Film releasing mechanism for packaging machine and packaging machine

Abstract

The utility model discloses a film releasing mechanism for a packaging machine and the packaging machine, which belong to the field of packaging equipment, and are used for solving the problem that the adjustment of an existing film material conveying angle is limited, the film releasing mechanism comprises a rack, a swing frame, an adjusting mechanism, an adjusting roller and a conveying mechanism, and the relative angle between the swing frame and the rack can be adjusted through rotation; the adjusting mechanism comprises a driving part, two groups of screw rods and two groups of moving seats, the screw rods extend along the length direction of the swing frame and are rotatably connected with the swing frame, the two screw rods are arranged in parallel and at an interval, the two moving seats are respectively connected with the two screw rods through nuts, and the driving part is in transmission connection with the screw rods and is used for controlling the two screw rods to rotate synchronously; the two ends of the adjusting roller are connected with the two movable seats correspondingly. The conveying mechanism is used for conveying film materials to the adjusting roller. According to the film releasing mechanism for the packaging machine and the packaging machine, the film material angle adjusting range can be widened, the film releasing mechanism is suitable for more use scenes, and the applicability of equipment to different film material working angles is improved.

Description

Technical Field

[0001] The utility model relates to the field of packaging equipment, and particularly relates to a film feeding mechanism for a packaging machine and a packaging machine. Background Art

[0002] The packaging machine needs to pull continuous film material from a film roll. Specifically, the film material is pulled out from the film roll by a driving roller shaft, guided by a guiding mechanism, and then enters the bag-making mechanism of the packaging machine.

[0003] In the related art, before the film material enters the bag-making mechanism, it needs to pass through the end roller of the guiding mechanism and needs to be accurately docked at a specific preset angle to ensure that the forming quality of the packaging bag meets the product requirements. The adjustment of this preset angle is crucial for adapting to different products and different packaging specifications. The existing adjustment method is mainly to rotate the mounting frame of the end roller to adjust the position and angle of the end roller. However, due to the stability of the front-end conveying of the film material and the requirement of the compactness of the internal space of the equipment, the rotation range of the mounting frame is limited, resulting in a relatively narrow adjustment range of the film material angle. This limitation greatly weakens the adaptability and flexibility of the packaging machine to different products and different packaging requirements, and it is difficult to meet the increasingly diverse market demands.

[0004] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Invention

[0005] (I) Technical Problems to be Solved

[0006] The utility model provides a film feeding mechanism for a packaging machine and a packaging machine, and at least solves the technical problem of: how to improve the angle adjustment range when the film material enters the bag-making mechanism and increase the applicability of the equipment.

[0007] (II) Technical Solutions

[0008] To solve the above technical problems, the utility model provides the following technical solutions:

[0009] A film feeding mechanism for a packaging machine, comprising:

[0010] A frame;

[0011] A swing frame, which is rotatably connected to the frame through a rotating shaft, so that the swing frame can adjust the relative angle with the frame by rotation;

[0012] Adjusting mechanism, including a driving member, and two groups of screws and moving seats. The screws extend along the length direction of the swing frame and are rotatably connected to the swing frame. The two screws are arranged in parallel and at intervals. The two moving seats are respectively connected to the two screws through nuts. The driving member is in transmission connection with the screws for controlling the synchronous rotation of the two screws;

[0013] Adjusting roller. The two ends of the adjusting roller are respectively connected to the two moving seats and can move along the axial direction of the screw under the drive of the moving seat. The adjusting roller is used for conveying the film material and guiding the film material to the bag-making mechanism;

[0014] Conveying mechanism, arranged on the frame and used for conveying the film material to the adjusting roller.

[0015] In some embodiments, the driving member includes a handwheel. A rotating shaft is provided on the handwheel. The adjusting mechanism further includes two first bevel gears fixed on the rotating shaft, and two second bevel gears respectively fixed on the two screws. Each of the two first bevel gears is connected to one of the second bevel gears.

[0016] In some embodiments, an arc hole is provided on the frame. The arc hole is centered on the rotation connection point of the swing frame and the frame. The swing frame is fixedly connected to the inner side of the arc hole through a locking bolt.

[0017] In some embodiments, a first scale indicating the rotation angle of the swing frame and / or a second scale indicating the moving distance of the moving seat are provided on the frame.

[0018] In some embodiments, the conveying mechanism includes a film inspection roller and a microswitch. An annular groove is provided on the roller surface of the film inspection roller. The microswitch is fixed relative to the frame, and the transmission element of the microswitch faces the annular groove, so that the film material can trigger the microswitch when passing through the film inspection roller, and when there is no film material passing through the film inspection roller, the annular groove gives way to the transmission element of the microswitch, so that the microswitch is in an untriggered state.

