Chuck for laser cutting production line

Abstract

The chuck for laser cutting production line comprises a frame, a rear cover, a front cover, two clamping jaws in the up-down direction and two clamping jaws in the left-right direction, a power source for providing power for the movement of the clamping jaws, a synchronous driving mechanism arranged on the front cover and used for driving the synchronous movement of the clamping jaws under the action of the power source, and a rotary driving mechanism for driving the overall rotation of the chuck. 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 rotatably arranged on the power input shaft, a first gear ring and a second gear ring rotatably arranged on the inner side and the outer side and in meshing connection with the power transmission main gear, two first transmission gears and two second transmission gears in meshing connection with the first gear ring and the second gear ring respectively, and four sets of transmission assemblies for realizing the transmission connection between the two first and second transmission gears and the two clamping jaws in the up-down direction and the left-right direction. Compared with the existing similar chuck, the chuck has faster clamping speed, higher efficiency, larger thrust and high cost performance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of chucks, in particular to a chuck for a laser cutting production line. BACKGROUND

[0002] A chuck is a necessary auxiliary tool for clamping a workpiece on a laser cutting production line. According to the position set on the production line, the chuck for a laser cutting production line is divided into a front chuck and a rear chuck. The common front chuck usually comprises a front cover, a rear cover, a pair of transverse clamping jaws and a pair of longitudinal clamping jaws (also known as clamping jaws) movably arranged on the front cover, a power source (cylinder or motor, mostly cylinder) for driving the movement of the two pairs of clamping jaws, a transmission mechanism arranged between the power source and the two pairs of clamping jaws, a synchronous mechanism for realizing the synchronous movement of the two pairs of clamping jaws, a rack as a mounting base, and a rotary driving mechanism arranged on the rack for driving the front cover and the rear cover and the related mechanisms arranged thereon to rotate together so that the two pairs of clamping jaws can clamp the workpiece to rotate. In order to improve the precision of synchronous clamping of the workpiece and overcome the problem of too complex structure of the chuck, with the development of technology, the transmission mechanism and the synchronous mechanism are generally combined into one synchronous driving mechanism. The common synchronous driving mechanisms of the chuck include lever type, chain and sprocket type, gear and rack type, etc. Recently, the gear and ring gear type synchronous driving mechanism has appeared. For example, the inner ring gear chuck disclosed in the Chinese patent document with the application publication number CN115673363A uses a cylinder as a power source and two inner ring gears matched with gears as the main body to form two independent synchronous driving mechanisms to drive the upward and downward movement and the leftward and rightward movement of the two pairs of clamping jaws. Compared with the common gear and rack type synchronous driving mechanism in the prior art, it can save installation space and reduce the manufacturing cost of the chuck. However, the inner ring gear chuck still has the following deficiencies or improvements: first, since the synchronous driving mechanism is independently arranged in two sets, at least two cylinders are needed to operate; second, due to the limitation of its structure, under the premise of the set overall size of the chuck, it can at most install four power sources, so its maximum load is limited and cannot effectively meet the needs of heavy load (clamping heavy workpieces) in use; third, the clamping speed of the chuck needs to be improved to correspondingly improve the processing efficiency of the laser cutting production line. SUMMARY

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

[0004] The technical scheme of the present application is: the chuck for the laser cutting production line, comprising a rack, a rear cover rotatably arranged on the rack, a front cover fixedly arranged on the front side of the rear cover, two upper and lower 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 to provide power for the movement of the clamping jaws, a synchronous driving mechanism arranged on the front cover to synchronously move the two upper and lower 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 the structure is characterized in that: 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 rotatably arranged on the power input shaft, a first gear ring and a second gear ring rotatably arranged on the inside of the front cover and in meshing connection with the power transmission main gear, two first transmission gears and two second transmission gears in meshing connection with the first gear ring and the second gear ring respectively, and four sets of transmission assemblies for achieving the transmission connection between the two first transmission gears, the two second transmission gears, the two upper and lower clamping jaws and the two left and right clamping jaws.

[0005] Further, the first gear ring is a circular structure with transmission teeth on the outer periphery, the second gear ring is a circular structure with transmission teeth on the inner periphery, the inner diameter of the second gear ring is greater than the outer diameter of the first gear ring, and the first gear ring and the second gear ring are each in meshing connection with the power transmission main gear through the transmission teeth thereof.

