A candy blowout package rejection apparatus

Abstract

The present application relates to the technical field of candy packaging production, and particularly relates to a candy empty package removing equipment; the equipment comprises an equipment frame and a workbench installed on the equipment frame; the workbench is sequentially provided with a screening mechanism and a material distributing mechanism from right to left; the screening mechanism drives the net plate to vibrate, spread and accumulate candies, and the ascending air flow blows up and collects the full empty packages, so that the problem that the accumulated empty packages are difficult to remove is solved; the driving part of the material distributing mechanism drives the suction cup to lift and translate, and the lifting part drives the baffle to drive the bristles to laterally constrain the candies in the transfer, so that the remaining candies are sequentially separated and transferred one by one, and the subsequent half empty package weighing provides the materials in neat arrangement, the full empty package is quickly removed, the half empty package is accurately screened, the removal efficiency and the accuracy are considered.

Description

Technical Field

[0001] This invention relates to the field of candy packaging production technology, and in particular to a candy blown-out bag rejection device. Background Technology

[0002] On high-speed candy packaging production lines, two types of defective products often occur due to fluctuations in material supply or packaging machine malfunctions: firstly, completely empty packages containing no candy at all; and secondly, partially empty packages containing insufficient candy or only crumbs. If these two types of defective products enter the market, they will seriously affect product quality and corporate reputation. Therefore, empty package rejection equipment needs to be installed on the production line to automatically separate defective products.

[0003] The rejection process for empty candy packages generally employs two methods: air-blowing rejection or dynamic checkweighing rejection. The specific process is as follows: After the candy is packaged, it is transported to the rejection station via a conveyor belt. For air-blowing rejection, a fan is installed on one side of the conveyor belt. Taking advantage of the light weight of the empty packages, air is blown to remove them from the conveyor belt. For dynamic checkweighing rejection, a high-precision sensor measures the weight of each candy package individually, and packages with a weight below a set threshold are rejected.

[0004] However, the following problems exist in the current process of removing empty candy packages: 1. When candy packages are completed and enter the removal station, due to speed fluctuations in the previous process or natural accumulation during the transfer process, the candy packages often arrive at the removal area in a stacked state rather than a single-layer arrangement. When air blowing is used for removal, the airflow can only act on the candy packages on the surface of the stack. The empty packages at the bottom are pressed down by the qualified products above, and the airflow cannot reach them. At the same time, the qualified products and empty packages in the stacked state are squeezed against each other. Although the empty packages are light, they are squeezed and tightly adhered to the qualified products, making it difficult to be blown away and separated by the airflow. If the blowing pressure is simply increased, the qualified products on the surface and even in the middle of the stack will be blown off, resulting in a large number of misremoved packages.

[0005] 2. The air-blowing method can only remove very light, completely empty packages, and is ineffective for semi-empty packages. While the dynamic checkweighing method can remove both completely empty and semi-empty packages, its working principle requires that each candy package must pass through the weighing platform independently and with a certain distance between them. To achieve this, existing technology requires a long-distance accelerating conveyor belt in front of the checkweigher to separate the piled-up candy packages one by one through speed differences. However, when the incoming material is heavily piled up, the accelerating section cannot completely and orderly separate the candy packages, resulting in frequent congestion or flow interruption in front of the weighing platform. The overall removal efficiency cannot match that of high-speed packaging machines.

[0006] Therefore, the difficulty in effectively removing empty packages in a stacked state and the inability to simultaneously handle fully empty and partially empty packages are technical problems that need to be solved by those skilled in the art. Summary of the Invention

[0007] In view of the above problems, the present invention provides a candy blown-out bag rejection device to solve the aforementioned technical problems.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a candy blown-out bag rejection device, comprising a device frame and a worktable mounted thereon; the worktable is provided with a screening mechanism and a material distribution mechanism from right to left.

[0009] The screening mechanism includes an air box set on the workbench, an air inlet on the left side of the air box, a screen plate fixedly installed on the upper end of the air box, a fixed plate fixedly installed on the workbench via a support column, a suction cylinder and a feed pipe fixedly installed on the fixed plate, and a vibrating part set between the air box and the workbench.

