Quality detection device and detection method for white cardboard production

Abstract

The invention discloses a quality detection device for white cardboard production and a detection method, and relates to the technical field of white cardboard production equipment.The quality detection device comprises a workbench, a driving wedge block, a pressure supply mechanism, a second pressure gauge and a control unit, and the driving wedge block is located above the workbench and can vertically ascend and descend; a stripping wedge block is vertically and slidably connected to the tip of the bottom of the driving wedge block, in an initial state, the tip of the bottom of the stripping wedge block is used for making contact with the bonding position of the cigarette case, and a contact switch is arranged at the position, corresponding to the top of the stripping wedge block, of the driving wedge block; the pressure supply mechanism is used for applying vertically downward pressure to the driving wedge block, and a first pressure gauge is arranged between the driving wedge block and the pressure supply mechanism; the second pressure gauge is arranged on the side, away from the cigarette case, of the stripping wedge block and used for detecting the force applied by the stripping part of the cigarette case in the horizontal direction; and when the stripping wedge block is separated from the contact switch, the first pressure gauge locks the current pressure value. The method has the effect of improving the detection accuracy of the production quality of the white cardboard.

Description

Technical Field

[0001] The present application relates to the technical field of white cardboard production equipment, and in particular to a quality inspection device and inspection method for white cardboard production. Background Art

[0002] The outer packaging of rigid cigarette boxes is usually made of white cardboard, because white cardboard has good stiffness and printing effect, which can well present the exquisite patterns and texts of cigarette boxes. In addition, the hardness and thickness of white cardboard make cigarette boxes more durable and convenient for protecting cigarettes from the influence of the external environment. In order to test the quality of white cardboard products during production, in addition to conventional testing methods, the white cardboard finished product samples can be made into cigarette box samples, and then the quality of the cigarette box samples can be tested to indirectly reflect the production quality of white cardboard.

[0003] In the related art, a Chinese patent document with the authorization announcement number CN210982184U discloses a device for detecting the adhesive strength of a soft-pack hardened cigarette box, including a contact portion that provides a lateral opening force at the adhesive portion of the cigarette box and a pressure device that provides pressure to the contact portion, the contact portion including a connecting portion and a contact end portion with a slope structure, and also including a limit groove for fixing the position of the cigarette box. During the test, the cigarette box is first fixed in the limit groove, and the bottom end of the contact portion is aligned with the adhesive portion of the side of the cigarette box and pressed down. The pressure device gradually applies pressure to the adhesive portion of the cigarette box through the contact portion until the adhesive portion of the cigarette box is unbonded, and a part of the cigarette box at the adhesive portion is tilted to the left and opened, which is recorded as the peeling portion, that is, the peeling portion of the cigarette box is unbonded and separated from the cigarette box body, and the pressure applied by the pressure device at this time is recorded, which is defined as the adhesive strength of the cigarette box.

[0004] Whether the peeling part of the cigarette box is separated from the cigarette box body depends entirely on human eyes, and the human eye cannot accurately observe the moment of separation. It is often necessary for the peeling part of the cigarette box to be separated to a certain extent before it can be observed. At this time, the pressure value recorded cannot accurately reflect the actual bonding strength of the cigarette box, and there is a large error, which affects the final white cardboard production quality inspection result. Summary of the invention

[0005] In order to improve the situation where existing detection devices have large errors when detecting the adhesive strength of cigarette boxes, which affects the quality detection results of white cardboard production, the present application provides a quality detection device and detection method for white cardboard production.

[0006] On the one hand, the present application provides a quality inspection device for white cardboard production, which adopts the following technical solution: A quality inspection device for white cardboard production, comprising: A workbench for placing cigarette boxes; A driving wedge is located above the workbench and can be lifted vertically. A stripping wedge is vertically slidably connected to the bottom tip of the driving wedge. In an initial state, the bottom tip of the stripping wedge is used to contact the adhesive portion of the cigarette case. A contact switch is provided at the top position of the driving wedge corresponding to the stripping wedge. A first return member is provided between the driving wedge and the stripping wedge. A pressure supply mechanism, used for applying vertical downward pressure to the driving wedge, wherein a first pressure gauge is provided between the driving wedge and the pressure supply mechanism, and the first pressure gauge can record and display the pressure value applied by the pressure supply mechanism to the driving wedge; A second pressure gauge is used to be arranged on a side of the stripping wedge away from the cigarette box, and the second pressure gauge is used to detect the horizontal force applied by the stripping portion of the cigarette box; A control unit, wherein the contact switch is electrically connected to the control unit, and the control unit is electrically connected to a first pressure gauge. When the stripping wedge is disengaged from the contact switch, the first pressure gauge locks the current pressure value.

