Rubber sleeve exhaust structure

Abstract

This invention relates to a venting structure for a rubber tube. It mainly consists of a rubber tube piston housed within the cavity of a rubber tube, and a piston pusher with its push head positioned within the cavity of the rubber tube, contacting the rubber tube piston. During use, high-pressure air is fed through the push head to push the rubber tube piston, compressing the rubber within the tube and expelling it. If high-pressure air flows through the gap between the push head and the rubber tube to the rubber tube piston, it flows into the relatively low-pressure stagnation chamber of the rubber tube piston and is then discharged through an vent hole located at the center of the piston pusher's push rod, which communicates with the stagnation chamber of the rubber tube piston. This effectively prevents high-pressure air from entering the rubber and forming air bubbles within it.

Claims

1. A rubber tube venting structure, comprising: a rubber tube having a cavity inside, the upper end of the rubber tube forming an opening in the cavity, and a glue inlet at the lower end of the rubber tube communicating with the cavity; a rubber hose piston disposed within the cavity of the rubber tube, a glue-containing space being formed between the rubber hose piston and the glue inlet of the rubber tube, and a stagnation chamber recessed at the upper end of the rubber hose piston; and a piston pusher comprising a pusher head disposed within the cavity of the rubber tube, the lower end of the pusher head abutting against the upper end of the rubber hose piston, and a pusher rod connected to the upper end of the pusher head, the pusher rod having a vent hole at its center, the end of the vent hole extending to the lower end of the pusher head and communicating with the stagnation chamber of the rubber hose piston.

2. The venting structure of the rubber sleeve as described in claim 1, wherein, The exhaust structure of the rubber cylinder further includes a set of uprights. A connecting block is formed at the center of the lower end of the set of uprights to correspond to and fit with the opening of the cavity of the rubber cylinder. A through hole is provided in the set of uprights through the center of the connecting block. The push rod of the piston pusher passes through the through hole of the set of uprights. The upper end of the push rod protrudes out of the through hole of the set of uprights. An air flow channel is provided in the set of uprights. The air flow channel forms an air inlet and an air outlet. The air inlet is used to connect to a compressed air source pipeline. The air outlet is located at the lower end of the connecting block to communicate with the cavity of the rubber cylinder.

3. The venting structure of the rubber sleeve as described in claim 2, wherein, The lower end of the assembly base is further provided with a slot, the connecting block is formed at the center of the slot, and a notch is provided on each of the two opposite sides of the slot. Additionally, a locking flange is formed on each of the two opposite sides of the upper end of the rubber tube to engage or disengage with the slot provided on the assembly base.

4. The venting structure of the rubber sleeve as described in claim 1, wherein, The lower end of the propulsion head is provided with several guide grooves, which extend from the periphery of the lower end of the propulsion head to the end of the exhaust hole formed at the lower end of the propulsion head.

5. The venting structure of the rubber sleeve as described in claim 1, wherein, The piston thruster has a groove at the lower end of the thrust head, and the exhaust port of the thrust rod extends to the groove at the lower end of the thrust head. Several guide grooves are provided at the lower end of the thrust head, and the guide grooves extend from the periphery of the lower end of the thrust head to the groove.

6. The venting structure of the rubber sleeve as described in claim 1, wherein, The piston pusher has a groove at the lower end of the push head. The exhaust port of the push rod extends to the groove at the lower end of the push head. The rubber tube exhaust structure further includes a position sensing unit, which includes a sensing element and at least one sensor. The sensing element is assembled in the groove of the piston pusher's push head. A through hole is penetrating the center of the sensing element. The through hole of the sensing element corresponds to the position of the exhaust port end of the piston pusher. The exhaust port communicates with the stagnation chamber of the rubber tube piston through the through hole of the sensing element. The at least one sensor is disposed at an appropriate position on the outside of the rubber tube to sense and connect with the sensing element.

7. The venting structure of the rubber sleeve as described in claim 6, wherein, The position sensing unit includes a number of sensors, which are spaced apart along the length of the rubber tube.

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