Empty bag detecting and removing system

Abstract

The invention discloses an empty bag detecting and removing system which comprises a detecting device, a touch control device, an encoder, a driving part, a removing device and a control unit. The first sensor, the touch control device, the encoder and the removing device are connected with the control unit. The control unit is configured to execute the following steps that starting and stopping of functions of adjusting and detecting empty bag or edge pressing angle parameters, packaging quantity signals of packaged products and angle data of a driving part are received; and according to the adjustment of the angle parameter of the empty bag or the edge pressing and the opening and closing of the detection function, the packing quantity signal of the packing product and the angle data of the driving part, the packing product with the empty bag and / or the edge pressing is detected, and the packing product with the empty bag and / or the edge pressing is fed back to the removing device. According to the invention, packaging bags with pressed edges and empty bags can be detected at the same time, the installation space and the use cost are saved, unqualified pressed edge and empty bag products can be automatically removed, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging equipment, and more specifically, to an empty bag detection and rejection system. Background Art

[0002] A packaging machine is a machine that packages products to protect and beautify them. Packaging machinery refers to machinery that can complete all or part of the product and commodity packaging process. The packaging process includes major processes such as filling, wrapping, and sealing, as well as related processes such as cleaning, stacking, slitting, and disassembly. Using mechanical packaging products can improve productivity, reduce labor intensity, adapt to the needs of large-scale production, and meet the requirements of cleanliness and hygiene.

[0003] At present, packaging machines occasionally experience edge pressing (small pieces extending into the heat-sealing area of ​​the packaging bag) and empty bags during bagging and sealing. Currently, commercially available equipment does not have the function of edge pressing detection for packaging bags of multiple specifications, and human workers are required to pick them one by one, which poses a risk of missing edge pressing products.

[0004] The detection device of the existing packaging machine adopts a detection roller and a pressure roller that are arranged to rotate in opposite directions. The detection roller and the pressure roller rotate in opposite directions by a motor. A detection groove that matches the shape and size of the inner packaging of the four-side seal is arranged on the roller surface of the detection roller. When working, the detection roller and the pressure roller are close to each other. When the inner packaging exceeds the heat-sealing area of ​​the four-side seal packaging bag, it cannot enter the detection groove completely, causing the detection roller to move radially, triggering the first sensor and being detected. The above technical solution has the following problems: (1) It can only detect the size of packaging bags of the same specification. Different specifications of molds must be customized for products of different specifications, which is very expensive; (2) It cannot be detected after the size of the packaging bag being detected (including the outer size of the small bag and the thickness of the packaging) changes. Therefore, the above technical problems are technical problems that need to be solved urgently in this field.

[0005] Chinese patent document (authorization announcement number: 205312049U; authorization announcement date: 2016.06.15) discloses an empty bag detection and rejection mechanism of a packaging machine, the packaging machine includes a frame, an empty bag detection device, a cutter device, a rejection flap, a flap driving cylinder, a finished product output slot and an empty bag collection box, the empty bag detection device and the cutter device are arranged on the frame in sequence from top to bottom, a rejection flap is arranged below the cutter device, the rejection flap and the flap driving cylinder are arranged on the frame, and a finished product output slot and a bag collection box are arranged in sequence below the rejection flap in the horizontal direction, the empty bag detection device includes an empty bag detection sensor, a detection head and a sensor bracket; this scheme can only detect empty bags, but cannot detect edge pressing, and at the same time, the detection head does not contact the detection object, so that the detection accuracy of the empty bag detection sensor is poor. Summary of the invention

[0006] In view of this, the present invention provides an empty bag detection and rejection system to solve the problems that the prior art can only detect the size of packaging bags of the same specification, different specifications of molds must be customized for products of different specifications, the cost is high, and the packaging bag cannot be detected after the size of the detected bag changes.

[0007] The present application provides an empty bag detection and rejection system, including a detection device, a touch device, an encoder, a driving member, a rejection device and a control unit;

[0008] The detection device includes a first sensor and a trigger device connected to the first sensor. When the first sensor controls the trigger device to contact the packaged product, the first sensor is used to collect a filling amount signal of the packaged product.

[0009] The touch device is used to configure the adjustment of the empty bag or edge pressing angle parameters and the opening and closing of the detection function;

[0010] An encoder connected to the driving member and used to generate angle data of the driving member;

[0011] Rejection device, used to reject packaged products with empty bags and / or pressed edges;

[0012] The first sensor, the touch device, the encoder and the rejection device are respectively connected to the control unit, and the control unit is configured to perform the following steps:

[0013] Receive and configure the opening and closing of the adjustment and detection functions of the empty bag or the edge pressing angle parameters, the filling quantity signal of the packaged product, and the angle data of the driving part;

[0014] According to the configuration of adjusting and detecting the empty bag or edge pressing angle parameters, the loading signal of the packaged product and the angle data of the driving part, the packaged products with empty bags and / or edge pressing are detected and fed back to the rejection device.

[0015] Compared with the prior art, the empty bag detection and rejection system provided by the present invention achieves at least the following beneficial effects:

[0016] The empty bag detection and rejection system provided by the present invention can not only detect the packaging bags with edge pressing and empty bags at the same time through the cooperation between the detection device, encoder, touch device, rejection device and control unit, saving installation space and use cost, but also can automatically reject unqualified edge pressing and empty bag products, reducing the labor intensity of workers, and at the same time ensuring the accuracy of detection, thereby improving the rejection rate of unqualified finished products, thereby reducing product quality risks. Since the trigger device directly contacts the packaging bag to be detected, the accuracy of the first sensor detecting the packaging bag to be detected is more accurate. The empty bag detection and rejection system can also be applied to the edge pressing and empty bag detection of four-side sealed packaging bags of multiple specifications.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the technical effects described above at the same time.

[0018] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0020] Figure 1 It is a logic block diagram of the empty bag detection and rejection system provided by the present invention;

[0021] Figure 2 is a schematic diagram of an interface of a touch control device provided by the present invention;

[0022] Figure 3 It is a structural schematic diagram of the empty bag detection and rejection system provided by the present invention;

[0023] Figure 4 yes Figure 3 A partial enlarged view of the middle part;

[0024] Figure 5 is a side view of the empty bag detection and rejection system provided by the present invention;

[0025] Figure 6 yes Figure 5 A partial enlarged view of point B in the middle. DETAILED DESCRIPTION

[0026] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0027] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0028] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0029] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0030] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0031] Reference Figure 1-Figure 3 As shown, Figure 1 It is a logic block diagram of the empty bag detection and rejection system provided by the present invention; Figure 2 is a schematic diagram of an interface of a touch control device 3 provided by the present invention; Figure 3 : is a structural schematic diagram of an empty bag detection and rejection system provided by the present invention; this embodiment provides an empty bag detection and rejection system, including a detection device 2, a touch device 3, an encoder 410, a driving member (not shown in the figure), a rejection device 421 and a control unit 5;

[0032] The detection device 2 includes a first sensor 25 and a trigger device 26 connected to the first sensor 25. When the first sensor 25 controls the trigger device 26 to move downward, the trigger device 26 contacts the packaged product. The first sensor 25 is used to collect a filling amount signal of the packaged product.

