Plastic bag packaging machine for food packaging and packaging detection method thereof

Abstract

The invention relates to a food packaging plastic bag packaging machine and a packaging detection method thereof, and relates to the field of food packaging, the food packaging plastic bag packaging machine comprises a base and a base plate, and further comprises a feeding assembly, a clamping and packaging assembly and a conveying assembly. The feeding assembly comprises a feeding unit arranged on the surface of the working face of the base. The clamping and feeding unit is arranged on the surface of the working surface of the base; the clamping and packaging assembly comprises a material storing and charging unit arranged on the surface of the working face of the base. The material receiving unit is movably arranged on the surface of the working surface of the base; the material sealing unit is arranged on the surface of the working surface of the base; the conveying assembly is arranged on the surface of the working face of the base and is of a multi-channel conveying structure. And the material sealing unit is provided with a corresponding telescopic weighing platform. According to the food packaging bag sealing device, bagging and bag sealing treatment of food packaging can be completed in a limited space through cooperation of all the assemblies, and the occupied space and area of the device are effectively reduced. And the packaged products after bagging can be rapidly detected and screened, and the overall operation precision and efficiency are effectively improved.

Description

Technical Field

[0001] The invention relates to the field of food packaging, and in particular to a plastic bag packaging machine for food packaging and a packaging detection method thereof. Background Art

[0002] Bag-in-bag food packaging machine is a kind of equipment used to pack small package food, such as liquid, powder, granular or block food, which is characterized by placing the inner bag in the outer bag to provide better protection and insurance effect. With the development of science and technology, although food packaging technology has been gradually improved, there are still some defects and limitations.

[0003] A Chinese patent with publication number CN118163978B discloses a food production and packaging machine, including: two base brackets; a control box fixedly connected to the outside of the base bracket; a feeding unit for feeding bulk food; a bag supply unit for supplying food packaging film; through the cooperation of a telescopic tube, a positive and negative threaded rod, and a lifting plate, a first motor is turned on, and the first motor drives the positive and negative threaded rod to rotate through an output shaft. Since the positive and negative threaded rod is connected to the lifting plate through a threaded connection, the positive and negative threaded rod drives the lifting plate to reciprocate up and down, and the lifting plate changes the capacity in the telescopic tube through the up and down reciprocating motion, wherein the capacity in the telescopic tube is the packaging amount of food; then the rotating rod is driven to rotate; the rotating rod drives the distribution plate to rotate, and the distribution plate passes through an arc-shaped baffle during the rotation process. The arc-shaped baffle blocks excess food in the existing baffle, and the food in the telescopic tube flows out through a third through hole, thereby achieving the effect of quantitative distribution, thereby solving the problem of inconvenient control of the packaging amount. It provides a quantitative discharging device for granular puffed food, but when this device is applied to the packaging of bag-in-bag food, it cannot meet the demand for quantitative discharging.

[0004] Traditional bag-in-bag food packaging requires multiple complex steps and processes, resulting in large equipment space. At the same time, the secondary calibration of the product after quantitative packaging needs to be performed separately, which not only complicates the operation but also affects the overall production efficiency, making it difficult to control the accuracy of the overall operation of the bagging machine. Summary of the invention

[0005] Purpose of the invention: To provide a plastic bag packaging machine for food packaging, and further provide a packaging detection method based on the above-mentioned plastic bag packaging machine for food packaging, so as to solve the above-mentioned problems existing in the prior art.

[0006] Technical solution: A plastic bag packaging machine for food packaging, including a base and a base plate with a predetermined bearing space and supporting force, and also includes three components: a feeding component, a clamping and packaging component and a transportation component.

[0007] The feeding assembly includes a feeding unit placed on the working surface of the base and having a predetermined inclination angle and a bearing space; a clamping feeding unit placed on the working surface of the base and having a predetermined working distance between the clamping feeding unit and the feeding unit; The clamping and packaging assembly comprises a material storage and loading unit which is placed on the working surface of the base and has a predetermined working size and a carrying space; a material receiving unit which is movably arranged on the working surface of the base and has a predetermined working distance between the material storage and loading unit; and a material sealing unit which is placed on the working surface of the base and has a predetermined working distance between the material receiving unit. The transport component is placed on the working surface of the base and corresponds to the working position of the clamping packaging component, and is a multi-channel transport structure.

[0008] And the sealing unit is provided with a corresponding telescopic weighing platform.

[0009] In a further embodiment, the feeding unit includes five components, namely, a feeding positioning column, a loading barrel, a feeding roller, a feeding transport plate and a baffle plate. The feeding positioning column is placed on the working surface of the substrate, has a predetermined working length and supporting force, and can perform corresponding supporting and limiting operations. The loading barrel is placed on the working surface of the feeding positioning column, is provided with a bearing cavity of a predetermined working size, and is provided with a corresponding open end, and is of a special shape. The feeding roller is rotatably connected to the working surface of the feeding positioning column through a rotating column, and is placed at a position below the working direction of the loading barrel, and is in multiple numbers. The feeding transport plate is connected to the substrate through a supporting column, has a predetermined working length, and is provided with a corresponding conveying crawler on the working surface, which is placed at a position below the working direction of the feeding roller. The baffle plate is placed on the working surface of the substrate, has a predetermined working length, and has a predetermined working distance between it and the feeding transport plate. A counter-brush roller is provided at a predetermined working position of the bearing cavity of the loading barrel, and the counter-brush roller includes a rotating roller and a brush roller. The rotating roller is rotatably connected to the loading barrel and has a predetermined working length and supporting force; the brush roller is placed outside the rotating roller, has a predetermined working size, and can rotate following the rotation of the rotating roller.

