second connecting shaft 25. The first connecting shaft 23 and the second connecting shaft 25 are respectively sleeved with a bag-feeding support rod 26. An adsorption plate 27 is provided at the free end of the bag-feeding support rod 26. In this embodiment, the adsorption plate 27 can be designed as a hollow structure with suction channels, generating stable and continuous suction by connecting a negative pressure device. Of course, in other embodiments of this application, suction can also be obtained by covering the bottom surface of the adsorption plate 27 with an adhesive substance. This solution does not limit the specific structure and implementation of the adsorption plate 27, as long as it generates stable suction.

[0020] In the bag-feeding device 2, the bag-feeding support rod 26 is vertically downward, and the adsorption surface of the adsorption plate 27 is located at the lowest end of the bag-feeding support rod 26. When the adsorption plate 27 adsorbs the packaging bag inside the bag-placement device 1, the first driving device 28 drives the first movable rod 22 to move counterclockwise, and the second driving device 29 drives the second movable rod 24 to move clockwise, causing the bag-feeding support rod 26 to rotate clockwise until it is in a nearly horizontal position. This moves the packaging bag adsorbed by the adsorption plate 27 to the clamping device 3, completing the bag-feeding process. After the packaging bag is received by the clamping device 3, the first driving device 28 and the second driving device 29 drive in opposite directions, thereby causing the bag-feeding support rod 26 to return to the bag-feeding state, and this process repeats.

[0021] Please refer to Figure 4 The image shown is a structural schematic diagram of a bag-placement device provided in an embodiment of the present invention. Figure 4 As can be seen, the bag placing device 1 provided in this application, which is matched with the bag feeding device 2, includes a fixed platform 11. The upper surface of the fixed platform 11 is provided with a first opening 111 that matches the adsorption plate 27. An adjustable-length scraping plate 12 is provided above the first opening 111. A negative pressure suction cup 121 is fixed on the upper surface of the scraping plate 12. A second opening 112 is provided through the side of the fixed platform 11. A platform 13 for placing packaging bags is provided in the second opening 112.

[0022] In this embodiment, the stage 13 is placed directly below the first opening 111. A packaging bag is placed on the stage 13, and the suction plate 27 passes through the first opening 111 to suction the packaging bag from the stage 13 and deliver it to the clamping device 3. After suctioning the packaging bag, the suction plate 27 moves upwards, passing over the scraper plate 12 above the first opening 111. The scraper plate 12 provides appropriate obstruction to the packaging bag, scraping away multiple accidentally stuck packaging bags, leaving only the packaging bag in direct contact with the suction plate 27. The scraper plate 12 is designed with an adjustable length, allowing its length to be adjusted according to the size of the packaging bag. This ensures that the distance between two oppositely positioned scraper plates 12 is slightly less than the width of the packaging bag, allowing the scraper plate 12 to act precisely on the edge of the packaging bag, preventing excessive force that could cause the target packaging bag to detach from the suction plate 27. A negative pressure suction cup 121 is also provided on the upper surface of the scraper plate 12, which can generate suction through a connected suction device. By adjusting the configuration, quantity, power, and other parameters of the suction device, the suction force of the negative pressure suction cup 121 is made less than that of the suction force of the adsorption plate 27. If the bag scraper 12 fails to scrape off the stuck packaging bag, the negative pressure suction cup 121 can be used to further adsorb the stuck packaging bag, ensuring that the adsorption plate 27 can successfully adsorb a single target packaging bag.

[0023] To ensure that the adsorption plate 27 can successfully adsorb the packaging bag, the stage 13 in the preferred embodiment of this application has a unique design. Please refer to... Figure 5 and Figure 6 The figures shown are schematic diagrams of a platform and a support member provided in an embodiment of the present invention. Figure 5 and Figure 6 As can be seen, the platform 13 includes a base plate 131, two side plates 132, a loading plate 134 movably connected between the two side plates 132, and at least two support members 133 located between the base plate 131 and the loading plate 134. Each support member 133 includes a support column 1331 with a longitudinal groove 1332, a limiting platform 1333 matching the longitudinal groove 1332, and a support rod 1334. The limiting platform 1333 is fixed to the lower middle part of the longitudinal groove 1332. The support rod 1334 includes, from top to bottom, a sliding part 13341 with a width matching the longitudinal groove 1332 and a telescopic part 13342 with a width smaller than the longitudinal groove 1332. The telescopic part 13342 includes a free end that passes through the limiting platform 1333. The free end is provided with a limiting block 1336 that matches the limiting platform 1333. A spring 1335 is also sleeved on the outside of the telescopic part 13342 located between the sliding part 13341 and the limiting platform 1333.