[0033] The touch device 3 is used to configure the adjustment of the empty bag or edge pressing angle parameters and the opening and closing of the detection function;

[0034] An encoder 410, which is connected to the driving member and is used to generate angle data of the driving member;

[0035] The rejecting device 421 is used to reject the packaged products with empty bags and / or pressed edges;

[0036] The first sensor 25, the touch device 3, the encoder 410 and the rejection device 421 are respectively connected to the control unit 5, and the control unit 5 is configured to perform the following steps:

[0037] Receive and configure the opening and closing of the adjustment and detection functions of the empty bag or the edge pressing angle parameters, the filling quantity signal of the packaged product, and the angle data of the driving part;

[0038] According to the configuration of adjusting and detecting the empty bag or edge pressing angle parameters, the packing quantity signal of the packaged product and the angle data of the driving part, the packaged products with empty bags and / or edge pressing are detected and fed back to the rejection device 421.

[0039] The detection device 2 is used to detect whether there are empty bags and / or packaged products with pressed edges, and the packaged products may be packaging bags.

[0040] The detection device 2 includes a first sensor 25 and a trigger device 26 connected to the first sensor 25. The first sensor 25 is a contact sensor, which can be a Keyence general-purpose digital contact sensor GT-70A. The Keyence general-purpose digital contact sensor GT-70A can be suitable for precision measurement tasks in industrial automation scenarios, and can provide high-precision and high-stability measurement results. It has the ability to adapt to up and down movements.

[0041] The trigger device 26 can be a contact trigger device, which is used to contact the packaging bag after heat sealing; the first sensor 25 is connected to the trigger device 26. Optionally, along the vertical direction of the first sensor 25, the trigger device 26 is located below the first sensor 25. The first sensor 25 and the control unit 5 can be electrically connected. When the first sensor 25 controls the trigger device 26 to contact the packaging bag after heat sealing, specifically, when the first sensor 25 controls the trigger device 26 to move downward, the trigger device 26 contacts the packaging bag after heat sealing. When the first sensor 25 contacts the packaging bag through the trigger device 26, the first sensor 25 can accurately measure the filling signal of the packaging bag and feed it back (the filling signal of the packaging bag) to the control unit 5. The filling signal of the packaging bag can determine whether the object to be detected is an empty bag or contains material (such as a plaster patch), and can also determine whether the object to be detected has a pressed edge, such as the left side pressed edge of the packaging bag, the right side pressed edge of the packaging bag, or the left and right sides pressed edge of the packaging bag.

[0042] Reference Figure 2 As shown, the touch device 3 can be a touch screen or a control panel, which can be connected to the control unit 5 by communication. The touch screen can be a human-computer interaction platform. The touch screen is used to adjust the parameters of the empty bag and / or the edge pressing angle and turn on or off the detection function. For example, a parameter input box related to the empty bag or the edge pressing angle is set on the touch screen, and the user directly enters the required parameter value through the input box. These parameters can be monitored and adjusted in real time by the control unit 5. A switch button is provided through the interface of the touch screen, and the user can turn on or off the empty bag detection or edge pressing angle detection function through these interface elements. Specifically, the function switch, detection area (such as the displacement area 33, the detection result marking area 34 and the crooked bag and empty bag detection area 32) of the detection device 2, the mechanical origin angle (such as 0°), the slitting angle (such as 60°), the edge sealing start angle (such as 50°) and the edge sealing end angle (such as 70°) can be set on the touch screen. The touch screen can adjust the detection area and accuracy, improve the automation of the equipment, and make the operation more accurate and convenient to use. Through the touch screen interface, users can directly input or select the specific value of the empty bag or edge pressing angle, and the system will adjust according to the input value. Adjust the relevant parameters of the empty bag or edge pressing angle according to the actual situation to apply to the edge pressing and empty bag detection of multiple specifications of four-side sealed packaging bags.

[0043] It should be noted that: continue to refer to Figure 2 As shown, the mechanical origin (0°) in the figure is used for synchronous system rejection station and detection result shift operation, that is, when the first detection sensor 25 is at the mechanical origin, the rejection first sensor 25 needs to be located at the black color mark in the figure. The edge sealing start angle (50.0) to the edge sealing end angle (70.0) is the left edge pressure monitoring interval of the plaster patch, and the cutting angle (60.0) to the black color mark interval is the right edge pressure monitoring interval of the plaster patch; the color mark to the crooked bag and empty bag detection area 32 (100) is the crooked bag and empty bag monitoring area, and the area between the crooked bag and empty bag detection area 32 (100) and the mark (110) is the detection result marking area 34; the area between the mark (110) and the shift area (120) is the shift area 33.

[0044] The encoder 410 is connected to the driving component and is used to generate angle data of the driving component. The driving component can be a motor. For example, the encoder 410 can be installed on the motor to collect the angle data of the motor. The model of the encoder 410 can be SICK DFS60E-S4EC02000 encoder.

[0045] The above-mentioned rejection device 421 is used to reject packaged products with left pressed edges, empty bags, right pressed edges, empty bags and left pressed edges, or empty bags and right pressed edges; a waste box 422 can be placed under the rejection device 421 to facilitate placing the rejected packaged products in the waste box 422.

[0046] The first sensor 25, the touch device 3, the encoder 410 and the rejecting device 421 are respectively connected to the control unit 5, and the control unit 5 can be a programmable logic controller PLC, and the model of the PLC can be SIEMENS s7-200 cnPLC. The control unit 5 is configured to perform the following steps:

[0047] Receive and configure the opening and closing of the adjustment and detection functions of the empty bag or the edge pressing angle parameters, the filling amount signal of the packaged product fed back by the first sensor 25, and the angle data of the driving member fed back by the encoder 410;

[0048] According to the configuration of the adjustment and detection function of the empty bag or edge pressing angle parameters, the loading signal of the packaging product and the angle data of the driving part, the packaging product with empty bags and / or edge pressing is detected. For example, the touch device configures the empty bag or edge pressing angle parameters (such as the mechanical origin angle, the edge sealing start angle, the edge sealing end angle and the slitting angle, etc.) according to the specifications of the packaging bag to be detected, and turns on the detection function switch. The detection device performs detection. When the first sensor 25 controls the trigger device 26 to contact the heat-sealed packaging bag, it can also be: the first sensor 25 obtains the thickness data signal of the packaging bag and feeds it back To the control unit 5, compare the thickness data signal of the packaging product fed back by the first sensor 25 with the thickness data signal of the standard packaging product. If the thickness data signal of the pressed edge in the packaging product fed back by the first sensor 25 is greater than the thickness data signal of the pressed edge in the standard packaging product, then the detected packaging product has a filling signal, which is a packaging product with a pressed edge and is marked; if the thickness data signal of the pressed edge in the packaging product fed back by the first sensor 25 is equal to the thickness data signal of the pressed edge in the standard packaging product, then the detected packaging product has no filling signal, which is a packaging product without a pressed edge.