[0010] In a further embodiment, the clamping feeding unit includes four components: a clamping positioning column, a connecting arm, an extension arm and a clamping arm. The clamping positioning column is placed on the working surface of the substrate, has a predetermined working length and supporting force, and can perform corresponding positioning and supporting operations. The connecting arm is connected to the clamping positioning column, has a predetermined working length, and can perform corresponding connecting and limiting operations. The extension arm is rotatably connected to the connecting arm through a connecting cylinder, has a predetermined working length and supporting force, and can perform corresponding extension adjustment operations. The clamping arm is rotatably connected to the extension arm, has a predetermined working size, and can perform corresponding clamping and limiting operations.

[0011] In a further embodiment, the extension arm is connected to the clamping and positioning column via a rotating arm, and the rotating arm is rotatably connected to the clamping and positioning column. The clamping arm includes a fixed clamping plate and a movable clamping plate, the fixed clamping plate is connected to the extension arm and has a predetermined operating size, and the movable clamping plate is rotatably connected to the clamping and positioning column via an adjusting cylinder, has a predetermined operating size, and can perform a rotation adjustment operation within a predetermined range.

[0012] In a further embodiment, the material storage bagging unit includes three components: a feeding barrel, a material storage tray and a vibrating discharge tray. The feeding barrel is connected to the base through a pillar, has a predetermined bearing space, is provided with a corresponding open end, and is provided with a guide tube with a predetermined inclination angle and operating length. The material storage tray is connected to the base through a central column, has a predetermined operating size and bearing space, and is provided with a corresponding discharge through hole. The vibrating discharge tray is placed below the operating position of the material storage tray, is provided with a plurality of shock-absorbing springs, and is connected to the central column, has a predetermined operating size and supporting force.

[0013] In a further embodiment, the material receiving unit includes three components: a connecting pipe, a material blocking barrel, and a telescopic discharge pipe. The connecting pipe is connected to the discharge through hole of the material storage tray, has a predetermined bending arc, is hollow and is open at both ends. The material blocking barrel is connected to the connecting pipe, is provided with a receiving cavity of a predetermined operating size, and is provided with a corresponding charging through hole. The telescopic discharge pipe is connected to the charging through hole of the material blocking barrel, has a predetermined operating length and telescopicity, and is open at both ends.

[0014] In a further embodiment, the sealing unit includes four components: a bagging clamping arm, an auxiliary box, an adsorption bag opening arm, and a hot press packaging arm. The bagging clamping arm is slidably connected to the working surface of the base, has a predetermined working length and elasticity, can be adjusted within a predetermined range of telescopic adjustment, and is in multiple. The auxiliary box is placed on the working surface of the base, is hollow and open at both ends, and has a predetermined working distance between it and the bagging clamping arm, and is provided with a predetermined receiving cavity. The adsorption bag opening arm is placed in the receiving chamber of the auxiliary box, has a predetermined working size and supporting force, is provided with a corresponding bag opening suction cup, and has a predetermined elasticity, and is in multiple. The hot press packaging arm is placed in the receiving chamber of the auxiliary box, has a predetermined working size and supporting force, is placed below the working position of the adsorption bag opening arm, and has a predetermined elasticity, and is in multiple. The telescopic weighing platform is placed in the receiving chamber of the auxiliary box, has a predetermined working distance between it and the hot press packaging arm, and has a predetermined supporting force and elasticity. The transport components are two transport tracks, and the operating transport directions of the two transport tracks are opposite.

[0015] A packaging detection method for a plastic bag packaging machine for food packaging, comprising the following steps: First, the plastic packaging bags are stacked and placed in the loading barrel to be fed, and at the same time, the reverse brush roller is started to brush in the reverse direction to break up the stacked plastic packaging bags, so that the plastic packaging bags pass through the open end of the loading barrel, slide out through the open end of the loading barrel, and are controlled by the feeding roller, and are transported in the direction close to the clamping feeding unit along the feeding transport plate; When the plastic packaging bag is conveyed to the predetermined working position, the clamping and feeding unit is started; the clamping arm is driven to move toward the direction close to the plastic packaging bag as a whole by adjusting the position of the extension arm, and stops when it moves to the predetermined working position, and the clamping arm picks up the plastic packaging bag, and then the extension arm is adjusted again to drive the clamping arm and the plastic packaging bag as a whole to move toward the direction close to the sealing unit; Subsequently, when the clamping arm drives the plastic packaging bag to move to the predetermined working position and stops, the bagging clamping arm clamps the plastic packaging bag, and then the bagging clamping arm slides with the plastic packaging bag toward the auxiliary box; after sliding to the predetermined working position, the suction bag opening arm starts to suction open the bag; Next, the telescopic discharge tube is extended and inserted into the opened plastic packaging bag. At the same time, the telescopic weighing platform is extended to hold the plastic packaging bag. The vibrating discharge tray is started to vibrate and load the material. The telescopic weighing platform weighs the bag weight in real time. When the number of bagged food in the bag reaches a predetermined value, the vibrating discharge tray stops working, and the telescopic discharge tube is retracted to exit the plastic packaging bag. When the vibrating discharge tray stops operating, the telescopic weighing platform will weigh and record the bag weight again; if the weighed weight reaches the preset value and is within the tolerance range, the hot-pressing packaging arm will start to seal the bagged plastic packaging bag, and then the telescopic clamping arm will be released, the telescopic weighing platform will shrink, and the bagged plastic packaging food will fall off and be transported out via the transport component; if the weighed weight reaches the preset value but is outside the tolerance range, or does not reach the preset weight value, the telescopic clamping arm will pick up the bagged plastic packaging bag and stretch it, placing the unqualified bagged products at the corresponding position of the transport component, and transporting them to the defective product recycling area via the transport component for manual recycling and adjustment; Finally, repeat the above steps in sequence, and so on, until the system stops working.

