WO2017107024A1

WO2017107024A1 - Stroke adjustable cylinder for feeder

Info

Publication number: WO2017107024A1
Application number: PCT/CN2015/098135
Authority: WO
Inventors: 魏艳玲
Original assignee: 魏艳玲
Priority date: 2015-12-21
Filing date: 2015-12-21
Publication date: 2017-06-29

Abstract

A stroke adjustable cylinder for a feeder, comprising a cylinder body (1) and a cylinder base (2). An air inlet connector (3) and an air outlet connector (4) are provided on the outer sides of the cylinder body (1) and the cylinder base (2), respectively. The cylinder base (2) consists of a large diameter section and a small diameter section. The small diameter section is inserted into an inner cavity of the cylinder body (1). The cylinder base (2) is provided with an air outlet passage (5). Adjustment threads are provided on the middle portion of an inner wall of the cylinder body (1). An adjustment rotation block (6) is inserted into an upper end of the cylinder body (1). The lower portion of the adjustment rotation block (6) is threadedly connected to an inner wall (7) of the adjustment threads. A piston (8) and a piston rod (8a) integrated with the piston (8) are provided in the inner cavity of the cylinder body (1). The piston rod (8a) passes though the cylinder base (2) and is connected to an upper feed roller. An air inlet cavity (9) is formed between the piston (8) in the cylinder body (1) and the adjustment rotation block (6), and is communicated with the air inlet connector (3). An air outlet cavity (10) is formed between the piston (8) in the cylinder body (1) and the cylinder base (2), and is communicated with the air outlet connector (4) by means of the air outlet passage (5). In this way, the stroke of the cylinder can be conveniently adjusted, and the roller nip of a leveling machine or a feeder can be adjusted.

Description

Stroke adjustable cylinder for feeder

Technical field

The present invention relates to a cylinder, and more particularly to an adjustable stroke cylinder.

Background technique

In the prior art, there is an adjustable stroke cylinder, the structure comprising a cylinder block, the upper side of the cylinder block is provided with a gas rod extending outwardly from the cylinder block for linear reciprocation, and the cylinder block is provided with a limit of the gas rod a cap, the limit cap is provided with a threaded hole at an end of the gas rod, and a stroke adjusting nut is provided through the threaded hole. The cylinder adjusts the cylinder stroke through the limit cap, and adjusts the position of the limit cap through the stroke adjustment nut. The disadvantage is that the limit cap is arranged outside the cylinder block, and there is a surplus of the air cavity in the cylinder during operation, which causes a large amount of gas to be wasted during work, which increases the production cost.

Summary of the invention

SUMMARY OF THE INVENTION It is an object of the present invention to provide an adjustable stroke cylinder for a feeder that allows for convenient adjustment of the stroke of the cylinder and reduced production costs.

The object of the present invention is achieved by a stroke adjustable cylinder for a feeder, comprising a cylinder body and a cylinder base fixedly mounted at a lower end of the cylinder body, wherein the cylinder body and the outer side of the cylinder base are respectively provided with an air inlet joint And the air outlet joint, the cylinder base is composed of a large diameter section and a small diameter section, the small diameter section is inserted into the cylinder body cavity, and the cylinder base is provided with an outlet passage connected with the air outlet joint; the cylinder body is provided with an adjustment thread in the middle of the inner wall of the cylinder, and the cylinder An adjusting rotating block is inserted into the upper end of the body, and a lower part of the rotating block is screwed to the inner wall of the adjusting thread. The inner cavity of the cylinder is located below the inner wall of the adjusting thread, and is provided with a piston and a piston rod integrated with the piston. The piston rod passes through the cylinder base. And connecting with the upper feeding roller, an air inlet chamber is formed between the inner piston of the cylinder body and the adjusting rotating block, the air inlet chamber is in communication with the air inlet joint, and an air chamber is formed between the inner piston of the cylinder body and the cylinder base The outlet chamber is connected to the outlet joint via an outlet passage.