[0024] When the platform 13 is idle, the upper surface of the platform 134 is flush with the top of the side panel 132. When a packaging bag is placed on the platform 134, the weight of the bag is transmitted from the platform 134 to the support 133. The spring 1335 is compressed, causing the platform 134 to drop, making the top layer of the packaging bag flush with the top of the side panel 132. As the packaging bag is continuously removed, its height decreases, and its weight gradually decreases. The elastic force of the spring 1335 causes the platform 134 to rise, thus raising the top layer of the packaging bag. By designing the elastic force of the spring 1335, the top layer of the packaging bag can always be flush with the top of the side panel 132. In the preferred embodiment of this application, the height of the side plate 132 is slightly less than the height of the fixed platform 11. This ensures that the height of the packaging bag is always slightly less than the height of the fixed platform 11, eliminating the need for the suction plate 27 to penetrate deep into the fixed platform 11 for gripping operations. This improves bag feeding efficiency and ensures consistent operation of the bag feeding device 2 with a low error rate. The limiting block 1336 is a detachable structure, allowing for the replacement of springs 1335 with different elasticities depending on the material and weight of the packaging bag.

[0025] Furthermore, in a preferred embodiment of this application, to improve work efficiency, an automatic bag-changing device can be provided to automatically change the packaging bags, avoiding the problem of low efficiency caused by downtime required for bag changing. For details, please refer to the appendix. Figure 7 and attached Figure 8 The figures shown are, respectively, a schematic diagram of the internal structure of a bag-placement device provided in an embodiment of the present invention and a schematic diagram of the connection of a controller provided in an embodiment of the present invention. Figure 7 and Figure 8 As can be seen, a conveying device and at least two platforms 13 spaced apart on the conveying device are provided in the second opening 112. The conveying device includes a first roller 141, a second roller 142, a conveyor belt 144 wound around the first roller 141 and the second roller 142, a third drive device 145 electrically connected to the first roller 141 and the second roller 142, and a controller 143 connected to the third drive device 145.

[0026] In this embodiment, there are two platforms 13. When in operation, one platform 13 is located directly below the first opening 111. When the packaging bags on it are used up, the third drive device 145 drives the first roller 141 and the second roller 142 to move in the same direction, thereby moving the conveyor belt 144. The conveyor belt 144 drives the platform 13 away from the first opening 111, and the next platform 13 fully loaded with packaging bags moves towards the first opening 111, completing the replacement of the platform 13. Similarly, when the replaced platform 13 is empty, the drive direction of the third drive device 145 can be adjusted to move the platform 13 away from below the first opening 111, and this process is repeated.

[0027] In other embodiments of this application, the number of platforms 13 may be 3, 4, or even more, depending on the packaging speed and efficiency. The distance and direction of each movement of the conveyor belt 144 can be preset in the controller 143 according to the number and interval of the platforms 13. The third drive device 145 can be set to start manually or automatically. For example, the time interval of each movement of the conveyor belt 144 can be preset in the controller 143 according to the number of packaging bags on the platforms 13 and the bag feeding speed of the bag feeding device 2. The length of the second opening 112 can be set according to the number of platforms 13 that need to be placed. The first roller 141 and the second roller 142 can be respectively set at the bottom of both ends of the second opening 112, and the bottom surface of the second opening 112 can be designed as the upper surface of the conveyor belt 144.

