Metering valve device

Abstract

The utility model provides a metering valve device, and relates to the technical field of dispensing, the metering valve device comprises a metering valve main body and a metering valve mounting part, the metering valve main body comprises a main body mounting seat, the metering valve mounting part further comprises a quick release assembly, the quick release assembly comprises a valve body mounting seat for fixing the main body mounting seat, and the valve body mounting seat is provided with a containing cavity for containing the main body mounting seat; the metering valve further comprises a first limiting assembly and a second limiting assembly, the first limiting assembly and the second limiting assembly limit the main body installation base in the containing cavity from the side and the upper portion of the containing cavity respectively, quick disassembly and installation of the metering valve main body can be quickly achieved through the metering valve installation part, and replacement and maintenance are convenient; the switching between the first channel and the second channel of the metering valve body is accurately controlled through the valve element rotating unit, and high-precision dispensing is achieved.

Description

Technical Field

[0001] This application relates to the field of dispensing technology, and in particular to a metering valve device. Background Technology

[0002] In high-precision dispensing, the maintenance of the metering valve device is crucial to achieving the desired dispensing accuracy. Components such as the needle and valve core are prone to clogging or wear due to prolonged contact with adhesive, directly affecting dispensing accuracy. The viscosity of the adhesive inside the syringe is easily affected by the environment, requiring timely replacement of the adhesive. Clogging caused by adhesive curing can easily lead to the push rod getting stuck or insufficient pressure, resulting in insufficient adhesive volume. Therefore, disassembly and cleaning are necessary. However, traditional metering valves have complex installation structures, and disassembly and installation require considerable time, increasing maintenance time and extending the unit's downtime. Summary of the Invention

[0003] This invention proposes a metering valve device to solve the problems of insufficient glue volume control accuracy and inconvenient maintenance in existing technologies. By optimizing the metering valve device, high-precision dispensing, rapid disassembly, maintenance, and installation are achieved.

[0004] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0005] The present invention provides a metering valve device, including a metering valve body and a metering valve mounting part. The metering valve body includes a main body mounting seat, and the metering valve mounting part further includes a quick-release assembly. The quick-release assembly includes a valve body mounting seat that fixes the main body mounting seat, and the valve body mounting seat has an accommodating cavity for receiving the main body mounting seat. It also includes a first limiting assembly and a second limiting assembly, which respectively limit the main body mounting seat within the accommodating cavity from the side and the top of the accommodating cavity.

[0006] Furthermore, the metering valve mounting part includes a push rod mounting assembly, which includes a push rod mounting seat and an auxiliary push rod mounting seat inside the push rod mounting seat. A push rod cap is fitted on the top of the push rod and is mounted on the auxiliary push rod mounting seat. A push rod pressure plate is provided above the push rod cap. The left side of the push rod mounting seat is higher than the right side, and a pressure plate mounting groove is opened on the left side. The left side of the push rod pressure plate enters the pressure plate mounting groove. A sliding groove is opened in the middle of the push rod pressure plate, and a fixing stud passes through the sliding groove and is fixed to the right side of the push rod mounting seat.

[0007] Furthermore, the first limiting component includes a front rotating rod located on the right side of the valve body mounting seat, a front limiting plate movably mounted on the rotating rod, a first buckle auxiliary component on the left side of the front limiting plate, and a first buckle longitudinally fixed on the right side of the valve body mounting seat, the first buckle being snapped into the first buckle auxiliary component.

[0008] Furthermore, the second limiting component includes a left stop block located on the upper left of the valve body mounting seat, an upper baffle plate is provided above the valve body mounting seat, the left stop block has multiple insertion slots, the upper baffle plate is inserted into the insertion slots to the left, a second buckle is vertically fixed on the right side of the valve body mounting seat, a second buckle auxiliary component is provided on the right side of the upper baffle plate, and the second buckle is snapped into the second buckle auxiliary component.

[0009] Furthermore, the metering valve body is composed of a push rod, a valve core, a needle, and a syringe. The push rod is driven by a push rod drive unit. The valve core, needle, syringe, and push rod are fixed inside the main body mounting base. The main body mounting base includes a first channel and a second channel. A ceramic sleeve is fitted around the valve core. The ceramic sleeve includes a first connecting hole and a second connecting hole. The first channel communicates with the first connecting hole, and the second channel communicates with the second connecting hole. The first channel is connected to the syringe to form an inlet for glue, and the second channel connects the needle and the push rod to form a push rod cavity.

[0010] Furthermore, the bottom of the valve body mounting base includes a dispensing window through which the needle dispenses adhesive.

[0011] Furthermore, the valve core rotation unit includes a valve core rotation shaft connected to the valve core, a first drive assembly connected to the valve core rotation shaft, and a monitoring assembly. The monitoring assembly includes a sensing plate fixed on the valve core rotation shaft and a sensor fixed on the back plate.

