Chuck for laser cutting production line

Abstract

The invention provides a chuck for a laser cutting production line. The chuck comprises a rack, a rear cover, a front cover, two up-down clamping jaws, two left-right clamping jaws, a power source for providing power for movement of the clamping jaws, a synchronous driving mechanism arranged on the front cover and used for driving the clamping jaws to synchronously move under the action of the power source, and a rotary driving mechanism used for driving the whole chuck to rotate. The synchronous driving mechanism comprises a power input shaft in transmission connection with the power output end of the power source, a power transmission main gear rotationally arranged on the power input shaft, a first gear ring and a second gear ring, wherein the first gear ring and the second gear ring are rotationally arranged on the inner side and the outer side of the first gear ring respectively and meshed with the power transmission main gear. The two first transmission gears are meshed with the first gear ring, the two second transmission gears are meshed with the second gear ring, and the four transmission assemblies are used for achieving transmission connection between the two first transmission gears and the two second transmission gears and the two clamping jaws in the vertical direction and the left-right direction correspondingly. Compared with an existing similar chuck, the clamping speed is higher, the efficiency is higher, the thrust is larger, and the cost performance is high.

Description

Technical Field

[0001] The invention relates to the technical field of chucks, and in particular to a chuck used in a laser cutting production line. Background Art

[0002] The chuck is a necessary auxiliary tool for clamping the workpiece on the laser cutting production line. According to the different positions on the production line, the chucks used in the laser cutting production line are divided into front chucks and tail chucks. The currently common front chuck is usually composed of a front cover, a rear cover, a pair of horizontal jaws and a pair of longitudinal jaws (also called jaws) movably arranged on the front cover, a power source (cylinder or motor, mostly cylinders) for driving the two pairs of jaws to move, a transmission mechanism between the power source and the two pairs of jaws, a synchronization mechanism for realizing the synchronous movement of the two pairs of jaws, a frame as an installation basis, and a rotation drive mechanism arranged on the frame for driving the front cover and the rear cover and the related mechanisms arranged thereon to rotate as a whole so that the two pairs of jaws can clamp the workpiece and rotate together during operation. In order to improve the precision of synchronous clamping workpieces and overcome the problem of overly complex chuck structures, with the development of technology, chucks generally combine transmission mechanisms and synchronization mechanisms into one to form a synchronous drive mechanism. Common synchronous drive mechanisms of chucks include lever type, chain sprocket type, gear rack type and other structures. Recently, gear ring type synchronous drive mechanisms have appeared, such as the application publication number CN The internal gear ring chuck disclosed in the Chinese patent document 115673363A uses a cylinder as a power source and two independent sets of synchronous drive mechanisms composed of two internal gear rings matched with gears to drive the movement of two pairs of jaws in the up and down directions and the left and right directions. Compared with the common gear rack type synchronous drive mechanism in the prior art, it can save installation space and chuck manufacturing cost, but the internal gear ring chuck still has the following shortcomings or areas for improvement: first, since the synchronous drive mechanism is two independently set sets, at least two power sources (cylinders) must be set before it can operate; second, due to its structural limitations, under the premise of the set overall size of the chuck, it can only install 4 power sources at most, so its maximum load is limited, and it cannot effectively adapt to the needs of heavy load (clamping heavy workpieces) during use; third, the speed at which the chuck clamps the workpiece needs to be improved to correspondingly improve the processing efficiency of the laser cutting production line. Summary of the invention

[0003] The purpose of the present invention is to provide a chuck for a laser cutting production line in order to solve the corresponding technical problems existing in the existing similar chucks.

[0004] The technical solution of the present invention is as follows: the chuck used in the laser cutting production line of the present invention 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 power source fixedly arranged on the front cover for providing power for the movement of the clamping jaws, a synchronous driving mechanism arranged on the front cover for making the two vertical clamping jaws and the two left and right clamping jaws move synchronously under the power of the power source, and a rotating driving mechanism for driving the rear cover, the front cover, the clamping jaws, and the synchronous driving mechanism to rotate as a whole, wherein the power source The source has a power output end, and its structural features are: the above-mentioned synchronous drive mechanism includes a power input shaft transmission-connected to the power output end of the above-mentioned power source, a power transmission main gear rotatably arranged on the power input shaft, a first gear ring and a second gear ring rotatably arranged inside and outside the front cover and both meshing with the above-mentioned power transmission main gear, two first transmission gears and two second transmission gears respectively meshing with the above-mentioned first gear ring and the second gear ring, and four sets of transmission components for realizing the transmission connection between the two first transmission gears and the two second transmission gears and the two up-and-down clamping jaws and the two left-and-right clamping jaws respectively.

