Two-stage speed controller

Abstract

The invention relates to a two-section type speed controller which comprises a body, a first port, a second port, a main channel and an auxiliary channel, the main channel and the auxiliary channel are communicated with each other, fluid flows to a pressure storage chamber only in a one-way mode through the auxiliary channel, a sliding shaft base is embedded in the second port, and one end of a sliding shaft assembly is matched with the sliding shaft base to form a valve. The pressure storage chamber is communicated with a main throttling hole channel, the sliding shaft assembly is transversely provided with an auxiliary throttling hole channel, when fluid enters and exhausts air, linkage of all the channels and valves is matched, the pressure of the fluid is controlled through the elasticity of an adjusting assembly, and therefore the displacement speed of an air cylinder connected with the body is controlled. Therefore, the purpose of buffering during exhausting of the second port is achieved. According to the invention, the structure complexity of related commercial commodities can be simplified, the purpose of control can be achieved by more intuitively adjusting the elastic force to cooperate with the internal pressure of the pressure storage chamber, the set condition limitation can be greatly reduced, and the device is suitable for different cylinders of different families.

Description

Technical Field

[0001] The present invention relates to a speed controller, in particular to a two-stage speed controller. Background Art

[0002] In general related automated production operations, the application of pneumatic cylinders is a very common equipment, but pneumatic cylinders usually need to perform reciprocating movements for a long time, so there are many auxiliary products on the market that are designed and applied for buffered pneumatic cylinders to reduce the working temperature surge caused by the aforementioned movements and the impact damage to the structure caused by the lack of buffering.

[0003] For example, regarding the patent content of Taiwan Patent I783287, a time delay and flow controller, it can be understood that the flow controller disclosed in the content needs to be matched with a specific model of pneumatic cylinder to ensure the internal environmental conditions of the pneumatic cylinder, and can only play the best performance under specific parameters and environment. It mainly switches the guiding fluid to cooperate with the corresponding compensation mechanism to guide the divergent fluid to the relative flow path of the compensation mechanism to perform needle valve exhaust to achieve the purpose of buffering. However, if you want to achieve the relevant flow adjustment, you need to spend a lot of equipment purchase costs, and because the design of the flow controller is complicated, the subsequent calibration needs to be more precise, and it cannot be used for the same model configuration. It can only be applied to the currently connected pneumatic cylinder, which makes the entire assembly quite difficult.

[0004] Please refer to Taiwan Patent No. 1604132 for the speed controller. Through the relevant disclosure in the specification, it can be seen that many flow paths are arranged inside the structure of this speed controller to process the relevant fluid by partitioning means, and then high-speed and low-speed switching is provided through needle valve exhaust, so that the buffer function has a good effect, but this also makes the internal structure more complicated and the entire volume increases a lot.

[0005] Therefore, although there are many improvements in the previous patents, the structural technology has many limitations on usage conditions and the assembly cost is not low, so the inventor continues to research and make improvements. Summary of the invention

[0006] The main purpose of the present invention is to provide a two-stage speed controller, wherein the body is provided with a first port and a second port for fluid circulation, the body is also provided with a slide shaft assembly and an adjustment assembly, and a plurality of channels (a main channel, a secondary channel, a balance channel, a main throttle hole channel, and a secondary throttle hole channel), the secondary channel only allows one-way flow to the pressure storage chamber, the slide shaft assembly is formed by a main shaft member having an elastic element and a secondary shaft member sequentially penetrated at one end, and then sleeved on the inner wall of the body, a balance channel is formed between the main shaft member and the secondary shaft member, the other end of the main shaft member is provided with an adjustment assembly composed of a knob connector and an adjustment knob, and the second port is embedded with a slide shaft base, and the secondary shaft member cooperates with the slide shaft base to form a valve;

