Filling device with bag opening detection function and filling method

Abstract

The invention provides a filling device with a bag opening detection function and a filling method, the filling device with the bag opening detection function is suitable for a filling bag with two cavities, the filling device with the bag opening detection function comprises a filling system, a bag feeding system and a verification system, and the filling system is provided with a material injection unit for injecting raw materials into the two cavities; the bag feeding system is provided with an adsorption part; the detection system is provided with a thickness measuring part and a separation unit, and the thickness measuring part is used for detecting the thickness of the filling bag; when the thickness exceeds a preset value, the bag feeding system stops moving, and the separating unit separates the redundant filling bags; the verification system is provided with a shooting part and a comparison part in communication connection with the material injection unit, the shooting part is used for shooting the opening condition of the filling bag and transmitting shooting data to the comparison part, and the comparison part is used for comparing the shooting data with standard data so as to judge whether the two cavities are both opened or not. The waste of raw materials is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of dialysate filling, and in particular relates to a filling device and a filling method with bag opening detection. Background Art

[0002] As a common packaging container, filling bags are widely used in food, chemical, pharmaceutical and other industries to store and transport liquid, semi-fluid or granular materials.

[0003] During filling, the filling bags are transferred to the filling station through the bag feeding system. The existing bag feeding systems mostly use suction cups to hold the filling bags. The suction cups may hold two filling bags at a time, resulting in the inability to open the bags normally at the filling station, or the opening is too small when the bags are opened at the filling station. The filling system cannot be aware of the bag opening abnormality and continues to work, thereby wasting the raw materials released by the filling system. Summary of the invention

[0004] The embodiments of the present invention provide a filling device and a filling method with bag opening detection, aiming to solve the technical problem of raw materials being wasted when the bag is opened abnormally.

[0005] In a first aspect, the present invention provides a filling device with bag opening detection, suitable for a filling bag with two chambers, comprising: A filling system, comprising a filling station, a bag opening unit for opening both of the two chambers, and a material injection unit for injecting raw materials into the two chambers; A bag feeding system, comprising an adsorption part and a driving mechanism for driving the adsorption part to move to the filling station; The detection system is located on the walking track of the adsorption part. The detection system comprises a thickness measuring part which is communicatively connected with the bag feeding system and a separation unit which is communicatively connected with the thickness measuring part. The thickness measuring part is used to detect the thickness of the filling bag adsorbed by the adsorption part. When the thickness measuring part detects that the thickness of the filling bag exceeds a preset value, the bag feeding system stops moving, and then the separation unit separates the excess filling bags on the adsorption part. A verification system is arranged above the filling station, and the verification system comprises a photographing part and a comparing part which is communicatively connected with the injection unit, the photographing part is used for photographing the opening status of the filling bag and transmitting the photographing data to the comparing part, and the comparing part is used for comparing the photographing data with the standard data to determine whether both the two chambers are opened; if both the chambers are opened, the injection unit is started; if both the chambers are not opened or only one of the chambers is opened, the injection unit is not started.

[0006] In combination with the first aspect, in a possible implementation, the separation unit includes a supporting part, a first power component for driving the supporting part to move in the front-to-back direction, a separation part, and a second power component for driving the separation part to move up and down and perform a twisting action. The supporting part is located below the adsorption part and has a supporting surface parallel to the horizontal plane, and the separation part is used to twist the filling bag on the supporting surface.

[0007] In combination with the first aspect, in a possible implementation, the first power assembly includes a first telescopic part that moves along the left-right direction, and a second telescopic part that is fixedly connected to the end of the first telescopic part, and the second telescopic part moves along the front-back direction and is fixedly connected to the supporting part.

[0008] In combination with the first aspect, in a possible implementation manner, the separation portion is a rotation twisting device; The second power assembly includes a third telescopic part moving in the up-down direction, and a rotating part fixedly connected to the end of the third telescopic part. The rotating part is fixedly connected to the separation part, and the rotating axis of the rotating part is parallel to the left-right direction.

[0009] In combination with the first aspect, in a possible implementation manner, the separation portion is a translation twisting; The power assembly includes a third telescopic portion that moves up and down, and a translation portion that is fixed to the end of the third telescopic portion. The translation portion is fixed to the separation portion, and the translation portion moves in the front-rear direction.

