A bread brick cutting device

Abstract

The utility model relates to cutting device technical field especially, it relates to a bread brick cutting device. The current widely used handheld toothless saw carries out the cutting mode to bread brick, and there are multiple malpractices such as high labor intensity, angle control is not accurate, cutting precision is poor, safety is low, quality is unstable etc. Including bottom plate, the trapezoidal block is connected with the sliding on the bottom plate upper surface limit, the two L shape limit blocks are rotatably connected through the pivot on the bottom plate upper surface and located trapezoidal block left and right sides, the end close to trapezoidal block of L shape limit block is equipped with the gap, the gap is rotatably connected with the runner, the middle position of the base of trapezoidal block is rotatably connected with the jack screw. The device realizes the accurate adaptation of bread brick cutting angle and thickness through the cooperation of threaded cylinder, threaded rod and bearing support rotating rod, and the mechanical locking mechanism composed of trapezoidal block and L shape limit block, ensures firm locking after angle adjustment.

Description

Technical Field

[0001] This utility model relates to the field of cutting device technology, and in particular to a bread brick cutting device. Background Technology

[0002] In existing technologies, the cutting of paving bricks (also known as permeable bricks or paving bricks) generally relies on handheld toothed saws (i.e., handheld angle grinders or small stone cutting machines) for on-site processing. Although this traditional cutting method has low equipment costs and flexible operation, it has many significant drawbacks in practical applications, especially in scenarios with long-term operation and high precision requirements.

[0003] Because handheld toothed saws rely entirely on manual operation, operators must grip the equipment tightly with both hands and continuously apply downward pressure during the cutting process to ensure that the saw blade makes full contact with the brick. At the same time, they must also control the equipment to move smoothly along the predetermined path. Especially in large-volume cutting tasks, operators need to maintain a bent-over, squatting, or standing posture for a long time to perform high-intensity operations, which can easily lead to muscle strain in the arms, waist, and neck and shoulders, and even occupational injuries.

[0004] When paving bricks need to be beveled, chamfered, or spliced ​​at specific angles (such as 45°, 30°, etc.) in engineering projects, existing handheld equipment lacks reliable angle positioning and guiding mechanisms. Operators usually rely solely on visual observation or simple rulers to judge the cutting direction and angle based on personal experience. This method is highly subjective and uncertain. Handheld cutting cannot achieve repeatable high-precision operations. Even if the same worker cuts multiple times under the same conditions, it is difficult to guarantee that the angle and depth are completely consistent each time. Modern engineering construction often requires a large number of irregularly shaped bricks of the same specifications. If standardized batch cutting cannot be achieved, it will seriously restrict the construction progress and quality control. The currently widely used handheld toothed saw for cutting paving bricks has multiple drawbacks, such as high labor intensity, inaccurate angle control, poor cutting accuracy, low safety, and unstable quality. It is difficult to meet the requirements of modern engineering construction for efficient, precise, safe, and standardized construction. Utility Model Content

[0005] (1) Technical problems to be solved: In order to overcome the shortcomings of existing bread brick cutting devices, such as high labor intensity, inaccurate angle control, poor cutting precision, low safety, and unstable quality, this utility model aims to provide a bread brick cutting device.

[0006] (2) Technical solution: To solve the above-mentioned technical problems, this utility model provides a bread brick cutting device, including a base plate. A trapezoidal block is slidably connected to the upper surface of the base plate. Two L-shaped limiting blocks are rotatably connected to the upper surface of the base plate and on the left and right sides of the trapezoidal block via a rotating shaft. A notch is opened at one end of the L-shaped limiting block near the trapezoidal block, and a rotating wheel is rotatably connected inside the notch. A tightening screw is rotatably connected at the middle position of the bottom edge of the trapezoidal block, and a rotating ring is fixedly connected to the end of the tightening screw inside the trapezoidal block.

