Manual auxiliary clamping pneumatic chuck

Abstract

The utility model belongs to the technical field of chucks, and particularly relates to a manual auxiliary clamping pneumatic chuck which comprises a chuck body and an auxiliary clamping unit which are arranged side by side. The auxiliary clamping unit is located behind the chuck body and used for providing auxiliary supporting for the pipe fitting in the process that the chuck body loosens the pipe fitting so that the pipe fitting can extend forwards by the cutting length. The auxiliary clamping unit comprises a clamping base, a plurality of auxiliary clamping jaws distributed in the circumferential direction of the clamping base at intervals and a driving mechanism used for driving the auxiliary clamping jaws to clamp or loosen the pipe fitting. The auxiliary clamping unit is used for providing auxiliary supporting for the pipe fitting loosened by the chuck body, pipe fitting garland caused by mutual friction between the pipe fitting and the hole wall of the through hole of the chuck body when the pipe fitting is pulled can be avoided, and at the moment, the auxiliary clamping unit can provide initial positioning for the pipe fitting located in the auxiliary clamping unit; and the phenomenon that the pipe is inclined or damaged due to clamping when the main clamping jaw of the chuck main body is clamped again is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of chucks, and particularly relates to a manually assisted clamping pneumatic chuck. Background Art

[0002] A pneumatic chuck is generally used for clamping pipe fittings for cutting. It includes a disk body, a plurality of jaws arranged at intervals along the circumferential direction of the disk body, and a cylinder for driving the jaws to clamp or loosen the workpiece. A through hole for the pipe fitting to pass through is provided at the central part of the disk body.

[0003] When cutting pipe fittings, generally, a long pipe needs to be cut into multiple sections. When the jaws on the chuck clamp the pipe fitting, after the cutting device cuts off the part of the pipe fitting that extends forward from the jaws, the remaining pipe fitting needs to be pulled out by a predetermined length for the next cutting. Before the pipe fitting is pulled out, the jaws need to be loosened to release the clamping of the pipe fitting. When the output end of the cylinder retracts to drive the jaws to release the workpiece, the workpiece will fall into the through hole. It is necessary to drag the pipe fitting to make it extend. However, dragging will cause friction between the pipe fitting and the through hole, resulting in scratches on the surface of the pipe fitting. In addition, the aperture of the through hole is relatively large, and the pipe fitting that falls into the through hole often appears skewed or damaged when it is clamped next time. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is: to solve the problem that when the pneumatic chuck in the prior art loosens the pipe fitting for the next cutting, the pipe fitting will fall into the through hole, and it is necessary to drag the pipe fitting to make it extend. However, dragging will cause friction between the pipe fitting and the through hole, resulting in scratches on the surface of the pipe fitting. In addition, the pipe fitting that falls into the through hole often appears skewed or damaged when it is clamped next time. Now, a manually assisted clamping pneumatic chuck is provided.

[0005] The technical solution adopted by the utility model to solve its technical problem is: a manually assisted clamping pneumatic chuck, including a chuck body and an auxiliary clamping unit arranged side by side. The auxiliary clamping unit is located behind the chuck body and is used to provide auxiliary support for the pipe fitting during the process that the chuck body loosens the pipe fitting to make the pipe fitting extend forward by the cutting length.

[0006] The auxiliary clamping unit includes a clamping seat, a plurality of auxiliary jaws distributed at intervals along the circumferential direction of the clamping seat, and a driving mechanism for driving the auxiliary jaws to clamp or loosen the pipe fitting.

[0007] Further, there are four auxiliary jaws, including two relatively arranged transverse auxiliary jaws and two relatively arranged longitudinal auxiliary jaws.

[0008] Further, the driving mechanism is divided into a lateral driving mechanism for driving the lateral auxiliary jaws and a longitudinal driving mechanism for driving the longitudinal auxiliary jaws. Both the lateral driving mechanism and the longitudinal driving mechanism include a double-headed screw. The two lateral auxiliary jaws are respectively threadedly connected to the two threaded segments of the double-headed screw in the lateral driving mechanism, and the two longitudinal auxiliary jaws are respectively threadedly connected to the two threaded segments of the double-headed screw in the longitudinal driving mechanism.

