CN110947988A - Rotary chuck and cutting mechanism of jacketing machine - Google Patents

Abstract

The invention discloses a rotary chuck and a cutting mechanism of a jacketing machine, which comprises a mounting seat, an inner sleeve and a clamping assembly, wherein the clamping assembly comprises two groups of elastic chucks oppositely arranged in an inner hole of the inner sleeve, a conical elastic clamping end of the elastic chucks faces the inner side of the inner hole of the inner sleeve, two groups of pushing blocks are arranged in the inner hole of the inner sleeve in a sliding manner, conical holes corresponding to the conical elastic clamping end of the elastic chucks are formed in the pushing blocks, the two groups of pushing blocks are arranged at intervals, a pushing oil cavity is formed between the two groups of pushing blocks, an oil injection channel communicated with the pushing oil cavity is arranged on the mounting seat, when hydraulic oil is injected into the pushing oil cavity through the oil injection channel, the pushing blocks can be pushed to slidably extrude the conical elastic clamping end to deform and clamp a copper pipe, meanwhile, the inner sleeve can keep a free, the copper pipe is conveniently cut off in an annular mode, and the structure of the cutting mechanism can be simplified.

Description

Rotary chuck and cutting mechanism of jacketing machine

Technical Field

The invention relates to the field of automobile accessory production equipment, in particular to a rotary chuck and a cutting mechanism of a jacketing machine.

Background

In sleeve pipe production facility, the sleeve pipe is through longer copper pipe cutting segmentation postprocessing formation, when cutting off, if adopt conventional saw bit to cut off, very easily produce the burr in incision department, need carry out secondary operation to the incision, so in some jacketing machines in order to reduce the burring process, cut off the mode that the copper pipe adopted the circular cutting, because traditional tong is mostly fixed chuck, so need artifical rotatory circle cutter unit, extravagant manpower resources increase cost, if adopt the rotation of electric drive circle cutter unit, because the structure of circle cutter unit itself is comparatively complicated, and the volume is great, so the electric drive mechanism structure of circle cutter unit is comparatively complicated, and be unfavorable for the overall arrangement of equipment.

Disclosure of Invention

The invention aims to solve at least one technical problem in the prior art, and provides a rotary chuck and a cutting mechanism of a jacketing machine, which can clamp and allow a copper pipe to rotate, and facilitate annular cutting of the copper pipe.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a rotary chuck of a jacketing machine comprises a mounting seat, an inner sleeve and a clamping assembly, wherein a through hole is formed in the mounting seat; the inner sleeve is rotatably arranged in the through hole through a rotating mechanism; the centre gripping subassembly includes the collet of the telescopic hole including two sets of relative settings, collet's toper elasticity exposed core orientation the inboard of the hole of inner skleeve, it is provided with two sets of bulldozing blocks that correspond with two sets of collet's toper elasticity exposed core respectively to slide in the hole of inner skleeve, set up on the bulldozing block with the bell mouth that collet's toper elasticity exposed core corresponds, two sets of bulldoze the block interval setting and form one between two sets of bulldozing blocks and bulldoze the oil pocket, be provided with on the mount pad and communicate to the oiling passageway that bulldozes the oil pocket.

One of the above technical solutions has at least one of the following advantages or beneficial effects: when hydraulic oil is injected into the pushing and pressing oil cavity through the oil injection channel, the pushing and pressing block can be pushed to slide and extrude the conical elastic clamping end to deform and clamp the copper pipe, meanwhile, the inner sleeve can keep a free rotation state through the rotating mechanism, the copper pipe can rotate freely while being clamped and fixed, the copper pipe can be conveniently cut off in an annular mode, and the structure of the cutting mechanism can be simplified.

According to some embodiments of the invention, the sealing structures are arranged between the outer wall of the inner sleeve and the inner wall of the through hole at intervals, the oil injection cavity is formed at intervals between the sealing structures, the mounting seat is provided with an oil injection hole communicated with the oil injection cavity, the inner sleeve is provided with an oil delivery hole communicated with the oil injection cavity and the pushing oil cavity, the oil injection hole, the oil injection cavity and the oil delivery hole form an oil injection channel communicated with the pushing oil cavity, the mounting seat is generally mounted on a rack or a workbench during use, and hydraulic oil pipes can be connected to the oil injection hole to keep delivery of hydraulic oil when the inner sleeve is fixed or rotated, so that clamping control of the elastic chuck is realized, and the structure is.