[0010] The material distribution mechanism includes two support plates fixedly installed on the upper part of the workbench, with a baffle between the two support plates. A concave groove is provided on the left end of the workbench. Brush bristles are evenly distributed on the lower end of the baffle after sliding through the workbench and the concave groove. Multiple U-shaped grooves communicating with the concave groove are evenly distributed on the workbench on the right side of the baffle. A suction cup is movably arranged in the U-shaped groove. A drive unit is provided on the workbench, and a lifting unit is provided on the support plate.

[0011] The vibrating section drives the mesh plate to vibrate and spread the candies out. The air inlet supplies air to form an upward airflow that blows up the empty package and collects it through the suction cylinder. The remaining candies move to the right side of the baffle and accumulate. The driving section drives the suction cup to lift and lift to pick up the candies and move them horizontally. At the same time, the lifting section drives the baffle to move the brush bristles to constrain the candies, so that the candies move one by one to the left side of the baffle in an orderly manner.

[0012] As a preferred embodiment, the drive unit includes a second support column. A support plate is fixedly installed at the lower end of the workbench via the second support column. A concave support is slidably installed at the upper end of the support plate. A connecting plate is provided at the opposite ends of the two vertical sections of the support. A guide is provided between the connecting plate and the support. A push-pull plate is fixedly installed at the upper end of the connecting plate. A vertical tube corresponding to each suction cup is fixedly installed at the upper end of the push-pull plate. The upper end of the vertical tube is connected to the corresponding suction cup. A vacuum channel communicating with the vertical tube is opened on the push-pull plate.

[0013] As a preferred embodiment, the lifting unit includes a top plate, and the top plate is fixedly installed on two support plates by three pillars. A pair of sliding rods are fixedly installed on the upper end of the baffle, and the upper end of the sliding rods slides through the top plate. A cylinder is fixedly installed on the upper end of the top plate, and the telescopic section of the cylinder slides through the top plate and is fixedly connected to the upper end of the baffle.

[0014] As a preferred embodiment, the support is provided with a push-pull part for driving the connecting plate to move. The push-pull part includes a bearing seat. The upper end of the support is fixedly installed with a bearing seat. A support seat is rotatably installed between the two bearing seats. A cylinder two is fixedly installed on the upper end of the support seat. The telescopic section of the cylinder two is fixedly connected to the lower end of the push-pull plate.

[0015] As a preferred embodiment, the vibration unit includes a stepper motor fixedly installed at the lower end of the workbench. The output shaft of the stepper motor rotates through the workbench and is fixedly installed on a turntable. A connecting platform is fixedly installed at an eccentric position on the upper end of the turntable. The lower end of the connecting platform is fixedly connected to the lower end of the air box. Multiple spring seats are fixedly installed between the air box and the workbench.

[0016] As a preferred embodiment, the guide component includes a guide groove, and guide grooves are provided on both vertical sections of the support. A pair of guide posts are fixedly installed on the opposite surfaces of the two connecting plates, and the guide posts slide through the corresponding guide grooves.

[0017] As a preferred embodiment, the support plate is provided with a translation component for driving the support to move. The translation component includes a cylinder three fixedly installed on the upper end of the support plate. The telescopic section of the cylinder three is fixedly connected to the right end of the support through a connecting plate.

[0018] As a preferred embodiment, the guide groove includes a lower vertical section and an upper arc-shaped section, wherein the arc-shaped section is tangentially connected to the vertical section and curves towards the side closer to the baffle.

[0019] As a preferred option, a guide plate is installed at an angle between the two support plates. The upper end of the guide plate is connected to the end of the mesh plate, and the lower end extends to the top of the worktable on the right side of the U-shaped channel.

[0020] As a preferred embodiment, the suction cylinder is a trumpet-shaped structure with a small opening at the top and a large opening at the bottom, with the lower opening located above the mesh plate.

[0021] The above-mentioned one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects: First, the present invention solves the problem of difficult removal of piled-up empty bags by driving the screen plate to vibrate and flatten the piled-up candies through the vibration part in the screening mechanism, and collecting the empty bags with the help of the rising airflow; the suction cup is driven to rise and fall and move horizontally through the drive part in the material distribution mechanism, and the baffle driven by the lifting part drives the brush to laterally constrain the candies in the transfer, so as to separate and transfer the remaining candies one by one in an orderly manner, providing neatly arranged materials for subsequent weighing of semi-empty bags, realizing the division of labor and cooperation between rapid removal of full empty bags and precise screening of semi-empty bags, and taking into account both removal efficiency and accuracy.

