Film depositing mechanism of a multi-column packaging machine

Abstract

A kind of film unwinding mechanism of multi-column packing machine, including: swing arm, transmission system, film roll, unwinding servo motor and tension control system, swing arm and transmission system are fixed on multi-column packing machine, swing arm is located above transmission system, film roll is fixed on transmission system, transmission system is connected with unwinding servo motor, and tension control system is connected with transmission system.Tension control system includes: driving pulley, first small driven pulley, tension pulley, second small driven pulley, large driven pulley, synchronous belt and control servo motor.Compared with prior art, the utility model discloses using synchronous belt to realize transmission, can effectively reduce the problem of traditional tension control system friction noise and gear replacement frequently.

Description

Technical Field

[0001] This utility model relates to the field of packaging equipment, specifically to a film feeding mechanism for a multi-row packaging machine. Background Technology

[0002] Traditional multi-row packaging machines rely on pressure sensors to read the force exerted on the film during stretching, using this data as a reference for film feeding and unwinding. This approach suffers from several problems: inaccurate tension control: traditional pressure sensors have limited measurement accuracy and are not sensitive to minute tension changes; large tension fluctuations: traditional equipment struggles to smoothly adjust the unwinding speed when the film diameter changes; delayed response: pressure sensor signal processing is delayed, failing to respond promptly to tension changes; poor adaptability: traditional systems are ill-suited for film rolls of different specifications and materials, requiring manual parameter adjustments for rolls of different diameters, resulting in low automation.

[0003] On the other hand, traditional tension adjustment mechanisms use belt adjustment, which generates a lot of noise during the adjustment process and suffers from short service life due to repeated friction, requiring frequent replacement.

[0004] To address the aforementioned issues, we have made a series of improvements. Utility Model Content

[0005] The purpose of this invention is to provide a film feeding mechanism for a multi-row packaging machine to overcome the aforementioned shortcomings and deficiencies of the prior art.

[0006] A film feeding mechanism for a multi-row packaging machine includes: a swing arm, a transmission system, a film roll, an unwinding servo motor, and a tension control system. The swing arm and the transmission system are fixed to the multi-row packaging machine. The swing arm is positioned above the transmission system, and the film roll is fixed to the transmission system. The transmission system is connected to the unwinding servo motor. The tension control system is connected to the transmission system.

[0007] The tension control system includes: a driving pulley, a first small driven pulley, a tensioning pulley, a second small driven pulley, a large driven pulley, a synchronous belt, and a control servo motor. The driving pulley is connected to the transmission system. The driving pulley is connected to the first and second small driven pulleys via the synchronous belt. A tensioning pulley is provided between the first and second small driven pulleys. A large driven pulley is provided between the driving pulley and the first small driven pulley. The tensioning pulley and the large driven pulley are connected to the synchronous belt. The control servo motor is connected to the driving pulley.

[0008] Furthermore, the swing arm includes: a fixed plate, a first tensioning sleeve, a roller fixing shaft, an arm body, a swing arm mounting shaft, a roller, an absolute encoder, a driven gear, a driving gear, a second tensioning sleeve, a turntable, a pin, and a limiting pin. The fixed plate is fixed on the multi-row packaging machine. The arm body is connected to the swing arm mounting shaft through the first tensioning sleeve. One end of the swing arm mounting shaft is connected to the driving gear. The driving gear is connected to the driven gear. The driven gear is connected to the absolute encoder through the roller. The turntable is connected to the other end of the swing arm mounting shaft through the second tensioning sleeve. The pin is disposed on the turntable. The limiting pin is disposed on the fixed plate. The fixed plate is connected to the roller fixing shaft.

[0009] Furthermore, the transmission system includes: an air shaft, a mounting plate, a guide shaft, a linear bearing, a guide shaft fixing seat, and a film receiving platform. The mounting plate is disposed on the outer ring of the linear bearing, and the inner wall of the linear bearing is provided with a guide shaft. Guide shaft fixing seats are provided on both sides of the guide shaft, and the guide shaft fixing seats are fixed on the multi-row packaging machine. The mounting plate is provided with an air shaft, which is connected to the film roll. One end of the air shaft is connected to a large driven pulley. An unwinding servo motor is provided on the outer side of the mounting plate, and a first small driven pulley, a tensioning pulley, and a second small driven pulley are provided on the inner side of the mounting plate. The film receiving platform is connected to the mounting plate.

[0010] The beneficial effects of this utility model are:

[0011] Compared with traditional technologies, this invention uses a synchronous belt to achieve transmission, which can effectively reduce the friction noise and frequent gear replacement problems of traditional tension control systems. Attached image description:

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a diagram showing the usage state of the swing arm.

[0014] Figure 3 This is a schematic diagram of the transmission system.

[0015] Figure 4 This is a schematic diagram of the internal structure of this utility model.

[0016] Figure 5 This is a schematic diagram of the swing arm.

[0017] Figure 6 This is a schematic diagram of the side end of the swing arm.

[0018] Figure 7 This is a schematic diagram of the tension control system.

