Feeding chuck for laser pipe cutting

Abstract

The utility model provides a laser pipe cutting feeding chuck which comprises a machine frame, a main shaft rotatably arranged in the machine frame, a rotation driving mechanism arranged on the machine frame and used for driving the main shaft to rotate, a shell fixedly connected with the main shaft, a front cover fixedly arranged at the front end of the shell, an inner piston and an outer piston, the transverse clamping jaws and the vertical clamping jaws are correspondingly driven by the inner piston and the outer piston through two sets of transmission mechanisms respectively; the three-way air pressure gyrator is internally provided with two power air passages and a chip blowing air passage and is fixedly connected with the main shaft in an airtight manner; the two power air passages and the chip blowing air passage of the three-way air pressure gyrator are respectively communicated with the main shaft, the two power air passages in the shell and the chip blowing air passage in the chuck; the transmission mechanism comprises a lever and a power wedge block. Through the improvement of the structure, the problems that an O-shaped sealing ring of an existing similar chuck is prone to abrasion and difficult to replace can be effectively solved, the stroke of the clamping jaws can be enlarged by nearly one time, and therefore the cost performance of the chuck is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to laser pipe cutting chuck technical field, concretely relates to a kind of laser pipe cutting feeding chuck. BACKGROUND

[0002] On laser pipe cutting production line, it is generally necessary to utilize respectively located one each in front and back two sides chuck to carry out the clamping and movement of pipe material to be cut and processed, for laser cutting head to cut and process. Among them, the chuck located in front side is generally called front card in industry, the chuck located in back side is generally called tail card in industry, when using, the pipe material to be processed is clamped by front card and tail card, tail card continuously pushes the pipe material to be processed to front card to supply laser cutting head to cut and process, so tail card is also called feeding chuck in industry. The structure of currently commonly used tail card is as shown in Figure 1 And Figure 2 It includes rack 1, main shaft 2 rotatably arranged in rack 1 through bearing 21, rotating drive mechanism 3 arranged on rack 1 for driving main shaft 2 to rotate, shell 4 fixedly connected with main shaft 2, front cover 5 fixedly arranged on the front end of shell 4, inner piston 6 and outer piston 7 arranged in shell 4, a pair of transverse and a pair of vertical clamping jaws 9 driven by inner piston 6 and outer piston 7 respectively through two sets of transmission mechanism 8. Transmission mechanism 8 includes large gear 81 and small gear 82 rotatably arranged in shell and meshed with each other, and rack 83 meshed with small gear 82. Blow-off scrap gas passage for blowing off scrap produced during cutting and processing when using is arranged through from back to front in tail card, blow nozzle 31 is arranged on rotating drive mechanism 3 and is in air connection with blow-off scrap gas passage, clamping nozzle 11 and opening nozzle 12 are arranged on rack 1, clamping nozzle 11 and opening nozzle 12 are respectively in air control inner piston 6 and outer piston 7 to extend and retract through two power gas passages communicated by gas passage on rack 1, gas passage on main shaft 2 and gas passage on shell 4, so as to control clamping jaw 9 to clamp and open correspondingly. Three O-shaped sealing rings 13 are arranged on rack 1 and matched with two power gas passages. The technical problems existing in the prior art of such tail card are: first, the O-shaped sealing ring 13 arranged in the rack 1 and located outside the main shaft 2 is larger, the linear speed of the main shaft 2 rotating on the O-shaped sealing ring 13 is larger in actual use in production practice, so that the O-shaped sealing ring 13 is easy to wear, and it often needs to be replaced, since the installation structure of the O-shaped sealing ring 13 determines that it needs to be disassembled as a whole when replaced, it is time-consuming and laborious, and it seriously affects the production efficiency of the laser cutting production line; second, transmission mechanism 8 adopts gear and rack transmission structure, due to the limitation of structure, the stroke of single clamping jaw is generally about 15mm, and the smaller clamping jaw stroke limits the outer diameter of the pipe material that can be clamped by the chuck, thereby affecting the performance-price ratio of the chuck. UTILITY MODEL CONTENTS

[0003] The utility model aims at: for solving the problems in prior art, provide a kind of structure improved laser pipe cutting feeding chuck.