[0009] Further, there are two lateral driving mechanisms and they are arranged side by side. There are also two longitudinal driving mechanisms and they are also arranged side by side.

[0010] Further, the lateral auxiliary jaws and the longitudinal auxiliary jaws are arranged in a staggered manner.

[0011] Further, a synchronization mechanism is provided between the two lateral driving mechanisms, and a synchronization mechanism is also provided between the two longitudinal driving mechanisms.

[0012] Further, the synchronization mechanism includes a first gear located at the end of the bidirectional screw, and a number of second gears are arranged between the two first gears on the two bidirectional screws to keep the two first gears rotating synchronously.

[0013] Further, a nut is provided at one end of the bidirectional screw away from the first gear.

[0014] Further, the chuck base includes a fixing portion for fixing to the chuck body and an installation portion extending from the fixing portion to the side away from the chuck body for installing the driving mechanism. The installation portion is a frame structure.

[0015] The beneficial effects of the present utility model are as follows: The present utility model uses the auxiliary clamping unit to provide auxiliary support for the pipe fittings released by the chuck body, which can avoid the pipe fittings from being scratched due to mutual friction between the pipe fittings and the hole wall of the through hole of the chuck body when pulling the pipe fittings. At this time, the auxiliary clamping unit can provide an initial positioning for the pipe fittings located inside it to avoid the pipe fittings from being skewed or damaged when the main jaws of the chuck body are clamped again.

[0016] Other features and advantages of the present application will become clear through the following detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings. Description of the Drawings

[0017] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0018] Figure 1 is a schematic structural diagram of the present utility model;

[0019] Figure 2 is a schematic structural diagram of the chuck body;

[0020] Figure 3 It is a three-dimensional schematic diagram of the auxiliary clamping unit;

[0021] Figure 4 It is a top view of the auxiliary clamping unit;

[0022] Figure 5 It is a side view of the auxiliary clamping unit;

[0023] Figure 6 It is a structural schematic diagram of the driving mechanism;

[0024] Figure 7 It is a structural schematic diagram of the lateral driving mechanism;

[0025] In the figure:

[0026] 1. Chuck body; 101. Disk body; 102. Main chuck jaw;

[0027] 2. Auxiliary clamping unit; 201. Clamping seat; 2011. Fixed part; 2012. Mounting part; 202. Auxiliary chuck jaw; 2021. Lateral auxiliary chuck jaw; 2022. Longitudinal auxiliary chuck jaw; 203. Driving mechanism; 2031. Lateral driving mechanism; 2032. Longitudinal driving mechanism; 2033. Nut; 204. Synchronization mechanism; 2041. First gear; 2042. Second gear. Detailed implementation mode

[0028] Now, the present utility model will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present utility model in a schematic manner. Therefore, they only show the components related to the present utility model. Directions and references (such as up, down, left, right, etc.) can only be used to assist in the description of the features in the drawings. Therefore, the following detailed implementation mode is not adopted in a restrictive sense, and the scope of the claimed subject matter is only defined by the appended claims and their equivalent forms.

[0029] As shown in Figure 1 and Figure 2 A manual auxiliary clamping pneumatic chuck includes a chuck body 1 and an auxiliary clamping unit 2 arranged side by side. The chuck body 1 includes a disk body 101 and a plurality of main chuck jaws 102 spaced circumferentially along the disk body 101. A first through hole for a pipe fitting to pass through is provided at the central part of the disk body 101. In this embodiment, the chuck body 1 has a four-jaw structure, that is, it has four main chuck jaws 102;

[0030] The auxiliary clamping unit 2 is located behind the chuck body 1 and is used to provide auxiliary support for the pipe fitting during the process of the chuck body 1 loosening the pipe fitting to enable the pipe fitting to extend forward by the cutting length;

[0031] The auxiliary clamping unit 2 includes a clamping seat 201, a plurality of auxiliary clamping jaws 202 spaced circumferentially along the clamping seat 201, and a driving mechanism 203 for driving the auxiliary clamping jaws 202 to clamp or release the pipe fitting. A second through hole for the pipe fitting to pass through is formed in the central part of the clamping seat 201, and the first through hole is communicated with the second through hole.