[0010] In combination with the first aspect, in a possible implementation manner, the separation unit further includes a collecting portion for receiving the filling bags, and the collecting portion is fixedly disposed in front of the supporting portion.

[0011] In combination with the first aspect, in a possible implementation, the separation unit also includes a collecting box forming the collecting portion, and a material guide plate is fixedly provided on one side of the collecting box close to the supporting portion, and the material guide plate gradually tilts downward from back to front, and a plurality of material guide rollers are provided on the material guide plate, and a power member for driving the material guide rollers to rotate is provided on the material guide plate.

[0012] Compared with the prior art, the filling device with bag opening detection provided by the present invention has the following features: After the bag opening unit performs the bag opening action on the filling bag, the camera unit takes a picture of the opening of the chamber and transmits the photographed data to the comparison unit for comparison with the standard data. If the comparison result is qualified, it means that the chamber opening is normal, and the injection unit starts to inject raw materials into the chamber; if the comparison result is unqualified, it means that the chamber opening is abnormal, and the injection unit does not start, thereby avoiding the situation where the injection unit injects raw materials outside the filling bag when the chamber opening is abnormal, thereby reducing the waste of raw materials when the bag opening is abnormal, and also reducing production costs.

[0013] The thickness measuring unit and the separation unit are provided to reduce the situation where the bag feeding unit absorbs multiple filling bags at one time, thereby reducing the occurrence of abnormal bag opening of the bag opening unit.

[0014] In a second aspect, the present invention further provides a filling method, comprising the following steps: S10, when the adsorption part adsorbs and lifts the filling bag, the thickness measuring part detects the thickness of the adsorbed filling bag. When the thickness exceeds a preset value, the driving mechanism drives the adsorption part to move upward to a position higher than the thickness measuring part and then stops moving; S20, when the thickness of the filling bag detected by the thickness measuring part exceeds a preset value, the separation unit is started, the separation unit separates the excess filling bags on the adsorption part, and then the driving mechanism drives the adsorption part to move the remaining filling bags to the filling station; S30, after the bag opening unit opens the two chambers of the filling bag, the comparison unit determines whether filling is performed.

[0015] In combination with the second aspect, in a possible implementation, in S30, when both chambers are opened and the opening diameters of the two chambers meet the standard, the injection unit is started; if the opening diameters of both chambers do not meet the standard or the opening diameter of one of the chambers does not meet the standard, the injection unit is not started; if only one chamber is opened or both chambers are not opened, the injection unit is not started.

[0016] In combination with the second aspect, in a possible implementation, the comparison unit is communicatively connected to the bag opening unit, and if the comparison result shows that the injection unit is not started, the bag opening unit re-executes the bag opening action, and then the comparison unit re-compares. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of the verification system and the rotating twisting of the separation part provided in the embodiment of the present invention; Figure 2 A cross-sectional view showing the movement of the guide roller provided in the embodiment of the present invention; Figure 3 A schematic diagram of a structure for reflecting the translational twisting of a separation part provided in an embodiment of the present invention; Figure 4 A system guide diagram for reflecting the workflow between the thickness measuring unit, the bag feeding system, the comparison unit, the bag opening unit and the alarm unit provided in the embodiment of the present invention; Figure 5 A system boot diagram for embodying the activation of an alarm unit is provided in an embodiment of the present invention.

