Tension device for band saw for cutting water-cooled casing

Abstract

The utility model discloses a kind of water-cooled machine shell cutting with band saw's tensioner, it is related to cutting equipment technical field, to solve current equipment tensioning adjusting mechanism self-adapting ability is poor, difficult to maintain proper tension, easily cause the technical problem of band saw damage, including side disc, arc piece and connecting piece, the side disc is equipped with two, and two side discs are respectively installed in the both ends of portal frame, the upper side of side disc is rotatably installed with transmission wheel, and two transmission wheels are connected by band saw blade transmission between one end, the bottom of one end side disc is fixed with motor, and motor output shaft connects transmission wheel rotating shaft, the upper and lower side of arc piece is installed in side disc, the connecting piece is fixed on arc piece, and the lower side of connecting piece is equipped with rocker arm, the rocker arm bottom is fixed on collar, the rear end face of side disc is equipped with limit sleeve. The utility model has the advantages that tensioning degree is self-adaptively adjusted according to tool load intensity, avoid band saw loosening deformation, while ensuring the advantage of cutting flatness.

Description

Technical Field

[0001] This utility model relates to the field of cutting equipment technology, and more specifically, to a tensioning device for a band saw used for cutting water-cooled machine casings. Background Technology

[0002] The band saw is driven by a motor to rotate the drive wheel. The drive wheel drives the ring saw blade to rotate continuously by friction. When the workpiece to be sawed is placed below the running path of the saw blade (or a suitable position, which varies depending on the structure of the equipment), the high-speed rotating saw blade will cut into the workpiece. The sharp edge of the saw blade and continuous movement will gradually cut the workpiece into the required shape or size. Throughout the process, the tension of the saw blade and the guiding condition will affect the quality and efficiency of the sawing.

[0003] In the production of water-cooled machine casings, band saws are used for cutting the casings. Existing band saw cutting equipment requires adjustment of the overall tension of the band saw to ensure normal cutting operation. Current adjustment mechanisms typically adjust the band saw tension by pressing from the side using a tensioning wheel, and these mechanisms are generally electrically controlled, lacking effective springback space. This makes it inconvenient to automatically adjust the blade tension according to the cutting load, and it is difficult to ensure appropriate tension under different cutting conditions. Therefore, we propose a tensioning device for the band saw used in cutting water-cooled machine casings. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a tensioning device for a band saw used for cutting water-cooled machine casings, so as to solve the technical problem that the current equipment tensioning adjustment mechanism has poor self-adaptability, is difficult to maintain appropriate tension, and is prone to damage to the band saw.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a tensioning device for a band saw for cutting water-cooled machine casings, comprising a side plate, an arc-shaped component, and a connecting component. Two side plates are provided, and each side plate is installed at one end of a gantry frame. A transmission wheel is rotatably mounted on the upper side of each side plate, and the two transmission wheels are connected via a band saw blade. A motor is fixed to the bottom of one side plate, and the motor's output shaft is connected to the transmission wheel's rotating shaft. The arc-shaped component is installed on the upper and lower sides of the side plate. The connecting component is fixed to the arc-shaped component, and a rocker arm is provided on the lower side of the connecting component. The bottom of the rocker arm is fixed to a collar. A limiting sleeve is provided on the rear end face of the side plate, and a pressure box is fixed to one side of the rear end face of the side plate.

[0006] When in use, this utility model is powered by an external power source. The operator starts the device through an external control device, which activates an external air pump to introduce air into the pressure box through a side pipe. This causes the piston in the pressure box to expand outward, squeezing the rocker arm and causing the arc-shaped component to deflect. The arc-shaped component is positioned within the adjustment port, causing the inner end of the arc-shaped component to press against the band saw blade. This structure adjusts the tension of the band saw blade, ensuring its normal operation. The bidirectional internal pressure design increases friction at the wrap angle, ensuring normal transmission stability. When the connecting component drives the collar to rotate, the two collars respectively drive the two connecting ends of the spring component to deflect. At this time, the spring component rewinds along its own spiral trajectory, achieving a rebound reset through the spring steel material. This device uses air pressure for adjustment and drive, and the rebound reset of the spring component drives the reset of the pressure cylinder. When the load is large during band saw blade cutting, the pressure box provides buffering, allowing the load pressure to be transmitted to the piston through the pressure cylinder, increasing the internal gas pressure of the pressure box, achieving adaptive tension matching, maintaining appropriate tension under different cutting conditions, and ensuring cutting quality.

[0007] Preferably, an adjustment port is provided at one end of the upper and lower sides of the side plate, and a limit rod is fixed at the middle of the upper and lower sides of the side plate.

[0008] Preferably, the arc-shaped component and the collar are concentric circles, the arc-shaped component is slidably inserted into the adjustment port, and a pressure cylinder is rotatably mounted on the outer end of the arc-shaped component through a rotating shaft, the pressure cylinder being located inside the side plate corresponding to the band saw blade.

[0009] Preferably, a limiting opening is provided in the middle of the arc-shaped component, and the limiting opening is connected to the limiting rod. The arc-shaped component and the rocker arm form a sickle shape, and the collar is rotatably sleeved on the outside of the limiting sleeve.

