Rotary chuck and cutting mechanism of casing machine

Abstract

The invention discloses a rotary chuck and a cutting mechanism of a casing machine, comprising a mounting seat, an inner sleeve, and a clamping assembly. The clamping assembly comprises two groups of elastic chucks relatively arranged in the inner hole of the inner sleeve, the conical elastic clamping end of the elastic chuck faces the inner side of the inner hole of the inner sleeve, two groups of pushing blocks are slidably arranged in the inner hole of the inner sleeve, conical holes corresponding to the conical elastic clamping ends of the elastic chuck are opened on the pushing blocks, the two groups of pushing blocks are arranged at intervals and a pushing oil chamber is formed between the two groups of pushing blocks, an oil injection channel connected to the pushing oil chamber is provided on the mounting seat, when hydraulic oil is injected into the pushing oil chamber through the oil injection channel, the pushing block can be pushed to slide and squeeze the conical elastic clamping end to deform and clamp the copper tube, and at the same time, the inner sleeve can be kept in a free rotation state through the rotating mechanism, so that the copper tube can be freely rotated while being clamped and fixed, so as to facilitate the annular cutting of the copper tube and simplify the structure of the cutting mechanism.

Description

Technical Field

[0001] The invention relates to the field of automobile parts production equipment, and in particular to a rotary chuck and a cutting mechanism of a casing machine. Background Art

[0002] In the casing production equipment, the casing is formed by cutting a long copper tube into sections. When cutting, if a conventional saw blade is used for cutting, burrs are easily generated at the cut end, and the end needs to be processed secondary. Therefore, in order to reduce the deburring process, some casing machines use a circular cutting method to cut the copper tube. Since traditional clamps are mostly fixed clamps, manual rotation of the circular cutting knife group is required, which wastes human resources and increases costs. If an electric drive is used to rotate the circular cutting knife group, since the structure of the circular cutting knife group itself is relatively complex and the size is large, the electric drive mechanism structure of the circular cutting knife group is relatively complex and is not conducive to the layout of the equipment. Summary of the invention

[0003] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide a rotary chuck and a cutting mechanism for a casing machine, which can clamp and allow the copper tube to rotate, so as to facilitate the annular cutting of the copper tube.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A rotary chuck of a casing machine comprises a mounting seat, an inner sleeve, and a clamping assembly, wherein a through hole is arranged in the mounting seat; the inner sleeve is rotatably arranged in the through hole by a rotating mechanism; the clamping assembly comprises two groups of elastic chucks relatively arranged in the inner hole of the inner sleeve, the conical elastic clamping end of the elastic chuck faces the inner side of the inner hole of the inner sleeve, two groups of pushing blocks corresponding to the conical elastic clamping ends of the two groups of elastic chucks are slidably arranged in the inner hole of the inner sleeve, the pushing blocks are provided with conical holes corresponding to the conical elastic clamping ends of the elastic chucks, the two groups of pushing blocks are arranged at intervals and a pushing oil chamber is formed between the two groups of pushing blocks, and the mounting seat is provided with an oil injection channel connected to the pushing oil chamber.

[0006] 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 oil chamber through the oil injection channel, it can push the pushing block to slide and extrude the conical elastic clamping end to deform and clamp the copper tube. At the same time, the inner sleeve can be kept in a free rotation state through the rotating mechanism, so that the copper tube can be clamped and fixed while being able to rotate freely, which facilitates the annular cutting of the copper tube and simplifies the structure of the cutting mechanism.

[0007] According to some embodiments of the present invention, a sealing structure is arranged between the outer wall of the inner sleeve and the inner wall of the through hole, the interval between the sealing structures forms an oil filling chamber, the mounting seat is provided with an oil filling hole connected to the oil filling chamber, the inner sleeve is provided with an oil delivery hole connecting the oil filling chamber and the pushing oil chamber, the oil filling hole, the oil filling chamber and the oil delivery hole form an oil filling channel connected to the pushing oil chamber, and the mounting seat is generally installed on a frame or a workbench when in use, and can be connected to the oil filling hole through a hydraulic oil pipe to maintain the delivery of hydraulic oil when the inner sleeve is fixed or rotated, thereby realizing the clamping control of the elastic chuck and having a simple structure.

[0008] According to some embodiments of the present invention, the sealing structure is an oil chamber sealing ring arranged between the outer wall of the inner sleeve and the inner wall of the through hole. The oil injection chamber is formed in the interval between the two groups of oil chamber sealing rings. The sealing performance is improved by the oil chamber sealing ring to reduce the occurrence of oil leakage.

