Length-controllable pipe fitting cutting equipment

Abstract

The utility model relates to the technical field of heat exchanger production, in particular to length-controllable pipe fitting cutting equipment which comprises a welding table, one end of the top of the welding table is connected with a datum plate in a sliding mode through a sliding rod, the top of the datum plate is fixedly connected with the power output end of a first air cylinder, and a top moving frame is arranged on one side of the datum plate. According to the improved cutting equipment, the datum plate provides accurate zero-point positioning for placement of the pipe fittings, all the pipe fittings can take the datum plate as a unified reference, it is guaranteed that the initial positions of all the pipe fittings are consistent, the top moving frame is in horizontal transmission through the first lead screw and is connected with the displacement sensor, and an operator can accurately position the pipe fittings according to numerical values fed back by the displacement sensor. The position of the top moving frame is accurately controlled by combining a ruler on the surface of the welding table, it can be guaranteed that the cutting length and height of each pipe fitting are consistent in the batch cutting process, errors caused by manual measurement and adjustment are avoided, and the cutting precision is further improved.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger manufacturing technology, specifically to a tube cutting device with controllable length. Background Technology

[0002] A heat exchanger is a device that transfers some of the heat from a hot fluid to a cold fluid. It enables the transfer of heat from a higher-temperature fluid to a lower-temperature fluid to meet various process requirements such as heating, cooling, condensation, and evaporation. It is widely used in chemical, petroleum, power, food, and many other industrial sectors.

[0003] Heat exchangers are typically composed of many tubes of different sizes and shapes, such as heat exchange tubes and connecting tubes. Therefore, cutting equipment is used. Tube cutting equipment can cut the tubes according to precise dimensional requirements to ensure that the length, diameter and other parameters of each tube meet the design standards, thereby ensuring the overall structural accuracy and performance of the heat exchanger.

[0004] In the process of realizing this utility model, the inventors discovered the following problems with the existing technology: 1. Existing equipment cannot provide a clear zero-point positioning benchmark. When placing pipe fittings, the starting position of the pipe fittings lacks a unified reference, and the placement positions of different pipe fittings are prone to large deviations. This makes it difficult to guarantee the accuracy of the cutting position, which can easily lead to large cutting errors, poor product consistency, and a high scrap rate; 2. Many existing equipment can only process pipe fittings one by one. In large-scale production, the single processing mode greatly extends the production cycle, limits production capacity, and makes it difficult to meet the market's rapid demand for product quantity. Utility Model Content

[0005] The purpose of this invention is to provide a pipe cutting device with controllable length, in order to solve the problems mentioned in the background art, such as the lack of a unified reference for the starting position of the pipe, which makes it difficult to guarantee the accuracy of the cutting position, easily leading to large cutting errors and the inability to process one by one. To achieve the above objectives, this utility model provides the following technical solution: a pipe cutting device with controllable length, comprising a welding table, a reference plate slidably connected to one end of the top of the welding table via a slide rod, the top of the reference plate being fixedly connected to the power output end of a first cylinder, a top moving frame provided on one side of the reference plate, a first positioner fixedly connected to the top moving frame via a second cylinder thereon, a first lead screw rotatably connected to one end of the welding table, and a slide rod fixedly connected to the other end, one end of the top moving frame threadedly connected to the outer wall of the first lead screw, and the other end slidably connected to the outer wall of the slide rod, a second lead screw rotatably connected to the bottom of the welding table, slide rods fixedly connected to both ends of the second lead screw, a bottom moving frame slidably connected to the welding table via the slide rods fixedly connected to its bottom, the second lead screw passing through the bottom moving frame and threadedly connected to a through hole therein, a third lead screw rotatably connected to the inside of the bottom moving frame, a cutting assembly slidably connected to the top of the bottom moving frame, and a second positioner fixedly connected to the top of the bottom moving frame.