[0007] Preferably, a through hole is provided in the middle of the base plate, a rotating rod is rotatably connected in the through hole, a fixing plate is fixedly connected to the bottom end of the rotating rod, a motor is fixedly connected to the side of the end of the fixing plate, and a cutting saw blade is fixedly connected to the output shaft of the motor.

[0008] Preferably, a housing is fixedly connected to the upper surface of the base plate, and a circular hole is provided on the upper surface of the housing. A bearing is fixedly connected to the outer side of the rotating rod, and a limit ring is fixedly connected to the outer side of the bearing. The limit ring is rotatably connected to the circular hole of the housing. The tightening screw is threadedly connected to the housing. Nine angle marker balls are set at 90° on the upper end face of the bearing. An angle indicator is set at the position corresponding to one of the angle marker balls on the housing.

[0009] Preferably, limit strips are fixedly connected to both sides of the base plate, and a concave frame is slidably connected to the outer side of the limit strips.

[0010] Preferably, two threaded rods are symmetrically fixedly connected to the lower surface of the concave frame, and a threaded cylinder is rotatably connected to the bottom end of the threaded rods.

[0011] Preferably, the other end of the L-shaped limiting block is provided with an arc-shaped groove corresponding to the rotating rod, and the end of the trapezoidal block near the rotating rod is provided with an arc-shaped groove corresponding to the rotating rod.

[0012] (3) Beneficial effects: 1. This device achieves precise adaptation of the cutting angle and thickness of paving bricks through the cooperation of threaded cylinder and threaded rod and bearing-supported rotating rod. Combined with the mechanical locking mechanism composed of trapezoidal block and L-shaped limit block, it ensures that the angle is firmly locked after adjustment, avoiding the problems of traditional hand cutting that rely on experience, large angle deviation, and easy loosening, and significantly improving cutting consistency and paving quality. 2. This device adopts a push-pull feed cutting method, which greatly reduces labor intensity. The water tank and water pump cool the saw blade and suppress dust during the cutting process, effectively protecting the health of operators. At the same time, the bread bricks are fixed and clamped, ensuring stable equipment operation and significantly improving construction safety and overall work efficiency. 3. This device uses the cooperation of angle marker balls, angle indicators, and rotating rods to cut at the required angle. By holding the top of the rotating rod and rotating it at a certain angle, the angle indicator points to the corresponding angle marker ball. This angle is adjusted according to the actual paving requirements of the paving bricks, thus avoiding problems such as inaccurate angle control and poor cutting precision. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the rotating rod structure of this utility model; Figure 3 This is a schematic diagram of the L-shaped limiting block structure of this utility model; Figure 4 This is a cross-sectional view of the trapezoidal block of this utility model; Figure 5 This is a schematic diagram of the outer shell structure of this utility model.

[0014] The markings in the attached diagram are as follows: 1-threaded cylinder, 2-threaded rod, 3-concave frame, 4-base plate, 5-outer shell, 6-rotating rod, 7-fixed plate, 8-cutting saw blade, 9-motor, 10-bearing, 11-limiting ring, 12-limiting strip, 13-trapezoidal block, 14-L-shaped limit block, 15-rotating wheel, 16-tightening screw, 17-rotating ring, 18-angle marker ball, 19-angle indicator. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Example 1 A bread brick cutting device, such as Figures 1-5As shown, the device includes a base plate 4. A trapezoidal block 13 is slidably connected to the upper surface of the base plate 4. Two L-shaped limiting blocks 14 are rotatably connected to the upper surface of the base plate 4 and on the left and right sides of the trapezoidal block 13 via a rotating shaft. A torsion spring can be added between the L-shaped limiting blocks 14 and the rotating shaft as needed. When the trapezoidal block 13 slides outward from the base plate 4, the torsion spring resets, thereby causing the two rotating wheels 15 to automatically move closer to each other, thus releasing the locking of the L-shaped limiting blocks 14 to the rotating rod 6. A notch is provided at one end of the L-shaped limiting block 14 near the trapezoidal block 13, and a rotating wheel 15 is rotatably connected within the notch. The other end of the L-shaped limiting block 14 is provided with an arc-shaped groove corresponding to the rotating rod 6. The end of the trapezoidal block 13 near the rotating rod 6 is provided with an arc-shaped groove corresponding to the rotating rod 6. The inner surfaces of the arc-shaped groove of the L-shaped limiting block 14 and the arc-shaped groove of the trapezoidal block 13 are provided with anti-slip surfaces to increase the friction between the L-shaped limiting block 14, the trapezoidal block 13 and the rotating rod 6. A tightening screw 16 is rotatably connected at the middle position of the bottom edge of the trapezoidal block 13. The end of the tightening screw 16 located inside the trapezoidal block 13 is fixedly connected with a rotating ring 17. The rotating ring 17 is rotatably connected to the trapezoidal block 13.

