Tensioning device of transmission toothed belt wheel assembly of carton packaging machine

Abstract

The tensioning device of the transmission tooth-shaped belt wheel assembly of the barrel packaging machine comprises a belt wheel installation arm, a fastening screw, a support, an adjusting bolt and a locking nut, the belt wheel assembly is installed on the tensioning device of the transmission tooth-shaped belt wheel assembly of the barrel packaging machine, the support comprises a bottom plate and a side arm, the side arm is fixed on the bottom plate, and the adjusting bolt is fixed on the side arm. A plurality of adjusting holes are formed in the length direction of the side arm; a bolt hole is formed in the bottom plate; a shaft hole is formed in the upper part of the belt wheel mounting arm, an adjusting hole is formed in the belt wheel mounting arm right below the shaft hole, and the adjusting hole is a strip-shaped hole; the adjusting bolt penetrates through the bolt hole in the bottom plate, the lower end of the belt wheel installation arm is fixed to the longitudinal direction of the support through the locking nut, at least two fastening screws penetrate through the adjusting groove of the belt wheel installation arm and are fixed to the at least two adjusting holes of the side arm, and the belt wheel assembly is fixed to the shaft hole of the belt wheel installation arm through the locking screw.

Description

Technical Field

[0001] This utility model relates to tensioning devices, and in particular to a tensioning device for a transmission toothed belt pulley assembly of a carton packaging machine. Background Technology

[0002] During production, the smooth operation of the toothed belt in the cigarette pack input drive ensures the synchronous conveying of the cigarette packs in the upper and lower transport channels. The tension of the toothed belt in the cigarette pack input drive should be maintained at 155 Hz. However, in actual production, due to the long length of the cigarette pack conveyor belt, the toothed belt in the cigarette pack input drive experiences a large load when driving the conveyor belt. As the operating time increases, the tension arm of the tensioning pulley loosens, causing the toothed belt in the cigarette pack input drive to be unable to maintain the tension frequency required for operation. Consequently, the toothed belt in the cigarette pack input drive slips and skips teeth on the pulley, accelerating the wear of the toothed belt in the cigarette pack input drive. However, since its operation, the toothed belt of the cigarette pack input drive has had a service life of only 2 weeks, requiring frequent replacement to ensure the normal operation of the equipment. This leads to a waste of spare parts, and replacing the toothed belt is also quite troublesome. It takes 20 minutes to replace or repair the toothed belt, requiring two people to work together. One person uses a pry bar to lift the tensioning arm to tighten the toothed belt, while the other person tightens the locking bolt of the tensioning arm. However, using a pry bar to tighten the toothed belt cannot control the tension of the belt. Excessive tension will cause the toothed belt to wear more quickly, while insufficient tension will cause the belt to slip.

[0003] Slippage and slack in the toothed belt of the cigarette pack input drive affect the synchronous conveying of the cigarette pack conveyor belt, causing the cigarette packs to be conveyed at varying speeds. This leads to cigarette packs getting stuck in the next process, resulting in a higher scrap rate. Repairing these malfunctions causes significant time loss, impacting production efficiency. If not detected in time, defective products entering the market will damage the company's image. Therefore, to reduce material and time consumption and improve product quality and equipment efficiency, there is an urgent need to design a tensioning device for the toothed belt of the cigarette pack input drive in the ZB48A carton packaging machine. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing tensioning devices by providing a tensioning device for the transmission toothed belt pulley assembly of a carton packaging machine.

[0005] To achieve the objective of this invention, the following technical solution is adopted:

[0006] This utility model discloses a tensioning device for a transmission toothed pulley assembly of a carton packaging machine. It includes: a pulley mounting arm, fastening screws, a bracket, adjusting bolts, and a locking nut. The pulley assembly is mounted on the tensioning device of the transmission toothed pulley assembly of the carton packaging machine. The bracket includes a base plate and a side arm. The side arm is fixed to the base plate and has several adjusting holes along its length. A bolt hole is formed in the base plate. A shaft hole is formed at the upper part of the pulley mounting arm, and an adjusting hole (strip-shaped) is formed directly below the shaft hole. The adjusting bolt passes through the bolt hole in the base plate and, through the locking nut, fixes the lower end of the pulley mounting arm to the longitudinal direction of the bracket. At least two fastening screws pass through the adjusting grooves of the pulley mounting arm and are fixed to at least two adjusting holes in the side arm. The pulley assembly is fixed to the shaft hole of the pulley mounting arm by the locking screws.