[0019] In some embodiments, the conveying mechanism includes a tensioning assembly. The tensioning assembly includes a swing rod, a swing shaft, a tensioning roller, a tensioning rotating plate, a tensioning spring and an adjusting plate; one end of the swing rod is connected to the frame through the swing shaft, and the other end is connected to the tensioning roller; the tensioning rotating plate is fixedly connected to the swing shaft, one end of the tensioning spring is connected to the tensioning rotating plate, and the other end is connected to the adjusting plate; a plurality of adjusting holes for individually connecting the tensioning spring are provided on the adjusting plate to adjust the stretching degree of the tensioning spring.

[0020] In some embodiments, the conveying mechanism includes a film winding assembly, and the film winding assembly includes a film winding drum, a pulley, a belt, an adjusting spring, and a spring adjusting rod; the film winding drum is rotatably connected to the frame and is used for sleeving a film material roll; the pulley is connected to the film winding drum; one end of the belt is connected to the pulley, and the other end is connected to the adjusting spring; the adjusting spring is connected to the tensioning rotating plate through the spring adjusting rod.

[0021] In some embodiments, there are two sets of the film winding assemblies, which are respectively located on opposite sides of the swing shaft.

[0022] The present utility model also provides a packaging machine, which includes the film feeding mechanism for the packaging machine described above.

[0023] (III) Beneficial effects

[0024] Compared with the prior art, the film feeding mechanism for the packaging machine and the packaging machine provided by the present utility model have the following beneficial effects:

[0025] When the film feeding mechanism for the packaging machine and the packaging machine work, the film material is conveyed to the adjusting roller through the conveying mechanism, and after passing through the adjusting roller, the film material enters the bag-making mechanism. The angle adjustment of the film material entering the bag-making mechanism can be adjusted in the following two ways. The first way is to rotate the swing frame to adjust the relative angle between the swing frame, the frame, and the bag-making mechanism; the second way is to adjust through the adjusting mechanism. Specifically, by controlling the synchronous rotation of the two screws by the driving member, the two moving seats move synchronously on the screws, and then drive the adjusting roller on the moving seat to move in the length direction of the swing frame to realize the angle adjustment of the film material. Among them, when the two adjustment methods are carried out simultaneously, compared with the traditional method that only relies on rotation adjustment, the range of film material angle adjustment can be improved, more usage scenarios can be adapted, and the applicability of the equipment to the working angles of different film materials can be increased. Description of the drawings

[0026] Figure 1 It is a three-dimensional view of the film feeding mechanism for the packaging machine in the embodiment.

[0027] Figure 2 It is a front view of the film feeding mechanism for the packaging machine in the embodiment.

[0028] Figure 3 It is a three-dimensional view of the adjusting mechanism in the embodiment.

[0029] Figure 4 It is a three-dimensional view of the film inspection roller and the microswitch in the embodiment.

[0030] Figure 5 It is a three-dimensional view of the tensioning assembly and the film winding assembly in the embodiment.

[0031] Reference numerals:

[0032] Frame 1, arc hole 11, locking bolt 12, first scale 13;

[0033] Swing frame 2, second scale 21;

[0034] Adjusting mechanism 3, driving part 31, screw 32, moving seat 33, first bevel gear 34, second bevel gear 35, handwheel 311, rotating shaft 312;

[0035] Adjusting roller 4;

[0036] Conveying mechanism 5, film inspection roller 51, micro switch 52, tensioning assembly 53, film winding assembly 54, driving roller 55, annular groove 510, swing rod 531, swing shaft 532, tensioning roller 533, tensioning rotating plate 534, tensioning spring 535, adjusting plate 536, film winding roller 541, pulley 542, belt 543, adjusting spring 544, spring adjusting rod 545;

[0037] Bag making mechanism 6. Detailed implementation mode

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0039] The existing method for adjusting the angle of the film material input into the bag making mechanism of the packaging machine is mainly to rotate the mounting frame of the end roller to adjust the position and angle of the end roller. However, due to the stability of the front-end conveying of the film material and the compactness requirements of the internal space of the equipment, the rotation range of the mounting frame is limited, resulting in a relatively narrow adjustment range of the film material angle.

[0040] To solve the above technical problems, this embodiment provides a film releasing mechanism for a packaging machine. Please refer to Figures 1 to 3 as shown in Figure 1 is a perspective view of the film releasing mechanism for a packaging machine in the embodiment, Figure 2 is a front view of the film releasing mechanism for a packaging machine in the embodiment, Figure 3 is a perspective view of the adjusting mechanism in the embodiment.