[0049] If the thickness data signal inside the packaged product fed back by the first sensor 25 is equal to the thickness data signal inside the standard packaged product, then the packaged product being tested has a filling signal, and there are no empty bags in the packaged product; if the thickness data signal inside the packaged product fed back by the first sensor 25 is significantly smaller than the thickness data signal inside the standard packaged product, then the packaged product being tested has no filling signal, and there are empty bags in the packaged product.

[0050] The packaging products with empty bags and / or pressed edges are fed back to the rejection device 421 , and the rejection device 421 subsequently rejects the packaging products with left pressed edges, empty bags, right pressed edges, empty bags and left pressed edges, or empty bags and right pressed edges into the waste box 422 .

[0051] The first sensor 25 is connected to the trigger device 26, and the touch device configures the empty bag or edge pressing angle parameters according to the specifications of the packaging bag to be detected, and turns on the detection function switch, and the detection device performs detection. When the first sensor 25 contacts the packaging bag through the trigger device 26 (for example, when the first sensor 25 controls the trigger device 26 to move downward, the trigger device 26 contacts the heat-sealed packaging bag), the first sensor 25 can accurately measure the filling amount signal of the packaging bag and feed it back to the control unit 5, wherein the filling amount signal includes a thickness data signal; the encoder 410 generates the angle data of the motor, and the angle data of the motor includes a preset angle, which can be 10°-50°, or 300°-35 0°, when the preset angle is 300°-350°, the control unit 5 reads the thickness data signal detected by the first sensor 25, such as the control unit 5 reads the thickness data signal of the left edge of the packaging bag, the right edge of the packaging bag, or the left and right edges of the packaging bag detected by the first sensor 25. If the thickness data signal of the left edge of the packaging bag, the right edge of the packaging bag, or the left and right edges of the packaging bag fed back by the first sensor 25 is greater than the thickness data signal of the left edge of the standard packaging bag, the right edge of the packaging bag, or the left and right edges of the packaging bag, then the detected packaging bag has a filling signal; if there is a filling signal, it is determined that the packaging bag has a pressed edge, and the pressed edge is marked; if no filling signal is detected, it is determined that there is no pressed edge. When the preset angle is 10°-50°, the control unit 5 reads the thickness data signal detected by the first sensor 25 in the packaging bag. For example, when detecting whether there is packaging in the packaging bag, the thickness data signal inside the packaging bag fed back by the first sensor 25 is equal to the thickness data signal inside the standard packaging bag. If there is a filling signal in the detected packaging bag, there is no empty bag. Otherwise, it is judged as an empty bag and marked. After completing the edge pressing and empty bag judgment, the rejection device 421 is used to output a signal to the control unit 5 to reject the packaging bags marked as empty bags and / or edge pressing. Otherwise, they reach the finished product area.

[0052] It should be noted that the detection function switch of the touch device can be in a normally open state. Of course, after a batch of packaged products are detected, the detection function switch of the touch device can be switched to a closed state. This embodiment does not make specific limitations. When changing the model of the packaged product, the user adjusts the parameters related to the empty bag or the edge pressing angle according to the actual situation to apply to the edge pressing and empty bag detection of four-side sealed packaging bags of multiple specifications.

[0053] Compared with the prior art, the empty bag detection and rejection system provided in this embodiment achieves at least the following beneficial effects:

[0054] The empty bag detection and rejection system provided in this embodiment can not only detect the packaging bags with edge pressing and empty bags at the same time through the cooperation between the detection device 2, the encoder 410, the touch device 3, the rejection device 421 and the control unit 5, saving installation space and use cost, but also can automatically reject unqualified edge pressing and empty bag products, reducing the labor intensity of workers, and at the same time ensuring the accuracy of detection, thereby improving the rejection rate of unqualified finished products, thereby reducing product quality risks. Since the trigger device 26 directly contacts the packaging bag to be detected, the accuracy of the first sensor 25 in detecting the packaging bag to be detected is more accurate. The empty bag detection and rejection system can also be applied to the edge pressing and empty bag detection of four-side sealed packaging bags of multiple specifications.

[0055] In an optional embodiment, according to the configuration, adjusting the empty bag or edge pressing angle parameters and starting and closing the detection function, the loading signal of the packaged product, and the angle data of the driving member, detecting the packaged product with an empty bag and / or edge pressing, and feeding back the packaged product with the empty bag and / or edge pressing to the rejection device includes:

[0056] The encoder includes at least a pressing edge detection area 31, a crooked bag and empty bag detection area 32 and a shift area 33 according to the running sequence of the packaged product;

[0057] In the edge pressing detection area 31, it is determined whether the first sensor 25 detects a filling amount signal at the edge of the packaged product. If a filling amount signal at the edge of the packaged product is detected, the packaged product is an edge pressing product; if no filling amount signal at the edge of the packaged product is detected, the packaged product is a non-edge pressing product.

[0058] In the crooked bag and empty bag detection area 32, it is determined whether the first sensor 25 detects a filling amount signal in the packaged product. If the filling amount signal in the packaged product is detected, the packaged product is a non-empty bag product; if the filling amount signal in the packaged product is not detected, the packaged product is an empty bag product.

[0059] In the displacement area 33, according to the filling quantity signal, the control unit controls the rejecting device to reject the empty bag product and the edge pressed product.

[0060] Specifically, refer to Figure 2As shown, A and B represent two consecutive pieces of packaged products (such as plasters) in the production process, which are subsequently cut by a cutter and a slitting line, and the plaster moves from left to right. The algorithm program is executed in a sequential loop. To ensure that each execution cycle of the algorithm program can scan a valid signal, the walking sequence of the plaster is divided into a pressing edge detection area 31, a crooked bag and empty bag detection area 32, a detection result marking area 34 and a displacement area 33 based on an encoder. Among them, the pressing edge detection area 31 is used to detect whether the packaged product is a pressing edge product; the crooked bag and empty bag detection area 32 is used to detect whether the packaged product is an empty bag product. The detection result marking area 34 completes the logical judgment of empty bags and pressing edge products according to the scanning loading signals of the pressing edge detection area 31 and the crooked bag and empty bag detection area 32;

[0061] The shift area 33 is used to remove edge pressed products and empty bag products. The edge pressed detection area 31 of the same piece of plaster includes two front and rear compression detection areas, the edge pressed detection area 31 and the crooked bag and empty bag detection area 32. The control unit 5 monitors the filling signal through the first sensor 25. Except for the edge pressed detection area 31 and the crooked bag and empty bag detection area 32, the scanning signal of the first sensor 25 is invalid and no subsequent calculation is performed.