[0007] Optionally, a transmitting module is provided on the workbench on one side of the driving wedge, for emitting horizontal laser. The setting height of the transmitting module is lower than the height of the bottom tip of the stripping wedge in the initial state, and the transmitting module emits laser in the direction of the stripping wedge. A receiving module is fixed on the side of the stripping wedge away from the transmitting module. Both the transmitting module and the receiving module are electrically connected to the control unit. When the receiving module is at the same height as the transmitting module, the receiving module receives the laser signal from the transmitting module, and the pressure supply mechanism stops applying pressure.

[0008] Optionally, a signal optical fiber is passed through the stripping wedge, one end of the signal optical fiber is horizontally facing one side of the transmitting module, the other end of the signal optical fiber is in the same height as the receiving module and faces the receiving module, and the end of the signal optical fiber facing the transmitting module is movably connected to the stripping wedge.

[0009] Optionally, the second pressure gauge is placed horizontally, and the second pressure gauge includes a pressure probe facing the direction of the peeling wedge. The setting height of the pressure probe is lower than the height of the bottom tip of the peeling wedge in the initial state. The pressure probe is used to be placed close to the peeling part of the cigarette box to detect the force applied in the horizontal direction when the peeling part is separated.

[0010] Optionally, the stripping wedge includes a stripping bevel, which is arranged on a side of the stripping wedge close to the second pressure gauge, and the distance between the stripping bevel and the pressure probe gradually increases from top to bottom.

[0011] Optionally, a separation block is slidably connected inside the stripping wedge, and the separation block can slide out of the stripping wedge from the stripping slope. A suction assembly is provided inside the stripping wedge for controlling the separation block to extend or retract the stripping wedge.

[0012] Optionally, the suction component includes a first suction component, a second suction component and a second return component, the first suction component is fixed in the stripping wedge and electrically connected to the control unit, the second suction component is fixed to the separation block, the first suction component and the second suction component correspond in position, one end of the second return component is connected to the stripping wedge, and the other end is connected to the separation block, the first suction component can be connected to an external power supply, and the first suction component is adsorbed together with the second suction component after power is supplied.

[0013] Optionally, the stripping wedge is provided with an anti-stick coating on the stripping inclined surface and the side wall surface away from the stripping inclined surface.

[0014] On the other hand, the present application provides a method for quality inspection of white cardboard production, using the above-mentioned quality inspection device for white cardboard production to inspect the production quality of white cardboard, comprising the following steps: S1: Place the cigarette box to be tested on the workbench and fix the position, align the bottom tip of the stripping wedge with the bonding part of the cigarette box, start the pressure supply mechanism, and the pressure supply mechanism applies downward pressure to the stripping wedge, and gradually increases the applied pressure. The first pressure gauge continuously detects the pressure value applied downward by the pressure supply mechanism. At the moment when the bonding part of the cigarette box is separated, the first return member pushes the stripping wedge downward to insert into the gap where the bonding part is separated, and separates the stripping part from the bonding part of the cigarette box. At this time, the stripping wedge is disengaged from the contact switch, and the control unit sends a signal to the first pressure gauge. The first pressure gauge locks its currently detected pressure value and displays it externally. The laser emitted by the transmitting module is transmitted to the receiving module via the signal optical fiber. The receiving module sends a laser signal to the control unit. The control unit sends a signal to stop applying pressure to the pressure supply mechanism. Since the stripping wedge pushes the stripping part away from the cigarette box body, the stripping part contacts the second pressure gauge. The second pressure gauge detects the horizontal force applied by the stripping part, and the second pressure gauge sends a pressure signal to the control unit. S2: The pressure value displayed by the first pressure gauge is defined as the adhesive strength of the cigarette box to be tested. When the adhesive strength is less than 28N, it is judged to be unqualified. For cigarette box samples with unqualified adhesive strength, white cardboard produced in the same batch as the unqualified cigarette box samples is re-selected for quality inspection to determine whether it is a common quality problem; S3: During the detection, the control unit must receive the laser signal and the pressure signal at the same time, and the detection result will be considered valid. Otherwise, readjust and continue the detection.

