Air swelling shaft safety chuck assembly capable of being axially adjusted

Abstract

The utility model discloses a pneumatic shaft safety chuck assembly capable of being axially adjusted, which belongs to the technical field of composite material processing auxiliary equipment and comprises a rack, two ends of the rack are respectively connected with a driving sliding table and a driven sliding table in a sliding manner, an auxiliary chuck is mounted on the driving sliding table, and a main chuck is mounted on the driven sliding table; limiting blocking pieces are fixedly installed on the outer vertical faces of the inner sides of the auxiliary chuck and the main chuck, an air expansion shaft is installed between the main chuck and the auxiliary chuck, an annular groove is machined in the shaft end of the air expansion shaft, and the limiting blocking pieces are embedded in the annular groove. The driving sliding table and the driven sliding table move on the machine frame to drive the air expansion shaft and materials on the air expansion shaft to move on the machine frame to conduct axial position adjustment of the materials, installation of a movable machine frame is omitted, mechanism reduction is achieved, and equipment manufacturing cost is reduced. The occupied space of the sliding table and the chuck is extremely small, the projection space of the sliding table and the chuck is smaller than the material rolling diameter, and installation and use are convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of composite material processing auxiliary equipment, in particular to an axially adjustable gas expansion shaft safety chuck component. Background Art

[0002] During the production of composite prepreg, auxiliary materials such as release paper and plastic film are required. During the production process, the release paper and plastic film need to be unwound and rolled. Therefore, multiple retracting and unwinding devices are required during the production process. In order to ensure the accuracy of the release or collection of the release paper and plastic film during the unwinding or rewinding process, the release paper needs to be manually corrected (axially adjusted) during operation.

[0003] In the reeling and winding process, the safety chuck is a commonly used clamping device for carrying the air expansion shaft. This device has the advantages of safety, reliability and good stability. The safety chuck adopts a square-mouth structure to limit the air expansion shaft, so it only has a radial locking function, and its axial locking needs to limit the air expansion shaft through the end faces of the safety chucks at both ends. Therefore, the safety chucks at both ends of the air expansion shaft need to be installed on the same fixed frame, and the frame needs to be a whole. Therefore, manual correction and adjustment during the design and use process requires the entire frame to be moved. This installation and adjustment method requires the design of a positioning and guiding mechanism for the frame and the entire frame. The overall mechanism is complex and requires a larger installation space, which is not conducive to the use of smaller spaces, and the overall cost of the mechanism is relatively high.

[0004] To this end, an axially adjustable pneumatic shaft safety chuck assembly is proposed, which has the advantages of small installation space, convenient use and no need for frame movement. Utility Model Content

[0005] In order to solve the above technical problems, the utility model proposes an axially adjustable gas expansion shaft safety chuck assembly.

[0006] To achieve the above-mentioned purpose, the utility model provides an axially adjustable pneumatic shaft safety chuck assembly, comprising: a frame, an active slide and a driven slide are respectively slidably connected at both ends of the frame, an auxiliary chuck is installed on the active slide, and a main chuck is installed on the driven slide; a limit baffle is fixedly installed on the inner outer surface of the auxiliary chuck and the main chuck, an pneumatic shaft is installed between the main chuck and the auxiliary chuck, the shaft end of the pneumatic shaft is processed with an annular groove, and the limit baffle is embedded in the annular groove.

[0007] Preferably, dovetail bars are fixedly connected at both ends of the frame along the axial direction of the air expansion shaft, and dovetail grooves are provided at the bottom of the active slide and the driven slide. The dovetail grooves at the bottom of the active slide and the driven slide are respectively slidably connected to the dovetail bars at both ends of the frame.

[0008] Preferably, the active slide is internally threadedly connected to an axle, the axle passes through the active slide, both ends of the axle are rotatably connected to the frame, and the outer end of the axle extends out of the frame and is fixedly connected to a handwheel.

[0009] Preferably, a clearance groove is provided in the middle of the frame corresponding to the air expansion shaft.

[0010] Preferably, the limit baffle is a U-shaped piece, one end of which is provided with an open groove, and the air expansion shaft is clamped in the open groove; the limit baffle abuts against the inner wall of the annular groove.

[0011] Preferably, the limit stopper is fixed to the main chuck or the auxiliary chuck at the clamping opening by means of screws.

