CN215672954U - Pressure maintaining head and pneumatic pressure maintaining machine - Google Patents
Pressure maintaining head and pneumatic pressure maintaining machine Download PDFInfo
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- CN215672954U CN215672954U CN202120822778.6U CN202120822778U CN215672954U CN 215672954 U CN215672954 U CN 215672954U CN 202120822778 U CN202120822778 U CN 202120822778U CN 215672954 U CN215672954 U CN 215672954U
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Abstract
The utility model discloses a pressure maintaining head and a pneumatic pressure maintaining machine, and belongs to the technical field of pressure maintaining equipment. The pressure maintaining head comprises a pressure maintaining cylinder and an active pressure rod, an air cavity is arranged in the pressure maintaining cylinder, one end of the pressure maintaining cylinder is provided with an opening communicated with the air cavity, and the other end of the pressure maintaining cylinder is provided with a pressure output part; the active pressure lever comprises a separation part and a pressure lever part connected with the separation part, the separation part is connected in the air cavity in a sealing and sliding mode, the pressure lever part penetrates out of the pressure maintaining cylinder through an opening, the separation part separates the air cavity to form an adjusting cavity and a compression cavity, the pressure lever part is located in the adjusting cavity, and the separation part can adjust the pressure maintaining force of the pressure maintaining cylinder by adjusting the size of the compression cavity in an initial state. The pneumatic pressure maintaining machine comprises the pressure maintaining head. The pressure maintaining head and the pneumatic pressure maintaining machine have stable pressure maintaining effect and high reliability, and further improve the accuracy of control stroke and pressure of the pneumatic pressure maintaining machine.
Description
Technical Field
The utility model relates to the technical field of pressure maintaining equipment, in particular to a pressure maintaining head and a pneumatic pressure maintaining machine.
Background
At present, the pneumatic pressure maintaining machine cannot accurately control stroke and pressure at the same time, and can only control the stroke and the pressure through a pressure maintaining head. In the prior art, as shown in fig. 1, the pressure maintaining head includes a power pressure cylinder 1 ', a power spring 2 ' and a driven pressure lever 3 ', when the power pressure cylinder 1 ' moves toward the driven pressure lever 3 ', the power spring 2 ' is compressed, the elastic force of the compressed power spring 2 ' is the pressure maintaining force of the driven pressure lever 3 ', the magnitude of the pressure maintaining force is controlled by the power spring 2 ', and the pressure maintaining force controls the pressure maintaining force while controlling the stroke. However, due to the fatigue property of the spring itself, the spring force is weakened with the increase of the number of uses, so that the pressure maintaining effect is not ideal.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a pressure maintaining head which is stable in pressure maintaining effect and high in reliability.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a pressure maintaining head comprising:
the pressure maintaining cylinder is internally provided with an air cavity, one end of the pressure maintaining cylinder is provided with an opening communicated with the air cavity, and the other end of the pressure maintaining cylinder is provided with a pressure output part;
the active pressure lever comprises a separating part and a pressure lever part connected with the separating part, the separating part is connected in the air cavity in a sealing and sliding mode, the pressure lever part penetrates out of the pressure maintaining cylinder through the opening, the separating part separates the air cavity to form an adjusting cavity and a compression cavity, the pressure lever part is located in the adjusting cavity, and the separating part can adjust the pressure maintaining force of the pressure maintaining cylinder by adjusting the size of the compression cavity in an initial state.
Optionally, the compression device further comprises a pressure regulating member connected to the pressure maintaining cylinder, the position of the pressure regulating member in the pressure regulating cavity is adjustable, and when the partition part abuts against the pressure regulating member, the compression cavity is in the initial state.
Optionally, the pressure regulating part is cylindrical, the pressure regulating part is connected to the opening, and the pressure rod part is movably arranged in the pressure regulating part in a penetrating mode.
Optionally, the pressure regulating member is provided with a scale mark for marking the depth of the pressure regulating member extending into the regulating cavity.
Optionally, the pressure regulating part includes a screwing part and an abutting part which are connected with each other, the screwing part is screwed in the opening, the abutting part is located in the regulating cavity, and the partition part abuts against the abutting part, so that the compression cavity is in the initial state.
Optionally, the pressure regulating member further includes an operating portion connected to an end of the screw portion facing away from the abutting portion.
Optionally, an outer wall of the pressure lever portion is spaced apart from an inner wall of the pressure regulating member.
Optionally, a pressure regulating valve is installed on the pressure maintaining cylinder, and the preset air pressure in the compression cavity can be regulated through the pressure regulating valve.
