A hose cutting machine

Abstract

The present application belongs to the technical field of rubber pipe cutting processing, and discloses a rubber pipe cutting machine, which comprises a cutter rotating frame and clamping mechanisms symmetrically matched on both sides of the cutter rotating frame; the clamping mechanisms comprise a negative suction sleeve capable of penetrating the rubber pipe, a guide sleeve coaxially matched with the outside of the negative suction sleeve, and a negative suction generator, and the negative suction generator is located at the outer end of the guide sleeve in the axial direction; the cutter rotating frame is coaxially sleeved on the outside of the guide sleeve, and a cutting cutter is connected to the cutter rotating frame through an extension piece; the cutting cutter comprises a cutter seat and a cutting cutter disc rotatably installed in the cutter seat; the inner end of the guide sleeve is provided with a spiral guide groove, and the outside of the cutter seat is fixedly provided with a sliding rod slidingly extending into the spiral guide groove. In summary, the present application adopts the negative suction fixation and spiral centripetal cutting mode to reduce the radial deformation of the rubber pipe during actual cutting, thereby effectively improving the flatness of the rubber pipe cutting end face.

Description

Technical Field

[0001] This invention belongs to the field of hose cutting and processing technology, and specifically relates to a hose cutting machine. Background Technology

[0002] Rubber hoses primarily refer to pipes made of rubber materials, commonly used for gas transportation, cable protection, liquid storage, and noise reduction. Currently, rubber hose manufacturing often employs a one-piece extrusion molding process. Therefore, in actual use, rubber hoses need to be welded or cut according to the required length. When cutting rubber hoses, for example... Figure 1 As shown: First, the rubber tube is fixed in the clamp, which forms a clamping constraint from the outside of the rubber tube. Then, the rubber tube is squeezed and cut by a cutting disc set on one side of the clamp. However, the rubber tubes made of existing rubber materials usually have a certain degree of flexibility / elastic deformation ability. Therefore, they are very easy to deform when squeezed by the cutting disc, especially for thin-walled rubber tubes, where the degree of deformation is particularly obvious, which in turn affects the flatness of the cut end of the rubber tube. Summary of the Invention

[0003] In view of this, in order to solve the problems mentioned in the background art, the object of the present invention is to provide a hose cutting machine.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A hose cutting machine includes a tool rotating frame and clamping mechanisms symmetrically fitted on both sides of the tool rotating frame;

[0006] The clamping mechanism includes a negative suction sleeve that can pass through the tubing and a guide sleeve and a negative suction generator that are coaxially fitted to the outside of the negative suction sleeve, and the negative suction generator is located at the outer end of the guide sleeve along the axial direction.

[0007] The tool rotating frame is coaxially sleeved outside the guide sleeve, and a cutting tool is connected to the tool rotating frame via a telescopic component;

[0008] The cutting tool includes a tool holder and a cutting disc rotatably mounted within the tool holder;

[0009] The inner end of the guide sleeve is provided with a spiral guide groove, and a sliding rod that slides into the spiral guide groove is fixed on the outer side of the tool holder.

[0010] Preferably, the negative suction sleeve includes a porous inner plate and a flow guide outer plate fixed to the outside of the porous inner plate, and a negative suction clamping cavity is formed between the flow guide outer plate and the porous inner plate.

[0011] Preferably, the clamping mechanism further includes a damping rotatable guide sleeve disposed between the outer guide plate and the negative suction generator, and both the guide sleeve and the outer guide plate are provided with guide holes.

[0012] Preferably, an extension is formed on the outer side of the flow guide sleeve between the guide sleeve and the negative suction generator, and a rotatable one-way ratchet is provided between the extension and the tool rotating frame.

[0013] Preferably, the telescopic component includes a telescopic outer tube and a telescopic inner tube that are respectively connected to the tool rotating frame and the tool holder.

[0014] Preferably, the telescopic outer tube slides through the tool rotating frame, and a limit spring is connected between the telescopic outer tube and the tool rotating frame.

[0015] Preferably, two toothed sleeves are symmetrically slidably connected on the outside of the tool rotating frame, and the two toothed sleeves are provided with an inclined surface that cooperates with the telescopic outer tube at the close end of each toothed sleeve.

