Material position correcting device of packaging machine

Abstract

The utility model relates to a material position correcting device of a packaging machine, which comprises a fixed seat, a material position correcting device and a material position correcting device, the correcting assembly is composed of a driving mechanism and a material blocking assembly, the driving mechanism is installed on the fixing base, and the material blocking assembly is driven by the driving mechanism to do circular motion around the output axis of the driving mechanism in a vertical posture to achieve correcting motion of pushing and releasing the materials; the material pressing response assembly comprises a trigger rod and a response switch, the trigger rod is configured to horizontally move relative to the material blocking assembly, the response switch is installed on the fixing base, and the trigger rod forwards stretches out to avoid a trigger area of the response switch when the material blocking assembly does not press materials; the trigger rod is pushed by the material blocking assembly to move backwards to trigger the response switch when the material blocking assembly presses materials. According to the utility model, the accurate correction and monitoring of the material position can be realized, the material cutting phenomenon in the packaging process is avoided, the structure of the whole machine can be simplified, and the cost of the whole machine can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of packaging equipment technology, and in particular to a material position correction device for a packaging machine. Background Technology

[0002] Depending on the shape of the packaging material, the friction system between the material and the packaging film, and the direction and speed of the material being fed in, the position of the material entering the bag maker often deviates during actual production. If the deviation exceeds a certain range, it will affect the quality of the packaging film. In severe cases, it may even cut into the material during sealing, causing damage to the material. This not only affects packaging efficiency but also leads to waste, increases the scrap rate, and raises manufacturing costs.

[0003] To address the aforementioned issues, patent number 202323555387.0 discloses a material position correction device that can correct the front and back positions of materials on the packaging film of a bag maker and monitor misaligned materials, thereby improving packaging efficiency and yield. However, this material position correction device has a relatively complex overall structure and high equipment cost. Utility Model Content

[0004] The main technical problem solved by this utility model is to provide a material position correction device for a packaging machine that can achieve accurate correction and monitoring of material position, avoid material cutting during the packaging process, and simplify the overall machine structure, thereby reducing the overall equipment cost.

[0005] To solve the above-mentioned technical problems, the first technical solution adopted by this utility model is:

[0006] A material position correction device for a packaging machine, comprising:

[0007] The mounting bracket is installed on the packaging machine;

[0008] The correction component consists of a drive mechanism and a material stop component. The drive mechanism is mounted on a fixed base, and the material stop component is driven by the drive mechanism to perform a circular motion around the output axis of the drive mechanism in a vertical posture to realize the correction motion of pushing and releasing the material.

[0009] The material pressing response component includes a response switch and a trigger rod. The response switch is mounted on the fixed base. The trigger rod is configured to move away from the response switch when the material blocking component is not pressing material, so as to avoid the triggering area of ​​the response switch. When the material blocking component presses material, the material blocking component pushes the response switch to move in the direction of the response switch to trigger the response switch.

[0010] Furthermore, the drive mechanism includes a drive motor and a crank. The drive motor is fixed on the fixed base. The output shaft of the drive motor is fixedly connected to the driving end of the crank. The driven end of the crank is rotatably connected to a transmission shaft. The material stop assembly is fixedly connected to the front end of the transmission shaft. The transmission shaft and the output shaft of the drive motor are connected through a transmission mechanism to keep the material stop assembly in a vertical position during circumferential motion.

[0011] Furthermore, the transmission mechanism is a synchronous pulley set, which includes a main synchronous pulley, a secondary synchronous pulley, and a synchronous belt. The output shaft of the drive motor is fixedly connected to the main synchronous pulley, and the secondary synchronous pulley is fixedly connected to the tail end of the transmission shaft.

[0012] Furthermore, the drive shaft has a central through hole, and the trigger rod is installed laterally in the central through hole of the drive shaft. The axis of the trigger rod coincides with the axis of the drive shaft. A first return spring is fitted on the trigger rod. An opening for the trigger rod to pass through is correspondingly provided on the material stop assembly. When the material stop assembly is not pressing material, the front end of the trigger rod passes through the opening and extends forward. When the material stop assembly is pressing material, it pushes the trigger rod to move backward and compresses the first return spring.

[0013] Furthermore, the material blocking assembly includes a material blocking plate and a connecting plate. The material blocking plate is slidably mounted on the connecting plate in the vertical direction via a sliding pair. The connecting plate is fixedly connected to the front end of the transmission shaft. A second return spring is installed between the material blocking plate and the connecting plate. When the material blocking plate presses down on the material, the second return spring is compressed. The openings are correspondingly opened on the connecting plate and the material blocking plate. When the material blocking plate presses down on the material, it passively moves upward to push the trigger rod to move in the direction of the response switch.