[0032] During cutting, the pipe fitting is sequentially passed through the second through hole and the first through hole and extends a predetermined distance out of the first through hole. Then, the air cylinder drives the plurality of main clamping jaws 102 of the plurality of chuck bodies 1 to move closer to the center until the pipe fitting is clamped. The driving mechanism 203 drives the plurality of auxiliary clamping jaws 202 to gradually approach the pipe fitting, but there is a gap between the auxiliary clamping jaws 202 and the outer wall of the pipe fitting. Then, the cutting device cuts off the extended part of the pipe fitting. Then, the air cylinder drives the plurality of main clamping jaws 102 of the chuck body 1 to move away from each other to release the pipe fitting. At this time, due to the existence of the auxiliary clamping jaws 202 of the auxiliary clamping unit 2, it can provide auxiliary support for the pipe fitting, so that the pipe fitting will not fall into the first through hole, and it can avoid the scratching of the pipe fitting caused by the mutual friction between the pipe fitting and the rough hole wall of the first through hole when pulling the pipe fitting. And due to the existence of the gap between the pipe fitting and the auxiliary clamping jaws 202, the pipe fitting can be pulled to make the pipe fitting continue to extend forward. At this time, the auxiliary clamping unit 2 can provide an initial positioning for the pipe fitting located inside it to avoid the phenomenon of skewing or clamping damage of the pipe fitting when the main clamping jaws 102 of the chuck body 1 are clamped again.

[0033] In some examples, such as Figures 3 - 5 shown, the auxiliary clamping jaws 202 have four, including two relatively arranged transverse auxiliary clamping jaws 2021 and two relatively arranged longitudinal auxiliary clamping jaws 2022. The two transverse auxiliary clamping jaws 2021 are used for transverse auxiliary clamping of the pipe fitting, and the two longitudinal auxiliary clamping jaws 2022 are used for longitudinal auxiliary clamping of the pipe fitting.

[0034] In some examples, such as Figure 6 and Figure 7 shown, the driving mechanism 203 is divided into a transverse driving mechanism 2031 for driving the transverse auxiliary clamping jaws 2021 and a longitudinal driving mechanism 2032 for driving the longitudinal auxiliary clamping jaws 2022. Both the transverse driving mechanism 2031 and the longitudinal driving mechanism 2032 include a double-headed screw. The two transverse auxiliary clamping jaws 2021 are respectively threadedly connected to the two threaded segments of the double-headed screw in the transverse driving mechanism 2031. When the double-headed screw rotates, it can drive the two transverse auxiliary clamping jaws 2021 to approach or move away from each other. The two longitudinal auxiliary clamping jaws 2022 are respectively threadedly connected to the two threaded segments of the double-headed screw in the longitudinal driving mechanism 2032. When the double-headed screw rotates, it can drive the two longitudinal auxiliary clamping jaws 2022 to approach or move away from each other.

[0035] In some examples, there are two lateral driving mechanisms 2031 which are arranged side by side and located at both ends of the lateral auxiliary jaw 2021, so as to leave the middle part of the lateral auxiliary jaw 2021 for clamping. There are also two longitudinal driving mechanisms 2032 which are also arranged side by side. Similarly, both are located at both ends of the longitudinal auxiliary jaw 2022, so as to leave the middle part of the longitudinal auxiliary jaw 2022 for clamping.

[0036] In some examples, as Figure 6 shown, the lateral auxiliary jaw 2021 and the longitudinal auxiliary jaw 2022 are arranged in a staggered manner, that is, the lateral auxiliary jaw 2021 and the longitudinal auxiliary jaw 2022 are distributed along the axial direction of the pipe fitting, so as to improve the clamping effect of the thin and straight pipe fitting.

[0037] In some examples, a synchronization mechanism 204 is provided between the two lateral driving mechanisms 2031, and a synchronization mechanism 204 is also provided between the two longitudinal driving mechanisms 2032.