[0016] In a further embodiment, the telescopic weighing platform, the vibrating discharge tray, the hot pressing packaging arm and the telescopic clamping arm are all used to transmit and execute instructions through wireless signals; the analysis and judgment steps of the telescopic weighing platform specifically include: The first step is to set the input target weight , and the number of small packages of food that need to be loaded inside the plastic packaging bag n; when the number of small packages of food shaken and dropped by the vibrating discharge tray reaches the predetermined number, the vibrating discharge tray stops working, the telescopic weighing platform starts, and the total weight after bagging is weighed. ; ; in, is the total weight after bagging, is the weight of the plastic bag, is the total weight of the small packages of food loaded; The second step is to set the allowable error percentage E, combined with the target weight , to judge the eligibility of the bagged items, the specific formula is as follows: ; in, is the target weight, is the total weight after bagging, It is to set the maximum allowable error value; The third step is to determine that the output value of 0 is a qualified product and the output value of 1 is a defective product.

[0017] In a further embodiment, during the continuous bagging operation, the overall loading accuracy is controlled by calculating the standard deviation to improve the overall loading stability. The specific calculation formula is as follows: ; Where σ is the standard deviation, is the total weight of the ith package after bagging, is the average weight of the products that have been bagged, and N is the total number of packages that have been bagged; ; in, is the total weight of the i-th package after bagging, and N is the total number of packages that have completed bagging.

[0018] Beneficial effects: The present invention relates to a plastic bag packaging machine for food packaging and a packaging detection method thereof, which relates to the field of food packaging, and includes a base and a substrate with a predetermined bearing space and supporting force, and also includes a feeding component, a clamping and packaging component and a transportation component. The feeding component includes a feeding unit placed on the working surface of the base, with a predetermined inclination angle and bearing space; a clamping and feeding unit placed on the working surface of the base, with a predetermined working distance between the feeding unit and the feeding unit; the clamping and packaging component includes a material storage and loading unit placed on the working surface of the base, with a predetermined working size and bearing space; a receiving unit movably arranged on the working surface of the base, with a predetermined working distance between the material storage and loading unit and the material receiving unit; a sealing unit placed on the working surface of the base, with a predetermined working distance between the receiving unit and the material receiving unit; the transportation component is placed on the working surface of the base, corresponding to the working position of the clamping and packaging component, and is a multi-lane transportation structure. And the sealing unit is provided with a corresponding telescopic weighing platform. The present invention can complete the bagging and sealing of food packaging in a limited space through the cooperation between the various components, effectively reducing the space and area occupied by the device. It can also quickly detect and screen the packaged products after bagging, effectively improving the overall operation accuracy and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an overall schematic diagram of the present invention.

[0020] Figure 2 It is a side view of the feeding unit of the present invention.

[0021] Figure 3 It is a schematic diagram of some components of the feeding unit described in the present invention.

[0022] Figure 4 It is a schematic diagram of the clamping feeding unit of the present invention.

[0023] Figure 5 It is an enlarged schematic diagram of some components of the present invention.

[0024] Figure 6 Schematic diagram of some components of the present invention.

[0025] The reference numerals in the figure are: 1, base; 2, substrate; 3, feeding unit; 301, feeding positioning column; 302, loading bucket; 303, feeding roller; 304, feeding transport plate; 305, supporting column; 306, blocking plate; 307, rotating roller; 308, brush roller; 4, clamping feeding unit; 401, clamping positioning column; 402, connecting arm; 403, extension arm; 404, connecting cylinder; 405, fixed clamping plate; 406, movable clamping plate; 407, support column; 408, support column; 409, support column; 410, support column; 411, support column; 412, support column; 413, support column; 414, support column; 415, support column; 416, support column; 417, support column; 418, support column; 419, support column; 420, support column; 421, support column; 422, support column; 423, support column; 424, support column; 425, support column; 426, support column; 427, support column; 428, support column; 429, support column; 430, support column; 431, support column; 432, support column; 433, support column; 434, support column; 435, support column; 436, support column; 437, support column; 438, support column; 439, support column; 440, support column; 441, support column; 442, support column; 443, support column; 444, support column; 445, support column; 446, support column; 447, support column; 448, support column; 449, support column; 450, support column; 451 7. Adjusting cylinder; 5. Material storage and loading unit; 501. Feeding barrel; 502. Material guide pipe; 503. Material storage tray; 504. Vibrating discharge tray; 505. Pillar; 6. Material receiving unit; 601. Connecting pipe; 602. Material blocking barrel; 603. Telescopic discharge pipe; 7. Sealing unit; 701. Bagging clamping arm; 702. Auxiliary box; 703. Adsorption bag opening arm; 704. Bag opening suction cup; 705. Hot pressing packaging arm; 8. Telescopic weighing platform; 9. Transport component. DETAILED DESCRIPTION

[0026] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0027] The applicant believes that the traditional bag-in-bag food packaging process requires multiple complex steps and processes, resulting in a large space occupied by the equipment. At the same time, it is impossible to accurately and timely inspect the packaged products, resulting in a high defective rate and difficulty in controlling the accuracy of the overall operation.