[0014] Furthermore, the lower part of the trigger rod end has an upwardly inclined slope, which cooperates with the lower edge of the opening on the baffle plate to push the trigger rod to move.

[0015] Furthermore, the mounting direction of the connecting plate is parallel to the motion plane of the crank, and the connecting plate has an elongated hole extending in the vertical direction. It is connected to the mounting plate by screws, and the mounting plate is fixedly installed at the front end of the drive shaft.

[0016] Furthermore, an arc-shaped opening groove is provided on the fixed base along the movement trajectory of the trigger rod, and the response switch is installed in the arc-shaped opening groove, corresponding to the position where the material blocking assembly releases the material.

[0017] Furthermore, the fixing base consists of a first fixing plate and a second fixing plate. The first fixing plate has a cross-sectional "U"-shaped structure. The arc-shaped opening slot is set on the forward-protruding middle main plate of the first fixing plate. The two side plates of the first fixing plate are fixed to the second fixing plate by screws. The second fixing plate is fixed on the packaging machine.

[0018] In summary, the material position correction device for a packaging machine provided by this utility model has the following advantages compared with the prior art:

[0019] (1) This utility model controls the material blocking component to make a cyclic reciprocating motion above the material, so that the material is pushed in the front and back direction by the material blocking component before the packaging film is sealed, so that the position of the material is corrected and placed within the range of the standard packaging position, ensuring that the front and back positions of the material do not shift during sealing, and the spacing between the materials is equal, which greatly improves packaging efficiency and yield, and reduces manufacturing costs.

[0020] (2) By setting a pressing response component on the correction device to monitor the misalignment of the material, the material that has not been corrected will not be horizontally sealed at the sealing device, which effectively avoids the cutting of material during the packaging process, avoids damage to the material, and further improves the product yield. At the same time, it can also effectively avoid damage to the sealing device and reduce manufacturing costs.

[0021] (3) This utility model uses a drive mechanism to drive the material blocking assembly to make circular motion around the output axis of the drive mechanism in the vertical plane, thereby correcting the material position. At the same time, the material blocking assembly pushes the trigger rod to move back and forth in the horizontal direction to monitor the incorrect material position. This not only simplifies the overall structure and reduces the equipment cost, but also provides high accuracy in material pressure monitoring.

[0022] (4) Since this utility model does not use electronic devices such as position sensors to detect the position of materials, it is beneficial to reduce the equipment failure rate and increase the service life of the equipment.

[0023] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0024] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0025] In the attached diagram:

[0026] Figure 1 This is a structural diagram of the correction device of this utility model;

[0027] Figure 2 This is a frontal structural diagram of the correction device of this utility model;

[0028] Figure 3 This is a top view of the corrective device of this utility model;

[0029] Figure 4 This is a side view of the corrective device of this utility model;

[0030] Figure 5 yes Figure 1 A magnified view of part A;

[0031] Figure 6 This is a partial structural enlargement of the correction device of this utility model. Figure 1 (Unpressed);

[0032] Figure 7 This is a partial structural enlargement of the correction device of this utility model. Figure 2 (Unpressed);

[0033] Figure 8 This is a partial structural enlargement of the correction device of this utility model. Figure 2 (Pressure material);

[0034] Figure 9 This is a partial structural enlargement of the correction device of this utility model. Figure 2 (Pressure material).

[0035] In the picture:

[0036] Packaging machine 1, packaging film 2, materials 3, position correction device 4:

[0037] Fixed base 5, first fixed plate 51, second fixed plate 52, drive mechanism 6, drive motor 61, crank 62, transmission shaft 63, transmission mechanism 64, main synchronous pulley 641, auxiliary synchronous pulley 642, synchronous belt 643, support rod 65, synchronous pulley seat 66, material stop assembly 7, material stop plate 71, first plate 711, second plate 712, third plate 713, connecting plate 72, oblong mounting hole 721, sliding pair 73, linear slide rail 731, slider 732, opening 74, second return spring 75, mounting plate 76, trigger rod 8, inclined surface 81, response switch 9, arc-shaped opening slot 10.

[0038] It should be noted that the accompanying drawings and text description are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0040] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] like Figure 1 As shown, this embodiment provides a material position correction device for a packaging machine, installed on the frame of the packaging machine 1. The packaging machine 1 can be a bottom-feed paper pillow packaging machine or other types of packaging machines. The material position correction device 4 is specifically installed at the position corresponding to the bag-making machine (not shown in the figure), used to correct the front-to-back position of the material 3 after it enters the packaging film 2 of the bag-making machine, and then the sealing device (not shown in the figure) cuts and seals it. Of course, the material position correction device can also be installed before the material enters the bag-making machine, used to correct the front-to-back position of the material 3 before it enters the bag-making machine, and then feed the position-corrected material 3 into the packaging film 2.

