Bag making machine and bag roll anti-deviation device

Abstract

The present invention relates to the technical field of bag making machines, and in particular to a bag making machine and a bag roll anti-deviation device, comprising a photoelectric sensor, two of which are symmetrically arranged on the left and right sides of a bag body; a flattening assembly is also symmetrically arranged on the left and right sides of the bag body; the photoelectric sensor and the flattening assembly are arranged in sequence along the conveying direction of the bag body; the flattening assembly includes a U-shaped frame and two inclined plates arranged on the U-shaped frame; the flattening assembly also includes a main pipe and two branch pipes, the main pipe is equipped with a pulse valve, one end of the branch pipe is connected to the main pipe, and the air flow blown out from the other end is blown obliquely to the edge of the bag body; the folded portion at the edge of the bag body can increase the inclination angle between the upper and lower surfaces of the bag body under the action of the air flow blown out from the other end of the branch pipe. The present invention can effectively prevent the bag body from deviating due to the presence of the folded portion at the edge of the bag body.

Description

Technical Field

[0001] The present invention relates to the technical field of bag making machines, in particular to a bag making machine and a bag roll anti-deviation device. Background Art

[0002] Medical packaging bags, made of a composite film of paper on one side and plastic on the other, are used to package sterilized medical devices. Medical packaging bags are manufactured using bag-making machines. During the bag-making process, if a fold forms on the edge of a roll bag, this folded portion can slip or misalign during conveying and rewinding due to uneven thickness or shape. This folded portion can also cause the roll bag to deviate due to increased friction with the conveyor rollers or uneven tension. However, current anti-drift systems typically use photoelectric sensors to identify the edge position of the roll bag. When the folded portion of the roll bag moves to the photoelectric sensor position, the sensor identifies the roll bag as deviating, prompting the control module to issue a correction command to the actuator. This not only fails to achieve the anti-drift function, but can also cause roll bags that were not originally deviating to deviate due to incorrect photoelectric sensor recognition. Summary of the Invention

[0003] The object of the present invention is to provide a bag making machine and a bag roll anti-deviation device to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A device for preventing a roll bag from running off the track, comprising a photoelectric sensor, wherein two photoelectric sensors are provided and symmetrically arranged on the left and right sides of the bag body;

[0006] Flattening components are symmetrically arranged on the left and right sides of the bag body;

[0007] The photoelectric sensor and the flattening assembly are sequentially arranged along the conveying direction of the bag body;

[0008] The flattening assembly includes a U-shaped frame and two inclined plates arranged on the U-shaped frame, and the two inclined plates are symmetrically arranged on the upper and lower sides of the bag body;

[0009] The flattening assembly further comprises a main pipe and two branch pipes, wherein a pulse valve is installed on the main pipe, one end of the branch pipe is connected to the main pipe, and the air flow blown out from the other end is obliquely blown to the edge of the bag body;

[0010] The folded portion at the edge of the bag body can increase the inclination angle between the upper and lower surfaces of the bag body under the action of the airflow blown out from the other end of the branch pipe.

[0011] Preferably, the inclined plate is connected to the U-shaped frame via an elastic component;

[0012] The other end of the branch pipe is fixedly connected to a flat head, and the flat airflow blown out from the flat opening of the flat head is directed toward the folded portion;

[0013] The flat airflow portion is blown toward an end of the corresponding inclined plate close to the bag body.

[0014] Preferably, the elastic component includes a first straight spring and a second straight spring connected between the inclined plate and the U-shaped frame, and the distance between the first straight spring and the second straight spring and the bag body gradually decreases as they gradually approach the bag body.

[0015] Preferably, a first bolt and a second bolt are threadedly connected to the U-shaped frame, one end of the first bolt is rotatably connected to one end of the first straight spring, and one end of the second bolt is rotatably connected to one end of the second straight spring.

[0016] Preferably, a limiting rod is provided on the other side of the inclined plate relative to the flat opening, the top end of the limiting rod is fixedly connected to the U-shaped frame, and the bottom end of the limiting rod is bent toward the inclined plate and provided with a round head.

[0017] Preferably, the inclined plate is provided with a curved bottom at one end close to the bag body;

[0018] The first straight spring and the second straight spring are both connected to the inclined plate through a connecting seat.

[0019] Preferably, the U-shaped frame and the photoelectric sensor are fixedly connected via a connecting frame;

[0020] A mounting plate is provided at the bottom of the bag body, and the connecting frame is provided on the mounting plate.