[0038] In some examples, as Figure 5 shown, the synchronization mechanism 204 includes a first gear 2041 located at the end of the bidirectional screw. A number of second gears 2042 for keeping the two first gears 2041 rotating synchronously are arranged between the two first gears 2041 on the two bidirectional screws. The number of the second gears 2042 is odd, and can be one, three, etc. The specific number is determined by the stroke of the jaw.

[0039] In some examples, a nut 2033 is provided at one end of the bidirectional screw away from the first gear 2041. It is more labor-saving to rotate the bidirectional screw by screwing the nut 2033.

[0040] In some examples, the clamp seat 201 includes a fixing part 2011 for fixing with the chuck body 1 and an installation part 2012 extending from the fixing part 2011 to the side away from the chuck body 1 for installing the driving mechanism 203. The installation part 2012 is of a frame structure. The auxiliary jaw 202 is located inside the installation part 2012. The double-headed screw passes through the installation part 2012, and the nuts 2033 and the first gears 2041 located at both ends are both located outside the installation part 2012.

[0041] Based on the ideal embodiments of the present invention as the inspiration, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A manual-assisted clamping pneumatic chuck for clamping pipe fittings for cutting, characterized in that: It includes a chuck body (1) and an auxiliary clamping unit (2) arranged side by side. The auxiliary clamping unit (2) is located behind the chuck body (1) and is used to provide auxiliary support to the pipe fitting during the process that the chuck body (1) loosens the pipe fitting to enable the pipe fitting to extend forward by the cutting length. The auxiliary clamping unit (2) includes a clamping seat (201), a plurality of auxiliary jaws (202) circumferentially and spacedly distributed along the clamping seat (201), and a driving mechanism (203) for driving the auxiliary jaws (202) to clamp or loosen the pipe fitting.

2. The manually assisted clamping pneumatic chuck according to claim 1, characterized in that: There are four of the auxiliary jaws (202), including two relatively arranged transverse auxiliary jaws (2021) and two relatively arranged longitudinal auxiliary jaws (2022).

3. The manual-assisted clamping pneumatic chuck according to claim 2, characterized in that: The driving mechanism (203) is divided into a transverse driving mechanism (2031) for driving the transverse auxiliary jaws (2021) and a longitudinal driving mechanism (2032) for driving the longitudinal auxiliary jaws (2022). Both the transverse driving mechanism (2031) and the longitudinal driving mechanism (2032) include a double-headed screw. The two transverse auxiliary jaws (2021) are respectively threadedly connected to the two threaded segments of the double-headed screw in the transverse driving mechanism (2031), and the two longitudinal auxiliary jaws (2022) are respectively threadedly connected to the two threaded segments of the double-headed screw in the longitudinal driving mechanism (2032).

4. The manual-assisted clamping pneumatic chuck according to claim 3, wherein: There are two of the transverse driving mechanisms (2031) and they are arranged side by side. There are also two of the longitudinal driving mechanisms (2032) and they are also arranged side by side.

5. The manual-assisted clamping pneumatic chuck according to claim 2, wherein: The transverse auxiliary jaws (2021) and the longitudinal auxiliary jaws (2022) are arranged in a staggered manner.

6. The manual-assisted clamping pneumatic chuck according to claim 4, characterized in that: A synchronization mechanism (204) is provided between the two transverse driving mechanisms (2031), and a synchronization mechanism (204) is also provided between the two longitudinal driving mechanisms (2032).

7. The manually assisted clamping pneumatic chuck according to claim 6, wherein: The synchronization mechanism (204) includes a first gear (2041) located at the end of the double-headed screw. A number of second gears (2042) for keeping the two first gears (2041) rotating synchronously are arranged between the two first gears (2041) on the two double-headed screws.

8. The manual-assisted clamping pneumatic chuck according to claim 7, wherein: A nut (2033) is provided at one end of the double-headed screw away from the first gear (2041).

9. The manually-assisted clamping pneumatic chuck according to claim 1, wherein: The clamping seat (201) includes a fixing part (2011) for fixing to the chuck body (1) and an installation part (2012) extending from the fixing part (2011) to the side away from the chuck body (1) for installing the driving mechanism (203). The installation part (2012) is of a frame structure.

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