According to some embodiments of the invention, the sealing structure is an oil cavity sealing ring arranged between the outer wall of the inner sleeve and the inner wall of the through hole, the oil injection cavity is formed at the interval between the two groups of oil cavity sealing rings, the sealing performance is improved through the oil cavity sealing ring, and the oil leakage is reduced.

According to some embodiments of the invention, the rotating mechanism is a bearing arranged between the outer wall of the inner sleeve and the inner wall of the through hole, so that the smoothness of rotation of the inner sleeve is improved.

According to some embodiments of the invention, a retainer ring for shielding the bearing is arranged at the edge of the through hole of the mounting seat to prevent the bearing from sliding out.

According to some embodiments of the invention, a limiting structure capable of limiting the sliding of the collet is arranged in the inner sleeve, so that the collet is limited to rotate in the inner sleeve, and the normal clamping and loosening performance of the collet is ensured.

According to some embodiments of the invention, the limiting structure comprises end covers fixedly arranged at two ends of the inner sleeve, the end covers are provided with limiting holes corresponding to the elastic chuck, the elastic chuck can be limited from sliding out of the inner sleeve through the limiting holes, and the copper pipe can penetrate into the clamping hole of the elastic chuck through the limiting holes.

According to some embodiments of the invention, a compression spring is arranged between the end cover and the pushing block, so that after the pressure of the hydraulic oil is relieved, the pushing block is pushed by the compression spring to return to a position where the elastic chuck is not pushed, the copper pipe is loosened, and the copper pipe is convenient to convey.

According to some embodiments of the invention, the opposite sides of the two groups of pushing blocks are respectively provided with mutually nested annular sleeving structures, the pushing oil cavities are formed between the annular sleeving structures and the inner hole wall of the inner sleeve, and the two groups of pushing blocks can slide relatively, so that the two groups of pushing blocks can be driven to slide relatively after the pushing oil cavities are filled with oil, and hydraulic oil can be prevented from entering the elastic chuck through the annular sleeving structures, and the copper pipe is prevented from being polluted.

According to some embodiments of the invention, the nested sealing ring is arranged at the nested position of the annular sleeving structure, so that the sealing performance of the annular sleeving structure and the pushing oil cavity is improved, and the occurrence of hydraulic oil dripping to the elastic chuck is reduced.

According to some embodiments of the invention, a plunger seal ring is arranged between the plunger and the inner hole of the inner sleeve to improve the sealing performance of the plunger oil chamber.

The invention also discloses a cutting mechanism which comprises the rotary chuck, the chuck rotary driving mechanism and the circular cutting knife set, wherein the chuck rotary driving mechanism can drive the inner sleeve to rotate so as to drive the copper pipe to rotate, so that the copper pipe is matched with the circular cutting knife set to cut the copper pipe, the structure is simple and reasonable, and the cut is smooth.

According to some embodiments of the present invention, a synchronous pulley is fixedly disposed on the inner sleeve, and the chuck rotation driving mechanism includes a chuck rotation driving motor, and the chuck rotation driving motor is connected to the synchronous pulley through a synchronous belt mechanism, so as to drive the chuck and the copper pipe to rotate.

According to some embodiments of the invention, the ring cutter set comprises two groups of supporting rollers arranged at the opening end of the elastic chuck, and a hob cutter arranged opposite to the two groups of supporting rollers, wherein the hob cutter is rotatably arranged on a hob head, the ring cutter set further comprises a hob cutter feeding mechanism capable of driving the hob head to move away from or close to the two groups of supporting rollers, after the copper pipe penetrates through the rotary chuck, hydraulic oil is injected to clamp the copper pipe, the hob cutter is pressed downwards, and meanwhile, the chuck rotation driving mechanism drives the copper pipe to rotate, so that the copper pipe can be cut off.

According to some embodiments of the present invention, the hob feeding mechanism is an air cylinder fixedly arranged on the mounting base, and an ejector rod of the air cylinder is connected to the hob head, and the hob is driven to feed by the air cylinder.

