Self-adaptive pneumatic buffer device

Abstract

A self-adaption pneumatic buffering device is used for conducting non-springback impact buffering on moving materials in a production line and is provided with a buffering air cylinder, an impact disc is further arranged at the end of a piston rod of the buffering air cylinder, and after the moving materials impact the impact disc, the buffering air cylinder can generate springback compression to achieve buffering on the materials. A pressure balance system is further arranged, the pressure balance system is provided with a first gas circuit and a second gas circuit, the first gas circuit and the second gas circuit are connected with a gas source through a three-way connector, and the first gas circuit and the second gas circuit are connected with the buffering air cylinder in a penetrating mode and distributed on the two sides of a piston in the buffering air cylinder respectively. When the impact disc is impacted by materials, the piston rod can be impacted and retracted without rebounding under the matched adjustment of the first gas path and the second gas path. According to the technical scheme, springback-free buffering of the air cylinder device is achieved by arranging the pressure balance system capable of achieving precise pressure adjustment.

Description

Technical Field

[0001] This invention relates to the technical field of shock absorption and buffering in material transportation in production lines, and specifically to an adaptive pneumatic buffer device for buffering bar stock. Background Technology

[0002] In today's rapidly developing industrial sector, cushioning technology has been applied to various industrial fields. For example, in common industrial production, there are frequent scenarios involving the handling or transfer of materials. Once materials are handled or transferred, they generate motion and inertia. Sometimes, to stop their original trajectory as quickly as possible, cushioning products are needed. In some industrial fields with high production precision or safety requirements, there is an even greater need for cushioning products that do not rebound and do not cause collision damage to the handled materials. Therefore, traditional cushioning products are no longer suitable for the current high-demand market. For example, pure spring-type cushioning devices can no longer meet these technical requirements, and simple pressure-regulating cylinders are also becoming unsuitable for today's development environment due to the risk of rebound. Therefore, it has become an inevitable trend for those skilled in the art to develop an adaptive pneumatic cushioning device that can provide harmless cushioning to moving materials without the risk of rebound. Summary of the Invention

[0003] This embodiment provides an adaptive pneumatic buffer device that can provide damage-free cushioning for moving materials without the risk of rebound. It uses a conventional cylinder as the body of the buffer and a pressure balancing system that can achieve precise pressure regulation to achieve rebound-free cushioning of the cylinder. This technical solution has a simple structure, is easy to maintain and repair, has a wide range of applications, saves costs, and improves accuracy and efficiency.

[0004] Specifically, on one hand, an adaptive pneumatic buffer device is used to buffer moving material w in a production line without rebound. It includes a buffer cylinder q, and an impact disk p at the end of the piston rod of the buffer cylinder q. The moving material w can be buffered by the buffer cylinder q rebounding and compressing after impacting the impact disk p. It also includes a pressure balancing system y, which has a first air passage q1 and a second air passage q2. The first air passage q1 and the second air passage q2 are connected to an air source u via a three-way connector. Both the first air passage q1 and the second air passage q2 are interconnected with the buffer cylinder q and are respectively distributed on both sides of the piston inside the buffer cylinder q. When the impact disk p is impacted by the material w, the piston rod can retract without rebounding under the coordinated adjustment of the first air passage q1 and the second air passage q2.

[0005] According to one aspect of a specific embodiment of the present invention, the first air passage q1 is connected to the rear chamber of the buffer cylinder q, and a normally open reversing valve ck and a first electro-proportional valve db1 are connected in series in the first air passage q1. The first electro-proportional valve db1 can be used to adjust the pressure value of the rear chamber of the buffer cylinder q.

[0006] According to one aspect of a specific embodiment of the present invention, the second air passage q2 is interconnected with the front chamber of the buffer cylinder q, and a one-way throttle valve j, a second electro-proportional valve db2 and a normally closed directional valve cb are connected in series in the second air passage q2. The one-way throttle valve j realizes flow throttling and maintains stable control of the initial air pressure in the front chamber, and the normally closed directional valve cb performs air passage switching and pressure stabilization.

[0007] According to one aspect of a specific embodiment of the present invention, a control and adjustment device kk is further provided, which can control the normally open reversing valve ck, the first electro-proportional valve db1, the one-way throttle valve j, the second electro-proportional valve db2 and the normally closed reversing valve CB in a coordinated manner, so as to realize the precise adjustment of the pressure in the rear chamber of the buffer cylinder q by the first air passage q1, and the supply of air to the front chamber of the buffer cylinder q by the second air passage q2, thereby realizing the dynamic adaptation of air pressure. Attached Figure Description

[0008] The features, advantages and technical effects of exemplary embodiments of the present invention will now be described with reference to the accompanying drawings.

[0009] Explanation of serial numbers: material w, buffer cylinder q, impact plate p, pressure balance system y, first air path q1, second air path q2, air source u, normally open reversing valve ck, first electro-proportional valve db1, one-way throttle valve j, second electro-proportional valve db2, normally closed reversing valve cb, control and regulating device kk.