[0004] The utility model discloses a technical scheme: the utility model discloses laser pipe cutting feeding chuck, including frame, the main shaft of bearing rotatablely being located in the frame, be located on the frame for driving the rotation of main shaft's rotation drive mechanism, with the fixed connection of main shaft's shell, the front cover of fixedly being located in the front end of shell, the inner piston and the outer piston of being located in the shell, be located in the front side of front cover and by the inner piston and the outer piston each through two groups of transmission mechanism corresponding drive a pair of horizontal clamping jaw and a pair of vertical clamping jaw, the main shaft and the shell are equipped with two power air passages for driving the inner piston and the outer piston to make the high pressure air pass through the extension and retraction movement, and its structural characteristics are: still include the three-way gas pressure rotator for inputting high pressure air when using, above-mentioned three-way gas pressure rotator with the airtight fixed connection of main shaft, and three-way gas pressure rotator with the two power air passages in main shaft and shell air.

[0005] Further scheme is: above-mentioned three-way gas pressure rotator includes the shell, the rear cover of bolt detachably fixedly being located in the rear end of shell, the core rod of bearing rotatably being located in the shell and the rear cover, be equipped with the clamping gas hole and the opening gas hole for inputting high pressure air when using on the shell, be equipped with three sealing rings for airtight seal in the shell, be equipped with two power air passages in the core rod respectively with the airtight connection of clamping gas hole and opening gas hole on the shell, above-mentioned three-way gas pressure rotator by the airtight fixed connection of the front end of its core rod and the rear end of main shaft, and the two power air passages in the core rod with the two power air passages in main shaft corresponding air.

[0006] Further scheme is: above-mentioned laser pipe cutting feeding chuck is equipped with scrap blowing gas passage, the rear cover of above-mentioned three-way gas pressure rotator is equipped with scrap blowing gas hole for inputting high pressure air when using, the scrap blowing gas channel of core rod is equipped with the airtight connection of scrap blowing gas hole of rear cover, and the scrap blowing gas channel in the core rod with the scrap blowing gas passage in laser pipe cutting feeding chuck air.

[0007] Further scheme is: above-mentioned three-way gas pressure rotator still includes the fixed frame of allocation, the rear cover of fixed frame's one side with three-way gas pressure rotator is fixedly connected, and the other side of fixed frame with frame is fixedly connected.

[0008] Further scheme is: above-mentioned transmission mechanism includes lever and power wedge, and transmission mechanism is equipped with four sets, and one end of lever of two sets of transmission mechanism is respectively with the transmission connection of inner piston, and the other end is respectively with the transmission connection of one power wedge that can be movably located on the front cover, and each power wedge is fixedly provided with one horizontal clamping jaw, and one end of lever of two sets of transmission mechanism is respectively with the transmission connection of outer piston, and the other end is respectively with the transmission connection of one power wedge that can be movably located on the front cover, and each power wedge is fixedly provided with one vertical clamping jaw.

[0009] This utility model has the following positive effects: (1) By setting a three-channel pneumatic rotary device as the input component for the high-pressure air required for operation, this utility model eliminates the air nozzle, air passage, and O-ring seal on the frame and the air blowing nozzle on the rotating mechanism in the prior art. This effectively solves the technical problems in the prior art where the O-ring seal is easily worn, needs to be replaced frequently, and the chuck needs to be completely disassembled when replacing the O-ring seal, which is time-consuming and laborious and seriously affects the production efficiency of the laser cutting production line. (2) This utility model changes the transmission mechanism of the existing chuck, which is composed of a large gear, a small gear, and a rack, to a transmission mechanism composed of a lever and a power wedge. Under the premise of the same external dimensions, the single claw stroke of the chuck claw is increased by about 100%. Correspondingly, the maximum external dimension of the workpiece that can be clamped during use can be increased by about 100%. Thus, this utility model has a significantly improved cost performance compared to the existing chucks. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of a laser tube cutting and feeding chuck commonly used in existing technologies;

[0011] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure along the axis;

[0012] Figure 3 This is a schematic diagram of the structure of this utility model;

[0013] Figure 4 for Figure 3 Top view;

[0014] Figure 5 for Figure 3 Sectional view along axis AA;

[0015] Figure 6 for Figure 4 BB-direction sectional view;

[0016] Figure 7 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 8 To and Figure 7 Schematic diagram of the three-dimensional structure of this utility model from different viewing angles;

[0018] Figure 9 for Figure 7 A three-dimensional structural diagram of a three-channel pneumatic rotary device;

[0019] Figure 10 To and Figure 9 Schematic diagram of the three-way pneumatic rotary device from different viewing angles;

[0020] Figure 11 For Figure 7 The cross-sectional structure schematic diagram of the three-way gas pressure rotator.