[0016] Preferably, both ends of the tool rotating frame are connected to the two toothed sleeves by elastic telescopic rods.

[0017] Preferably, the clamping mechanism further includes a support plate, and the negative suction sleeve and the negative suction generator are both fixed to one side of the support plate, while the guide sleeve is fixed to the outside of the guide plate; the support plate is also provided with a rotatable drive gear shaft, and the drive gear shaft meshes with the outside of the gear sleeve.

[0018] Preferably, an axial through hole that does not interfere with the flow guide hole is provided on the outer guide plate, and a flow guide ring communicating with the axial through hole is fixed at the outer end of the outer guide plate. A filter, a flue gas purifier and an air pump are sequentially connected to the outside of the flow guide ring through a conduit.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] (1) In this invention, two negative suction sleeves are symmetrically distributed on both sides of the cutting blade to form a negative suction fixation on the outside of the tube, thereby effectively reducing the deformation caused when the cutting blade disc comes into contact with the tube; in addition, this invention utilizes the rotation of the blade rotating frame to enable the cutting blade to gradually approach the tube along the spiral guide groove on the guide sleeve, thereby using a spiral centripetal cutting method instead of the traditional single-sided extrusion cutting, thereby further avoiding tube deformation and ensuring a flat cutting end face.

[0021] (2) Set up a flow guide sleeve to separate the negative suction sleeve and the negative suction generator, and adjust the connection state between the negative suction sleeve and the negative suction generator based on the flow guide sleeve, so as to facilitate the feeding of the hose and the cutting and fixing of the hose.

[0022] (3) By setting an extension and a one-way ratchet, the tool rotating frame and the flow guide sleeve cooperate to form an internal friction one-way ratchet mechanism. Thus: when the tool rotating frame rotates alone, the flow guide sleeve keeps the negative suction sleeve connected to the negative suction generator, thereby achieving stable cutting of the hose; when the tool rotating frame and the flow guide sleeve rotate together, the cutting tool is reset, and at the same time the flow guide sleeve disconnects the connection between the negative suction sleeve and the negative suction generator, thereby achieving feeding of the cut hose.

[0023] (4) Two toothed sleeves that can slide relative to each other are set on the outside of the tool rotating frame. On the one hand, the rotation drive of the entire tool rotating frame is realized by meshing with the drive tooth shaft. On the other hand, the rotation position of the current guide sleeve is marked and positioned by cooperating with the telescopic part and the cutting tool, so as to accurately realize the feeding or fixing of the hose.

[0024] (5) By setting an axial through hole in the negative suction sleeve, the cutting area between the two negative suction sleeves is connected with the filter and the flue gas purifier, so as to effectively realize the waste gas treatment during the hose cutting process. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of an existing hose cutting device;

[0026] Figure 2 This is an exploded view of the hose cutting machine of the present invention;

[0027] Figure 3 This is a cross-sectional view of the hose cutting machine of the present invention;

[0028] Figure 4 for Figure 3 Enlarged view of point A in the image;

[0029] Figures 5-6 This is a cross-sectional view of the negative suction sleeve in this invention;

[0030] Figure 7 This is a schematic diagram of the guide sleeve in this invention;

[0031] Figure 8 This is a cross-sectional view of the assembly of the flow guide sleeve and the tool rotating frame in this invention;

[0032] Figure 9 This is a schematic diagram of the cutting tool in this invention;

[0033] In the diagram: Tool rotating frame - 100; Clamping mechanism - 200; Negative suction sleeve - 210; Porous inner plate - 211; Flow guide outer plate - 212; Guide sleeve - 220; Spiral guide groove - 221; Negative suction generator - 230; Flow guide partition sleeve - 240; One-way ratchet - 241; Support plate - 250; Cutting tool - 300; Tool holder - 301; Cutting blade disc - 302; Slide rod - 303; Telescopic outer tube - 304; Telescopic inner tube - 305; Limiting spring - 306; Tooth sleeve - 400; Elastic telescopic rod - 401; Flow guide ring - 500; Filter - 600; Flue gas purifier - 700; Air pump - 800. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0035] like Figure 2 and Figure 3 As shown, the hose cutting machine provided by the present invention mainly includes a tool rotating frame 100 and clamping mechanisms 200 symmetrically matched on both sides of the tool rotating frame 100.