[0007] The pressure storage chamber is connected to the main throttle hole channel, and the secondary shaft is transversely provided with a secondary throttle hole channel. When the fluid flows through the first port in coordination with the closed state of the valve, the fluid passes through the main channel, the balance channel, the secondary channel, the main throttle hole channel and the secondary throttle hole channel, and flows to the outside in coordination with the second port, driving the slide shaft assembly to start moving upward to open the valve. When the fluid continues to circulate through the valve in coordination with the secondary throttle hole channel, the slide shaft assembly continues to open the valve upward, so that the cylinder connected to the body can be driven to move forward at two speeds of initial acceleration and high speed; when the cylinder is in the return stroke and the valve is quickly exhausted from the open state, the fluid flows through all the aforementioned channels in coordination to the first port, and the slide shaft assembly gradually moves downward to close the valve, and then cooperates with the main throttle hole channel and the secondary throttle hole channel to allow the slide shaft assembly to move downward to completely close the valve and adjust it to a slow speed, so that the impact of the cylinder return operation can be buffered and the cylinder temperature will not soar.

[0008] A second purpose of the present invention is that when the adjusting assembly is in a fast exhaust state for the main body, the adjusting knob cooperates with the knob connecting piece to allow the elastic force of the elastic element to adjust the limiting position of the closing valve of the sliding shaft assembly so that the internal buffer position of the cylinder connected to the main body can be adjusted.

[0009] The second purpose of the present invention is that a throttling cylinder is also arranged inside the main throttling hole channel, and the cross-sectional area of ​​the main throttling hole channel minus the cross-sectional area of ​​the throttling cylinder is between 1% and 7% of the area of ​​the main throttling hole channel. The throttling cylinder with different cross-sectional areas can affect the pressure drop in the pressure storage chamber to close the valve, thereby affecting the buffer position of the cylinder.

[0010] The third object of the present invention is that the ratio of the valve area to the balance channel area is between 1:1 and 1:4, which can prevent the sliding shaft assembly from being pushed back and causing the valve (50) to open.

[0011] According to the fourth purpose of the present invention, the diameter of the secondary throttle hole channel is between 0.2 and 0.4 mm, and the application of different diameters enables the channel exhaust volume to produce a slow motion on the cylinder exhaust.

[0012] The present invention can perform multi-stage speed control on the action speed of the pneumatic cylinder through the flow path and structural design in the two-stage speed controller, so that the control operation of the regulating component can be more intuitive.

[0013] Therefore, the present invention can not only simplify the structural complexity of related commercial products, but also more intuitively achieve the control purpose by adjusting the elastic force to match the internal pressure of the pressure storage chamber, and can also greatly reduce the restrictions on the setting conditions and be suitable for different cylinders of various manufacturers. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a stereogram of the present invention.

[0015] Figure 2 It is an assembly diagram of the present invention.

[0016] Figure 3 It is a schematic diagram of the main body of the present invention in a ready state.

[0017] Figure 4 The present invention is based on Figure 3 Control loop diagram.

[0018] Figure 5 It is a schematic diagram of the main body of the present invention in the initial acceleration state of intake.

[0019] Figure 6 The present invention is based on Figure 5 Control loop diagram.

[0020] Figure 7 It is a schematic diagram of the main body of the present invention in a high-speed air intake state.

[0021] Figure 8 The present invention is based on Figure 7 Control loop diagram.

[0022] Fig. 9 It is a schematic diagram of the main body of the present invention in a fast exhaust high-speed state.

[0023] Fig.10 The present invention is based on Fig. 9 Control loop diagram.

[0024] Fig.11 It is a schematic diagram of the main body of the present invention in a fast exhaust slow speed state.

[0025] Fig.12 The present invention is based on Fig.11 Control loop diagram.

