A double half-moon cutter

Abstract

This utility model relates to the field of pipe cutting technology, and more particularly to a double crescent-shaped cutter. The double crescent-shaped cutter includes a mounting head, on which a crescent-shaped blade is mounted, with the cutting surfaces of the two blades facing each other. A pressure boosting component is mounted on the mounting head. Under the elastic force of a compression spring, the double crescent-shaped cutter provides this utility model to slide the feed cylinder along the connecting pipe towards the mounting head. During this process, the long plate slides forward along the connecting pipe with the feed cylinder, thus driving the short drive plate to deflect towards the crescent-shaped blades. This causes the short drive plate to push the crescent-shaped blades together, allowing the two blades to initially cut the hose. Subsequently, by reciprocating the handle, the operator only needs to make a small reciprocating deflection of the handle to allow the two crescent-shaped blades to cut the hose from all directions, greatly improving the hose cutting speed.

Description

Technical Field

[0001] This utility model relates to the field of pipe cutting technology, and in particular to a double crescent-shaped cutter. Background Technology

[0002] In daily hose cutting, steel blades are usually used, which not only have insufficient shearing force but also take a long time and can easily cause worker fatigue. If a common cutter is used (which is long), it is easily affected by the operating space, making it impossible to make circular cuts in some narrow spaces. Repeated cutting is often required, which can easily lead to deformation of the cut. While electric / hydraulic cutters can improve efficiency, they have drawbacks such as large size, high cost, and dependence on external power.

[0003] Therefore, it is necessary to provide a new double crescent-shaped cutter to solve the above-mentioned technical problems. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a double crescent-shaped cutter.

[0005] The double crescent-shaped cutter provided by this utility model includes a mounting head, on which two rotatably connected crescent-shaped cutting blades are mounted, and the cutting surfaces of the two crescent-shaped cutting blades are arranged opposite to each other.

[0006] The mounting head is equipped with a pressurizing component, and the pressurizing component includes a connecting pipe. The connecting pipe is fixedly installed on the connecting end at the tail of the mounting head, and an external threaded fixing sleeve is fixedly installed on the end of the connecting pipe away from the mounting head. A slidingly connected push cylinder is sleeved on the connecting pipe, and a compression spring is sleeved on the connecting pipe between the push cylinder and the external threaded fixing sleeve.

[0007] The propulsion cylinder is equipped with two sets of docking components distributed vertically, which drive two crescent-shaped blades to shear or open.

[0008] Preferably, the external threaded fixing sleeve has an annular receiving cavity, the propulsion cylinder has an internal threaded annular groove, and the internal threaded annular groove matches the external threaded fixing sleeve.

[0009] Preferably, one end of the compression spring is fixedly connected to the inner wall of the annular receiving cavity, and the other end of the compression spring abuts against the internal threaded annular groove.

[0010] Preferably, the docking component includes a long connecting plate, one end of which is rotatably connected to a short drive plate, and the short drive plate is mounted on the back of the blade near the tip of the crescent-shaped cutting edge via a rotating bracket B. A rotating ring is mounted on the feed cylinder, and the long connecting plate is mounted on the rotating ring via a rotating bracket A.

[0011] Preferably, the crescent-shaped blade has a serrated section near the blade tip.

[0012] Preferably, a handle is fixedly installed at the tail end of the connecting pipe.

[0013] Compared with related technologies, the double crescent-shaped cutting blade provided by this utility model has the following beneficial effects:

[0014] Under the elastic force of the compression spring, the push cylinder slides along the connecting pipe towards the mounting head. During this process, the long plate slides forward along the connecting pipe with the push cylinder, thus driving the short drive plate to deflect towards the crescent blade. This causes the short drive plate to push the crescent blade to close, allowing the two crescent blades to perform initial shearing on the hose. Subsequently, by reciprocating the handle, the operator only needs to make a small reciprocating deflection of the handle to allow the two crescent blades to cut the hose from all directions, greatly improving the hose cutting speed. Attached Figure Description

[0015] Figure 1 One of the structural schematic diagrams of a preferred embodiment of the double crescent-shaped cutter provided by this utility model;

[0016] Figure 2 A second schematic diagram of a preferred embodiment of the double crescent-shaped cutter provided by this utility model;

[0017] Figure 3 for Figure 2 A cross-sectional view of the booster component shown.

