Laser pipe cutting chuck suitable for heavy load

Abstract

The utility model provides a laser pipe cutting chuck suitable for heavy load, which comprises a rack, a rear cover, a front cover, a four-suction clamping jaw, a synchronous driving mechanism and a rotary driving mechanism, a central hole is arranged at the center of the front cover, and two sliding chutes are respectively arranged on the front cover in the vertical direction and the left-right direction. The synchronous driving mechanism comprises toothed sliding blocks which are arranged in the four sliding grooves of the front cover in a sliding mode, and transmission gear sets which are arranged on one side of each sliding groove in the front cover in a rotating mode and are in meshing transmission connection with the corresponding toothed sliding blocks. The first gear ring and the second gear ring are rotatably arranged on the rear side of the front cover front and back and are in meshed transmission connection with the two transmission gear sets respectively, and the air cylinder is arranged on the rear side of the front cover and is in transmission connection with the first gear ring and the second gear ring respectively. The four clamping jaws are fixedly arranged on the four toothed sliding blocks respectively. Through structural improvement, the chuck is suitable for heavy load, and compared with similar chucks in the prior art, the chuck is simpler in structure, and the manufacturing cost is obviously reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of chucks, in particular to a laser tube cutting chuck suitable for heavy loads. Background Art

[0002] Laser tube cutting chuck is a necessary auxiliary tool for clamping the workpiece on the laser cutting production line. Such common chucks usually consist of a front cover, a rear cover, a pair of transverse jaws and a pair of longitudinal jaws movably arranged on the front cover, a cylinder driving the two pairs of jaws, a transmission mechanism arranged between the cylinder and the two pairs of jaws, a synchronization mechanism for achieving the synchronous movement of the two pairs of jaws, a frame as an installation base, and a rotation drive mechanism arranged on the frame for driving the overall rotation of other mechanisms except the frame. In order to improve the synchronous clamping accuracy and overcome the problem of the chuck structure being too complicated, the current chuck generally combines the transmission mechanism and the synchronization mechanism into one to form a synchronous drive mechanism. For example, the laser tube cutting chuck disclosed in the Chinese patent document with the authorization announcement number CN215846412U uses a flexible member such as a chain as a synchronous and transmission member. The chain is connected to the slider through a transmission rod so that the two pairs of claws move synchronously. Although it has good synchronization, this type of chuck cannot achieve heavy loads, that is, when the clamped work is large in size and weight, this type of chuck is not suitable. The gear rack transmission full-stroke heavy-duty laser tube cutting chuck disclosed in the Chinese patent document with the authorization announcement number CN217799643U solves the problem of being suitable for heavy loads, but its driving mechanism and synchronization mechanism are essentially two sets of mechanisms, and the overall structure is still complicated. Therefore, further improving the existing chucks of this type so that they can simplify the structure and reduce the manufacturing cost while being suitable for heavy loads is a technical problem that needs to be solved in the industry. Utility Model Content

[0003] The purpose of the utility model is to solve the problems existing in the prior art and provide a laser tube cutting chuck with improved structure suitable for heavy loads. Compared with the existing similar chucks, the structure is simpler and the manufacturing cost is reduced.

[0004] The technical solution of the utility model is as follows: the laser tube cutting chuck suitable for heavy loads of the utility model comprises a frame, a rear cover rotatably arranged on the frame, a front cover fixedly arranged on the front side of the rear cover, two vertical clamping jaws and two left and right clamping jaws movably arranged on the front side of the front cover, a synchronous driving mechanism arranged on the front cover for driving the two vertical clamping jaws and the two left and right clamping jaws to move synchronously respectively, and a rotating driving mechanism arranged on the frame, a center hole is arranged at the center of the front cover, and two vertical clamping jaws and two left and right clamping jaws are arranged on the front cover respectively. The slide groove has the structural characteristics as follows: the above-mentioned synchronous driving mechanism includes a toothed slider slidably arranged in each of the four slide grooves of the front cover, a group of transmission gear sets rotatably arranged on one side of each slide groove on the front cover and meshing and transmission connected with the corresponding toothed slider, a first gear ring and a second gear ring rotatably arranged on the rear side of the front cover and meshing and transmission connected with the two groups of transmission gear sets, and a cylinder arranged on the rear side of the front cover and transmission connected with the first gear ring and the second gear ring respectively; the above-mentioned four clamps are fixedly arranged on each of the four toothed sliders.

[0005] A further solution is that the first gear ring and the second gear ring 6 are both annular structural members with two sections of transmission teeth respectively provided on the outer circumferential surface.

[0006] A further solution is: there are two of the above-mentioned cylinders, each of which has a cylinder body and a piston rod, the cylinder bodies of the two cylinders are fixed between the front cover and the rear cover, and the piston rods of the two cylinders are drivingly connected to the first gear ring and the second gear ring respectively.