[0022] Second, this invention drives the screen plate to vibrate at high frequency through the vibrating part in the screening mechanism, which shakes the accumulated candies open and flattens them, exposing the empty bags at the bottom to the rising airflow. At the same time, the air box supplies air through the air inlet to form an airflow from bottom to top. All empty bags are blown up and collected by the suction cylinder, which effectively avoids the problem of empty bags being unable to be removed due to accumulation and compression. Moreover, empty bags can be separated without increasing the blowing pressure, reducing the error rejection of qualified products.

[0023] Third, this invention uses a drive unit in the material distribution mechanism to drive a suction cup to lift and adsorb candies. During the translation process, the baffle and brush driven by the lifting unit laterally constrain the candies, brushing off candies that are not firmly adsorbed. This ensures that each candy is transferred in an orderly manner to the other side of the baffle with the suction cup, realizing automatic separation from a piled state to a neatly arranged arrangement. This solves the problem of material supply congestion or interruption caused by the need for long-distance acceleration to separate piled candies in existing weighing methods, and provides a stable and orderly material flow for subsequent semi-empty bag weighing.

[0024] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] 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, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0027] Figure 2 This is a schematic diagram of the screening mechanism of the present invention.

[0028] Figure 3 This is a cross-sectional view of the structure of the vibration part of the present invention.

[0029] Figure 4 This is a schematic diagram of the lifting part of the present invention.

[0030] Figure 5 This is a schematic diagram of the structure between the turntable and the connecting platform of the present invention.

[0031] Figure 6 This is a schematic diagram of the push-pull part of the present invention.

[0032] Figure 7 This is a schematic diagram of the structure of the suction cup of the present invention after it passes over the baffle and flips over.

[0033] Reference numerals: 10. Equipment frame; 11. Workbench; 2. Screening mechanism; 20. Air box; 21. Air inlet; 22. Mesh plate; 23. Fixing plate; 24. Suction cylinder; 25. Feed pipe; 3. Vibrating part; 30. Stepper motor; 31. Turntable; 32. Connecting table; 33. Spring seat; 4. Material distribution mechanism; 40. Support plate; 400. Guide plate; 41. Baffle; 42. Brush bristles; 43. Suction cup; 5. Drive unit; 50. Support plate; 51. Support; 52. Connecting plate; 53. Push-pull plate; 54. Riser; 6. Guide component; 60. Guide groove; 61. Guide column; 7. Translation component; 70. Cylinder three; 71. Connecting plate; 8. Push-pull unit; 80. Bearing seat; 81. Support seat; 82. Cylinder two; 9. Lifting unit; 90. Top plate; 91. Slide rod; 92. Cylinder one. Detailed Implementation

[0034] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0035] like Figure 1 and Figure 2 As shown, a candy blown-out bag rejection device includes a device frame 10 and a workbench 11 installed thereon; the workbench 11 is provided with a screening mechanism 2 and a material distribution mechanism 4 from right to left.

[0036] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the screening mechanism 2 includes an air box 20 set on the workbench 11. An air inlet 21 is opened on the left side of the air box 20. A screen plate 22 is fixedly installed on the upper end of the air box 20. A fixed plate 23 located above the screen plate 22 is fixedly installed on the workbench 11 through a support column. A suction cylinder 24 and a feed pipe 25 are fixedly installed on the fixed plate 23. A vibrating part 3 is provided between the air box 20 and the workbench 11.

[0037] like Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, the material distribution mechanism 4 includes two support plates 40 fixedly installed on the upper end of the workbench 11 and symmetrically arranged front and back. A baffle 41 is provided between the two support plates 40. A concave groove is opened at the left end of the workbench 11. The lower end of the baffle 41 slides through the workbench 11 and the concave groove. Brush bristles 42 are evenly arranged at the lower end of the baffle 41. Multiple U-shaped grooves are evenly opened on the workbench 11 to the right of the baffle 41. The U-shaped grooves and the concave grooves are connected. A suction cup 43 is movably arranged in the U-shaped groove. A drive unit 5 is provided on the workbench 11, and a lifting unit 9 is provided on the support plate 40.