[0062] In the edge pressing detection area 31, it is determined whether the first sensor 25 detects a filling amount signal at the edge of the packaged product. If the filling amount signal at the edge of the packaged product is detected, the packaged product is an edge pressing product. If the filling amount signal at the edge of the packaged product is not detected, the packaged product is a non-edge pressing product. The above scheme can be understood as follows: in the edge pressing detection area 31, if the first sensor 25 detects that there is content at any edge of the packaged product, the packaged product is determined to be an edge pressing product; in the edge pressing detection area 31, if the first sensor 25 detects that there is no content at any edge of the packaged product, the packaged product is determined to be a non-edge pressing product.

[0063] In the crooked bag and empty bag detection area 32, it is determined whether the first sensor 25 detects a filling signal in the packaged product. If a filling signal in the packaged product is detected, the packaged product is a non-empty bag product; if no filling signal in the packaged product is detected, the packaged product is an empty bag product. It can be understood that: in the crooked bag and empty bag detection area 32, if the first sensor 25 does not detect the content at all times, there is no filling signal, and the packaged product is determined to be an empty bag product; if the first sensor 25 always detects the content, there is a filling signal, and the packaged product is determined to be a non-empty bag product.

[0064] When the plaster enters the shifting area 33, each plaster triggers a mechanism in the shifting area 33, so that the calculation result previously marked in a control unit is moved back one position to ensure the continuity of the data, so that the processing information of the plaster can be accurately transmitted and tracked even between different workstations. According to the filling signal in the control unit, the empty bag products and the edge pressed products are rejected.

[0065] The above scheme can not only be applied to the accuracy of four-side sealed packaging products of various specifications, but also more accurately detect whether there are empty bag products or pressed edge products in the packaging products.

[0066] It should be noted that: refer to Figure 2 As shown in the figure, the mechanical origin (0°) is mainly used for synchronous system rejection station and detection result shift operation, that is, when the detection displacement sensor is at the mechanical origin, the rejection monitoring sensor must be located at the black color mark in the figure. The edge sealing start angle (50.0) to the edge sealing end angle (70.0) is the left edge pressure monitoring interval of the plaster piece, and the cutting angle (60.0) to the color mark interval is the right edge pressure monitoring interval of the plaster piece; the color mark to the crooked and empty monitoring (100) is the crooked bag and empty bag monitoring interval, the crooked and empty monitoring (100) to the mark (110) is the calculation detection result mark area 34; the mark (110) to the shift (120) is the shift area 33.

[0067] In an alternative embodiment, continue to refer to Figure 2 As shown, when the number of the first sensors 25 is two, the two first sensors 25 are located on opposite sides of the length direction of the touch device; in the crooked bag and empty bag detection area 32, the angle difference generated when the two first sensors 25 detect the internal quantity signal of the packaged product (such as the contents) is compared with the preset skew angle to determine the state of the package. If the angle difference generated when the two first sensors 25 detect the internal quantity signal of the packaged product (such as the contents) is greater than the preset skew angle, the packaged product is regarded as a crooked bag product. If the angle difference generated when the two first sensors 25 detect the internal quantity signal of the packaged product (such as the contents) is less than the preset skew angle, the packaged product is regarded as a non-skewed bag product. In the displacement area 33, the control unit controls the rejection device to reject the crooked bag product. In the above scheme, the preset skew angle can be an allowable skew angle, and the above detection result is marked to the control unit; as Figure 2 The preset skew angle is 30. With the above solution, while judging whether the packaged product is an empty bag product, it is possible to timely detect whether the packaged product is a crooked bag product. Subsequently, in the moving area, the rejection device will reject the crooked bag products, thereby improving production efficiency.

[0068] In an alternative embodiment, referring to Figure 3-Figure 6 As shown, Figure 3 It is a structural schematic diagram of the empty bag detection and rejection system provided by the present invention; Figure 4 yes Figure 3 A partial enlarged view of the middle part; Figure 5 is a side view of the empty bag detection and rejection system provided by the present invention; Figure 6 yes Figure 5 A partial enlarged view of point B in the middle; the detection device 2 includes a pallet 21 and a bracket 22, the pallet 21 is used to carry the packaged product, the bracket 22 is provided with a first base 23 and a second base 24 on opposite sides along its length direction, the first base 23 and the second base 24 are respectively provided with a first sensor 25, and a trigger device 26 is provided between the first base 23 and the second base 24.

[0069] Specifically, combined Figure 3-Figure 6 As shown, the detection device 2 includes a support plate 21 and a bracket 22. The support plate 21 can be a rectangular plate, which can be a rectangular plate for supporting the heat-sealed packaging bag. The bracket 22 can be a rectangular structure, and its material can be stainless steel. Stainless steel has good fatigue resistance, corrosion resistance and easy processing characteristics. The length extension direction of the support plate 21 is the same as the length extension direction of the bracket 22.

[0070] The bracket 22 is provided with a first base 23 and a second base 24 on the left and right sides along its length direction, respectively. The first base 23 and the second base 24 are located on the side of the bracket 22 close to the conveying device 4. The first base 23 and the second base 24 are respectively installed with a first sensor 25, that is, the number of the first sensors 25 is two, and the first sensor 25 is a contact sensor, which has the ability to adapt to up and down movement.

[0071] A trigger device 26 is provided between the first base 23 and the second base 24, and the trigger device 26 is used to contact the heat-sealed packaging bag; the first sensor 25 is connected to the trigger device 26, and when the first sensor 25 controls the trigger device 26 to move downward, the trigger device 26 contacts the heat-sealed packaging bag. When the first sensor 25 contacts the packaging bag through the trigger device 26, the first sensor 25 can accurately measure and calculate the filling signal of the packaging bag. The filling signal of the packaging bag can determine whether the detected object is an empty bag or has material (such as a plaster patch), and can also determine whether the detected object has a pressed edge, such as the left side pressed edge of the packaging bag, the right side pressed edge of the packaging bag, or the left and right sides pressed edge of the packaging bag. It should be noted that: the first sensor 25 itself can be programmed to output a material signal or a material shortage signal, that is, the first sensor 25 can control the output of a signal indicating the presence or absence of material through the encoder 410 according to the detected filling signal, so that not only the state of the material (such as presence or absence) can be detected, but also these states can be converted into electrical signals or other forms of information output.

[0072] When assembling, combine Figure 3 and Figure 4 As shown, the first base 23 and the second base 24 are respectively installed on the left and right sides of the bracket 22, and the two first sensors 25 are respectively installed on the first base 23 and the second base 24. The two first sensors 25 are in a vertical relationship with the packaging bag to be detected, such as 90° between the first sensor 25 and the packaging bag to be detected, to ensure the detection accuracy of the first sensor 25, and the two first sensors 25 are respectively connected to the left and right ends of the trigger device 26.

