CN210736967U - Automatic lifting film splitting knife for polytetrafluoroethylene long fibers - Google Patents

Abstract

The utility model belongs to the field of polytetrafluoroethylene long fiber production equipment, in particular to an automatic lifting membrane splitting knife for polytetrafluoroethylene long fibers, which comprises a fixed frame, a motor, a knife handle and a knife clamp, wherein the fixed frame is provided with an eccentric shaft and the motor, the motor is provided with a driving gear, the periphery of a shaft body of the eccentric shaft is provided with a driven gear, and the driving gear is meshed with the driven gear; the two ends of the eccentric shaft are connected with a knife handle support through ball bearings, the knife handle is mounted on the knife handle support, an angle positioning groove is formed in the knife handle, and a positioning key is arranged on the knife handle support in a matching mode with the angle positioning groove. The utility model discloses can prolong the life of sword, reduce the frequency of tool changing, solve the fibre and go out deckle edge and cracked problem, can also save the cost of labor, improve work efficiency, reduce the product loss.

Description

Automatic lifting film splitting knife for polytetrafluoroethylene long fibers

Technical Field

The utility model belongs to polytetrafluoroethylene long fiber production facility field specifically reaches a polytetrafluoroethylene long fiber splits sword with automatic rising membrane.

Background

At present, in the production process of polytetrafluoroethylene long fibers, the substrate film is cut into substrate strips with equal width along the direction parallel to the molecular chain by using equally-spaced cutters, which is a widely applied method at present, the length of the substrate strips determines the length of the fibers, and the service life of the cutters becomes the key of the length of the substrate strips. The material property of polytetrafluoroethylene fiber determines that the polytetrafluoroethylene fiber can not be buckled and connected, so the requirement that the fiber length is continuously increased is closely related to a membrane cracking cutter, the reduction of the blade strength can directly lead to the fluffing and even breaking of a base material strip, and the change of the angle of an entry point or a cutter is a common means for solving the problem of infrequent cutter changing.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a not enough to prior art, the utility model aims at providing a long fibre of polytetrafluoroethylene splits sword with automatic rising membrane, can prolong the life of sword, reduces the frequency of tool changing, solves the fibre and goes out deckle edge and cracked problem, can also save the cost of labor, improves work efficiency, reduces the product loss.

The utility model discloses an adopt following technical scheme to realize:

an automatic lifting membrane splitting knife for polytetrafluoroethylene long fibers comprises a fixing frame, a motor, a knife handle and a knife clamp, wherein an eccentric shaft and the motor are mounted on the fixing frame, a driving gear is mounted on the motor, a driven gear is arranged on the periphery of a shaft body of the eccentric shaft, and the driving gear is meshed with the driven gear; the two ends of the eccentric shaft are connected with a knife handle support through ball bearings, the knife handle is mounted on the knife handle support, an angle positioning groove is formed in the knife handle, and a positioning key is arranged on the knife handle support in a matching mode with the angle positioning groove.

Further preferably, the motor is controlled by a single chip microcomputer.

Further preferably, the ball bearing may be provided in plurality.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses handle of a knife support passes through the bulb bearing with the eccentric shaft and is connected, can turn into the linear motion of handle of a knife support's taking the angular variation with the axial motion of eccentric shaft to the drive knife rest can also let the sword have the angular variation of 8 degrees in reciprocating motion, makes the knife and the entrance point of membrane and the angle of cut change simultaneously, reaches extension blade life's purpose.

2. The utility model discloses the eccentric shaft passes through gear connection with the motor, and the motor is by single chip microcomputer control, can set up opening of sword wantonly and stop position and velocity of motion, and simple structure is reasonable, and convenient to use need not to maintain, has not only solved the fibre and has gone out deckle edge and cracked problem, can also save the cost of labor, improves work efficiency, reduces the product loss.

Drawings

Fig. 1 is a schematic structural view of the present invention;

in the figure: 1. a fixed mount; 2. a ball bearing; 3. a knife handle bracket; 4. a positioning key; 5. a knife handle; 6. an angle positioning slot; 7. a tool holder; 8. an eccentric shaft; 9. an electric motor; 10. a driving gear; 11. a driven gear.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1, an automatic lifting membrane splitting knife for polytetrafluoroethylene long fibers comprises a fixed frame 1, a motor 9, a knife handle 5 and a knife clamp 7, wherein an eccentric shaft 8 and the motor 9 are installed on the fixed frame 1, a driving gear 10 is installed on the motor 9, a driven gear 11 is arranged on the periphery of a shaft body of the eccentric shaft 8, and the driving gear 10 is meshed with the driven gear 11; the two ends of the eccentric shaft 8 are connected with the handle support 3 through the ball bearings 2, the handle 5 is mounted on the handle support 3, the handle 5 is provided with an angle positioning groove 6, and the handle support 3 is provided with a positioning key 4 matched with the angle positioning groove 6.

The motor 9 is controlled by a single chip microcomputer.

The ball head bearing 2 is provided with two connecting parts.

Of course, the above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and the technical field of the present invention is equivalent to the changes and improvements made in the actual range of the present invention, which should be attributed to the patent coverage of the present invention.

Claims (3)

1. The utility model provides a long fibre of polytetrafluoroethylene splits sword with automatic rising membrane, includes mount (1), motor (9), handle of a knife (5) and tool holder (7), its characterized in that: an eccentric shaft (8) and a motor (9) are mounted on the fixed frame (1), a driving gear (10) is mounted on the motor (9), a driven gear (11) is arranged on the periphery of a shaft body of the eccentric shaft (8), and the driving gear (10) is meshed with the driven gear (11); the eccentric shaft (8) both ends all be connected with handle of a knife support (3) through bulb bearing (2), on handle of a knife (5) installation and handle of a knife support (3), be equipped with angle positioning groove (6) on handle of a knife (5), cooperate angle positioning groove (6) to be equipped with navigation key (4) on handle of a knife support (3).

2. The automatic lifting membrane splitting knife for the polytetrafluoroethylene long fibers according to claim 1, wherein the automatic lifting membrane splitting knife comprises: the motor (9) is controlled by a singlechip.

3. The automatic lifting membrane splitting knife for the polytetrafluoroethylene long fibers according to claim 1, wherein the automatic lifting membrane splitting knife comprises: the ball head bearing (2) can be provided with a plurality of ball head bearings.

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