Drawings

The invention is further described below with reference to the accompanying drawings and examples;

FIG. 1 is a schematic structural view of a rotating chuck according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a rotating chuck in accordance with an embodiment of the present invention;

FIG. 3 is an exploded view of a rotating chuck in accordance with an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a cutting mechanism according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

As shown in fig. 1 and 2, a rotating chuck of a jacketing machine includes a mounting base 110, an inner sleeve 120, and a clamping assembly 130, wherein a through hole 111 is formed in the mounting base 110; the inner sleeve 120 is rotatably arranged in the through hole 111 through a rotating mechanism; the clamping assembly 130 comprises two groups of elastic clamping heads 131 oppositely arranged in an inner hole of the inner sleeve 120, conical elastic clamping ends 131a of the elastic clamping heads 131 face the inner side of the inner hole of the inner sleeve 120, two groups of pushing blocks 132 respectively corresponding to the conical elastic clamping ends 131a of the two groups of elastic clamping heads 131 are arranged in the inner hole of the inner sleeve 120 in a sliding manner, conical holes 132a corresponding to the conical elastic clamping ends 131a of the elastic clamping heads 131 are formed in the pushing blocks 132, the two groups of pushing blocks 132 are arranged at intervals, a pushing oil cavity 133 is formed between the two groups of pushing blocks 132, an oil filling channel communicated with the pushing oil cavity 133 is arranged on the mounting base 110, when hydraulic oil is injected into the pushing oil cavity 133 through the oil filling channel, the pushing blocks 132 can be pushed to extrude the conical elastic clamping ends 131a to deform and clamp the copper pipe, and, the copper pipe can rotate freely while being clamped and fixed, the copper pipe is cut off in an annular mode conveniently, and the structure of the cutting mechanism can be simplified.

According to some embodiments of the present invention, as shown in fig. 2, a sealing structure 121 is disposed at an interval between an outer wall of the inner sleeve 120 and an inner wall of the through hole 111, an oil injection cavity 122 is formed at an interval between the sealing structures 121, an oil injection hole 112 communicated with the oil injection cavity 122 is disposed on the mounting base 110, an oil delivery hole 123 communicating the oil injection cavity 122 and the pushing oil cavity 133 is disposed on the inner sleeve 120, the oil injection hole 112, the oil injection cavity 122, and the oil delivery hole 123 form an oil injection passage communicated with the pushing oil cavity 133, when in use, the mounting base 110 is generally mounted on a rack or a workbench, and can be connected to the oil injection hole 112 through a hydraulic oil pipe, so that the hydraulic oil can be maintained to be delivered when the inner sleeve 120 is fixed or.

Of course, in the specific implementation process, the oil supply device can be directly connected to the pushing oil cavity 133 through a movable joint, so that continuous oil supply is realized, the oil pipe is prevented from being broken by limiting the rotation range of the inner sleeve 120, and in addition, the oil pipe can be pulled out after the copper pipe is clamped, so that the rotation of the inner sleeve 120 is prevented from being influenced.

According to some embodiments of the present invention, as shown in fig. 2, the sealing structure 121 includes oil cavity sealing rings disposed between the outer wall of the inner sleeve 120 and the inner wall of the through hole 111, and an oil injection cavity 122 is formed in the space between the two oil cavity sealing rings, so that the sealing performance is improved by the oil cavity sealing rings, and the occurrence of oil leakage is reduced.

According to some embodiments of the present invention, as shown in fig. 2, the sealing structure 121 further includes a positioning ring 121a, the positioning ring 121a is disposed in the through hole 111, the oil chamber sealing ring is disposed at the positioning ring 121a, and the positioning ring 121a can position the oil chamber sealing ring to reduce the occurrence of displacement.

According to some embodiments of the present invention, as shown in fig. 2, a positioning seal ring is disposed between the positioning ring 121a and the through hole 111 to improve the sealing performance.

According to some embodiments of the present invention, as shown in fig. 2, the rotation mechanism is a bearing 113 disposed between the outer wall of the inner sleeve 120 and the inner wall of the through hole 111, which improves the smoothness of the rotation of the inner sleeve 120.

Of course, there is a rotation structure formed by the direct fitting of the outer wall of the inner sleeve 120 and the inner wall of the through hole 111, which will not be described in detail herein.

According to some embodiments of the present invention, as shown in fig. 2, a retainer ring 114 for shielding the bearing 113 is provided at an edge of the through hole 111 of the mounting base 110 to prevent the bearing 113 from slipping out.