[0018] Description of reference numerals: 10. Verification system; 101. Photographing unit; 102. Comparison unit; 20, thickness measuring part; 201, transmitting part; 202, receiving part; 30, separation unit; 301, supporting part; 3011, supporting surface; 302, separation part; 303, first telescopic part; 3031, substrate; 304, second telescopic part; 305, third telescopic part; 3051, base; 306, rotating part; 307, fixed seat; 3071, suspension rod; 308, collecting part; 309, translation part; 40. material guide plate; 401. material guide trough; 402. material guide roller; 403. power part. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] Please also read Figures 1 to 4 , the filling device with bag opening detection of the present invention is described. A filling device with bag opening detection is suitable for filling bags with two chambers, including a filling system, a bag feeding system, a detection system and a verification system 10, the filling system has a filling station, a bag opening unit that opens both chambers, and a material injection unit that injects raw materials into the two chambers; the bag feeding system has an adsorption part, and a driving mechanism that drives the adsorption part to move to the filling station; the detection system is located on the walking track of the adsorption part, and the detection system has a thickness measuring part 20 that is communicatively connected to the bag feeding system and a separation unit 30 that is communicatively connected to the thickness measuring part 20, the thickness measuring part 20 is used to detect the thickness of the filling bag adsorbed by the adsorption part; when the thickness measuring part When 20 detects that the thickness of the filling bag exceeds the preset value, the bag feeding system stops moving, and then the separation unit 30 separates the excess filling bags on the adsorption part; the verification system 10 is arranged above the filling station, and the verification system 10 has a shooting part 101 and a comparison part 102 which is communicatively connected with the injection unit, the shooting part 101 is used to shoot the opening status of the filling bag and transmit the shooting data to the comparison part 102, and the comparison part 102 is used to compare the shooting data with the standard data to determine whether both chambers are open; if both chambers are open, the injection unit is started; if both chambers are not opened or only one chamber is opened, the injection unit is not started.

[0021] Specifically, the shooting part 101 is a camera, the comparing part 102 is a computer; the thickness measuring part 20 is an infrared thickness gauge, which includes a transmitting part 201 and a receiving part 202. The transmitting part 201 emits infrared rays, and the receiving part is used to receive infrared rays. The area between the transmitting part 201 and the receiving part 202 is a corresponding area. When the bag feeding unit drives the filling bag to move upward, the filling bag is located in the corresponding area.

[0022] It should be noted that the bag feeding system is a mobile device with a suction cup, the filling system is a filling device that can control the liquid filling amount, and the bag opening unit is a bag opening device that can open both chambers of the filling bag. The bag feeding system, the filling system and the bag opening unit are prior arts and are not described in detail in this application and are not shown.

[0023] It should be noted that the standard data is a photo of the two chambers of the filling bag with normal openings.

[0024] Compared with the prior art, the filling device with bag opening detection provided in this embodiment has the following advantages: After the bag opening unit performs the bag opening action on the filling bag, the photographing unit 101 takes a picture of the opening of the chamber and transmits the photographed data to the comparison unit 102 for comparison with the standard data. If the comparison result is qualified, it means that the chamber opening is normal, and the injection unit starts to inject raw materials into the chamber; if the comparison result is unqualified, it means that the chamber opening is abnormal, and the injection unit does not start, thereby avoiding the situation where the injection unit injects raw materials outside the filling bag when the chamber opening is abnormal, thereby reducing the waste of raw materials when the bag opening is abnormal, and also reducing production costs.

[0025] When the bag feeding system sucks multiple filling bags at one time, the bag feeding system drives the sucked filling bags to move upward and pass through the infrared thickness gauge's shooting area. The thickness value recognized by the infrared thickness gauge exceeds the preset range. At this time, the separation unit 30 removes the excess filling bags, and the bag feeding system continues to transport the filling bags located on the inside to the filling station. In this way, it is avoided to transport multiple filling bags to the filling station at one time.

[0026] In one embodiment, see Figure 1 The separation unit 30 includes a supporting part 301, a first power component for driving the supporting part 301 to move in the front-rear direction, a separation part 302, and a second power component for driving the separation part 302 to move up and down and perform a twisting action. The supporting part 301 is located below the adsorption part and has a supporting surface 3011 parallel to the horizontal plane. The separation part 302 is used to twist the filling bag on the supporting surface, and the supporting part 301 is a supporting plate.

[0027] Specifically, the first power assembly includes a first telescopic portion 303 that moves in the left-right direction, a second telescopic portion 304 that is fixedly connected to the end of the first telescopic portion 303, and the second telescopic portion 304 that moves in the front-back direction and is fixedly connected to the supporting portion 301. Specifically, the separation part 302 is a rotating twister; the second power assembly includes a third telescopic part 305 that moves in the up and down directions, and a rotating part 306 fixed to the end of the third telescopic part 305, the rotating part 306 is fixed to the separation part 302, and the rotation axis of the rotating part 306 is parallel to the left and right directions.