[0012] Compared with the prior art, the utility model has the following advantages and technical effects:

[0013] During specific implementation, the pneumatic shaft is installed with the material, and the square shaft ends of the pneumatic shaft are respectively installed in the bayonet holes of the main chuck and the auxiliary chuck. At the same time, the ring grooves opened at both ends of the pneumatic shaft are embedded with limit baffles. At this time, the main chuck and the auxiliary chuck radially lock the pneumatic shaft to limit the degree of freedom, and the limit baffle locks the pneumatic shaft axially. In this state, the two ends of the pneumatic shaft are completely locked and fixed with the main chuck and the auxiliary chuck respectively. The main chuck and the auxiliary chuck are respectively fixed to the driven slide and the active slide. Therefore, by driving the active slide to slide axially on the frame, the auxiliary chuck, the pneumatic shaft, the material, the main chuck and the driven chuck can be driven to move axially together to complete the axial adjustment of the pneumatic shaft and the material thereon. The utility model drives the air expansion shaft and the material thereon to move on the frame by moving the active slide and the driven slide on the frame to adjust the axial position of the material, thereby eliminating the installation of the mobile frame, achieving the reduction of the mechanism and reducing the equipment cost. In addition, the space occupied by the slide and the chuck in the utility model is extremely small, and the projected space thereof is smaller than the diameter of the material roll, so the installation and use are convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0015] Figure 1 This is a schematic diagram of the structure of the axially adjustable gas expansion shaft safety chuck assembly of the utility model;

[0016] Figure 2 This is a cross-sectional view of the axially adjustable gas expansion shaft safety chuck assembly of the utility model;

[0017] Figure 3 It is a top view of the axially adjustable gas expansion shaft safety chuck assembly of the utility model.

[0018] In the figure: 1, frame; 2, active slide; 3, driven slide; 4, auxiliary chuck; 5, main chuck; 6, limit baffle; 7, air shaft; 8, dovetail bar; 9, dovetail groove; 10, axle; 11, handwheel; 12, give way groove; 13, opening groove; 14, screw. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] Reference Figures 1 to 3 As shown, this embodiment provides an axially adjustable pneumatic shaft safety chuck assembly, including: a frame 1, an active slide 2 and a driven slide 3 are slidably connected at both ends of the frame 1, an auxiliary chuck 4 is installed on the active slide 2, and a main chuck 5 is installed on the driven slide 3; a limit baffle 6 is fixedly installed on the inner outer surface of the auxiliary chuck 4 and the main chuck 5, an pneumatic shaft 7 is installed between the main chuck 5 and the auxiliary chuck 4, and an annular groove is processed at the shaft end of the pneumatic shaft 7, and the limit baffle 6 is embedded in the annular groove.

[0022] During the specific implementation, the pneumatic shaft 7 is installed with the material, and the square shaft ends of the pneumatic shaft 7 are respectively installed in the bayonet of the main chuck 5 and the auxiliary chuck 4. At the same time, the ring grooves opened at both ends of the pneumatic shaft 7 are embedded with the limit baffles 6. At this time, the main chuck 5 and the auxiliary chuck 4 radially lock the pneumatic shaft 7 to limit 4 degrees of freedom, and the limit baffles 6 axially lock the pneumatic shaft 7. In this state, the two ends of the pneumatic shaft 7 are completely locked and fixed with 6 degrees of freedom with the main chuck 5 and the auxiliary chuck 4 respectively. The main chuck 5 and the auxiliary chuck 4 are respectively fixed to the driven slide 3 and the active slide 2. Therefore, by driving the active slide 2 to slide axially on the frame 1, the auxiliary chuck 4, the pneumatic shaft 7, the material, the main chuck 5 and the driven chuck can be driven to move axially together to complete the axial adjustment of the pneumatic shaft 7 and the material thereon. The utility model moves the active slide 2 and the driven slide 3 on the frame 1, drives the air expansion shaft 7 and the material thereon to move on the frame 1 to adjust the axial position of the material, eliminates the installation of the mobile frame 1, realizes the reduction of the mechanism, and reduces the equipment cost; and the space occupied by the slide and the chuck in the utility model is extremely small, and the projected space thereof is smaller than the diameter of the material roll, so the installation is convenient and the use is convenient.

[0023] To further optimize the solution, dovetail bars 8 are fixedly connected at both ends of the frame 1 along the axial direction of the air expansion shaft 7, dovetail grooves 9 are provided at the bottom of the active slide 2 and the driven slide 3, and the dovetail grooves 9 at the bottom of the active slide 2 and the driven slide 3 are respectively slidably connected with the dovetail bars 8 at both ends of the frame 1.