[0015] In summary, the present application includes at least one of the following beneficial effects: 1. During the inspection, the stripping wedge is first moved to the bonding position of the corresponding cigarette box and stopped. In the initial state, the bottom tip of the stripping wedge contacts the bonding surface of the cigarette box, and then the pressure supply mechanism gradually applies pressure to the stripping wedge. During the pressure application process, since the stripping wedge is slidably connected to the driving wedge, the stripping wedge first abuts against the cigarette box and remains stationary, while the driving wedge gradually descends in height until the driving wedge descends to the point where the contact switch inside it abuts against the stripping wedge. At this time, the first return member is deformed under pressure, the first pressure gauge begins to detect the real-time pressure value, and the driving wedge begins to press down the bonding part of the cigarette box together with the stripping wedge. At the moment when the stripping part is separated from the bonding part of the cigarette box, the stripping wedge is pressed by the first The restoring force generated by the restoring member pushes it downward and instantly inserts it into the gap at the bonding place. At this time, the top of the peeling wedge is separated from the contact switch, and the control unit sends a locking signal to the first pressure gauge. The first pressure gauge locks the pressure value detected by itself at the moment of separation and displays it externally. Since the peeling wedge is inserted into the gap at the moment of separation at the bonding place, compared with direct observation by the human eye, the action of the peeling wedge is faster and can more accurately reflect the moment of separation. The pressure value data finally obtained by the first pressure gauge more accurately reflects the pressure value at the moment of separation at the bonding place, thereby greatly improving the accuracy of the bonding strength test of the cigarette box sample, and then improving the accuracy of the corresponding white cardboard quality test results; 2. By adopting dual detection of laser signal and pressure signal, the laser signal is emitted from the transmitting module to the signal optical fiber following the stripping wedge. After the signal optical fiber follows the stripping wedge and is inserted into the gap, it is at the same level as the transmitting module. The laser is transmitted along the signal optical fiber to the receiving module. The receiving module sends the laser signal to the control unit, and the pressure signal is detected by the second pressure gauge. Since the stripping part is separated from the cigarette box body, the stripping part will spread away from the cigarette box body at the moment of separation. Therefore, the stripping part will exert a horizontal force on the second pressure gauge. If the second pressure gauge detects this force, it will send a pressure signal to the control unit. If the control unit detects both the laser signal and the pressure signal, the reading displayed by the first pressure gauge is valid at this time. Because if the control unit only receives the laser signal but the second pressure gauge does not detect the pressure signal, it may be because the stripping wedge is not pressed down at the bonding position; if the control unit does not receive the laser signal but the second pressure gauge detects the pressure signal, it may be because the position of the cigarette box is offset during the pressing process. The pressure values ​​detected in both cases are invalid. 3. A pop-up separation block is arranged in the stripping wedge. When the stripping wedge is inserted into the gap at the bonding portion, the first suction member is powered off. At this time, the second suction member is pushed away from the first suction member by the second return member, and the separation block is instantly popped out of the stripping wedge from the stripping slope. The pop-up separation block applies a force to the separated stripping portion in a direction away from the cigarette box body, so that the stripping portion further spreads outward. The stripping portion that spreads further outward can apply a greater and more obvious pressure to the second pressure gauge, making the second pressure gauge easier to detect, thereby improving the detection sensitivity of the pressure signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram showing the overall structure of the detection device in Example 1 of the present application; Figure 2 is a partial schematic diagram showing a driving wedge block in Example 1 of the present application; Figure 3 is a partial cross-sectional schematic diagram showing a stripping wedge in Example 1 of the present application; Figure 4 is a schematic diagram showing the structure of a transmitting module and a receiving module in Example 1 of the present application; Figure 5 is a cross-sectional schematic diagram showing the working principle of the signal optical fiber in Example 1 of the present application; Figure 6 It is a partial cross-sectional schematic diagram showing the separation block structure of Example 1 of the present application.

[0017] Explanation of the accompanying drawings: 1. Workbench; 11. Support frame; 12. Support leg; 13. Screw rod; 14. Limit block; 15. Transmitting module; 2. Driving wedge; 21. Guide groove; 22. First return member; 23. Contact switch; 3. Pressure supply mechanism; 31. Fixed seat; 32. Pressure cylinder; 33. First pressure gauge; 4. Cigarette box; 41. Filling block; 42. Adhesion; 43. Peeling part; 5. Peeling wedge; 51. Peeling slope; 52. Guide block; 53. Receiving module; 54. Slide groove; 55. Separation block; 56. First suction member; 57. Second suction member; 58. Second return member; 6. Second pressure gauge; 7. Signal optical fiber. DETAILED DESCRIPTION

[0018] The following is combined with Figure 1-6 This application is described in further detail. Example 1

[0019] Embodiment 1 of the present application discloses a quality inspection device for white cardboard production, referring to Figure 1 and Figure 2The quality inspection device for white cardboard production includes a workbench 1, a support frame 11 and a driving wedge 2, wherein the workbench 1 is placed horizontally for placing cigarette boxes 4, and four vertical legs 12 are fixed at the bottom of the workbench 1, and the workbench 1 is stably placed on the ground or other workbench 1 surface through the legs 12. The support frame 11 is vertically fixed to the top surface of the workbench 1, and there are two support frames 11, which are spaced apart, and a horizontal screw rod 13 is arranged between the support frames 11, and the two ends of the screw rod 13 are respectively connected to the top positions of the two support frames 11 through bearings, and a pressure supply mechanism 3 is arranged on the screw rod 13, and the driving wedge 2 is arranged at the bottom of the pressure supply mechanism 3, and moves on the screw rod 13 following the pressure supply mechanism 3.