Optionally, a sealing ring is sleeved on the circumferential direction of the partition part, and the sealing ring is in sliding connection with the air cavity.
Another object of the present invention is to provide a pneumatic pressure maintenance machine that improves the accuracy of controlling stroke and pressure.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a pneumatic pressure maintaining machine comprises the pressure maintaining head.
The utility model has the beneficial effects that:
when the pressure maintaining head works, the pressure rod part applies driving force to the partition part, so that the partition part slides towards the compression cavity to reduce the volume of the compression cavity in an initial state and increase the pressure in the compression cavity, and the gas pressure on the bottom wall of the gas cavity is the pressure maintaining pressure generated by the pressure maintaining cylinder; when the driving force applied to the partition portion is stopped, the partition portion is reset to the initial position because the pressure in the compression chamber is greater than the pressure in the regulation chamber; when the pressure maintaining is needed next time, the driving force is continuously applied to the separating part through the pressing rod part, and the steps are repeated. Through adjusting compression cavity volume and gas pressure to control pressurize pressure, simple structure is reliable, can not influence pressurize pressure size along with the increase of use number of times, and the pressurize effect is stable, and the reliability is high.
According to the pneumatic pressure maintaining machine, the accuracy of stroke and pressure control is improved by adopting the pressure maintaining head.
Drawings
FIG. 1 is a cross-sectional view of a prior art indenter;
FIG. 2 is a schematic diagram of a configuration of a pressure retention head provided by an embodiment of the present invention;
figure 3 is a cross-sectional view of a pressure retention head provided by an embodiment of the present invention.
In the figure:
1', a power pressing cylinder; 2', a power spring; 3', a driven pressure lever;
1. a pressure maintaining cylinder; 111. a compression chamber; 112. an adjustment chamber; 12. a pressure output section;
2. an active compression bar; 21. a partition portion; 22. pressing the rod part;
3. adjusting a pressing piece; 31. an abutting portion.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The embodiment provides a pressure maintaining head, which comprises a pressure maintaining cylinder 1 and an active pressure rod 2, wherein specifically, an air cavity is arranged in the pressure maintaining cylinder 1, one end of the pressure maintaining cylinder 1 is provided with an opening communicated with the air cavity, and the other end of the pressure maintaining cylinder 1 is provided with a pressure output part 12; the active pressure lever 2 comprises a partition part 21 and a pressure lever part 22 connected with the partition part 21, the partition part 21 is connected in an air cavity in a sealing and sliding mode, the pressure lever part 22 penetrates out of the pressure maintaining cylinder 1 through an opening, the partition part 21 partitions the air cavity to form an adjusting cavity 112 and a compression cavity 111, the pressure lever part 22 is located in the adjusting cavity 112, and the partition part 21 can adjust the pressure maintaining force of the pressure maintaining cylinder 1 by adjusting the size of the compression cavity 111 in an initial state.
According to an ideal gas state equation: PV ═ nRT, where P is gas pressure, V is gas volume, n is amount of gas species, R is a constant, and T is temperature; it can be seen that when other conditions are unchanged, the gas pressure is inversely proportional to the gas volume; the compression chamber 111 has an initial volume, and the volume of the compression chamber 111 is adjusted by the partition 21, and the pressure in the compression chamber 111 increases when the gas in the compression chamber 111 is compressed. According to the pressure formula: f ═ PS, where F is pressure, P is gas pressure, and S is area; it can be known that when the area is constant, the pressure is in direct proportion to the gas pressure; the bottom area of the compression cavity 111 is constant, and when the pressure intensity is increased, an increasing output pressure, namely the holding pressure of the holding pressure head, is continuously generated on the holding pressure cylinder 1.
When the compressor works, the pressure rod part 22 applies driving force to the partition part 21, so that the partition part 21 slides towards the compression cavity 111 to reduce the volume of the compression cavity 111 in an initial state, the pressure in the compression cavity 111 is increased, the gas pressure on the bottom wall of the gas cavity is the holding pressure generated by the pressure holding cylinder 1, the volume of the compression cavity 111 is continuously reduced, and the holding pressure is continuously increased; when the application of the driving force to the partition 21 is stopped, the partition 21 is returned to the initial position since the pressure in the compression chamber 111 is greater than the pressure in the regulation chamber 112; when the pressure maintaining is needed next time, the driving force is continuously applied to the partition part 21 through the pressing rod part 22, and the above steps are repeated. Through the volume and the gas pressure intensity of adjusting compression chamber 111 to control pressurize pressure, simple structure is reliable, can not influence pressurize pressure size along with the increase of use number of times, and the pressurize effect is stable, and the reliability is high.