[0010] Figure 1 This is a schematic diagram of the basic structure of the overall layout of each component in an embodiment of the present invention.

[0011] Figure 2 This is a schematic diagram of material w impacting impact disk p in an embodiment of the present invention.

[0012] Figure 3 This is a schematic diagram of the retraction action of the buffer cylinder q in an embodiment of the present invention.

[0013] Figure 4 This is a schematic diagram of the y-pipeline structure of the pressure balancing system according to an embodiment of the present invention.

[0014] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale. Detailed Implementation

[0015] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of the present invention by way of example, but should not be used to limit the scope of the present invention. That is, the present invention is not limited to the described preferred embodiments, and the scope of the present invention is defined by the claims.

[0016] In the description of the embodiments of the present invention, it should be noted that, unless otherwise stated, "perpendicular" and "parallel" are not only absolute in a mathematical sense, but can be understood as "approximately perpendicular" and "approximately parallel".

[0017] Figure 1 This is a schematic diagram of the basic structure of the overall layout of each component in an embodiment of the present invention.

[0018] like Figure 1 As shown, this embodiment provides an adaptive pneumatic buffer device that can provide harmless cushioning to moving materials without the risk of rebound. It uses a conventional cylinder as the body of the buffer, and a pressure balancing system capable of precise pressure regulation achieves rebound-free cushioning. This technical solution has a simple structure, is easy to maintain and repair, has a wide range of applications, saves costs, and improves accuracy and efficiency. In this embodiment, a conveying device is installed on a flat surface. The material w is transported through the conveying device. Preferably, the material w is a long and slender material that moves at high speed from left to right on the conveying device. A buffer cylinder q is located at the right end of the conveying device, and a box-shaped pressure balancing system y is located below the buffer cylinder q. The buffer cylinder q is configured as a telescopic cylinder structure, and a circular impact plate p is provided at the end of its telescopic rod. After the high-speed moving material w is conveyed by the conveying device, it will collide with the circular impact plate p. Then, the pressure balance system y will adjust the pressure values ​​of the front and rear chambers of the buffer cylinder q to achieve the retraction and buffering of the telescopic rod of the buffer cylinder q, thereby reducing the risk of its rebound.

[0019] Figure 4 This is a schematic diagram of the y-pipeline structure of the pressure balancing system according to an embodiment of the present invention.

[0020] like Figure 4 As shown, according to one aspect of a specific embodiment of the present invention, the pressure balancing system y is disposed in a closed box, and an air source u, a first air path q1, and a second air path q2 are provided at the bottom of the box. Air in the air source u undergoes purification via a three-piece assembly (water separator, bidirectional overflow valve, and pressure gauge), and after pressure stabilization, enters an oil mist separator for further impurity filtration. Finally, the purified gas is divided into two paths via a three-way valve, one leading to the first air path q1 and the other to the second air path q2.

[0021] According to one aspect of a specific embodiment of the present invention, the first air passage q1 and the second air passage q2 are both interconnected with the buffer cylinder q and are respectively distributed on both sides of the piston in the buffer cylinder q. When the impact disk p is impacted by the material w, the piston rod can achieve impact retraction without rebound under the coordinated adjustment of the first air passage q1 and the second air passage q2.

[0022] According to one aspect of a specific embodiment of the present invention, the first air passage q1 is interconnected with the rear chamber of the buffer cylinder q, and a normally open reversing valve ck and a first electro-proportional valve db1 are connected in series in the first air passage q1. The arrangement of the valve groups is such that the pressurized air output from the air source u first reaches the normally open reversing valve ck through the pipeline. Since the normally open reversing valve ck is normally open, the pressurized air directly passes through the normally open reversing valve ck and then directly to the subsequent first electro-proportional valve db1. The pressurized air achieves precise control of the pressure input to the rear chamber of the buffer cylinder q through the pressure regulating action of the first electro-proportional valve db1, so that the pressure in the rear chamber of the buffer cylinder q can match the impact force of the material w hitting the impact plate p and can be adjusted in real time.

[0023] According to one aspect of a specific embodiment of the present invention, the second air passage q2 is interconnected with the front chamber of the buffer cylinder q, and a one-way throttle valve j, a second electro-proportional valve db2, and a normally closed directional valve CB are connected in series in the second air passage q2. The one-way throttle valve j cuts off the flow rate, maintaining stable control of the initial air pressure in the front chamber, while the normally closed directional valve CB switches the air passage and stabilizes the pressure. The valve group is arranged as follows: the pressurized air output from the air source u first reaches the second electro-proportional valve db2 through the pipeline. The pressure regulating action of the second electro-proportional valve db2 adjusts the pressurized air output from the air source u to a pressure value suitable for the front chamber of the buffer cylinder q in real time. Then, the pressurized air at the suitable pressure value reaches the normally closed directional valve CB. The normally closed direction of the normally closed directional valve CB is from the buffer cylinder q to the second electro-proportional valve db2. To allow pressurized air to flow from the second electro-proportional valve db2 to the buffer cylinder q, the valve direction of the normally closed directional valve CB can be adjusted to achieve the flow of pressurized air. After adjusting the valve direction of the normally closed directional valve CB, the pressurized air will pass through the normally closed directional valve CB and reach the one-way throttle valve j. The one-way throttle valve j is set to one-way throttling when the air flows from the normally closed directional valve CB to the buffer cylinder q, and one-way normally open when the air flows from the buffer cylinder q to the normally closed directional valve CB.