[0028] Please refer to the attached document. Figure 9 The image shown is a schematic diagram of a bag-scraping plate provided in an embodiment of the present invention. Figure 9 As can be seen, the bag scraping plate 12 includes a fixed plate 122 and a movable plate 123. The fixed plate 122 includes a fixed base plate 1221 and two fixed side plates 1222 fixedly connected to the fixed base plate 1221. The movable plate 123 is located between the two fixed side plates 1222. Gears 124 meshing with the movable plate 123 are provided on both sides of the movable plate 123. A fourth drive device 125 is fixedly connected to the center of the gears 124. The fourth drive device 125 is connected to the controller 143. Figure 9(Not shown in the image) Electrical connection. In this embodiment, the movable plate 123 can be extended and retracted by the gear 124, thereby adjusting the length of the scraper plate 12 according to the size of the packaging bag. For example, different drive levels can be preset according to the size of the packaging bag, and the controller 143 outputs the corresponding drive according to the collected size of the packaging bag to be used, controlling the driving direction and driving process of the fourth drive device 125. In addition, in other embodiments of this application, the length adjustment of the scraper plate 12 can also be achieved by other structures and methods, such as designing the scraper plate 12 as a nut structure and a matching screw structure, so that the overall length of the scraper plate 12 can be adjusted by rotating the screw.

[0029] In addition, to further improve the working efficiency of this device, in a preferred embodiment of this application, the device further includes a first photoelectric switch 7 electrically connected to the controller 143. Please refer to the appendix. Figure 10 The image shows a schematic diagram of the position of a photoelectric switch according to an embodiment of the present invention. Figure 10 As can be seen, the transmitting end 71 of the first photoelectric switch is disposed on the upper surface of the platform 13, and the receiving end 72 of the first photoelectric switch is disposed on the lower surface of the scraper plate 12. The first photoelectric switch 7 designed in this embodiment has the following two functions: first, the first photoelectric switch 7 can control the replacement of the platform 13; second, the first photoelectric switch 7 can also precisely adjust the position of the scraper plate 12.

[0030] Specifically, when there are packaging bags on the platform 13, the packaging bags will block the receiver 72 of the first photoelectric switch from receiving the signal sent by the transmitter. Therefore, when the receiver 72 of the first photoelectric switch can receive the signal, it indicates that the platform 13 is empty. At this time, the controller 143 controls the third drive device 145 to drive the conveyor to complete the replacement of the platform 13. The fully loaded platform 13 moves to the working position to continue the bag feeding process. It should be noted that when the packaging bag is made of a light-transmitting or semi-light-transmitting material, although the signal emitted by the transmitter will not be completely blocked, its intensity will be affected. Therefore, for the above special cases, this solution can design an intensity threshold. When the receiver 72 of the first photoelectric switch can receive a signal with an intensity higher than the preset threshold, it indicates that the platform 13 is completely empty, and the replacement process of the platform 13 is started.

[0031] Meanwhile, this solution can also adjust the position of the scraper plate 12 by specifically designing the orientation of the transmitter 71 and receiver 72 of the first photoelectric switch. For example, the transmitter 71 and receiver 72 of the first photoelectric switch can be installed on the same horizontal line, with the platform 13 and the first opening 111 facing each other. In this way, when the transmitter 71 of the first photoelectric switch is installed at the edge of the platform 13, the horizontal distance between the transmitter 71 and the edge of the platform 13 is the appropriate distance between the edge of the scraper plate 12 and the edge of the first opening 111. Before the bag feeding device 2 is operated, the platform 13 is left empty. If the receiver 72 of the first photoelectric switch can receive the signal sent by the transmitter 71, it indicates that the scraper plate 12 is in a suitable position. If the receiver 72 of the first photoelectric switch cannot receive the signal sent by the transmitter 71, the controller 143 needs to make appropriate adjustments to the extension length of the scraper plate 12 until the receiver can receive the signal. The specific adjustment method can be determined according to the specific structure of the scraper plate 12. For example, in the above embodiment, the scraper plate 12 includes a fixed plate 122 and a movable plate 123. The receiving end 72 of the first photoelectric switch can be set on the movable plate 123. The controller 143 drives the gear 124 through the fourth driving device 125 to drive the movable plate 123 to perform telescopic movement, thereby adjusting the length of the scraper plate 12 to obtain a suitable scraping force. In this embodiment, the first photoelectric switch can emit infrared rays of a fixed wavelength, and the receiving end located directly above the emitting end can receive the emitted infrared rays.