[0009] According to some embodiments of the present invention, the rotating mechanism is a bearing disposed between the outer wall of the inner sleeve and the inner wall of the through hole, so as to improve the smoothness of the rotation of the inner sleeve.

[0010] According to some embodiments of the present invention, a retaining ring for shielding the bearing is provided at the edge of the through hole of the mounting seat to prevent the bearing from slipping out.

[0011] According to some embodiments of the present invention, a limiting structure capable of limiting the sliding of the elastic collet is provided in the inner sleeve, so as to limit the rotation of the elastic collet in the inner sleeve and ensure its normal clamping and releasing performance.

[0012] According to some embodiments of the present invention, the limiting structure includes end covers fixedly arranged at both ends of the inner sleeve, and the end covers are provided with limiting holes corresponding to the elastic clamp, through which the elastic clamp can be limited from sliding out of the inner sleeve, and the copper tube can be inserted into the clamping hole of the elastic clamp through the limiting hole.

[0013] According to some embodiments of the present invention, a compression spring is arranged between the end cover and the pushing block, so that after the hydraulic oil is depressurized, the compression spring pushes the pushing block to return to the position where the elastic chuck is not pushed, so as to loosen the copper tube and facilitate the transportation of the copper tube.

[0014] According to some embodiments of the present invention, mutually nested annular sleeve structures are respectively provided on opposite sides of the two groups of pushing blocks, and the pushing oil chamber is formed between the annular sleeve structure and the inner hole wall of the inner sleeve, so that the two groups of pushing blocks can slide relative to each other, so that after the pushing oil chamber is filled with oil, the two groups of pushing blocks can be driven to slide relative to each other, and the annular sleeve structure can block the hydraulic oil from entering the elastic chuck to avoid contaminating the copper tube.

[0015] According to some embodiments of the present invention, a nested sealing ring is provided at the nested position of the annular sleeve structure to improve the sealing performance of the annular sleeve structure and the pushing oil chamber and reduce the occurrence of hydraulic oil dripping onto the elastic chuck.

[0016] According to some embodiments of the present invention, a pushing block sealing ring is provided between the pushing block and the inner hole of the inner sleeve to improve the sealing performance of the pushing oil chamber.

[0017] The present invention also discloses a cutting mechanism, comprising a rotary chuck, a chuck rotation drive mechanism, and a ring cutting knife group disclosed in any of the above embodiments. The chuck rotation drive mechanism can drive the inner sleeve to rotate, thereby driving the copper tube to rotate, so that the copper tube cooperates with the ring cutting knife group to cut the copper tube. The structure is simple and reasonable, and the incision is smooth.

[0018] According to some embodiments of the present invention, a synchronous pulley is fixedly provided on the inner sleeve, and the chuck rotation drive mechanism includes a chuck rotation drive motor, and the chuck rotation drive motor is connected to the synchronous pulley through a synchronous belt mechanism, thereby driving the chuck and the copper tube to rotate.

[0019] According to some embodiments of the present invention, the circular cutting tool group includes two groups of supporting rollers arranged at the open end of the elastic chuck, and rolling cutters arranged opposite to the two groups of supporting rollers. The rolling cutters are rotatably arranged on a rolling cutter frame. The circular cutting tool group also includes a rolling cutter feeding mechanism that can drive the rolling cutter frame to move away from or close to the two groups of supporting rollers. After the copper tube is inserted into the rotary chuck, hydraulic oil is injected to clamp the copper tube, the rolling cutter is pressed down, and at the same time, the chuck rotation drive mechanism drives the copper tube to rotate, thereby cutting the copper tube.

[0020] According to some embodiments of the present invention, the hob feed mechanism is a cylinder fixedly disposed on a mounting seat, a push rod of the cylinder is connected to the hob frame, and the hob feed is driven by the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments;

[0022] Figure 1 It is a structural schematic diagram of a rotary chuck according to a specific embodiment of the present invention;

[0023] Figure 2 It is a cross-sectional schematic diagram of a rotary chuck according to a specific embodiment of the present invention;

[0024] Figure 3 It is an exploded schematic diagram of a rotary chuck according to a specific embodiment of the present invention;

[0025] Figure 4 It is a structural schematic diagram of a cutting mechanism according to a specific embodiment of the present invention. DETAILED DESCRIPTION

[0026] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do 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 therefore should not be understood as a limitation on the present invention.