[0036] The first part involves clamping and fixing the rubber tube using the clamping mechanism 200.

[0037] Continue to refer to Figure 2 and Figure 3 As shown, the clamping mechanism 200 provided by the present invention specifically includes a support plate 250, a negative suction sleeve 210 and a negative suction generator 230 fixed to one side of the support plate 250. (Specifically combined with...) Figure 3 It can be seen that the negative suction generator 230 is coaxially fitted to the outside of the negative suction sleeve 210. The negative suction generator 230 is used to provide negative suction power to the negative suction sleeve 210, and a separation gap is reserved between the negative suction generator 230 and the negative suction sleeve 210. At the same time, a rotatable and adjustable guide sleeve 240 is provided in the separation gap. In addition, a guide sleeve 220 is also fitted and fixed on the outside of the negative suction sleeve 210. Referring to the figure of the present invention, for the two symmetrically fitted clamping mechanisms 200, the end that is closer to each other is set as the inner end, and the end that is farther away from each other is set as the outer end. Based on this, the outer ends of the negative suction sleeve 210 and the negative suction generator 230 are both fixed to the support plate 250, while the guide sleeve 220 is fitted to the inner end of the negative suction sleeve 210, and the guide sleeves 220 in the two clamping mechanisms 200 are coaxially fitted inside the tool rotating frame 100.

[0038] Further reference Figure 5 and Figure 6 As shown, the negative suction sleeve 210 includes a porous inner plate 211 and a flow guide outer plate 212 fixed to the outside of the porous inner plate 211. A negative suction cavity is formed between the flow guide outer plate 212 and the porous inner plate 211. Flow guide holes are provided on both the flow guide sleeve 240 and the flow guide outer plate 212. It can be seen that when the flow guide hole on the flow guide sleeve 240 is connected to the flow guide hole on the flow guide outer plate 212 based on the rotation adjustment of the flow guide sleeve 240, the connection between the negative suction generator 230 and the negative suction cavity (inside the negative suction sleeve 210) is realized. At this time, the activation of the negative suction generator 230 can make the inside of the negative suction cavity and the inside of the porous inner plate 211 form a negative pressure state. When the flow guide hole on the flow guide sleeve 240 is misaligned with the flow guide hole on the flow guide outer plate 212, the negative suction clamp cavity cannot connect with the negative suction generator 230, and the entire negative suction sleeve 210 returns to the normal pressure state.

[0039] In summary, based on the above-described structure, the hose cutting machine of the present invention specifically utilizes the negative suction sleeves 210 on both sides of the blade rotating frame 100 to achieve fixed positioning during hose cutting:

[0040] Hose feeding: The rotation of the guide sleeve 240 prevents the negative suction generator 230 from communicating with the negative suction sleeve 210. At this time, the entire negative suction sleeve 210 is under normal pressure, allowing the hose to move freely inside the negative suction sleeve 210 (in the illustrations of this invention, the hose can move along...). Figure 1 Feeding direction indicated by the middle arrow);

[0041] Hose fixing: After feeding the hose according to the actual required cutting length, the negative suction generator 230 is connected to the negative suction sleeve 210 by rotating the guide sleeve 240. At this time, under the operation of the negative suction generator 230, the entire negative suction sleeve 210 generates a negative suction effect on the hose inside, thereby making the hose tightly and stably fit on the inner wall of the negative suction sleeve 210, thus realizing hose positioning and effectively preventing hose deformation under pressure.

[0042] Part Two: Cutting and fixing the tubing:

[0043] Combination Figure 2 , Figure 3 and Figure 9 As shown, a cutting tool 300 is connected to the tool rotating frame 100 via a telescopic member, and the cutting tool 300 includes a tool holder 301 and a cutting disc 302 rotatably mounted in the tool holder 301. The telescopic member includes a telescopic outer tube 304 and a telescopic inner tube 305 that are respectively connected to the tool rotating frame 100 and the tool holder 301.