[0028] It should be noted that the first telescopic part 303 , the second telescopic part 304 and the third telescopic part 305 are all electric cylinders, the rotating part 306 is a rotating motor, and the separating part 302 is a separating wheel.

[0029] Specifically, the separation unit 30 also includes a fixed seat 307 arranged on one side of the bag feeding system, one end of the first telescopic part 303 is fixedly connected to the fixed seat 307, a base plate 3031 is fixedly provided at the end of the piston rod of the first telescopic part 303, one end of the second telescopic part 304 is fixedly connected to the base plate 3031, the piston rod end of the second telescopic part 304 is fixedly connected to the supporting part 301, a suspension rod 3071 is fixedly provided on the fixed seat 307, the third telescopic part 305 is fixedly provided at one end of the suspension rod 3071 away from the fixed seat 307, a base 3051 is fixedly provided at the end of the piston rod of the third telescopic part 305, and the separation part 302 is rotatably connected to the base 3051 around its own central axis.

[0030] It should be noted that the side of the filling bag facing the filling system is the front, and the side of the thickness measuring portion 20 facing the fixing seat 307 is the left.

[0031] When the thickness value exceeds the preset value, the first telescopic part 303 starts to extend the base plate 3031 and the supporting part 301 into the rear of the filling bag, and then the second telescopic part 304 starts to drive the supporting part 301 to extend, thereby changing the bottom of the filling bag from a vertical state to a horizontal state, and then the third telescopic part 305 starts to drive the base 3051 to extend, so that the separation part 302 abuts against the filling bag located above, and finally the rotating part 306 starts to separate the filling bags and only keep one filling bag sucked by the adsorption part.

[0032] Taking the example of the adsorption part sucking two filling bags at one time, when the separation part 302 twists the filling bags, the separation part 302 will generate friction with the filling bag located above, and the above friction is greater than the adhesion between the two filling bags, so that the filling bag located above will be driven forward by the separation part 302, and the above friction is less than the adsorption force of the adsorption part on the filling bag located below, so that the filling bag located below remains motionless due to being adsorbed by the adsorption part, thereby achieving separation of the two filling bags.

[0033] In one embodiment, see Figure 1 and Figure 3 The separation unit 30 includes a supporting part 301, a first power component for driving the supporting part 301 to move in the front-to-back direction, a separation part 302, and a second power component for driving the separation part 302 to move up and down and perform a twisting action. The supporting part 301 is located below the adsorption part and has a supporting surface 3011 parallel to the horizontal plane. The separation part 302 is used to twist the filling bag on the supporting surface.

[0034] Specifically, the first power assembly includes a first telescopic portion 303 that moves along the left-right direction, and a second telescopic portion 304 that is fixedly connected to the end of the first telescopic portion 303 . The second telescopic portion 304 moves along the front-back direction and is fixedly connected to the supporting portion 301 .

[0035] Specifically, the separation part 302 is a translation twister; the second power assembly includes a third telescopic part 305 that moves in the up and down directions, and a translation part 309 fixed to the end of the third telescopic part 305. The translation part 309 is fixed to the separation part 302, and the translation part 309 moves in the front and back directions.

[0036] It should be noted that the first telescopic part 303 , the second telescopic part 304 , the third telescopic part 305 and the translation part 309 are all electric cylinders, and the separation part 302 is a separation wheel.

[0037] Specifically, the separation unit 30 also includes a fixed seat 307 arranged on one side of the bag feeding system, one end of the first telescopic part 303 is fixedly connected to the fixed seat 307, a base plate 3031 is fixedly provided at the end of the piston rod of the first telescopic part 303, one end of the second telescopic part 304 is fixedly connected to the base plate 3031, the end of the piston rod of the second telescopic part 304 is fixedly connected to the supporting part 301, a suspension rod 3071 is fixedly provided on the fixed seat 307, and the third telescopic part 305 is fixedly provided at one end of the suspension rod 3071 away from the fixed seat 307.

[0038] It should be noted that the side of the filling bag facing the filling system is the front, and the side of the thickness measuring portion 20 facing the fixing seat 307 is the left.

