A cutting tool

Abstract

The utility model relates to the gasket cutting technical field discloses a cutting tool, the cutting tool, including the chassis, the chassis top fixed connection connecting rod bottom, the connecting rod outside is provided with cutting assembly. The cutting tool, in order to cut out gasket more conveniently, by setting up cutting assembly, first cooperation chassis, connecting rod and top block constitute the basic frame of tool body, screw cap is screwed on the cylinder, places screw cap on gasket raw material top, cooperation controller positive and negative start asynchronous motor, make screw rod asynchronous rotation, make screw block can move up and down, cooperation driving rod and hinged block make multiple groups of driven rod can move away from each other or close to each other, simultaneously when starting electric push rod, make round rod axial movement, drive blade to extend into gasket raw material target position inside, start servo motor, make blade whole do revolution circular motion, thereby cut out the circular gasket body, and cutting efficiency is higher, and tool use is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of gasket cutting technology, specifically a cutting tool. Background Technology

[0002] In the industrial sector, especially in oil depot facilities, PTFE gaskets are widely used in flange connections. Their main function is to achieve a sealing function. Connections between pipes, between pipes and oil pumps, between pipes and filters, and between pipes and oil tanks in oil depots mostly use flange connections. In these connections, PTFE gaskets can effectively prevent liquid or gas leakage, ensuring the normal operation of the entire system. The Shore hardness of PTFE gaskets is usually between 55-70HA. Compared with materials such as metals and ceramics, it has lower hardness and a softer texture. It can tightly fit the sealing surface, fill tiny gaps, and achieve a good seal. While maintaining flexibility, it also has a certain pressure resistance and will not easily deform or be squeezed out of the sealing area under certain pressure.

[0003] Because pipes vary in size and diameter, different sizes of PTFE gaskets are required for actual use. When gaskets are damaged or aged and need to be replaced, temporary gaskets are often made. Different pipe diameters require different sizes of gaskets, but it is difficult to supply PTFE gaskets of various sizes on the market at any time, which cannot meet the needs of the site in a timely manner. If a large number of gaskets of different specifications are stored, it will increase inventory costs and may also cause the gasket performance to deteriorate due to long-term storage.

[0004] Currently, there is a lack of specialized tools for cutting PTFE gaskets when temporary gaskets are needed. Using existing general-purpose tools to cut PTFE gaskets is complicated, time-consuming, and inconvenient to carry, making it impossible to quickly and easily cut gaskets of different sizes. Its practicality needs to be improved. In emergency situations, such as when gaskets need to be replaced quickly due to leaks in oil depot pipelines, the inefficient manufacturing method will prolong the repair time. In view of this, we propose a cutting tool. Utility Model Content

[0005] The purpose of this invention is to provide a cutting tool to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A cutting tool includes a chassis, a connecting rod bottom fixedly connected to the top of the chassis, a top block fixedly mounted on the top of the connecting rod, and a cutting assembly disposed outside the connecting rod, the cutting assembly comprising:

[0008] The controller is snapped onto the top of the chassis, and the bottom center of the chassis is fixedly installed outside the top output end of the servo motor. A cylinder is fixedly installed at the bottom of the servo motor, and a threaded cap is threadedly fitted to the bottom end of the cylinder.

[0009] An asynchronous motor is fixedly mounted on the top of the top block. The bottom output end of the asynchronous motor is fixedly connected to the top of a threaded rod. The bottom end of the threaded rod is rotatably mounted inside the center of the chassis via a bearing. A threaded block is threadedly fitted on the threaded rod. One end of a driving rod is hingedly mounted on the threaded block. The other end of the driving rod is hingedly mounted inside the hinge block. One end of a driven rod is fixedly connected to the outer wall of one end of the hinge block. The other end of the driven rod is hingedly mounted inside the top block.

[0010] An electric push rod is provided, with the other end of the hinge block fixedly connected to the fixed end of the electric push rod. The piston end of the electric push rod is fixedly connected to one end of a round rod, and a blade is fixedly installed on the other end of the round rod.