[0028] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0030] like Figure 1 , Figure 2As shown, a rotary chuck of a casing machine includes a mounting seat 110, an inner sleeve 120, and a clamping assembly 130. A through hole 111 is provided in the mounting seat 110; the inner sleeve 120 is rotatably arranged in the through hole 111 by a rotating mechanism; the clamping assembly 130 includes two groups of elastic chucks 131 relatively arranged in the inner hole of the inner sleeve 120, the tapered elastic clamping end 131a of the elastic chuck 131 faces the inner side of the inner hole of the inner sleeve 120, and two groups of pushing blocks 132 corresponding to the tapered elastic clamping ends 131a of the two groups of elastic chucks 131 are slidably arranged in the inner hole of the inner sleeve 120, and the pushing blocks 132 are provided with tapered holes 132a corresponding to the tapered elastic clamping ends 131a of the elastic chuck 131, and the two groups of pushing blocks 132 are arranged at intervals and at the two groups of pushing blocks 132 A pushing oil chamber 133 is formed between them, and an oil injection channel connected to the pushing oil chamber 133 is provided on the mounting seat 110. When the hydraulic oil is injected into the pushing oil chamber 133 through the oil injection channel, the pushing block 132 can be pushed to slide and squeeze the conical elastic clamping end 131a to deform and clamp the copper tube. At the same time, the inner sleeve 120 can maintain a free rotation state through the rotating mechanism, so that the copper tube can be clamped and fixed while being able to rotate freely, which is convenient for the annular cutting of the copper tube and can simplify the structure of the cutting mechanism.

[0031] According to some embodiments of the present invention, Figure 2 As shown, a sealing structure 121 is arranged between the outer wall of the inner sleeve 120 and the inner wall of the through hole 111, and the interval between the sealing structures 121 forms an oil filling chamber 122. The mounting seat 110 is provided with an oil filling hole 112 connected to the oil filling chamber 122, and the inner sleeve 120 is provided with an oil delivery hole 123 connecting the oil filling chamber 122 and the pushing oil chamber 133. The oil filling hole 112, the oil filling chamber 122, and the oil delivery hole 123 form an oil filling channel connected to the pushing oil chamber 133. When in use, the mounting seat 110 is generally installed on a frame or a workbench, and can be connected to the oil filling hole 112 through a hydraulic oil pipe to maintain the delivery of hydraulic oil when the inner sleeve 120 is fixed or rotated, thereby realizing the clamping control of the elastic chuck 131, and the structure is simple.

[0032] Of course, in the specific implementation process, it can also be directly connected to the pushing oil chamber 133 through a movable joint to achieve continuous oil supply, and the oil pipe can be avoided from breaking by limiting the rotation range of the inner sleeve 120. In addition, the oil pipe can be pulled out after clamping the copper tube to avoid affecting the rotation of the inner sleeve 120.

[0033] According to some embodiments of the present invention, Figure 2 As shown, the sealing structure 121 includes an oil chamber sealing ring arranged between the outer wall of the inner sleeve 120 and the inner wall of the through hole 111, and an oil filling chamber 122 is formed in the interval between the two groups of oil chamber sealing rings. The oil chamber sealing ring improves the sealing performance and reduces the occurrence of oil leakage.

[0034] According to some embodiments of the present invention, Figure 2 As shown, the sealing structure 121 further includes a positioning ring 121a, which is disposed in the through hole 111, and the oil chamber sealing ring is disposed at the positioning ring 121a. The positioning ring 121a can position the oil chamber sealing ring to reduce displacement.

[0035] According to some embodiments of the present invention, Figure 2 As shown, a positioning sealing ring is provided between the positioning ring 121a and the through hole 111 to improve the sealing performance.

[0036] According to some embodiments of the present invention, Figure 2 As shown, the rotating mechanism is a bearing 113 disposed between the outer wall of the inner sleeve 120 and the inner wall of the through hole 111 , so as to improve the smoothness of the rotation of the inner sleeve 120 .

[0037] Of course, there is also a rotating structure formed by directly fitting the outer wall of the inner sleeve 120 and the inner wall of the through hole 111, which will not be described in detail here.

[0038] According to some embodiments of the present invention, Figure 2 As shown, a retaining ring 114 for shielding the bearing 113 is provided at the edge of the through hole 111 of the mounting seat 110 to prevent the bearing 113 from slipping out.