[0038] like Figure 3 and Figure 4 As shown, a guide plate 400 is installed at an angle between two support plates 40. The upper end of the guide plate 400 is connected to the end of the mesh plate 22, and the lower end extends to the worktable 11 on the right side of the U-shaped groove.

[0039] like Figure 2 and Figure 3 As shown, the suction cylinder 24 has a trumpet-shaped structure with a small opening at the top and a large opening at the bottom, with its lower opening located above the mesh plate 22.

[0040] like Figures 1 to 5 As shown, during actual operation, the candy packaging bags completed by the upstream packaging machine (not shown in the figure) enter the screening mechanism 2 through the feed pipe 25. The falling candy packaging bags first land on the screen plate 22. At this time, the vibration unit 3 is activated, driving the air box 20 and the screen plate 22 to generate high-frequency vibration, which shakes open and flattens the candy packaging bags piled on the screen plate 22, so that all the candy packaging bags are distributed on the surface of the screen plate 22 in a single layer. At the same time, the external air source continuously supplies air into the air box 20 through the air inlet 21. The airflow passes through the mesh of the screen plate 22 from bottom to top, forming a stable upward airflow above the screen plate 22.

[0041] Because of their extremely light weight, the empty packages are blown off the surface of the screen plate 22 by the rising airflow and float upwards. Since the suction cylinder 24 is a funnel-shaped structure with a large opening at the bottom, its opening covers a wide range. The floating empty packages are captured by the suction cylinder 24 and sucked into the collection system (not shown in the figure) along the suction cylinder 24 under the action of external negative pressure, thus realizing the centralized rejection of empty packages. The qualified products and semi-empty packages are heavier and are not affected by the rising airflow, so they continue to stay on the screen plate 22.

[0042] Under the action of vibration, the candy packaging bags on the mesh plate 22 gradually move to the left along the inclined surface of the mesh plate 22. After reaching the end of the mesh plate 22, they detach from the mesh plate 22 and slide down under the guidance of the inclined guide plate 400, and finally accumulate on the workbench 11 on the right side of the baffle 41. As the material continues to be supplied, the number of candy packaging bags in this area gradually increases.

[0043] When material sorting is required, the drive unit 5 starts to operate. The drive unit 5 first drives the suction cup 43 to move slightly upward. The suction cup 43 rises from below the worktable 11, passes through the U-shaped groove and protrudes above the worktable 11, adsorbing the candy packaging bag located directly above the U-shaped groove. Since the diameter of the suction cup 43 is smaller than the width of a single candy packaging bag, each suction cup 43 can only contact and adsorb one candy packaging bag located directly above it when it rises, thus achieving single adsorption.

[0044] After the suction cup 43 adsorbs the candy packaging bag, the lifting part 9 is activated, driving the baffle 41 to move upward, so that the bristles 42 are located on the path of the candy packaging bag. At this time, the tip of the bristles 42 is not higher than the top of the candy packaging bag, and only makes contact from the side.

[0045] Subsequently, the drive unit 5 drives the suction cup 43 and the candy packaging bag attached to it to move horizontally to the left along the U-shaped groove. During the movement, the bristles 42 generate lateral friction on the candy packaging bag, brushing off candy packaging bags that are not firmly attached or have shifted position, ensuring that each suction cup 43 carries only one firmly attached candy packaging bag to continue moving to the left.

[0046] The suction cup 43 continues to move to the left until the candy packaging bag moves with the suction cup 43 to the area on the left side of the baffle 41. At this time, the suction cup 43 moves upward and rotates under the action of the drive unit 5, causing the candy packaging bag to detach from the suction cup 43 and fall onto the multi-row dynamic weighing machine (not shown in the figure) under the action of gravity. After the multiple suction cups 43 complete the adsorption, transfer and release in sequence, the originally disordered candy packaging bags form a neat arrangement with equal spacing on the multi-row dynamic weighing machine (not shown in the figure).

[0047] The above process is repeated in a cycle. The drive unit 5 continuously drives the suction cup 43 to perform lifting, translation and resetting actions. The lifting unit 9, in conjunction with the control baffle 41, lifts and lowers the candy packaging bags in the accumulation area one by one and transfers them in an orderly manner to the discharge station. This completes the automatic material sorting operation of the candy packaging bags after the removal of all empty bags, providing orderly arranged materials for the subsequent weighing and screening of semi-empty bags.

