CN201436109U - Injection stroke displacement control device - Google Patents

Abstract

The utility model discloses an injection stroke displacement control device, which belongs to the technical field of pressure casting equipment and comprises a support, a limit switch rod arranged on the support, a magnetic grid ruler fixedly arranged on the limit switch rod, an induction ring sleeved on the limit switch rod, and an encoder and an induction switch arranged on the support; the limit switch rod is connected with the piston rod through a connecting plate and is positioned through a positioning plate. The utility model discloses simple structure, can carry out effective control to pressing and penetrate technological parameter, finally reach the purpose of casting out good foundry goods.

Description

An injection stroke displacement control device

Technical field:

The utility model belongs to the technical field of pressure casting equipment, in particular to an injection stroke displacement control device.

Background technique:

The development history of die casting technology is the process of continuous in-depth understanding and research of various process parameters of die casting and continuous improvement and control of various process parameters. In the traditional die-casting control process, travel switches or rotary encoders are generally used to control the injection stroke displacement; but no matter the travel switch or the rotary encoder, there are certain defects in the process of injection stroke displacement control to varying degrees . The control and positioning accuracy of the travel switch to the displacement point is low, and the range fluctuates greatly, generally around ±3mm, and the overall structure of the travel switch and other parts of the die-casting machine is too scattered, which is not easy to adjust. If necessary, multi-level injection control There will also be disadvantages that the travel switches interfere with each other, resulting in failure to detect and output signals. When the rotary encoder is working, it will produce mechanical contact wear or jump, which will affect the detection accuracy and the unstable transmission of the detection signal; the overall structure of the combination of the rotary encoder and other parts of the die-casting machine is too complicated and has contact stress and contact wear; During the injection process, the die-casting machine will inevitably have certain vibrations. The rotary encoder has poor shock resistance. In addition to the harsh environmental pollution in actual production, the counting disc of the rotary encoder is easy to break and cause work failure.

Utility model content:

The purpose of the utility model is to overcome the deficiencies of the prior art, and to provide a displacement control device for the injection stroke with a simple structure, which can precisely control the displacement of the injection stroke during the injection process of the die-casting machine.

The utility model mainly realizes the purpose of the invention through the following technical solutions:

An injection stroke displacement control device, which includes a support, a limit switch rod arranged on the support, a magnetic scale fixed on the limit switch rod, an induction ring sleeved on the limit switch rod, The positioning plate on the support, and the encoder and the induction switch on the support; the limit switch rod is connected to the piston rod through the connecting plate, and the positioning plate positions the limit switch rod and the piston rod in parallel in the same horizontal plane.

Wherein the limit switch rod is provided with a long slot, and the magnetic scale is fixedly arranged in the long slot.

Wherein the outer cover of the limit switch rod is provided with a protective tube.

Wherein the encoder is provided with a sheet metal protective cover.

Wherein the support is also provided with a lubricating port, and the lubricating port is connected with the movement channel of the limit switch rod.

The beneficial effects of the utility model are as follows: the utility model has a simple structure, the electrical components adopt a non-contact magnetic scale and an encoder, and the position detection accuracy is high, and the precision can reach 0.1mm; the overall structure of the combination of the mechanical parts of the utility model is simple, compact and reasonable ; In addition, because the utility model adopts the non-contact induction detection method, the induction control element has strong shock resistance and long working life.

Description of drawings:

Fig. 1 is a schematic view of the front view structure of the utility model;

Fig. 2 is a schematic diagram of the top view structure of the utility model.

Reference signs:

1-Limit switch rod, 2-Magnetic scale, 3-Encoder, 4-Protection tube, 5-Sheet gold protective cover, 6-Connection plate, 7-Bracket, 8-Positioning plate, 9-Sensor switch, 10 -Induction ring, 11-lubrication port, 12-piston rod

Detailed ways:

Below in conjunction with accompanying drawing, technical scheme of the present utility model is further described:

As shown in Figure 1 and Figure 2, an injection stroke displacement control device includes a support 7, a limit switch rod 1 on the support 7, and a magnetic scale fixed on the limit switch rod 1 2. In this embodiment, there is a long slot (not shown in the figure) on the limit switch rod 1, and the magnetic scale 2 is fixed in the long slot. Of course, the utility model is not limited to this fixed installation method The main function of the magnetic grating ruler 2 is to complete the displacement measurement of the piston rod 12 together with the encoder 3 located on the support 7. When the relevant scale on the magnetic grating ruler 2 passes through the encoder 3, the encoder 3 will The data is collected and sent to the host computer, so that the high and low switching of the force and the fast and slow switching of the speed can be determined according to the needs of the product to ensure the quality of the die-casting product; in addition, because the magnetic scale 2 and the encoder 3 are non-contact Sensing is used to collect data, so there is no contact stress and contact wear between them, and the detection results are accurate.

The limit switch rod 1 is covered with an induction ring 10, which together with the induction switch 9 on the support 7 completes the detection of whether the piston rod 12 has returned to the starting point of injection, and the induction ring 10 is fixed on the limit switch. on the rod 1, and the position of the induction switch 9 is also fixed. When the piston rod 12 is shot, the induction ring 10 corresponds to the position of the induction switch 9; after one or more injections, the piston rod 12 returns to the starting point, The limit switch rod 1 will return to the starting point synchronously, and the induction ring 10 will return to the position corresponding to the induction switch 9. The induction switch 9 will send relevant information back to the computer, so that the computer can send other actions to the die-casting machine based on this information. order; because the induction ring 10 and the induction switch 9 also adopt non-contact work, and also have the advantage of no contact wear.

A positioning plate 8 is also provided on the support 7, and its main function is to position the limit switch rod 1. After being positioned by the positioning plate 8, the limit switch rod 1 and the piston rod 12 are in the same horizontal plane parallel to each other; , the limit switch rod 1 is connected to the piston rod 12 through the connecting plate 6, so that the limit switch rod 1 and the piston rod 12 maintain synchronous displacement; only in this way, the stroke displacement of the limit switch rod 1 and the stroke displacement of the piston rod 12 In other words, the stroke displacement of the piston rod 12 can be obtained only by detecting the stroke displacement of the limit switch rod 1 .

The limit switch rod 1 is equipped with a protective tube 4, its main function is to effectively protect the limit switch rod 1 and the magnetic scale 2 fixed on the limit switch rod 1, and avoid the limit caused by collisions and other reasons. Damage to switch lever 1 and magnetic scale 2.

Encoder 3 is provided with a sheet metal protective cover 5, which mainly plays a role in protecting encoder 3, and avoids polluting encoder 3 from the harsh environment at the die-casting site.

The support 7 is also provided with a lubricating port 11, and the lubricating port 11 is connected with the movement channel of the limit switch rod 1. After several working cycles of the machine, a certain amount of lubricant can be put into the lubricating port 11 to effectively lubricate the limit switch rod 1 to maintain the limit switch rod 1 .

The above is only a preferred embodiment of the utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the utility model patent application scope are all included in the utility model patent application scope .

Claims (5)

1. An injection stroke displacement control device, characterized in that: it includes a support (7), a limit switch rod (1) arranged on the support (7), fixed on the limit switch rod (1) The magnetic grating scale (2) on the top, the induction ring (10) sleeved on the limit switch rod (1), the positioning plate (8) located on the support (7); and the positioning plate (8) located on the support (7) Encoder (3) and induction switch (9) on the upper; the limit switch rod (1) is connected with the piston rod (12) through the connecting plate (6), and the positioning plate (8) connects the limit switch rod ( 1) It is positioned parallel to the piston rod (12) in the same horizontal plane. 2. The injection stroke displacement control device according to claim 1, characterized in that: the limit switch rod (1) is provided with a long groove, and the magnetic scale (2) is fixed in the long groove. 3. The injection stroke displacement control device according to claim 1, characterized in that: the limit switch rod (1) is covered with a protective tube (4). 4. An injection stroke displacement control device according to any one of claims 1 to 3, characterized in that: the encoder (3) is externally provided with a sheet metal protective cover (5). 5. The injection stroke displacement control device according to claim 4, characterized in that: the support (7) is also provided with a lubricating port (11), and the lubricating port (11) is connected with the limit switch lever ( 1) The motor channel connection.

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