Double-gear full-stroke chuck structure

Abstract

The utility model discloses a double-gear full-stroke chuck structure which comprises a rotary supporting bearing, a front disc and a rear disc are installed on the two sides of the rotary supporting bearing respectively, the front disc and the rear disc are each provided with two sets of clamping jaw units used for clamping pipes, and each set of clamping jaw unit comprises two oppositely-arranged clamping jaw assemblies. The clamping jaw assembly comprises a guide rail fixed to the front disc or the rear disc, a sliding block capable of sliding relative to the guide rail is arranged on the guide rail, a rack structure is arranged on one side of the sliding rail, and a first driving pinion and a second driving pinion are arranged on one side of the sliding block. According to the structure, through the arrangement of a double-gear structure, the clamping jaws can be driven to move in sequence, then full-stroke driving of the clamping jaws is achieved, meanwhile, the double-gear driving mechanism is small in occupied space, and the clamping jaws can be driven to move in sequence. And the full-stroke clamping of the clamping jaw can be realized under the condition that the boundary dimension of the chuck is not increased too much.

Description

TECHNICAL FIELD

[0001] The utility model relates to the tooth disc field, especially in double gear full stroke chuck structure. BACKGROUND

[0002] In the current market, we can observe that most chuck structure designs adopt a single gear drive method. However, this design exhibits certain limitations in terms of stroke control and precision. Specifically, single gear driven chucks are limited in stroke length and cannot achieve complete driving of the entire stroke. Therefore, in those application scenarios that require clamping products of different sizes, single gear driven chucks often fail to achieve ideal results and are difficult to meet diversified production needs. SUMMARY

[0003] The technical problem solved by the utility model is to provide a double gear full stroke chuck structure that can increase the stroke of the jaw assembly.

[0004] The technical solution adopted by the utility model to solve its technical problem is as follows: a double gear full stroke chuck structure, comprising a rotary support bearing, a front disc and a rear disc are respectively installed on both sides of the rotary support bearing, two groups of jaw units for clamping pipes are arranged on the front disc and the rear disc, and each group of jaw units comprises two oppositely arranged jaw assemblies.

[0005] The jaw assembly comprises a guide rail fixed on the front disc or the rear disc, a sliding block that can slide relative to the guide rail is arranged on the guide rail, a rack structure is arranged on one side of the sliding rail, a first drive pinion and a second drive pinion are respectively arranged on one side of the sliding block, a gear drive mechanism that simultaneously drives the first drive pinion and the second drive pinion to rotate is further included, and the rack structure is at least engaged with the first drive pinion and the second drive pinion during the movement of the sliding block.

[0006] Two oppositely arranged jaw assemblies of the front disc are provided with zero tail material jaws.

[0007] Further, the gear drive mechanism comprises a drive rod, drive large gears are respectively arranged at both ends of the drive rod, a third drive pinion is arranged in the middle of the drive rod, the drive large gears at both ends of the drive rod are simultaneously engaged with the first drive pinion and the second drive pinion at the front disc and the rear disc, respectively, and a gear disc drive mechanism for driving the third drive pinion to rotate is further included.

[0008] Further, the gear disc drive mechanism comprises a gear disc, the gear disc is engaged with the third drive pinion, and a gear disc drive mechanism for driving the gear disc to move is further included.

[0009] The rotating driving mechanism comprises a cylinder, further comprises a cylinder rotating shaft, both ends of the cylinder rotating shaft are connected with the front disc and the rear disc respectively, a cylinder tail seat is arranged at the tail end of the cylinder, the cylinder tail seat is rotationally connected with the cylinder rotating shaft, a cylinder joint is arranged at the driving end of the cylinder, and a cantilever pin is further arranged, one end of the cantilever pin is rotationally connected with the tooth disc, and the other end of the cantilever pin is rotationally connected with the cylinder joint.

[0010] Further, the zero tail material clamping jaw comprises a zero tail material clamping block, one side of the zero tail material clamping block is provided with a zero tail material cylinder for driving the zero tail material clamping block to stretch out forward, and the side of the zero tail material clamping block facing the product is of a plane structure, and an anti-skid structure is arranged on the plane structure.

[0011] Further, the tooth disc is provided with two tooth discs, and the two tooth discs are used for driving two groups of clamping units to move relatively or oppositely.