[0011] In a further embodiment, the connecting rod is provided in multiple sets.

[0012] In a further embodiment, the circular cross-sections of the chassis, top block, cylinder, threaded cover, threaded rod, and threaded block are coaxial.

[0013] In a further embodiment, multiple sets of the active rod, hinge block, driven rod, electric push rod, round rod, and blade are provided. Furthermore, all sets of the active rod, hinge block, driven rod, electric push rod, round rod, and blade are arranged in an equally spaced circular array with the center of the circular cross-section of the threaded rod as the array center, resulting in higher cutting efficiency and more convenient tool use.

[0014] In a further embodiment, an auxiliary component is provided on the outside of the chassis. The auxiliary component includes a slot. The chassis has multiple slots, and the size of the slots is adapted to the round rod.

[0015] In a further embodiment, a protective sleeve is fitted over the end of the round rod away from the electric push rod, which makes it easier to carry and store the tool body and also prevents accidental injury from the blade.

[0016] In a further embodiment, a measuring tape body is snapped into the inside of the cylinder. The measuring tape body includes a measuring tape. The measuring tape body is coaxial with the center of the circular cross-section of the cylinder. A through groove is formed on the arc-shaped side wall of the cylinder, through which the measuring tape passes. One end of a side rod is fixedly connected to the top of the cylinder, and a pointer is fixedly installed on the other end of the side rod. The pointer is tangent to the arc-shaped outer wall of the cylinder, allowing for better pre-setting of the radius value of the required shim.

[0017] Compared with the prior art, the present invention provides a cutting tool with the following advantages:

[0018] 1. This cutting tool, designed for easier gasket cutting, incorporates a cutting assembly. First, a base, connecting rod, and top block form the basic frame of the tool body. The threaded cap is screwed onto the cylinder and placed on top of the gasket material. The controller activates the asynchronous motor in both directions, causing the threaded rod to rotate asynchronously, allowing the threaded block to move up and down. The active rod and hinge block allow multiple driven rods to move closer or further apart. Simultaneously, activating the electric push rod moves the cylindrical rod axially, driving the blade into the target position within the gasket material. Activating the servo motor causes the blade to perform a circular revolution, thus cutting out a circular gasket body. This results in higher cutting efficiency and greater ease of use.

[0019] 2. To enhance the practicality of this cutting tool, an auxiliary component is incorporated. When the tool needs to be stored, the asynchronous motor reverses, causing the threaded block to return to its original position. This allows multiple sets of round rods to move closer together and return to their original positions. The electric push rod then reverses, causing the blades to return to their original positions along with the round rods. This allows the round rods to be engaged in the slots, and the protective cover can then be placed over them. This makes the tool easier to carry and store, and also prevents accidental injury from the blades. Before cutting, the measuring tape can be pulled out, bringing its tip close to one of the sets of blades. By using the side rod and pointer to obtain the readings on the measuring tape, and combining this with the known radius of the bottom of the cylinder, the radius of the required shim can be pre-set. This allows for more convenient cutting of shims of the desired radius. In summary, this significantly improves the practicality of the tool. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of part of the structure of this utility model;

[0022] Figure 3 This is a cross-sectional view of the cylindrical part of this utility model;

[0023] Figure 4 This utility model Figure 3 A magnified structural diagram of region A in the middle.

[0024] Explanation of icon numbers:

[0025] 1. Chassis; 2. Connecting rod; 3. Top block;

[0026] 4. Cutting assembly; 40. Controller; 41. Servo motor; 42. Cylinder; 43. Threaded cap; 44. Asynchronous motor; 45. Threaded rod; 46. Threaded block; 47. Driving rod; 48. Hinge block; 49. Driven rod; 410. Electric push rod; 411. Round rod; 412. Blade;

[0027] 5. Auxiliary components; 51. Slot; 52. Protective sleeve; 53. Measuring tape body; 54. Measuring tape; 55. Through slot; 56. Side rod; 57. Pointer. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] In this application, the term "above" indicates the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is primarily used to better describe this application and its embodiments, and is not intended to limit the indicated device, element, or component to having a specific orientation, or to construct and operate in a specific orientation. Furthermore, the term "above" may also be used in certain circumstances to indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances.