[0021] Preferably, the mounting plate is rotatably connected to two threaded sleeves, the axes of the threaded sleeves are parallel to the width direction of the bag body, the spiral directions of the internal threads of the two threaded sleeves are opposite, each threaded sleeve is threadedly connected to a threaded rod, and the two threaded rods are respectively fixedly connected to the two connecting frames;

[0022] A guide sleeve is fixedly mounted on the mounting plate, a guide rod is slidably passed through the guide sleeve, the guide rod is parallel to the threaded sleeve, and the guide rod is fixedly connected to the connecting frame.

[0023] Preferably, the mounting plate includes a support plate portion and an inclined plate portion fixedly connected to both ends of the support plate portion, one end of the inclined plate portion is fixedly connected to the mounting portion, and the mounting portion is provided with a mounting hole;

[0024] The threaded sleeve is rotatably connected to the top of the support plate portion, and the guide sleeve is fixedly installed on the top of the support plate portion.

[0025] A bag making machine comprises the above-mentioned roll bag anti-deviation device.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The present invention sets two photoelectric sensors to monitor the edge positions of both sides of the bag body at the same time, thereby avoiding misjudgment caused by the folding of the edge part of the bag body during detection by a single photoelectric sensor, and preventing the originally normal bag body from deviating due to system misjudgment; then, the folded part of the edge of the bag body can be flattened by setting the inclined plate and the main pipe, pulse valve and branch pipe to prevent the bag body from deviating due to the existence of the folded part; further, the present invention can make the inclined plate produce continuous shaking, and the shaking is mainly located at the end of the inclined plate close to the bag body, so that the folded part originally close to the bag body can be gradually lifted by the shaking, so that the angle between the folded part and the bag body is gradually increased, thereby ensuring the flattening effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the top view of the bag body of the present invention;

[0030] Figure 3 For the present invention Figure 2 A in the middle is an enlarged structural diagram;

[0031] Figure 4 This is a schematic diagram of the partial structure of the bag body of the present invention from the front;

[0032] Figure 5 It is a structural schematic diagram of the present invention;

[0033] Figure 6 This is a front structural diagram of the U-shaped frame and branch pipes of the present invention;

[0034] Figure 7 For the present invention Figure 6 The enlarged structural diagram at B in the middle;

[0035] Figure 8 For the present invention Figure 7 The enlarged structural diagram at C in the middle;

[0036] Figure 9 It is a structural schematic diagram of the flat head of the present invention;

[0037] Figure 10 This is a schematic structural diagram of the first bolt of the present invention;

[0038] Figure 11 Schematic diagram of the top view of the inclined plate and the flat head of the present invention;

[0039] Figure 12 It is a schematic structural diagram of the first bolt, the second bolt, the first straight spring, and the second straight spring of the present invention.

[0040] In the figure: 1. photoelectric sensor; 2. U-shaped frame; 21. arm; 3. inclined plate; 31. arc bottom; 32. connecting seat; 4. first bolt; 5. second bolt; 6. first straight spring; 7. second straight spring; 8. limit rod; 81. round head; 9. main pipe; 10. pulse valve; 11. branch pipe; 12. flat head; 121. flat mouth; 13. connecting frame; 14. mounting plate; 141. support plate; 142. inclined plate; 143. mounting part; 144. mounting hole; 15. threaded sleeve; 16. threaded rod; 17. bearing seat; 18. guide rod; 19. guide sleeve; 20. baffle; 100. bag body; 1001. groove; 1002. folding part. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] See also Figures 1-12 , the present invention provides a technical solution:

[0043] A device for preventing a roll bag from running away includes a photoelectric sensor 1. Currently, the anti-runaway principle of the photoelectric sensor 1 is as follows: the photoelectric sensor 1 converts the position information of the object surface into an electrical signal by emitting a light beam and receiving a reflected light signal. When the object deviates in position, the change in light will be detected and converted into a position deviation signal through a signal processing circuit. After these signals undergo logical operations, a control signal is generated to drive an external actuator to perform a correction operation, thereby achieving the purpose of preventing runaway.