[0048] like Figure 2 , Figure 3 and Figure 5 As shown, the vibration unit 3 includes a stepper motor 30 fixedly installed at the lower end of the workbench 11. The output shaft of the stepper motor 30 rotates through the workbench 11 and is fixedly installed on a turntable 31. A connecting platform 32 is fixedly installed at an eccentric position on the upper end of the turntable 31. The lower end of the connecting platform 32 is fixedly connected to the lower end of the air box 20. Multiple spring seats 33 are fixedly installed between the air box 20 and the workbench 11.

[0049] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the lifting part 9 includes a top plate 90. The top plate 90 is fixedly installed on two support plates 40 by three pillars. A pair of sliding rods 91 are fixedly installed on the upper end of the baffle 41. The upper end of the sliding rods 91 slides through the top plate 90. A cylinder 92 is fixedly installed on the upper end of the top plate 90. The telescopic section of the cylinder 92 slides through the top plate 90 and is fixedly connected to the upper end of the baffle 41.

[0050] like Figures 1 to 5 As shown, during actual operation, after the suction cup 43 completes the adsorption of the candy packaging bag, the telescopic section of the cylinder 92 retracts, pulling the baffle 41 fixedly connected to it upward. The pair of sliding rods 91 fixedly installed on the upper end of the baffle 41 move upward synchronously with the baffle 41, ensuring that the baffle 41 maintains stable vertical movement, so that the bristles 42 evenly arranged at the lower end of the baffle 41 gradually approach the candy packaging bag adsorbed on the suction cup 43.

[0051] When the baffle 41 rises to the set position, the drive unit 5 drives the suction cup 43 and the candy packaging bag attached to it to move horizontally to the left. During the movement, the brush bristles 42 brush off the candy packaging bags that are not firmly attached or whose position has shifted from the suction cup 43, ensuring that only the firmly attached candy packaging bags can continue to move with the suction cup 43.

[0052] After the suction cup 43 completes its leftward movement, the telescopic section of the cylinder 92 extends, causing the baffle 41 to move down and reset. The bristles 42 then leave the candy packaging bag area, preparing for the next suction cycle. Through the precise control of the position of the baffle 41 by the lifting part 9, the lateral constraint and screening functions of the candy packaging bag during the transfer process are realized.

[0053] like Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, the drive unit 5 includes a second support column. A support plate 50 is fixedly installed on the lower end of the worktable 11 through the second support column. A concave support 51 is slidably installed on the upper end of the support plate 50. A connecting plate 52 is provided at the opposite ends of the two vertical sections of the support 51. A guide 6 is provided between the connecting plate 52 and the support 51. A push-pull plate 53 is fixedly installed on the upper end of the connecting plate 52. A riser 54 corresponding to the suction cup 43 is fixedly installed on the upper end of the push-pull plate 53. The upper end of the riser 54 is connected to the corresponding suction cup 43. A vacuum channel communicating with the riser 54 is opened on the push-pull plate 53.

[0054] like Figure 2 , Figure 6 and Figure 7As shown, the support 51 is provided with a push-pull part 8 for driving the connecting plate 52 to move. The push-pull part 8 includes a bearing seat 80. The upper end of the support 51 is fixedly installed with a bearing seat 80. A support seat 81 is rotatably installed between the two bearing seats 80. A cylinder 82 is fixedly installed on the upper end of the support seat 81. The telescopic section of the cylinder 82 is fixedly connected to the lower end of the push-pull plate 53.

[0055] like Figure 6 and Figure 7 As shown, the guide member 6 includes a guide groove 60. The two vertical sections of the support 51 are each provided with a guide groove 60. A pair of guide posts 61 are fixedly installed on the opposite surfaces of the two connecting plates 52. The guide posts 61 slide through the corresponding guide grooves 60.

[0056] like Figure 2 , Figure 4 and Figure 6 As shown, the support plate 50 is provided with a translation component 7 for driving the support 51 to translate. The translation component 7 includes a cylinder 3 70 fixedly installed on the upper end of the support plate 50. The telescopic section of the cylinder 3 70 is fixedly connected to the right end of the support 51 through a connecting plate 71.