[0039] When the thickness value exceeds the preset value, the first telescopic part 303 starts to extend the base plate 3031 and the supporting part 301 into the rear of the filling bag, and then the second telescopic part 304 starts to drive the supporting part 301 to extend, thereby changing the bottom of the filling bag from a vertical state to a horizontal state, and then the third telescopic part 305 starts to drive the base 3051 to extend, so that the separation part 302 abuts against the filling bag located above, and the translation part 309 starts to drive the filling bag located above to move forward through the separation part 302, and then the third telescopic part 305 starts to drive the base 3051 to retract, and at the same time the translation part 309 starts to drive the separation part 302 to move backward, thereby reciprocating until only one filling bag is left and is sucked by the adsorption part.

[0040] In one embodiment, see Figure 1 The separation unit 30 also includes a collecting portion 308 for receiving the filling bags, and the collecting portion 308 is fixed in front of the supporting portion 301.

[0041] After the two filling bags are separated, the separated filling bags enter the collecting section 308 , and then the staff can recycle the filling bags in the collecting section 308 for reuse.

[0042] In one embodiment, see Figure 1 and Figure 2 The separation unit 30 also includes a collecting box forming a collecting portion 308, and a material guide plate 40 is fixedly provided on one side of the collecting box close to the supporting portion 301. The material guide plate 40 gradually tilts downward from the back to the front, and a plurality of material guide rollers 402 are provided on the material guide plate 40. The material guide plate 40 is provided with a power member for driving the material guide rollers 402 to rotate.

[0043] Specifically, a material guide groove 401 is provided on the top surface of the material guide plate 40 , and a plurality of material guide rollers 402 are arranged in the material guide groove 401 . The material guide rollers 402 are rotatably connected to the inner wall of the material guide groove 401 around their own central axes. The power part is a driving motor, and the output shaft of the driving motor is fixedly connected to the material guide rollers 402 .

[0044] The separation part 302 drives the filling bag to move forward, and the filling bag enters the surface of the guide plate 40. The power part is started to rotate the guide roller 402, thereby giving the separated filling bag a force to continue to move forward, thereby guiding the separated filling bag into the collection box.

[0045] Based on the same inventive concept, this embodiment also provides a filling method, the steps are as follows: S10, during the process of the adsorption part adsorbing the filling bag and lifting it, the thickness measuring part 20 detects the thickness of the adsorbed filling bag. When the thickness exceeds the preset value, the driving mechanism drives the adsorption part to move upward to a position higher than the thickness measuring part 20 and then stops moving; S20, when the thickness of the filling bag detected by the thickness measuring part 20 exceeds the preset value, the separation unit 30 is started, the separation unit 30 separates the excess filling bags on the adsorption part, and then the driving mechanism drives the adsorption part to move the remaining filling bags to the filling station; S30 , after the bag opening unit opens the two chambers of the filling bag, the comparison unit 102 compares and determines whether the bag is filled.

[0046] In some embodiments, in S30, when both chambers are opened and the opening diameters of the two chambers meet the standard, the injection unit is started; if the opening diameters of both chambers do not meet the standard or the opening diameter of one of the chambers does not meet the standard, the injection unit is not started; if only one chamber is opened or both chambers are not opened, the injection unit is not started.

[0047] In one embodiment, see Figure 1 and Figure 4 The comparison unit 102 is connected to the bag opening unit for communication. If the comparison result shows that the injection unit is not started, the bag opening unit re-executes the bag opening action, and then the comparison unit 102 re-compares.

[0048] In one embodiment, see Figure 1 and Figure 5 The verification system 10 further includes an alarm unit (not shown) communicatively connected to the comparison unit 102. If the first comparison result is that the injection unit is started, the alarm unit does not work; if the first comparison result is that the injection unit is not started, and the second comparison result is that the injection unit is started, the alarm unit does not work; if the first comparison result is that the injection unit is not started, and the second comparison result is that the injection unit is not started, the alarm unit issues an alarm.