[0043] like Figures 1 to 4 As shown, in this embodiment, the position correction device 4 is installed at the position of the bag making machine in the packaging machine as an example.

[0044] The position correction device 4 includes a fixed base 5, a correction component, and a pressing response component. The fixed base 5 is fixed on the frame of the packaging machine 1, and the specific fixing position can be selected according to the structure of the frame, as long as the correction component and the pressing response component are in the preset working area.

[0045] The straightening component is mounted on the fixed base 5, and the pressure response component is mounted on the straightening component. For example... Figure 6 and Figure 7 As shown, the straightening component is used to correct the position of material 3. Specifically, when the straightening component reaches the designated straightening height, it moves between the two materials 3 and pushes them into a standard packaging position. Figure 8 and Figure 9 As shown, the pressing response component is used to monitor whether the straightening component is pressing the material 3 due to its incorrect position. That is, the straightening component does not reach the specified straightening height position, but is pressing on the upper surface of the material 3. The pressing response component sends the pressed instruction to the PLC controller. The PLC controller controls the sealing device. When the incorrectly positioned material 3 reaches the sealing position, the sealing device does not operate to avoid damaging the material 3 and the sealing device.

[0046] Specifically, in this embodiment, the correction component consists of a drive mechanism 6 and a material stop component 7. The material stop component 7 is mounted on the drive mechanism 6, which is mounted on the fixed base 5. After installation, the material stop component 7 is positioned above the packaging film 2. Driven by the drive mechanism 6, the material stop component 7 performs a circular motion around the output axis of the drive mechanism 6 in a vertical direction perpendicular to the packaging film 2. This allows the material stop component 7 to enter the position between two materials 3 when it approaches the packaging film 2, pushing the materials 3 forward and backward, and then releasing the materials 3 away from the packaging film 2 after correction. In this way, while accurately correcting the material position, it also helps to simplify the overall machine structure and reduce equipment costs.

[0047] During the process of pushing and releasing the material 3, the material-stopping component 7 moves in the opposite direction to the material 3. The position where the material-stopping component 7 releases the material 3 is such that the material 3 is exactly within the standard position range of the packaging film 2. In this process, "front" and "back" refer to the forward and backward movement of the packaging film 2, towards the sealing device (i.e., the direction of movement). Figure 1 The direction to the right of the center is "front".

[0048] When the material stop assembly 7 approaches the packaging film 2, it is positioned in front of the material 3 behind it, between the two materials 3. It pushes the material 3 from front to back, reducing its moving speed. At this time, the circumferential speed of the material stop assembly 7 is controlled to be less than the linear speed of the material 3, which refers to the moving speed of the packaging film 2. Because the circumferential speed of the material stop assembly 7 is less than the linear speed of the material 3, the material 3's moving speed is reduced. This ensures that the material 3, initially positioned at the front during loading, is pushed to a position within the standard range of the packaging film. Then, the material stop assembly 7 quickly moves to release the material 3. After releasing the material 3, the material 3 continues to move forward with the packaging film 2 at the same speed until the sealing position. Regardless of the thickness of the material 3, the position of releasing the material 3 can be precisely controlled without affecting the packaging production cycle, further improving the packaging efficiency and yield rate of the packaging machine and ensuring packaging quality.

[0049] When two or more materials 3 are packaged in a single bag, this method can also be used to correct the misalignment of the relative positions of two or more materials 3 during movement, i.e., the misalignment of multiple materials 3. The material 3 at the front of the group will be pushed first by the baffle assembly 7 and move forward with the baffle assembly 7 at a speed slower than that of the packaging film 2. During this process, the moving speed of the material 3 at the front is the same as that of the baffle assembly 7, while the moving speed of the material 3 at the rear is still the same as that of the packaging film 2. That is, the material 3 at the rear will move forward at a speed faster than that of the material 3 at the front, and the material 3 at the rear will catch up with the material 3 at the front, thereby aligning the front ends of the two materials 3. This is equivalent to using the baffle assembly 7 to slow down the speed of the material 3 at the front. After the two materials 3 are aligned, they are lifted and released, so that the two materials 3 are simultaneously placed within the standard position range of the packaging film 2. The seal is cut at the sealing device, realizing the position correction of the materials 3 before sealing, thereby greatly improving packaging efficiency and yield, and ensuring packaging quality.

[0050] In this embodiment, the material blocking component 7 moves downward to a designated correction height position close to the packaging film 2, and is located directly in front of the material 3. The lowest pushing height of the material blocking component 7 maintains a certain distance from the packaging film 2, and does not adhere to the packaging film 2, so as to protect the packaging film 2 from the impact when the material blocking component 7 moves downward.