[0026] The following are marked in the figure:

[0027] 10...Ontology

[0028] 11...Main channel

[0029] 12...Main throttle channel

[0030] 121...Throttling cylinder

[0031] 13...Pressure storage chamber

[0032] 14...Sliding shaft base

[0033] 15...First Port

[0034] 16...Second Port

[0035] 20...Slide shaft assembly

[0036] 21...Spindle parts

[0037] 22...Elastic element

[0038] 23...Secondary shaft

[0039] 231...Auxiliary throttle channel

[0040] 24...Balanced channels

[0041] 30...Adjustment components

[0042] 31...Knob connector

[0043] 32...Adjustment knob

[0044] 40...Secondary channel

[0045] 50...Valve

[0046] A...Fluid DETAILED DESCRIPTION

[0047] Generally, according to the best feasible embodiment of the present invention, and with the accompanying drawings, Figure 1 to Figure 4 After the detailed description of the figure, the understanding of the present invention is increased. The present invention is a two-stage speed controller, which has: a body 10, provided with a first port 15 and a second port 16 connected to each other, and a main channel 11 and a secondary channel 40 for a fluid A to flow, the secondary channel 41 only allows one-way flow to a pressure storage chamber 13, the main channel 11 flows into the body 10 from the first port 15 and the second port 16, and the second port 16 is embedded with a sliding shaft base 14.

[0048] A slide shaft assembly 20 mainly comprises: a main shaft member 21, one end of which is penetrated by an elastic element 22 and a secondary shaft member 23 in sequence, and then sleeved on the inner wall of the main body 10, a balance channel 24 is formed between the main shaft member 21 and the secondary shaft member 23, and an adjustment component 30 is provided at the other end of the main shaft member 21. The adjustment component 30 is composed of a knob connector 31 and an adjustment knob 32. One end of the slide shaft assembly 20 cooperates with the slide shaft base 14 to form a valve 50.

[0049] Please see again Figures 5 to 8The pressure storage chamber 13 is connected to a main throttle hole channel 12, and the secondary shaft 23 is transversely provided with a secondary throttle hole channel 231. When the fluid A flows through the first port 15 to cooperate with the closed state of the valve 50, the fluid A flows through the main channel 11, the balance channel 24, the secondary channel 40, the main throttle hole channel 12 and the secondary throttle hole channel 231, and flows to the outside in cooperation with the second port 16. The internal fluid A pressure of the pressure storage chamber 13 drives the slide shaft assembly 20 to start moving upward to open the valve 50. When the fluid A continues to circulate through the valve 50 in cooperation with the secondary throttle hole channel 231, the slide shaft assembly 20 can continue to open the valve 50 upward, so that the cylinder connected to the body 10 can be driven to move forward at the initial acceleration and high speed stages.

[0050] Please see again Figures 9 to 12 When the valve 50 is in a fast exhaust state from an intake state, the fluid A is coordinated and circulated to the first port 15 through all the aforementioned channels (the main channel 11, the balance channel 24, the secondary channel 40, the main throttle hole channel 12 and the secondary throttle hole channel), so that the pressure of the internal fluid A of the pressure storage chamber 13 decreases, and the slide shaft assembly 20 gradually moves downward to close the valve 50. Further coordination with the main throttle hole channel 12 and the secondary throttle hole channel 231 allows the valve 50 to be adjusted to be completely closed, so that the impact of the reciprocating operation of the cylinder can be buffered. At this time, the area of ​​the valve 50 is relative to the area of ​​the balance channel 24. The ratio is between 1:1 and 1:4, mainly to prevent the slide shaft assembly 20 from being pushed back and causing the valve 50 to open.

[0051] When the adjusting assembly 30 is in the fast exhaust state for the main body 10, the elastic force of the elastic element 22 can adjust the limit position of the closing valve 50 of the sliding shaft assembly 20 through the adjusting knob 32 cooperating with the knob connector 31, so that the internal buffer position of the cylinder connected to the main body 10 can be adjusted.

[0052] A throttling cylinder 121 is further disposed inside the aforementioned main throttling hole channel 12. The cross-sectional area of ​​the main throttling hole channel 12 minus the cross-sectional area of ​​the throttling cylinder 121 is between 1% and 7% of the area of ​​the main throttling hole channel 12. The throttling cylinder 121 with different cross-sectional areas can affect the pressure drop in the pressure storage chamber 13 and allow the sliding shaft assembly 20 to close the valve 50, thereby affecting the buffer position of the cylinder.