[0006] Further, the front cover is provided with four sliding grooves in the upper and lower directions and the left and right directions, the transmission assembly comprises a pull fork in transmission connection with a corresponding transmission gear, and a sliding block in slidable connection with the corresponding sliding groove of the front cover through the transmission connection of the pull fork; and the clamping jaws are fixedly arranged on each sliding block.

[0007] Further, the power source is provided with one, the power input shaft of the synchronous driving mechanism is provided with one, and the power transmission main gear is provided with one.

[0008] Further, the power source is provided with two, the power input shaft of the synchronous driving mechanism is provided with two, the power transmission main gear is provided with two, the power output ends of the two power sources are each in transmission connection with one power input shaft, one power transmission main gear is rotatably arranged on each of the two power input shafts, and the two power transmission main gears are each in meshing connection with the first gear ring and the second gear ring.

[0009] Further, the power source is provided with four, the power input shaft of the synchronous drive mechanism is provided with two, the power transmission main gear is provided with two, the power output end of two power sources in the four power sources is in transmission connection with one power input shaft, the power output end of the other two power sources is in transmission connection with the other power input shaft; two power transmission main gears are rotatably arranged on the two power input shafts respectively, and the two power transmission main gears are in meshing connection with the first gear ring and the second gear ring; during operation, the power output end of the two power sources in transmission connection with the same power input shaft adopts a push-pull cooperation mode of one stretching and one shrinking.

[0010] Further, the power source is provided with six, the power input shaft of the synchronous drive mechanism is provided with four, the power transmission main gear is rotatably arranged on the four power input shafts respectively, and each power transmission main gear is in meshing connection with the first gear ring and the second gear ring; the power output end of two power sources in the six power sources is in transmission connection with the first power input shaft in the four power input shafts, the power output end of the other two power sources is in transmission connection with the second power input shaft, the power output end of the last two power sources is in transmission connection with the third and fourth power input shafts respectively, and during operation, the power output end of the two power sources in transmission connection with the same power input shaft adopts a push-pull cooperation mode of one stretching and one shrinking.

[0011] Further, the power source is a cylinder.

[0012] Further, the chuck for the laser cutting production line further comprises a dust cover fixedly arranged on the outer periphery between the front cover and the rear cover.

[0013] Further, the chuck for the laser cutting production line further comprises a dust cover fixedly arranged on the outer periphery between the front cover and the rear cover.

[0014] The present application has the following advantages: (1) the present application has a larger load, a faster speed, a higher efficiency, a simpler structure and a lower manufacturing cost than the existing similar chuck under the condition of the same number of power sources; (2) the present application can operate with only one power source, which is less than the existing similar chuck that needs at least two power sources, thereby saving the manufacturing cost; (3) the present application provides space for the installation of the power source due to the simple and innovative structure of the synchronous drive mechanism, and can break through the restriction of the existing similar chuck that can only be provided with four power sources under the condition of the same external size, so that the number of installed power sources can reach six, thereby making the load capacity of the present application stronger, suitable for heavy load, faster speed and higher efficiency, and the cost performance is obviously better than the existing similar chuck of the same size. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present application;

[0016] Figure 2 is a schematic diagram of the planar structure of an embodiment when viewed from the rear side (i.e. the inner side) of the front cover in Figure 1 ;

[0017] Figure 3 is a schematic diagram of the perspective structure of Figure 2 ;

[0018] Figure 4 is a schematic diagram of the perspective structure of a second embodiment when viewed from the rear side of the front cover in Figure 1 ;

[0019] Figure 5 is a schematic diagram of the perspective structure of a third embodiment when viewed from the rear side of the front cover in Figure 1 ;

[0020] Figure 6 is a schematic diagram of the perspective structure of a fourth embodiment when viewed from the rear side of the front cover in Figure 1 .

[0021] The reference signs in the above-mentioned drawings are as follows:

[0022] clamping jaw 1, upward clamping jaw 11, lateral clamping jaw 12; front cover 2; rear cover 3; power source 4, power output end 41; synchronous driving 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, pull fork 57-1, sliding block 57-2; frame 6; rotary driving mechanism 7; dust cover 8, organ dust cover 9. DETAILED DESCRIPTION

[0023] The present application will be further described in detail below in conjunction with the drawings and specific embodiments.