Optionally, a sealing ring is sleeved on the circumferential direction of the partition 21, and the sealing ring is slidably connected with the air cavity to improve the sealing performance of the compression cavity 111.
Generally, the partition 21 is set at an initial position, so that the initial volume of the compression chamber 111 is a fixed value, a preset air pressure is set in the compression chamber 111, and the pressure in the adjustment chamber 112 is an atmospheric pressure; when the driving force applied to the partition 21 is greater than the preset air pressure, the partition 21 slides toward the compression cavity 111, and when the driving force applied to the partition 21 is not greater than the preset air pressure, the partition 21 returns to the initial position under the action of the air pressure difference between the compression cavity 111 and the adjustment cavity 112, so that the compression cavity 111 returns to the initial volume. Optionally, the pressure-maintaining cylinder 1 is provided with a pressure-regulating valve, through which a preset air pressure in the compression chamber 111 can be regulated, specifically, the pressure-regulating valve may be installed on a side wall or a bottom wall of the compression chamber 111, specifically, the pressure-regulating valve may be a one-way valve, through which gas is injected into the compression chamber, and the gas in the compression chamber 111 can be prevented from leaking outwards, thereby improving reliability.
Specifically, the size of the initial volume of the compression cavity 111 depends on the initial position of the partition 21 in the air cavity, and the size of the compression cavity 111 in the initial state is the minimum value of the holding pressure head; when different minimum values of the holding pressure are required, the size of the compression cavity 111 in the initial state can be adjusted; optionally, the pressure maintaining head further comprises a pressure regulating member 3 connected to the pressure maintaining cylinder 1, the partition portion 21 is at an initial position when abutting against the pressure regulating member 3, so that the compression cavity 111 is in an initial state, the initial state of the compression cavity 111 is set through the pressure regulating member 3, the initial state of the compression cavity 111 is stable, and the minimum value of the pressure maintaining force is always in a stable state; specifically, the position of the pressure regulating member 3 in the regulating cavity 112 is adjustable, and the pressure maintaining force adjusting range can be adjusted by adjusting the position of the pressure regulating member 3, so that the operation is simple, the requirement on pressure maintaining force during different productions can be met, and the applicability of the pressure maintaining head is improved, wherein the partition part 21 is abutted to the maximum volume of the compression cavity 111 when the pressure regulating member 3 is abutted.
Optionally, the pressure regulating member 3 is cylindrical, the pressure regulating member 3 is connected to the opening, the pressure lever part 22 is movably arranged in the pressure regulating member 3 in a penetrating manner, and the pressure regulating member 3 and the pressure lever part 22 are compact in structure, convenient to install and convenient to regulate; specifically, the pressure lever portion 22 protrudes from the pressure regulating member 3 so as to be connected to an external driving mechanism. Optionally, the pressure regulating member 3 is provided with a scale mark for marking the depth of the pressure regulating member extending into the regulating cavity 112, so that the pressure regulating member 3 can be accurately adjusted when different sizes of the initial compression cavity 111 are required, and the accuracy of the size of the initial compression cavity 111 can be further improved.
Specifically, the pressure regulating member 3 includes a screw part and an abutting part 31 which are connected with each other, the screw part is screwed to the opening, the abutting part 31 is located in the regulating cavity 112, and when the partition part 21 abuts against the abutting part 31, the compression cavity 111 is in an initial state; specifically, the pressure regulating member 3 is in a straight cylinder shape, the screw connection part is arranged on the periphery of the straight cylinder structure of the pressure regulating member 3, and the abutting part 31 is arranged at the end part of the straight structure; specifically, the abutting portion 31 is disposed along the outer periphery of the straight-tube structure, in this embodiment, the abutting portion 31 is a circular ring extending along the outer periphery of the straight-tube structure in the radial direction, and the outer diameter dimension thereof is smaller than the inner diameter dimension of the adjusting cavity 112; optionally, the pressure regulating member 3 further includes an operating portion, the operating portion is connected to one end of the screw portion away from the abutting portion 31, and the depth of the pressure regulating member 3 extending into the adjusting cavity 112 is adjusted by screwing the operating portion, so that the operation is facilitated; specifically, the operation portion may be a nut, or may be a structure integrally molded with the straight tubular structure, and is not limited.