[0044] However, the anti-deviation principle of the above-mentioned prior art has disadvantages. Specifically, when the roll bag is being transported by a roller or other structure, or when being processed, its edge may fold, etc. Figure 2-Figure 4As shown, when the edge of the bag body 100 is partially folded, a groove 1001 and a folded portion 1002 will be formed at the folded position. On the one hand, the presence of the groove 1001 will cause the edge of the bag body 100 to be concave, thereby causing the photoelectric sensor 1 to detect a deviation in the edge position of the bag body 100, causing the external actuator to perform a deviation correction operation, causing the bag body 100 that originally had no deviation to deviate; on the other hand, when the folded portion 1002 passes through the roller, the folded portion 1002 will be squeezed by the roller and fit with the bag body 100, resulting in an increase in the thickness of the bag body 100 at this position, which will also cause the bag body 100 to deviate; therefore, in order to avoid deviation caused by the partial folding of the edge of the bag body 100, the present invention improves the existing anti-deviation mechanism, as follows:

[0045] There are two photoelectric sensors 1 in the present invention, and they are symmetrically arranged on the left and right sides of the bag body 100; the two photoelectric sensors 1 can detect the two edges of the bag body 100 at the same time. When one of the edge positions of the bag body 100 is partially folded, the photoelectric sensor 1 corresponding to the folded position will detect an abnormality, but the edge position of the bag body 100 detected by the other photoelectric sensor 1 is normal. At this time, the control module judges the signals detected by the two photoelectric sensors 1. If the signals detected by the two photoelectric sensors 1 are both abnormal, it can be determined that the bag body 100 is in a deviation state at this time, and the control module controls the external actuator to perform the correction operation; if only one of the signals detected by the two photoelectric sensors 1 is abnormal, it can be determined that the edge of the bag body 100 is partially folded at this time, the control module does not start the external actuator, and uses the flattening component described below to flatten the folded parts again.

[0046] Specifically, flattening components are symmetrically arranged on the left and right sides of the bag body 100; along the conveying direction of the bag body 100, the photoelectric sensor 1 and the flattening component are arranged in sequence, so that the photoelectric sensor 1 can first detect the edge of the bag body 100 so that the control module can determine the specific processing method.

[0047] The flattening assembly includes a U-shaped frame 2 and two inclined plates 3 arranged on the U-shaped frame 2. The two arms 21 of the U-shaped frame 2 are symmetrically arranged on the upper and lower sides of the bag body 100, and the two inclined plates 3 are symmetrically arranged on the upper and lower sides of the bag body 100. Specifically, the two inclined plates 3 are respectively arranged on the two arms 21.

[0048] The flattening assembly also includes a main pipe 9 and two branch pipes 11. A pulse valve 10 is installed on the main pipe 9. The main pipe 9 is connected to the high-pressure air source. One end of the branch pipe 11 is connected to the main pipe 9, and the air flow blown out from the other end is blown obliquely to the edge of the bag body 100; the folding portion 1002 at the edge of the bag body 100 can increase the inclination angle between the upper and lower surfaces of the bag body 100 under the action of the air flow blown out from the other end of the branch pipe 11.

[0049] The working principle of the above technical solution is: when there is partial folding at the edge of the bag body 100, the control module controls the opening of the pulse valve 10, and the high-pressure gas source is diverted to the inside of the two branch pipes 11 through the main pipe 9, and then the branch pipe 11 blows the folded part 1002 of the bag body 100. Under the action of the high-pressure airflow, the angle between the folded part 1002 and the bag body 100 gradually increases, so that the angle between the folded part 1002 and the bag body 100 can reach 120-180°. At this angle, the folded part 1002 is flattened when passing through the inclined plate 3, thereby preventing the bag body 100 from deviating; the airflow blown out by the two branch pipes 11 can act on both sides of the bag body 100 at the same time, so that the shaking of the bag body 100 can be reduced; the existence of the pulse valve 10 enables the high-pressure gas to blow the folded part 1002 in a high-frequency intermittent manner, which is more conducive to blowing up the folded part 1002.

[0050] In the above scheme, by setting two photoelectric sensors 1 to simultaneously monitor the edge positions of the bag body 100 on both sides, it is possible to avoid misjudgment caused by the folding of the edge of the bag body 100 during detection by a single photoelectric sensor 1, and to avoid the originally normal bag body 100 from deviating due to system misjudgment; then, through the set inclined plate 3 and the main pipe 9, the pulse valve 10 and the branch pipe 11, the folded part of the edge of the bag body 100 can be flattened to prevent the bag body 100 from deviating due to the existence of the folded part 1002.