[0030] Please see Figures 1-4 This utility model provides a technical solution:

[0031] A cutting tool includes a chassis 1, with the bottom of a connecting rod 2 fixedly connected to the top of the chassis 1. In addition, the connecting rod 2 is provided with three sets, and a top block 3 is fixedly installed on the top of the connecting rod 2.

[0032] In one embodiment of this utility model, a cutting assembly 4 is provided outside the connecting rod 2. The cutting assembly 4 includes a controller 40. The controller 40 is snapped onto the top of the chassis 1. The bottom center of the chassis 1 is fixedly installed outside the top output end of the servo motor 41. A cylinder 42 is fixedly installed at the bottom of the servo motor 41. A threaded cap 43 is threadedly fitted at the bottom end of the cylinder 42. An asynchronous motor 44 is fixedly installed at the top of the top block 3. The bottom output end of the asynchronous motor 44 is fixedly connected to the top of the threaded rod 45. The bottom end of the threaded rod 45 is rotatably installed at the center inside the chassis 1 through a bearing. A threaded block 46 is threadedly fitted on the threaded rod 45. In addition, the circular cross-sections of the chassis 1, top block 3, cylinder 42, threaded cap 43, threaded rod 45, and threaded block 46 are coaxial. An active rod 47 is hingedly installed on the threaded block 46. The active rod 47 is hinged to the other end of the hinge block 48. The outer wall of one end of the hinge block 48 is fixedly connected to one end of the driven rod 49. The other end of the driven rod 49 is hinged to the inside of the top block 3. The outer wall of the other end of the hinge block 48 is fixedly connected to the fixed end of the electric push rod 410. The piston end of the electric push rod 410 is fixedly connected to one end of the round rod 411. The other end of the round rod 411 is fixedly mounted with a blade 412. In addition, there are three sets of active rod 47, hinge block 48, driven rod 49, electric push rod 410, round rod 411 and blade 412. The three sets of active rod 47, hinge block 48, driven rod 49, electric push rod 410, round rod 411 and blade 412 are all arranged in a circumferential array with the center of the circular cross section of the threaded rod 45 as the array center, which results in higher cutting efficiency and more convenient tool use.

[0033] In this embodiment, the chassis 1, connecting rod 2, and top block 3 form the basic structure of the tool body. The threaded cap 43 is tightly screwed onto the cylinder 42 and placed on top of the gasket material to be cut, preparing for the cutting operation. The controller 40 is removed from the chassis 1, and the asynchronous motor 44 is started through the controller 40 to make it run in the forward direction. When the asynchronous motor 44 runs, it drives the threaded rod 45 to rotate synchronously in the forward direction. Since there is a threaded engagement between the threaded rod 45 and the threaded block 46, according to the principle of thread transmission, when the threaded rod 45 rotates, the threaded block 46 will move downward along the threaded rod 45. As the threaded block 46 moves downward, because one end of the driving rod 47 is hinged to the threaded block 46 and the other end of the driving rod 47 is hinged to the inside of the hinge block 48, which is connected to the driven rod 49, the movement of the threaded block 46 will drive multiple sets of driven rods 49 to move away from each other around the center of the circular cross-section of the threaded rod 45 through the driving rod 47 and the hinge block 48. At the same time, the electric push rod 410 is activated to run in the forward direction. The piston end of the electric push rod 410 pushes the round rod 411 to move in the axial direction away from the electric push rod 410, thereby driving the rod 411 fixed to the round rod 41. 1. The blade 412 at the other end smoothly extends into the target cutting position of the gasket material. When the blade 412 reaches the predetermined position, the servo motor 41 is activated. The servo motor 41 is installed at the center of the bottom of the chassis 1, and its top output end is fixedly connected to the chassis 1. A cylinder 42 is fixedly installed at the bottom. The blade 412 and other components are linked to the cylinder 42. When the servo motor 41 is running, it can drive multiple sets of blades 412 to synchronously revolve around the center of the circular cross-section of the threaded rod 45. During the circular motion of the blade 412, its sharp cutting edge cuts the gasket material. The entire structure moves in a manner similar to a compass. With the continuous movement of the blade 412, a circular gasket body is eventually cut from the gasket material. Since the active rod 47, hinge block 48, driven rod 49, electric push rod 410, circular rod 411, and blade 412 are arranged in three sets and distributed in a circumferential array, this structural design ensures uniform force during the cutting process, thereby improving cutting efficiency. At the same time, by adjusting the position of the blade 412, gaskets of different sizes can be cut to meet diverse usage needs. Specifically, the farther the blade 412 is from the chassis 1, the larger the radius of the gasket formed by cutting.