[0041] A film releasing mechanism for a packaging machine in this embodiment, as Figure 1 shown, includes: frame 1, swing frame 2, adjusting mechanism 3, adjusting roller 4 and conveying mechanism 5.

[0042] The frame 1 serves as the basic structure for supporting and fixing the swing frame 2, adjusting mechanism 3, adjusting roller 4 and conveying mechanism 5, and can be an integral structure or a split structure.

[0043] The swing frame 2 is used as the installation basis for the adjustment mechanism 3 and the adjustment roller 4. The swing frame 2 is rotatably connected to the frame 1 through a rotating shaft so that the relative angle of the swing frame 2 with the frame 1 can be adjusted by rotation, and the bag-making mechanism 6 is usually fixed relative to the frame 1, so that the angle of the swing frame 2 relative to the bag-making mechanism 6 can be adjusted.

[0044] Adjustment mechanism 3, such as Figure 3 As shown, it includes a driving member 31, two sets of screw rods 32 and a movable seat 33. The screw rods 32 extend along the length direction of the swing frame 2 and are rotatably connected to the swing frame 2 so that they can rotate relative to the swing frame 2. The two screw rods 32 are parallel and spaced apart. The two movable seats 33 are respectively connected to the two screw rods 32 through nuts. The driving member 31 is in transmission connection with the screw rods 32 for controlling the synchronous rotation of the two screw rods 32.

[0045] The two ends of the adjusting drum 4 are respectively connected to two moving seats 33, and can be driven by the moving seats 33 to move axially along the screw 32. Figure 2 As shown, the adjusting roller 4 is used to convey the film material and guide the film material to the bag making mechanism 6.

[0046] The conveying mechanism 5 is arranged on the frame 1 and is used to convey the film material to the adjusting roller 4. The existing conveying mechanism 5 can be used.

[0047] The film placing mechanism for the packaging machine of the above technical solution integrates two complementary adjustment mechanisms, which effectively broadens the angle adjustment range when the film material enters the bag making mechanism 6. First, by rotating the swing frame 2, the relative angle between it and the frame 1 and the bag making mechanism 6 can be quickly adjusted to preliminarily set the film material's bag entry angle. Secondly, the adjustment mechanism 3 uses the driving member 31 to control the synchronous rotation of the two parallel screws 32, driving the movable seat 33 connected thereto to move smoothly along the axial direction of the screw 32, thereby realizing the fine adjustment of the adjustment roller 4 in the length direction of the swing frame 2, and further fine-tuning the film material's bag entry angle. More importantly, when these two adjustment methods work together, not only the limitations of the traditional single rotation adjustment method in the angle adjustment range are overcome, but also the equipment's adaptability to different film material characteristics and packaging requirements is significantly enhanced. This dual-mode adjustment mechanism ensures that the film material can enter the bag making mechanism 6 at the optimal angle, improves packaging accuracy and efficiency, and reduces the scrap rate, so it is widely used in a variety of packaging scenarios, meeting the market's dual requirements for packaging equipment flexibility and efficiency.

[0048] The driving member 31 is connected to the screw rod 32 in a transmission manner to control the synchronous rotation of the two screw rods 32. Figure 3As shown, the driving member 31 includes a handwheel 311. A rotating shaft 312 is fixed on the handwheel 311. The rotating shaft 312 is rotatably connected to the swing frame 2. The adjusting mechanism 3 further includes two first bevel gears 34 fixed on the rotating shaft 312, and two second bevel gears 35 respectively fixed at the ends of the two screw rods 32. Each of the two first bevel gears 34 is connected to a second bevel gear 35. When the adjusting mechanism 3 works, the handwheel 311 controls the rotation of the rotating shaft 312, drives the two first bevel gears 34 to rotate, and further drives the two second bevel gears 35 and the screw rods 32 to rotate, so that the connecting rod moving seat 33 can move synchronously, realizing the position adjustment of the adjusting roller 4.

[0049] Exemplarily, referring to Figure 3 As shown, a handle is provided on the handwheel 311, and the handwheel 311 is driven to rotate through the handle.

[0050] In another implementation manner where the above driving member 31 is in transmission connection with the screw rods 32 to control the synchronous rotation of the two screw rods 32, the driving member 31 is a driving motor (not shown in the figure). The number of driving motors is one, and it is connected to the above rotating shaft 312 through a reducer or directly connected. The screw rods 32 are driven to rotate through the driving motor, thereby realizing automatic control.