[0021] The reference signs in the above drawings are as follows:

[0022] Frame 1, clamping air nozzle 11, opening air nozzle 12, O-shaped sealing ring 13; main shaft 2, bearing 21; rotary drive mechanism 3, blowing nozzle 31; shell 4; front cover 5; inner piston 6; outer piston 7; transmission mechanism 8, large gear 81, small gear 82, rack 83, lever 84, power wedge 85; clamping jaw 9; three-way gas pressure rotator 100, shell 101, clamping air hole 101-1, opening air hole 101-2, rear cover 102, blowing chip air hole 102-1, core rod 103, first power air duct 103-1, second power air duct 103-2, blowing chip air duct 103-3, mounting bearing 104, sealing ring 105, fixing frame 106. DETAILED DESCRIPTION

[0023] The utility model will be explained in further detail below in combination with the drawings and specific embodiments.

[0024] (Example 1)

[0025] See Figures 3 to 8 The laser pipe cutting feeding chuck of the embodiment mainly comprises a frame 1, a main shaft 2, a rotary drive mechanism 3, a shell 4, a front cover 5, an inner piston 6, an outer piston 7, a transmission mechanism 8, a clamping jaw 9 and a three-way gas pressure rotator 100.

[0026] The frame 1 serves as the installation base of the chuck, the main shaft 2 is rotatably arranged in the frame 1 through a matched bearing 21, the rotary drive mechanism 3 is arranged on the frame 1 and is in transmission connection with the main shaft 2 for driving the main shaft 2 to rotate, the shell 4 is fixedly connected with the front end of the main shaft 2 (the side where the clamping jaw 9 is located is the front), the front cover 5 is fixedly arranged at the front end of the shell 4, the inner piston 6 and the outer piston 7 are both arranged in the shell 4, and the inner piston 6 and the outer piston 7 are respectively driven by two sets of transmission mechanisms 8 to correspondingly drive a pair of horizontally arranged clamping jaws 9 and a pair of vertically arranged clamping jaws 9. Two power air ducts are arranged on the main shaft 2 and the shell 4 for the high-pressure air to pass through so as to drive the inner piston 6 and the outer piston 7 to extend and retract, thereby correspondingly controlling the clamping and opening of the horizontally arranged clamping jaws 9 and the vertically arranged clamping jaws 9. A blowing chip gas passage is arranged in the laser pipe cutting feeding chuck. The technical features described in this section are basically the same as those of the prior art, and will not be described here.

[0027] The laser pipe cutting and feeding chuck of the embodiment is different from the prior art in that it is also provided with a three-way air pressure rotator 100 for inputting high-pressure air required for work. Correspondingly, the chuck rack 1 of the embodiment is no longer provided with a clamping air nozzle 11, an opening air nozzle 12, corresponding air passages and three O-shaped sealing rings 13 arranged in the chuck rack 1, so as to solve the technical problem that the three O-shaped sealing rings 13 of the similar chuck in the prior art are prone to wear and replacement, which is time-consuming and laborious and affects the production efficiency. Meanwhile, the transmission mechanism 8 of the laser pipe cutting and feeding chuck of the embodiment does not adopt a transmission mechanism composed of a large gear 81, a small gear 82 and a rack 83. The transmission mechanism 8 of the embodiment is changed to a transmission mechanism composed of a lever 84 and a power wedge 85, so as to solve the technical problem that the stroke of the chuck claw of the similar chuck in the prior art is small, which limits the outer diameter size of the pipe material that can be clamped by the chuck and thus affects the performance-price ratio of the chuck.

[0028] The above improved parts of the laser pipe cutting and feeding chuck of the embodiment relative to the prior art are described in detail as follows.