[0005] A further solution is: the above-mentioned first gear ring is an annular structure with transmission teeth on the outer circumference, and the second gear ring is an annular structure with transmission teeth on the inner circumference. The inner diameter of the second gear ring is larger than the outer diameter of the first gear ring, and the first gear ring and the second gear ring are each meshed with the power transmission main gear through their transmission teeth.

[0006] A further solution is: four slide grooves are provided on the front cover in the vertical and left and right directions; the transmission assembly includes a fork connected to a corresponding transmission gear, and a slider connected to the fork and slidably arranged in a corresponding slide groove of the front cover; and one clamp is fixedly arranged on each slider.

[0007] A further solution is: the power source is provided with one, the power input shaft of the synchronous drive mechanism is provided with one, and the power transmission main gear is provided with one.

[0008] A further solution is: there are two of the above-mentioned power sources, there are two power input shafts of the above-mentioned synchronous drive mechanism, there are two power transmission main gears, the power output ends of the two power sources are respectively connected to a power input shaft, and the two power transmission main gears are rotatably arranged on each of the two power input shafts, and the two power transmission main gears are both engaged with the first ring gear and the second ring gear.

[0009] A further solution is: there are four of the above-mentioned power sources, there are two power input shafts of the above-mentioned synchronous drive mechanism, there are two power transmission main gears, the power output ends of two of the four power sources are transmission connected to one power input shaft, and the power output ends of the other two power sources are transmission connected to the other power input shaft; two power transmission main gears are rotatably arranged on each of the two power input shafts, and the two power transmission main gears are meshed with the above-mentioned first gear ring and the second gear ring; when working, the power output ends of the two power sources transmission connected to the same power input shaft adopt a push-pull matching mode of one extension and one contraction.

[0010] A further solution is: there are six of the above-mentioned power sources, there are four power input shafts of the above-mentioned synchronous drive mechanism, a power transmission main gear is rotatably arranged on each of the four power input shafts, and each power transmission main gear is meshed with the above-mentioned first ring gear and second ring gear; the power output ends of two of the six power sources are transmission connected to the first power input shaft of the four power input shafts, the power output ends of the other two power sources are transmission connected to the second power input shaft, and the power output ends of the last two power sources are transmission connected to the third and fourth power input shafts respectively. When working, the power output ends of the two power sources transmission connected to the same power input shaft adopt a push-pull matching mode of one extension and one contraction.

[0011] A further solution is that the power source is a cylinder.

[0012] A further solution is that the chuck for the laser cutting production line further includes a dust cover fixedly arranged on the outer periphery between the front cover and the rear cover.

[0013] A further solution is that the chuck used in the laser cutting production line further includes an accordion dust cover fixedly arranged at the front end of each of the four slide slots.

[0014] The present invention has positive effects: (1) Through the innovative design of the synchronous drive mechanism, the present invention has a larger load, faster clamping speed, higher efficiency, simpler structure and lower manufacturing cost compared with existing similar chucks under the condition of the same number of power sources; (2) Through the innovative design of the synchronous drive mechanism, the present invention can be operated with at least one power source, which is compared with the existing similar chucks that require at least two power sources, thereby saving manufacturing costs; (3) Due to the simple and innovative structural design of the synchronous drive mechanism, the present invention provides space for the installation of the power source. Under the condition of the same external dimensions, the present invention can break through the restriction that the existing similar chucks can only be equipped with a maximum of 4 power sources, so that the number of power sources installed can reach 6. Accordingly, the chuck of the present invention has a stronger load capacity and is suitable for heavy loads, and has a faster clamping speed and higher efficiency. Its cost performance is significantly better than that of existing similar chucks of the same size. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 For Figure 1 A schematic diagram of the planar structure of an embodiment when observing the rear side (i.e., the inner side) of the middle front cover; Figure 3 for Figure 2 Schematic diagram of the three-dimensional structure; Figure 4 For Figure 1 A schematic diagram of the three-dimensional structure of the second embodiment when viewed from the rear side of the middle front cover; Figure 5 For Figure 1 A schematic diagram of the three-dimensional structure of the third embodiment when viewed from the rear side of the middle front cover; Figure 6 For Figure 1 A schematic three-dimensional structural diagram of the fourth embodiment when viewed from the rear side of the middle front cover.