[0006] More preferably, the bottom of the reference plate has a "T"-shaped protrusion, and the surface of the welding station has a slot for insertion and connection with the reference plate directly below it. A number of hole-like structures communicating with the slot are distributed on one side of the outside of the welding station. At the same time, a scale is marked on the top of the welding station, and the reference plate is located at the initial point of the scale.

[0007] In a further preferred embodiment, the top moving frame forms a horizontal transmission structure on the surface of the welding table via a first lead screw, and a displacement sensor is fixedly connected to one side of the outer wall of the welding table, with one end of the displacement sensor having a pull rope head fixedly connected to one side of the top moving frame.

[0008] More preferably, the second lead screw is vertically distributed between the first lead screw and the cutting assembly and the second positioner move horizontally on one side of the welding table by means of the helical transmission structure of the bottom moving frame and the second lead screw.

[0009] More preferably, the cutting assembly consists of a stand, a cutting blade, and a synchronizing element. One end of the stand is threaded to the outer wall of the third lead screw and forms a helical transmission structure therewith. The cutting blade and the synchronizing element are rotatably connected between the inner wall of the cutting assembly stand. The synchronizing element consists of two upper and lower synchronizing wheels and a toothed belt meshing with the outside of the two synchronizing wheels. The lower synchronizing wheel is coaxially connected to the cutting blade.

[0010] More preferably, both the first and second positioners consist of a top plate and a bottom plate, and a screw is threadedly connected to the top of the top plate of the second positioner. The shaft of the screw passes through the top plate and is rotatably connected to the top of the bottom plate.

[0011] More preferably, the base plates of both the first and second positioners are covered with rubber pads, and the surface of the rubber pads has a grid pattern.

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

[0013] In this invention, the reference plate is located at the initial point of the scale, providing precise zero-point positioning for the placement of pipe fittings. When processing pipe fittings of the same specification in batches, all pipe fittings can use the reference plate as a unified reference, ensuring that the starting position of each pipe fitting is consistent, which greatly improves the accuracy and consistency of the pipe fitting cutting position. The top moving frame is horizontally driven by the first lead screw and connected to the displacement sensor. The operator can accurately control the position of the top moving frame according to the value fed back by the displacement sensor and the scale on the surface of the welding table. During batch cutting, it can ensure that the cutting length and height of each pipe fitting are consistent, avoiding errors caused by manual measurement and adjustment, and further improving the cutting accuracy.

[0014] In this invention, the equipment allows multiple pipe fittings of the same batch specifications to be placed side by side on the welding table for cutting. During the cutting process, through the coordinated movement of the top moving frame and the bottom moving frame, as well as the stable clamping of the pipe fittings by the first and second positioners, the positioning and cutting operations of multiple pipe fittings can be completed at one time, which greatly improves the processing efficiency. Attached Figure Description

[0015] Figure 1 This is a top view structural diagram of the present invention;

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

[0017] Figure 3 This is a partial structural diagram of the welding station of this utility model;

[0018] Figure 4 This is a schematic diagram of the top movable frame structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the cutting component structure of this utility model.

[0020] In the diagram: 1. Welding table; 2. Reference plate; 3. First cylinder; 4. Top moving frame; 5. Second cylinder; 6. First positioner; 7. First lead screw; 8. Second lead screw; 9. Bottom moving frame; 10. Third lead screw; 11. Cutting assembly; 12. Second positioner. Detailed Implementation