[0017] A through hole is provided in the middle of the base plate 4. A rotating rod 6 is rotatably connected in the through hole. A fixing plate 7 is fixedly connected to the bottom end of the rotating rod 6. A motor 9 is fixedly connected to the side of the end of the fixing plate 7. A cutting saw blade 8 is fixedly connected to the output shaft of the motor 9. A housing 5 is fixedly connected to the upper surface of the base plate 4. A round hole is provided on the upper surface of the housing 5. A bearing 10 is fixedly connected to the outside of the rotating rod 6. A limit ring 11 is fixedly connected to the outside of the bearing 10. The limit ring 11 is rotatably connected to the round hole of the housing 5. A tightening screw 16 is threadedly connected to the housing 5. Nine angle marker balls 18 are set at 90° on the upper end face of the bearing 10. The angle between every two angle marker balls 18 is 10°. An angle indicator 19 is set at the position corresponding to one of the angle marker balls 18 on the top of the housing 5. The angle indicator 19 is set at the corresponding 0° angle marker ball 18.

[0018] Limiting strips 12 are fixedly connected to both sides of the base plate 4. A concave frame 3 is slidably connected to the outer side of the limiting strip 12. Two threaded rods 2 are symmetrically fixedly connected to the lower surface of the concave frame 3. A threaded cylinder 1 is rotatably connected to the bottom end of the threaded rod 2. The threaded cylinder 1, threaded rods 2, concave frame 3, base plate 4, and outer shell 5 are all made of lightweight aluminum alloy to reduce the overall weight of the device. Alternatively, the four threaded rods 2 can be replaced with a synchronous adjustment device to reduce adjustment time, depending on the actual needs of use. The adjustment device is existing technology.

[0019] When it is necessary to cut the bread bricks, first fix the bread bricks with the fixing device. According to the thickness of the bread bricks, the height of the bread brick cutting device can be adjusted by rotating the four threaded cylinders 1 to accommodate bread bricks of different thicknesses. Rotate the tightening screw 16 counterclockwise, and the tightening screw 16 rotates outward from the outer shell 5. The rotation of the tightening screw 16 causes the rotating ring 17 to rotate inside the trapezoidal block 13. As the tightening screw 16 moves outward from the outer shell 5, the rotating ring 17 drives the trapezoidal block 13 to slide outward from the base plate 4, so that the trapezoidal block 13 releases the restriction on the rotating rod 6. According to the actual cutting angle required, hold the top of the rotating rod 6 and rotate the rotating rod 6 at a certain angle so that the angle indicator 19 points to the corresponding angle marker ball 18. This angle is adjusted according to the angle required for the actual paving of the bread bricks. Since the outer side of the rotating rod 6 is fixedly connected to the bearing 10, the bearing 10, the limiting ring 11 and the rotation of the outer shell 5 cooperate to allow the rotating rod 6 to adjust the angle quickly and accurately.