Optionally, the outer wall of the pressure lever part 22 and the inner wall of the pressure regulating part 3 are arranged at an interval so that the pressure lever part 22 can move along the length direction of the lever, and further optionally, a guide part is arranged between the pressure lever part 22 and the pressure regulating part 3, so that the pressure lever part 22 can slide along the guide part, and the structural stability is improved, specifically, a boss is arranged on the outer wall of the pressure lever part 22 along the length direction thereof, and a groove in sliding fit with the boss is formed on the inner wall of the pressure regulating part 3, so that the pressure lever part 22 can slide along the length direction and the pressure regulating part 3; specifically, the circumference of the pressure lever portion 22 is provided with scale marks indicating the depth of the pressure lever portion extending into the adjusting cavity 112 along the lever length direction, and the length of the pressure lever portion 22 extending into the adjusting cavity 112 is convenient for knowing the position of the partition portion 21 and the real-time volume of the compression cavity 111 in real time, so as to obtain the pressure maintaining value of the pressure maintaining head.
The embodiment also provides a pneumatic pressure maintaining machine, which comprises the pressure maintaining head, the volume and the gas pressure of the compression cavity 111 are adjusted to control the pressure maintaining pressure, the structure is simple and reliable, the pressure maintaining pressure cannot be influenced along with the increase of the using times, the pressure maintaining effect is stable, the reliability is high, and the accuracy of the control stroke and the pressure is improved.
The pressure maintaining head and the pneumatic pressure maintaining machine in the embodiment can be applied to the production of various precise electronic products, and can play a great role when pressure maintaining is required in the manufacturing process.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A pressure holding head, characterized by comprising:
the pressure maintaining device comprises a pressure maintaining cylinder (1), wherein an air cavity is arranged in the pressure maintaining cylinder (1), one end of the pressure maintaining cylinder (1) is provided with an opening communicated with the air cavity, and the other end of the pressure maintaining cylinder is provided with a pressure output part (12);
active depression bar (2), its including partition portion (21) and with the depression bar portion (22) that partition portion (21) are connected, partition portion (21) sealed sliding connection in the air cavity, depression bar portion (22) pass through the opening is worn out keep pressure section of thick bamboo (1), partition portion (21) will the air cavity is separated and is formed regulation chamber (112) and compression chamber (111), depression bar portion (22) are located adjust chamber (112) in, partition portion (21) can be through adjusting under the initial condition the size of compression chamber (111) in order to adjust the pressurize power of keeping pressure section of thick bamboo (1).
2. Pressure head according to claim 1, characterized in that it further comprises a pressure regulating member (3) connected to the pressure holding cylinder (1), the position of the pressure regulating member (3) being adjustable within the adjustment chamber (112), the compression chamber (111) being in the initial state when the partition (21) abuts against the pressure regulating member (3).
3. The pressure maintaining head as claimed in claim 2, characterized in that the pressure regulating member (3) is cylindrical, the pressure regulating member (3) is connected to the opening, and the rod pressing portion (22) is movably inserted into the pressure regulating member (3).
4. The head according to claim 3, characterized in that said pressure-regulating member (3) is provided with graduated markings indicating the depth to which it extends into said regulating cavity (112).
5. A head according to claim 3, characterized in that said pressure regulating member (3) comprises a threaded portion and an abutment portion (31) connected to each other, said threaded portion being threaded to said opening, said abutment portion (31) being located inside said regulation chamber (112), said compression chamber (111) being in said initial condition when said partition portion (21) abuts against said abutment portion (31).
6. Pressure head according to claim 5, characterized in that the pressure regulating member (3) further comprises an operating portion connected to an end of the screw portion facing away from the abutment portion (31).
7. A head according to claim 3, characterized in that the outer wall of the presser bar portion (22) is spaced from the inner wall of the pressure regulating member (3).
8. Pressure maintaining head according to any of claims 1-7, characterized in that a pressure regulating valve is mounted on the pressure maintaining cylinder (1), by means of which a preset air pressure in the compression chamber (111) can be adjusted.
9. The packing head according to any one of claims 1 to 7, characterized in that the partition (21) is circumferentially sleeved with a sealing ring, which is in sliding connection with the air cavity.
10. A pneumatic holding press comprising a holding head according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120822778.6U CN215672954U (en) | 2021-04-21 | 2021-04-21 | Pressure maintaining head and pneumatic pressure maintaining machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120822778.6U CN215672954U (en) | 2021-04-21 | 2021-04-21 | Pressure maintaining head and pneumatic pressure maintaining machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215672954U true CN215672954U (en) | 2022-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120822778.6U Active CN215672954U (en) | 2021-04-21 | 2021-04-21 | Pressure maintaining head and pneumatic pressure maintaining machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215672954U (en) |
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2021
- 2021-04-21 CN CN202120822778.6U patent/CN215672954U/en active Active
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