[0024] (Embodiment 1)

[0025] See Figures 1 to 3 , the chuck for the laser cutting production line of the present embodiment is mainly composed of clamping jaw 1, front cover 2, rear cover 3, power source 4, synchronous driving mechanism 5, frame 6, rotary driving mechanism 7, dust cover 8 and organ dust cover 9.

[0026] Clamping jaw 1 includes two upward clamping jaws 11 and two lateral clamping jaws 12 which are oppositely arranged respectively; clamping jaw 1 is used to implement centering clamping of the workpiece being processed. Clamping jaw 1 is a prior art, and its structure will not be described in detail.

[0027] The front cover 2 and the rear cover 3 are both integral circular structural members; the front cover 2 is fixedly connected with the rear cover 3, and preferably, a dust cover 8 is arranged between the outer periphery of the front cover 2 and the rear cover 3. The front cover 2 is provided with a clamp hole (not labeled in the figure) in the middle, and is provided with four slide grooves in total, two in the upward and downward directions and two in the leftward and rightward directions (not labeled in the figure), and preferably, each of the slide grooves is fixedly provided with an organ dust cover 9 at the front end.

[0028] The power source 4 is used to provide the motive power for the movement of the clamping jaws 1, and can adopt a power device such as a cylinder, a motor, a hydraulic cylinder, etc. with a power output end 41, and in the embodiment, the power source 4 preferably adopts a cylinder. As a basic implementation manner, in the embodiment, the power source 4 is fixedly arranged on the front cover 2.

[0029] The synchronous driving mechanism 5 is used to drive the four clamping jaws 1 to move towards or away from each other synchronously under the action of the motive power of the power source 4. The synchronous driving mechanism 5 mainly comprises 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.

[0030] In the embodiment, one power input shaft 51 is arranged corresponding to the one power source 4 fixedly arranged on the front cover 2, and correspondingly, one power transmission main gear 52 is arranged, which is rotatably arranged on the power input shaft 51. The power input shaft 51 is in transmission connection with the power output end 41 of the power source 4. The first gear ring 53 is a circular ring-shaped structural member provided with transmission teeth on the outer periphery, and the second gear ring 54 is a circular ring-shaped structural member provided with transmission teeth on the inner periphery, and the inner diameter of the second gear ring 54 is greater than the outer diameter of the first gear ring 53. The first gear ring 53 and the second gear ring 54 are each rotatably arranged in the front cover 2 by being meshed with the power transmission main gear 52 through the transmission teeth thereof. Two first transmission gears 55 and two second transmission gears 56 are each rotatably arranged in the front cover 2, wherein the two first transmission gears 55 are each meshed with the first gear ring 53, and the two second transmission gears 56 are each meshed with the second gear ring 54. Each of the first transmission gears 55 and the second transmission gears 56 is in transmission connection with one clamping jaw 1 through a set of transmission assemblies 57. Four sets of transmission assemblies 57 are arranged, which can adopt corresponding mechanisms in the prior art, and each set of transmission assemblies 57 in the embodiment comprises a pull fork 57-1 in transmission connection with a corresponding transmission gear, and a sliding block 57-2 in slidable arrangement in a corresponding slide groove of the front cover through transmission connection with the pull fork 57-1; one clamping jaw 1 is fixedly arranged on each sliding block 57-2.

[0031] The rack 6 serves as the mounting base of the chuck of the embodiment, and the aforementioned rear cover 3 is rotatably arranged on the rack 6 in the prior art, and the specific arrangement manner is not described herein.

[0032] The rotating driving mechanism 7 is used to drive the rotation of the rear cover 3, the front cover 2, and all the mechanisms including the power source 4 and the synchronous driving mechanism 5 arranged on the front cover 2, and finally to drive the rotation of the clamping jaw 1. The rotating driving mechanism 7 is a mature technology in the chuck field, and its structure and working principle are not described herein.