[0049] If both comparisons fail, the alarm department will sound an alarm to remind the staff to check or repair, so as to discover and solve the problem in time.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A filling device with bag opening detection, suitable for filling bags with two chambers, characterized in that: include: A filling system, comprising a filling station, a bag opening unit for opening both of the two chambers, and a material injection unit for injecting raw materials into the two chambers; A bag feeding system, comprising an adsorption part and a driving mechanism for driving the adsorption part to move to the filling station; The detection system is located on the walking track of the adsorption part. The detection system comprises a thickness measuring part which is communicatively connected with the bag feeding system and a separation unit which is communicatively connected with the thickness measuring part. The thickness measuring part is used to detect the thickness of the filling bag adsorbed by the adsorption part. When the thickness measuring part detects that the thickness of the filling bag exceeds a preset value, the bag feeding system stops moving, and then the separation unit separates the excess filling bags on the adsorption part. A verification system is arranged above the filling station, and the verification system comprises a photographing part and a comparing part which is communicatively connected with the injection unit, the photographing part is used for photographing the opening status of the filling bag and transmitting the photographing data to the comparing part, and the comparing part is used for comparing the photographing data with the standard data to determine whether both the two chambers are opened; if both the chambers are opened, the injection unit is started; if both the chambers are not opened or only one of the chambers is opened, the injection unit is not started.

2. The filling device with bag opening detection as claimed in claim 1, characterized in that: The separation unit includes a supporting part, a first power component for driving the supporting part to move in the front-to-back direction, a separation part, and a second power component for driving the separation part to move up and down and perform a twisting action. The supporting part is located below the adsorption part and has a supporting surface parallel to the horizontal plane. The separation part is used to twist the filling bag on the supporting surface.

3. The filling device with bag opening detection as claimed in claim 2, characterized in that: The first power assembly includes a first telescopic part that moves along the left-right direction, and a second telescopic part that is fixedly connected to the end of the first telescopic part. The second telescopic part moves along the front-back direction and is fixedly connected to the supporting part.

4. The filling device with bag opening detection as claimed in claim 2, characterized in that: The separation part is a rotary twisting part; The second power assembly includes a third telescopic part moving in the up-down direction, and a rotating part fixedly connected to the end of the third telescopic part. The rotating part is fixedly connected to the separation part, and the rotating axis of the rotating part is parallel to the left-right direction.

5. The filling device with bag opening detection as claimed in claim 2, characterized in that: The separation part is a translation twisting part; The power assembly includes a third telescopic part that moves up and down, and a translation part that is fixed to the end of the third telescopic part. The translation part is fixed to the separation part, and the translation part moves in the front-rear direction.

6. The filling device with bag opening detection as claimed in claim 2, characterized in that: The separation unit further comprises a collecting portion for receiving the filling bag, and the collecting portion is fixedly arranged in front of the supporting portion.

7. The filling device with bag opening detection as claimed in claim 6, characterized in that: The separation unit also includes a collecting box forming the collecting portion, a material guide plate is fixedly provided on one side of the collecting box close to the supporting portion, the material guide plate gradually tilts downward from back to front, a plurality of material guide rollers are provided on the material guide plate, and a power member for driving the material guide rollers to rotate is provided on the material guide plate.

8. A filling method, using the filling device with bag opening detection according to any one of claims 1 to 7, characterized in that: Here are the steps: S10, when the adsorption part adsorbs and lifts the filling bag, the thickness measuring part detects the thickness of the adsorbed filling bag. When the thickness exceeds a preset value, the driving mechanism drives the adsorption part to move upward to a position higher than the thickness measuring part and then stops moving; S20, when the thickness of the filling bag detected by the thickness measuring part exceeds a preset value, the separation unit is started, the separation unit separates the excess filling bags on the adsorption part, and then the driving mechanism drives the adsorption part to move the remaining filling bags to the filling station; S30, after the bag opening unit opens the two chambers of the filling bag, the comparison unit determines whether filling is performed.

9. The filling method according to claim 8, characterized in that: In S30, when both chambers are opened and the opening diameters of the two chambers meet the standard, the injection unit is started; if the opening diameters of both chambers do not meet the standard or the opening diameter of one of the chambers does not meet the standard, the injection unit is not started; if only one chamber is opened or both chambers are not opened, the injection unit is not started.

10. The filling method according to claim 9, characterized in that: The comparison part is in communication connection with the bag opening unit. If the comparison result shows that the injection unit is not started, the bag opening unit re-executes the bag opening action, and then the comparison part re-compares.

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