Push-back pressure ring injection pressure closed-loop device
A pressure ring, back-type technology, applied in the field of injection pressure detection devices, can solve problems such as affecting the accuracy of injection pressure, and achieve the effects of significant cost savings, high sensitivity, and reduced requirements
Active Publication Date: 2012-02-01
NINGBO ZHAFIR PLASTICS MACHINERY CO LTD
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Problems solved by technology
However, since the rotation of the injection screw will cause the injection nut 4 to generate a small amount of rotational torque, and the pressure sensor 3 for measuring the injection pressure is very sensitive, it will affect the accuracy of the actual measured injection pressure
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Embodiment Construction
[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0017] Such as figure 2 As shown, the push-back pressure ring injection pressure closed-loop device mainly consists of the following components: Injection platform front plate 1, pre-molded seat 2, pressure sensor 3, injection nut 4, tie rod 5, injection seat 6, X-shaped guide plate 12 .
[0018] Such as image 3 As shown, the above-mentioned X-shaped guide plate 12 is X-shaped, with guide holes 14 at its four corners, and a through hole in the middle with a connecting hole 15 for fixing the pressure sensor 3 and a connecting hole 16 for fixing the injection nut.
[0019] The above-mentioned pressure sensor 3 is fixed with screws through the connecting hole 15 on the X-shaped guide plate 12, and the injection nut 4 is fixed with screws through the connecting hole 16 on the X-shaped guide plate 12, see Figure 4 .
[0020] The above-mentio...
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Back-type pressure ring injection pressure closed-loop device, including pre-molding seat, tie rod, injection platform rear plate and pressure sensor, an X-shaped guide plate is installed between the pre-molding seat and the injection platform rear plate, and one side of the X-shaped guide plate is fixed Lead screw nut, the pressure sensor is fixed on the other side, and the four corners of the X-shaped guide plate are sleeved on the pull rod. The advantages of the present invention are: 1. The device still installs the pressure sensor on the outside of the pre-molding device. While ensuring the accuracy and high sensitivity, the installation and maintenance are very convenient, and because the installation environment is good, the pressure on the pressure sensor is greatly reduced. requirements, the cost savings are significant. 2. Since the X guide plate is added between the pre-plastic seat and the rear plate of the injection platform, the screw nut and the pressure sensor are respectively installed on the two sides of the X guide plate, thereby separating the pressure sensor and the screw nut, eliminating the need for Due to the rotation of the lead screw, the lead screw nut generates torque, which causes the pressure sensor to produce measurement errors, which improves the detection accuracy of the injection pressure.
Description
technical field [0001] The invention relates to an injection pressure detection device of an injection mechanism of an all-electric injection molding machine. Background technique [0002] The pressure detection of the existing ordinary hydraulic injection molding machine is generally equipped with a proportional flow pressure servo valve in the injection cylinder system, and is measured through the pressure servo valve. Since the pressure signal detected by this detection method is the pressure of the injection cylinder, it cannot directly reflect the actual pressure of the screw, and because the pressure loss in the cylinder cannot be compensated, the resolution accuracy of the cylinder pressure is generally only one tenth of the resolution accuracy of the screw pressure. . [0003] There are two ways to install the pressure sensor for the pressure detection of the existing all-electric injection molding machine. One way is to install the pressure sensor inside the pre-mo...
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IPC IPC(8): B29C45/77
Inventor 傅南红王如波茅洪辉
Owner NINGBO ZHAFIR PLASTICS MACHINERY CO LTD