[0033] The working principle and process of the chuck for the laser cutting production line of the embodiment are briefly described as follows:

[0034] The synchronous driving mechanism 5 of the chuck of the embodiment is 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, and a second transmission gear 56, which form a high-efficiency and reliable transmission mechanism similar to a planetary gear system. In the working process, when the power output end 41 of the power source 4 is extended outward, the first gear ring 53 and the second gear ring 54 rotate at the same angular velocity under the pushing of the power input shaft 51 of the synchronous driving mechanism 5 when the power transmission main gear 52 only revolves without rotating by itself. Through the transmission of the two first transmission gears 55, the two second transmission gears 56, and the four transmission assemblies 57, the two upward and downward clamping jaws 11 and the two left and right clamping jaws 12 are driven to synchronously perform the centripetal clamping action. If the workpiece is a circular tube or a square tube with the same size in the upward and downward directions and the left and right directions, the two upward and downward clamping jaws 11 and the two left and right clamping jaws 12 are synchronously moved until the workpiece is clamped. If the workpiece is a rectangular tube with different sizes in the upward and downward directions and the left and right directions, if the two upward and downward clamping jaws 11 have clamped the workpiece in advance, the first gear ring 53 stops rotating at this time, the power transmission main gear 52 rotates counterclockwise while revolving, and the second gear ring 54 rotates at twice the angular velocity of the power transmission main gear 52, thereby 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 clamped the workpiece in advance, the second gear ring 54 stops rotating at this time, the power transmission main gear 52 rotates clockwise while revolving, and the first gear ring 53 rotates at twice the angular velocity of the power transmission main gear 52, thereby driving the two upward and downward clamping jaws 11 to quickly clamp the workpiece. When the power output end 41 of the power source 4 is retracted inward, the two upward and downward clamping jaws 11 and the two left and right clamping jaws 12 move in opposite directions to release the workpiece.

[0035] As can be seen from the foregoing, the chuck of the embodiment can realize the functions that the same type of chuck in the prior art can realize by using one power source (cylinder) through the structural design of the synchronous driving mechanism 5 thereof, compared with the same type of chuck in the prior art whose synchronous driving mechanism is independently arranged in two sets, and the power source (cylinder) thereof needs to be arranged in at least two sets. Under the same conditions, the chuck of the embodiment has a lower cost, and the chuck of the embodiment has a faster clamping speed and higher efficiency when clamping the workpiece in the working process.

[0036] (Embodiment 2)

[0037] With reference to Figure 4 The chuck for laser cutting production line of the present embodiment is the same as that of embodiment 1 except that two power sources 4 are provided in the present embodiment, and correspondingly, two power input shafts 51 and two power transmission main gears 52 are provided. The mounting and connecting modes of the newly added one power source 4, one power input shaft 51 and one power transmission main gear 52 are the same as those of the aforementioned embodiment 1. The chuck of the present embodiment has increased thrust and more balanced operation compared with the chuck of embodiment 1, and its load capacity is equivalent to that of the chuck of the prior art with four power sources (cylinders).

[0038] (Embodiment 3)

[0039] With reference to Figure 5 The chuck for laser cutting production line of the present embodiment is the same as that of embodiment 2 except that four power sources 4 (cylinders) are provided in the present embodiment, and the power output ends 41 of two of the four power sources 4 are drivingly connected to the same power input shaft 51, and the power output ends 41 of the other two power sources 4 are simultaneously drivingly connected to the other power input shaft 51; during operation, the power output ends 41 of the two power sources 4 drivingly connected to the same power input shaft 51 adopt a push-pull cooperation mode of one extension and one contraction (i.e. one push and one pull). The chuck of the present embodiment has greater thrust compared with the chuck of embodiment 2. Compared with the similar chuck of the prior art with four power sources (cylinders), the chuck of the present embodiment has greater load, faster clamping speed, higher efficiency, simpler structure and lower manufacturing cost.