[0028] To this end, the applicant has designed a plastic bag packaging machine for food packaging and a packaging detection method thereof, which can complete the bagging and sealing of food packaging in a limited space through the coordination between the various components, effectively reducing the space and area occupied by the device. It can also quickly detect and screen the packaged products after bagging, effectively improving the overall operation accuracy and efficiency.

[0029] The plastic bag packaging machine for food packaging involved in the present invention mainly includes a base 1 and a base plate 2 with a predetermined bearing space and supporting force, and also includes three components: a feeding component, a clamping and packaging component and a transportation component 9. Among them, the feeding component includes a feeding unit 3 placed on the working surface of the base 1, with a predetermined inclination angle and bearing space; a clamping and feeding unit 4 placed on the working surface of the base 1, with a predetermined working distance between the feeding unit 3. The clamping and packaging component includes a storage and loading unit 5 placed on the working surface of the base 1, with a predetermined working size and bearing space; a receiving unit 6 movably arranged on the working surface of the base 1, with a predetermined working distance between the storage and loading unit 5; and a sealing unit 7 placed on the working surface of the base 1, with a predetermined working distance between the receiving unit 6. The transportation component 9 is placed on the working surface of the base 1, corresponding to the working position of the clamping and packaging component, and is a double-lane transportation structure. And the sealing unit 7 is provided with a corresponding telescopic weighing platform 8.

[0030] The feeding unit 3 includes five components: a feeding positioning column 301, a loading barrel 302, a feeding roller 303, a feeding transport plate 304 and a baffle plate 306. The feeding positioning column 301 is placed on the working surface of the substrate 2, has a predetermined working length and supporting force, and can perform corresponding supporting and limiting operations. The loading barrel 302 is placed on the working surface of the feeding positioning column 301, is provided with a bearing cavity of a predetermined working size, and is open at both ends and is of a special shape, and is provided with a material guide slope with a predetermined inclination angle. The working sizes of the two open ends of the loading barrel 302 are different, one is a wide mouth end, and the other is a narrow mouth end, and the working width of the narrow mouth end is less than the thickness of three plastic packaging bags to be fed. The feeding roller 303 is rotatably connected to the working surface of the feeding positioning column 301 through a rotating column, and is placed at a lower position of the working direction of the loading barrel 302, and is multiple. In a further preferred embodiment, there are two feeding rollers 303, and the distance between the two feeding rollers 303 is greater than the thickness of a plastic packaging bag and less than the thickness of two plastic packaging bags, so that the number of plastic packaging bags fed in a single transport can be limited and blocked. The feeding and transporting plate 304 is connected to the base plate 2 through a support column 305, has a predetermined working length, and a corresponding conveying crawler is provided on the working surface, which is placed below the working direction of the feeding roller 303. The baffle plate 306 is placed on the working surface of the base plate 2, has a predetermined working length, and has a predetermined working distance between it and the feeding and transporting plate 304. In a further preferred embodiment, the vertical working height of the baffle plate 306 is higher than the horizontal working height of the feeding and transporting plate 304, that is, the baffle plate 306 extends vertically out of the feeding and transporting plate 304, and the overall working length of the baffle plate 306 is less than the overall working length of the plastic packaging bag to be fed, and is greater than half of the overall working length of the plastic packaging bag to be fed, so that the clamping and feeding unit 4 can perform corresponding clamping and feeding processing on the plastic packaging bag later. A reverse brush roller 308 is provided at a predetermined working position of the bearing cavity of the feeding barrel 302, and the reverse brush roller 308 includes a rotating roller 307 and a brush roller 308. The rotating roller 307 is rotatably connected to the feeding barrel 302, and has a predetermined working length and supporting force; the brush roller 308 is placed outside the rotating roller 307, has a predetermined working size, and can rotate with the rotation of the rotating roller 307. In a further preferred embodiment, the distance between the operating position of the brush roller 308 and the narrow end of the loading barrel 302 is less than the overall operating length of a plastic packaging bag to be loaded. In the later operation process, since the loading barrel 302 is of a special shape and is provided with a material guiding slope with a predetermined inclination angle, after the plastic packaging bag is put into the loading barrel 302, the plastic packaging bag will slide down along the provided material guiding slope.At the same time, due to the brush roller 308, the plastic packaging bags can be broken up twice during the feeding process, and the multiple positioning and limiting of the narrow end of the feeding barrel 302 and the feeding roller 303 can effectively avoid the phenomenon of plastic packaging bags sticking during the feeding process. The plastic packaging bags are transported along the feeding transport plate 304 toward the direction close to the baffle plate 306. After being transported to the predetermined working position, the plastic packaging bags will slide down along the feeding transport plate 304. Due to the existence of the baffle plate 306, the transported plastic packaging bags will be forced to stand upright, so that the clamping and feeding unit 4 can clamp and feed them. In a further preferred embodiment, the baffle plate 306 is L-shaped, and the distance between the baffle plate 306 and the feeding transport plate 304 is greater than the thickness of a plastic packaging bag to be fed.

