Belt clamping mechanism of belt threading machine

Abstract

The utility model relates to the technical field of tape threading machines, and discloses a tape clamping mechanism of a tape threading machine, which is arranged in an overturning head on an overturning frame and comprises a first cam and a second cam symmetrically distributed with the first cam, the first cam is rotatably connected with the overturning head through a first pivot, the second cam is rotatably connected with the overturning head through a second pivot, and the overturning head is provided with a second cam. A first elastic piece is arranged between the first cam and the overturning head, and a second elastic piece is arranged between the second cam and the overturning head. A first lug is arranged on the first cam, and a second lug is arranged on the second cam; in a natural state, under the action of the first elastic piece and the second elastic piece, the first cam elastically abuts against the second cam. And when the first convex lug and the second convex lug are shifted at the same time, the first cam and the second cam rotate and are separated, and a threading gap is formed between the first cam and the second cam. The utility model has the beneficial effects of stable structure and convenience in use.

Description

Technical Field

[0001] The utility model relates to the technical field of tape threading machines, in particular to a tape clamping mechanism of a tape threading machine. Background Art

[0002] When packing large objects, a tape threading machine is usually used for tape threading. A traction head is arranged at the bottom of the tape threading machine, a turning frame is arranged inside the traction head, a turning head is arranged inside the turning frame, a driving chain is connected to the turning head, one end of a packing tape is connected to the turning head, the traction head pulls the packing tape through the bottom of the object, and then the turning head turns to the vertical direction and separates from the traction head. The turning head bypasses the object upward under the action of the driving chain and returns to the tape threading machine. At this time, it is necessary to separate the packing tape from the turning head. At present, the packing tape and the turning head are clamped by a clamping block. This clamping method has poor stability and is likely to cause the turning head to separate from the packing tape during movement. Summary of the Utility Model

[0003] In order to solve the above problems existing in the prior art, the utility model provides a tape clamping mechanism of a tape threading machine with stable structure and convenient use.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A tape clamping mechanism of a tape threading machine is arranged inside a turning head arranged on a turning frame, and includes a first cam and a second cam symmetrically distributed with the first cam. The first cam is rotationally connected to the turning head through a first pivot, the second cam is rotationally connected to the turning head through a second pivot, a first elastic member is arranged between the first cam and the turning head, and a second elastic member is arranged between the second cam and the turning head; a first lug is arranged on the first cam, and a second lug is arranged on the second cam; in the natural state, under the action of the first elastic member and the second elastic member, the first cam and the second cam are elastically abutted; when the first lug and the second lug are simultaneously toggled, the first cam and the second cam rotate and separate to form a tape threading gap therebetween.

[0006] Toggle the first lug and the second lug to make the first cam and the second cam rotate and separate to form a tape threading gap, and the packing tape passes through the tape threading gap. Release the first lug and the second lug, and under the action of the first elastic member and the second elastic member, the first cam and the second cam elastically clamp the packing tape; when the turning head drives the packing tape to move to a preset position, toggle the first lug and the second lug to take out the packing tape from the tape threading gap.

[0007] Preferably, a first arc-shaped bearing surface is arranged at the large-diameter end of the first cam, and a second arc-shaped bearing surface is arranged at the large-diameter end of the second cam; in the natural state, the first arc-shaped bearing surface and the second arc-shaped bearing surface are elastically abutted.

[0008] Preferably, the first lug is disposed at the lower end of the first cam, and the second lug is disposed at the lower end of the second cam. When the first lug and the second lug are simultaneously pressed down, the first lug and the second lug approach each other, causing the first arc-shaped bearing surface and the second arc-shaped bearing surface to separate to form the tape threading gap.

[0009] Preferably, a first limit pin for limiting the first lug is provided on the lower side of the first cam, and a second limit pin for limiting the second lug is provided on the lower side of the second cam. The first limit pin and the second limit pin are located between the first lug and the second lug. The first limit pin and the second limit pin are used to limit the rotation angles of the first cam and the second cam.