[0032] Furthermore, to accommodate changes in packaging bag size, other embodiments of this application also include a second photoelectric switch 8 electrically connected to the controller 143. The transmitting end 81 of the second photoelectric switch is disposed on the upper surface of the platform 13, inside the transmitting end 71 of the first photoelectric switch, and the receiving end 82 of the second photoelectric switch is disposed on the lower surface of the bag scraper 12 near the end of the first opening 111. When the packaging bag size is small, it may not be able to block the transmitting end 71 of the first photoelectric switch, which is fixed in position. Therefore, this application places the second photoelectric switch closer to the center of the platform 13 to accommodate the bag replacement needs of small-sized packaging bags. The replacement process of the second photoelectric switch on the platform 13 and the adjustment process of the bag scraper 12 are similar to those of the first photoelectric switch, and will not be described in detail here.

[0033] In addition to improving work efficiency, this application has improved the sealing device 6 to ensure the packaging quality of the equipment. Please refer to the appendix. Figure 11 Appendix Figure 12 and attached Figure 13The figures shown are a structural schematic diagram of a sealing device according to an embodiment of the present invention, a schematic diagram of the sealing device in use according to an embodiment of the present invention, and a schematic diagram of the internal structure of a sealing device according to an embodiment of the present invention. Figure 11 To be continued Figure 13 As can be seen, in the preferred embodiment of this application, the sealing device 6 includes a first sealing block 61 and a second sealing block 62 disposed opposite to each other. A first fixing member 611 is fixed on the upper surface of the first sealing block 61, and one end of a first linkage plate 64 is fixed on the first fixing member 611. An auxiliary sealing block 63 is fixed on the upper surface of the second sealing block 62. A second fixing member 631 is fixed on the side of the auxiliary sealing block 63 facing the first sealing block 61. One end of a second linkage plate 65 is fixed on the second fixing member 631. The other end of the first linkage plate 64 and the other end of the second linkage plate 65 are fixedly connected. The center position of the second linkage plate 65 is hinged to a protective plate 67 located above the first sealing block 61 through a hinge shaft 66. A drive shaft 68 is fixed on the side of the first sealing block 61 away from the second sealing block 62.

[0034] One end of the drive shaft 68 is fixed to the first sealing block 61, and the other end is connected to the drive device. In the initial state, the first sealing block 61 and the second sealing block 62 are separated. In use, the drive shaft 68 drives the first sealing block 61 to move towards the second sealing block 62. Since the first linkage plate 64 is connected to the first sealing block 61 through the first fixing member 11, the movement of the first sealing block 61 drives the first linkage plate 64 to move. The first linkage plate 64 then drives the second linkage plate 65 to move. The second linkage plate 65 is connected to the auxiliary sealing block 63 through the second fixing member 631. Therefore, the second linkage plate 65 drives the auxiliary sealing block 63 to move, and the auxiliary sealing block 63 drives the second sealing block 62 to move together. Since the second linkage plate 65 is hinged to the protective plate 67 in the middle, the movement of the second linkage plate 65 is a rotation centered on the hinge shaft 66, causing the first sealing block 61 and the second sealing block 62 to move towards each other until they are in close contact. In this embodiment, the sealing device 6 is a heat-sealing clamping mechanism. After filling, the packaging bag passes between the first sealing block 61 and the second sealing block 62, and the first sealing block 61 and the second sealing block 62 clamp together to heat-seal the packaging bag. The drive shaft 68 moves to drive the first sealing block 61 and the second sealing block 62 in linkage, ensuring close contact between the first sealing block 61 and the second sealing block 62 and guaranteeing the sealing quality.

[0035] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this invention.

