Cylinder body structure capable of continuously discharging

Abstract

The utility model relates to the technical field of fluid extrusion / ejection, and particularly discloses a cylinder body structure capable of continuously discharging, which comprises a cylinder body, a piston connected with an external driver is arranged in the cylinder body, the piston divides the cylinder body into two separated cavities, each cavity is connected with a feeding channel and a discharging channel, and valves are mounted on the feeding channel and the discharging channel; the feeding ends of the two feeding channels are both communicated with an arranged feeding main flow channel, and the discharging ends of the two discharging channels are both communicated with an arranged discharging main flow channel. The scheme is used for solving the problem that an existing quantitative device cannot achieve continuous discharging.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid extrusion / spraying, in particular to a cylinder structure for continuous material discharge. Background Art

[0002] In the current industrial production process, quantitative feeding equipment plays a vital role, especially in application scenarios where precise control of fluid dosage is required. Most traditional quantitative equipment is based on the reciprocating working principle (the quantitative equipment includes a driver and a cylinder structure, the cylinder structure has a piston, and the driver drives the piston to move back and forth), that is, by sucking the fluid into the cylinder, and then using the reciprocating motion of the piston to squeeze out the fluid in the cylinder. This process involves the alternating expansion and contraction of the cylinder cavity to achieve the loading (also known as feeding or filling) and discharge (discharging) of the fluid. However, the inherent limitation of this mechanism is that its intermittent working mode cannot meet the demand for continuous and stable supply of fluid on continuous production lines. Especially in those high-end manufacturing and precision processing fields that have strict requirements on fluid output rate, such as precision glue coating, frequent pauses and starts not only affect production efficiency, but may also have an adverse effect on the quality of the final product. To address this problem, the current commonly used solution is to deploy two sets of quantitative equipment, coordinate their working cycles through a precise control system, and ensure that while one quantitative equipment is filling, the other equipment is discharging, so as to simulate the effect of continuous discharging.

[0003] Although this strategy solves the continuity problem to a certain extent, it is accompanied by a significant increase in costs, including the purchase and maintenance of additional equipment and the need for a higher power control system, which directly pushes up production costs. In addition, considering the integration trend of modern automated production lines, the dosing equipment needs to be integrated with the extrusion pipeline / spray gun / extrusion gun on the robot arm to achieve flexible and accurate material distribution. However, the dual dosing equipment undoubtedly increases the burden on the robot arm, limits its movement flexibility and operating range, and also puts higher requirements on the carrying capacity and structural design of the robot arm, further increasing the overall complexity and cost of the equipment. Utility Model Content

[0004] The utility model aims to provide a cylinder structure for continuous material discharging, so as to solve the problem that the existing quantitative equipment cannot realize continuous material discharging.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A cylinder structure for continuous discharge includes a cylinder, wherein a piston connected to an external drive is arranged in the cylinder, the piston divides the cylinder into two separate chambers, each chamber is connected to a feed channel and a discharge channel, and valves are installed on the feed channel and the discharge channel.

[0007] The principle and advantage of this scheme are: the cylinder is divided into two independent but cooperative chambers A and B by the piston. In the working cycle, when the piston moves to the side of chamber A, the valve on the discharge channel of chamber A opens, and at the same time, the valve on the feed channel of chamber B also opens. At this time, the fluid in chamber A is continuously output through the discharge channel under the push of the piston, and the external fluid enters chamber B through the feed channel. When the piston moves in the opposite direction (that is, when it moves to chamber B), the valve of the discharge channel of chamber A is closed and the valve of the feed channel is opened, and at the same time, the valve on the feed channel of chamber B is closed and the valve on the discharge channel is opened, and the fluid is also continuously output. In this way, the two chambers are alternately filled and discharged, ensuring that no matter what position the piston is in, there is always a chamber in the discharge state, thereby realizing continuous fluid supply.