[0057] like Figure 7 As shown, the guide groove 60 includes a lower vertical section and an upper arc-shaped section. The arc-shaped section is tangentially connected to the vertical section and bends towards the side closer to the baffle 41.

[0058] like Figures 1 to 7 As shown, during actual operation, the telescopic rod of cylinder 3 70 retracts, and the connecting plate 71 pushes the support 51 to move horizontally to the right on the support plate 50, so that the support 51 moves to the initial material picking position. At this time, each vertical pipe 54 fixedly installed on the upper end of the push-pull plate 53 and the suction cup 43 connected to it are located at the starting end of the right side of the baffle 41, ready to perform the adsorption operation.

[0059] Subsequently, the telescopic rod of cylinder 82 extends, pushing the push-pull plate 53 upward. Since the push-pull plate 53 is fixedly connected to the connecting plate 52, the connecting plate 52 moves upward accordingly. The guide post 61 on the connecting plate 52 slides in the guide groove 60 opened in the vertical section of the support 51, precisely guiding the movement direction of the connecting plate 52. The lower part of the guide groove 60 is a vertical section, so the connecting plate 52 first drives the push-pull plate 53 and the riser 54 to rise in the vertical direction, causing the suction cup 43 to rise from the worktable 11 and protrude above the worktable 11, adsorbing the candy packaging bag located directly above the U-shaped groove. Since the diameter of the suction cup 43 is smaller than the width of a single candy packaging bag, each suction cup 43 can only contact and adsorb one candy packaging bag when it rises, realizing single-candy picking.

[0060] The telescopic rod of cylinder 3 70 extends and pushes the support 51 to move horizontally to the left through the connecting plate 71. When the support 51 moves to the left, it drives the entire drive unit 5 and the candy packaging bag adsorbed on the suction cup 43 to move to the left simultaneously. When the support 51 moves to the corresponding position, the suction cup 43 and the candy packaging bag on it have completely moved to the left side of the baffle 41. At this time, the telescopic rod of cylinder 2 82 continues to extend and pushes the push-pull plate 53 to move upward. The guide post 61 on the connecting plate 52 enters the arc section from the vertical section of the guide groove 60, guiding the connecting plate 52 and the push-pull plate 53 to start swinging to the left in an arc shape while rising. This causes the suction cup 43 and the candy packaging bag it adsorbs to continue to transfer from the left side area of ​​the concave groove to the left side outside, lifting the candy packaging bag and swinging it above the external multi-row dynamic weighing machine.

[0061] When the suction cup 43 completes its arc-shaped trajectory and moves to the top of the guide groove 60, the suction cup 43 and the candy packaging bag on it have reached the corresponding work position of the external multi-row dynamic weighing machine. Subsequently, the suction cup 43 releases the candy, and the candy packaging bag detaches from the suction cup 43 under the action of gravity and falls neatly onto the conveyor belt of the external multi-row dynamic weighing machine. After that, the push-pull part 8 reverses its action, the telescopic rod of the cylinder 82 retracts, and the push-pull plate 53 moves downward. The guide post 61 on the connecting plate 52 slides down along the arc-shaped section and the vertical section of the guide groove 60 in sequence, guiding the suction cup 43 to descend and reset along the original path.

[0062] Finally, cylinder 370 retracts, pushing support 51 to the right to reset, so that the entire drive unit 5 returns to the initial material picking position, ready for the next cycle.

[0063] Through the coordinated operation of the drive unit 5, push-pull unit 8, translation component 7, and guide component 6, the suction cup 43 realizes a complete action cycle of adsorption and material picking, horizontal leftward movement over baffle 41, arc-shaped upward swing to the weighing machine, and reset. It adsorbs, orderly transfers, and transports the candy packaging bags piled on the right side of baffle 41 to the external multi-row dynamic weighing machine, providing an orderly material basis for the precise weighing and screening of semi-empty bags.