[0044] Combination Figure 7As shown, the inner end of the guide sleeve 220 is provided with a spiral guide groove 221, and a sliding rod 303 is fixed on the outer side of the tool holder 301, slidingly extending into the spiral guide groove 221. Therefore, based on the sliding limitation of the spiral guide groove 221 and the sliding rod 303, the tool holder 301 can spirally approach the rubber tube fixed in the negative suction sleeve 210 along the spiral guide groove 221 while rotating with the tool rotating frame 100. See details. Figure 3 As shown, in order to ensure that the cutting tool 300 can be effectively installed between the two guide sleeves 220, a certain installation gap is reserved between the two guide sleeves 220, and preferably the inner end of the guide sleeve 220 is flush with the inner end of the negative suction sleeve 210. Based on this, the installation gap is the processing area in the hose cutting process.

[0045] In summary, based on the above-described structure, the hose cutting machine of the present invention specifically utilizes a cutting blade 300 capable of spiral centripetal motion to achieve hose cutting:

[0046] When cutting the hose:

[0047] Ensure that the negative suction generator 230 is connected to the negative suction sleeve 210;

[0048] The tool rotator 100 is driven by an external drive structure; see reference for details. Figure 2 , Figure 3 and Figure 4 As shown, a toothed sleeve 400 is sleeved on the outside of the tool rotating frame 100, and a rotatable drive gear shaft (which can be driven to rotate by a motor fixed on the support plate 250) is provided on the support plate 250. The drive gear shaft meshes with the outside of the toothed sleeve 400, thereby realizing the rotation of the tool rotating frame 100 under the drive of the motor and the meshing transmission between the drive gear shaft and the toothed sleeve 400.

[0049] The tool holder 301 is connected to the tool rotating frame 100 via a telescopic component. Therefore, the tool rotating frame 100 can drive the tool holder 301 to rotate synchronously. Specifically, the tool holder 301 rotates around the central axis of the guide sleeve 220. Due to the sliding limitation between the spiral guide groove 221 and the slide rod 303, the tool holder 301 moves spirally towards the tube fixed in the negative suction sleeve 210 along the spiral guide groove 221 (the telescopic component gradually extends). At the same time, it drives the cutting disc 302 inside the tool holder 301 to rotate (which can be driven by a motor installed in the tool holder 301). Thus, the spiral cutting of the tube can be completed while moving spirally towards the center.

[0050] After cutting:

[0051] The rotating guide sleeve 240 prevents the negative suction generator 230 from communicating with the negative suction sleeve 210, thereby enabling the hose to be fed and continuously cut.

[0052] In this embodiment, the rotary cutting of the tool rotating holder 100 and the rotary adjustment of the flow guide sleeve 240 can be driven by two different drive structures. Furthermore, this invention employs a helical, centripetal cutting method, compared to... Figure 1 As shown in the unilateral cut, the cutting pressure on the hose during cutting is changed from radial force to tangential force on the hose surface, which can further prevent hose deformation. Example

[0053] like Figure 2 and Figure 3 As shown, the hose cutting machine provided by the present invention mainly includes a tool rotating frame 100 and clamping mechanisms 200 symmetrically matched on both sides of the tool rotating frame 100.

[0054] Regarding the cooperation between the tool rotating frame 100 and the clamping mechanism 200, this embodiment adopts the same negative suction fixing and spiral centripetal cutting as in the first embodiment above. The improvement of this embodiment is that by optimizing the cooperation structure between the flow guide sleeve 240 and the tool rotating frame 100, the flow guide sleeve 240 and the tool rotating frame 100 can complete the rotation drive respectively based on the same drive structure.

[0055] like Figure 3 , Figure 4 and Figure 8 As shown, an extension is formed on the outer side of the flow guide sleeve 240 between the guide sleeve 220 and the negative suction generator 230, and a rotatable one-way ratchet 241 is provided between the extension and the tool rotating frame 100, thereby forming an internal friction one-way ratchet mechanism by combining the flow guide sleeve 240, the one-way ratchet 241 and the tool rotating frame 100 (wherein the flow guide sleeve 240 is preferably damped and rotated between the negative suction generator 230 and the negative suction sleeve 210).