[0020] Specifically, the pressure supply mechanism 3 includes a fixed seat 31 and a pressure cylinder 32, wherein the pressure cylinder 32 is placed vertically and the output shaft is vertically downward, the screw 13 is passed through and threadedly connected to the fixed seat 31, and a driving motor is fixed at one end of the screw 13 on one side wall of the support frame 11, and the output shaft of the driving motor is coaxially fixed with one end of the screw 13, and the screw 13 is driven by the output shaft of the driving motor to rotate, so as to drive the fixed seat 31 to reciprocate horizontally along the length direction of the screw 13, and finally drive the pressure cylinder 32 to reciprocate in the horizontal direction, and the driving wedge 2 is arranged at the bottom of the pressure cylinder 32, so that the driving wedge 2 can reciprocate with the pressure cylinder 32, so as to facilitate the position of the driving wedge 2. A first pressure gauge 33 is fixed between the driving wedge 2 and the output shaft of the pressure cylinder 32, and the first pressure gauge 33 includes a pressure sensor and a display screen, and the first pressure gauge 33 can detect the pressure value applied by the pressure cylinder 32 to the driving wedge 2 in real time, and display the corresponding pressure value on the display screen. In the first embodiment of the present application, the pressure cylinder 32 may be a small electric cylinder or a hydraulic cylinder, as long as it can stably drive the driving wedge block 2 to move up and down in the vertical direction.

[0021] The top surface of the workbench 1 is provided with a horizontally placed limit block 14 and a transmitting module 15 for transmitting lasers. A vertical rod is fixed at the position of the top surface of the workbench 1 corresponding to the limit block 14. The vertical rod is inserted into the limit block 14. The limit block 14 can slide up and down along the vertical rod. A horizontal locking screw is also inserted into the limit block 14. The locking screw is threadedly connected to the limit block 14, and one end of the locking screw can be against the side wall of the vertical rod after rotation, thereby locking the height position of the limit block 14. The transmitting module 15 is located on one side of the limit block 14 and is arranged close to the limit block 14. The bottom of the transmitting module 15 is fixed by a vertical rod vertically inserted into the workbench 1. The vertical rod corresponding to the transmitting module 15 can be lifted and lowered to adjust the position of the transmitting module 15. The method of locking the transmitting module 15 can be consistent with the method of locking the limit block 14, which will not be repeated here.

[0022] The sample of the cigarette box 4 to be tested is placed under the limit block 14, and a filling block 41 matching the internal space of the cigarette box 4 is inserted into the cigarette box 4, the top surface of the filling block 41 is a magnetic block, and the limit block 14 is made of iron material. When the position of the cigarette box 4 needs to be fixed, the filling block 41 of a suitable size is first inserted into the cigarette box 4, and then the cigarette box 4 is connected to the filling block 41 and placed together at the appropriate position at the bottom of the limit block 14. It should be noted that when the cigarette box 4 is placed, the adhesive part 42 of the cigarette box 4 cannot be blocked by the limit block 14, and the adhesive part 42 is exposed outside the limit block 14, and the exposed part should not be too much, and then the limit block 14 is lowered until it slightly touches the surface of the cigarette box 4, and finally the position of the limit block 14 is locked by the locking screw. At this time, the filling block 41 and the limit block 14 are sucked together to clamp the cigarette box 4 together.