[0008] This solution realizes seamless continuous discharging, fundamentally breaking the intermittent working mode of traditional quantitative equipment. Through the alternating operation of the dual chambers, continuous output of the fluid is achieved. Compared with the method of realizing continuous discharging with dual quantitative equipment, this solution reduces the procurement cost, operation and maintenance cost, and the cost of other cooperating robotic arms, which helps to achieve a comprehensive improvement in production efficiency, cost control and system flexibility.

[0009] Preferably, as an improvement, the feed ends of the two feed channels are both connected to the provided feed main channel, and the discharge ends of the two discharge channels are both connected to the provided discharge main channel, thereby realizing centralized management of raw material supply and fluid output.

[0010] Preferably, as an improvement, it further comprises a fixedly installed connecting block, the main feed channel and the main discharge channel are both arranged on the connecting block, and the main feed channel and the feed channel, the main discharge channel and the discharge channel are all T-shaped.

[0011] Preferably, as an improvement, it further includes a pressure sensor for monitoring the pressure of each chamber.

[0012] When the cylinder structure of the plate scheme is used for the metering cylinder, the metering cylinder has a working state and a non-working state. In the working state, the corresponding valves of the feed channel and the discharge channel will be opened or closed in sequence to ensure that there is always one chamber filling and the other chamber discharging; but in the non-working state, all valves are closed. If there is an abnormal control of the driver, the driver may still be started when all valves are closed, or the driver may be delayed in response due to its own damage, which will cause the driver to still drive the piston to move when all valves are closed, thereby greatly increasing the pressure in the compressed chamber; and the increase in the pressure in the single-side chamber, if the pressure is not released in time, will at least affect the life of the cylinder body, and at worst cause a cylinder explosion (for example, the cylinder body is connected by a cylinder barrel and upper and lower end covers through screws / bolts and other connectors. If the pressure is too high, it will exceed the strength range of the connector, and then cause the connector to break and cause a cylinder explosion).

[0013] In this solution, each chamber is connected to a pressure sensor for detecting chamber pressure. By connecting the pressure sensor to a controller, when the pressure in the corresponding side chamber increases, the controller controls the valve on the discharge channel of the chamber with increased pressure to open, and the chamber is depressurized in time, thereby ensuring safety and ensuring that the life of the metering cylinder is not affected.

[0014] In the working state, the pressure sensor corresponding to the chamber monitors the chamber pressure in real time. When the chamber is filled, the pressure sensor monitors the feed pressure. When the chamber is discharged, the pressure sensor can monitor the discharge pressure. In this way, one pressure sensor corresponds to each chamber to complete the feed and discharge pressure monitoring in the working state and the pressure monitoring in the non-working state, which greatly reduces the pressure monitoring cost and difficulty.

[0015] Preferably, as an improvement, a piston rod is inserted into the cylinder body, the piston is fixed on the piston rod, the piston includes a piston ring and a sealing ring mounted on the piston ring and facing oppositely, the piston ring is provided with a protrusion, and adjacent sealing rings are separated by the protrusion.

[0016] Beneficial effects: The opposite arrangement of the sealing rings and the setting of the piston ring effectively prevent cross contamination and leakage between chambers, enhance the sealing performance, and reduce material waste and equipment damage caused by poor sealing.

[0017] Preferably, as an improvement, the piston also includes a first clamping ring and a second clamping ring for clamping the sealing ring, the first clamping ring and the second clamping ring are located on both axial sides of the piston ring, and the first clamping ring and the second clamping ring are fixed on the piston rod to ensure the stable installation of the sealing ring.

[0018] Preferably, as an improvement, the first clamping ring and the second clamping ring are covered on the piston ring from both axial ends of the piston ring.

[0019] Beneficial effect: After the cylindrical piston ring with protrusions cooperates with the sealing ring and the clamping ring, multiple matching surfaces are formed on the outer circumference of the piston ring, so that when the materials on both sides of the piston want to be connected, they must pass through multiple matching surfaces to be connected, which greatly enhances the separation performance of the piston for the chambers on both sides.