When the invention is used, the rotation adjusting block is rotated, the adjusting rotating block spirals up along the inner wall of the adjusting thread, the gap between the piston and the adjusting rotating block becomes larger, the volume of the inlet cavity becomes larger, the movable range of the piston increases, and the cylinder stroke is adjusted. The gas is drawn in from the air inlet joint and is exhausted from the air outlet joint, pushing the piston rod outward, and the gas is taken in from the air outlet joint and out of the air inlet joint, pushing the piston rod to contract inward. Compared with the prior art, the invention has the advantages of simple structure and convenient adjustment, and the piston can move in the air inlet chamber and the air outlet chamber, and there is no excess air chamber, so as to prevent the gas from filling the air chamber first to push the piston and prevent waste of gas. The protruding end of the piston rod of the device is connected with the upper feeding roller of the feeder through the connecting frame, and the gap between the upper feeding roller and the lower feeding roller of the feeding machine is adjusted by controlling the stroke of the piston rod of the cylinder, and the device can also be used for Adjust the nip of the screed.

In order to adjust the stroke of the cylinder more intuitively, the upper part of the rotating block and the upper end surface of the cylinder body are adjusted. There is a scale ring that shows the stroke of the cylinder. The scale value on the scale ring corresponds to the gap between the upper feed roller and the lower feed roller, and the gap between the upper feed roller and the lower feed roller can be accurately adjusted according to the scale value.

In order to slow the impact between the piston and the adjusting rotating block, a rubber pad is embedded in the lower portion of the adjusting rotating block, and an outer convex portion matching the rubber pad is disposed at the upper end of the piston. When the piston moves up and down, the top of the piston is in contact with the rubber pad of the adjusting rotating block, which acts as a shock absorbing buffer to protect the piston and prolong its service life.

As a further improvement of the present invention, an upper body cylinder sleeve is disposed between the adjusting rotating block and the inner wall of the cylinder body, a lower body cylinder sleeve is disposed between the piston and the inner wall of the cylinder body, and a base cylinder is disposed between the piston rod and the cylinder base. set.

DRAWINGS

Figure 1 is a schematic view of the structure of the present invention.

2 is a schematic structural view of a cylinder base.

Among them, 1 cylinder body, 2 cylinder base, 2a small diameter section, 2b large diameter section, 3 air inlet joint, 4 air outlet joint, 5 air outlet passage, 6 adjustment rotary block, 7 adjustment thread inner wall, 8 piston, 8a piston rod, 8b Outer convex part, 9 air inlet chamber, 10 air outlet chamber, 11 scale ring, 12 rubber pad, 13 upper body cylinder sleeve, 14 lower body cylinder sleeve, 15 base cylinder sleeve.

detailed description

As shown in FIG. 1 and FIG. 2, it is an adjustable stroke cylinder for a feeder, comprising a cylinder body 1 and a cylinder base 2 fixedly mounted at a lower end of the cylinder body 1, and an outer side of the cylinder body 1 and the cylinder base 2 are respectively provided The air inlet joint 3 and the air outlet joint 4, the cylinder base 2 is composed of a large diameter section 2b and a small diameter section 2a, the small diameter section 2a is inserted into the inner cavity of the cylinder body 1, and the cylinder base 2 is provided with an air outlet passage 5 connected to the air outlet joint 4; An adjusting thread is arranged in a middle portion of the inner wall of the body 1. The upper end of the cylinder body 1 is inserted with an adjusting rotating block 6. The lower part of the adjusting rotating block 6 is screwed with the adjusting thread inner wall 7. The inner cavity of the cylinder body 1 is located below the adjusting thread inner wall 7 and is provided with a piston 8 and a piston rod 8a integrally connected with the piston 8, the piston rod 8a passes through the cylinder base 2 and is connected with the upper feed roller, and an internal combustion chamber 9 is formed between the internal piston 8 of the cylinder body 1 and the adjustment rotary block 6, and the intake chamber 9 is The air inlet joint 3 is in communication with each other, and an air chamber 10 is formed between the piston 8 of the cylinder body 1 and the cylinder base 2, and the air outlet chamber 10 communicates with the air outlet joint 4 via the air outlet passage 5. A scale ring 11 for displaying the stroke of the cylinder is provided between the upper portion of the adjustment rotary block 6 and the upper end surface of the cylinder body 1. A rubber pad 12 is embedded in the lower portion of the adjusting rotating block 6, and an outer convex portion 8b matching the rubber pad 12 is disposed at the upper end of the piston 8. An upper body cylinder sleeve 13 is disposed between the adjusting rotating block 8 and the inner wall of the cylinder body 1. A lower body cylinder sleeve 14 is disposed between the piston 8 and the inner wall of the cylinder body 1, and a base cylinder sleeve is disposed between the piston rod 8a and the cylinder base 2. 15.