[0040] (Embodiment 4)

[0041] With reference to Figure 6 The chuck for laser cutting production line of the present embodiment is the same as that of embodiment 3 except that two more power sources 4 (cylinders) are provided in the present embodiment based on embodiment 3, and correspondingly, two more power input shafts 51 and two more power transmission main gears 52 are provided, making a total of four power input shafts 51 and four power transmission main gears 52. The two newly added power sources 4, two power input shafts 51 and two power transmission main gears 52 of embodiment 3 are set in two groups and arranged in the mounting and connecting mode of embodiment 1. The chuck of the present embodiment, due to the simple and innovative structural design of its synchronous driving mechanism 5, provides space for the installation of power sources. Under the condition of the same external size, the chuck of the present embodiment breaks through the restriction that the maximum number of power sources (cylinders) that can be provided in the similar chucks of the prior art is four, so that the number of power sources installed in the chuck of the present embodiment can reach six, and correspondingly, the load capacity of the chuck of the present embodiment is stronger, suitable for heavy load, and the chuck of the present embodiment has faster clamping speed, higher efficiency, and the performance-price ratio of the chuck of the present embodiment is obviously superior to that of the similar chuck of the prior art with the same size.

[0042] Referring to the foregoing embodiments 2 to 4, the chuck of the present application can also be easily implemented to provide the arrangement of three or five power sources 4. Details thereof will not be described herein.

[0043] The above embodiments are illustrative of the specific implementation of the present application, but not a limitation thereof. Those skilled in the art can make various transformations and changes without departing from the spirit and scope of the present application, and obtain corresponding equivalent technical solutions. Therefore, all equivalent technical solutions should be included in the patent protection scope of the present application.

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 grippers and two horizontal grippers 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 grippers, a synchronous drive mechanism mounted on the front cover for synchronizing the movement of the two vertical grippers and the two horizontal grippers under the power of the power source, and a rotary drive mechanism for driving the rear cover, front cover, grippers, and synchronous drive mechanism to rotate as a whole, wherein the power source has a power output end, characterized in that: The synchronous drive mechanism includes a power input shaft that is driven to the power output end of the power source, a power transmission main gear rotatably mounted on the power input shaft, a first gear ring and a second gear ring that are rotatably mounted inside the front cover and mesh with the power transmission main gear, two first transmission gears and two second transmission gears that mesh with the first gear ring and the second gear ring respectively, and four sets of transmission components for realizing the corresponding transmission connection between the two first transmission gears and the two second transmission gears and the two vertical grippers and the two horizontal grippers; The first gear ring is a ring-shaped structural component with transmission teeth on its outer circumference, and the second gear ring is a ring-shaped structural component 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 main power transmission gear by their transmission teeth. The front cover has four sliding grooves in the vertical and horizontal directions. The transmission assembly includes a fork that is connected to a corresponding transmission gear, and a slider that is slidably disposed in a corresponding sliding groove of the front cover and connected to the fork. One gripper is fixedly disposed on each slider.

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

3. The chuck for a laser cutting production line according to claim 1, characterized in that: The power source is provided with two power input shafts, the synchronous drive mechanism is provided with two power transmission main gears, the power output end of each of the two power sources is connected to one power input shaft, and one of the two power transmission main gears is rotatably set on each of the two power input shafts, and both power transmission main gears mesh with the first gear ring and the second gear ring.

4. The chuck for a laser cutting production line according to claim 1, characterized in that: The power source is provided with four power sources, the synchronous drive mechanism has two power input shafts and two power transmission main gears. The power output ends of two of the four power sources are connected to one power input shaft, and the power output ends of the other two power sources are connected to the other power input shaft. One of the two power transmission main gears is rotatably mounted on each of the two power input shafts, and both power transmission main gears mesh with the first gear ring and the second gear ring. During operation, the power output ends of the two power sources connected to the same power input shaft adopt a push-pull engagement mode with one extending and the other retracting.

5. The chuck for a laser cutting production line according to claim 1, characterized in that: The power source is provided with six power sources, and the synchronous drive mechanism has four power input shafts. One power transmission main gear is rotatably set on each of the four power input shafts, and each power transmission main gear meshes with the first gear ring and the second gear ring. The power output ends of two of the six power sources are connected to the first power input shaft of the four power input shafts, the power output ends of the other two power sources are connected to the second power input shaft, and the power output ends of the last two power sources are connected to the third and fourth power input shafts respectively. During operation, the power output ends of the two power sources connected to the same power input shaft adopt a push-pull engagement mode of one extending and one retracting.

6. The chuck for a laser cutting production line according to any one of claims 1 to 5, characterized in that: The power source is a cylinder.

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

8. The chuck for a laser cutting production line according to claim 1, characterized in that: It also includes a accordion dust cover fixedly installed at the front end of each of the four slides.

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