[0031] The clamping and feeding unit 4 includes four components: a clamping and positioning column 401, a connecting arm 402, an extension arm 403 and a clamping arm. The clamping and positioning column 401 is placed on the working surface of the substrate 2, has a predetermined working length and supporting force, and can perform corresponding positioning and supporting operations. The connecting arm 402 is connected to the clamping and positioning column 401, has a predetermined working length, and can perform corresponding connecting and limiting operations. The extension arm 403 is rotatably connected to the connecting arm 402 through a connecting cylinder 404, has a predetermined working length and supporting force, and can perform corresponding extension and adjustment operations. The clamping arm is rotatably connected to the extension arm 403, has a predetermined working size, and can perform corresponding clamping and limiting operations.

[0032] The extension arm 403 is connected to the clamping and positioning column 401 through a rotating arm, and the rotating arm is rotatably connected to the clamping and positioning column 401. The clamping arm includes a fixed clamping plate 405 and a movable clamping plate 406. The fixed clamping plate 405 is connected to the extension arm 403 and has a predetermined operating size. The movable clamping plate 406 is rotatably connected to the clamping and positioning column 401 through an adjusting cylinder 407, has a predetermined operating size, and can perform a rotation adjustment operation within a predetermined range. In the later operation process, the rotating arm is pushed to perform corresponding rotation adjustment through the telescopic adjustment of the connecting cylinder 404, and then the clamping arm as a whole can be driven to perform the corresponding operation position adjustment. Then, one end of the movable clamping plate 406 is driven to perform corresponding rotation adjustment through the telescopic adjustment of the adjusting cylinder 407 to achieve corresponding clamping and release. When the regulating cylinder 407 is extended, the fixed clamping plate 405 is fitted with the movable clamping plate 406, thereby clamping the plastic packaging bag accordingly. When the regulating cylinder 407 is retracted, the fixed clamping plate 405 is separated from one end of the movable clamping plate 406, thereby releasing the plastic packaging bag accordingly.

[0033] The material storage bagging unit includes three components: a feeding barrel 501, a material storage tray 503 and a vibrating material discharge tray 504. The feeding barrel 501 is connected to the base 1 through a pillar 505, has a predetermined bearing space, is open at both ends, and is provided with a guide pipe 502 with a predetermined inclination angle and operating length. The material storage tray 503 is connected to the base 1 through a central column, has a predetermined operating size and bearing space, and is provided with a corresponding material discharge through hole. The vibrating material discharge tray 504 is placed below the operating position of the material storage tray 503, is provided with a plurality of shock-absorbing springs, and is connected to the central column, has a predetermined operating size and supporting force. The shock-absorbing spring is placed between the material storage tray 503 and the vibrating material discharge tray 504, and a plurality of the shock-absorbing springs are evenly distributed between the material storage tray 503 and the vibrating material discharge tray 504. The vibrating material discharge tray 504 is sleeved outside the central column, and the operating size is adapted to the material storage tray 503. In a further preferred embodiment, a rotating baffle is provided at the connection between the feed barrel 501 and the feed guide tube 502, and the storage and feeding status of the feed barrel 501 can be controlled by rotating and adjusting the rotating baffle. In the later operation process, the small packaged food to be packaged is put into the feed barrel 501, and falls into the storage tray 503 through the feed guide tube 502. By vibrating the storage tray 503, the small packaged food can be dropped and discharged through the provided discharge through hole. The vibration feeding method of the vibration discharge tray 504 can refer to the existing vibration feeding method, and a corresponding counting sensor can be provided at the discharge through hole to record the number of small packaged foods that are vibration fed. The above is the prior art and will not be repeated in this application.

[0034] The material receiving unit 6 includes three components: a connecting pipe 601, a material blocking barrel 602, and a telescopic discharge pipe 603. The connecting pipe 601 is connected to the discharge through hole of the material storage tray 503, has a predetermined bending arc, is hollow and open at both ends. The material blocking barrel 602 is connected to the connecting pipe 601, is provided with a receiving cavity of a predetermined operating size, and is provided with a corresponding charging through hole. The telescopic discharge pipe 603 is connected to the charging through hole provided by the material blocking barrel 602, has a predetermined operating length and elasticity, and is open at both ends. In the later operation process, the small packaged food will fall to the material blocking barrel 602 through the connecting pipe 601, and fall into the plastic packaging bag through the telescopic discharge pipe 603 for packaging. In a further preferred embodiment, a corresponding counting sensor can also be set at the connection between the material blocking barrel 602 and the connecting pipe 601, so as to facilitate the calibration of the number of small packaged foods that fall, and when the material is stuck in the discharge, it can also be discovered and repaired in time.