[0020] After the angle of the rotating rod 6 is adjusted, it needs to be locked to prevent the bread brick cutting device from rotating during use. Rotate the tightening screw 16 clockwise, and the tightening screw 16 moves into the housing 5. The rotation of the tightening screw 16 drives the trapezoidal block 13 to move into the housing 5 through the rotating ring 17. When the trapezoidal block 13 slides, the rotating wheel 15 slides along the inclined side of the trapezoidal block 13 and pushes one end of the L-shaped limiting block 14 away from the trapezoidal block 13. The other end of the L-shaped limiting block 14 moves closer to the rotating rod 6. When the arc groove of the trapezoidal block 13 contacts the rotating rod 6, the arc grooves of the two L-shaped limiting blocks 14 simultaneously contact the circular outer surface of the rotating rod 6 and lock the rotating rod 6. At this time, the torsion spring stores force.

[0021] Start the motor 9, which drives the cutting saw blade 8 to rotate. Hold the tightening screw 16 and push it forward. The tightening screw 16 drives the base plate 4 to slide and move forward within the concave frame 3. The movement of the base plate 4 drives the cutting saw blade 8 to move synchronously to cut the bread bricks. In actual use, a water tank and a water pump can be installed on the lower side of the base plate 4 to cool the cutting saw blade 8 and reduce dust generation during bread brick cutting, ensuring the health of the operators.

[0022] The embodiments described above are merely preferred embodiments of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications, improvements, and substitutions without departing from the inventive concept, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A bread brick cutting device, characterized in that, It includes a base plate (4), a trapezoidal block (13) is slidably connected to the upper surface of the base plate (4), and two L-shaped limiting blocks (14) are rotatably connected to the upper surface of the base plate (4) and on the left and right sides of the trapezoidal block (13) via a rotating shaft. The L-shaped limiting block (14) has a notch at one end near the trapezoidal block (13), and a rotating wheel (15) is rotatably connected inside the notch. A tightening screw (16) is rotatably connected at the middle position of the bottom edge of the trapezoidal block (13), and a rotating ring (17) is fixedly connected to the end of the tightening screw (16) inside the trapezoidal block (13).

2. The bread brick cutting device according to claim 1, characterized in that, A through hole is provided in the middle of the base plate (4), and a rotating rod (6) is rotatably connected in the through hole. A fixing plate (7) is fixedly connected to the bottom end of the rotating rod (6), and a motor (9) is fixedly connected to the side of the end of the fixing plate (7). A cutting saw blade (8) is fixedly connected to the output shaft of the motor (9).

3. The bread brick cutting device according to claim 2, characterized in that, The upper surface of the base plate (4) is fixedly connected to the outer shell (5), and the upper surface of the outer shell (5) is provided with a round hole. The outer side of the rotating rod (6) is fixedly connected to the bearing (10), and the outer side of the bearing (10) is fixedly connected to the limiting ring (11). The limiting ring (11) is rotatably connected to the round hole of the outer shell (5). The tightening screw (16) is threadedly connected to the outer shell (5). Nine angle marker balls (18) are set at 90° on the upper end face of the bearing (10). An angle indicator (19) is set at the position corresponding to one of the angle marker balls (18) on the top of the outer shell (5).

4. A bread brick cutting device according to claim 3, characterized in that, Limiting strips (12) are fixedly connected to both sides of the base plate (4), and a concave frame (3) is slidably connected to the outer side of the limiting strips (12).

5. A bread brick cutting device according to claim 4, characterized in that, Two threaded rods (2) are symmetrically fixedly connected to the lower surface of the concave frame (3), and a threaded cylinder (1) is rotatably connected to the bottom end of the threaded rods (2).

6. A bread brick cutting device according to claim 5, characterized in that, The other end of the L-shaped limiting block (14) is provided with an arc-shaped groove corresponding to the rotating rod (6), and the end of the trapezoidal block (13) near the rotating rod (6) is provided with an arc-shaped groove corresponding to the rotating rod (6).

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