[0016] The reference numerals in the above drawings are as follows: Clamping jaw 1, up and down clamping jaw 11, left and right clamping jaw 12; front cover 2; rear cover 3; power source 4, power output terminal 41; synchronous drive mechanism 5, power input shaft 51, power transmission main gear 52, first ring gear 53, second ring gear 54, first transmission gear 55, second transmission gear 56, transmission assembly 57, fork 57-1, slider 57-2; frame 6; rotary drive mechanism 7; dust cover 8, accordion dust cover 9. DETAILED DESCRIPTION

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] (Example 1) See Figures 1 to 3 The chuck used in the laser cutting production line of this embodiment is mainly composed of a clamping jaw 1, a front cover 2, a rear cover 3, a power source 4, a synchronous driving mechanism 5, a frame 6, a rotating driving mechanism 7, a dust cover 8 and an accordion dust cover 9.

[0019] The clamping jaw 1 comprises two upper and lower clamping jaws 11 and two left and right clamping jaws 12 which are respectively arranged opposite to each other; the clamping jaw 1 is used to clamp the workpiece in a centered manner when in use. The clamping jaw 1 is a prior art, and its structure is not described in detail.

[0020] The front cover 2 and the rear cover 3 are both structural members that are in the shape of a circle as a whole; the front cover 2 is fixedly connected to the rear cover 3, and preferably, a dust cover 8 is provided on the periphery between the front cover 2 and the rear cover 3. A clamp hole (not marked in the figure) is provided in the middle of the front cover 2, and the front cover 2 is provided with two each in the up-down direction and the left-right direction, for a total of four slide grooves (not marked in the figure), and preferably, an accordion dust cover 9 is fixedly provided at the front end of each slide groove.

[0021] The power source 4 is used to provide the original power for the movement of the clamping jaw 1. The power source 4 can be a power device such as a cylinder, a motor, a hydraulic cylinder, etc. having a power output end 41. In this embodiment, the power source 4 is preferably a cylinder. As a basic implementation method, in this embodiment, a power source 4 is fixedly provided on the front cover 2.

[0022] The synchronous drive mechanism 5 is used to drive the four clamping jaws 1 to move in pairs toward or away from each other under the source power of the power source 4. The synchronous drive mechanism 5 is mainly composed of a power input shaft 51, a power transmission main gear 52, a first gear ring 53, a second gear ring 54, a first transmission gear 55, a second transmission gear 56 and a transmission assembly 57.

[0023] In this embodiment, in accordance with the fixed arrangement of the power source 4 on the front cover 2, one power input shaft 51 is provided, and correspondingly, one power transmission main gear 52 is provided, and the power transmission main gear 52 is rotatably provided on the power input shaft 51. The power input shaft 51 is transmission-connected with the power output end 41 of the power source 4. The first gear ring 53 is a circular ring-shaped structural member with transmission teeth on the outer circumference, and the second gear ring 54 is a circular ring-shaped structural member with transmission teeth on the inner circumference. The inner diameter of the second gear ring 54 is larger than the outer diameter of the first gear ring 53. The first gear ring 53 and the second gear ring 54 are each meshed with the power transmission main gear 52 by their transmission teeth, and are rotatably provided in the front cover 2 around the axis of the front cover 2. Two first transmission gears 55 and two second transmission gears 56 are each rotatably provided in the front cover 2, wherein the two first transmission gears 55 are both meshed with the first gear ring 53, and the two second transmission gears 56 are both meshed with the second gear ring 54. Each of the first transmission gear 55 and the second transmission gear 56 is connected to a clamping jaw 1 through a set of transmission components 57. There are four sets of transmission components 57, and the transmission components 57 can adopt corresponding mechanisms in the prior art. In this embodiment, each set of transmission components 57 includes a fork 57-1 connected to a corresponding transmission gear, and a slider 57-2 connected to the fork 57-1 and slidably arranged in a corresponding slide groove of the front cover; a clamping jaw 1 is fixedly arranged on each slider 57-2.

[0024] The frame 6 serves as the mounting base of the chuck of this embodiment. The aforementioned rear cover 3 is rotatably mounted on the frame 6 as in the prior art, and the specific mounting method is not described in detail.

[0025] The rotary drive mechanism 7 is used to drive the overall rotation of the rear cover 3, the front cover 2 and all mechanisms provided on the front cover 2 including the power source 4 and the synchronous drive mechanism 5, and finally realizes the rotation of the driving jaw 1. The rotary drive mechanism 7 is a mature prior art in the chuck field, and its structure and working principle are not described in detail.