[0029] Referring to Figures 9 to 11 and Figure 6The three-way gas pressure rotator 100 is a commercially available component, which comprises a shell 101, a rear cover 102 fixedly arranged at the rear end of the shell 101 through bolts, a core rod 103 rotatably arranged in the shell 101 and the rear cover 102 through a mounting bearing 104; the shell 101 is provided with a clamping air hole 101-1 and an opening air hole 101-2, and the shell 101 is correspondingly provided with three sealing rings 105 for realizing air tightness; the rear cover 102 is provided with a blowing scrap air hole 102-1; the core rod 103 is provided with a first power air channel 103-1, a second power air channel 103-2 and a blowing scrap air channel 103-3, the first power air channel 103-1 and the second power air channel 103-2 are communicated with the clamping air hole 101-1 and the opening air hole 101-2 of the shell 101 respectively, and the blowing scrap air channel 103-3 of the core rod 103 is communicated with the blowing air hole 102-1 of the rear cover 102. The three-way gas pressure rotator 100 is fixedly connected with the rear end of the main shaft 2 through the front end of the core rod 103, so that the three-way gas pressure rotator 100 rotates coaxially with the main shaft 2 during work, and the first power air channel 103-1 and the second power air channel 103-2 of the core rod 103 are in air connection with the two power air channels of the main shaft 2 and the shell 4; the blowing scrap air channel 103-3 of the core rod 103 is in air connection with the blowing scrap gas channel arranged in the chuck. During work, the high-pressure air input through the clamping air hole 101-1 and the opening air hole 101-2 of the shell 101 of the three-way gas pressure rotator 100 drives the inner piston 6 and the outer piston 7 to extend and retract through the two power air channels in the core rod 103 and the two power air channels of the main shaft 2 and the shell 4, so as to correspondingly control the clamping and opening of each pair of clamping jaws 9 in the horizontal direction and the vertical direction, and the high-pressure air input through the blowing scrap air hole 102-1 of the rear cover 102 of the three-way gas pressure rotator 100 blows away the machining scraps between the front cover 5 and the clamping jaws 9 during cutting through the blowing scrap air channel 103-3 of the core rod 103 and the blowing scrap gas channel of the chuck. As a preferred mode, the three-way gas pressure rotator 100 is provided with a fixing frame 106, one side of the fixing frame 106 is fixedly connected with the rear cover 102 of the three-way gas pressure rotator 100, and the other side of the fixing frame 106 is fixedly connected with the rack 1, so as to enhance the installation and working stability of the three-way gas pressure rotator 100.

[0030] Although three sealing rings 105 are arranged in the three-path gas pressure rotator 100, the sealing rings 105 are also subjected to the friction of the core rod 103 rotating synchronously with the main shaft 2 during operation. Since the outer diameter of the core rod 103 is much smaller than the outer diameter of the main shaft 2, the linear speed of the core rod 103 rotating on the sealing ring 105 is much smaller than the linear speed of the main shaft 2 rotating on the O-shaped sealing ring 13 in the prior art at the same angular velocity. Therefore, the wear speed of the sealing ring 105 is much smaller than the wear speed of the O-shaped sealing ring 13 in the prior art, that is, the effective service life of the sealing ring 105 is much longer than that of the O-shaped sealing ring 13 in the prior art. Meanwhile, when the sealing ring 105 needs to be replaced due to wear reaching the service life, the rear cover 102 of the three-path gas pressure rotator 100 can be conveniently and quickly detached from the shell 101 by screwing the bolt, and the sealing ring 105 can be replaced, which saves time and effort. Unlike the prior art, the O-shaped sealing ring 13 needs to be replaced by disassembling the chuck as a whole.