[0056] In summary, in this embodiment:

[0057] When the drive gear shaft is driven to rotate by the motor, and drives the gear sleeve 400 and the tool rotating frame 100 to rotate clockwise, the combination... Figure 8 As shown, in this state, only the tool rotating frame 100 rotates independently, thereby driving the cutting tool 300 to spiral towards the center and approach the rubber tube, and complete the cutting.

[0058] When the drive gear shaft is driven to rotate by the motor, and drives the gear sleeve 400 and the tool rotating head 100 to rotate counterclockwise, the combination... Figure 8 As shown, in this state, the tool rotating frame 100 will drive the flow guide sleeve 240 to rotate synchronously through the engagement of the one-way ratchet 241. This achieves the rotational reset of the cutting tool 300 after cutting, and the rotational adjustment of the flow guide sleeve 240.

[0059] Furthermore, to accurately determine the current rotational position of the guide sleeve 240, it is preferable to set the telescopic outer tube 304 to slide through the tool rotating frame 100, and to connect a limit spring 306 between the telescopic outer tube 304 and the tool rotating frame 100. Additionally, two toothed sleeves 400 are symmetrically arranged on the outer side of the tool rotating frame 100, and elastic telescopic rods 401 are connected between both ends of the tool rotating frame 100 and the two toothed sleeves 400. The ends of the two toothed sleeves 400 that are close to each other are provided with inclined surfaces that cooperate with the telescopic outer tube 304. Therefore:

[0060] During the rotation of the guide sleeve 240 and the tool rotating frame 100 to achieve the rotational reset of the cutting tool 300, the cutting tool 300 gradually moves away from the hose along the spiral guide groove 221, causing the telescopic component to gradually retract. Specifically, when the telescopic inner tube 305 is completely retracted into the telescopic outer tube 304, the entire telescopic component is at its shortest length. In this state, if the cutting tool 300 continues to spiral away from the hose, the telescopic outer tube 304 will extend outside the tool rotating frame 100 under the push of the tool holder 301 and the telescopic inner tube 305, compressing the limiting spring 306 and driving the two toothed sleeves 400 to separate axially through the engagement of the inclined plane, specifically forming... Figure 4 The state shown. (As indicated) Figure 4 As shown, when the top of the telescopic outer tube 304 does not protrude beyond the outer edge of the toothed sleeve 400 (it is just flush), it indicates that the guide hole on the guide sleeve 240 is misaligned with the guide hole on the guide outer plate 212 in the current state. That is, the negative suction generator 230 and the negative suction sleeve 210 are separated and blocked by the guide sleeve 240. At this time, the negative suction sleeve 210 is in a normal pressure state, which facilitates the movement of the hose after cutting. At the same time, the cutting tool 300 also completes a certain degree of reset and will not interfere with the feeding of the hose.

[0061] After the hose feeding movement is completed, the tool rotating frame 100 and the flow guide sleeve 240 continue to rotate counterclockwise together until the slide rod 303 slides to the outermost end of the spiral guide groove 221. At this time, the flow guide hole on the flow guide sleeve 240 is connected to the flow guide hole on the flow guide outer plate 212. That is, under the drive of the negative suction generator 230, the negative suction sleeve 210 restores the negative suction fixing effect. At this time, the tool rotating frame 100 can be driven to rotate clockwise independently to perform the next continuous cut.

[0062] In summary, by using the forward and reverse drive of the motor, the independent rotation of the tool rotating frame 100 or the joint rotation of the tool rotating frame 100 and the guide sleeve 240 can be realized, thereby effectively realizing hose cutting under negative suction fixation or hose feeding under normal pressure. Example

[0063] like Figure 2 and Figure 3As shown, the hose cutting machine provided by the present invention mainly includes a tool rotating frame 100 and clamping mechanisms 200 symmetrically matched on both sides of the tool rotating frame 100.

[0064] Regarding the cooperation between the tool rotating frame 100 and the clamping mechanism 200, this embodiment adopts the same negative suction fixing, spiral centripetal cutting, and rotary drive as in Embodiment 2 above. Furthermore, the improvement of this embodiment lies in: optimizing the structure of the negative suction sleeve 210 to achieve dust and smoke treatment in the hose cutting processing area (located between the two negative suction sleeves 210).