[0026] The working principle and process of the chuck used in the laser cutting production line of this embodiment are briefly described as follows: The synchronous drive mechanism 5 of the chuck of this embodiment is composed of its power input shaft 51, power transmission main gear 52, first gear ring 53, second gear ring 54, first transmission gear 55 and second transmission gear 56 to form an efficient and reliable transmission mechanism similar to a planetary gear system. During operation, when the power output end 41 of the power source 4 extends outward, under the push of the power input shaft 51 of the synchronous drive mechanism 5, when the power transmission main gear 52 only revolves but does not rotate, the first gear ring 53 and the second gear ring 54 rotate at the same angular velocity; through the transmission of the two first transmission gears 55, the two second transmission gears 56 and the four transmission components 57, the two up-and-down clamping jaws 11 and the two left-and-right clamping jaws 12 perform a centripetal clamping action synchronously. If the workpiece is of the same size in the up-and-down direction and the left-and-right direction, such as a round tube or a square For a square tube, the two up-and-down clamping jaws 11 and the two left-and-right clamping jaws 12 move synchronously until the workpiece is clamped; if the workpiece is of different sizes in the up-and-down directions and the left-and-right directions, such as a rectangular tube, if the two up-and-down clamping jaws 11 have already clamped the workpiece, the first gear ring 53 stops rotating, the power transmission main gear 52 rotates counterclockwise while revolving, and the second gear ring 54 rotates at an angular velocity twice that of the power transmission main gear 52, driving the two left-and-right clamping jaws 12 to quickly clamp the workpiece; similarly, if the two left-and-right clamping jaws 12 have already clamped the workpiece, the second gear ring 54 stops rotating, the power transmission main gear 52 rotates clockwise while revolving, and the first gear ring 53 rotates at an angular velocity twice that of the power transmission main gear 52, driving the two up-and-down clamping jaws 11 to quickly clamp the workpiece. When the power output end 41 of the power source 4 retracts inward, the two up-and-down clamping jaws 11 and the two left-and-right clamping jaws 12 move in opposite directions to release the workpiece.

[0027] As can be seen from the foregoing, the chuck of this embodiment, through the structural design of its synchronous drive mechanism 5, can achieve the functions of similar chucks in the prior art with one power source (cylinder). Similar chucks in the prior art have two independently arranged synchronous drive mechanisms, so their power sources (cylinders) must be provided with at least two functions that can be realized. Under the same conditions, the chuck of this embodiment has a lower cost, and the chuck of this embodiment can clamp the workpiece faster and more efficiently when working.

[0028] (Example 2) See also Figure 4The chuck for the laser cutting production line of this embodiment is the same as that of the embodiment 1 in other aspects, except that in this embodiment, two power sources 4 are provided, and correspondingly, two power input shafts 51 of the synchronous drive mechanism 5 are provided, and two power transmission main gears 52 are provided. The installation and connection method of the newly added power source 4, one power input shaft 51 and one power transmission main gear 52 is the same as that of the aforementioned embodiment 1. The chuck of this embodiment has an increased thrust and a more balanced operation compared to the chuck of the embodiment 1, and its load capacity is equivalent to the chuck of the same type in the prior art that uses four power sources (cylinders).

[0029] (Example 3) See also Figure 5 The chuck used in the laser cutting production line of this embodiment is the same as that of embodiment 2 in other aspects, except that, in this embodiment, there are four power sources 4 (cylinders), and the power output ends 41 of two of the four power sources 4 are transmission-connected to the same power input shaft 51, and the power output ends 41 of the other two power sources 4 are transmission-connected to another power input shaft 51 at the same time; when working, the power output ends 41 of the two power sources 4 transmission-connected to the same power input shaft 51 adopt a push-pull matching mode of one extension and one contraction (i.e. one push and one pull). The chuck of this embodiment has a greater thrust than the chuck of embodiment 2. Compared with the similar chuck using four power sources (cylinders) in the prior art, the chuck of this embodiment has a larger load, a faster clamping speed, a higher efficiency, a simpler structure, and a lower manufacturing cost.

[0030] (Example 4) See also Figure 6 The chuck for the laser cutting production line of this embodiment is the same as that of embodiment 3 in other aspects, except that, in this embodiment, two more power sources 4 (cylinders) are added on the basis of embodiment 3 to reach six, and accordingly, two more power input shafts 51 of the synchronous drive mechanism 5 are added to reach four, and two more power transmission main gears 52 are added to reach four. Compared with embodiment 3, the two newly added power sources 4, two power input shafts 51 and two power transmission main gears 52 are divided into two groups, and are arranged in the installation and connection method of embodiment 1. The chuck of this embodiment provides space for the installation of the power source due to the simple and innovative structural design of its synchronous drive mechanism 5. Under the condition of the same external dimensions, the chuck of this embodiment can break through the restriction that the existing similar chuck can only be set with 4 power sources (cylinders) at most, so that the number of power sources installed can reach 6, and accordingly, the chuck of this embodiment has a stronger load capacity, is suitable for heavy loads, and has a faster clamping speed and higher efficiency, so that the cost performance of the chuck of this embodiment is significantly better than that of the existing similar chucks of the same size.