[0073] The principle is as follows: when the packaging bag slides under the trigger device 26, the two first sensors 25 can drive the trigger device 26 to move up and down through the first base 23 and the second base 24. The first sensor 25 is used to detect the packaging bag (such as the left and right edges of the packaging bag and the inside of the packaging bag) and will output a filling signal, which includes a thickness data signal; the control unit 5 cooperates with the encoder 410 to perform empty bag and edge pressing detection of the packaging bag, and it can be determined whether the packaging bag is an empty bag or an edge pressing according to the motor angle data of the encoder 410. The motor angle data includes a preset angle. For example, the preset angle range of the encoder 410 is designed to be within When the angle is 300°-350°, if the control unit 5 reads the thickness data signal of the left edge of the packaging bag, the right edge of the packaging bag, or the left and right edges of the packaging bag detected by the first sensor 25, if the thickness data signal of the left edge of the packaging bag, the right edge of the packaging bag, or the left and right edges of the packaging bag fed back by the first sensor 25 is greater than the thickness data signal of the left edge of the standard packaging bag, the right edge of the packaging bag, or the left and right edges of the packaging bag, then the detected packaging product has a filling signal; if there is a filling signal, it is determined that the packaging bag has a pressed edge, and the pressed edge is marked; if no filling signal is detected, it is determined that there is no pressed edge. When the preset angle range of the encoder 410 is designed to be 10°-50°, the control unit 5 reads the thickness data signal detected by the first sensor 25 in the packaging bag. For example, when detecting whether there is packaging in the packaging bag, the thickness data signal inside the packaging bag fed back by the first sensor 25 is equal to the thickness data signal inside the standard packaging bag. If there is a filling signal in the detected packaging bag, it means that there is no empty bag. After completing the judgment of the edge pressing and empty bag, since the rejection device 421 is installed on the second conveying device 42, when passing through the second conveying device 42, the control unit 5 outputs a signal to reject the packaging bag marked as an empty bag or the edge pressing. Otherwise, it reaches the finished product area through the second conveying device 42.

[0074] It should be noted that the material of the trigger device 26 can be nylon or polyvinyl fluoride. When the trigger device 26 is made of nylon, it has wear resistance, heat resistance, corrosion resistance, insulation, lightness and high strength. When the trigger device 26 is made of polyvinyl fluoride, it has high and low temperature resistance, corrosion resistance, weather resistance, non-adhesion and non-toxicity. Of course, according to actual conditions, the trigger device 26 can also be made of stainless steel, which is not specifically limited in this embodiment.

[0075] The detection device 2 is assembled from a support plate 21, a bracket 22, a first base 23, a second base 24, a first sensor 25 and a trigger device 26, and the overall cost is controllable. Compared with an independently installed empty bag detection system, the cost is lower.

[0076] Optionally, combined Figure 4 and Figure 6 As shown, along the width direction of the bracket 22, the cross-sectional shape of the trigger device 26 is V-shaped, and the length extension direction of the trigger device 26 is the same as the length extension direction of the bracket 22. The cross-sectional shape of the trigger device 26 along the width direction of the bracket 22 is designed to be V-shaped, that is, the tip of the trigger device 26 contacts the packaging bag, which is beneficial to improving the measurement accuracy of the first sensor 25, thereby better detecting the filling signal of the packaging bag.

[0077] In an optional embodiment, the first base 23 and the second base 24 both include a mounting member 231 and a connecting member 232 rotatably connected to the mounting member 231, such as the connecting member 232 in the first base 23 is located on the side of the mounting member 231 away from the second base 24, the connecting member 232 in the second base 24 is located on the side of the mounting member 231 close to the first base 23, and the trigger device 26 is located between the connecting member 232 in the first base 23 and the connecting member 232 in the second base 24; the first sensor 25 includes a trigger rod 251, and the mounting member 231 and the connecting member 232 are respectively connected to the trigger rod 251.

[0078] Combination Figure 3 and Figure 4As shown, in the above scheme, the mounting member 231 and the connecting member 232 can be connected by a rotating member (not shown in the figure), and the connecting member 232 in the first base 23 and the connecting member 232 in the second base 24 can be installed on the same side of the mounting member 231, such as being arranged on the front side of the mounting member 231. When the connecting member 232 in the second base 24 is designed to be on the side of the mounting member 231 close to the first base 23, other parts of the packaging machine can be installed on the side of the second base 24 away from the first base 23, so as to save space; the trigger device 26 is installed on the connecting member 232 in the first base 23 and the connecting member 232 in the second base 24. 232; the first sensor 25 includes a trigger rod 251, the mounting member 231 and the connecting member 232 are respectively connected to the trigger rod 251, and the front and rear ends of the trigger device 26 can be connected to the trigger rods 251 of the two first sensors 25. When the first sensor 25 controls the trigger rod 251 to move downward, the left and right edges of the packaging bag and whether there is a filling signal in the packaging bag are accurately detected through the trigger device 26. According to the filling signal, the control unit 5 and the encoder 410 detect the packaging bags with pressed edges and empty bags, and mark them. Subsequently, the rejection device 421 is used to reject the packaging bags with pressed edges and empty bags.

[0079] By adopting the above scheme, the first sensor 25 and the trigger device 26 can be more firmly fixed by the mounting member 231 and the connecting member 232. The mutual coordination between the trigger device 26 and the first sensor 25 is helpful to detect whether there is a filling signal in the packaging bag (such as the left and right edges of the packaging bag and inside the packaging bag), thereby effectively providing a detection basis for the control unit 5 and the encoder 410.

[0080] In an optional embodiment, the mounting member 231 includes a sensor mounting portion 2310, a connecting portion 2311 and a fixing portion 2312 which are connected in sequence, the connecting portion 2311 is located between the sensor mounting portion 2310 and the fixing portion 2312, the sensor mounting portion 2310 is connected to the bracket 22, and the fixing portion 2312 is connected to the connecting member 232; the sensor mounting portion 2310 is provided with a mounting hole (not shown in the figure) which cooperates with the trigger rod 251, such as the mounting hole passes through the sensor mounting portion 2310 along the width direction of the bracket 22, and the trigger rod 251 passes through the mounting hole; the connecting member 232 is provided with a connecting hole (not shown in the figure), and the trigger rod 251 passes through the mounting hole and the connecting hole in sequence.

