Pre-stretching device and operation method thereof
A pre-stretching and workbench technology, applied in the direction of metal chains, etc., can solve problems such as length errors and affecting machine accuracy, and achieve the effects of reducing errors, reliable connections, and eliminating gaps
Active Publication Date: 2014-11-26
天津北瀛再生资源回收利用有限公司
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
There is a gap at each link of the new chain, and then through the intermittent movement of this type of equipment, the alternating load will cause an error between the measured length of the chain and the stretched length of the chain after running in the machine, affecting the accuracy of the machine
Method used
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Experimental program
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Effect test
Embodiment
[0026] Embodiment: a kind of pre-stretching device (see Figure 1-Figure 3 ), including a chain 28, characterized in that it also includes a power unit, an intermittent transmission device 16, a sprocket I21 and a sprocket II18; the output end of the power unit is connected to the input end of the intermittent transmission device; the intermittent transmission device The output end is connected with the intermittent output shaft sprocket 21; a chain 28 is installed on the sprocket I21 and sprocket II18.
[0027] A deceleration device is installed between the power unit and the intermittent transmission device 16; the output end of the power unit connects a small pulley 20; the input end of the intermittent transmission device 16 connects a large pulley 14; the small pulley 20 and The large pulley 14 is connected by a transmission belt 27 to form a speed reducing device. (See Figure 1-Figure 3 )
[0028] The small pulley 20 is connected with the medium deceleration large pu...
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A pre-stretching device comprises chains and is characterized by further comprising a power device, an intermittent drive device, a sprocket I and a sprocket II. An output end of the power device is connected with an input end of the intermittent drive device. An output end of the intermittent drive device is connected with an intermittent output shaft sprocket. The chains are mounted on the sprocket I and the sprocket II. An operation method includes mounting the stretched chains onto the sprocket I and the sprocket II through connecting heads; turning on a switch of the power device to allow the stretched chains to move intermittently; checking moving operation of the chains during rotation, and lubricating the chains by oil halfway; and washing the stretched chains, and turning into the next step. The pre-stretching device and the operation method have the advantages that the novel chains are stretched, gaps at chain links are eliminated, error in a subsequent chain measuring value is reduced, and precision and stability of the device in operation are increased. The stretched chains are guaranteed to be even in stress, high in straightness and reliable in connection after a tensioning sprocket is tensioned.
Description
(1) Technical field: [0001] The invention is suitable for printing machines, relates to a pre-stretching device and its working method, and is suitable for stretching chains. (2) Background technology: [0002] In the existing post-press equipment sheet-fed die-cutting and hot stamping equipment, the devices that complete the transportation of printed products to each station for processing are tooth rows and chains. The precision of the chain directly leads to the precision of the printing process, and ensuring the precision of the chain is the main way and an important guarantee to improve the precision of the printing process. It is well known that when the chain is used on the equipment, it will be stretched after a period of use, and such a situation will directly lead to the destruction of precision and affect the processing quality. In the prior art, the new chain is generally measured and installed directly without a chain stretching process. There is a gap at each...
Claims
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IPC IPC(8): B21L19/00
Inventor 赵军峰
Owner 天津北瀛再生资源回收利用有限公司