According to some embodiments of the present invention, a limiting structure capable of limiting the sliding of the collet 131 is disposed in the inner sleeve 120, so as to limit the rotation of the collet 131 in the inner sleeve 120, thereby ensuring the normal clamping and releasing performance.

According to some embodiments of the present invention, as shown in fig. 2, the limiting structure includes end caps 124 fixedly disposed at two ends of the inner sleeve 120, the end caps 124 are formed with limiting holes 125 corresponding to the elastic chucks 131, the elastic chucks 131 can be limited from sliding out of the inner sleeve 120 through the limiting holes 125, and the copper pipe can penetrate into the clamping holes of the elastic chucks 131 through the limiting holes 125.

Of course, in an embodiment, an annular groove may be formed on an inner wall of the inner bore of the inner sleeve 120, and a protruding structure matched with the annular groove may be provided on the collet 131, which will not be described in detail herein.

According to some embodiments of the present invention, as shown in fig. 2 and 3, a compression spring 140 is disposed between the end cap 124 and the pushing block 132, so that after the hydraulic oil is depressurized, the pushing block 132 is pushed by the compression spring 140 to return to a position where the elastic collet 131 is not pushed, so as to release the copper tube, thereby facilitating the transportation of the copper tube.

According to some embodiments of the present invention, as shown in fig. 2, the two sets of pushing blocks 132 are respectively provided with annular nesting structures 134 on opposite sides thereof, the annular nesting structures 134 form pushing oil chambers 133 with the inner hole wall of the inner sleeve 120, and the two sets of pushing blocks 132 can slide relative to each other, so that the two sets of pushing blocks 132 can be driven to slide relative to each other after the pushing oil chambers 133 are filled with oil, and hydraulic oil can be blocked from entering the elastic collet 131 by the annular nesting structures 134, so as to avoid contamination of the copper pipe.

According to some embodiments of the present invention, as shown in fig. 2, a nesting sealing ring 135 is disposed at a nesting position of the annular sleeving structure 134 to improve the sealing performance of the annular sleeving structure 134 and the pressing oil chamber 133, and reduce the occurrence of hydraulic oil dripping to the elastic collet 131.

According to some embodiments of the present invention, as shown in FIG. 2, a plunger seal 136 is disposed between plunger 132 and the inner bore of inner sleeve 120 to improve the sealing of plunger oil chamber 133.

As shown in fig. 4, the embodiment of the present invention further discloses a cutting mechanism, which includes the rotary chuck, the chuck rotation driving mechanism, and the circular cutting knife group 210 disclosed in any of the above embodiments, wherein the chuck rotation driving mechanism can drive the inner sleeve 120 to rotate, so as to drive the copper pipe to rotate, so that the copper pipe is matched with the circular cutting knife group 210 to cut the copper pipe, and the cutting mechanism has a simple and reasonable structure and a flat cut.

According to some embodiments of the present invention, as shown in fig. 4, a synchronous pulley 126 is fixedly disposed on the inner sleeve 120, and the chuck rotation driving mechanism includes a chuck rotation driving motor 220, and the chuck rotation driving motor 220 is connected to the synchronous pulley 126 through a synchronous belt mechanism, so as to drive the chuck and the copper pipe to rotate.

Of course, in the implementation process, the inner sleeve 120 may also be driven to rotate by a motor cooperating with a gear set, which is not described in detail herein.

According to some embodiments of the present invention, as shown in fig. 4, the ring cutting knife set 210 includes two sets of supporting rollers 231 disposed at the opening end of the elastic chuck 131, and a hob 232 disposed opposite to the two sets of supporting rollers 231, the hob 232 is rotatably disposed on a hob 233, the ring cutting knife set 210 further includes a hob feeding mechanism 234 capable of driving the hob 233 to move away from or close to the two sets of supporting rollers 231, after the copper pipe penetrates into the rotary chuck, hydraulic oil is injected to clamp the copper pipe, the hob 232 is pressed down, and at the same time, the chuck rotation driving mechanism drives the copper pipe to rotate, so as to cut the copper pipe.

According to some embodiments of the present invention, as shown in fig. 4, the hob feeding mechanism 234 is a cylinder fixedly arranged on the mounting base 110, and the top rod of the cylinder is connected to the hob holder 233, and the hob feeding is driven by the cylinder.