[0024] According to one aspect of a specific embodiment of the present invention, a control and adjustment device kk is further provided, which can control the normally open reversing valve ck, the first electro-proportional valve db1, the one-way throttle valve j, the second electro-proportional valve db2 and the normally closed reversing valve CB in a coordinated manner, so as to realize the precise adjustment of the pressure in the rear chamber of the buffer cylinder q by the first air passage q1, and the supply of air to the front chamber of the buffer cylinder q by the second air passage q2, thereby realizing the dynamic adaptation of air pressure.

[0025] Figure 1 This is a schematic diagram of the basic structure of the overall layout of each component in an embodiment of the present invention.

[0026] Figure 2 This is a schematic diagram of material w impacting impact disk p in an embodiment of the present invention.

[0027] Figure 3 This is a schematic diagram of the retraction action of the buffer cylinder q in an embodiment of the present invention.

[0028] like Figure 1 , Figure 2 and Figure 3 As shown, according to one aspect of a specific embodiment of the present invention, the specific working process is as follows: First, the control and adjustment device kk controls the first electro-proportional valve db1 to precisely adjust the air pressure entering the rear chamber of the buffer cylinder q so that it matches the buffering effect required by the production line. Then, the material w is conveyed by the conveying device and crashes into the impact plate p at high speed. Then, the buffer cylinder q generates rebound compression to complete the buffering of the material w. At the same time, the control and adjustment device kk controls the second electro-proportional valve db2 to precisely adjust the air pressure entering the front chamber of the buffer cylinder q so that the pressure in the rear chamber of the buffer cylinder q is equal to the pressure in the front chamber of the buffer cylinder q plus the pressure generated by the material w crashing into the impact plate p. This balances the pressure at both ends of the piston rod in the buffer cylinder q. The control and adjustment device kk performs real-time adjustment to achieve the technical effect of no rebound after buffering by the buffer cylinder q.

[0029] It should be understood that the description of specific embodiments of the present invention in the specification is exemplary and should not be construed as an undue limitation on the scope of protection of the present invention. The scope of protection of the present invention is defined by its claims and covers all embodiments falling within its scope and their obvious equivalents.

Claims

1. An adaptive pneumatic buffer device for providing non-rebound impact buffering for moving material (w) in a production line, comprising a buffer cylinder (q), and an impact disc (p) at the end of the piston rod of the buffer cylinder (q), wherein the moving material (w) can cause the buffer cylinder (q) to rebound and compress after impacting the impact disc (p), thereby achieving buffering of the material (w), characterized in that... A pressure balancing system (y) is also provided, which has a first air passage (q1) and a second air passage (q2). The first air passage (q1) and the second air passage (q2) are connected to the air source (u) through a three-way connector. The first air passage (q1) and the second air passage (q2) are both connected to the buffer cylinder (q) and are respectively distributed on both sides of the piston in the buffer cylinder (q). When the impact plate (p) is impacted by the material (w), the piston rod can achieve impact retraction without rebound under the coordination and adjustment of the first air passage (q1) and the second air passage (q2).

2. The adaptive pneumatic buffer device according to claim 1, characterized in that... The first air passage (q1) is connected to the rear chamber of the buffer cylinder (q), and a normally open reversing valve (ck) and a first electro-proportional valve (db1) are connected in series in the first air passage (q1). The first electro-proportional valve (db1) can be used to adjust the pressure value of the rear chamber of the buffer cylinder (q).

3. The adaptive pneumatic buffer device according to claim 2, characterized in that... The second air passage (q2) is interconnected with the front chamber of the buffer cylinder (q), and a one-way throttle valve (j), a second electro-proportional valve (db2) and a normally closed directional valve (cb) are connected in series in the second air passage (q2). The one-way throttle valve (j) achieves flow throttling and maintains stable control of the initial air pressure in the front chamber, and the normally closed directional valve (cb) performs air passage switching and pressure stabilization.

4. The adaptive pneumatic buffer device according to claim 3, characterized in that... It is also equipped with a control and adjustment device (kk), which can control the normally open reversing valve (ck), the first electro-proportional valve (db1), the one-way throttle valve (j), the second electro-proportional valve (db2) and the normally closed reversing valve (cb) in a coordinated manner, so as to realize the precise adjustment of the pressure in the rear chamber of the buffer cylinder (q) by the first air path (q1) and the supply of air to the front chamber of the buffer cylinder (q) by the second air path (q2), thereby realizing the dynamic adaptation of air pressure.

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