[0012] Furthermore, the push rod drive unit includes a second drive assembly and a guide rail assembly fixed to the back plate, and the guide rail assembly is fixedly connected to the push rod mounting base.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This invention provides a metering valve device, which allows for quick disassembly and installation of the metering valve body via a metering valve mounting section, facilitating replacement and maintenance. The valve core rotation unit precisely controls the switching between the first and second channels of the metering valve body, achieving high-precision dispensing. Attached Figure Description

[0015] To more clearly illustrate the technical solution proposed by the present invention, a detailed description is provided below in conjunction with the embodiments and accompanying drawings. It should be understood that the accompanying drawings described below are merely some embodiments of the present invention, and those skilled in the art can make changes to these drawings under the concept of the present invention.

[0016] Figure 1 An assembly perspective view of an embodiment of the metering valve device provided by the present invention;

[0017] Figure 2 Another perspective view of the assembly of the metering valve device provided by the present invention;

[0018] Figure 3 An assembly perspective view of the metering valve mounting part and the valve core rotating unit provided for the invention;

[0019] Figure 4 An assembly perspective view of an embodiment of the metering valve body provided by the present invention;

[0020] Figure 5 A cross-sectional view of the dispensing state of the metering valve device provided by the present invention;

[0021] Figure 6 This is a cross-sectional view of the dispensing state of the metering valve device provided by the present invention.

[0022] 1. Push rod drive unit; 10. Dustproof sheet metal; 11. Second drive assembly; 12. Guide rail assembly; 2. Valve core rotation unit; 21. Sensing plate; 22. First drive assembly; 23. Valve core rotation shaft; 24. Back plate; 3. Metering valve mounting part; 31. Valve body mounting seat; 32. Front rotation rod; 33. Front limit plate; 34. First latch; 341. First latch auxiliary component; 35. Second latch; 351. Second latch auxiliary component; 36. Left stop block; 361. Socket; 3 7. Upper baffle; 4. Metering valve body; 41. Push rod; 411. Push rod cap; 42. Valve core; 421. First adhesive channel; 422. Second adhesive channel; 43. Needle; 44. Syringe; 441. Luer connector; 45. Main body mounting base; 451. First channel; 452. Second channel; 453. Push rod cavity; 51. Push rod mounting base; 52. Push rod auxiliary mounting base; 53. Push rod pressure plate; 531. Sliding groove; 54. Pressure plate mounting groove; 55. Fixing stud. Detailed Implementation

[0023] Please refer to the following: Figure 2 A metering valve device includes a metering valve body 4 and a metering valve mounting part 3. The metering valve body 4 includes a main body mounting seat 45. The metering valve mounting part 3 also includes a quick-release assembly. The quick-release assembly includes a valve body mounting seat 31 that fixes the main body mounting seat 45. The valve body mounting seat 31 has an accommodating cavity for receiving the main body mounting seat 45. It also includes a first limiting assembly and a second limiting assembly, which respectively limit the main body mounting seat 45 within the accommodating cavity from the side and the top of the accommodating cavity.

[0024] Please refer to the following: Figure 1 The metering valve body 4 is composed of a push rod 41, a valve core 42, a needle 43, and a syringe 44. The push rod 41 is driven by the push rod drive unit 1, and the valve core 42 is driven by the valve core rotation unit 2. The metering valve body 4 is installed on the metering valve mounting part 3. The metering valve device also includes a dustproof sheet metal 10 surrounding the metering valve body 4 to prevent environmental particles (dust, silicon chips, etc.) from contaminating the interior of the metering valve device.

[0025] Please refer to the following: Figure 3 The metering valve mounting part 3 includes a push rod mounting assembly, which includes a push rod mounting seat 51. A push rod auxiliary mounting seat 52 is provided inside the push rod mounting seat 51. A push rod cap 411 is fitted on the top of the push rod 41. The push rod cap 411 is mounted on the push rod auxiliary mounting seat 52. A push rod pressure plate 53 is provided above the push rod cap 411. The left side of the push rod mounting seat 51 is higher than the right side, and a pressure plate mounting groove 54 is opened on the left side. The left side of the push rod pressure plate 53 enters the pressure plate mounting groove 54. A sliding groove 531 is opened in the middle of the push rod pressure plate 53. A fixing stud 55 passes through the sliding groove 531 and is fixed to the right side of the push rod mounting seat 51. When the stud is loosened, the push rod pressure plate 53 can be slid to the right, so that the restriction of the push rod pressure plate 53 on the push rod cap 411 is completely released. Then the push rod cap 411 can be removed from the push rod auxiliary mounting seat 52, and then the push rod 41 can be taken out upward to achieve disassembly.