[0081] Combination Figure 3 and Figure 4As shown, in the above scheme, the sensor mounting portion 2310, the connecting portion 2311 and the fixing portion 2312 are connected in sequence, the connecting portion 2311 is located between the sensor mounting portion 2310 and the fixing portion 2312, the sensor mounting portion 2310 is located on the side of the connecting portion 2311 close to the bracket 22, the side of the sensor mounting portion 2310 close to the bracket 22 is fixedly connected to the side of the bracket 22 close to the mounting member 231, the fixing portion 2312 is located on the side of the connecting portion 2311 close to the connecting member 232, the fixing portion 2312 and the support plate 21 are in a vertical relationship, which is conducive to connecting the connecting member 232, along the width direction of the bracket 22, the fixing portion 2312 and the connecting portion 2311 can be an obtuse angle, the obtuse opening formed between the fixing portion 2312 and the connecting portion 2311 of the mounting member 231 in the first base 23 faces away from the second base 24, and the mounting member 23 in the second base 24 is The obtuse-angled opening formed between the fixing portion 2312 and the connecting portion 2311 of the bracket 22 faces the side close to the first base 23, the fixing portion 2312 of the mounting member 231 in the first base 23 is rotatably connected to the connecting member 232 on the side away from the second base 24, and the fixing portion 2312 of the mounting member 231 in the second base 24 is rotatably connected to the connecting member 232 on the side close to the first base 23; the sensor mounting portion 2310 is provided with a mounting hole matched with the trigger rod 251, the mounting hole passes through the sensor mounting portion 2310 along the width direction of the bracket 22, and the trigger rod 251 passes through the mounting hole; the connecting member 232 is provided with a connecting hole coaxial with the mounting hole, and the bottom of the trigger rod 251 is connected to the connecting hole; by adopting the above scheme, the bracket 22, the mounting member 231, the connecting member 232, the trigger device 26 and the first sensor 25 can be assembled together, which is conducive to detecting the packaging bag.

[0082] In an optional embodiment, the sensor mounting portion 2310 includes a mounting horizontal plate 2310a and a mounting vertical plate 2310b connected to the mounting horizontal plate 2310a, such that the length extension direction of the mounting horizontal plate 2310a is the same as the length extension direction of the bracket 22, and the length extension direction of the mounting vertical plate 2310b intersects with the length extension direction of the bracket 22; the mounting horizontal plate 2310a is connected to the bracket 22, and the mounting vertical plate 2310b is connected to the connecting portion 2311.

[0083] Combination Figure 3 and Figure 4As shown, in the above scheme, the installation horizontal plate 2310a and the installation vertical plate 2310b constitute the overall structure of the sensor installation part 2310, and a T-shaped structure can be formed between the installation horizontal plate 2310a and the installation vertical plate 2310b. The length extension direction of the installation horizontal plate 2310a is the same as the length extension direction of the bracket 22, and the installation horizontal plate 2310a and the bracket 22 are fixedly connected; the length extension direction of the installation vertical plate 2310b intersects with the length extension direction of the bracket 22, such as the length extension direction of the installation vertical plate 2310b is perpendicular to the length extension direction of the bracket 22, and a mounting hole is opened on the installation vertical plate 2310b, and the mounting hole penetrates the installation vertical plate 2310b along the width direction of the bracket 22, and the trigger rod 251 of the first sensor 25 passes through the mounting hole, so that the first sensor 25 is fixedly installed on the installation vertical plate 2310b; the connecting portion 2311 is fixedly connected to the installation vertical plate 2310b at one end away from the fixing portion 2312.

[0084] It should be noted that the sensor mounting portion 2310 , the connecting portion 2311 and the fixing portion 2312 may be an integrated structure, which can not only significantly shorten the assembly time but also improve the overall stability of the mounting member 231 , thereby more stably fixing the first sensor 25 .

[0085] In an alternative embodiment, in combination Figure 3 and Figure 4 As shown, the connecting member 232 includes a connecting cross bar 2321 and a connecting vertical bar 2322 connected to the connecting cross bar 2321. The length extension direction of the connecting cross bar 2321 and the length extension direction of the connecting vertical bar 2322 intersect with the length extension direction of the bracket 22 respectively. For example, the length extension direction of the connecting cross bar 2321 is perpendicular to the length extension direction of the bracket 22, and the length extension direction of the connecting vertical bar 2322 is also perpendicular to the length extension direction of the bracket 22. An L-shaped structure can be formed between the connecting cross bar 2321 and the connecting vertical bar 2322. The connecting vertical bar 2322 is connected to the fixing portion 2312. For example, the connecting vertical bar 2322 and the fixing portion 2312 can be connected. The connecting cross bar 2321 is connected to the trigger device 26 by a rotational connection. For example, the trigger device 26 and the trigger rod 251 of the first sensor 25 and the connecting cross bar 2321 can be fixedly connected. The trigger device 26 and the first sensor 25 are more effectively fixed by the connecting piece 232 of the first base 23 and the connecting piece 232 of the second base 24. Since the connecting vertical rod 2322 and the fixed part 2312 are rotationally connected, when the first sensor 25 controls the trigger rod 251 to move up and down, the trigger device 26 is driven to move up and down through the connecting cross bar 2321 close to the side of the trigger device 26, thereby realizing the detection of the packaging bag by the first sensor 25.

[0086] In an optional embodiment, a second sensor 27 is provided on the side of the bracket 22 away from the first base 23, and the second sensor 27 is connected to the encoder 410. The second sensor 27 is used to detect the color mark on the packaged product and reset the encoder according to the color mark of the packaged product.

[0087] Combination Figure 3 and Figure 5 As shown, the second sensor 27 may be a color mark sensor, which is used to detect the color mark on the packaged product (such as each small package bag), and reset the encoder 410 according to the color mark of the packaged product. Specifically, each small package bag has a color mark of the same size at a uniform position in the lower right corner. When the color mark sensor detects the color mark on the small package bag, the angle value of the encoder 410 returns to 0°, so that the angle of each small package bag is consistent, so that the edge pressing and empty bag can be detected within different encoder 410 angles. The model of the color mark sensor may be SICK KTS-WS91141142ZZZZ color mark sensor.

[0088] In an optional embodiment, the conveying device 4 includes a first conveying device 41 and a second conveying device 42, both of which are used to convey packaged products. The first conveying device 41 is located on the side of the second conveying device 42 close to the detection device 2. The first conveying device 41 includes a driving member (not shown in the figure), and an encoder 410 is provided on the driving member; the second conveying device 42 is provided with a rejection device 421.

[0089] Combination Figure 1 and Figure 3 As shown, the conveying device 4 includes a first conveying device 41 and a second conveying device 42. The first conveying device 41 and the second conveying device 42 can both be vacuum conveying runways. The vacuum conveying runway is a system that uses the principle of vacuum adsorption to transport materials. By generating negative pressure under the runway, the packaged products are adsorbed and transported (the packaged products are transported from one place to another by vacuum suction), thereby maintaining a relatively stable spacing. The conveying method is horizontal conveying. It should be noted that the first conveying device 41 can be a first vacuum conveying runway, and the second conveying device 42 can be a second vacuum conveying runway.