[0023] Reference Figure 2 and Figure 3 , the bottom tip of the driving wedge 2 is vertically slidably connected with a stripping wedge 5, which is correspondingly arranged on the side of the bonding part 42 near the cigarette box 4, and the stripping wedge 5 includes a stripping inclined surface 51, which is arranged on the side of the stripping wedge 5 away from the cigarette box 4, and the side of the stripping wedge 5 close to the cigarette box 4 is a vertical surface. A second pressure gauge 6 is also fixed on the workbench 1, and the second pressure gauge 6 is located on the side of the stripping wedge 5 away from the cigarette box 4. The second pressure gauge 6 also includes a horizontal pressure probe facing the direction of the cigarette box 4, and the distance between the stripping inclined surface 51 and the pressure probe gradually increases from top to bottom. The driving wedge 2 also includes an inclined surface, and the inclined surface of the driving wedge 2 and the stripping inclined surface 51 of the stripping wedge 5 are located on the same side. When it is necessary to test the bonding strength of the bonding part 42, the stripping wedge 5 is first adjusted to align the bottom tip with the bonding part 42, and then the pressure cylinder 32 drives the driving wedge 2 to drive the stripping wedge 5 to descend together until the cigarette box 4 is separated to the left from the stripping part 43. In the initial state, the bottom tip of the peeling wedge 5 is in contact with the bonding portion 42 of the cigarette box 4.

[0024] Furthermore, in the initial state, the stripping wedge 5 is in a drooping state, the top of the stripping wedge 5 does not contact the driving wedge 2, and the top of the stripping wedge 5 is separated from the driving wedge 2. A vertical guide block 52 is fixed on the top of the stripping wedge 5, and a vertical guide groove 21 is provided in the driving wedge 2 at a position corresponding to the guide block 52, and the guide block 52 is slidably connected in the guide groove 21. First return members 22 are provided on both sides of the guide block 52, and the first return member 22 can be a compression spring. The top end of the first return member 22 is fixed to the inner wall of the driving wedge 2, and the bottom end is fixed to the stripping wedge 5, so as to connect the stripping wedge 5 and the driving wedge 2 together. A contact switch 23 is fixed to the inner top wall of the driving wedge 2 corresponding to the guide groove 21, and the guide block 52 will trigger the contact switch 23 during the upward movement.

[0025] The detection device further includes an external control unit (not shown), the contact switch 23 is electrically connected to the control unit, and the control unit is electrically connected to both the first pressure gauge 33 and the second pressure gauge 6 .

[0026] During the detection, the stripping wedge 5 is first moved to the position corresponding to the bonding part 42 of the cigarette box 4 and stops. In the initial state, the bottom tip of the stripping wedge 5 contacts the surface of the bonding part 42 of the cigarette box 4, and then the pressure cylinder 32 drives the driving wedge 2 to gradually descend. During the pressure application process, since the stripping wedge 5 and the driving wedge 2 are slidably connected and do not contact each other in the initial state, the stripping wedge 5 first abuts against the cigarette box 4 and remains stationary, while the driving wedge 2 gradually decreases in height. Until the driving wedge 2 descends to the point where the contact switch 23 inside it abuts against the guide block 52, the first pressure gauge 33 begins to detect the real-time pressure value. At this time, the first restoring member 22 is deformed under pressure to generate a restoring force, but since the driving wedge 2 and the stripping wedge 5 are combined as a whole and descend synchronously, the first pressure gauge 33 still only detects the pressure applied by the pressure cylinder 32 to the driving wedge 2. The driving wedge 2 begins to press down the adhesive part 42 of the cigarette box 4 together with the stripping wedge 5. At the moment when the adhesive part 42 of the cigarette box 4 separates the stripping part 43, the stripping wedge 5 is pushed by the restoring force generated by the first restoring member 22 and instantly inserted downward into the gap separated by the adhesive part 42. At this time, the top of the stripping wedge 5 is separated from the contact switch 23, and the contact switch 23 sends a separation signal to the control unit. At this time, the control unit sends a locking signal to the first pressure gauge 33, and the first pressure gauge 33 locks the pressure value detected by itself at the moment of separation and displays it externally through the display screen. Since the stripping wedge 5 is inserted into the gap at the moment of separation of the adhesive part 42, compared with direct observation by the human eye, the action of the stripping wedge 5 is faster and can more accurately reflect the moment of separation, and the pressure value data finally obtained by the first pressure gauge 33 more accurately reflects the pressure value at the moment of separation of the adhesive part 42, thereby greatly improving the accuracy of the adhesive strength test of the cigarette box 4 sample, and then indirectly improving the accuracy of the white cardboard quality test results.

[0027] To further improve the accuracy of detection, refer to Figures 3 to 5 The transmitting module 15 can emit laser in the horizontal direction. Before the detection starts, the vertical setting height of the transmitting module 15 is lower than the height of the bottom tip of the stripping wedge 5 in the initial state, and the transmitting module 15 emits laser in the direction of the stripping wedge 5. The specific height of the transmitting module 15 can be adjusted according to the actual situation, as long as it is slightly lower than the height of the bottom tip of the stripping wedge 5 in the initial state. A receiving module 53 is fixed on the side of the stripping wedge 5 away from the transmitting module 15. The transmitting module 15 and the receiving module 53 are both electrically connected to the control unit. The receiving module 53 can receive the laser signal emitted by the transmitting module 15.