[0021] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1 to 5 This utility model provides a technical solution: a pipe cutting device with controllable length, including a welding table 1. A reference plate 2 is slidably connected to one end of the top of the welding table 1 via a slide rod. The top of the reference plate 2 is fixedly connected to the power output end of a first cylinder 3. A top moving frame 4 is provided on one side of the reference plate 2. A first positioner 6 is fixedly connected to the top moving frame 4 via a second cylinder 5. A first lead screw 7 is rotatably connected to one end of the welding table 1, and a slide rod is fixedly connected to the other end. One end of the top moving frame 4 is threaded to the outer wall of the first lead screw 7, and the other end is slidably connected to the outer wall of the slide rod. A second lead screw 8 is rotatably connected to the bottom of the welding table 1. Slide rods are fixedly connected to both ends of the second lead screw 8. A bottom moving frame 9 is slidably connected to the welding table 1 via the slide rod fixedly connected to its bottom. The second lead screw 8 passes through the bottom moving frame 9 and is threadedly connected to a through hole. A third lead screw 10 is rotatably connected to the inside of the bottom moving frame 9. A cutting component 11 is slidably connected to the top of the bottom moving frame 9. A second positioner 12 is fixedly connected to the top of the bottom moving frame 9.

[0023] In this embodiment, as Figure 3 As shown, the bottom of the reference plate 2 has a "T"-shaped protrusion, and the surface of the welding table 1 has a slot directly below the reference plate 2 for insertion and connection. Several perforated structures are distributed on one side of the welding table 1, communicating with the slot. A scale is marked on the top of the welding table 1, with the reference plate 2 located at the initial point of the scale. The insertion and connection of the reference plate 2 and the corresponding slot on the surface of the welding table 1 forms a stable and precise positioning structure. When placing the pipe fitting, the pipe end can be tightly fitted to one end of the reference plate 2, using the reference plate 2 as the zero-point positioning reference. This provides a unified and accurate starting reference point for determining the position of each component during subsequent cutting, greatly improving the accuracy and consistency of the pipe cutting position. This insertion structure provides reliable assurance for the cutting operation, avoiding the impact of reference plate 2 displacement on cutting quality. Furthermore, the perforated structures on the outside of the welding table 1 fully consider the use of cutting fluid later, allowing the cutting fluid to drain in time and preventing accumulation in the slot. This helps maintain the cleanliness of the connection between the reference plate 2 and the welding table 1, reducing the impact of impurities on positioning accuracy.

[0024] In this embodiment, as Figure 4 As shown, the top moving frame 4 forms a horizontal transmission structure on the surface of the welding table 1 via the first lead screw 7, and a displacement sensor is fixedly connected to one side of the outer wall of the welding table 1. The end of the displacement sensor with the pull rope head is fixedly connected to one side of the top moving frame 4. The displacement sensor can measure the displacement distance of the top moving frame 4 in real time and accurately. During the pipe cutting process, the operator can accurately control the movement position of the top moving frame 4 on the first lead screw 7 according to the required cutting length of the pipe through the value fed back by the displacement sensor, so as to ensure the accuracy of the cutting position, effectively improve the cutting accuracy, and reduce the cutting error and scrap rate caused by inaccurate positioning.

[0025] In this embodiment, as Figure 2 and Figure 4 As shown, the second lead screw 8 is vertically distributed with the first lead screw 7, and the cutting assembly 11 and the second positioner 12 move horizontally on one side of the welding table 1 by means of the bottom moving frame 9 and the helical transmission structure of the second lead screw 8. The second lead screw 8 and the third lead screw 10 can realize the precise positioning of the cutting assembly 11 and the second positioner 12 in the plane, so that the equipment can accurately move the cutting assembly 11 and the second positioner 12 to the designated position according to the requirements of different pipe lengths, cutting positions, etc., thereby improving the cutting precision and accuracy.

[0026] In this embodiment, as Figure 5 As shown, the cutting assembly 11 consists of a stand, a cutting blade, and a synchronizing element. One end of the stand is threaded to the outer wall of the third lead screw 10, forming a helical transmission structure. The cutting blade and the synchronizing element are rotatably connected between the inner wall of the stand of the cutting assembly 11. The synchronizing element consists of two upper and lower synchronizing pulleys and a toothed belt meshing with the two pulleys. The lower synchronizing pulley is coaxially connected to the cutting blade. With the transmission of the third lead screw 10, the cutting assembly 11 can not only cut multiple pipes, but also keep the cutting blade away from the surface of the welding table 1 when the equipment is not in use, providing significant safety for operators placing workpieces. The high-speed rotation of the cutting blade achieved by the synchronizing element makes the rotation smoother and reduces vibration caused by transmission errors.