[0007] A further solution is: there are four of the above-mentioned cylinders, each of which has a cylinder body and a piston rod. The cylinder bodies of the four cylinders are fixed between the front cover and the rear cover. Two of the four cylinders are connected to the first gear ring by their piston rods; the other two cylinders are connected to the second gear ring by their piston rods.

[0008] A further solution is: a transmission tooth is provided on one side wall of the toothed slider; each transmission gear set includes a driving gear meshing with the transmission teeth of the first gear ring or the second gear ring, a group of slider driving gears arranged on the same side as the driving gear and driving the toothed slider to move together with the driving gear by meshing with the transmission teeth of the toothed slider, and a group of transition gears arranged in parallel with the driving gear and the slider driving gear for realizing the synchronous movement of each slider driving gear and the driving gear in the same direction.

[0009] A further solution is: there are four of the above-mentioned slider drive gears, including the first and second slider drive gears arranged adjacent to the above-mentioned driving gear, and the third and fourth slider drive gears arranged inwardly in sequence on the inner side of the second slider drive gear; accordingly, there are four transition gears, including a first transition gear that is simultaneously engaged with the driving gear and the first slider drive gear to make the first slider drive gear and the driving gear rotate in the same direction, a second transition gear that is simultaneously engaged with the driving gear and the second slider drive gear to make the second slider drive gear and the driving gear rotate in the same direction, a third transition gear that is simultaneously engaged with the second and third slider drive gears to make the third slider drive gear and the driving gear rotate in the same direction, and a fourth transition gear that is simultaneously engaged with the third and fourth slider drive gears to make the fourth slider drive gear and the driving gear rotate in the same direction.

[0010] The utility model has positive effects: through structural improvement, the power output by the cylinder is transmitted to the corresponding toothed slider by the first and second gear rings through the corresponding transmission gear set to make the clamping jaws move, and all components are meshing transmission, the transmission is powerful and reliable, and suitable for heavy loads; at the same time, the two clamping jaws 4 in the upper and lower directions and the left and right directions are driven simultaneously by the first and second gear rings, so the synchronization of the two pairs of clamping jaws is good; and compared with similar chucks in the prior art, the structure of the utility model is obviously simple, and the manufacturing cost is significantly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 for Figure 1 A schematic diagram of the structure of the middle front cover and some components arranged on the front cover;

[0013] Figure 3 It is a structural schematic diagram of the synchronous drive mechanism of the utility model;

[0014] Figure 4 For Figure 3 Schematic diagram of the structure with different viewing directions and the slider omitted.

[0015] The reference numerals in the above drawings are as follows:

[0016] Frame 1; rear cover 2; front cover 3, slide slot 31; clamping claw 4; rotation drive mechanism 5; synchronous drive mechanism 6, cylinder 61, mounting connecting rod 61-1, first gear ring 62, second gear ring 63, transmission gear set 64, driving gear 64-1, slider drive gear 64-2, first slider drive gear 64-2-1, second slider drive gear 64-2-2, third slider drive gear 64-2-3, fourth slider drive gear 64-2-4, transition gear 64-3, first transition gear 64-3-1, second transition gear 64-3-2, third transition gear 64-3-3, fourth transition gear 64-3-4, toothed slider 65; dust cover 7. DETAILED DESCRIPTION

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0018] (Example 1)

[0019] See Figures 1 to 4 The laser tube cutting chuck suitable for heavy loads of this embodiment is mainly composed of a frame 1, a rear cover 2, a front cover 3, a clamping jaw 4, a rotating drive mechanism 5, a synchronous drive mechanism 6 and a dust cover 7.

[0020] The frame 1 serves as the mounting base of the chuck of this embodiment. The rear cover 2 is a structural member that is generally circular and rotatably arranged on the frame 1. The structure of the frame 1 and the rear cover 2 and the arrangement of the rear cover 2 on the frame 1 are mature prior arts and will not be described in detail.

[0021] The front cover 3 is a structural member that is circular in shape as a whole. The front cover 3 is fixedly connected to the rear cover 2 and is arranged on the front side of the rear cover 2. Preferably, a dust cover 7 is arranged on the periphery between the front cover 3 and the rear cover 2. A clamp hole (not marked in the figure) is arranged in the middle of the front cover 3. Four slide grooves 31 are arranged on the front cover 3. The four slide grooves 31 are arranged two each in the vertical direction and the left and right direction on the front cover 3. The inner end of each slide groove 31 is communicated with the clamp hole in the middle of the front cover 3.

[0022] The clamping jaws 4 are movably arranged at the front side of the front cover 3. The clamping jaws 4 are provided with a pair of left and right and up and down directions, a total of four. The clamping jaws 4 are used to clamp the workpiece in a centered manner during use. The structure of the clamping jaws 4 is prior art and will not be described in detail.