[0018] Figure 4 for Figure 1 A partial enlarged cross-sectional view of the crescent-shaped cutting edge shown.

[0019] Figure 5 This is a schematic diagram of the operation structure of the double crescent-shaped cutter provided by this utility model when cutting the rubber tube.

[0020] The following are the labeling elements in the diagram: 1. Mounting head; 2. Crescent blade; 21. Serrated section; 3. Pressure boosting component; 31. Connecting pipe; 32. External threaded fixing sleeve; 32a. Annular receiving cavity; 33. Propulsion cylinder; 33a. Internal threaded annular groove; 34. Compression spring; 4. Connecting part; 41. Long connecting plate; 411. Rotating A bracket; 42. Short drive plate; 421. Rotating B bracket; 43. Rotating ring; 5. Handle. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0023] Please see Figures 1 to 4 The present invention provides a double crescent-shaped cutter, which includes a mounting head 1, a crescent-shaped cutting edge 2, and a pressure boosting component 3.

[0024] In the embodiments of this utility model, please refer to Figures 1 to 4 Two rotatably connected crescent blades 2 are mounted on the rotating shaft of the mounting head 1, and the blade surfaces of the two crescent blades 2 are set opposite to each other.

[0025] A pressurizing component 3 is installed on the mounting head 1, and the pressurizing component 3 includes a connecting pipe 31. The connecting pipe 31 is fixedly installed on the connecting end at the tail of the mounting head 1, and an external threaded fixing sleeve 32 is fixedly installed on the end of the connecting pipe 31 away from the mounting head 1. A slidingly connected push cylinder 33 is fitted on the connecting pipe 31, and a compression spring 34 is fitted on the connecting pipe 31 between the push cylinder 33 and the external threaded fixing sleeve 32. The external threaded fixing sleeve 32 has an annular receiving cavity 32a, and the push cylinder 33 has an internal threaded annular groove 33a. The internal threaded annular groove 33a matches the external threaded fixing sleeve 32. One end of the compression spring 34 is fixedly connected to the inner wall of the annular receiving cavity 32a, and the other end of the compression spring 34 abuts against the inner groove wall of the internal threaded annular groove 33a.

[0026] The push cylinder 33 is equipped with two sets of docking parts 4 distributed vertically. The two sets of docking parts 4 drive the two crescent blades 2 to shear or open. The docking parts 4 include a long connecting plate 41. One end of the long connecting plate 41 is rotatably connected to a short driving plate 42. The short driving plate 42 is mounted on the back of the crescent blade 2 near the blade head position through a rotating bracket B 421. The push cylinder 33 is equipped with a rotating ring 43 that is rotatably connected. The long connecting plate 41 is mounted on the rotating ring 43 through a rotating bracket A 411.

[0027] It should be noted that in the initial state, the push cylinder 33 slides along the connecting tube 31 toward the external threaded fixing sleeve 32 until the push cylinder 33 is threadedly fixedly connected to the external threaded fixing sleeve 32, and the compression spring 34 is compressed and stored in the annular storage cavity 32a. During this process, the long connecting plate 41 slides backward along the connecting tube 31 with the push cylinder 33. Therefore, the long connecting plate 41 and the short drive plate 42 rotate to form a straight plate structure and pull the crescent blade 2 to open.

