Design of Steel Barrel Production Line (Part Five)

(E ) retaining means and the robot

In the automatic steel drum production line may need to use some special clamping device or robot grab bucket member to complete the spatial position of the conveying operation of the complex . The clamping device should be flexible and reliable operation , high degree of automation . For example on the barrel body molding machine clamping device and the vertical lifting barrels are gripping the production line conveyor drum parts , etc. are to be sent to the precise machining position cooperage equipment .Seam welding of steel before rolling robot loading points for the steel sheets and accurately conveyed to the middle of the rolling roller apparatus . In the steel drum coating production lines hanging conveyor systems, steel drums , barrel body, such as the hanging bucket bottom is the most common holding device . Steel drums in an automated production line , the clamping means and the robot is widely used for automatic production plays a very important role.

Clamping means or robot gripper should meet the following basic requirements:

( A ) must be able to reliably capture barrel pieces ;

( 2 ) does not scratch the barrel drum parts nor deformation ;

( 3 ) can not grasp the barrel material piece original order disrupted ;

( 4 ) follows the small, lightweight , rugged , strive to achieve a simple structure .

Based on the principle of manual grab bucket member , the clamping device can be broadly classified into the following types ( Figure 21 ) :


Clamping device 21 of the type

Figure 22 is a common chute leveraged jaws . Commonly used in the barrel pieces of hanging suspended conveyor .


Figure 22 Chute leveraged jaws


Examples clamping means

Figure 23 is a common suction manipulator . Multi- plate production line for steel drums of sheets transport . It is the suction chamber by removing the air pump to generate negative pressure suction holding plate .


Figure 23 Suction robot

1 - control wheel China; - rubber suction cup ; 3 , chute ; 4 - Bracket


Suction robot instance

( Six ) storage devices

When the automatic production line tact each host appeared unbalanced state, or a host in need of replacement materials , adjusting the relevant authorities , in case of failure stop , in order to ensure the full range of work, you must set up an automated production line corresponding intermediate storage device so that it becomes flexible or semi-flexible automatic production line , in order to facilitate increased productivity and product quality.

Such as steel coils uncoiling leveling cutting production line, the front of the open-book leveling of continuous production, then under paragraph host is often intermittent feed production , in order to balance the front and rear section of line beat , usually in the middle part to set up a buffer device , make hosts can work around uninterrupted .Shown in Figure 24 .


Figure 24 uncoiling leveling production line storage devices


Examples storage device

Figure 25 shows the automatic production line for the barrel bottom flange of the closure of the intermediate conveying and storage device . From flange to flange finishing process by conveying chute into the turntable inside , and then along the helical guide moves from the inside out , and then transported to the beat of a fixed flange and lid lamination processes. As the spindle speed can be adjusted to help accommodate changes in production capacity around the host and reasonable control output time .

 

Figure 25 schematic rotary type storage devices

Fourth, drums automatic production line productivity

( A ) automatic production line productivity

1 , the productivity of the flexible manufacturing line



Where : Q- productivity ; TK- basic production process time ; Ti- assisted time ; ΣTn- loss time and outside the loop .

2, the productivity of the production line rigid



Where : Q- productivity ; TK- basic production process time ; Tf- assisted time ; Tn- lost time outside the loop ; q- production lines producing host station number.

(B ) factors affecting the productivity of the production line

1 , automatic sequential composition rigid drums actual production line productivity , with the production line to increase the number of master units , a corresponding increase in productivity , but it is not a simple proportional relationship . When the number of units increased to a certain number , and then increase the number of host units , but decreased productivity , mainly due to loss of time outside the loop to become a major factor affecting productivity .

2 , the flexible automated production lines , with the increase in the number of master units , the initial increase productivity quickly , then slow until steady . Loss of time outside the loop under the same conditions , the flexible automated production line is always higher than the productivity of the production line rigid .

3 , semi- flexible production line impact on productivity of the number of segments .Automatic production line segments outside the loop should help reduce the loss of time and increase productivity.

(C ) means to improve the productivity of the production line

In order to improve the productivity of production lines , we must carefully analyze the main factors affecting productivity in order to take appropriate measures to improve the productivity of the production line .

1 , it can be seen from the formula productivity , reducing TK, Tf, ΣTn, productivity can be improved . To this end , the design should try to make time to assist with the basic production process time Tf TK coincidence , co- kind journey time empty or partially overlap one another coincidence .

2, increasing the number of units cooperage host can improve the operating speed of the production line , reducing adjustment and maintenance time .

3 , the use of advanced equipment, improve the reliability of the device itself , reducing adjustment and maintenance time .

4, using the continuity cooperage equipment to minimize or eliminate the auxiliary operating time.

5, the process longer cooperage process in parallel with the completion of a number of units cooperage machine , or dispersed in a number of work stations jointly completed .

6, regular servicing and maintenance of equipment , can reduce the number of accidents devices .

7 , set the necessary automatic detection system. Implementation of automatic diagnosis, automatic exclusion , automatic alarm and automatic protection to reduce downtime caused by the accident .

8 , increase the production and operation of the organizers , the management level , try to eliminate the impact of human factors and losses .