Of course, in the implementation, the hob feed mechanism 234 may also be a screw drive mechanism, which is not described in detail herein.

It is readily understood by those skilled in the art that the above-described preferred modes can be freely combined and superimposed without conflict.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (10)

1. The rotary chuck of jacketing machine, its characterized in that includes:

the mounting seat (110), wherein a through hole (111) is arranged in the mounting seat (110);

the inner sleeve (120), the said inner sleeve (120) is rotated and set up in the through hole (111);

the clamping assembly (130) comprises two groups of elastic chucks (131) oppositely arranged in an inner hole of an inner sleeve (120), a conical elastic clamping end (131a) of each elastic chuck (131) faces the inner side of the inner hole of the inner sleeve (120), two groups of pushing blocks (132) corresponding to the conical elastic clamping ends (131a) of the two groups of elastic chucks (131) are arranged in the inner hole of the inner sleeve (120) in a sliding mode, conical holes (132a) corresponding to the conical elastic clamping ends (131a) of the elastic chucks (131) are formed in the pushing blocks (132), two groups of pushing blocks (132) are arranged at intervals, a pushing oil cavity (133) is formed between the two groups of pushing blocks (132), and an oil injection channel communicated to the pushing oil cavity (133) is formed in the mounting base (110).

2. The rotating chuck for a jacketing machine according to claim 1,

sealing structures (121) are arranged between the outer wall of the inner sleeve (120) and the inner wall of the through hole (111) at intervals, an oil injection cavity (122) is formed at intervals between the sealing structures (121), an oil filling hole (112) communicated to the oil injection cavity (122) is formed in the mounting seat (110), an oil conveying hole (123) communicated with the oil injection cavity (122) and the pushing oil cavity (133) is formed in the inner sleeve (120), and an oil filling channel communicated to the pushing oil cavity (133) is formed by the oil filling hole (112), the oil injection cavity (122) and the oil conveying hole (123).

3. The rotating chuck for a jacketing machine according to claim 2,

the sealing structure (121) comprises an oil cavity sealing ring arranged between the outer wall of the inner sleeve (120) and the inner wall of the through hole (111).

4. The rotating chuck for a jacketing machine according to claim 1,

a bearing (113) is arranged between the outer wall of the inner sleeve (120) and the inner wall of the through hole (111), and a retainer ring (114) used for shielding the bearing (113) is arranged at the edge of the through hole (111) of the mounting seat (110).

5. The rotating chuck for a jacketing machine according to claim 1,

be provided with in inner sleeve (120) and can restrict the gliding limit structure of collet (131), limit structure is including fixed setting end cover (124) at the both ends of inner sleeve (120), end cover (124) seted up with spacing hole (125) that collet (131) correspond, through spacing hole (125) can restrict collet (131) roll-off inner sleeve (120).

6. The rotating chuck for a jacketing machine according to claim 5,

a compression spring (140) is arranged between the end cover (124) and the pushing block (132).

7. The rotating chuck for a jacketing machine according to claim 1,

opposite sides of the two groups of pushing blocks (132) are respectively provided with mutually nested annular sleeving structures (134), and the pushing oil cavity (133) is formed between the annular sleeving structures (134) and the inner hole wall of the inner sleeve (120).

8. Cutting mechanism, characterized in that it comprises a cartridge rotary drive mechanism capable of rotating said inner sleeve (120), a ring cutter set (210) and a rotating cartridge according to any one of claims 1 to 7.

9. The cleaving mechanism of claim 8,

a synchronous pulley (126) is fixedly arranged on the inner sleeve (120), the chuck rotation driving mechanism comprises a chuck rotation driving motor (220), and the chuck rotation driving motor (220) is connected to the synchronous pulley (126) through a synchronous belt mechanism.

10. The cleaving mechanism of claim 8,

the ring cutting knife group (210) comprises two groups of bearing rollers (231) arranged at the opening end of the elastic chuck (131) and hobbing cutters (232) arranged opposite to the two groups of bearing rollers (231), wherein the hobbing cutters (232) are rotatably arranged on a hobbing cutter frame (233), and the ring cutting knife group (210) further comprises a hobbing cutter feeding mechanism (234) capable of driving the hobbing cutter frame (233) to be far away from or close to the two groups of bearing rollers (231) to move.

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