[0028] When the double crescent-shaped cutter is needed to cut the hose, the two open crescent-shaped blades 2 are inserted into the hose cutting section. Then, the counter-rotating push cylinder 33 drives it to slide off the external threaded fixing sleeve 32. Under the elastic force of the compression spring 34, the push cylinder 33 slides along the connecting pipe 31 towards the mounting head 1. During this process, the extended plate 41 slides forward along the connecting pipe 31 with the push cylinder 33. Therefore, the extended plate 41 drives the short drive plate 42 to deflect towards the crescent-shaped blades 2, causing the short drive plate 42 to push the crescent-shaped blades 2 to close. Thus, the two crescent-shaped blades 2 can perform initial cutting of the hose. Afterwards, the operator can reciprocate by rotating the handle 5 (as shown in the attached diagram). Figure 5 As shown in the operation, the operator only needs to make a small reciprocating deflection of the handle 5 so that the two crescent blades 2 can cut the hose in all directions. The two crescent blades 2 are constantly subjected to the driving pressure composed of the compression spring 34, the long extension plate 41, and the short drive plate 42, which greatly improves the hose cutting speed.

[0029] It is worth noting that if the crescent blade 2 fails to cut along the radial direction of the hose, the push cylinder 33 can be manually pushed forward to allow the crescent blade 2 to complete the cutting of the hose.

[0030] In this embodiment: to avoid the compression spring 34 from twisting due to the rotation of the propulsion cylinder 33, a rotating disk is installed on the inner wall of the propulsion cylinder 33, and the compression spring 34 can be abutted against or fixedly connected to the rotating disk.

[0031] In this application, the compression spring 34 can have a wire diameter of 0.8-1.2mm (piano wire material) and an outer diameter of 8-12mm (matching the size of the annular storage cavity 32a), with a stiffness coefficient of 0.3-0.6N / mm. This eliminates the potential risk of the push cylinder 33 sliding towards the tail of the connecting tube 31 due to centrifugal force when the handle 5 is reciprocating. Alternatively, the model and coefficient of the compression spring 34 can be selected according to the specific material of the cutting hose.

[0032] Furthermore, the crescent blade 2 has a serrated section 21 near the blade tip, which enables the crescent blade 2 to perform sawing cuts.

[0033] The tail end of the connecting pipe 31 is fixedly equipped with a handle 5, which makes it convenient for staff to drive it by hand.

[0034] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0035] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A double half-moon cutter, characterized by, Includes a mounting head (1), on which two rotatably connected crescent blades (2) are mounted, and the blade surfaces of the two crescent blades (2) are arranged opposite to each other; A pressurizing component (3) is installed on the mounting head (1), and the pressurizing component (3) includes a connecting pipe (31). The connecting pipe (31) is fixedly installed on the connecting end at the tail of the mounting head (1), and an external threaded fixing sleeve (32) is fixedly installed on the end of the connecting pipe (31) away from the mounting head (1). A slidingly connected push cylinder (33) is sleeved on the connecting pipe (31), and a compression spring (34) is sleeved on the connecting pipe (31) between the push cylinder (33) and the external threaded fixing sleeve (32). The propulsion cylinder (33) is equipped with two sets of vertically distributed docking parts (4), which drive two crescent blades (2) to shear or open.

2. The dual half-moon cutter of claim 1, wherein, The external threaded fixing sleeve (32) is provided with an annular receiving cavity (32a), and the propulsion cylinder (33) is provided with an internal threaded annular groove (33a), and the internal threaded annular groove (33a) matches the external threaded fixing sleeve (32).

3. The dual half-moon cutter of claim 2, wherein, One end of the compression spring (34) is fixedly connected to the inner wall of the annular receiving cavity (32a), and the other end of the compression spring (34) abuts against the inner groove wall of the internal threaded annular groove (33a).

4. The dual half-moon cutter of claim 1, wherein, The docking component (4) includes a long connecting plate (41), one end of which is rotatably connected to a short drive plate (42), and the short drive plate (42) is mounted on the back of the blade near the head of the crescent blade (2) via a rotating bracket B (421). A rotating ring (43) is mounted on the push cylinder (33), and the long connecting plate (41) is mounted on the rotating ring (43) via a rotating bracket A (411).

5. The dual half-moon cutter of claim 1, wherein, The crescent-shaped blade (2) has a serrated section (21) near the blade tip.

6. The dual half-moon cutter of claim 1, wherein, A handle (5) is fixedly installed at the tail of the connecting pipe (31).

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