[0023] The rotary drive mechanism 5 is arranged on the frame 1, and is used to drive the rear cover 2, the front cover 3, the clamping jaws 4 arranged on the rear cover 2 and the front cover 3, the synchronous drive mechanism 6 and other components to rotate as a whole, and finally realize the rotary processing of the workpiece clamped by the clamping jaws 4. The rotary drive mechanism 5 is a mature existing technology in the field of chucks, and its structure and working principle are not described in detail.

[0024] The synchronous drive mechanism 6 is used to drive the four clamping jaws 4 to move in pairs toward or away from each other to clamp or release the workpiece. In this embodiment, the synchronous drive mechanism 6 is mainly composed of a cylinder 61, a first gear ring 62, a second gear ring 63, a transmission gear set 64 and a toothed slider 65.

[0025] The cylinder 61 is used to provide the motive force for the movement of the clamping jaw 4. The cylinder 61 is a commercially available part and has a cylinder body and a piston rod. The cylinder body of the cylinder 61 is fixedly arranged on the mounting connecting rod 61-1 for fixing the front cover 3 and the rear cover 2. Two or four cylinders 61 can be provided, and preferably four cylinders 61 are provided. The first gear ring 62 and the second gear ring 63 are both annular structural members with two sections of transmission teeth on the outer circumference. The first gear ring 62 and the second gear ring 63 can be rotatably arranged between the front cover 3 and the rear cover 2 around the axis of the front cover 3. When two cylinders 61 are provided, the piston rod of one cylinder 61 is transmission-connected to the first gear ring 62, and the piston rod of the other cylinder 61 is transmission-connected to the second gear ring 63; when four cylinders 61 are provided, the piston rods of the two cylinders 61 are transmission-connected to the first gear ring 62, and the piston rods of the other two cylinders 61 are transmission-connected to the second gear ring 63. During operation, the cylinder 61 pushes the first gear ring 62 and the second gear ring 63 to rotate.

[0026] A transmission gear set 64 is rotatably provided on one side of each slide slot 31 on the front cover 3, a toothed slider 65 is slidably provided in each slide slot 31 of the front cover 3, and one of the four clamping jaws 4 is fixedly provided on each of the four toothed sliders 65. The two toothed sliders 65 in the upper and lower directions are respectively connected to the first gear ring 62 through a transmission gear set 64, and the two toothed sliders 65 in the left and right directions are respectively connected to the second gear ring 63 through a transmission gear set 64. Transmission teeth are provided on one side wall of the toothed slider 65.

[0027] As a specific implementation, the transmission gear set 64 includes a driving gear 64-1 that meshes with the transmission teeth of the first gear ring 62 or the second gear ring 63, a group of slider driving gears 64-2 that are arranged on the same side as the driving gear 64-1 and drive the toothed slider 65 to move together with the driving gear 64-1 by meshing with the transmission teeth of the toothed slider 65, and a group of transition gears 64-3 that are arranged in parallel with the driving gear 64-1 and the slider driving gear 64-2 to achieve the same direction and synchronous movement of each slider driving gear 64-2 and the driving gear 64-1. In this embodiment, there are four slider driving gears 64-2, namely, a first slider driving gear 64-2-1 and a second slider driving gear 64-2-2 arranged adjacent to the driving gear 64-1, and a third slider driving gear 64-2-3 and a fourth slider driving gear 64-2-4 arranged inside the second slider driving gear 64-2-2 are arranged inwardly in sequence; accordingly, there are also four transition gears 64-3, including a first transition gear 64-3-1 that meshes with the driving gear 64-1 and the first slider driving gear 64-2-1 at the same time to make the rotation direction of the first slider driving gear 64-2-1 the same as the rotation direction of the driving gear 64-1, and a first transition gear 64-3-1 that meshes with the driving gear 64-1 and the second slider driving gear 64-2-2 at the same time to make the first slider driving gear 64-2-1 rotate in the same direction as the driving gear 64-1. The slider driving gear 64-2-2 is meshed with the second transition gear 64-3-2, which is used to make the rotation direction of the second slider driving gear 64-2-2 the same as the rotation direction of the driving gear 64-1, and is also meshed with the third transition gear 64-3-3, which is used to make the rotation direction of the third slider driving gear 64-2-3 the same as the rotation direction of the driving gear 64-1, and is also meshed with the third slider driving gear 64-2-3 and the fourth slider driving gear 64-2-4, which is used to make the rotation direction of the fourth slider driving gear 64-2-4 the same as the rotation direction of the driving gear 64-1.