Claims

1. An automatic bag-type packaging device, characterized in that, It includes, in sequence, a bag placing device (1), a bag feeding device (2), a clamping device (3), a bag opening device (4), a filling device (5), and a sealing device (6); wherein, The bag feeding device (2) includes a positioning plate (21) arranged opposite to each other. The inner side of the positioning plate (21) is fixed with a first hinge shaft (211) and a second hinge shaft (212) from top to bottom. The two ends of the first hinge shaft (211) are respectively connected to a first driving device (28) and a first movable rod (22). The two ends of the second hinge shaft (212) are respectively connected to a second driving device (29) and a second movable rod (24). The other end of the first movable rod (22) is fixedly connected to a first connecting shaft (23). The other end of the second movable rod (24) is fixedly connected to a second connecting shaft (25). The first connecting shaft (23) and the second connecting shaft (25) are respectively sleeved with a bag feeding support rod (26). The free end of the bag feeding support rod (26) is provided with an adsorption plate (27). The bag placement device (1) includes a fixed platform (11), the upper surface of the fixed platform (11) is provided with a first opening (111) that matches the adsorption plate (27), a bag scraping plate (12) with adjustable length is provided above the first opening (111), a negative pressure suction cup (121) is fixed on the upper surface of the bag scraping plate (12), and a second opening (112) is provided through the side of the fixed platform (11), and a platform (13) for placing packaging bags is provided in the second opening (112). The sealing device (6) includes a first sealing block (61) and a second sealing block (62) arranged opposite to each other. A first fixing member (611) is fixed on the upper surface of the first sealing block (61). One end of a first linkage plate (64) is fixed on the first fixing member (611). An auxiliary sealing block (63) is fixed on the upper surface of the second sealing block (62). A second fixing member (631) is fixed on the side of the auxiliary sealing block (63) facing the first sealing block (61). One end of a second linkage plate (65) is fixed on the second fixing member (631). The other end of the first linkage plate (64) and the other end of the second linkage plate (65) are fixedly connected. The center position of the second linkage plate (65) is hinged to a protective plate (67) located above the first sealing block (61) through a hinge shaft (66). A drive shaft (68) is fixed on the side of the first sealing block (61) away from the second sealing block (62). The second opening (112) is provided with a conveying device and at least two platforms (13) spaced apart on the conveying device. The conveying device includes a first roller (141), a second roller (142), a conveyor belt (144) wound around the outside of the first roller (141) and the second roller (142), a third drive device (145) connected to the first roller (141) and the second roller (142), and a controller (143) electrically connected to the third drive device (145). The automatic bag packaging equipment also includes a first photoelectric switch (7) electrically connected to the controller (143). The transmitting end (71) of the first photoelectric switch is disposed on the upper surface of the platform (13), and the receiving end (72) of the first photoelectric switch is disposed on the lower surface of the bag scraper (12). The bag scraper (12) includes a fixed plate (122) and a movable plate (123). The fixed plate (122) includes a fixed base plate (1221) and two fixed side plates (1222) fixedly connected to the fixed base plate (1221). The movable plate (123) is located between the two fixed side plates (1222). Gears (124) that mesh with the movable plate (123) are provided on both sides of the movable plate (123). A fourth drive device (125) is fixedly connected to the center of the gear (124). The fourth drive device (125) is electrically connected to the controller (143). The automatic bag packaging equipment also includes a second photoelectric switch (8) electrically connected to the controller (143). The transmitting end (81) of the second photoelectric switch is disposed on the upper surface of the platform (13) and located inside the transmitting end (71) of the first photoelectric switch. The receiving end (82) of the second photoelectric switch is disposed on the lower surface of the scraper plate (12) near the first opening (111).

2. The automatic bag-feeding packaging equipment according to claim 1, characterized in that, The platform (13) includes a base plate (131), two side plates (132), a loading plate (134) movably connected between the two side plates (132), and at least two support members (133) located between the base plate (131) and the loading plate (134). The support member (133) includes a support column (1331) with a longitudinal groove (1332), and a limiting platform (1333) and a support rod (1334) that match the longitudinal groove (1332). The limiting platform (1333) is fixed to the lower middle part of the longitudinal groove (1332). The support rod (1334) includes, in sequence, a sliding part (13341) with a width matching the longitudinal groove (1332) and a telescopic part (13342) with a width smaller than the longitudinal groove (1332). The telescopic part (13342) includes a free end that passes through the limiting platform (1333). The free end is provided with a limiting block (1336) that matches the limiting platform (1333). A spring (1335) is also sleeved on the outside of the telescopic part (13342) located between the sliding part (13341) and the limiting platform (1333).

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