[0019] Figure 8 This is a structural schematic diagram of the tension control system from another angle.

[0020] Figure label:

[0021] The components include: swing arm 100, fixed plate 110, first tension sleeve 120, roller fixing shaft 130, arm body 140, swing arm mounting shaft 150, roller 160, absolute encoder 170, driven gear 180, driving gear 190, second tension sleeve 1100, turntable 1200, pin 1300, and limit pin 1400.

[0022] Transmission system 200, air shaft 210, mounting plate 220, guide shaft 230, linear bearing 240, guide shaft fixing seat 250 and film receiving platform 260.

[0023] The film roll is 300 and the unwinding servo motor is 400.

[0024] The tension control system 500, the driving pulley 510, the first small driven pulley 520, the tensioning pulley 530, the second small driven pulley 540, the large driven pulley 550, the synchronous belt 560, and the control servo motor 570.

[0025] Multi-row packaging machine 1. Detailed Implementation

[0026] The present invention will be further described below with reference to specific embodiments. It should be understood that the following embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0027] Example 1

[0028] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 2 This is a diagram showing the usage state of the swing arm. Figure 3 This is a schematic diagram of the transmission system. Figure 4 This is a schematic diagram of the internal structure of this utility model. Figure 5 This is a schematic diagram of the swing arm. Figure 6 This is a schematic diagram of the side end of the swing arm. Figure 7 This is a schematic diagram of the tension control system. Figure 8 This is a structural schematic diagram of the tension control system from another angle.

[0029] like Figure 1-8 As shown, a film feeding mechanism for a multi-row packaging machine includes: a swing arm 100, a transmission system 200, a film roll 300, an unwinding servo motor 400, and a tension control system 500. The swing arm 100 and the transmission system 200 are fixed to the multi-row packaging machine 1. The swing arm 100 is positioned above the transmission system 200, and the film roll 300 is fixed to the transmission system 200. The transmission system 200 is connected to the unwinding servo motor 400. The tension control system 500 is connected to the transmission system 200.

[0030] The tension control system 500 includes: a driving pulley 510, a first small driven pulley 520, a tensioning pulley 530, a second small driven pulley 540, a large driven pulley 550, a synchronous belt 560, and a control servo motor 570. The driving pulley 510 is connected to the transmission system 200. The driving pulley 510 is connected to the first small driven pulley 520 and the second small driven pulley 540 via the synchronous belt 560. A tensioning pulley 530 is provided between the first small driven pulley 520 and the second small driven pulley 540. A large driven pulley 550 is provided between the driving pulley 510 and the first small driven pulley 520. The tensioning pulley 530 and the large driven pulley 550 are connected to the synchronous belt 560. The control servo motor 570 is connected to the driving pulley 510.

[0031] The swing arm 100 includes: a fixed plate 110, a first tension sleeve 120, a roller fixing shaft 130, an arm body 140, a swing arm mounting shaft 150, a roller 160, an absolute encoder 170, a driven gear 180, a driving gear 190, a second tension sleeve 1100, a turntable 1200, a pin 1300, and a limit pin 1400. The fixed plate 110 is fixed to the multi-row packaging machine 1, and the arm body 140 is connected to the swing arm mounting shaft 150 through the first tension sleeve 120. Next, one end of the swing arm mounting shaft 150 is connected to the drive gear 190, the drive gear 190 is connected to the driven gear 180, the driven gear 180 is connected to the absolute encoder 170 through the roller 160, the turntable 1200 is connected to the other end of the swing arm mounting shaft 150 through the second tension sleeve 1100, the pin 1300 is set on the turntable 1200, the limit pin 1400 is set on the fixed plate 110, and the fixed plate 110 is connected to the roller fixed shaft 130.

[0032] The transmission system 200 includes: an air shaft 210, a mounting plate 220, a guide shaft 230, a linear bearing 240, a guide shaft fixing seat 250, and a film receiving platform 260. The mounting plate 220 is disposed on the outer ring of the linear bearing 240. The inner wall of the linear bearing 240 is provided with the guide shaft 230. The guide shaft fixing seats 250 are provided on both sides of the guide shaft 230. The guide shaft fixing seats 250 are fixed on the multi-row packaging machine 1. The air shaft 210 is provided on the mounting plate 220. The air shaft 210 is connected to the film roll 300. One end of the air shaft 210 is connected to the large driven pulley 550. The outer side of the mounting plate 220 is provided with an unwinding servo motor 400. The inner side of the mounting plate 220 is provided with a first small driven pulley 520, a tension pulley 530, and a second small driven pulley 540. The film receiving platform 260 is connected to the mounting plate 220.