[0027] In this embodiment, as Figure 2 and Figure 5As shown, both the first positioner 6 and the second positioner 12 consist of a top plate and a bottom plate. A screw is threadedly connected to the top of the top plate of the second positioner 12. The shaft of the screw passes through the top plate and is rotatably connected to the top of the bottom plate. By rotating the screw, the height of the bottom plate can be easily adjusted, which can conveniently adapt to pipe fittings of different diameters and ensure stable clamping and fixing of pipe fittings of different sizes. The first positioner 6 and the second positioner 12 can achieve uniform and stable clamping of the pipe fitting at different positions according to the specific situation of the pipe fitting through their respective adjustment methods, ensuring the positional accuracy and stability of the pipe fitting during the cutting process.

[0028] In this embodiment, as Figure 2 As shown, the base plates of the first locator 6 and the second locator 12 are both covered with rubber pads, and the surface of the rubber pads has a grid pattern. The rubber pads themselves have a certain degree of elasticity and stickiness, which can better fit the surface of the pipe. The grid pattern further increases the surface roughness, and the grid pattern can form a kind of "biting" effect on the surface of the pipe, which greatly increases the friction between the rubber pad and the pipe. In this way, when the first locator 6 and the second locator 12 clamp the pipe, they can fix the pipe more firmly and prevent the pipe from sliding or displacing due to external forces such as cutting force during the cutting process, thus ensuring the accuracy and quality of the cutting.

[0029] The usage method and advantages of this utility model: The working process of this length-controllable pipe cutting device is as follows:

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, first, turn on the equipment power. Place multiple pipe fittings of the same batch specifications to be processed side by side on the welding table 1. Use the first cylinder 3 to push the reference plate 2 down, so that the "T"-shaped protrusion on the bottom of the reference plate 2 is inserted into the corresponding slot on the surface of the welding table 1. At this time, the reference plate 2 is located at the initial point of the scale on the top of the welding table 1, which serves as a zero-point positioning function. Start the first lead screw 7 to rotate, driving the top moving frame 4 to move horizontally on the surface of the welding table 1 along the axis of the first lead screw 7. Since the displacement sensor with a pull rope head is fixedly connected to one side of the top moving frame 4, and the pull rope... The head position, the initial point of the scale, and the reference plate 2 are all on the same horizontal line. Therefore, when the top moving frame 4 moves, it will stretch the pull rope of the displacement sensor. The operator refers to the digital display device electrically connected to the displacement sensor and, in conjunction with the scale on the surface of the welding table 1, moves the top moving frame 4 to the appropriate position according to the specifications that the pipe needs to be cut. During this process, the scale can intuitively let the operator clearly understand the overall length of the pipe and the position that needs to be cut. When the top moving frame 4 reaches the determined position, the second cylinder 5 is activated to push the first positioner 6 down, using the rubber pad at the bottom plate of the first positioner 6 to secure it. The upper end of the pipe fitting is fixedly arranged on the welding table 1. At the same time, the bottom moving frame 9 moves to the top moving frame 4 by means of the second lead screw 8. During the movement of the bottom moving frame 9, the second positioner 12 fixedly connected to its top also moves. When the bottom moving frame 9 reaches the determined position, the screw threaded above the top plate of the second positioner 12 is rotated. By adjusting the screw, the rubber pad under the bottom plate of the second positioner 12 clamps the surface of the pipe fitting at the other end. The rubber pads at the bottom of the first positioner 6 and the second positioner 12 for clamping the pipe fitting are respectively connected by the second cylinder 5 and the screw. The rod is adjusted accordingly to accommodate workpieces of different pipe diameters. After the pipe is fixed, the third lead screw 10 is started, and the cutting assembly 11 gradually approaches the pipe. At the same time, the servo motor on the outside of the cutting assembly 11 frame is driven to achieve high-speed rotation of the cutting blade through the synchronization component. During cutting, external cutting fluid can be used simultaneously. After cutting, the first cylinder 3 is used to lift the reference plate 2. At this time, the material can be unloaded from the reference plate 2. Meanwhile, since the groove of the welding table 1 used to insert the reference plate 2 is connected to the microporous structure of the outer wall, even if cutting fluid is accidentally mixed in, it can be effectively discharged through these micropores.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pipe cutting apparatus with controllable length, comprising a welding station (1), characterized in that: The welding table (1) has a reference plate (2) slidably connected to one end of its top via a slide rod. The top of the reference plate (2) is fixedly connected to the power output end of the first cylinder (3). A top moving frame (4) is provided on one side of the reference plate (2). The top moving frame (4) is fixedly connected to a first positioner (6) via a second cylinder (5) provided thereon. The welding table (1) has a first lead screw (7) rotatably connected to one end of its interior and a slide rod fixedly connected to the other end. One end of the top moving frame (4) is threaded to the outer wall of the first lead screw (7) and the other end is slidably connected to the outside of the slide rod. The bottom of the welding table (1) is rotatably connected to a second lead screw (8), and the two ends of the second lead screw (8) are fixedly connected to slide rods. The welding table (1) is slidably connected to a bottom moving frame (9) through the slide rods fixedly connected to its bottom. The second lead screw (8) passes through the bottom moving frame (9) and is threadedly connected to the through hole opened therein. The bottom moving frame (9) is rotatably connected to a third lead screw (10). The top of the bottom moving frame (9) is slidably connected to a cutting assembly (11). The top of the bottom moving frame (9) is fixedly connected to a second positioner (12).

