Integrating device capable of controlling wall thickness of bottle blowing machine with crank connecting rod mechanism driven by motor

A crank-link mechanism and motor-driven technology is applied in the field of plastic extrusion blowing wall thickness control devices, which can solve the problems of long-term use by users that affect the wall thickness control effect, shortened operating life of the screw mechanism, and short extrusion and blowing control movement strokes. Achieve easy installation and maintenance, avoid hydraulic pollution, stable and reliable structure

Pending Publication Date: 2019-06-14
上海弋朋自动化科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of controlling the wall thickness of the transmission device with screw structure, the motion stroke of extrusion blowing control is short, the force is large, and the lubrication of the screw nut drive pair is insufficient, which greatly reduces the operating life of the screw mechanism under such motion conditions. Or the accuracy of the screw is greatly reduced, which will eventually affect the effect of wall thickness control and the long-term use of users

Method used

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  • Integrating device capable of controlling wall thickness of bottle blowing machine with crank connecting rod mechanism driven by motor
  • Integrating device capable of controlling wall thickness of bottle blowing machine with crank connecting rod mechanism driven by motor
  • Integrating device capable of controlling wall thickness of bottle blowing machine with crank connecting rod mechanism driven by motor

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] see Figure 1-3 , in an embodiment of the present invention, an integrated device for controlling the wall thickness of a blow molding machine by a motor-driven crank-link mechanism, including a frame, a servo motor 4 and a crank-link mechanical device are installed on the top of the frame, and the servo The motor 4 is connected with the mandrel moving platen 7 through a crank connecting rod mechanical device and drives the mandrel moving platen 7 to move up and down; the bottom of the frame is fixed with a plurality of extrusion dies 9 for extrusion blowing moulds, The extrusion die head 9 is equipped with an extrusion die mandrel 8, the upper end of the extrusion die mandrel 8 is connected and fixed with the mandrel movable platen 7, and the movement of the mandrel is controlled by the servo motor 4 and the crank connecting rod mechanical device. The position of the template 7 is further controlled to control the position of the extrusion die mandrel 8 relative to the...

Embodiment 2

[0036] see figure 1 and 2 , the difference between this embodiment and embodiment 1 is:

[0037] In this embodiment, the crank-link mechanical device includes a crank-link mechanism box 5, which is installed and fixed on the upper mounting plate 14 of the frame, and the inner upper part of the crank-link mechanism box 5 A crank eccentric shaft 10 is provided, and one or two servo motors 4 can be provided. When the servo motor 4 is one, the servo motor 4 is installed and fixed on the outside of the crank linkage casing 5, and the crank eccentric shaft 10 The side end of the motor extends out and serves as the rotor shaft of the servo motor 4 at the same time, or the output shaft of the servo motor 4 is connected with the crank eccentric shaft 10 through a coupling; when there are two servo motors 4, the two servo motors 4 are installed and fixed respectively On both sides of the outside of the crank-link mechanism casing 5, and the two ends of the crank eccentric shaft 10 res...

Embodiment 3

[0042] see figure 1 , the difference between this embodiment and embodiments 1 and 2 is:

[0043] In this embodiment, it also includes a digital crank connecting rod cam curve conversion software system and a servo drive controller 3 for controlling the servo motor 4, the servo drive controller 3 is electrically connected with the servo motor 4, and the digital crank connecting rod cam The curve conversion software system includes human-computer interaction interface and digital conversion crank connecting rod curve software. Through the digital crank connecting rod cam curve conversion software system, the digital control cam curve of the wall thickness of the product is converted into the motion angle cam curve of the crank connecting rod mechanical device. The calculation data is transmitted to the servo drive controller 3 through the digital interface (industrial Ethernet), and the servo drive controller 3 controls the movement of the servo motor 4 .

[0044] Method to re...

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PUM

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Abstract

The invention relates to a plastic extruding and blowing wall thickness control device, in particular to an integrating device capable of controlling the wall thickness of a bottle blowing machine with a crank connecting rod mechanism driven by a motor. The integrating device comprises a machine frame, wherein a plurality of extruding mold heads for extruding bottle blowing molds are fixed to thebottom of the machine frame; an extruding mold head core rod is arranged in each extruding mold head in a cooperating manner; a servo motor and a crank connecting rod mechanical device are mounted atthe top of the machine frame; the servo motor is connected with a core rod moving mold plate through the crank connecting rod mechanical device, and is used for driving the core rod moving mold plateto move up and down; and the upper ends of the extruding mold head core rods are connected with and fixed to the core rod moving mold plate. The integrating device disclosed by the invention is simplein structure, high in precision of a control device, energy-saving and environmentally-friendly; the motion of the crank connecting rod mechanical device is combined with the motion of the servo motor, so that under the motion requirements of being short in stroke and heavy in load, the integral structure is stable and reliable, and the service life is greatly prolonged; and besides, the curve control is performed by a digital cam which is in servo driving, so that the precision of wall thickness of products is notably improved, and the production efficiency is improved.

Description

technical field [0001] The invention relates to a plastic extrusion blowing wall thickness control device, in particular to an integrated device for controlling the wall thickness of a bottle blowing machine driven by a motor. Background technique [0002] Hollow plastic products are made by blow molding, because the product strength requirements stipulate the minimum wall thickness. In order to save materials, it is necessary to meet the minimum wall thickness requirements at the largest and smallest positions of the product, and at the same time, it is necessary to avoid material waste. Therefore, the blow molding machine with wall thickness control is commonly used, and the wall thickness control cylinder is commonly controlled by a proportional electro-hydraulic valve. The piston rod of the cylinder is connected to the extrusion blowing die head of the blow molding machine, and the oil cylinder realizes the positioning of the opening of the extrusion die head. Control th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C49/78B29C49/04B29C49/42B29C48/30
Inventor 任兵姜继明陈敏严丽娟
Owner 上海弋朋自动化科技有限公司
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