[0010] Preferably, the inner side of the limiting sleeve is provided with a spring member, the spring member is designed in a spiral shape, and the two ends of the spring member are respectively fixed on the corresponding collar through the connecting end, the spring member is made of spring steel.

[0011] Preferably, the pressure box is arc-shaped, and a side pipe is installed through the middle of the outer side of the pressure box. Pistons are slidably installed in the openings at both ends of the pressure box, and the outer ends of the pistons are in contact with the corresponding rocker arms.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model, through the design of an arc-shaped component, activates an external air pump to introduce air into the air pressure box through a side pipe, causing the piston component of the air pressure box to expand outward. The piston component squeezes the rocker arm, causing the arc-shaped component to deflect. The arc-shaped component is positioned within the adjustment port, causing the inner end pressure cylinder of the arc-shaped component to squeeze the band saw blade. Through the above structure, the tension of the band saw blade is adjusted, ensuring the normal operation of the band saw blade. The bidirectional internal pressure structure design increases the friction at the wrap angle, ensuring normal transmission stability.

[0014] 2. This utility model also incorporates a spring component. When the connecting component drives the collar to rotate, the two collars respectively drive the two connecting ends of the spring component to deflect. At this time, the spring component rewinds along its own spiral trajectory and achieves rebound reset through the spring steel material. This device uses air pressure to complete the adjustment drive, and the rebound reset of the spring component drives the pressure cylinder to reset. When the load is large during the band saw blade cutting process, the air pressure box completes the buffering, allowing the load pressure to be transmitted to the piston component through the pressure cylinder, increasing the gas pressure inside the air pressure box, and completing the adaptive tension adaptation. This ensures that appropriate tension is maintained under different cutting conditions, thus ensuring the cutting quality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the connection structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the side plate of this utility model;

[0018] Figure 4 This is a schematic diagram of the rear view of the side disc of this utility model;

[0019] Figure 5 This is an enlarged structural schematic diagram of the present invention;

[0020] Figure 6 This is a schematic diagram of the spring component structure of this utility model;

[0021] Figure 7 This is a schematic diagram of the air pressure box structure of this utility model.

[0022] The following are the labels in the diagram: 1. Side plate; 101. Limiting rod; 102. Adjustment port; 103. Limiting sleeve; 104. Motor; 2. Transmission wheel; 201. Band saw blade; 3. Arc-shaped component; 301. Pressure cylinder; 302. Limiting port; 4. Gantry frame; 5. Connecting component; 501. Collar; 502. Rocker arm; 6. Air pressure box; 601. Side pipe; 602. Piston component; 7. Spring component; 701. Connecting end. Detailed Implementation

[0023] like Figures 1 to 4As shown, this utility model relates to a tensioning device for a band saw used for cutting water-cooled machine casings, comprising a side plate 1, an arc-shaped component 3, and a connecting component 5. Two side plates 1 are provided, and each side plate 1 is installed at one end of a gantry frame 4. A transmission wheel 2 is rotatably mounted on the upper side of each side plate 1, and the two transmission wheels 2 are connected by a band saw blade 201. A motor 104 is fixed to the bottom of one side plate 1, and the output shaft of the motor 104 is connected to the rotating shaft of the transmission wheel 2. The arc-shaped component 3 is installed on the upper and lower sides of the side plate 1. An adjustment port 102 is provided at one end of each of the upper and lower sides of the side plate 1. A limit rod 101 is fixed at the middle of each of the upper and lower sides of the side plate 1. The arc-shaped component 3 and the collar 501 are concentric circles. The arc-shaped component 3 is slidably inserted into the adjustment port 102, and a pressure cylinder 301 is rotatably mounted on the outer end of the arc-shaped component 3 via a rotating shaft. The pressure cylinder 301 is located inside the side plate 1 corresponding to the band saw blade 201. A limiting port 302 is opened in the middle of the arc-shaped part 3, and the limiting port 302 is connected to the limiting rod 101. The arc-shaped part 3 and the rocker arm 502 form a sickle shape. The collar 501 is rotated and sleeved on the outside of the limiting sleeve 103. The external air pump is started to introduce air into the air pressure box 6 through the side pipe 601, causing the piston part 602 of the air pressure box 6 to unfold outward. The piston part 602 squeezes the rocker arm 502 and drives the arc-shaped part 3 to deflect. The arc-shaped part 3 is unique in the adjustment port 102, so that the pressure cylinder 301 at the inner end of the arc-shaped part 3 squeezes the band saw blade 201. The tension adjustment of the band saw blade 201 is completed through the above structure to ensure the normal operation of the band saw blade 201. The bidirectional internal pressure structure design increases the friction of the wrap angle to ensure normal transmission stability.