[0028] The stripping wedge 5 is provided with a signal optical fiber 7, one end of which is horizontally oriented toward the transmitting module 15, and the other end of which is at the same height as the receiving module 53 and is oriented toward the receiving module 53. The end of the signal optical fiber 7 that is oriented toward the transmitting module 15 is movably connected to the stripping wedge 5. Specifically, the stripping wedge 5 is provided with a vertical slide groove 54 corresponding to the end of the signal optical fiber 7 that is close to the transmitting module 15, so that the end of the signal optical fiber 7 that is close to the transmitting module 15 can adjust the height position according to actual conditions, so that the signal optical fiber 7 can better match the height of the transmitting module 15. In the process of inserting the stripping wedge 5 into the gap of the bonding part 42, when the stripping wedge 5 drives the signal optical fiber 7 to descend to the same height as the transmitting module 15, the laser emitted by the transmitting module 15 is transmitted to the receiving module 53 along the signal optical fiber 7. After receiving the laser signal, the receiving module 53 sends the laser signal to the control unit, and then the control unit sends a stop pressure signal to the pressure cylinder 32, and the pressure cylinder 32 stops applying pressure to the driving wedge 2.

[0029] Since the peeling part 43 is separated from the cigarette box 4 body, the peeling part 43 will spread away from the cigarette box 4 body at the moment of separation, and the peeling part 43 will therefore apply a horizontal force to the pressure probe of the second pressure gauge 6. If the second pressure gauge 6 detects this force, it will send a pressure signal to the control unit. If the control unit detects both the laser signal and the pressure signal, the reading displayed by the first pressure gauge 33 is valid at this time, because if the control unit only receives the laser signal, but the second pressure gauge 6 does not detect the pressure signal, it may be because the peeling wedge 5 is not aligned with the bonding part 42 to press down; if the control unit does not receive the laser signal, but the second pressure gauge 6 detects a pressure signal, it may be because the position of the cigarette box 4 is offset during the pressing process. The pressure values ​​detected in both cases are invalid and need to be re-tested.

[0030] To further improve the accuracy of detection, refer to Figure 6, a separation block 55 is slidably connected inside the stripping wedge 5, the sliding direction of the separation block 55 is perpendicular to the stripping inclined surface 51, and the separation block 55 can slide out of the stripping wedge 5 from the stripping inclined surface 51, and the side of the separation block 55 close to the stripping inclined surface 51 is an arc surface. A first suction member 56, a second suction member 57 and a second return member 58 are arranged inside the stripping wedge 5, wherein the first suction member 56 is an electromagnet, the first suction member 56 is fixed in the stripping wedge 5, and is electrically connected to the control unit. The second suction member 57 is made of iron material, and the second suction member 57 is fixed to one end of the separation block 55 away from the stripping inclined surface 51, and the first suction member 56 and the second suction member 57 correspond in position. The second return member 58 can be a compression spring, one end of the second return member 58 is fixed to the inner wall of the stripping wedge 5, and the other end is fixed to the separation block 55. The first attraction member 56 can be externally connected to a power supply, and after being energized, the first attraction member 56 generates magnetism and is adsorbed together with the second attraction member 57 , and the second restoring member 58 is compressed.

[0031] When the stripping wedge 5 is inserted into the gap of the bonding part 42, the contact switch 23 sends a separation signal to the control unit, and the control unit also sends a power-off command to the first suction member 56. At this time, the first suction member 56 is powered off and loses its magnetism. At this time, the second suction member 57 is pushed away from the first suction member 56 by the restoring force generated by the deformation of the second restoring member 58, and the separation block 55 is instantly ejected from the stripping slope 51 to the outside of the stripping wedge 5. The ejected separation block 55 applies a force away from the cigarette box 4 body to the already separated stripping part 43, so that the stripping part 43 is further spread outward. The further spread outward stripping part 43 can apply a greater and more obvious pressure to the second pressure gauge 6, making the second pressure gauge 6 easier to detect, thereby improving the detection sensitivity of the pressure signal. At the same time, when the separation gap is opened wider, it is also convenient for the stripping wedge 5 to be inserted into the gap, and it is helpful to separate the residual glue at the gap, so that the stripping wedge 5 can fall.