[0051] In this embodiment, the material pressing response component includes a trigger rod 8 and a response switch 9. The response switch 9 is mounted on the fixed base 5. The trigger rod 8 is configured to move away from the response switch 9 when the material blocking component 7 is not pressing material, in order to avoid the triggering area of ​​the response switch 9. When the material blocking component 7 presses material, it is pushed by the material blocking component 7 to move towards the response switch 9, triggering the response switch 9 and sending the pressing command to the PLC controller. The response switch 9 can be a contact switch or a photoelectric switch, etc.

[0052] In this embodiment, more preferably, the trigger rod 8 is configured to move horizontally relative to the material blocking assembly 7. When the material blocking assembly 7 is not pressing material, the trigger rod 8 extends forward (away from the direction of the response switch 9) to avoid the triggering area of ​​the response switch 9. When the material blocking assembly 7 is pressing material, the trigger rod 8 is pushed backward (towards the response switch 9) by the material blocking assembly 7 and enters the triggering area of ​​the response switch 9 located behind the trigger rod 8, triggering the response switch 9. At this time, the response switch 9 sends a pressing signal to the PLC controller, controlling that when the material 3 reaches the sealing device position, the sealing device does not operate. In this way, the pressing response assembly can prevent material that has not been corrected from being horizontally sealed at the sealing device, effectively avoiding damage to the material, improving the product yield, and also effectively avoiding damage to the sealing device, reducing manufacturing costs. Moreover, the pressing monitoring accuracy is high, and since no position sensors or other electronic devices are used to detect the material position, it helps to reduce the equipment failure rate and increase the service life of the equipment.

[0053] like Figures 1 to 5 As shown, in this embodiment, preferably, the fixing base 5 includes a first fixing plate 51 and a second fixing plate 52. The first fixing plate 51 has a cross-sectional "U"-shaped structure. During installation, the first fixing plate 51 protrudes towards the material 3. The two side plates of the first fixing plate 51 are fixed to the second fixing plate 52 by multiple screws. The second fixing plate 52 is then fixed to the frame on one side of the packaging machine 1 by screws. This facilitates the operator to replace different fixing bases 5 according to different machine models. It also helps to install the material blocking assembly 7 in a suitable correction position. This also facilitates the modification of the original packaging machine, and the modification cost is low. In this embodiment, it is further preferred that the mounting hole opened on the second fixing plate 52 is an elongated hole, which is used to further facilitate the adjustment of the installation position of the first fixing plate 51 relative to the packaging film 2, that is, to facilitate the adjustment of the installation position of the material blocking assembly 7 relative to the packaging film 2.

[0054] like Figures 1 to 5 As shown, in this embodiment, the drive mechanism 6 preferably includes a drive motor 61 and a crank 62. The drive motor 61 is preferably a servo motor, fixed to the first fixed plate 51, and further fixed to the middle main plate of the first fixed plate 51 by four support rods 65 arranged horizontally. An opening is located at the center of the middle main plate of the first fixed plate 51, and the output shaft of the drive motor 61 (not shown in the figure) extends horizontally towards the material 3 through the opening.

[0055] The output shaft of the drive motor 61 is fixedly connected to the driving end of the crank 62. The driven end of the crank 62 is rotatably connected to the transmission shaft 63. The stop assembly 7 is fixedly connected to the front end of the transmission shaft 63. The transmission shaft 63 and the output shaft of the drive motor 61 are connected through a transmission mechanism 64 to ensure that the stop assembly 7 always maintains a vertical posture during circumferential motion.

[0056] In this embodiment, a further preferred embodiment is that the transmission mechanism 64 is a synchronous pulley assembly, which includes a main synchronous pulley 641, a secondary synchronous pulley 642, and a synchronous belt 643. The output shaft of the drive motor 61 is fixedly connected to the main synchronous pulley 641, and the secondary synchronous pulley 642 is fixedly connected to the tail end of the transmission shaft 63. More preferably, the output shaft of the drive motor 61 is connected to the main synchronous pulley 641 through a coupling, and the main synchronous pulley 641 is fixed on the first fixed plate 51 through a synchronous pulley seat 66.

[0057] When the output shaft of the drive motor 61 rotates clockwise, it drives the crank 62 to rotate around the axis of the output shaft, which in turn drives the stop assembly 7 to perform circular motion in the vertical plane around the axis of the output shaft. Under the action of the main synchronous pulley 641, the driven synchronous pulley 642, and the synchronous belt 643, the main synchronous pulley 641 rotates while the driven synchronous pulley 642 performs circular motion around the axis of the output shaft through the synchronous belt 643, while the driven synchronous pulley 642 also remains stationary. This ensures that the stop assembly 7 mounted on the drive shaft 63 remains vertical while performing circular motion around the axis of the output shaft.