[0065] like Figure 6 As shown, an axial through hole that does not interfere with the flow guide hole is provided on the outer guide plate 212, specifically in conjunction with... Figure 3 It can be seen that one end of the axial through hole is connected to the machining area between the two negative suction sleeves 210.

[0066] Further as Figure 2 and Figure 3 It is known that a guide ring 500 communicating with the axial through hole is fixed at the outer end of the guide plate 212. The guide ring 500 is connected to a filter 600, a flue gas purifier 700 and an air pump 800 in sequence through a conduit.

[0067] In summary, in this embodiment, when the cutting tool 300 performs helical centripetal cutting as the tool rotating frame 100 rotates, a certain amount of dust will be generated due to the friction between the cutting disc 302 and the hose. At this time, the vacuum pump 800 is started to extract the dust in the processing area between the two negative suction sleeves 210 through the axial through hole, and then pass through the filter 600 and the flue gas purifier 700 in sequence for dust filtration and flue gas purification, thereby effectively realizing the treatment of waste gas in the hose cutting process.

[0068] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hose cutting machine, characterized in that: It includes a tool rotating frame (100) and clamping mechanisms (200) symmetrically fitted on both sides of the tool rotating frame (100). The clamping mechanism (200) includes a negative suction sleeve (210) through which the tubing can pass, and a guide sleeve (220) and a negative suction generator (230) coaxially fitted to the outside of the negative suction sleeve (210), and the negative suction generator (230) is located at the outer end of the guide sleeve (220) along the axial direction; The tool rotating frame (100) is coaxially sleeved on the outside of the guide sleeve (220), and the cutting tool (300) is connected to the tool rotating frame (100) through a telescopic member. The cutting tool (300) includes a tool holder (301) and a cutting disc (302) rotatably mounted in the tool holder (301). The inner end of the guide sleeve (220) is provided with a spiral guide groove (221), and a slide rod (303) is fixed on the outside of the tool holder (301) and slides into the spiral guide groove (221). The negative suction sleeve (210) includes a porous inner plate (211) and a flow guide outer plate (212) fixed to the outside of the porous inner plate (211), and a negative suction clamping cavity is formed between the flow guide outer plate (212) and the porous inner plate (211); The clamping mechanism (200) further includes a damping rotatable guide sleeve (240) sleeved between the guide outer plate (212) and the negative suction generator (230), and both the guide sleeve (240) and the guide outer plate (212) are provided with guide holes; an extension is formed on the outside of the guide sleeve (240) between the guide sleeve (220) and the negative suction generator (230), and a rotatable one-way ratchet (241) is provided between the extension and the tool rotating frame (100). The telescopic component includes a telescopic outer tube (304) and a telescopic inner tube (305) connected to the tool rotating frame (100) and the tool holder (301) respectively; the telescopic outer tube (304) slides through the tool rotating frame (100), and a limit spring (306) is connected between the telescopic outer tube (304) and the tool rotating frame (100); two toothed sleeves (400) are symmetrically and slidably connected on the outside of the tool rotating frame (100), and the two toothed sleeves (400) are provided with inclined surfaces that cooperate with the telescopic outer tube (304) at their close ends; elastic telescopic rods (401) are connected between both ends of the tool rotating frame (100) and the two toothed sleeves (400).

2. The hose cutting machine according to claim 1, characterized in that: The clamping mechanism (200) also includes a support plate (250), and the negative suction sleeve (210) and the negative suction generator (230) are both fixed on one side of the support plate (250), while the guide sleeve (220) is fixed to the outside of the guide outer plate (212); the support plate (250) is also provided with a rotatable drive gear shaft, and the drive gear shaft meshes with the outside of the gear sleeve (400).

3. The hose cutting machine according to claim 2, characterized in that: An axial through hole that does not interfere with the flow guide hole is provided on the outer guide plate (212), and a flow guide ring (500) that communicates with the axial through hole is fixed at the outer end of the outer guide plate (212). A filter (600), a flue gas purifier (700) and an air pump (800) are sequentially connected to the outside of the flow guide ring (500) through a conduit.

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