[0031] Referring to Figure 5 and Figure 6 The laser pipe cutting and feeding chuck of the embodiment comprises a transmission mechanism 8 composed of a lever 84 and a power wedge 85. Four sets of transmission mechanisms 8 are provided, each corresponding to each jaw 9. One end of each lever 84 of two sets of transmission mechanisms 8 is in transmission connection with the inner piston 6, and the other end of each lever 84 is in transmission connection with a power wedge 85 movably arranged on the front cover 5. One horizontal jaw 9 is fixedly arranged on each power wedge 85. One end of each lever 84 of the other two sets of transmission mechanisms 8 is in transmission connection with the outer piston 7, and the other end of each lever 84 is in transmission connection with a power wedge 85 movably arranged on the front cover 5. One vertical jaw 9 is fixedly arranged on each power wedge 85. During operation, the inner piston 6 and the outer piston 7 are extended and retracted to control a pair of horizontal jaws 9 and a pair of vertical jaws 9 to clamp and open.

[0032] The laser pipe cutting and feeding chuck of the embodiment replaces the transmission mechanism 8 composed of a large gear 81, a small gear 82 and a rack 83 in the prior art with a transmission mechanism 8 composed of a lever 84 and a power wedge 85. Under the premise of the same external size, the single-jaw stroke is increased from 15 mm in the prior art to 30 mm, that is, the external size of the workpiece that can be clamped during use can be doubled, thereby effectively improving the performance-cost ratio of the chuck.

[0033] The above embodiments are descriptions of specific implementation manners of the utility model, rather than limitations of the utility model. Those skilled in the related technical field can make various transformations and changes without departing from the spirit and scope of the utility model, and obtain corresponding equivalent technical solutions. Therefore, all equivalent technical solutions should be included in the patent protection scope of the utility model.

Claims

1. A laser tube cutting feeding chuck, comprising a frame, a main shaft rotatably mounted within the frame via bearings, a rotary drive mechanism mounted on the frame for driving the main shaft to rotate, a housing fixedly connected to the main shaft, a front cover fixedly mounted at the front end of the housing, an inner piston and an outer piston mounted within the housing, and a pair of transverse jaws and a pair of vertical jaws mounted on the front side of the front cover and driven by the inner piston and the outer piston respectively through two sets of transmission mechanisms; the main shaft and the housing are provided with two power air passages through which high-pressure air passes for driving the inner piston and the outer piston to extend and retract, characterized in that: Also include the use of the three-way air pressure swivel for input high pressure air, the three-way air pressure swivel and the main shaft airtight fixed connection, and the three-way air pressure swivel and the main shaft and the two power airway in the shell aeration.

2. The laser tube cutting and feeding chuck according to claim 1, characterized in that: The three-way air pressure swivel includes a shell, a rear cover fixedly provided at the rear end of the shell by bolts, and a core rod rotatably provided in the shell and the rear cover by bearings; the shell is provided with a clamping air hole and an opening air hole for inputting high pressure air during use, and three sealing rings for air tightness are arranged in the shell; the core rod is provided with two power airways connected with the clamping air hole and the opening air hole of the shell respectively, and the three-way air pressure swivel is fixedly connected with the rear end of the main shaft by the front end of the core rod, and the two power airways in the core rod are correspondingly connected with the two power airways of the main shaft.

3. The laser tube cutting and feeding chuck according to claim 2, characterized in that: The laser pipe cutting and feeding chuck is provided with a scrap blowing gas channel, the rear cover of the three-way air pressure swivel is provided with a scrap blowing air hole for inputting high pressure air during use, the core rod is provided with a scrap blowing air channel connected with the scrap blowing air hole of the rear cover, and the scrap blowing air channel in the core rod is connected with the scrap blowing gas channel in the laser pipe cutting and feeding chuck.

4. The laser tube cutting and feeding chuck according to claim 2, characterized in that: The three-way air pressure swivel further comprises a fixed frame, one side of the fixed frame is fixedly connected with the rear cover of the three-way air pressure swivel, and the other side of the fixed frame is fixedly connected with the rack.

5. The laser tube cutting and feeding chuck as claimed in claim 1, wherein: The transmission mechanism includes a lever and a power wedge, and the transmission mechanism is provided with four sets, one end of the lever of each of two sets of transmission mechanisms is connected with the inner piston, and the other end of the lever is connected with a power wedge movably arranged on the front cover, and a transverse claw is fixedly arranged on each power wedge; one end of the lever of each of the other two sets of transmission mechanisms is connected with the outer piston, and the other end of the lever is connected with a power wedge movably arranged on the front cover, and a vertical claw is fixedly arranged on each power wedge.

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