[0058] When crank 62 rotates one revolution, it drives the material-stopping assembly 7 to move in a circle around the output shaft's centerline. Its trajectory is a cyclical reciprocating motion: moving from the initial position towards the packaging film 2, moving in the same direction as the packaging film 2, then lifting away from the packaging film 2, and finally returning to the starting position. The standard descent height of the material-stopping assembly 7 and the horizontal distance it moves during the material-stopping process can be controlled by adjusting the center distance between the two shaft mounting holes (not shown in the figure) on the driving and driven ends of crank 62. The timing and speed of one revolution of crank 62 are matched to the conveying rhythm of each group of materials 3 on the packaging film 2. The speed of one revolution of crank 62 can be uniform or non-uniform; the speed within the fan-shaped angle of entering the material-stopping zone is less than the speed of leaving the material 3. This ensures material-stopping while allowing the material-stopping assembly 7 to quickly leave the material 3 after the material-stopping step is completed. Driven by crank 62, the material stop assembly 7 moves from the starting position to the release position in an arc. This allows the material stop assembly 7 to gradually rise as it moves forward and completely release the material 3 at the standard release position. This ensures that the material 3 is in the set standard position after correction, and the release position of the material 3 can be precisely controlled regardless of the thickness of the material 3.

[0059] like Figures 1 to 5 As shown, in this embodiment, the baffle assembly 7 includes a baffle plate 71 and a connecting plate 72. The baffle plate 71 is located above the packaging film 2 and perpendicular to the moving direction of the packaging film 2, and is used to push the material 3 directly in front of the material 3. The baffle plate 71 is slidably mounted on the connecting plate 72 via a sliding pair 73. The connecting plate 72 is fixedly connected to the drive shaft 63, so that the baffle plate 71 can slide relative to the connecting plate 72 in a direction close to or away from the packaging film 2. This allows the baffle plate 71 to automatically move upward relative to the connecting plate 72 when the material 3 is misaligned and the baffle plate 71 moves downward and hits the material 3, causing material compression, so as not to crush the material 3 below.

[0060] In this embodiment, to make the structure of the correction device more compact, it is further preferred that the mounting direction of the connecting plate 72 is parallel to the motion plane of the crank 62. The sliding pair 73 consists of a linear slide rail 731 and a slider 732. The slider 732 is fixed to the side of the baffle plate 71 by screws, and the linear slide rail 731 is fixed to the side of the connecting plate 72 by screws. The slider 732 and the linear slide rail 731 extend in a direction perpendicular to the packaging film 2. A limit block structure is provided at the bottom of the linear slide rail 731 to limit the lowest sliding position of the slider 732.

[0061] like Figure 4 , Figure 5 and Figure 6 As shown, in this embodiment, a further preferred embodiment has a central through hole (not shown in the figure). The trigger rod 8 is installed laterally in the central through hole of the drive shaft 63, and the axis of the trigger rod 8 coincides with the axis of the drive shaft 63, so that the trigger rod 8 can perform circumferential motion together with the stop assembly 7. A first return spring (not shown in the figure) is fitted on the trigger rod 8, and the stop plate 71 of the stop assembly 7 is provided with an opening 74 for the trigger rod 8 to pass through. Specifically, the stop plate 71 and the connecting plate 72 are provided with corresponding openings 74. When the baffle plate 71 is not pressing material, the front end of the trigger rod 8 extends forward (i.e., towards the material 3) through the opening 74. When the baffle plate 71 is pressing material and passively moves upward relative to the connecting plate 72 and the drive shaft 63, it pushes the trigger rod 8 backward and compresses the first return spring. After the baffle plate 71 is separated from the material 3, the trigger rod 8 moves forward under the action of the first return spring and exits through the opening 74 on the baffle plate 71 to return to its initial position. In this way, the trigger rod 8 is directly fitted inside the drive shaft 63, and the drive shaft 63 provides a guiding and supporting structure for the trigger rod 8, which simplifies the overall structure and makes the structure more compact.

[0062] In this embodiment, it is further preferred that the lower part of the front end of the trigger rod 8 has an upward inclined surface 81, which cooperates with the lower edge of the opening 74 on the baffle plate 71. When the baffle plate 71 moves upward passively, the lower edge of the opening 74 and the inclined surface 81 slide relative to each other, thereby pushing the trigger rod 8 to move backward.