[0053] The diameter of the aforementioned secondary throttle hole channel 231 is between 0.2 and 0.4 mm. The application of different diameters enables the exhaust volume of the channel to produce a slow motion of the cylinder exhaust.

[0054] In summary, the two-stage speed controller of the present invention utilizes the elastic force of the elastic element 22 of the sliding shaft assembly 20 to cope with the air pressure of the fluid A. Specifically, the adjusting knob 32 is intuitively controlled to adjust the elastic force of the adjusting knob 32, thereby controlling the pressure of the fluid A in the pressure storage chamber 13, so that the cylinder connected to the main body 10 has a two-stage speed buffering effect during operation, and through the setting of the main throttle hole channel 12 and the auxiliary throttle hole channel 231, the pressure drop of the pressure storage chamber 13 is affected. Through further adjustment, the buffering position and buffering rate of the cylinder connected to the main body 10 can be adjusted, so that the buffering of the impact force suffered by the cylinder operation is more effective.

Claims

1. A two-stage speed controller, comprising: A body (10) is provided with a first port (15) and a second port (16) which are connected to each other, and a main channel (11) and a secondary channel (40) for a fluid (A) to flow through. The main channel (11) allows fluid to flow into the body (10) from the first port (15) and the second port (16). The secondary channel (40) only allows one-way flow to a pressure storage chamber (13). The second port (16) is embedded with a sliding shaft base (14); A slide shaft assembly (20) mainly comprises: a main shaft (21) having an elastic element (22) and a secondary shaft (23) inserted in sequence at one end thereof, and then sleeved on the inner wall of the main body (10); a balance channel (24) is formed between the main shaft (21) and the secondary shaft (23); an adjustment assembly (30) is arranged at the other end of the main shaft (21); the adjustment assembly (30) is composed of a knob connector (31) and an adjustment knob (32) connected together; one end of the slide shaft assembly (20) cooperates with the slide shaft base (14) to form a valve (50), and is characterized in that: The pressure storage chamber (13) is connected to a main throttle hole channel (12), and the secondary shaft member (23) is transversely provided with a secondary throttle hole channel (231). When the fluid (A) flows through the first port (15) to cooperate with the valve (50) in a closed state, the fluid (A) flows through the main channel (11), the balance channel (24), the secondary channel (40), the main throttle hole channel (12) and the secondary throttle hole channel (231), and flows to the outside in cooperation with the second port (16), driving the sliding shaft assembly (20) to start moving upward to open the The valve (50) is a valve having a plurality of fluids (A) and a plurality of auxiliary throttle hole passages (231). When the fluid (A) continues to circulate through the valve (50) in cooperation with the auxiliary throttle hole passage (231), the slide shaft assembly (20) continues to open the valve (50) upward. When the valve (50) is quickly exhausted from the open state, the fluid (A) flows to the first port (15) through all the aforementioned passages in cooperation. The slide shaft assembly (20) gradually moves downward to close the valve (50), and then cooperates with the main throttle hole passage (231) and the auxiliary throttle hole passage (231) to adjust the valve (50) to be completely closed.

2. The two-stage speed controller according to claim 1, characterized in that: When the adjusting component (30) is in a fast exhaust state for the main body (10), the adjusting knob (32) cooperates with the knob connecting piece (31) to allow the elastic force of the elastic element (22) to adjust the limiting position of the closed valve (50) of the sliding shaft assembly (20).

3. The two-stage speed controller according to claim 1, characterized in that: The main throttle hole channel (12) further comprises: a throttle cylinder (121) disposed in the main throttle hole channel (12), wherein the cross-sectional area of ​​the main throttle hole channel (12) minus the cross-sectional area of ​​the throttle cylinder (121) is between 1% and 7% of the area of ​​the main throttle hole channel (12).

4. The two-stage speed controller according to claim 1, characterized in that: The ratio of the area of ​​the valve (50) to the area of ​​the balancing channel (24) is between 1:1 and 1:

4.

5. The two-stage speed controller according to claim 1, characterized in that: The cross-sectional area of ​​the secondary throttle hole channel (231) is between 0.2 and 0.4 mm.

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