[0039] According to some embodiments of the present invention, a limiting structure capable of limiting the sliding of the elastic clamp 131 is provided in the inner sleeve 120, so as to limit the rotation of the elastic clamp 131 in the inner sleeve 120, thereby ensuring its normal clamping and releasing performance.

[0040] According to some embodiments of the present invention, Figure 2 As shown, the limiting structure includes end covers 124 fixedly arranged at both ends of the inner sleeve 120, and the end covers 124 are provided with limiting holes 125 corresponding to the elastic clamp 131. The limiting holes 125 can limit the elastic clamp 131 from sliding out of the inner sleeve 120, and the copper tube can be inserted into the clamping hole of the elastic clamp 131 through the limiting holes 125.

[0041] Of course, in a specific embodiment, an annular groove may be provided on the inner wall of the inner hole of the inner sleeve 120 , and a protruding structure cooperating with the annular groove may be provided on the elastic clamp 131 , which will not be described in detail here.

[0042] According to some embodiments of the present invention, Figure 2 , Figure 3 As shown, a compression spring 140 is provided between the end cover 124 and the pushing block 132 , so that after the hydraulic oil is depressurized, the compression spring 140 pushes the pushing block 132 to return to the position where the elastic clamp 131 is not pushed, so as to loosen the copper tube and facilitate the transportation of the copper tube.

[0043] According to some embodiments of the present invention, Figure 2 As shown, mutually nested annular sleeve structures 134 are respectively provided on opposite sides of the two groups of pushing blocks 132, and a pushing oil chamber 133 is formed between the annular sleeve structure 134 and the inner hole wall of the inner sleeve 120, so that the two groups of pushing blocks 132 can slide relative to each other, so that the pushing oil chamber 133 can drive the two groups of pushing blocks 132 to slide relative to each other after oil is filled, and the annular sleeve structure 134 can block the hydraulic oil from entering the elastic chuck 131 to avoid contaminating the copper tube.

[0044] According to some embodiments of the present invention, Figure 2 As shown, a nested sealing ring 135 is provided at the nested position of the annular sleeve structure 134 to improve the sealing performance of the annular sleeve structure 134 and the pushing oil chamber 133 and reduce the occurrence of hydraulic oil dripping onto the elastic clamp 131.

[0045] According to some embodiments of the present invention, Figure 2 As shown, a pushing block sealing ring 136 is provided between the pushing block 132 and the inner hole of the inner sleeve 120 to improve the sealing performance of the pushing oil chamber 133 .

[0046] like Figure 4 As shown, a specific embodiment of the present invention further discloses a cutting mechanism, including the rotary chuck, the chuck rotation drive mechanism, and the ring cutting knife group 210 disclosed in any of the above embodiments. The chuck rotation drive mechanism can drive the inner sleeve 120 to rotate, thereby driving the copper tube to rotate, so that the copper tube cooperates with the ring cutting knife group 210 to cut the copper tube. The structure is simple and reasonable, and the incision is smooth.

[0047] According to some embodiments of the present invention, Figure 4 As shown, a synchronous pulley 126 is fixedly provided on the inner sleeve 120, and the chuck rotation driving mechanism includes a chuck rotation driving motor 220, which is connected to the synchronous pulley 126 through a synchronous belt mechanism, thereby driving the chuck and the copper tube to rotate.

[0048] Of course, in the specific implementation process, the inner sleeve 120 can also be driven to rotate by a motor in conjunction with a gear set, which will not be described in detail here.

[0049] According to some embodiments of the present invention, Figure 4As shown, the circular cutting tool group 210 includes two groups of supporting rollers 231 arranged at the open end of the elastic chuck 131, and a roller 232 arranged opposite to the two groups of supporting rollers 231. The roller 232 is rotatably arranged on a roller frame 233. The circular cutting tool group 210 also includes a roller feed mechanism 234 that can drive the roller frame 233 to move away from or close to the two groups of supporting rollers 231. After the copper tube passes through the rotary chuck, hydraulic oil is injected to clamp the copper tube, and the roller 232 is pressed down. At the same time, the chuck rotation drive mechanism drives the copper tube to rotate, and the copper tube can be cut.

[0050] According to some embodiments of the present invention, Figure 4 As shown, the hob feed mechanism 234 is a cylinder fixedly arranged on the mounting seat 110, and the top rod of the cylinder is connected to the hob frame 233, and the hob feed is driven by the cylinder.