[0090] The first conveying device 41 and the second conveying device 42 are both used for vacuum conveying packaged products. The first conveying device 41 is located on the side of the second conveying device 42 close to the detection device 2. The first conveying device 41 includes a driving member, on which an encoder 410 is provided. The driving member can be a motor. The encoder 410 is connected to the motor. The encoder 410 generates angle data of the motor. The PLC detects whether there is an empty bag signal or a filling amount signal at a preset angle of the encoder 410 to identify the edge pressing or empty bag of the packaging bag. Specifically, the PLC detects the electrical signal output by the encoder 410 to analyze the rotation angle of the motor. The angle of rotation is determined to determine whether the preset angle is reached. For example, when the encoder 410 outputs a certain number of pulses, it can be considered that the motor has rotated to the preset angle, which can be 10°-50° or 300°-350°. The PLC periodically reads the electrical signal output by the encoder 410, and analyzes the angle of rotation of the motor according to the electrical signal output by the encoder 410. When the encoder 410 outputs a certain number of pulses, it is considered that the preset angle has been reached. Combined with the loading signal output by the first sensor 25, the PLC can output corresponding control signals, such as triggering empty bag detection or loading signals.

[0091] The second conveying device 42 is provided with a rejection device 421 for rejecting packaged products with empty bags and pressed edges; a waste box 422 can be placed under the rejection device 421 to facilitate placing the rejected packaged products in the waste box 422.

[0092] During specific assembly, an encoder 410 is installed on the driving member in the first conveying device 41, and a rejection device 421 is installed on the second conveying device 42. The touch device 3 can be placed between the first base 23 or the second base 24 and the first conveying device 41, and the two first sensors 25, the touch device 3, the encoder 410 and the rejection device 421 are connected to the control unit 5.

[0093] The principle is as follows: when the packaging bag slides under the trigger device 26, the two first sensors 25 can drive the trigger device 26 to move up and down through the first base 23 and the second base 24. The first sensor 25 is used to detect the packaging bag (such as the left and right edges of the packaging bag and the inside of the packaging bag) and will output a filling signal, which can be a thickness data signal; when passing through the first conveying device 41, since the encoder 410 is installed on the driving part of the first conveying device 41, the control unit 5 cooperates with the encoder 410 to perform empty bag and pressed edge detection of the packaging bag. It can be judged whether the packaging bag is empty or pressed edge according to the preset angle of the encoder 410, such as when the encoder 410 is When the preset angle range of the sensor 410 is 300°-350°, if the control unit 5 reads the thickness data signal of the left edge of the packaging bag, the right edge of the packaging bag, or the left and right edges of the packaging bag detected by the first sensor 25, if the thickness data signal of the left edge of the packaging bag, the right edge of the packaging bag, or the left and right edges of the packaging bag fed back by the first sensor 25 is greater than the thickness data signal of the left edge of the standard packaging bag, the right edge of the packaging bag, or the left and right edges of the packaging bag, then the detected packaged product has a filling signal; if there is a filling signal, it is determined that the packaging bag has a pressed edge, and the pressed edge is marked; if no filling signal is detected, it is determined that there is no pressed edge. When the preset angle range of the encoder 410 is designed to be 10°-50°, the control unit 5 reads the thickness data signal detected by the first sensor 25 in the packaging bag. For example, when detecting whether there is packaging in the packaging bag, the thickness data signal inside the packaging bag fed back by the first sensor 25 is equal to the thickness data signal inside the standard packaging bag. If there is a filling signal in the detected packaging bag, there is a packaging product without an empty bag. Otherwise, it is judged to be an empty bag and marked. After completing the judgment of the edge pressing and empty bag, since the rejection device 421 is installed on the second conveying device 42, when passing through the second conveying device 42, the control unit 5 outputs a signal to reject the packaging bag marked as an empty bag or an edge pressing. Otherwise, it reaches the finished product area through the second conveying device 42.

[0094] In an optional embodiment, the rejecting device 421 includes an air blowing nozzle 4210 and a solenoid valve 4211 connected to the air blowing nozzle 4210 , the air blowing nozzle 4210 is located on the side wall of the second conveying device 42 , and the solenoid valve 4211 is connected to the control unit 5 .

[0095] Combination Figure 1 and Figure 5As shown, the above-mentioned blowing nozzle 4210 can be a F1-4-ALMA stainless steel blowing nozzle, and a solenoid valve 4211 is connected to the rear of the blowing nozzle 4210. The waste bin 422 is located below the blowing nozzle 4210. The solenoid valve 4211 is electrically connected to the control unit 5. The model of the solenoid valve 4211 can be FESTO CPE14-M1BH-5L-1 / 8 solenoid valve 4211. When the control unit 5 detects a packaging bag with a pressed edge or an empty bag, it will output a control signal to the solenoid valve 4211, thereby controlling the opening and closing of the compressed air. Specifically, when the control unit 5 detects a pressed edge or an empty bag, the control unit 5 will send a signal to the solenoid valve 4211, and the solenoid valve 4211 will open after receiving the signal, and the compressed air will be released, so that the packaging bags with empty bags and pressed edges will be removed, and the packaging bags with empty bags and pressed edges will be placed in the waste bin.

[0096] It should be noted that: the detection angle of the encoder 410 can be switched according to the length of the small packaging bags to be detected, so as to realize the detection of edge pressing and empty bags of packaging bags of multiple specifications; when there is no abnormality in the packaging bag detection, the packaging bags are output normally; when packaging bags with edge pressing and empty bags appear, the first sensor 25 sends the detected signal to the control unit 5, the control unit 5 marks the rejection position and outputs a signal to the solenoid valve 4211, the solenoid valve 4211 opens the blowing nozzle 4210, and the packaging bags with edge pressing or empty bags are rejected into the waste box through the airflow; when this action is completed, the solenoid valve automatically reverses, and the airflow passage is closed, and this cycle is repeated.

[0097] In an optional embodiment, a cutting device 6 is further included. The cutting device 6 is located between the detection device 2 and the conveying device 4. Specifically, the cutting device 6 can be arranged between the touch device 3 and the first conveying device 41. The touch device 3 can be installed on the frame 1. The cutting device 6 includes a bottom roller 61 and a cutter 62 connected to the bottom roller 61. The bottom roller 61 and the cutter 62 are arranged vertically, that is, the cutter 62 and the bottom roller 61 are vertically installed through a mounting seat (not shown in the figure), the bottom roller is installed on the frame 1, the bottom roller 61 moves in a circumferential direction, and the packaging bag is cut by the cutter 62 installed on the bottom roller 61. Since the cutter 62 and the bottom roller 61 are fixed by the mounting seat, it is ensured that the cutter 62 and the bottom roller are installed vertically, which can ensure the accuracy and stability of the cutting.