[0007] This utility model discloses a tensioning device for a transmission toothed pulley assembly of a carton packaging machine, wherein: the pulley assembly includes: a pulley, bearings, snap rings, spacers, bolts, and a pulley shaft. The pulley shaft passes through the pulley, and one end of it is fixed to the shaft hole of the pulley mounting arm by a locking screw. Two bearings, two snap rings, and a spacer are installed in the space between the pulley shaft and the pulley. The spacer is fitted onto the pulley shaft. Snap rings are installed on the pulley shaft at both ends of the spacer. A bearing is installed in the space on both sides of the snap rings. The outer ring of the bearing is tightly fitted with the pulley, and the inner ring of the bearing is tightly fitted with the pulley shaft. The other end of the pulley shaft is fixed to the inner ring of the corresponding bearing by bolts.

[0008] The present invention relates to a tensioning device for a transmission toothed pulley assembly of a carton packaging machine, wherein the pulley assembly further includes a washer, which is installed between the bearing and the bolt on the outer side of the pulley.

[0009] The present invention relates to a tensioning device for a transmission toothed belt pulley assembly of a carton packaging machine, wherein a slot is further provided on the base plate.

[0010] This utility model discloses a tensioning device for a toothed belt pulley assembly in a carton packaging machine. It effectively avoids the problems of easy wear and frequent cigarette clamping caused by insufficient tension of the toothed belt, significantly reduces the frequency of spare parts replacement and equipment downtime, avoids quality defects, improves product quality stability, reduces the labor intensity of operators, and has a simple structure, low cost, and is easy to use.

[0011] The tensioning device of the transmission toothed belt pulley assembly of the present invention for a carton packaging machine solves the following problems of the prior art:

[0012] 1. In actual production, due to the large load on the tobacco pack conveyor belt, the original tensioning arm loosens after a period of use and cannot maintain the tension of the toothed belt. As a result, the toothed belt of the tobacco pack input drive skips teeth and slips on the pulley, which causes the toothed belt of the tobacco pack input drive to wear more quickly and deform and fail.

[0013] 2. Replacing or repairing the toothed belt of the cigarette pack input drive takes 20 minutes. Two people work together: one person uses a pry bar to lift the tensioning arm to tighten the toothed belt of the cigarette pack input drive, and the other person tightens the locking bolt of the tensioning arm. However, using a pry bar to tighten the toothed belt cannot control the tension of the belt. Too tight will cause the toothed belt to wear more quickly, and insufficient tension will cause the belt to slip.

[0014] 3. This design enables adjustment of the toothed belt tensioner and provides a self-locking function to prevent the tensioner from loosening. It is easy for one person to maintain and operate, extends the service life of spare parts, avoids defective products, and improves the production efficiency of the equipment. Attached Figure Description

[0015] Figure 1 This is a front cross-sectional schematic diagram of the tensioning device of the transmission toothed belt pulley assembly of the carton packaging machine of this utility model;

[0016] Figure 2 A side view of the pulley mounting arm;

[0017] Figure 3 This is a side view of the support.

[0018] exist Figures 1 to 3 In the diagram, number 1 represents the pulley; number 2 represents the bearing; number 3 represents the snap ring; number 4 represents the spacer; number 5 represents the bolt; number 6 represents the washer; number 7 represents the pulley shaft; number 8 represents the locking screw; number 9 represents the pulley mounting arm; number 10 represents the fastening screw; number 11 represents the bracket; number 12 represents the adjusting bolt; number 13 represents the lock nut; number 14 represents the adjusting hole; number 15 represents the shaft hole; number 16 represents the adjusting groove; number 17 represents the pulley assembly; number 18 represents the bolt hole; number 19 represents the side arm; number 20 represents the base plate; and number 21 represents the retaining groove. Detailed Implementation

[0019] like Figures 1 to 3As shown, the tensioning device of the transmission toothed pulley assembly of the carton packaging machine of this utility model includes: pulley mounting arm 9, fastening screw 10, bracket 11, adjusting bolt 12 and locking nut 13. The pulley assembly 17 is mounted on the tensioning device of the transmission toothed pulley assembly of the carton packaging machine. The bracket 11 includes: base plate 20 and side arm 19. The side arm 19 is fixed on the base plate 20. Several adjusting holes 14 are opened in the length direction of the side arm 19. A bolt hole 18 is opened on the base plate 20. A slot 21 is also opened on the base plate 20. The upper part of the pulley mounting arm 9 has a shaft hole 15, and the pulley mounting arm 9 directly below the shaft hole 15 has an adjustment hole 16, which is a strip-shaped hole; the adjustment bolt 12 passes through the bolt hole 18 on the base plate 20 and is fixed to the lower end of the pulley mounting arm 9 in the longitudinal direction of the bracket 11 by the locking nut 13; at least two fastening screws 10 pass through the adjustment groove 16 of the pulley mounting arm 9 and are fixed on at least two adjustment holes 14 of the side arm 19; the pulley assembly 17 is fixed to the shaft hole 15 of the pulley mounting arm 9 by the locking screw 8.