[0035] The sealing unit 7 includes four components: a bagging clamping arm 701, an auxiliary box 702, an adsorption bag opening arm 703 and a hot pressing packaging arm 705. The bagging clamping arm 701 is slidably connected to the working surface of the base 1, has a predetermined working length and elasticity, can be adjusted within a predetermined range, and is multiple. In a further preferred embodiment, the bagging clamping arm 701 is slidably connected to the working surface of the base 1 through a cushion block, and is rotatably connected to the cushion block to adapt to the clamping processing of plastic packaging bags of different working widths. Every two bagging clamping arms 701 form a group and are arranged opposite to each other, and can cooperate to perform corresponding clamping operations. The auxiliary box 702 is placed on the working surface of the base 1, is hollow and open at both ends, and has a predetermined working distance between it and the bagging clamping arm 701, and is provided with a predetermined receiving cavity. The suction bag opening arm 703 is placed in the receiving chamber of the auxiliary box 702, has a predetermined operating size and supporting force, and is provided with a corresponding bag opening suction cup 704, and has a predetermined elasticity, which is multiple. The hot pressing packaging arm 705 is placed in the receiving chamber of the auxiliary box 702, has a predetermined operating size and supporting force, and is placed below the operating position of the suction bag opening arm 703, and has a predetermined elasticity, which is multiple. The telescopic weighing platform 8 is placed in the receiving chamber of the auxiliary box 702, and has a predetermined operating distance between it and the hot pressing packaging arm 705, and has a predetermined supporting force and elasticity. The transport component 9 is two transport tracks, and the operating and transporting directions of the two transport tracks are opposite, one for transporting qualified products and the other for transporting defective products. The transport track for transporting defective products is placed at the outer position of the operating direction, and the overall operating height is higher than the transport track for transporting qualified products. The operating position of the transport track for transporting qualified products corresponds to the operating position of the auxiliary box 702. In the later operation process, when the clamping arm moves the plastic packaging bag to the predetermined working position, the bagging clamping arm 701 performs the corresponding extension operation to clamp the plastic packaging bag, and then performs the corresponding contraction operation to drive the entire plastic packaging bag to move to the corresponding working position for subsequent processing.

[0036] Based on the above-mentioned plastic bag packaging machine for food packaging, the present invention proposes a packaging detection method for the plastic bag packaging machine for food packaging, and the specific steps are as follows: First, the plastic packaging bags are stacked and placed in the loading barrel 302 to be fed, and at the same time, the reverse brush roller 308 is started to brush in the reverse direction to scatter the stacked plastic packaging bags, so that the plastic packaging bags pass through the open end of the loading barrel 302, slide out through the open end of the loading barrel 302, and are controlled by the feeding roller 303, and are transported along the feeding transport plate 304 to the direction close to the clamping feeding unit 4; Subsequently, when the plastic packaging bag is conveyed to the predetermined working position, the clamping and feeding unit 4 is started; the position of the extension arm 403 is adjusted to drive the clamping arm as a whole to move toward the direction close to the plastic packaging bag, and when it moves to the predetermined working position, it stops, and the clamping arm clamps the plastic packaging bag, and then the extension arm 403 is adjusted again to drive the clamping arm and the plastic packaging bag as a whole to move toward the direction close to the sealing unit 7; When the clamping arm drives the plastic packaging bag to move to the predetermined working position and then stops, the bagging clamping arm 701 clamps the plastic packaging bag, and then the bagging clamping arm 701 slides with the plastic packaging bag toward the auxiliary box 702; after sliding to the predetermined working position, the suction bag opening arm 703 starts to suction and open the bag; Next, the telescopic discharge tube 603 is extended and inserted into the opened plastic packaging bag. At the same time, the telescopic weighing platform 8 is extended to hold the plastic packaging bag. The vibrating discharge tray 504 is started to vibrate and load the material. The telescopic weighing platform 8 weighs the bag weight in real time. When the number of bagged food in the bag reaches a predetermined value, the vibrating discharge tray 504 stops working, and the telescopic discharge tube 603 is retracted to exit the plastic packaging bag. Subsequently, when the vibrating discharge tray 504 stops operating, the telescopic weighing platform 8 weighs and records the bag weight again; if the weighed weight reaches the predetermined value and is within the tolerance range, the hot pressing packaging arm 705 starts to seal the bagged plastic packaging bag, and then the telescopic clamping arm is released, the telescopic weighing platform performs a contraction operation, and the bagged plastic packaging products fall off and are transported and shipped via the transport component 9; if the weighed weight reaches the predetermined value but is outside the tolerance range, or in order to reach the predetermined weight value, the telescopic clamping arm clamps the bagged plastic packaging bag and performs a stretching operation, placing the unqualified bagged products at the corresponding position of the transport component 9, and transporting them to the defective product recovery area via the transport component 9, and manually recovering and adjusting them; Finally, repeat the above steps in sequence, and so on, until the system stops working.

[0037] In a further preferred embodiment, the clamping and feeding units 4 are multiple, preferably two, and are respectively placed on the left and right sides of the feeding unit 3, and can alternately perform corresponding feeding operations to further improve the overall packaging efficiency. At the same time, the clamping and packaging components are also multiple.

[0038] The telescopic weighing platform 8, the vibrating discharge tray 504, the hot pressing packaging arm 705 and the telescopic clamping arm are all used to transmit and execute instructions through wireless signals; the analysis and judgment steps of the telescopic weighing platform 8 specifically include: Set input target weight , and the number n of small packages of food required to be loaded inside the plastic packaging bag; when the number of small packages of food shaken and dropped by the vibrating discharge tray 504 reaches a predetermined number, the vibrating discharge tray 504 stops operating, the telescopic weighing platform 8 starts, and the total weight after bagging is obtained by weighing. ;

[0039] in, is the total weight after bagging, is the weight of the plastic bag, is the total weight of the small packages of food loaded; Set the allowable error percentage E, combined with the target weight , to judge the eligibility of the bagged items, the specific formula is as follows: ; in, is the target weight, is the total weight after bagging, It is to set the maximum allowable error value; The final judgment is that the output value of 0 is a qualified product, and the output value of 1 is a defective product.