[0034] In one embodiment of this utility model, an auxiliary component 5 is provided on the outside of the chassis 1. The auxiliary component 5 includes a slot 51. The chassis 1 has three sets of slots 51, and the slots 51 are adapted to the size of the round rod 411. In addition, a protective sleeve 52 is provided on the end of the round rod 411 away from the electric push rod 410. Three sets of protective sleeves 52 are provided, which makes it easier to carry and store the tool body and can also prevent the blade 412 from causing accidental injury. In addition, a measuring tape body 53 is snapped into the inside of the cylinder 42. The measuring tape body 53 includes a tape 54. The measuring tape body 53 is coaxial with the center of the circular cross section of the cylinder 42. A through slot 55 is provided on the arc-shaped side wall of the cylinder 42. The tape 54 passes through the through slot 55. One end of the side rod 56 is fixedly connected to the top of the cylinder 42. A pointer 57 is fixedly installed on the other end of the side rod 56. The pointer 57 is tangent to the arc-shaped outer wall of the cylinder 42, so as to better set the radius value of the required shim in advance.

[0035] In this embodiment, when the cutting work is completed and the tools need to be stored, the controller 40 reverses the operation of the asynchronous motor 44. The asynchronous motor 44 reverses and drives the threaded rod 45 to rotate in the opposite direction. According to the thread transmission principle, the threaded block 46 will return to its original position along the threaded rod 45. As the threaded block 46 moves upward, multiple sets of round rods 411 move towards the center and return to their original position under the linkage of the driving rod 47, driven rod 49, and other components. Then, the electric push rod 410 reverses the operation, and the piston end of the electric push rod 410 retracts, driving the round rods 411. The tool is reset along with the blade 412. After reset, the round rod 411 is inserted into the pre-cut slot 51 on the base plate 1. The slot 51 is sized to fit the round rod 411, providing good fixation. Then, a protective sleeve 52 is placed on the end of the round rod 411 away from the electric push rod 410. The protective sleeve 52 effectively protects the blade 412 from damage and prevents accidental injury to the user during storage and carrying, thus achieving safe and convenient carrying and storage of the tool body. This is especially important during cutting. Before the task, when it is necessary to accurately determine the radius of the required cutting shim, the measuring tape 54 of the measuring tape body 53 is pulled out from inside the cylinder 42. The measuring tape 54 passes through the through groove 55 on the arc-shaped side wall of the cylinder 42. Pulling the measuring tape 54 so that its front end is close to one of the sets of blades 412 is a good starting point. It is worth noting that the servo motor 41 is a stepper motor, so that one set of blades 412 that is close to the shim material is always in front of the measuring tape 54. This avoids the measuring tape 54 being bent when measuring, and ensures that the pointer 57 always points perpendicularly to the shim. The pointer 57 reads the value on the ruler 54 by pointing to the position on the ruler 54. Since the pointer 57 is tangent to the arc-shaped outer wall of the cylinder 42, the scale value on the ruler 54 can be obtained relatively accurately. This value is added to the known radius value of the bottom end of the cylinder 42 to obtain the final radius value of the required shim. Based on this accurate radius setting, the shim with the required radius can be cut more conveniently and accurately in the subsequent cutting process, improving the practicality of the tool body and the convenience of the cutting operation.