[0012] Further, a tooth disc supporting ring is further arranged, the tooth disc supporting ring is fixedly connected on the front disc or the rear disc, the tooth disc is sleeved on the outer circumferential surface of the tooth disc supporting ring, so that the tooth disc can rotate relative to the front disc or the rear disc, and tooth disc blocking sheets for preventing the tooth disc from moving in the axial direction are further arranged on both sides of the tooth disc.

[0013] The beneficial effects of the utility model are:

[0014] 1. In the structure, the double gear structure is arranged, the clamping jaw can be sequentially driven to move, the full stroke driving of the clamping jaw is realized, the double gear driving mechanism occupies small space, the full stroke clamping of the clamping jaw can be realized under the condition that the appearance size of the chuck is not increased much, and the material cost is reduced.

[0015] 2. In the structure, the zero tail material clamping jaw is arranged, when the pipe is cut to the last end, the zero tail material clamping jaw can clamp the product independently, the chuck can be driven by an external mechanism to rotate and feed the pipe material, and then cutting is carried out, so that the zero tail material cutting is realized. DRAWINGS

[0016] Figure 1 It is a schematic view of the double gear full stroke chuck structure of the embodiment of the application.

[0017] Figure 2 It is a schematic view of the internal structure of the double gear full stroke chuck structure of the embodiment of the application.

[0018] Marked in the figure: support bearing 1, front disc 2, rear disc 3, jaw assembly 4, guide rail 41, sliding block 42, rack structure 43, first drive pinion 44, second drive pinion 45, zero tail clamp 5, zero tail clamp block 51, zero tail cylinder 52, drive rod 61, drive gear 62, third drive pinion 63, toothed disc 64, cylinder 65, cylinder shaft 66, cylinder tailstock 67, cylinder joint 68, cantilever pin 69. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model will be described in detail below with reference to the drawings.

[0020] As Figure 1 and Figure 2 The embodiment of the application discloses a double-gear full-stroke chuck structure, comprising a rotary support bearing 1, the rotary support bearing 1 is respectively provided with a front disc 2 and a rear disc 3 on both sides, two groups of jaw units for clamping pipes are arranged on the front disc 2 and the rear disc 3, and each group of jaw units comprises two oppositely arranged jaw assemblies 4.

[0021] The jaw assembly 4 comprises a guide rail 41 fixed on the front disc 2 or the rear disc 3, a sliding block 42 capable of sliding relative to the guide rail 41 is arranged on the guide rail 41, a rack structure 43 is arranged on one side of the sliding rail, a first drive pinion 44 and a second drive pinion 45 are arranged on one side of the sliding block 42 respectively, a gear drive mechanism for simultaneously driving the first drive pinion 44 and the second drive pinion 45 to rotate is further included, and the rack structure 43 is at least meshed with the first drive pinion 44 and the second drive pinion 45 during the movement of the sliding block 42.

[0022] Two oppositely arranged jaw assemblies 4 of the front disc 2 are provided with a zero tail clamp 5.

[0023] Specifically, during work, the jaw assemblies 4 on the front disc 2 and the rear disc 3 move synchronously or asynchronously through the gear drive mechanism. When the gear drive mechanism is started, the first drive pinion 44 and the second drive pinion 45 rotate synchronously, the rack structure 43 is meshed with the first drive pinion 44 and the second drive pinion 45 in turn along with the movement of the sliding block 42, so that the sliding block 42 slides on the guide rail 41, and the opening or closing action of the jaw assembly 4 is realized. In addition, when zero tail cutting is needed, the zero tail clamp 5 plays a key role. The zero tail clamp block 51 is driven by the cylinder 65 to stretch out forward and clamp the end of the pipe. Subsequently, under the driving of an external mechanism, the chuck clamps the pipe alone to rotate and feed, ensuring that the cutting process can be smoothly carried out and realizing the goal of zero tail cutting.

[0024] The double gear structure is arranged in the structure, the jaw movement can be sequentially driven, and the full stroke driving of the jaw is realized.

[0025] In the embodiment, the gear driving mechanism comprises a driving rod 61, the two ends of the driving rod 61 are respectively provided with driving gear wheels 62, the middle part of the driving rod 61 is provided with a third driving pinion 63, the driving gear wheels 62 at the two ends of the driving rod 61 are respectively engaged with the first driving pinion 44 and the second driving pinion 45 at the front disc 2 and the rear disc 3, and the gear disc driving mechanism for driving the third driving pinion 63 to rotate is further included.