[0010] Preferably, the first elastic member is configured as a first tension spring. One end of the first tension spring is connected to the first cam, and the other end of the first tension spring is connected to the first limit pin. The second elastic member is configured as a second tension spring. One end of the second tension spring is connected to the second cam, and the other end of the second tension spring is connected to the second limit pin.

[0011] Preferably, limiting blocks for preventing the packing tape from coming out are provided on both sides of the tape threading gap on the towing head. The limiting blocks limit both sides of the packing tape to prevent the packing tape from coming out of the tape threading gap.

[0012] Therefore, the utility model has the beneficial effects of stable structure and convenient use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural view of the utility model.

[0014] Figure 2 is a schematic view of the state where the first cam and the second cam clamp the packing tape.

[0015] Figure 3 is Figure 2 a left view of

[0016] Figure 4 is a schematic structural view of the first cam and the second cam. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] In order to make the technical problems, technical solutions and beneficial technical effects to be solved by the utility model clearer, the utility model will be further described in detail below with reference to the drawings and multiple exemplary embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, rather than to limit the protection scope of the utility model.

[0018] It should be understood that in this text, expressions such as "first", "second", etc. are only for descriptive purposes, and should not be construed as indicating or implying relative importance, nor should they be construed as implicitly specifying the quantity of the indicated technical features. Features defined with "first" and "second" may explicitly or implicitly include at least one such feature.

[0019] As Figures 1 - 4 shown, a belt clamping mechanism of a tape threading machine is arranged in a turning head 2 provided on a turning frame 1, and includes a first cam 10 and a second cam 20 symmetrically distributed with respect to the first cam 10. The first cam 10 is rotationally connected to the turning head 2 through a first pivot 11, and the second cam 20 is rotationally connected to the turning head 2 through a second pivot 21. A first elastic member 12 is provided between the first cam 10 and the turning head 2, and a second elastic member 22 is provided between the second cam 20 and the turning head 2; a first lug 100 is provided on the first cam 10, and a second lug 200 is provided on the second cam 20; in the natural state, under the action of the first elastic member 12 and the second elastic member 22, the first cam 10 and the second cam 20 are elastically abutted; when the first lug 100 and the second lug 200 are simultaneously toggled, the first lug 100 and the second lug 200 rotate and separate to form a tape threading gap therebetween.

[0020] The large-diameter end of the first cam 10 is provided with a first arc-shaped bearing surface 101, and the large-diameter end of the second cam 20 is provided with a second arc-shaped bearing surface 201; in the natural state, the first arc-shaped bearing surface 101 and the second arc-shaped bearing surface 201 are elastically abutted; the first lug 100 is provided at the lower end of the first cam 10, and the second lug 200 is provided at the lower end of the second cam 20. When the first lug 100 and the second lug 200 are simultaneously pressed down, the first lug 100 and the second lug 200 approach each other, so that a tape threading gap is formed by the separation of the first arc-shaped bearing surface 101 and the second arc-shaped bearing surface 201.

[0021] A first limit pin 13 for limiting the first lug 100 is provided on the lower side of the first cam 10, and a second limit pin 23 for limiting the second lug 200 is provided on the lower side of the second cam 20. The first limit pin 13 and the second limit pin 23 are located between the first lug 100 and the second lug 200. The first elastic member 12 is configured as a first tension spring, one end of the first tension spring is connected to the first cam 10, and the other end of the first tension spring is connected to the first limit pin 13; the second elastic member 22 is configured as a second tension spring, one end of the second tension spring is connected to the second cam 20, and the other end of the second tension spring is connected to the second limit pin 23. Limit blocks 30 for preventing the packing belt 3 from coming out are provided on both sides of the turning head 2 at the tape threading gap.