[0024] like Figures 3 to 7As shown, this utility model relates to a tensioning device for a band saw used for cutting water-cooled machine casings, comprising a side plate 1, an arc-shaped component 3, and a connecting component 5. The connecting component 5 is fixed to the arc-shaped component 3, and a rocker arm 502 is provided on the lower side of the connecting component 5. The bottom of the rocker arm 502 is fixed to a collar 501. A limiting sleeve 103 is provided on the rear end face of the side plate 1, and a pressure box 6 is fixed on one side of the rear end face of the side plate 1. A spring component 7 is provided on the inner side of the limiting sleeve 103. The spring component 7 has a spiral design, and its two ends are respectively fixed to the corresponding collars 501 through connecting ends 701. The spring component 7 is made of spring steel. The pressure box 6 has an arc-shaped design, and a side pipe 601 is installed through the middle of the outer side of the pressure box 6. A movable valve is slidably installed in the openings at both ends of the pressure box 6. The piston 602 has its outer end in contact with the corresponding rocker arm 502. When the connecting piece 5 drives the collar 501 to rotate, the two collars 501 respectively drive the two connecting ends 701 of the spring 7 to deflect. At this time, the spring 7 rewinds along its own spiral trajectory and achieves springback reset through the spring steel material. This device completes the adjustment drive through air pressure. The springback reset of the spring 7 drives the pressure cylinder 301 to reset. When the load is large during the cutting process of the band saw blade 201, the air pressure box 6 completes the buffering, so that the load pressure is transmitted to the piston 602 through the pressure cylinder 301, increasing the gas pressure inside the air pressure box 6, completing the adaptive tension adaptation, and maintaining appropriate tension under different cutting conditions to ensure the cutting quality.

[0025] Working Principle: This embodiment provides a tensioning device for a band saw used for cutting water-cooled machine casings. During use, it is powered by an external power source. The operator starts the device via an external control device, activating an external air pump to introduce air into the pressure box 6 through the side pipe 601. This causes the piston 602 of the pressure box 6 to expand outwards. The piston 602 presses against the rocker arm 502, causing the arc-shaped component 3 to deflect. The arc-shaped component 3 is positioned within the adjustment port 102, causing the inner end pressure cylinder 301 of the arc-shaped component 3 to press against the band saw blade 201. As the connecting piece 5 drives the collar 501 to rotate, the two collars 501 respectively drive the two connecting ends 701 of the spring component 7 to deflect. At this time, the spring component 7 rewinds along its own spiral trajectory, achieving a springback reset through the spring steel material. This device uses air pressure for adjustment and drive, and the springback reset of the spring component 7 drives the pressure cylinder 301 to reset.

[0026] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A tensioning device for a band saw used for cutting water-cooled machine casings, comprising a side plate (1), an arc-shaped component (3), and a connecting component (5), characterized in that: There are two side plates (1), and the two side plates (1) are respectively installed at both ends of the gantry frame (4). A transmission wheel (2) is rotatably installed on the upper side of the side plate (1), and the two transmission wheels (2) are connected by a band saw blade (201). A motor (104) is fixed at the bottom of one side plate (1), and the output shaft of the motor (104) is connected to the shaft of the transmission wheel (2). The arc-shaped part (3) is installed on the upper and lower sides of the side plate (1). The connecting part (5) is fixed on the arc-shaped part (3), and a rocker arm (502) is provided on the lower side of the connecting part (5). The bottom of the rocker arm (502) is fixed on the collar (501). A limiting sleeve (103) is provided on the rear end face of the side plate (1), and a pneumatic box (6) is fixed on one side of the rear end face of the side plate (1).

2. The tensioning device for a band saw used for cutting a water-cooled machine casing according to claim 1, characterized in that: The side plate (1) has an adjustment port (102) at one end of its upper and lower sides, and a limit rod (101) is fixed at the middle of the upper and lower sides of the side plate (1).

3. The tensioning device for a band saw used for cutting water-cooled machine casings according to claim 2, characterized in that: The arc-shaped part (3) and the collar (501) are concentric circles. The arc-shaped part (3) is slidably inserted into the adjustment port (102), and the outer end of the arc-shaped part (3) is rotatably mounted with a pressure cylinder (301) through a rotating shaft. The pressure cylinder (301) is located in the side plate (1) corresponding to the band saw blade (201).

4. The tensioning device for a band saw used for cutting a water-cooled machine casing according to claim 3, characterized in that: The arc-shaped component (3) has a limiting port (302) in the middle, and the limiting port (302) is connected to the limiting rod (101). The arc-shaped component (3) and the rocker arm (502) form a sickle shape. The collar (501) is rotated and sleeved on the outside of the limiting sleeve (103).

5. The tensioning device for a band saw used for cutting a water-cooled machine casing according to claim 4, characterized in that: The inner side of the limiting sleeve (103) is provided with a spring member (7). The spring member (7) is designed in a spiral shape, and the two ends of the spring member (7) are respectively fixed on the corresponding collar (501) through the connecting end (701). The spring member (7) is made of spring steel.

6. The tensioning device for a band saw used for cutting a water-cooled machine casing according to claim 5, characterized in that: The air pressure box (6) is arc-shaped, and a side pipe (601) is installed through the middle of the outer side of the air pressure box (6). Pistons (602) are slidably installed in the openings at both ends of the air pressure box (6), and the outer end of the piston (602) is in contact with the corresponding rocker arm (502).

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