[0051] Exemplarily, the number of driving motors is two (not shown in the figure), which respectively drive the screw rods 32 to rotate. The manner in which the driving motors drive the screw rods 32 to rotate can be an existing manner, and will not be elaborated here.

[0052] In order to be able to quickly fix the swing frame 2 on the frame 1 after the relative angle between the swing frame 2 and the frame 1 is adjusted by rotation, referring to Figure 3 As shown, an arc hole 11 is provided on the frame 1. The arc hole 11 is centered on the rotation connection point between the swing frame 2 and the frame 1. The swing frame 2 is fixedly connected to the inner side of the arc hole 11 through a locking bolt 12.

[0053] In order to conveniently display the current angle of the swing frame 2, referring to Figure 3 As shown, a first scale 13 indicating the rotation angle of the swing frame 2 is provided on the frame 1. A pointer can be provided on the swing frame 2 or the above locking bolt 12.

[0054] Meanwhile, referring to Figure 1 As shown, in order to conveniently display the current position of the adjusting roller 4, a second scale 21 indicating the moving distance of the moving seat 33 is provided on the swing frame 2, and a pointer adapted thereto is provided on the moving seat 33.

[0055] In order to timely know the usage situation of the film material during the conveying process, such as whether it has been used up, referring to Figure 1 and Figure 4 As shown, Figure 4FIG. 0 is a perspective view of the film inspection roller and the microswitch in the embodiment. The conveying mechanism 5 includes a film inspection roller 51 and a microswitch 52. An annular groove 510 is provided on the roller surface of the film inspection roller 51. The microswitch 52 is fixed relative to the frame 1, and the transmission element of the microswitch 52 is arranged facing the annular groove 510, so that when the film passes through the film inspection roller 51, the microswitch 52 can be triggered, thereby determining that there is still film being conveyed in the conveying mechanism 5. When the annular groove 510 allows the transmission element of the microswitch 52 to pass when there is no film passing through the film inspection roller 51, the microswitch 52 is in an untriggered state, and it is determined that there is no film being conveyed in the conveying mechanism 5; the microswitch 52 can be connected to a controller. The controller controls the alarm to work according to the trigger state of the microswitch 52, and controls the alarm to give an alarm when the film is used up, prompting the staff to replace the film roll.

[0056] Exemplarily, the annular groove 510 is opened in the middle of the film inspection roller 51, and the microswitch 52 is fixed on the bracket of the conveying mechanism 5.

[0057] In order to tension the film during the conveying process, refer to Figure 5 as shown in Figure 5 FIG. 10 is a perspective view of the tensioning assembly and the film winding assembly in the embodiment. The conveying mechanism 5 includes a tensioning assembly 53. The tensioning assembly 53 includes a swing rod 531, a swing shaft 532, a tensioning roller 533, a tensioning rotating plate 534, a tensioning spring 535, and an adjusting plate 536; one end of the swing rod 531 is connected to the frame 1 through the swing shaft 532, and the other end is connected to the tensioning roller 533. The tensioning roller 533 is used to contact the film and tension the film; the tensioning rotating plate 534 is fixedly connected to the swing shaft 532 and can drive the swing shaft 532 to rotate; a plurality of adjusting holes for separately connecting the tensioning spring 535 are provided on the adjusting plate 536. One end of the tensioning spring 535 is connected to the tensioning rotating plate 534, and the other end is connected to one of the adjusting holes of the adjusting plate 536, for adjusting the angle between the tensioning rotating plate 534 and the swing rod 531, and further adjusting the position of the tensioning roller 533 and its tensioning degree on the film, so as to realize the automatic deviation correction function.

[0058] Exemplarily, the tensioning spring 535 is directly hooked on the adjusting hole through a hook, or a shaft member for the hook to be hooked is installed on the adjusting hole.

[0059] In order to make the film output more stable, refer to Figure 5As shown, the conveying mechanism 5 includes a film winding assembly 54. The film winding assembly 54 includes a film winding drum 541, a pulley 542, a belt 543, an adjusting spring 544, and a spring adjusting rod 545. The film winding drum 541 is rotatably connected to the frame 1 and is used for sleeving the film roll. The pulley 542 is connected to the film winding drum 541. One end of the belt 543 is connected to the pulley 542, and the other end is connected to the adjusting spring 544. The adjusting spring 544 is connected to the spring seat on the tensioning rotating plate 534 through the spring adjusting rod 545. When the film roll rotates too fast on the film winding drum 541, the adjusting spring 544 can play a buffering role through its own deformation, making the rotation of the film winding drum 541 more stable.