[0022] Combined with the attached drawings, the principle of the present utility model is as follows: As Figure 4As shown, when the first lug 100 and the second lug 200 are pressed down simultaneously, the first lug and the second lug approach each other and are limited by the first limit pin and the second limit pin. At this time, the first cam and the second cam rotate synchronously, so that the first arc bearing surface and the second arc bearing surface are separated, and the packing belt is passed through the threading gap from bottom to top. Then, the first lug and the second lug are released, and the first cam and the second cam elastically clamp the packing belt under the action of the first tension spring and the second tension spring. After that, the flipping head moves (upward along the Figure 4 direction in Figure 4 ). Since the friction force direction of the packing belt on the first cam and the second cam (the friction force direction is downward) is the same as the pulling force direction of the first tension spring and the second tension spring (downward), the packing belt is locked by the first cam and the second cam during the movement, and the stability is very good, and the packing belt will not come off. When the packing belt needs to be removed, the first lug and the second lug are pressed down simultaneously, and the packing belt is pulled out from the threading gap.

[0023] In the description of the present invention, it should be understood that the directions or positional relationships indicated by up and down, left and right, inner end, outer end, one end, the other end, etc. are based on the orientation or positional relationship shown in the drawings, and are only for more clearly describing the technical solution of the present invention, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific orientation, and should not be construed as a limitation of the present invention.

[0024] Although specific embodiments of the present invention are described in detail herein, they are given only for the purpose of explanation and should not be considered as limiting the scope of the present invention. Various substitutions, changes and modifications can be conceived without departing from the spirit and scope of the present invention.

Claims

1. A clamping mechanism of a threading machine, which is arranged inside a turning head (2) on a turning frame (1), and is characterized in that, It includes a first cam (10) and a second cam (20) symmetrically distributed with respect to the first cam (10). The first cam (10) is rotatably connected to the turning head (2) through a first pivot (11), and the second cam (20) is rotatably connected to the turning head (2) through a second pivot (21). A first elastic member (12) is provided between the first cam (10) and the turning head (2), and a second elastic member (22) is provided between the second cam (20) and the turning head (2); a first lug (100) is provided on the first cam (10), and a second lug (200) is provided on the second cam (20); In the natural state, under the action of the first elastic member and the second elastic member (22), the first cam (10) and the second cam (20) are elastically abutted; when the first lug (100) and the second lug (200) are simultaneously toggled, the first cam (10) and the second cam (20) rotate and separate to form a tape-passing gap therebetween.

2. The pinching mechanism of a threading machine according to claim 1, characterized in that, A first arc-shaped bearing surface (101) is provided at the large-diameter end of the first cam (10), and a second arc-shaped bearing surface (201) is provided at the large-diameter end of the second cam (20); in the natural state, the first arc-shaped bearing surface (101) is elastically abutted against the second arc-shaped bearing surface (201).

3. The pinching mechanism of a threading machine according to claim 2, characterized in that, The first lug (100) is provided at the lower end of the first cam (10), and the second lug (200) is provided at the lower end of the second cam (20). When the first lug (100) and the second lug (200) are simultaneously pressed down, the first lug (100) and the second lug (200) approach each other, causing the first arc-shaped bearing surface (101) and the second arc-shaped bearing surface (201) to separate to form the tape-passing gap.

4. The pinching mechanism of a threading machine according to claim 3, characterized in that, A first limit pin (13) for limiting the first lug (100) is provided on the lower side of the first cam (10), and a second limit pin (23) for limiting the second lug (200) is provided on the lower side of the second cam (20). The first limit pin (13) and the second limit pin (23) are located between the first lug (100) and the second lug (200).

5. The pinching mechanism of a threading machine according to claim 4, characterized in that, The first elastic member (12) is configured as a first tension spring. One end of the first tension spring is connected to the first cam (10), and the other end of the first tension spring is connected to the first limit pin (13); The second elastic member (22) is configured as a second tension spring. One end of the second tension spring is connected to the second cam (20), and the other end of the second tension spring is connected to the second limit pin (23).

6. The pinching mechanism of a threading machine according to claim 1, characterized in that, Limit blocks (30) for preventing the packing tape (3) from coming out are provided on both sides of the turning head (2) at the tape-passing gap.

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