[0032] In order to prevent the stripping wedge 5 from adhering to the residual glue at the bonding point 42, the stripping bevel 51 of the stripping wedge 5 and the side wall surface away from the stripping bevel 51 are coated with an anti-stick coating. The anti-stick coating can be made of polytetrafluoroethylene or fluorocarbon coating, which can effectively prevent the surface of the stripping wedge 5 from adhering to the residual glue.

[0033] The implementation principle of a quality inspection device for white cardboard production in Example 1 of the present application is as follows: at the moment when the peeling part 43 is separated from the bonding part 42 of the cigarette box 4, the peeling wedge 5 is pushed by the restoring force generated by the first restoring member 22, and is instantly inserted downward into the gap separated by the bonding part 42. At this time, the top of the peeling wedge 5 is separated from the contact switch 23, and the contact switch 23 sends a separation signal to the control unit. At this time, the control unit sends a locking signal to the first pressure gauge 33, and the first pressure gauge 33 locks the pressure value detected by itself at the moment of separation, and displays it to the outside through the display screen, which can more accurately reflect the pressure value at the moment of separation of the bonding part 42. At the same time, a dual feedback mechanism of pressure signal and laser signal is adopted. If both feedbacks are obtained, the detection result is valid. If only one of the feedbacks is obtained, the detection result is invalid, which further improves the accuracy of the detection of the sample of the cigarette box 4 to be detected, so that the accuracy of the quality inspection result of the final white cardboard product is improved. Example 2

[0034] Embodiment 2 of the present application discloses a quality inspection method for white cardboard production, which uses the quality inspection device for white cardboard production as in Embodiment 1 to inspect the final production quality of white cardboard, including the following steps: S1: Place the cigarette box 4 to be tested on the workbench 1 and fix the position, align the bottom tip of the stripping wedge 5 with the bonding part 42 of the cigarette box 4, start the pressure cylinder 32, and the pressure cylinder 32 applies downward pressure to the stripping wedge 5 by driving the wedge 2, and gradually increases the applied pressure. The first pressure gauge 33 continuously detects the pressure value applied downward by the pressure supply mechanism 3. At the moment when the bonding part 42 of the cigarette box 4 is separated, the first return member 22 pushes the stripping wedge 5 downward to insert into the gap between the bonding part 42, and separates the bonding part 42 of the cigarette box 4 to form a stripping part 43. At this time, the stripping wedge 5 and the contact switch 23 are in contact with each other. Disengagement, the control unit sends a signal to the first pressure gauge 33, the first pressure gauge 33 locks the pressure value currently detected by itself and displays it externally, the laser emitted by the transmitting module 15 is transmitted to the receiving module 53 via the signal optical fiber 7, the receiving module 53 sends a laser signal to the control unit, the control unit sends a signal to stop applying pressure to the pressure supply mechanism 3, and because the peeling wedge 5 pushes the peeling part 43 away from the cigarette box 4 body, the peeling part 43 contacts the second pressure gauge 6, the second pressure gauge 6 detects the horizontal force applied by the peeling part 43, and the second pressure gauge 6 sends a pressure signal to the control unit; S2: The pressure value displayed by the first pressure gauge 33 is defined as the adhesive strength of the cigarette box to be tested. When the adhesive strength is less than 28N, it is judged to be unqualified. For the cigarette box 4 samples with unqualified adhesive strength, white cardboard produced in the same batch as the unqualified cigarette box 4 samples is re-selected to perform quality tests on other strength indicators to determine whether it is a common quality problem. The number of white cardboards re-selected for quality testing needs to be increased accordingly; S3: During the detection, the control unit must receive the laser signal and the pressure signal at the same time, and the detection result will be considered valid. Otherwise, readjust and continue the detection.

[0035] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A quality inspection device for white cardboard production, characterized in that: include A workbench for placing cigarette boxes; A driving wedge is located above the workbench and can be lifted vertically. A stripping wedge is vertically slidably connected to the bottom tip of the driving wedge. In an initial state, the bottom tip of the stripping wedge is used to contact the adhesive portion of the cigarette case. A contact switch is provided at the top position of the driving wedge corresponding to the stripping wedge. A first return member is provided between the driving wedge and the stripping wedge. A pressure supply mechanism, used for applying vertical downward pressure to the driving wedge, wherein a first pressure gauge is provided between the driving wedge and the pressure supply mechanism, and the first pressure gauge can record and display the pressure value applied by the pressure supply mechanism to the driving wedge; A second pressure gauge is used to be arranged on a side of the stripping wedge away from the cigarette box, and the second pressure gauge is used to detect the horizontal force applied by the stripping portion of the cigarette box; A control unit, wherein the contact switch is electrically connected to the control unit, and the control unit is electrically connected to a first pressure gauge. When the stripping wedge is disengaged from the contact switch, the first pressure gauge locks the current pressure value.

