Brake device for thread stand disc of bolt heading machine

Abstract

The utility model discloses a brake device for a thread stand disc of a bolt heading machine, which comprises a base and a thread stand, a mounting shaft is arranged in the middle of the base, a mounting column is arranged in the middle of the thread stand, the mounting column is sleeved on the mounting shaft, and the mounting column and the mounting shaft are in running fit through a bearing; a brake disc is mounted on a mounting column of the coil holder, and a rotating sheet in the brake disc is fixed with the mounting shaft; a tachometer disc is arranged above the brake disc, and a rotating speed sensor matched with the tachometer disc to work is arranged on the installation shaft. The brake disc and the tachometer disc are arranged on the coil holder, the rotating speed sensor is arranged on the mounting shaft, the rotating speed of the coil holder is detected in real time through matching of the rotating speed sensor and the tachometer disc, and when the rotating speed is too high, speed reduction is achieved through friction force between the brake pad in the brake disc and the rotating piece, so that the rotating speed of the coil holder is stabilized, and normal wire conveying is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of bolt heading machines, in particular to a wire rack disc brake device for bolt heading machines. Background Art

[0002] Bolt heading machine is a cold heading equipment, which has the function of punching one die and two punches, and is mainly used for forming the head of bolt products. Its working principle is to straighten the wire, feed the wire, cut it, feed it into the main die, punch it for initial forging, and punch it for forming the blank. The raw material of the bolt heading machine is stainless steel wire, which is in a coiled structure. When in use, the stainless steel wire is set on the wire rack. Figure 5 As shown, the wire rack disk includes a base 1 and a wire rack 2 for supporting the wire. The wire rack 2 is rotatably mounted on the base 1. When the bolt heading machine is fed, the wire will drive the wire rack 2 to rotate around the base 1. Under the action of inertia, the speed of the wire rack 2 is sometimes too fast, which may cause the wire to fall off, get entangled, and other problems, resulting in the feeding of the wire in the middle section, affecting the operation of the bolt heading machine. At present, in order to reduce the speed of the wire rack, some customers will tie an iron block 11 to the wire rack when using it, and use the weight of the iron block 11 to reduce the speed of the wire rack 2, but this operation is not beautiful and has safety hazards. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a wire rack disc brake device for a bolt heading machine, which can stabilize the wire rack rotation speed and ensure normal wire transportation.

[0004] To this end, the technical solution of the utility model is: a wire rack brake device for a bolt heading machine, comprising a base and a wire rack, a mounting shaft is provided in the middle of the base, a mounting column is provided in the middle of the wire rack, the mounting column is sleeved on the mounting shaft, and the two are rotatably matched through bearings; a brake disc is installed on the mounting column of the wire rack, and a rotating plate in the brake disc is fixed to the mounting shaft; a speed measuring disc is provided above the brake disc, and a speed sensor that cooperates with the speed measuring disc is provided on the mounting shaft.

[0005] On the basis of the above scheme and as a preferred scheme of the above scheme: the brake disc includes a chassis, a brake pad, a rotating plate and a top plate, and the chassis, brake pad and top plate are connected by long bolts. An electromagnet and a spring are provided on the side of the chassis facing the brake pad. The brake pad is made of magnetic material and works in cooperation with the electromagnet. The spring is in a compressed state and abuts against the brake pad.

[0006] On the basis of the above scheme and as a preferred scheme of the above scheme: the chassis is fixedly connected to the wire rack, the chassis, brake pads, top plate, and speed measuring plate can rotate synchronously with the wire rack, the rotating plate is fixedly connected to the mounting shaft, and the rotating plate and the brake pads can rotate relative to each other.

[0007] On the basis of the above scheme and as a preferred scheme of the above scheme: the brake pad is provided with a through hole, the through hole is mounted on the long bolt, and the brake pad can move up and down along the long bolt under the action of the electromagnet and the spring, leaving the rotating plate or sticking to the rotating plate.

[0008] On the basis of the above scheme and as a preferred scheme of the above scheme: the speed measuring disk is evenly distributed with a plurality of magnetic steels, and the speed sensor cooperates with the magnetic steels to measure the speed.

[0009] When in use, place the wire on the wire rack, and energize the electromagnet in the brake disc. The electromagnet absorbs the brake pad, causing the brake pad to leave the rotating plate. At this time, the brake pad squeezes the spring; then, driven by the wire, the wire rack rotates, and the chassis, brake pad, top plate, and speed measuring plate also rotate synchronously with the wire rack. At this time, the speed sensor on the installation shaft can detect the speed of the wire rack through the magnet on the speed measuring plate; when the speed measured by the speed sensor exceeds the set threshold, the electromagnet is powered off and no longer absorbs the brake pad. Under the action of the spring, the brake pad is close to the rotating plate, thereby causing friction between the brake pad and the rotating plate. The friction force can reduce the speed of the wire rack to ensure normal transportation on site.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: a brake disc and a speed measuring disc are arranged on the wire rack, a speed sensor is arranged on the mounting shaft, and the speed sensor and the speed measuring disc are used to detect the speed of the wire rack in real time. When the speed is too fast, the friction between the brake pad and the rotating plate in the brake disc is used to slow down the speed, thereby stabilizing the speed of the wire rack and ensuring normal wire transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] Figure 2 It is a structural sectional view of the utility model;

[0013] Figure 3 for Figure 2 A partial enlarged view of the vehicle (without brakes);

[0014] Figure 4 It is a partial cross-sectional view of the utility model in the braking state;

[0015] Figure 5 This is a schematic diagram of the structure of bundling iron blocks for an existing wire rack.