[0026] Specifically, when driving, the gear disc driving mechanism is started, the gear disc 64 is engaged with the third driving pinion 63, and the driving rod 61 is driven to rotate. Since the driving gear wheels 62 at the two ends of the driving rod 61 are respectively engaged with the first driving pinion 44 and the second driving pinion 45 at the front disc 2 and the rear disc 3, the rotation of the driving rod 61 will synchronously drive the jaw assembly 4 on the front disc 2 and the rear disc 3 to move.

[0027] The above design not only realizes the full stroke driving of the double gear, but also ensures the stability and synchronism of the jaw assembly 4 in the movement process.

[0028] In the embodiment, the gear disc driving mechanism comprises a gear disc 64, the gear disc 64 is engaged with the third driving pinion 63, and the gear disc driving mechanism for driving the gear disc 64 to move is further included.

[0029] The rotating driving mechanism comprises a cylinder 65, further comprises a cylinder rotating shaft 66, the two ends of the cylinder rotating shaft 66 are respectively connected with the front disc 2 and the rear disc 3, the tail end of the cylinder 65 is provided with a cylinder tail seat 67, the cylinder tail seat 67 is rotationally connected with the cylinder rotating shaft 66, the driving end of the cylinder 65 is provided with a cylinder joint 68, further comprises a cantilever pin 69, one end of the cantilever pin 69 is rotationally connected with the gear disc 64, the other end of the cantilever pin 69 is rotationally connected with the cylinder joint 68.

[0030] Specifically, the cylinder 65 is connected with the cantilever pin 69 through the cylinder joint 68, when the driving end of the cylinder 65 is stretched and retracted, the cantilever pin 69 will swing, since one end of the cantilever pin 69 is rotationally connected with the gear disc 64, the swing of the cantilever pin 69 will be converted into the rotation of the gear disc 64.

[0031] The driving mode of the gear disc 64 driven by the cylinder 65 is not only simple in structure, but also has large driving force, and can ensure stable rotation of the gear disc 64. Meanwhile, in order to realize stable driving of the cylinder 65, the cylinder rotating shaft 66 is connected with the front disc 2 and the rear disc 3 at both ends, so that stable installation of the cylinder 65 is ensured. Meanwhile, the cylinder tail seat 67 is rotationally connected with the cylinder rotating shaft 66, so that the cylinder 65 can keep a stable rotating state during driving, and transmission error caused by shaking of the cylinder 65 is avoided.

[0032] In the embodiment, the tailless material clamping jaw 5 comprises a tailless material clamping block 51, one side of the tailless material clamping block 51 is provided with a tailless material cylinder 52 for driving the tailless material clamping block 51 to stretch out forward, and the side of the tailless material clamping block 51 facing the product is of a plane structure, and an anti-skid structure is arranged on the plane structure.

[0033] Specifically, when the pipe material is cut to the last stage, the tailless material clamping jaw 5 can clamp the product alone when the pipe is cut to the last end, and under the driving of the external mechanism, the chuck alone clamps the pipe material to rotate and feed, and then cuts, so as to realize tailless material cutting.

[0034] In the embodiment, the gear disc 64 is provided with two, and the two gear discs 64 are respectively used for driving two groups of clamping units to move relatively or oppositely.

[0035] Specifically, the two gear discs 64 can realize independent or synchronous driving of the two groups of clamping jaw units, and increase flexibility and applicability of the chuck structure. When relative movement of the two groups of clamping jaw units is needed, one gear disc 64 drives one group of clamping jaw units to move forward, and the other gear disc 64 drives the other group of clamping jaw units to move backward, so as to realize clamping and loosening actions of the pipe material. When synchronous movement of the two groups of clamping jaw units is needed, the two gear discs 64 are synchronously rotated to drive the two groups of clamping jaw units to move at the same speed and in the same direction, so as to ensure stability and accuracy of the pipe material in the machining process.

[0036] In the embodiment, a gear disc supporting ring is further included, the gear disc supporting ring is fixedly connected on the front disc 2 or the rear disc 3, the gear disc 64 is sleeved on the outer circumferential surface of the gear disc supporting ring, so that the gear disc 64 can rotate relative to the front disc 2 or the rear disc 3, and gear disc baffles for preventing the gear disc 64 from moving axially are further arranged on both sides of the gear disc 64.