[0064] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0065] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0066] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0067] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A candy bag rejection device, comprising a frame and a worktable mounted thereon; characterized in that: The workbench is equipped with a screening mechanism and a material distribution mechanism from right to left. The screening mechanism includes an air box set on the workbench, an air inlet on the left side of the air box, a screen plate fixedly installed on the upper end of the air box, a fixed plate fixedly installed on the workbench via a support column, a suction cylinder and a feed pipe fixedly installed on the fixed plate, and a vibrating part set between the air box and the workbench. The material dispensing mechanism includes two support plates fixedly installed on the upper part of the workbench, with a baffle between the two support plates. A concave groove is opened at the left end of the workbench. The lower end of the baffle slides through the workbench and the concave groove and is evenly provided with bristles. Multiple U-shaped grooves communicating with the concave groove are evenly opened on the workbench to the right of the baffle. A suction cup is movably installed in the U-shaped groove. The suction cup can only contact and adsorb one candy packaging bag located directly above it. A driving part is provided on the workbench, and a lifting part is provided on the support plate. The lifting unit includes a top plate, and the top plate is fixedly installed on two support plates by three pillars. A pair of sliding rods are fixedly installed on the upper end of the baffle, and the upper end of the sliding rods slides through the top plate. A cylinder is fixedly installed on the upper end of the top plate, and the telescopic section of the cylinder slides through the top plate and is fixedly connected to the upper end of the baffle. The vibrating section drives the mesh plate to vibrate and spread the candies out. The air inlet supplies air to form an upward airflow that blows up the empty bags and collects them through the suction cylinder. The remaining candies move to the right side of the baffle and pile up. The driving section drives the suction cup to lift and lift to pick up the candies and move them horizontally. At the same time, the lifting section drives the baffle to move the brush bristles to constrain the candies, so that the candies move one by one in an orderly manner to the left side of the baffle. During the movement, the brush bristles brush off the candy bags that are not firmly attached or have shifted position.

2. The candy blown-out bag rejection device according to claim 1, characterized in that: The drive unit includes a second support column. A support plate is fixedly installed on the lower end of the workbench via the second support column. A concave support is slidably installed on the upper end of the support plate. A connecting plate is provided at the opposite ends of the two vertical sections of the support. A guide is provided between the connecting plate and the support. A push-pull plate is fixedly installed on the upper end of the connecting plate. A vertical tube corresponding to each suction cup is fixedly installed on the upper end of the push-pull plate. The upper end of the vertical tube is connected to the corresponding suction cup. A vacuum channel connected to the vertical tube is opened on the push-pull plate.

3. The candy blown-out bag rejection device according to claim 2, characterized in that: The support is provided with a push-pull part for driving the connecting plate to move. The push-pull part includes a bearing seat. The upper end of the support is fixedly installed with a bearing seat. A support seat is rotatably installed between the two bearing seats. A cylinder two is fixedly installed on the upper end of the support seat. The telescopic section of the cylinder two is fixedly connected to the lower end of the push-pull plate.

4. The candy empty bag rejection device according to claim 1, characterized in that: The vibrating part includes a stepper motor fixedly installed at the lower end of the workbench. The output shaft of the stepper motor rotates through the workbench and is fixedly installed on a turntable. A connecting platform is fixedly installed at an eccentric position on the upper end of the turntable. The lower end of the connecting platform is fixedly connected to the lower end of the air box. Multiple spring seats are fixedly installed between the air box and the workbench.

5. The candy empty bag rejection device according to claim 2, characterized in that: The guide component includes a guide groove. Guide grooves are provided on both vertical sections of the support. A pair of guide posts are fixedly installed on the opposite surfaces of the two connecting plates. The guide posts slide through the corresponding guide grooves.

6. The candy blown-out bag rejection device according to claim 2, characterized in that: The support plate is provided with a translation component for driving the support to move. The translation component includes a cylinder three fixedly installed on the upper part of the support plate. The telescopic section of the cylinder three is fixedly connected to the right end of the support through a connecting plate.

7. The candy empty bag rejection device according to claim 5, characterized in that: The guide groove includes a lower vertical section and an upper arc-shaped section, the arc-shaped section being tangentially connected to the vertical section and curving towards the side closer to the baffle.

8. The candy blown-out bag rejection device according to claim 1, characterized in that: A guide plate is installed at an angle between the two support plates. The upper end of the guide plate is connected to the end of the mesh plate, and the lower end extends to the top of the worktable on the right side of the U-shaped channel.

9. The candy blown-out bag rejection device according to claim 1, characterized in that: The suction cylinder has a trumpet-shaped structure with a small opening at the top and a large opening at the bottom, with the lower opening located above the mesh plate.

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