[0028] When the heavy-load laser tube cutting chuck of this embodiment is working, the cylinder 61 drives the first gear ring 62 and the second gear ring 63 to rotate forward and reversely. The first gear ring 62 drives the two toothed sliders 65 in the upper and lower directions through the two transmission gear sets 64, so that the two upper and lower clamping jaws 4 fixed on the toothed sliders 65 move synchronously toward and away from the center; the second gear ring 63 drives the two toothed sliders 65 in the upper and lower directions through the other two transmission gear sets 64, so that the two left and right clamping jaws 4 fixed on the toothed sliders 65 move synchronously toward and away from the center.

[0029] As can be seen from the above, the power output by the cylinder 61 of the chuck of this embodiment is transmitted to the corresponding toothed slider 65 through the first gear ring 62 and the second gear ring 63 via the corresponding transmission gear set 64 to move the clamping jaw 4. All components are meshed transmission, and the transmission is powerful and reliable, suitable for heavy loads; at the same time, the two clamping jaws 4 in the upper and lower directions are driven by the first gear ring 62 at the same time, and the two clamping jaws 4 in the left and right directions are driven by the second gear ring 63 at the same time, so the synchronization of the two pairs of clamping jaws 4 is good. In addition, as can be seen from the above, the laser tube cutting chuck suitable for heavy loads of this embodiment has a significantly simpler structure and significantly reduced manufacturing cost compared to similar chucks in the prior art.

[0030] The above embodiments are descriptions of specific implementation methods of the present invention, rather than limitations of the present invention. Technical personnel in the relevant technical field can make various changes and modifications to obtain corresponding equivalent technical solutions without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should be included in the patent protection scope of the present invention.

Claims

1. A laser tube cutting chuck suitable for heavy loads, comprising a frame, a rear cover rotatably arranged on the frame, a front cover fixedly arranged on the front side of the rear cover, two vertical clamping jaws and two left and right clamping jaws movably arranged on the front side of the front cover, a synchronous driving mechanism arranged on the front cover for driving the two clamping jaws in the vertical direction and the left and right directions to move synchronously respectively, and a rotating driving mechanism arranged on the frame, a center hole is arranged at the center of the front cover, and two slide grooves are arranged on the front cover in the vertical direction and the left and right directions, characterized in that: The synchronous drive mechanism includes a toothed slider slidably arranged in each of the four slide grooves of the front cover, a group of transmission gear sets rotatably arranged on one side of each slide groove on the front cover and meshing and transmission connected with the corresponding toothed slider, a first gear ring and a second gear ring rotatably arranged on the rear side of the front cover and meshing and transmission connected with the two groups of transmission gear sets, and a cylinder arranged on the rear side of the front cover and transmission connected with the first gear ring and the second gear ring respectively; the four clamps are fixedly arranged on each of the four toothed sliders.

2. The heavy-load laser tube cutting chuck according to claim 1, characterized in that: The first gear ring and the second gear ring are both annular structural members with two sections of transmission teeth respectively arranged on the outer circumferential surface.

3. The heavy-load laser tube cutting chuck according to claim 1, characterized in that: There are two cylinders, each of which has a cylinder body and a piston rod. The cylinder bodies of the two cylinders are fixedly arranged between the front cover and the rear cover, and the piston rods of the two cylinders are drivingly connected to the first gear ring and the second gear ring respectively.

4. The laser tube cutting chuck suitable for heavy loads according to claim 1, characterized in that: There are four cylinders, each of which has a cylinder body and a piston rod. The cylinder bodies of the four cylinders are fixed between the front cover and the rear cover. Two of the four cylinders are connected to the first gear ring through their piston rods; the other two cylinders are connected to the second gear ring through their piston rods.

5. The heavy-load laser tube cutting chuck according to claim 2, characterized in that: A transmission tooth is provided on one side wall of the toothed slider; each transmission gear set includes a driving gear meshing with the transmission teeth of the first gear ring or the second gear ring, a group of slider driving gears arranged on the same side as the driving gear and driving the toothed slider to move by meshing with the transmission teeth of the toothed slider together with the driving gear, and a group of transition gears arranged in parallel with the driving gear and the slider driving gear for realizing the same-direction synchronous movement of each slider driving gear and the driving gear.

6. The heavy-load laser tube cutting chuck according to claim 5, characterized in that: There are four slider drive gears, including a first and a second slider drive gears arranged adjacent to the driving gear, and a third and a fourth slider drive gears arranged inwardly and arranged inside the second slider drive gear in sequence; accordingly, there are four transition gears, including a first transition gear that is simultaneously engaged with the driving gear and the first slider drive gear to make the first slider drive gear and the driving gear rotate in the same direction, a second transition gear that is simultaneously engaged with the driving gear and the second slider drive gear to make the second slider drive gear and the driving gear rotate in the same direction, a third transition gear that is simultaneously engaged with the second and third slider drive gears to make the third slider drive gear and the driving gear rotate in the same direction, and a fourth transition gear that is simultaneously engaged with the third and fourth slider drive gears to make the fourth slider drive gear and the driving gear rotate in the same direction.

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