[0037] Specifically, the setting of the gear disc support ring and the gear disc stopper not only ensures the stable rotation of the gear disc 64, but also prevents the axial movement of the gear disc 64 during rotation, further improving the stability and reliability of the chuck structure. The gear disc support ring is fixedly connected to the front disc 2 or the rear disc 3, providing a stable support platform for the gear disc 64, so that the gear disc 64 can rotate smoothly on the outer circular surface of the support ring. The setting of the gear disc stopper effectively limits the movement of the gear disc 64 in the axial direction, avoiding transmission errors and damage caused by the shaking of the gear disc 64. This design enhances the overall stability of the chuck structure.

[0038] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present application. It should be understood that the above description is only a specific embodiment of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A dual pinion full stroke chuck structure, characterized by: The application relates to a rotary support bearing (1) which is provided with a front disc (2) and a rear disc (3) on two sides respectively, and two groups of clamping jaw units for clamping pipes are arranged on the front disc (2) and the rear disc (3) respectively, each group of clamping jaw units comprises two oppositely arranged clamping jaw assemblies (4). The clamping jaw assembly (4) comprises a guide rail (41) fixed on the front disc (2) or the rear disc (3), a sliding block (42) which can slide relative to the guide rail (41) is arranged on the guide rail (41), a rack structure (43) is arranged on one side of the guide rail, first and second driving pinions (44) and (45) are arranged on one side of the sliding block (42) respectively, and a gear driving mechanism for simultaneously driving the first and second driving pinions (44) and (45) to rotate is further arranged, when the sliding block (42) moves, the rack structure (43) is at least in mesh with the first and second driving pinions (44) and (45). Two oppositely arranged clamping jaw assemblies (4) of the front disc (2) are provided with zero tail material clamping jaws (5).

2. The dual pinion full stroke chuck structure of claim 1, wherein: The gear driving mechanism comprises a driving rod (61), driving large gears (62) are arranged at two ends of the driving rod (61) respectively, a third driving pinion (63) is arranged at the middle of the driving rod (61), the driving large gears (62) at the two ends of the driving rod (61) are simultaneously in mesh with the first and second driving pinions (44) and (45) at the front disc (2) and the rear disc (3) respectively, and a gear disc driving mechanism for driving the third driving pinion (63) to rotate is further arranged.

3. The dual pinion full stroke chuck structure of claim 2, wherein: The gear disc driving mechanism comprises a gear disc (64) which is in mesh with the third driving pinion (63), and a rotary driving mechanism for driving the gear disc (64) to move. The rotary driving mechanism comprises a cylinder (65), a cylinder rotating shaft (66), a cylinder tail seat (67), a cylinder joint (68) and a cantilever pin (69), the cylinder rotating shaft (66) is connected with the front disc (2) and the rear disc (3) at two ends respectively, the cylinder tail seat (67) is rotationally connected with the cylinder rotating shaft (66), the cylinder joint (68) is arranged at the driving end of the cylinder (65), and the cantilever pin (69) is rotationally connected with the gear disc (64) at one end and rotationally connected with the cylinder joint (68) at the other end.

4. The dual pinion full stroke chuck structure of claim 1, wherein: The zero tail material clamping jaw (5) comprises a zero tail material clamping block (51), a zero tail material cylinder (52) for driving the zero tail material clamping block (51) to stretch out is arranged on one side of the zero tail material clamping block (51), the side of the zero tail material clamping block (51) facing the product is a plane structure, and an anti-skid structure is arranged on the plane structure.

5. The dual pinion full stroke chuck structure of claim 2, wherein: The gear disc (64) is provided with two gear discs (64) which are used for driving two groups of clamping units to move oppositely or towards each other.

6. The dual pinion full stroke chuck structure of claim 3, wherein: Also included is a toothed disc support ring fixedly connected to the front disc (2) or the rear disc (3), the toothed disc (64) being sleeved on the outer circumferential surface of the toothed disc support ring, so that the toothed disc (64) can rotate relative to the front disc (2) or the rear disc (3), and toothed disc stop flaps for preventing axial movement of the toothed disc (64) are further arranged on both sides of the toothed disc (64).

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