[0024] The dovetail bar 8 and the dovetail groove 9 are used to guide and positionally limit the sliding of the frame 1 and the active slide 2, and the frame 1 and the driven slide 3, so as to avoid the movement track from being skewed and make the sliding smooth.

[0025] Furthermore, the dovetail bar 8 and the dovetail groove 9 may also be replaced by a linear guide rail.

[0026] To further optimize the solution, the active slide 2 is connected to an axle 10 through an internal thread, the axle 10 passes through the active slide 2, both ends of the axle 10 are rotatably connected to the frame 1, and the outer end of the axle 10 extends out of the frame 1 and is fixedly connected to a handwheel 11.

[0027] The hand wheel 11 is rotated to drive the wheel shaft 10 to rotate. The rotation of the wheel shaft 10 drives the active slide 2 threadedly connected thereto to move along the dovetail groove 9, driving the active slide 2 to slide on the frame 1.

[0028] According to a further optimization scheme, a clearance groove 12 is provided in the middle of the frame 1 corresponding to the air expansion shaft 7 .

[0029] The clearance groove 12 provides space for materials with larger diameters to be installed on the air expansion shaft 7 .

[0030] According to a further optimized solution, the limit baffle 6 is a U-shaped piece, one end of which is provided with an open groove 13, and the air expansion shaft 7 is clamped in the open groove 13; the limit baffle 6 abuts against the inner wall of the annular groove.

[0031] During installation, the air shaft 7 is inserted into the limit baffle 6 from the opening groove 13 of the limit baffle 6 , and at the same time, the annular groove on the air shaft 7 abuts against the limit baffle 6 , and the limit baffle 6 limits the axial displacement of the air shaft 7 .

[0032] According to a further optimized solution, the limit stopper 6 is fixed to the main chuck 5 or the auxiliary chuck 4 at the clamping position by screws.

[0033] The limit stopper 6 is fixed to the main chuck 5 or the auxiliary chuck 4 and moves with the main chuck 5 or the auxiliary chuck 4 .

[0034] The parts not described in detail in the present invention are all conventional technical means known to those skilled in the art.

[0035] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. An axially adjustable gas expansion shaft safety chuck assembly, characterized in that: include: A frame (1), wherein two ends of the frame (1) are respectively slidably connected with an active slide (2) and a driven slide (3), an auxiliary chuck (4) is installed on the active slide (2), and a main chuck (5) is installed on the driven slide (3); a limit baffle (6) is fixedly installed on the inner outer surface of the auxiliary chuck (4) and the main chuck (5), and an air expansion shaft (7) is installed between the main chuck (5) and the auxiliary chuck (4), and an annular groove is processed on the shaft end of the air expansion shaft (7), and the limit baffle (6) is embedded in the annular groove.

2. The axially adjustable gas expansion shaft safety chuck assembly according to claim 1, characterized in that: Dovetail bars (8) are fixedly connected at both ends of the frame (1) along the axial direction of the air expansion shaft (7), and dovetail grooves (9) are provided at the bottom of the active slide (2) and the driven slide (3). The dovetail grooves (9) at the bottom of the active slide (2) and the driven slide (3) are respectively slidably connected to the dovetail bars (8) at both ends of the frame (1).

3. The axially adjustable gas expansion shaft safety chuck assembly according to claim 1, characterized in that: The active slide (2) is internally threadedly connected to a wheel axle (10), the wheel axle (10) passes through the active slide (2), both ends of the wheel axle (10) are rotatably connected to the frame (1), and the outer end of the wheel axle (10) extends out of the frame (1) and is fixedly connected to a hand wheel (11).

4. The axially adjustable gas expansion shaft safety chuck assembly according to claim 1, characterized in that: A clearance groove (12) is provided in the middle of the frame (1) corresponding to the air expansion shaft (7).

5. The axially adjustable gas expansion shaft safety chuck assembly according to claim 1, characterized in that: The limit baffle (6) is a U-shaped piece, one end of which is provided with an open groove (13), and the air expansion shaft (7) is clamped in the open groove (13); the limit baffle (6) abuts against the inner wall of the annular groove.

6. The axially adjustable gas expansion shaft safety chuck assembly according to claim 1, characterized in that: The limit stopper (6) is fixed to the clamping opening of the main chuck (5) or the auxiliary chuck (4) by means of screws.

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