[0051] Furthermore, the inclined plate 3 is connected to the U-shaped frame 2 through an elastic component, so that the inclined plate 3 and the U-shaped frame 2 are elastically and movably connected; then, a flat head 12 is fixedly connected to the other end of the branch pipe 11, and the flat airflow blown out by the flat mouth 121 of the flat head 12 is directed toward the folding portion 1002; the flat airflow part is blown toward the corresponding end of the inclined plate 3 close to the bag body 100. The working principle of the above scheme is as follows: on the one hand, the inclined plate 3 is connected to the U-shaped frame 2 through an elastic component, and on the other hand, the flat airflow part blows to the end of the inclined plate 3 close to the bag body 100 corresponding to it, and then cooperates with the pulse valve 10 so that the flat airflow can intermittently impact the end of the inclined plate 3 close to the bag body 100. On the one hand, the flat airflow is used to blow up the folded portion 1002, and on the other hand, it is used to blow the end of the inclined plate 3 close to the bag body 100, so that the end of the inclined plate 3 close to the bag body 100 is tilted outward. Due to the presence of the pulse valve 10, after the end of the inclined plate 3 close to the bag body 100 is tilted outward at a certain angle, the end of the inclined plate 3 close to the bag body 100 will return to its original position under the elastic force of the elastic component, so that the inclined plate 3 can produce continuous shaking, and the shaking is mainly located at the end of the inclined plate 3 close to the bag body 100. In this way, the folded portion 1002 originally close to the bag body 100 can be gradually lifted by this shaking, so that the angle between the folded portion 1002 and the bag body 100 gradually increases.

[0052] Furthermore, the elastic component includes a first straight spring 6 and a second straight spring 7 connected between the inclined plate 3 and the U-shaped frame 2. As they gradually approach the bag body 100, the distance between the first straight spring 6 and the second straight spring 7 and the bag body 100 gradually decreases; the first straight spring 6 and the second straight spring 7 are both connected to the inclined plate 3 through a connecting seat 32; and, a first bolt 4 and a second bolt 5 are threadedly connected to the U-shaped frame 2, one end of the first bolt 4 is rotatably connected to one end of the first straight spring 6, and one end of the second bolt 5 is rotatably connected to one end of the second straight spring 7. In this embodiment, the connection between the inclined plate 3 and the U-shaped frame 2 is achieved by two straight springs, and then combined with two bolts, so that the user can adjust the inclination angle of the inclined plate 3 according to actual conditions. For example, the second bolt 5 can be used to push the second straight spring 7 and the end of the inclined plate 3 close to the bag body 100 to gradually move toward the edge of the bag body 100, so that the inclined plate 3 tilts outward. In this case, the inclined plate 3 will also move upward a certain distance (or away from the bag body 100) under the action of the high-pressure airflow. From the overall point of view, the end of the inclined plate 3 close to the bag body 100 will also produce an action of lifting the folding portion 1002 upward during the continuous shaking process, so as to ensure the flattening effect of the folding portion 1002 to the greatest extent.

[0053] In this embodiment, a limiting rod 8 is provided on the other side of the inclined plate 3 relative to the flat mouth 121, and the top end of the limiting rod 8 is fixedly connected to the U-shaped frame 2, and the bottom end of the limiting rod 8 is bent toward the inclined plate 3 and provided with a round head 81. The setting of the limiting rod 8 and the round head 81 can limit the shaking amplitude of the inclined plate 3 to prevent the shaking amplitude of the inclined plate 3 from being too large, causing the lifted folding portion 1002 to be pushed back again (in other words, if the shaking amplitude of the inclined plate 3 is too large, it will cause the end of the inclined plate 3 close to the bag body 100 to pass over the folding portion 1002, and then cause the folding portion 1002, which was originally at an obtuse angle to the bag body 100, to be pushed back to an acute angle state by the falling inclined plate 3).

[0054] An arc bottom 31 is provided at one end of the inclined plate 3 close to the bag body 100 ; the arc bottom 31 prevents the end of the inclined plate 3 close to the bag body 100 from scratching the folded portion 1002 , thereby ensuring the integrity of the bag body 100 .

[0055] In this embodiment, the U-shaped frame 2 and the photoelectric sensor 1 are fixedly connected via a connecting frame 13 ; a mounting plate 14 is provided at the bottom of the bag body 100 , and the connecting frame 13 is provided on the mounting plate 14 .

[0056] Furthermore, two threaded sleeves 15 are rotatably connected to the mounting plate 14. Specifically, the threaded sleeve 15 can be rotatably connected to the mounting plate 14 through a bearing seat 17. The axis of the threaded sleeve 15 is parallel to the width direction of the bag body 100, and the spiral directions of the internal threads of the two threaded sleeves 15 are opposite. A threaded rod 16 is threadedly connected in each threaded sleeve 15, and the two threaded rods 16 are fixedly connected to the two connecting frames 13 respectively. Directly rotating the threaded sleeve 15 can drive the two threaded rods 16 to move closer or farther away synchronously, thereby adjusting the spacing between the two photoelectric sensors 1; a guide sleeve 19 is fixedly installed on the mounting plate 14, and a guide rod 18 is slidably passed through the guide sleeve 19. The guide rod 18 is parallel to the threaded sleeve 15, and the guide rod 18 is fixedly connected to the connecting frame 13. A baffle 20 is fixed on the end of the guide rod 18 away from the connecting frame 13; the guide rod 18 cooperates with the guide sleeve 19 to limit the threaded rod 16 and the connecting frame 13 to rotate together with the threaded sleeve 15.