[0063] In this embodiment, it is further preferred that a second return spring 75 is installed between the baffle plate 71 and the connecting plate 72. When the baffle plate 71 presses the material, the second return spring 75 is compressed. The initial length of the second return spring 75 determines the relative height position between the baffle plate 71 and the connecting plate 72, ensuring that the baffle plate 71 can reach the specified height for pushing and correcting the material. When the position of the material 3 on the packaging film 2 deviates significantly, the baffle plate 71 will hit the material 3 when it moves downward, resulting in a pressing phenomenon. At this time, when the baffle plate 71 continues to move downward with the movement of the crank 62, under the push of the material 3, the baffle plate 71 will slide upward along the linear slide rail 731. After moving a set distance to release the material 3, the baffle plate 71 returns to its initial position under the action of the second return spring 75.

[0064] In this embodiment, it is further preferred that two vertically extending elongated oval mounting holes 721 are provided on the bottom of the connecting plate 72. The two elongated oval mounting holes 721 are respectively connected to the mounting plate 76 by screws. The mounting plate 76 is fixedly installed on the front end of the drive shaft 63. The connection between the connecting plate 72 and the mounting plate 76 through the elongated oval mounting holes 721 facilitates the adjustment of the installation height of the connecting plate 72. An opening (not shown in the figure) is provided on the connecting plate 72 for the trigger rod 8 to pass through. The linear slide rail 731 in the sliding pair 73 is installed above the opening, and the elongated oval mounting holes 721 are provided on both sides of the opening.

[0065] In this embodiment, an arc-shaped opening groove 10 is provided on the middle main plate of the first fixing plate 51 of the fixing base 5 along the movement trajectory of the trigger rod 8. The response switch 9 is installed in the arc-shaped opening groove 10, and the response switch 9 is installed at the position where the baffle plate 71 releases the material 3. When the baffle plate 71 descends to the specified height (i.e., no material is pressed), the trigger rod 8 will extend forward (i.e., in the direction of the material 3) and pass through the opening 74 under the action of the first return spring. In this way, the trigger rod 8 will not trigger the response switch 9 during the movement, and the sealing device will seal normally. However, when the baffle plate 71 fails to descend to the specified height (i.e., when material is pressed), since the baffle plate 71 has not descended to the specified height, when the baffle plate 71 continues to move downward with the movement of the crank 62, under the push of the material 3, the baffle plate 71 will move along the... The linear guide rail 731 slides upwards. During this process, the trigger rod 8 does not pass through the opening 74 on the baffle plate 71, but is blocked on the back of the baffle plate 71. When the trigger rod 8 moves with the baffle plate 71 to the position of the response switch 9, the tail end of the trigger rod 8 enters the triggering area of ​​the response switch 9, thereby triggering the response switch 9. The trigger signal of the response switch 9 is transmitted to the sealing device through the PLC controller, controlling the sealing device not to operate when the group of materials 3 reaches the sealing position, neither cutting nor sealing. As the baffle plate 71 continues to move, when it is disengaged from the trigger rod 8, the trigger rod 8 returns to its initial position under the action of the second return spring 75. The response switch 9 is installed at the position where the baffle plate 71 releases the material 3, so that the trigger rod 8 triggers the response switch 9 without affecting the movement of the trigger rod 8 and the baffle assembly 7.

[0066] like Figures 1 to 5 As shown, in this embodiment, preferably, the baffle plate 71 is formed by bending a stainless steel plate multiple times. The baffle plate 71 consists of a first plate 711, a second plate 712, and a third plate 713. The first plate 711 has an inverted L-shaped structure and extends towards the material 3 in a direction perpendicular to the connecting plate 72. The vertical part of the first plate 711 is positioned directly above the packaging film 2 to push the material 3. The second plate 712 is perpendicular to the first plate 711 and parallel to the connecting plate 72. The slider 732 is installed on the back of the second plate 712, and the opening 74 is opened on the second plate 712 and located below the slider 732. The third plate 713 is perpendicular to the second plate 712 and is formed by bending the top of the second plate 712 towards the fixing seat 5. A mounting hole is provided on the third plate 713, and the top of the second return spring 75 is fixed in the mounting hole of the third plate 713 by a hook.

[0067] The method of using the above-mentioned material position correction device is as follows:

[0068] When packaging machine 1 is working, material 3 is fed to the area of ​​the position correction device by the incoming material conveyor. The materials 3 on the incoming material conveyor are spaced apart but not evenly, and the position of material 3 on the incoming material conveyor will also be slightly ahead of the standard packaging position of material 3 on the packaging film 2. In this way, when material 3 enters the area of ​​the correction device 4, the correction action of the correction device 4 can correct the position of material 3 one by one, ensuring that the position of material 3 is accurate and the spacing is uniform.