[0098] For example, after heat sealing, the packaging bag is in the form of a long strip and passes horizontally under the first sensor 25. The bottom roller 61 rotates in the circumferential direction, and the long strip packaging bag is cut into separate individual packaging bags in sequence by the cutter 62. The packaging bags are conveyed to the finished packaging bag collection through the first conveying device 41 and the second conveying device 42 in sequence. The detection device 2 can detect the packaging bags with pressed edges and empty bags from the long strip packaging bags and mark them. When the packaged products reach the second conveying device 42, the rejection device 421 rejects the packaging bags with pressed edges and empty bags into the waste box.

[0099] The detection device 2, the touch device 3, the conveying device 4 and the cutting device 6 can be directly mounted on the frame 1. The touch device 3 is located between the detection device 2 and the conveying device 4. Placing the touch device 3 between the detection device 2 and the conveying device 4 is conducive to significantly shortening the connection line between the touch device 3 and the control unit 5, and is also conducive to reducing the connection line between the control unit 5 and the encoder 410 in the future.

[0100] Embodiment 2

[0101] This embodiment provides a packaging machine, including the above-mentioned empty bag detection and rejection system, and the empty bag detection and rejection system can be arranged behind the hot pressing component (not shown in the figure).

[0102] Although some specific embodiments of the present invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. An empty bag detection and rejection system, characterized in that: It comprises a detection device (2), a touch device (3), an encoder (410), a driving member, a rejection device (421) and a control unit (5); The detection device (2) comprises a first sensor (25) and a trigger device (26) connected to the first sensor (25); when the first sensor (25) controls the trigger device (26) to contact the packaged product, the first sensor (25) is used to collect a filling amount signal of the packaged product; The touch control device (3) is used to configure the adjustment of the empty bag or edge pressing angle parameters and the opening and closing of the detection function; The encoder (410) is connected to the driving member and is used to generate angle data of the driving member; The rejection device (421) is used to reject the packaged products with empty bags and / or pressed edges; The first sensor (25), the touch device (3), the encoder (410) and the rejection device (421) are respectively connected to the control unit (5), and the control unit (5) is configured to perform the following steps: Receive the start and stop of the adjustment and detection function of the configuration for the empty bag or the edge pressing angle parameter, the filling quantity signal of the packaged product and the angle data of the driving member; According to the configuration of adjusting the empty bag or edge pressing angle parameters and starting and closing the detection function, the packing quantity signal of the packaged product and the angle data of the driving member, the packaged product with the empty bag and / or edge pressing is detected, and the packaged product with the empty bag and / or edge pressing is fed back to the rejection device (421).

2. The empty bag detection and rejection system according to claim 1, characterized in that: According to the configuration, adjusting the empty bag or edge pressing angle parameter and starting and closing the detection function, the packing quantity signal of the packaged product and the angle data of the driving member, detecting the packaged product with an empty bag and / or edge pressing, and feeding back the packaged product with an empty bag and / or edge pressing to the rejection device (421) comprises: The encoder (410) comprises at least a pressing edge detection area (31), a crooked bag and empty bag detection area (32) and a shifting area (33) according to the running sequence of the packaged product; In the edge pressing detection area (31), it is determined whether the first sensor (25) detects a filling quantity signal at the edge of the packaged product; if the filling quantity signal at the edge of the packaged product is detected, the packaged product is an edge pressing product; if the filling quantity signal at the edge of the packaged product is not detected, the packaged product is a non-edge pressing product; In the crooked bag and empty bag detection area (32), it is determined whether the first sensor (25) detects a filling amount signal in the packaged product; if the filling amount signal in the packaged product is detected, the packaged product is a non-empty bag product; if the filling amount signal in the packaged product is not detected, the packaged product is an empty bag product; In the displacement area (33), according to the filling quantity signal, the control unit (5) controls the rejection device (421) to reject the empty bag product and the edge-pressed product.

3. The empty bag detection and rejection system according to claim 2, characterized in that: When the number of the first sensors (25) is two, the two first sensors (25) are arranged on opposite sides along the length direction of the touch control device (3); In the crooked bag and empty bag detection area (32), the angle difference generated when the two first sensors (25) detect the signal of the amount of content in the packaged product is compared with a preset skew angle to judge the state of the package; if the angle difference generated when the two first sensors (25) detect the signal of the amount of content in the packaged product is greater than the preset skew angle, the packaged product is regarded as a crooked bag product; if the angle difference generated when the two first sensors (25) detect the signal of the amount of content in the packaged product is less than the preset skew angle, the packaged product is regarded as a non-crooked bag product; In the displacement area (33), the control unit (5) controls the rejection device (421) to reject crooked bag products.

4. The empty bag detection and rejection system according to claim 1, characterized in that: The detection device (2) further comprises a support plate (21) and a bracket (22), wherein: The support plate (21) is used for carrying the packaged product; The bracket (22) is provided with a first base (23) and a second base (24) on opposite sides along the length direction thereof, respectively; the first base (23) and the second base (24) are provided with the first sensor (25) respectively; and the trigger device (26) is disposed between the first base (23) and the second base (24).

5. The empty bag detection and rejection system according to claim 4, characterized in that: Along the width direction of the bracket (22), the cross-sectional shape of the trigger device (26) is V-shaped.

6. The empty bag detection and rejection system according to claim 4, characterized in that: The first base (23) and the second base (24) both comprise a mounting member (231) and a connecting member (232) connected to the mounting member (231), and the trigger device (26) is located between the connecting member (232) in the first base (23) and the connecting member (232) in the second base (24); The first sensor (25) comprises a trigger rod (251), and the mounting member (231) and the connecting member (232) are respectively connected to the trigger rod (251).

7. The empty bag detection and rejection system according to claim 4, characterized in that: A second sensor (27) is provided on the side of the bracket (22) facing away from the first base (23); the second sensor (27) is connected to the encoder (410); the second sensor (27) is used to detect a color mark on the packaged product and reset the encoder (410) according to the color mark of the packaged product.

8. The empty bag detection and rejection system according to claim 1, characterized in that: The invention also comprises a conveying device (4), which comprises a first conveying device (41) and a second conveying device (42), wherein the first conveying device (41) and the second conveying device (42) are both used for conveying the packaged product, the first conveying device (41) is located on a side of the second conveying device (42) close to the detection device (2), the first conveying device (41) comprises the driving member, and the encoder (410) is arranged on the driving member; the rejection device (421) is arranged on the second conveying device (42).

9. The empty bag detection and rejection system according to claim 8, characterized in that: The rejection device (421) comprises an air blowing nozzle (4210) and an electromagnetic valve (4211) connected to the air blowing nozzle (4210), wherein the air blowing nozzle (4210) is located on a side wall of the second conveying device (42), and the electromagnetic valve (4211) is connected to the control unit (5).

10. The empty bag detection and rejection system according to claim 8, characterized in that: The invention also comprises a cutting device (6), wherein the cutting device (6) is located between the detection device (2) and the conveying device (4), and the cutting device (6) comprises a bottom roller (61) and a cutter (62) connected to the bottom roller (61), and the bottom roller (61) and the cutter (62) are arranged vertically.

Images