[0016] Marked in the figure are: base 1, wire rack 2, mounting shaft 3, mounting column 4, bearing 5, brake disc 6, brake disc 6, chassis 61, brake pad 62, rotating plate 63, top plate 64, long bolt 65, electromagnet 7, spring 8, speed disc 9, speed sensor 10, iron block 11. DETAILED DESCRIPTION

[0017] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating the present invention and simplifying the description, 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 cannot be understood as limiting the specific protection scope of the present invention.

[0018] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "several" and "a number" is two or more, unless otherwise clearly and specifically defined.

[0019] The wire rack brake device for bolt heading machine described in this embodiment comprises a base 1 and a wire rack 2, wherein a mounting shaft 3 is provided in the middle of the base 1, and a mounting column 4 is provided in the middle of the wire rack 2. The mounting column 4 is sleeved on the mounting shaft 3, and the two are rotatably matched through a bearing 5.

[0020] A brake disc 6 is installed on the mounting column of the wire rack 2, and the brake disc 6 includes a chassis 61, a brake pad 62, a rotating plate 63 and a top plate 64. The chassis 61, the brake pad 62 and the top plate 64 are connected by long bolts 65. The long bolts 65 pass through the through holes of the top plate 64 and the brake pad 62 and are locked and fixed with the threaded holes of the chassis; the chassis is fixedly connected to the wire rack, and the chassis 61, the brake pad 62 and the top plate 64 can rotate synchronously with the wire rack 2. The rotating plate 63 is fixedly connected to the mounting shaft 3, and the rotating plate 63 and the brake pad 62 can rotate relative to each other.

[0021] The chassis 61 is provided with an electromagnet 7 and a spring 8 on the side facing the brake pad 62. The brake pad 62 is made of magnetic material and cooperates with the electromagnet 7. A spring mounting hole is provided on one side of the electromagnet 7. A spring 8 in a compressed state is provided in the spring mounting hole. The spring 8 abuts against the brake pad 62 and gives the brake pad 62 an outward force. When the electromagnet 7 is powered on, it can absorb the brake pad 62 so that the brake pad 62 leaves the rotating plate 63, ensuring that the wire rack 2 can rotate with the wire. When the electromagnet 7 is powered off, the brake pad 62 can move toward the rotating plate 63 under the action of the spring 8, so that the brake pad 62 fits the rotating plate 63, and the wire rack 2 slows down under the action of friction.

[0022] A speed measuring disc 9 is arranged above the brake disc 6, and a speed sensor 10 cooperating with the speed measuring disc 9 is arranged on the mounting shaft 3. The speed measuring disc 9 is evenly distributed with a plurality of magnets, and the speed sensor 10 cooperates with the magnets to measure the speed.

[0023] When in use, the wire is placed on the wire rack 2, and the electromagnet 7 in the brake disc 6 is energized. The electromagnet 7 absorbs the brake pad 62, so that the brake pad 62 leaves the rotating plate 63. At this time, the brake pad 62 squeezes the spring 8; then, driven by the wire, the wire rack 2 rotates, and the chassis 61, the brake pad 62, the top plate 63, and the speed measuring disc 9 also rotate synchronously with the wire rack 2. At this time, the speed sensor 10 on the mounting shaft 3 can detect the speed of the wire rack 2 through the magnetic steel on the speed measuring disc 9; when the speed measured by the speed sensor 10 exceeds the set threshold, the electromagnet 7 is powered off and no longer absorbs the brake pad 62. Under the action of the spring 8, the brake pad 62 is close to the rotating plate 63, so that friction occurs between the brake pad 62 and the rotating plate 63. The friction force can reduce the speed of the wire rack 2 to ensure normal transportation of the wire.

[0024] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A wire rack brake device for a bolt heading machine, comprising a base and a wire rack, wherein a mounting shaft is provided in the middle of the base, a mounting column is provided in the middle of the wire rack, the mounting column is sleeved on the mounting shaft, and the two are rotatably matched through a bearing; the characteristics are: A brake disc is installed on the mounting column of the wire rack, and a rotating plate in the brake disc is fixed to the mounting shaft; a speed measuring disc is arranged above the brake disc, and a speed sensor cooperating with the speed measuring disc is arranged on the mounting shaft.

2. A brake device for a bolt heading machine wire rack according to claim 1, characterized in that: The brake disc includes a chassis, a brake pad, a rotating plate and a top plate. The chassis, brake pad and top plate are connected by long bolts. An electromagnet and a spring are provided on the side of the chassis facing the brake pad. The brake pad is made of magnetic material and works in conjunction with the electromagnet. The spring is in a compressed state and abuts against the brake pad.

3. A brake device for a bolt heading machine wire rack according to claim 2, characterized in that: The chassis is fixedly connected to the wire rack, the chassis, brake pads, top plate and speed measuring plate can rotate synchronously with the wire rack, the rotating plate is fixedly connected to the mounting shaft, and the rotating plate and the brake pads can rotate relative to each other.

4. A brake device for a bolt heading machine wire rack according to claim 2, characterized in that: The brake pad is provided with a through hole, which is sleeved on the long bolt. Under the action of the electromagnet and the spring, the brake pad can move up and down along the long bolt, leaving the rotating plate or sticking to the rotating plate.

5. A brake device for a bolt heading machine wire rack according to claim 1, characterized in that: The speed measuring disc has a plurality of magnets evenly distributed thereon, and the speed sensor cooperates with the magnets to measure the speed.

Images