[0033] like Figure 2As shown, the film unwinding principle is as follows: When the film roll 300 is subjected to a forward traction force, the swing arm 100 swings upward, simultaneously driving the drive gear 190 to rotate. This further causes the driven gear 180 to mesh, which in turn causes the absolute encoder 170 to rotate. After reading the position value, the absolute encoder 170 drives the unwinding servo motor 400 to unwind the film. If the swing arm is at its highest or lowest point, unwinding stops. Unwinding is only driven between the lowest and highest points. During film unwinding, the film roll diameter is also analyzed based on the swing angle of the swing arm. If the film roll diameter is large, the unwinding speed is slower; if the roll diameter is small, the unwinding speed is faster. (If the roll diameter is large and the unwinding speed is too fast, the swing arm will descend rapidly, causing the film roll tension to suddenly become too loose. Therefore, in order for the swing arm to swing slowly up and down within the range, the unwinding speed needs to be controlled by the swing arm angle to ensure the tension stability of the film roll.)

[0034] Drive Principle: The membrane roll rests on the guide shaft 230, linear bearing 240, and film receiving platform 260 of the transmission system 200. The unwinding servo motor 400 drives the linear bearing 240, which in turn moves the membrane roll along the guide shaft 230, performing unwinding and rewinding. Then, the tension control system 500, based on information from the absolute encoder 170, performs detailed adjustments, controlling the servo motor 570 to drive the drive pulley 510. The drive pulley 510, through the synchronous belt 560, drives the first small driven pulley 520 and the second small driven pulley 540, ensuring the synchronous belt maintains movement in the synchronized motion of the three pulleys. Simultaneously, the synchronous belt 560 drives the tension pulley 530 and the large driven pulley 550, which in turn drives the air shaft 210 to control the film on the membrane roll 300, thus achieving tension control.

[0035] Compared with traditional technologies, this invention uses a synchronous belt to achieve transmission, which can effectively reduce the friction noise and frequent gear replacement problems of traditional tension control systems.

[0036] The specific embodiments of this utility model have been described above, but this utility model is not limited thereto. Various changes can be made to this utility model as long as they do not depart from its spirit.

Claims

1. A film feeding mechanism for a multi-row packaging machine, characterized in that, include: The package includes a swing arm (100), a transmission system (200), a film roll (300), an unwinding servo motor (400), and a tension control system (500). The swing arm (100) and the transmission system (200) are fixed on the multi-row packaging machine (1). The swing arm (100) is located above the transmission system (200). The film roll (300) is fixed on the transmission system (200). The transmission system (200) is connected to the unwinding servo motor (400). The tension control system (500) is connected to the transmission system (200). The tension control system (500) includes: a driving pulley (510), a first small driven pulley (520), a tensioning pulley (530), a second small driven pulley (540), a large driven pulley (550), a synchronous belt (560), and a control servo motor (570). The driving pulley (510) is connected to the transmission system (200), and the driving pulley (510) is connected to the first small driven pulley (520) via the synchronous belt (560). The first small driven pulley (520) is connected to the second small driven pulley (540). A tension pulley (530) is provided between the first small driven pulley (520) and the second small driven pulley (540). A large driven pulley (550) is provided between the driving pulley (510) and the first small driven pulley (520). The tension pulley (530) and the large driven pulley (550) are connected to the synchronous belt (560). The control servo motor (570) is connected to the driving pulley (510).

2. The film feeding mechanism of a multi-row packaging machine according to claim 1, characterized in that, The swing arm (100) includes: a fixed plate (110), a first tension sleeve (120), a roller fixing shaft (130), an arm body (140), a swing arm mounting shaft (150), a roller (160), an absolute encoder (170), a driven gear (180), a driving gear (190), a second tension sleeve (1100), a turntable (1200), a pin (1300), and a limit pin (1400). The fixed plate (110) is fixed to the multi-row packaging machine (1), and the arm body (140) is connected to the swing arm mounting shaft (150) through the first tension sleeve (120). One end of the swing arm mounting shaft (150) is connected to the drive gear (190), the drive gear (190) is connected to the driven gear (180), the driven gear (180) is connected to the absolute encoder (170) through the roller (160), the turntable (1200) is connected to the other end of the swing arm mounting shaft (150) through the second tension sleeve (1100), the pin (1300) is set on the turntable (1200), the limit pin (1400) is set on the fixed plate (110), and the fixed plate (110) is connected to the roller fixing shaft (130).

3. The film feeding mechanism of a multi-row packaging machine according to claim 1, characterized in that, The transmission system (200) includes: an air shaft (210), a mounting plate (220), a guide shaft (230), a linear bearing (240), a guide shaft fixing seat (250), and a film receiving platform (260). The mounting plate (220) is disposed on the outer ring of the linear bearing (240). The inner wall of the linear bearing (240) is provided with the guide shaft (230). Guide shaft fixing seats (250) are provided on both sides of the guide shaft (230). The guide shaft fixing seats (250) are fixed on the multi-row packaging machine (1). The mounting plate (220) is provided with an air shaft (210), which is connected to the film roll (300). One end of the air shaft (210) is connected to a large driven pulley (550). The outer side of the mounting plate (220) is provided with an unwinding servo motor (400), and the inner side of the mounting plate (220) is provided with a first small driven pulley (520), a tension pulley (530), and a second small driven pulley (540). The film receiving platform (260) is connected to the mounting plate (220).

Images