[0069] like Figure 6 and Figure 7 As shown, the drive motor 61 of the control and correction device 4 is started. The drive motor 61 controls the movement trajectory of the baffle plate 71 through the crank 62, and makes the rhythm of the cyclic reciprocating motion of the baffle plate 71 match the rhythm of the movement of the material 3 entering the packaging film 2. At the same time, through the transmission mechanism 64, the baffle plate 71 is kept in a vertical posture while making circular motion.

[0070] The baffle plate 71 moves from its initial baffle position toward the packaging film 2 until it enters the position between two materials 3 with a certain gap, that is, it enters the front of the rear material 3 (i.e., the material 3 to be corrected). This group of materials 3 moves forward with the baffle plate 71 at a slower speed than the packaging film 2. This is equivalent to the baffle plate 71 pushing the rear material 3 in the opposite direction to achieve position correction. After the material 3 reaches the standard position, the baffle plate 71 is lifted and the material 3 is completely released. That is, the position where the baffle plate 71 lifts and releases the material 3 is the standard position of the material 3, so that the material 3 is exactly in the standard position range within the packaging film 2, and the spacing between the materials 3 is the same. At the same time, this process will also align multiple materials 3 with misaligned front and rear positions at the front end, and simultaneously place them in the standard position range within the packaging film 2.

[0071] When the baffle plate 71 descends to the designated height (i.e., without material pressure), the trigger rod 8 extends forward (in the direction of material 3) and passes through the opening 74 under the action of the first return spring. This prevents the tail end of the trigger rod 8 from triggering the response switch 9 during movement. The trigger rod 8 passes smoothly through the response switch 9, and the packaging film 2 and material 3 continue to move forward at the same speed. When the packaging film 2 and material 3 move forward together to the sealing position, the sealing device cuts the sealing packaging film 2, thus completing the packaging of material 3. The corrected material 3 first reaches the longitudinal sealing device to complete the longitudinal sealing of the packaging film, and then moves further to the position of the transverse sealing device to complete the transverse cutting and sealing, ultimately completing the packaging of the material.

[0072] like Figure 8 and Figure 9As shown, when there is no gap or the gap is too large between the materials 3 on the incoming conveyor, and the baffle assembly 7 can no longer enter the position between two materials 3, the position of the materials 3 can no longer be corrected. At this time, the baffle plate 71 cannot descend to the specified height, and the baffle plate 71 will press on the materials 3. Since the baffle plate 71 is pressing on the materials 3, when the baffle plate 71 continues to move downward with the movement of the crank 62, under the push of the materials 3, the baffle plate 71 will overcome the elastic force of the second return spring 75 and slide upward along the linear slide rail 731. The second return spring 75 is compressed. During this process, the trigger rod 8 does not pass through the opening 74 on the baffle plate 71, but is blocked on the back of the baffle plate 71. The first return spring is compressed. When the trigger rod 8 moves with the baffle plate 71 to the position of the response switch 9, the tail end of the trigger rod 8 triggers the response switch 9. The trigger signal of the response switch 9 is transmitted to the sealing device through the PLC controller, controlling the sealing device not to operate when the group of materials 3 reaches the sealing position; the sealing device neither cuts nor seals. As the baffle plate 71 continues to move, when it disengages from the trigger rod 8, the trigger rod 8 returns to its initial position under the action of the first return spring. Simultaneously, the baffle plate 71 also returns to its initial position under the action of the second return spring 75.

[0073] This material position correction device controls the material blocking component 7 to reciprocate above the packaging film 2, so that the material 3 is pushed in the front and back direction by the material blocking component 7 before the packaging film 2 is sealed. By using the speed difference between the material blocking component 7 and the material 3, the position of the material 3 is corrected, and the material 3 is placed within the standard packaging range of the packaging film 2. This ensures that the front and back position of the material 3 does not shift when sealing, and that the spacing between the materials 3 is equal, which greatly improves packaging efficiency and yield, and reduces manufacturing costs.

[0074] This material position correction device, by setting a pressing response component on the correction device 4 to monitor material misalignment, prevents material 3 that has not been corrected from being horizontally sealed at the sealing device, thus effectively avoiding damage to the material and further improving the product yield. At the same time, it can also effectively avoid damage to the sealing device and reduce manufacturing costs.

[0075] The material position correction device uses the material stop assembly 7 to push the trigger rod 8 to move back and forth in the lateral direction to monitor the material position. This not only simplifies the overall structure and reduces equipment costs, but also provides high accuracy in material pressure monitoring. Furthermore, since it does not use electronic components such as position sensors, it helps to reduce the equipment failure rate and increase the service life of the equipment.