2. A length-controllable pipe cutting apparatus according to claim 1, wherein: The bottom of the reference plate (2) has a "T"-shaped protrusion, and the surface of the welding table (1) has a slot for insertion and connection directly below the reference plate (2). Several hole-like structures that communicate with the slot are distributed on one side of the outside of the welding table (1). At the same time, a scale is marked on the top of the welding table (1), and the reference plate (2) is located at the initial point of the scale.

3. A length-controllable pipe cutting apparatus according to claim 1, wherein: The top moving frame (4) forms a horizontal transmission structure on the surface of the welding table (1) through the first lead screw (7), and a displacement sensor is fixedly connected to one side of the outer wall of the welding table (1), and one end of the displacement sensor with a pull rope head is fixedly connected to one side of the top moving frame (4).

4. The pipe cutting equipment with controllable length according to claim 1, characterized in that: The second lead screw (8) is vertically distributed between the first lead screw (7), and the cutting assembly (11) and the second positioner (12) move horizontally on one side of the welding table (1) by means of the helical transmission structure of the bottom moving frame (9) and the second lead screw (8).

5. A length-controllable pipe cutting apparatus according to claim 1, wherein: The cutting assembly (11) consists of a stand, a cutting blade and a synchronizing element. One end of the stand is threaded to the outer wall of the third lead screw (10) and forms a helical transmission structure with it. The cutting blade and the synchronizing element are rotatably connected between the inner walls of the stand of the cutting assembly (11). The synchronizing element consists of two upper and lower synchronizing wheels and a toothed belt meshing with the outside of the two synchronizing wheels. The lower synchronizing wheel is coaxially connected with the cutting blade.

6. A length-controllable pipe cutting apparatus according to claim 1, wherein: The first positioner (6) and the second positioner (12) are both composed of a top plate and a bottom plate. The top plate of the second positioner (12) is threaded with a screw rod, the shaft of which passes through the top plate and is rotatably connected to the top of the bottom plate.

7. A length-controllable pipe cutting apparatus according to claim 1, wherein: The base plates of the first positioner (6) and the second positioner (12) are both covered with rubber pads, and the surface of the rubber pads has a grid pattern.

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