[0051] Of course, in the specific implementation process, the hob feed mechanism 234 can also be a screw drive mechanism, which will not be described in detail here.

[0052] It is easy for those skilled in the art to understand that the above preferred embodiments can be freely combined and superimposed without conflict.

[0053] The embodiments of the present invention are described in detail above 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 scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. The rotary chuck of the casing machine is characterized by: include: A mounting seat (110), wherein a through hole (111) is provided in the mounting seat (110); An inner sleeve (120), wherein the inner sleeve (120) is rotatably disposed in the through hole (111); A clamping assembly, the clamping assembly comprising two groups of elastic chucks (131) arranged relatively in the inner hole of the inner sleeve (120), the conical elastic clamping end (131a) of the elastic chuck (131) facing 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 slidably arranged in the inner hole of the inner sleeve (120), the pushing blocks (132) are provided with conical holes (132a) corresponding to the conical elastic clamping ends (131a) of the elastic chucks (131), the two groups of pushing blocks (132) are arranged at intervals and a pushing oil chamber (133) is formed between the two groups of pushing blocks (132), and the mounting seat (110) is provided with an oil injection channel connected to the pushing oil chamber (133); A sealing structure (121) is arranged between the outer wall of the inner sleeve (120) and the inner wall of the through hole (111); the interval between the sealing structures (121) forms an oil filling chamber (122); an oil filling hole (112) connected to the oil filling chamber (122) is arranged on the mounting seat (110); an oil delivery hole (123) connected to the oil filling chamber (122) and the pushing oil chamber (133) is opened on the inner sleeve (120); the oil filling hole (112), the oil filling chamber (122) and the oil delivery hole (123) form an oil filling passage connected to the pushing oil chamber (133); The pushing block (132) is an annular structure, and mutually nested annular sleeve structures (134) are respectively arranged on opposite sides of the two groups of pushing blocks (132). The annular sleeve structure (134), the opposite side surfaces of the two groups of pushing blocks (132), and the inner hole wall of the inner sleeve (120) form the pushing oil chamber (133), and the two groups of pushing blocks (132) can slide relative to each other, so that the pushing oil chamber (133) can drive the two groups of pushing blocks (132) to slide relative to each other after oil is filled, and the annular sleeve structure (134) can prevent hydraulic oil from entering the elastic chuck (131).

2. The rotary chuck of the casing machine according to claim 1, characterized in that: The sealing structure (121) comprises an oil chamber sealing ring arranged between the outer wall of the inner sleeve (120) and the inner wall of the through hole (111).

3. The rotary chuck of the casing machine according to claim 1, characterized in that: 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 retaining ring (114) for shielding the bearing (113) is arranged at the edge of the through hole (111) of the mounting seat (110).

4. The rotary chuck of the casing machine according to claim 1, characterized in that: A limiting structure capable of limiting the sliding of the elastic clamp (131) is arranged in the inner sleeve (120), and the limiting structure comprises end covers (124) fixedly arranged at both ends of the inner sleeve (120), and the end covers (124) are provided with limiting holes (125) corresponding to the elastic clamp (131), and the elastic clamp (131) can be limited from sliding out of the inner sleeve (120) through the limiting holes (125).

5. The rotary chuck of the casing machine according to claim 4, characterized in that: A compression spring (140) is provided between the end cover (124) and the pushing block (132).

6. A cutting mechanism, characterized in that: It comprises a chuck rotation drive mechanism, a circular cutting knife group and a rotary chuck as claimed in any one of claims 1 to 5, wherein the chuck rotation drive mechanism can drive the inner sleeve (120) to rotate.

7. The cutting mechanism according to claim 6, characterized in that: A synchronous pulley (126) is fixedly arranged on the inner sleeve (120), and the chuck rotation drive mechanism comprises a chuck rotation drive motor (220), and the chuck rotation drive motor (220) is connected to the synchronous pulley (126) via a synchronous belt mechanism.

8. The cutting mechanism according to claim 6, characterized in that: The circular cutting tool set comprises two groups of supporting rollers (231) arranged at the open end of the elastic clamp (131), a roller (232) arranged opposite to the two groups of supporting rollers (231), the roller (232) being rotatably arranged on a roller frame (233), and the circular cutting tool set further comprises a roller feeding mechanism (234) capable of driving the roller frame (233) to move away from or close to the two groups of supporting rollers (231).

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