[0040] During the continuous bagging operation, the overall loading accuracy is controlled by calculating the standard deviation to improve the overall loading stability. The specific calculation formula is as follows: ; Where σ is the standard deviation, is the total weight of the ith package after bagging, is the average weight of the products that have been bagged, and N is the total number of packages that have been bagged; ; in, is the total weight of the i-th package after bagging, and N is the total number of packages that have completed bagging.

[0041] In a further preferred embodiment, the bagging clamping arm 701 is also provided with a counting sensor, which can record the number of plastic packaging bags that have been bagged. After completing every 1,000 bagging operations, the standard deviation is calculated, and the weight difference between the bagged products can be intuitively concluded through the calculated deviation value. When the calculated deviation value is relatively small, it means that the product weight is relatively uniform, which can further reduce the defective rate and scrap rate of the product and improve the consistency and reliability of the product.

[0042] Each component in the present application can be driven by a corresponding motor, which is a prior art and will not be described in detail in the present application.

[0043] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes may be made to it in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A plastic bag packaging machine for food packaging, comprising a base and a base plate with a predetermined bearing space and supporting force, characterized in that include: A feeding assembly, comprising a feeding unit placed on the working surface of the base and having a predetermined inclination angle and a bearing space; A clamping feeding unit placed on the working surface of the base and having a predetermined working distance between the clamping feeding unit and the feeding unit; The clamping and packaging assembly comprises a material storage and loading unit which is placed on the working surface of the base and has a predetermined working size and a carrying space; a material receiving unit which is movably arranged on the working surface of the base and has a predetermined working distance with the material storage and loading unit; and a material sealing unit which is placed on the working surface of the base and has a predetermined working distance with the material receiving unit. A transport component is placed on the working surface of the base and corresponds to the working position of the clamping packaging component, and is a multi-lane transport structure; The sealing unit is provided with a corresponding telescopic weighing platform.

2. A plastic bag packaging machine for food packaging according to claim 1, characterized in that: The feeding unit comprises: A feeding positioning column is placed on the working surface of the substrate, has a predetermined working length and supporting force, and can perform corresponding supporting and limiting operations; A loading bucket is placed on the working surface of the feeding positioning column, is provided with a bearing cavity of a predetermined working size, and is provided with a corresponding open end, and is of a special shape; A feeding roller is rotatably connected to the working surface of the feeding positioning column through a rotating column, and is placed at a lower position in the working direction of the upper barrel, and there are multiple feeding rollers; A feeding and transporting plate, connected to the base plate through a supporting column, has a predetermined working length, and a corresponding conveying crawler is provided on the working surface, and is placed below the working direction of the feeding roller; A baffle plate is placed on the working surface of the substrate, has a predetermined working length, and has a predetermined working distance with the feeding and transporting plate; A counter-brush roller is provided at a predetermined working position of the bearing cavity of the loading barrel, and the counter-brush roller includes a rotating roller and a brush roller. The rotating roller is rotatably connected to the loading barrel and has a predetermined working length and supporting force; the brush roller is placed outside the rotating roller, has a predetermined working size, and can rotate following the rotation of the rotating roller.

3. A plastic bag packaging machine for food packaging according to claim 2, characterized in that: The clamping feeding unit comprises: A clamping and positioning column is placed on the working surface of the substrate, has a predetermined working length and supporting force, and can perform corresponding positioning and supporting operations; The connecting arm is connected to the clamping and positioning column, has a predetermined working length, and can perform corresponding connecting and limiting operations; The extension arm is rotatably connected to the connection arm through a connection cylinder, has a predetermined operating length and supporting force, and can perform corresponding extension adjustment operations; The clamping arm is rotatably connected to the extension arm, has a predetermined operating size, and can perform corresponding clamping and limiting operations.

4. A plastic bag packaging machine for food packaging according to claim 3, characterized in that: The extension arm is connected to the clamping and positioning column through a rotating arm, and the rotating arm and the clamping and positioning column are rotatably connected; The clamping arm includes a fixed clamping plate and a movable clamping plate. The fixed clamping plate is connected to the extension arm and has a predetermined working size. The movable clamping plate is rotatably connected to the clamping positioning column through an adjusting cylinder, has a predetermined working size, and can perform rotation adjustment operations within a predetermined range.

5. A plastic bag packaging machine for food packaging according to claim 3, characterized in that: The material storage bagging unit comprises: A feeding barrel, connected to the base through a support, has a predetermined bearing space, is provided with a corresponding open end, and is provided with a feed guide tube with a predetermined inclination angle and operating length; The material storage tray is connected to the base through a central column, has a predetermined operating size and carrying space, and is provided with corresponding discharge holes; The vibrating discharging tray is placed below the working position of the material storage tray, is provided with a plurality of shock-absorbing springs, and is connected to the central column, and has a predetermined working size and supporting force.