When the device is in use, the rotation adjusting block 6 is rotated, the adjusting rotating block 6 spirals up along the adjusting thread inner wall 7, the gap between the piston 8 and the adjusting rotating block 6 becomes larger, the volume of the intake chamber 9 becomes larger, and the movable range of the piston 8 When the cylinder stroke is increased, the gas is taken in from the air inlet joint 3 and is exhausted from the air outlet joint 4, and the piston rod 8a is pushed outward to protrude from the gas. The air outlet joint 4 is intake air and is exhausted from the air intake joint 3, and pushes the piston rod 8a to contract inward. The device has the advantages of simple structure and convenient adjustment, and the piston 8 can move in the air inlet chamber 9 and the air outlet chamber 10, and there is no excess air chamber, so as to prevent the gas from filling the air chamber first to push the piston and prevent waste of gas. The protruding end of the piston rod of the device is connected with the upper feeding roller of the feeder through the connecting frame, and the gap between the upper feeding roller and the lower feeding roller of the feeding machine is adjusted by controlling the stroke of the piston rod of the cylinder, and the device can also be used for Adjust the nip of the screed.

The present invention is not limited to the above embodiments, and based on the technical solutions disclosed by the present invention, those skilled in the art can make some substitutions for some of the technical features without any creative labor according to the disclosed technical content. Modifications, such substitutions and modifications are within the scope of the invention.

Claims

An adjustable stroke cylinder for a feeder, comprising a cylinder body and a cylinder base fixedly mounted at a lower end of the cylinder body, wherein the outer side of the cylinder body and the cylinder base are respectively provided with an air inlet joint and an air outlet joint, wherein: The cylinder base is composed of a large diameter section and a small diameter section, and the small diameter section is inserted into the inner cavity of the cylinder body, and the cylinder base is provided with an air outlet passage connected to the air outlet joint; the middle part of the inner wall of the cylinder body is provided with an adjustment thread, and the upper end of the cylinder body is inserted and adjusted. Rotating the block, adjusting the lower part of the rotating block and screwing the inner wall of the adjusting thread, wherein the inner cavity of the cylinder is located below the inner wall of the adjusting thread, and is provided with a piston and a piston rod integrally connected with the piston, the piston rod passes through the cylinder base and the upper feeding roller Connected, an air intake chamber is formed between the inner piston of the cylinder body and the adjusting rotating block, the air inlet chamber is in communication with the air inlet joint, and an air chamber is formed between the inner piston of the cylinder body and the cylinder base, and the air outlet chamber The outlet passage is connected to the outlet joint.
A stroke adjustable cylinder for a feeder according to claim 1, wherein a scale ring for displaying a cylinder stroke is provided between an upper portion of the adjustment rotary block and an upper end surface of the cylinder body.
The stroke adjustable cylinder for a feeder according to claim 1 or 2, characterized in that: the lower part of the adjusting rotating block is embedded with a rubber pad, and the upper end of the piston is provided with an outer convex portion matched with the rubber pad. .
The stroke adjustable cylinder for a feeder according to claim 1 or 2, wherein an upper body cylinder sleeve is disposed between the adjusting rotating block and the inner wall of the cylinder body, and between the piston and the inner wall of the cylinder body. The lower body cylinder sleeve is provided, and a base cylinder sleeve is arranged between the piston rod and the cylinder base.