[0031] Referring to the above-mentioned embodiments 2 to 4, the chuck of the present invention can also be conveniently provided with 3 or 5 power sources 4. No further details will be given here.

[0032] 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 chuck for a laser cutting production line, comprising a frame, a rear cover rotatably mounted on the frame, a front cover fixedly mounted on the front side of the rear cover, two vertical clamping jaws and two left and right clamping jaws movably mounted on the front side of the front cover, a power source fixedly mounted on the front cover to provide power for the movement of the clamping jaws, a synchronous driving mechanism mounted on the front cover to synchronously move the two vertical clamping jaws and the two left and right clamping jaws under the power of the power source, and a rotating driving mechanism for driving the rear cover, the front cover, the clamping jaws, and the synchronous driving mechanism to rotate as a whole, wherein the power source has a power output end, and is characterized in that: The synchronous drive mechanism includes a power input shaft transmission-connected to the power output end of the power source, a power transmission main gear rotatably arranged on the power input shaft, a first gear ring and a second gear ring rotatably arranged inside and outside the front cover and both meshing with the power transmission main gear, two first transmission gears and two second transmission gears respectively meshing with the first gear ring and the second gear ring, and four transmission components for realizing transmission connection between the two first transmission gears and the two second transmission gears and the two up-and-down clamping jaws and the two left-and-right clamping jaws respectively.

2. The chuck for the laser cutting production line according to claim 1, characterized in that: The first gear ring is an annular structure with transmission teeth on its outer circumference, and the second gear ring is an annular structure with transmission teeth on its inner circumference. The inner diameter of the second gear ring is larger than the outer diameter of the first gear ring. The first gear ring and the second gear ring are each meshed with the power transmission main gear through their transmission teeth.

3. The chuck for the laser cutting production line according to claim 1, characterized in that: The front cover is provided with four slide grooves in the vertical direction and the left and right direction. The transmission assembly includes a fork connected to a corresponding transmission gear, and a slider connected to the fork and slidably arranged in a corresponding slide groove of the front cover; one clamp is fixedly arranged on each slider.

4. The chuck for the laser cutting production line according to claim 1, characterized in that: The power source is provided with one, the power input shaft of the synchronous drive mechanism is provided with one, and the power transmission main gear is provided with one.

5. The chuck for the laser cutting production line according to claim 1, characterized in that: There are two power sources, two power input shafts of the synchronous drive mechanism, two power transmission main gears, the power output ends of the two power sources are respectively connected to a power input shaft, two power transmission main gears are rotatably arranged on the two power input shafts, and the two power transmission main gears are meshed with the first gear ring and the second gear ring.

6. The chuck for the laser cutting production line according to claim 1, characterized in that: There are four power sources, two power input shafts of the synchronous drive mechanism, two power transmission main gears, the power output ends of two power sources among the four power sources are transmission connected with one power input shaft, and the power output ends of the other two power sources are transmission connected with another power input shaft; two power transmission main gears are rotatably arranged on each of the two power input shafts, and the two power transmission main gears are meshed with the first gear ring and the second gear ring; when working, the power output ends of the two power sources transmission connected with the same power input shaft adopt a push-pull matching mode of one extension and one contraction.

7. The chuck for the laser cutting production line according to claim 1, characterized in that: There are six power sources, and the synchronous drive mechanism has four power input shafts. A power transmission main gear is rotatably arranged on each of the four power input shafts, and each power transmission main gear is meshed with the first gear ring and the second gear ring; the power output ends of two of the six power sources are transmission connected to the first power input shaft of the four power input shafts, the power output ends of the other two power sources are transmission connected to the second power input shaft, and the power output ends of the last two power sources are transmission connected to the third and fourth power input shafts respectively. When working, the power output ends of the two power sources transmission connected to the same power input shaft adopt a push-pull matching mode of one extension and one contraction.

8. The chuck for a laser cutting production line according to any one of claims 1 to 7, characterized in that: The power source is a cylinder.

9. The chuck for the laser cutting production line according to claim 1, characterized in that: It also includes a dust cover fixedly arranged on the outer periphery between the front cover and the rear cover.

10. The chuck for the laser cutting production line according to claim 3, characterized in that: It also includes an accordion dust cover fixedly arranged at the front end of each of the four slide slots.

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