[0057] The mounting plate 14 includes a support plate portion 141 and an inclined plate portion 142 fixedly connected to both ends of the support plate portion 141. One end of the inclined plate portion 142 is fixedly connected to a mounting portion 143, and a mounting hole 144 is provided on the mounting portion 143; the threaded sleeve 15 is rotatably connected to the top of the support plate portion 141, and the guide sleeve 19 is fixedly installed on the top of the support plate portion 141. In actual use, the mounting portion 143 can be installed on the support frame with appropriate bolts to fix the mounting plate 14.

[0058] A bag making machine comprises the above-mentioned roll bag anti-deviation device.

[0059] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A roll bag anti-deviation device, comprising a photoelectric sensor, characterized in that: There are two photoelectric sensors, which are symmetrically arranged on the left and right sides of the bag body; Flattening components are symmetrically arranged on the left and right sides of the bag body; The photoelectric sensor and the flattening assembly are sequentially arranged along the conveying direction of the bag body; The flattening assembly includes a U-shaped frame and two inclined plates arranged on the U-shaped frame, and the two inclined plates are symmetrically arranged on the upper and lower sides of the bag body; The flattening assembly further comprises a main pipe and two branch pipes, wherein a pulse valve is installed on the main pipe, one end of the branch pipe is connected to the main pipe, and the air flow blown out from the other end is obliquely blown to the edge of the bag body; The folded portion at the edge of the bag body can increase the inclination angle between the upper and lower surfaces of the bag body under the action of the airflow blown out from the other end of the branch pipe; The inclined plate is connected to the U-shaped frame through an elastic component; The other end of the branch pipe is fixedly connected to a flat head, and the flat airflow blown out from the flat opening of the flat head is directed toward the folded portion; The flat airflow portion blows toward the corresponding end of the inclined plate close to the bag body; A limiting rod is provided on the other side of the inclined plate relative to the flat opening, the top end of the limiting rod is fixedly connected to the U-shaped frame, and the bottom end of the limiting rod is bent toward the inclined plate and provided with a round head.

2. The roll bag anti-deviation device according to claim 1, characterized in that: The elastic component includes a first straight spring and a second straight spring connected between the inclined plate and the U-shaped frame. As they gradually approach the bag body, the distances between the first straight spring and the second straight spring and the bag body gradually decrease.

3. The roll bag anti-deviation device according to claim 2, characterized in that: A first bolt and a second bolt are threadedly connected to the U-shaped frame. One end of the first bolt is rotatably connected to one end of the first straight spring, and one end of the second bolt is rotatably connected to one end of the second straight spring.

4. The roll bag anti-deviation device according to claim 2, characterized in that: The inclined plate is provided with a curved bottom at one end close to the bag body; The first straight spring and the second straight spring are both connected to the inclined plate through a connecting seat.

5. The roll bag anti-deviation device according to claim 1, characterized in that: The U-shaped frame and the photoelectric sensor are fixedly connected via a connecting frame; A mounting plate is provided at the bottom of the bag body, and the connecting frame is provided on the mounting plate.

6. The roll bag anti-deviation device according to claim 5, characterized in that: Two threaded sleeves are rotatably connected to the mounting plate, the axes of the threaded sleeves are parallel to the width direction of the bag body, the spiral directions of the internal threads of the two threaded sleeves are opposite, and a threaded rod is threadedly connected in each threaded sleeve, and the two threaded rods are fixedly connected to the two connecting frames respectively; A guide sleeve is fixedly mounted on the mounting plate, a guide rod is slidably passed through the guide sleeve, the guide rod is parallel to the threaded sleeve, and the guide rod is fixedly connected to the connecting frame.

7. The roll bag anti-deviation device according to claim 6, characterized in that: The mounting plate includes a support plate portion and an inclined plate portion fixedly connected to both ends of the support plate portion, one end of the inclined plate portion is fixedly connected to the mounting portion, and the mounting portion is provided with a mounting hole; The threaded sleeve is rotatably connected to the top of the support plate portion, and the guide sleeve is fixedly installed on the top of the support plate portion.

8. A bag making machine, characterized in that: The bag making machine includes the roll bag anti-deviation device according to any one of claims 1 to 7.

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