2. The quality inspection device for white cardboard production according to claim 1, characterized in that: A transmitting module is provided on one side of the working table at the driving wedge, for transmitting laser in the horizontal direction. The setting height of the transmitting module is lower than the height of the bottom tip of the stripping wedge in the initial state, and the transmitting module transmits laser in the direction of the stripping wedge. A receiving module is fixed on the side of the stripping wedge away from the transmitting module. Both the transmitting module and the receiving module are electrically connected to the control unit. When the receiving module is at the same height as the transmitting module, the receiving module receives the laser signal from the transmitting module, and the pressure supply mechanism stops applying pressure.

3. The quality inspection device for white cardboard production according to claim 2, characterized in that: A signal optical fiber is passed through the stripping wedge, one end of the signal optical fiber is horizontally facing one side of the transmitting module, the other end of the signal optical fiber is in the same height as the receiving module and faces the receiving module, and the end of the signal optical fiber facing the transmitting module is movably connected to the stripping wedge.

4. The quality inspection device for white cardboard production according to claim 1, characterized in that: The second pressure gauge is placed horizontally and includes a pressure probe facing the direction of the stripping wedge. The setting height of the pressure probe is lower than the height of the bottom tip of the stripping wedge in the initial state. The pressure probe is used to be placed close to the stripping part of the cigarette box to detect the force applied in the horizontal direction when the stripping part is separated.

5. The quality inspection device for white cardboard production according to claim 4, characterized in that: The stripping wedge comprises a stripping bevel, which is arranged on a side of the stripping wedge close to the second pressure gauge, and the distance between the stripping bevel and the pressure probe gradually increases from top to bottom.

6. The quality inspection device for white cardboard production according to claim 5, characterized in that: A separation block is slidably connected inside the stripping wedge, and the separation block can slide out of the stripping wedge from the stripping inclined surface. An attraction assembly is arranged inside the stripping wedge for controlling the separation block to extend or retract into the stripping wedge.

7. The quality inspection device for white cardboard production according to claim 6, characterized in that: The suction component includes a first suction component, a second suction component and a second return component. The first suction component is fixed in the stripping wedge and electrically connected to the control unit. The second suction component is fixed to the separation block. The first suction component and the second suction component correspond in position. One end of the second return component is connected to the stripping wedge and the other end is connected to the separation block. The first suction component can be connected to an external power supply, and the first suction component is adsorbed together with the second suction component after power is turned on.

8. The quality inspection device for white cardboard production according to claim 4, characterized in that: The stripping wedge is provided with an anti-sticking coating on the stripping inclined surface and the side wall surface away from the stripping inclined surface.

9. A quality inspection method for white cardboard production, characterized in that: The quality inspection device for white cardboard production according to any one of claims 1 to 8 is used to inspect the quality of white cardboard production, comprising the following steps: S1: Select a sample of a white cardboard product and make a cigarette box sample to be tested, place the cigarette box sample to be tested on a workbench and fix it in position, align the bottom tip of the stripping wedge with the bonding part of the cigarette box, start the pressure supply mechanism, and the pressure supply mechanism applies downward pressure to the stripping wedge, and gradually increases the applied pressure. The first pressure gauge continuously detects the pressure value applied downward by the pressure supply mechanism. At the moment when the bonding part of the cigarette box is separated, the first return member pushes the stripping wedge downward to insert into the gap where the bonding part is separated, and separates the stripping part from the bonding part of the cigarette box. At this time, the stripping wedge is disengaged from the contact switch, and the control unit sends a signal to the first pressure gauge. The first pressure gauge locks the pressure value currently detected by itself and displays it externally. The laser emitted by the transmitting module is transmitted to the receiving module via the signal optical fiber. The receiving module sends a laser signal to the control unit. The control unit sends a signal to stop applying to the pressure supply mechanism. Since the stripping wedge pushes the stripping part away from the cigarette box body, the stripping part contacts the second pressure gauge. The second pressure gauge detects the horizontal force applied by the stripping part, and the second pressure gauge sends a pressure signal to the control unit. S2: The pressure value displayed by the first pressure gauge is defined as the bonding strength of the cigarette box sample to be tested. When the bonding strength is less than 28N, it is judged to be unqualified. For the cigarette box samples with unqualified bonding strength, white cardboard produced in the same batch as the unqualified cigarette box samples is re-selected for quality inspection to determine whether it is a common quality problem; S3: During the detection, the control unit must receive the laser signal and the pressure signal at the same time, and the detection result will be considered valid. Otherwise, readjust and continue the detection.

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