[0076] The material position correction device adopts a single crank drive mechanism, and drives the material stop assembly 7 to make circular motion around the output axis of the drive mechanism in the vertical plane through a transmission mechanism composed of synchronous belt pulleys, and always maintains a vertical posture to correct the material position, which greatly simplifies the overall structure and reduces the equipment cost.

[0077] This material position correction device can be modified on the existing packaging machine. The correction device can be installed on the packaging machine using the fixed base 5, and the modification cost is low.

[0078] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A material position correcting device of a packaging machine, characterized by, The application relates to a vertical posture material pushing and releasing correcting device for a packaging machine. The device comprises a fixing base installed on the packaging machine, a correcting assembly composed of a driving mechanism and a material blocking assembly, the driving mechanism is installed on the fixing base, the material blocking assembly is driven by the driving mechanism to make a circular motion around the output shaft center line of the driving mechanism to realize the correcting motion of pushing and releasing the material, and a material pressing response assembly comprising a response switch and a trigger rod, the response switch is installed on the fixing base, the trigger rod is configured to move in a direction away from the response switch to avoid the trigger area of the response switch when the material blocking assembly is not pressing the material, and the trigger rod is pushed by the material blocking assembly to move in the direction of the response switch to trigger the response switch when the material blocking assembly is pressing the material. The driving mechanism comprises a driving motor and a crank, the driving motor is fixed on the fixing base, the output shaft of the driving motor is fixedly connected with the driving end of the crank, the driven end of the crank is rotatably connected with a transmission shaft, the material blocking assembly is fixedly connected with the front end of the transmission shaft, and the transmission shaft is connected with the output shaft of the driving motor through a transmission mechanism to make the material blocking assembly keep a vertical posture when making the circular motion. The transmission mechanism is a synchronous pulley set, the synchronous pulley set comprises a main synchronous pulley, a secondary synchronous pulley and a synchronous belt, the output shaft of the driving motor is fixedly connected with the main synchronous pulley, and the secondary synchronous pulley is fixedly connected with the tail end of the transmission shaft.

2. The material position correction device of a packaging machine according to claim 1, characterized in that: The transmission shaft has a center through hole, the trigger rod is installed in the center through hole of the transmission shaft in the transverse direction, the shaft center line of the trigger rod is coincident with the shaft center line of the transmission shaft, a first reset spring is sleeved on the trigger rod, and an opening through which the trigger rod passes is arranged on the material blocking assembly, the front end of the trigger rod is stretched out from the opening in the forward direction when the material blocking assembly is not pressing the material, and the trigger rod is pushed to move in the backward direction by the material blocking assembly to make the first reset spring be compressed when the material blocking assembly is pressing the material.

3. The material position correction device of a packaging machine according to claim 2, characterized in that: The material blocking assembly comprises a material blocking plate and a connecting plate, the material blocking plate is slidably installed on the connecting plate in the vertical direction through a sliding pair, the connecting plate is fixedly connected with the front end of the transmission shaft, a second reset spring is arranged between the material blocking plate and the connecting plate, the second reset spring is compressed when the material blocking plate is pressing the material, the opening is arranged on the connecting plate and the material blocking plate, and the material blocking plate is passively moved upward to push the trigger rod to move in the direction of the response switch when the material blocking plate is pressing the material.

4. The material position correction device of a packaging machine according to claim 2, characterized in that: The lower part of the end of the trigger rod has an upwardly-inclined inclined surface which cooperates with the lower edge of the opening on the material blocking plate to push the trigger rod to move.

5. The material position correction device of a packaging machine according to claim 4, characterized in that: The installation direction of the connecting plate is parallel to the motion plane of the crank, the connecting plate has an elongated circular hole extending in the vertical direction, the connecting plate is connected with a mounting plate through a screw, and the mounting plate is fixedly installed on the front end of the transmission shaft.

6. The material position correction device of a packaging machine according to claim 5, characterized in that: An arc-shaped opening groove is arranged on the fixing base along the motion track of the trigger rod, the response switch is installed in the arc-shaped opening groove, and the response switch is arranged at the position where the material blocking assembly releases the material.

7. The material position correction device of a packaging machine according to claim 5, characterized in that: ​ 8. A material position correction device of a packaging machine according to any one of claims 1-7, characterized in that: ​ 9. The material position correction device of a packaging machine according to claim 8, characterized in that: The fixed seat is composed of a first fixed plate and a second fixed plate, the first fixed plate adopts a structure with a "several" shape in cross section, the arc-shaped open slot is arranged on the middle main plate of the first fixed plate protruding forward, the two side plates of the first fixed plate are fixed on the second fixed plate through screws, and the second fixed plate is fixed on the packaging machine.

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