[0060] Exemplarily, referring to Figure 1 and Figure 5 As shown, there are two sets of film winding assemblies 54, which are respectively located on the opposite sides of the swing shaft 532. Compared with the traditional design of a single film winding drum 541, two film winding drums 541 can hold two film rolls, and the two film rolls can improve the replacement efficiency of the film roll.

[0061] It can be understood that, referring to Figure 1 As shown, the conveying mechanism 5 further includes a driving drum 55 for driving the film to be conveyed forward. The driving drum 55 is driven to rotate by a motor, thereby driving the film to move forward.

[0062] This embodiment provides a packaging machine. Referring to Figure 1 As shown, it includes the above-mentioned film feeding mechanism for the packaging machine, and further includes a bag making mechanism 6. The bag making mechanism 6 is fixed relative to the frame 1 and is located obliquely below the adjusting drum 4. The bag making mechanism 6 can use the existing bag making mechanism 6, which will not be elaborated here.

[0063] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A film placing mechanism for a packaging machine, characterized in that: include: frame; A swing frame, the swing frame is rotatably connected to the frame via a rotating shaft, so that the swing frame can adjust its relative angle with the frame by rotation; The adjusting mechanism comprises a driving member, two sets of screw rods and a moving seat, wherein the screw rods extend along the length direction of the swing frame and are rotatably connected to the swing frame, the two screw rods are arranged in parallel and at intervals, the two moving seats are respectively connected to the two screw rods through nuts, and the driving member is drivingly connected to the screw rods to control the synchronous rotation of the two screw rods; An adjusting roller, both ends of which are connected to the two moving seats respectively, and can move along the axial direction of the screw driven by the moving seats, and the adjusting roller is used to convey the film material and guide the film material to the bag making mechanism; The conveying mechanism is arranged on the frame and is used for conveying the film material to the adjusting roller.

2. The film placing mechanism for a packaging machine according to claim 1, characterized in that: The driving member includes a hand wheel, and a rotating shaft is provided on the hand wheel. The adjusting mechanism also includes two first bevel gears fixed on the rotating shaft, and two second bevel gears respectively fixed on the two screw rods. The two first bevel gears are respectively connected to one second bevel gear.

3. The film placing mechanism for a packaging machine according to claim 1, characterized in that: The frame is provided with an arc hole, the arc hole takes the rotation connection between the swing frame and the frame as the center, and the swing frame is fixedly connected to the inner side of the arc hole through a locking bolt.

4. The film placing mechanism for a packaging machine according to claim 1, characterized in that: The frame is provided with a first scale indicating the rotation angle of the swing frame and / or a second scale indicating the moving distance of the moving seat.

5. The film placing mechanism for a packaging machine according to claim 1, characterized in that: The conveying mechanism includes a film inspection roller and a micro switch. The roller surface of the film inspection roller is provided with an annular groove. The micro switch is fixed relative to the frame, and the transmission element of the micro switch is arranged toward the annular groove, so that the micro switch can be triggered when the film material passes through the film inspection roller. When no film material passes through the film inspection roller, the annular groove gives way to the transmission element of the micro switch, so that the micro switch is in an untriggered state.

6. The film placing mechanism for a packaging machine according to claim 1, characterized in that: The conveying mechanism includes a tensioning assembly, and the tensioning assembly includes a swing rod, a swing shaft, a tensioning roller, a tensioning rotating plate, a tensioning spring and an adjusting plate; One end of the swing rod is connected to the frame through a swing shaft, and the other end is connected to the tensioning roller; The tension rotating plate is fixedly connected to the swing shaft, one end of the tension spring is connected to the tension rotating plate, and the other end is connected to the adjustment plate; The adjustment plate is provided with a plurality of adjustment holes for individually connecting the tension springs to adjust the stretching degree of the tension springs.

7. The film placing mechanism for a packaging machine according to claim 6, characterized in that: The conveying mechanism includes a film rolling assembly, and the film rolling assembly includes a film rolling roller, a pulley, a belt, an adjustment spring and a spring adjustment rod; The film rolling drum is rotatably connected to the frame and is used to sleeve the film roll; The pulley is connected to the film rolling drum; one end of the belt is connected to the pulley, and the other end is connected to the adjusting spring; The adjusting spring is connected with the tension rotating plate through a spring adjusting rod.

8. The film placing mechanism for a packaging machine according to claim 7, characterized in that: The film roll assembly is provided with two groups, and is respectively located on two opposite sides of the swing shaft.

9. A packaging machine, characterized in that: The invention comprises a film placing mechanism for a packaging machine as described in any one of claims 1 to 8.

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