[0020] The pulley assembly 17 includes: a pulley 1, bearings 2, snap rings 3, spacers 4, bolts 5, washers 6, and a pulley shaft 7. The pulley shaft 7 passes through the pulley 1, and one end of it is fixed to the shaft hole 15 of the pulley mounting arm 9 by a locking screw 8. Two bearings 2, two snap rings 3, and a spacer 4 are installed in the space between the pulley shaft 7 and the pulley 1. The spacer 4 is installed on the pulley shaft 7. Snap rings 3 are installed on the pulley shaft 7 at both ends of the spacer 4. A bearing 2 is installed in the space on both sides of the snap ring 3. The outer ring of the bearing 2 is tightly fitted with the pulley 1, and the inner ring of the bearing 2 is tightly fitted with the pulley shaft 7. A washer 6 is installed between the bearing 2 and the bolt 5 on the outer side of the pulley 1. The other end of the pulley shaft 7 is fixed to the inner ring of the corresponding bearing 2 by a bolt 5.

[0021] The working process of the tensioning device of the transmission toothed belt pulley assembly of the carton packaging machine of this utility model:

[0022] First, after fixing the entire device onto the equipment wall panel via the slot 21 of the bracket 11, loosen the two locking screws 10 of the pulley mounting arm 9, correctly install the transmission toothed belt, and then tighten the adjusting bolt 12 with a 13mm open-end wrench. This will cause the pulley mounting arm 9 to slide upward while tensioning the transmission toothed belt. Once the belt is tensioned to the correct position, tighten the locking nut 13, and then tighten the two locking screws 10 of the pulley mounting arm 9 to complete the adjustment of the tensioning device.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tensioning device for a transmission toothed belt pulley assembly of a carton packaging machine, comprising: The pulley mounting arm (9), fastening screw (10), bracket (11), adjusting bolt (12), and locking nut (13) are mounted on the tensioning device of the transmission toothed pulley assembly of the carton packaging machine. The bracket (11) comprises a base plate (20) and a side arm (19), the side arm (19) being fixed to the base plate (20), and having several adjusting holes (14) along its length; a bolt hole (18) is provided on the base plate (20); a shaft hole (15) is provided at the upper part of the pulley mounting arm (9), and a bolt hole (18) is provided in the aforementioned shaft hole. (15) The pulley mounting arm (9) directly below has an adjustment hole (16), which is a strip-shaped hole; the adjustment bolt (12) passes through the bolt hole (18) on the base plate (20) and the lower end of the pulley mounting arm (9) is fixed to the longitudinal direction of the bracket (11) by the locking nut (13); at least two fastening screws (10) pass through the adjustment groove (16) of the pulley mounting arm (9) and are fixed on at least two adjustment holes (14) of the side arm (19); the pulley assembly (17) is fixed on the shaft hole (15) of the pulley mounting arm (9) by the locking screw (8).

2. The tensioning device of the transmission toothed belt pulley assembly of the carton packaging machine as described in claim 1, characterized in that: The pulley assembly (17) includes: pulley (1), bearing (2), snap ring (3), spacer (4), bolt (5) and pulley shaft (7). The pulley shaft (7) passes through the pulley (1), and one end of it is fixed to the shaft hole (15) of the pulley mounting arm (9) by a locking screw (8). Two bearings (2), two snap rings (3) and a spacer (4) are installed in the space between the pulley shaft (7) and the pulley (1). The spacer (4) is installed on the pulley shaft (7). Snap rings (3) are installed on the pulley shaft (7) at both ends of the spacer (4). A bearing (2) is installed in the space on both sides of the snap ring (3). The outer ring of the bearing (2) is tightly fitted with the pulley (1), and the inner ring of the bearing (2) is tightly fitted with the pulley shaft (7). The other end of the pulley shaft (7) is fixed to the inner ring of the corresponding bearing (2) by a bolt (5).

3. The tensioning device of the transmission toothed belt pulley assembly of the carton packaging machine as described in claim 2, characterized in that: The pulley assembly (17) further includes a washer (6), which is installed between the bearing (2) and the bolt (5) on the outer side of the pulley (1).

4. The tensioning device of the transmission toothed belt pulley assembly of the carton packaging machine as described in claim 3, characterized in that: A slot (21) is also provided on the base plate (20).

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