[0020] Preferably, as an improvement, the second clamping ring includes a clamping block and an adjusting block with wedge-matched surfaces, and the piston rod is provided with two locating ring grooves along the axial direction, the first clamping ring is located in one locating ring groove, and the second clamping ring is located in the other locating ring groove, and the first clamping ring and the second clamping ring are both constructed of two half rings that are detachably connected.

[0021] Beneficial effects: This solution adopts a detachable two-piece half-ring structure and a clamping block and an adjusting block with wedge-matched surfaces, which not only simplifies the installation and adjustment process of the clamping ring, but also reduces the difficulty of processing the clamping ring through the wedge-matched surface. It also enables the clamping ring to cooperate with the positioning ring groove to achieve a stable installation of the piston on the piston rod, ensuring both the stability of the installation and the ease of disassembly and assembly.

[0022] Preferably, as an improvement, the piston rod is a double-acting piston rod, both ends of the double-acting piston rod pass through the cylinder body, and both ends of the double-acting piston rod have the same cross-sectional area.

[0023] Beneficial effects: This solution ensures that the cylinder discharge volume is the same under the same stroke when the piston moves in two directions, which not only improves the output accuracy, but also ensures the stability of the production process. It is particularly suitable for precision processing and production links that require strict control of flow.

[0024] Preferably, as an improvement, the double-acting piston rod is integral to enhance structural strength.

[0025] Preferably, as an improvement, the first clamping ring is integrally formed with the double-acting piston rod, and the second clamping ring is detachably connected to the double-acting piston rod.

[0026] Beneficial effects: The first clamping ring is integrated with the double-acting piston rod, combined with the detachable characteristics of the second clamping ring. On the one hand, the one-piece molding enhances the stability and durability of the structure; on the other hand, the detachable second clamping ring is easy to replace or maintain separately. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the three-dimensional structure of the first embodiment of the utility model.

[0028] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure after rotation angle.

[0029] Figure 3 for Figure 1 Longitudinal section view of .

[0030] Figure 4 for Figure 1 Front section view taken at the connection block location.

[0031] Figure 5 for Figure 1 Left section view taken at the connection block location.

[0032] Figure 6 for Figure 1 Cross-sectional view from above on the sealing end seat.

[0033] Figure 7 This is a simplified schematic diagram of the relationship between the cylinder body, valve and pressure sensor of the first embodiment of the present utility model.

[0034] Figure 8 This is a schematic diagram of the three-dimensional structure of the double-acting piston rod and the piston of the first embodiment of the utility model.

[0035] Fig. 9 for Figure 8 Longitudinal section view of .

[0036] Fig.10 for Figure 8 Cross-sectional view of .

[0037] Fig.11 This is a longitudinal sectional view of the double-acting piston rod and the piston in the second embodiment of the utility model.

[0038] Fig.12 This is a longitudinal sectional view of the second embodiment of the utility model on the cylinder body. DETAILED DESCRIPTION

[0039] The following is further described in detail through specific implementation methods:

[0040] The figure marks in the drawings of the specification include: cylinder body 10, sealing end seat 100, piston 20, sealing ring 201, first clamping ring 202, second clamping ring 203, clamping block 2031, adjusting block 2032, half block 2021, piston ring 204, piston rod 30, connecting block 40, feed channel 401, discharge channel 402, feed main channel 403, discharge main channel 404, valve 50, pressure sensor 60.

[0041] The embodiment is basically as shown in the attached Figures 1 to 10 shown.

[0042] The utility model relates to a cylinder structure for continuous discharging, which is uniquely designed and is intended for continuous discharging when quantitative equipment is used.