[0036] In this application, all electrical components are electrically connected to the controller 40 and the backup power supply (not shown in the figure). The controller 40 is a conventional and known device that can control the servo motor 41, the asynchronous motor 44, and the electric actuator 410. The asynchronous motor 44 is a self-locking motor. All standard parts used in this application can be purchased from the market. The specific connection methods of each part are all conventional methods such as riveting and welding that are mature in the prior art. The machinery, parts, and equipment are all conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, and will not be described in detail here.

[0037] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A cutting tool, comprising a chassis (1), wherein the top of the chassis (1) is fixedly connected to the bottom of a connecting rod (2), and a top block (3) is fixedly mounted on the top of the connecting rod (2), characterized in that: A cutting assembly (4) is provided on the outside of the connecting rod (2), and the cutting assembly (4) includes: The controller (40) is snapped onto the top of the chassis (1). The bottom center of the chassis (1) is fixedly installed outside the top output end of the servo motor (41). A cylinder (42) is fixedly installed at the bottom of the servo motor (41). A threaded cap (43) is threadedly fitted at the bottom end of the cylinder (42). An asynchronous motor (44) is fixedly installed on the top of the top block (3). The output end of the asynchronous motor (44) is fixedly connected to the top of the threaded rod (45). The bottom end of the threaded rod (45) is rotatably installed in the center of the chassis (1) through a bearing. A threaded block (46) is threadedly fitted on the threaded rod (45). One end of the driving rod (47) is hingedly installed on the threaded block (46). The other end of the driving rod (47) is hingedly installed inside the hinge block (48). One end of the driven rod (49) is fixedly connected to the outer wall of one end of the hinge block (48). The other end of the driven rod (49) is hingedly installed inside the top block (3). An electric push rod (410) is fixedly connected to the fixed end of the electric push rod (410) on the outer wall of the other end of the hinge block (48). The piston end of the electric push rod (410) is fixedly connected to one end of a round rod (411), and a blade (412) is fixedly installed on the other end of the round rod (411).

2. A cutting tool according to claim 1, characterized in that: The connecting rod (2) is provided in multiple sets.

3. A cutting tool according to claim 1, characterized in that: The circular cross-sections of the chassis (1), top block (3), cylinder (42), threaded cover (43), threaded rod (45), and threaded block (46) are coaxial.

4. A cutting tool according to claim 1, characterized in that: The active rod (47), hinge block (48), driven rod (49), electric push rod (410), round rod (411) and blade (412) are provided in multiple sets, and the multiple sets of the active rod (47), hinge block (48), driven rod (49), electric push rod (410), round rod (411) and blade (412) are all arranged in an equally spaced circular array with the center of the circular cross-section of the threaded rod (45) as the array center.

5. A cutting tool according to claim 1, characterized in that: An auxiliary component (5) is provided on the outside of the chassis (1). The auxiliary component (5) includes a slot (51). The chassis (1) has a slot (51) with multiple sets of slots (51), and the slot (51) is adapted to the size of the round rod (411).

6. A cutting tool according to claim 5, characterized in that: A protective sleeve (52) is fitted onto the end of the round rod (411) away from the electric push rod (410).

7. A cutting tool according to claim 6, characterized in that: The measuring tape body (53) is snapped into the inside of the cylinder (42). The measuring tape body (53) includes a tape (54). The measuring tape body (53) is coaxial with the center of the circular cross-section of the cylinder (42). The arc-shaped side wall of the cylinder (42) is provided with a through groove (55). The tape (54) passes through the through groove (55). One end of a side rod (56) is fixedly connected to the top of the cylinder (42). A pointer (57) is fixedly installed at the other end of the side rod (56). The pointer (57) is tangent to the arc-shaped outer wall of the cylinder (42).

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