6. A plastic bag packaging machine for food packaging according to claim 5, characterized in that: The material receiving unit comprises: A connecting pipe is connected to the discharge through hole of the material storage tray, has a predetermined bending arc, is hollow and has two open ends; A material blocking barrel is connected to the connecting pipe, is provided with a receiving cavity of a predetermined working size, and is provided with a corresponding loading through hole; The telescopic discharge pipe is communicated with the charging through hole of the material blocking barrel, has a predetermined operating length and telescopicity, and is open at both ends.

7. A plastic bag packaging machine for food packaging according to claim 1, characterized in that: The sealing unit comprises: A bagging clamping arm is slidably connected to the working surface of the base, has a predetermined working length and elasticity, can be adjusted within a predetermined range, and is in multiple numbers; An auxiliary box is placed on the working surface of the base, is hollow and open at both ends, has a predetermined working distance with the bagging clamping arm, and is provided with a predetermined receiving cavity; The suction bag opening arm is placed in the receiving chamber of the auxiliary box, has a predetermined operating size and supporting force, is provided with a corresponding bag opening suction cup, and has a predetermined elasticity, and is in multiple numbers; A plurality of hot-pressing packaging arms are placed in the receiving chamber of the auxiliary box, have a predetermined operating size and supporting force, are placed below the operating position of the suction bag opening arm, and have a predetermined elasticity; The telescopic weighing platform is placed in the receiving chamber of the auxiliary box, and has a predetermined operating distance with the hot pressing packaging arm, and has a predetermined supporting force and telescopicity; The transport components are two transport tracks, and the operating transport directions of the two transport tracks are opposite.

8. A packaging detection method for a plastic bag packaging machine for food packaging according to any one of claims 1 to 7, characterized in that The following steps are involved: S1. Stack the plastic packaging bags and put them into the loading barrel to wait for feeding. At the same time, the reverse brush roller starts to brush in the reverse direction to break up the stacked plastic packaging bags, so that the plastic packaging bags pass through the open end of the loading barrel, slide out through the open end of the loading barrel, and are controlled by the feeding roller, and are transported along the feeding transport plate toward the direction close to the clamping feeding unit; S2. When the plastic packaging bag is transported to the predetermined working position, the clamping and feeding unit is started; the clamping arm is driven to move toward the direction close to the plastic packaging bag as a whole by adjusting the position of the extension arm, and stops when it moves to the predetermined working position, and the clamping arm picks up the plastic packaging bag, and then the extension arm is adjusted again to drive the clamping arm and the plastic packaging bag as a whole to move toward the direction close to the sealing unit; S3, when the clamping arm drives the plastic packaging bag to move to the predetermined working position and then stops, the bagging clamping arm clamps the plastic packaging bag, and then the bagging clamping arm slides with the plastic packaging bag toward the auxiliary box; after sliding to the predetermined working position, the suction bag opening arm starts to suction open the bag; S4, the telescopic discharge tube is extended and inserted into the opened plastic packaging bag, and the telescopic weighing platform is extended to hold the plastic packaging bag, the vibrating discharge plate is started to vibrate and load the material, and the telescopic weighing platform weighs the bag weight in real time. When the number of bag-in-bag food reaches a predetermined value, the vibrating discharge plate stops working, and the telescopic discharge tube is retracted to exit the plastic packaging bag; S5. After the vibrating discharging tray stops operating, the telescopic weighing platform will weigh and record the bag weight again; if the weighed weight reaches the preset value and is within the tolerance range, the hot pressing packaging arm will start to seal the bagged plastic packaging bag, and then the telescopic clamping arm will be released, the telescopic weighing platform will shrink, and the bagged plastic packaging food will fall off and be transported out through the transport component; if the weighed weight reaches the preset value but is outside the tolerance range, or does not reach the preset weight value, the telescopic clamping arm will pick up the bagged plastic packaging bag and stretch it, placing the unqualified bagged products at the corresponding position of the transport component, and transporting them to the defective product recycling area through the transport component for manual recycling and adjustment; S6. Repeat the above steps in this way until the system stops working.

9. The packaging detection method of a plastic bag packaging machine for food packaging according to claim 8, characterized in that: The telescopic weighing platform, the vibrating discharge tray, the hot pressing packaging arm and the telescopic clamping arm all transmit and execute instructions through wireless signals; the analysis and judgment steps of the telescopic weighing platform specifically include: S501, set input target weight , and the number of small packages of food that need to be loaded inside the plastic packaging bag n; when the number of small packages of food shaken and dropped by the vibrating discharge plate reaches the predetermined number, the vibrating discharge plate stops working, the telescopic weighing platform starts, and the total weight after bagging is weighed. ; in, is the total weight after bagging, is the weight of the plastic bag, is the total weight of the small packages of food loaded; S502, set the allowable error percentage E, combined with the target weight , to judge the eligibility of the bagged items, the specific formula is as follows: , in, is the target weight, is the total weight after bagging, It is to set the maximum allowable error value; S503: Determine that the output value of 0 is a qualified product, and the output value of 1 is a defective product.

10. The packaging detection method of a plastic bag packaging machine for food packaging according to claim 9, characterized in that: During the continuous bagging operation, the overall loading accuracy is controlled by calculating the standard deviation to improve the overall loading stability. The specific calculation formula is as follows: , Where σ is the standard deviation, is the total weight of the ith package after bagging, is the average weight of the products that have been bagged, and N is the total number of packages that have been bagged; , in, is the total weight of the i-th package after bagging, and N is the total number of packages that have completed bagging.

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