[0043] Specifically, a cylinder structure for continuous discharge includes a cylinder 10, a piston 20 that can slide axially along the cylinder 10 and is connected to an external drive, a double-acting piston rod 30 on which the piston 20 is fixedly installed, and a connecting block 40 fixed on the outside of the cylinder 10. The piston 20 divides the internal space of the cylinder 10 into two independent chambers. Both ends of the double-acting piston rod 30 pass through the sealing end seats 100 at both ends of the cylinder 10. A feed channel 401 and a discharge channel 402 are provided on the sealing end seats 100. The feed channel 401 and the discharge channel 402 are connected to the chambers on the corresponding sides.

[0044] The connecting block 40 is also processed with a feed channel 401 and a discharge channel 402, and is also processed with a feed main channel 403 and a discharge main channel 404. The feed channel 401 and the main feed channel form a structurally symmetrical feed T-shaped channel, and the discharge channel 402 and the main discharge channel form a structurally symmetrical discharge T-shaped channel. The two ends of the feed channel 401 on the connecting block 40 are respectively connected to the feed channels 401 at the two ends of the cylinder body 10, and the two ends of the discharge channel 402 on the connecting block 40 are respectively connected to the discharge channels 402 at the two ends of the cylinder body 10.

[0045] A valve 50 is installed on the feed channel 401 , and a valve 50 is installed on the discharge channel 402 . The valve 50 in this embodiment is a shut-off valve, and the shut-off valve is fixedly installed on the connection block 40 .

[0046] In order to realize the pressure of each chamber in the cylinder body 10, a pressure sensor 60 is installed on the sealing end seat 100, and the chamber pressure is monitored in real time through the pressure sensor 60. The pressure sensor 60 is connected to the controller, so that when the pressure of the corresponding side chamber increases, the valve 50 on the discharge channel 402 of the chamber with increased pressure is controlled by the controller to open, so as to release the pressure of the chamber in time to ensure safety. Figures 8 to 10 The double-acting piston rod 30 of this embodiment is of an integral structure; both ends of the double-acting piston rod 30 have the same cross-sectional area. Two positioning ring grooves are machined on the double-acting piston rod 30.

[0047] The piston 20 includes two U-shaped cross-section sealing rings 201 facing oppositely, a first clamping ring 202 and a second clamping ring 203 for clamping the sealing rings 201 from both sides, and a piston ring 204 separating adjacent U-shaped cross-section sealing rings 201. The first clamping ring 202 and the second clamping ring 203 are respectively located in the positioning ring grooves on the corresponding sides.

[0048] The sealing ring 201 is a universal plug, the piston ring 204 is sleeved on the piston rod 30, and the piston ring 204 is a cylindrical structure with a central annular protrusion. The two sealing rings 201 are located on both axial sides of the protrusion. The first clamping ring 202 and the second clamping ring 203 cover the piston ring 204 and are used to clamp the sealing ring 201.

[0049] A sealing member is provided between the piston ring 204 and the double-acting piston rod 30 , and the sealing member is an O-ring in this embodiment.

[0050] The second clamping ring 203 includes a clamping block 2031 and an adjusting block 2032 that are fitted with wedge surfaces. The first clamping ring 202 and the second clamping ring 203 both adopt a two-piece half-ring structure that can be detachably connected. The two half-ring structures of the first clamping ring 202 are spliced ​​by bolts. The clamping block 2031 also adopts a two-piece half-block 2021 structure, and is also spliced ​​and locked with bolts. The adjusting block 2032 is also two half-blocks 2021. The adjusting block 2032 is clamped by the clamping block 2031 and the sealing ring 201, so it does not need to be assembled and fixed during installation.

[0051] When this solution is adopted, in the working cycle of the piston 20 and the double-acting piston rod 30, when the piston 20 moves to one side, the valve 50 on the discharge channel 402 of the squeezed side chamber is controlled to open for easy discharge, and the valve 50 on the feed channel 401 connected to the squeezed side chamber is closed, and the valve 50 on the feed channel 401 connected to the expansion chamber is controlled to open for easy feeding, and the valve 50 on the discharge channel 402 connected to the expansion chamber is opened for easy feeding. In this way, when the piston 20 moves, the fluid always flows out of the chamber on the squeezed side, and the newly filled fluid always fills the expansion chamber; and no matter which side the piston 20 moves to, there is always a chamber being squeezed and a chamber being expanded, thereby ensuring that the fluid can be continuously fed and discharged after passing through the cylinder body 10.

[0052] Embodiment 2

[0053] Combination Fig.11 and Fig.12 The difference between the second embodiment and the first embodiment is that: first, the double-acting piston rod 30 is a split piston rod 30, the first clamping ring 202 and the lower section of the double-acting piston rod 30 are integrally formed, and the second clamping ring 203 and the lower section of the double-acting piston rod 30 are fixed to the upper section of the double-acting piston rod 30 by bolts at the same time.

[0054] Second, in order to facilitate the fixed installation of the second clamping ring 203, a clearance groove is processed on the lower section of the double-acting piston rod 30.

[0055] Third, the first clamping ring 202 and the lower section of the double-acting piston rod 30 are integrated into one design, combined with the detachable characteristics of the second clamping ring 203. On the one hand, the one-piece molding enhances the stability and durability of the structure; on the other hand, the detachable second clamping ring 203 is convenient for separate replacement or maintenance. In addition, the second clamping ring 203 and the lower section of the double-acting piston rod 30 are fixedly connected to the upper section of the double-acting piston rod 30 by the same bolt, which greatly reduces the difficulty of disassembly and assembly.

[0056] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A cylinder structure for continuous discharging, comprising a cylinder, a piston connected to an external drive, the piston dividing the cylinder into two separate chambers, characterized in that: Each chamber is connected with a feed channel and a discharge channel, and valves are installed on the feed channel and the discharge channel.

2. A cylinder structure for continuous discharging according to claim 1, characterized in that: The feeding ends of the two feeding channels are both communicated with the provided feeding main channel, and the discharging ends of the two discharging channels are both communicated with the provided discharging main channel.

3. A cylinder structure for continuous discharging according to claim 2, characterized in that: It also includes a fixedly installed connecting block, on which the main feed channel and the main discharge channel are both arranged, and the main feed channel and the feed channel, the main discharge channel and the discharge channel are all T-shaped.

4. A cylinder structure for continuous discharging according to claim 1, characterized in that: Pressure sensors are also included for monitoring the pressure in each chamber.

5. A cylinder structure for continuous discharging according to any one of claims 1 to 4, characterized in that: A piston rod is inserted into the cylinder body, a piston is fixed on the piston rod, the piston comprises a piston ring and a sealing ring mounted on the piston ring and facing oppositely, a protrusion is arranged on the piston ring, and adjacent sealing rings are separated by the protrusion.

6. A cylinder structure for continuous discharging according to claim 5, characterized in that: The piston further comprises a first clamping ring and a second clamping ring for clamping the sealing ring, the first clamping ring and the second clamping ring are located on both axial sides of the piston ring, and the first clamping ring and the second clamping ring are fixed on the piston rod.

7. A cylinder structure for continuous discharging according to claim 6, characterized in that: The first clamping ring and the second clamping ring cover the piston ring from both axial ends of the piston ring.

8. The cylinder structure for continuous discharging according to claim 6, characterized in that: The second clamping ring includes a clamping block and an adjusting block that are wedge-matched. The piston rod is provided with two locating ring grooves along the axial direction. The first clamping ring is located in one locating ring groove, and the second clamping ring is located in the other locating ring groove. The first clamping ring and the second clamping ring are both constructed of two half rings that are detachably connected.

9. The cylinder structure for continuous discharging according to claim 5, characterized in that: A sealing member is provided between the piston ring and the piston rod.

10. The cylinder structure for continuous discharging according to claim 5, characterized in that: The piston rod is a double-acting piston rod, both ends of which penetrate the cylinder body, and both ends of the double-acting piston rod have the same cross-sectional area.

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