[0026] Please refer to the following: Figure 4 , Figure 5 , Figure 6The metering valve body 4 includes a main mounting base 45, in which a valve core 42, a needle 43, a syringe 44, and a push rod 41 are fixed. The main mounting base 45 includes a first channel 451, a second channel 452, a valve core mounting hole, and a push rod receiving cavity. The valve core 42 is located in the valve core mounting hole, and a ceramic sleeve is provided between the valve core 42 and the inner wall of the valve core mounting hole. The ceramic sleeve includes a first connecting hole and a second connecting hole. The first channel 451 communicates with the first connecting hole. The valve core 42 divides the second channel 452 into a first channel segment and a second channel segment. The push rod 41 is inserted into the push rod receiving cavity, and the lower end of the push rod 41 forms a push rod cavity 453 between the bottom surface and the side wall of the push rod receiving cavity. The first channel segment is connected to the push rod cavity 453 through the second connecting hole, and the second channel segment is connected to the needle 43 through the other half of the second connecting hole located on the ceramic sleeve. A first adhesive channel 421 is provided on the outer circumferential surface of the valve core 42, and a second adhesive channel 422 is provided radially through the valve core 42. In actual use, after the metering valve device receives the dispensing command, the first drive assembly 22 drives the valve core rotation shaft 23 to rotate the valve core 42. The first adhesive channel 421 connects the first channel 451 with the first section of the second channel 452. The second drive assembly 11 and the guide rail assembly 12 cooperate to drive the push rod 41. The push rod 41 rises, and the adhesive enters the push rod cavity 453 through the glue inlet, the first channel 451, the first adhesive channel 421, and the first section of the channel. The adhesive is sucked into the push rod cavity 453, completing the glue dispensing action. After the adhesive is drawn into place, the first drive assembly 22 drives the valve core rotation shaft 23, causing the valve core 42 to rotate at a set angle. The second adhesive channel 422 aligns and connects the first and second sections of the second channel 452. However, at this time, the first adhesive channel 421 rotates to the other side, and the outer circumferential surface of the valve core 42 blocks the first channel 451, preventing further connection between the first and second channels, thus blocking the adhesive inlet. Subsequently, the second drive assembly 11 and the guide rail assembly 12 work together to drive the push rod 41 downwards, squeezing the adhesive outwards from the push rod cavity 453. The adhesive then enters the needle 43 through the first section, the second adhesive channel 422, and the second section, and subsequently drips out from the needle 43. The monitoring assembly includes a sensing element 21 fixed to the valve core rotation shaft 23 and a sensor fixed to the back plate 24. Each time the valve core rotation shaft 23 rotates, the monitoring assembly performs a check to see if the sensing element 21 exceeds the sensor's sensing range.

[0027] In high-precision dispensing, the maintenance of the metering valve device is crucial to achieving the desired dispensing accuracy. Components such as the needle 43 and valve core 42, which are in prolonged contact with adhesive, are prone to clogging or wear, directly affecting dispensing accuracy. The viscosity of the adhesive in the syringe 44 is easily affected by the environment, requiring frequent replacement of the adhesive. Clogging caused by adhesive curing can easily lead to the push rod 41 jamming or incomplete depressurization. Therefore, a quick-release metering valve device is needed for timely replacement and cleaning of core components. To this end, in this embodiment, the metering valve mounting part 3 also includes a quick-release assembly. The quick-release assembly includes a valve body mounting base 31 that fixes the main mounting base 45. The main mounting base 45 is located within the valve body mounting base 31, and the valve body mounting base 31 has multiple fixed positioning posts. These positioning posts enclose the receiving chamber of the main mounting base 45, limiting and supporting the inner side of the main mounting base 45, leaving a channel for the main mounting base 45 to move only on the side of the receiving chamber. The bottom of the valve body mounting base 31 includes a dispensing window, through which the needle 43 dispenses adhesive.

[0028] Furthermore, a front rotating rod 32 is fixed on the right side of the valve body mounting seat 31, and a front limiting plate 33 is rotatably connected to the rotating rod. A first buckle auxiliary component 341 is provided on the left side of the front limiting plate 33, and a first buckle 34 is longitudinally fixed on the right side of the valve body mounting seat 31. The first buckle 34 is snapped onto the first buckle auxiliary component 341, thereby pressing and limiting the main body mounting seat 45 on the valve body mounting seat 31 from the side. A left stop block 36 is provided on the upper left side of the valve body mounting base 31. An upper baffle 37 is fixed on the upper side of the valve body mounting base 31. The left stop block 36 has multiple insertion slots 361. The upper baffle 37 is inserted into the insertion slots 361 to the left. A second buckle 35 is vertically fixed on the right side of the valve body mounting base 31. A second buckle auxiliary component 351 is provided on the right side of the upper baffle 37. The second buckle 35 is snapped onto the second buckle auxiliary component 351 to fix the upper baffle 37, thereby pressing the main mounting base 45 onto the valve body mounting base 31 from top to bottom. Therefore, when it is necessary to disassemble the main mounting base 45, simply release the latch between the second latch 35 and the second latch auxiliary component 351, and the upper baffle 37 can be moved to the right, so that the part of the upper stop block inserted into the left stop block 36 is removed, and then the upper stop block can be removed as a whole; release the latch between the first latch 34 and the first latch auxiliary component 341, and the front limit plate 33 can be rotated outward around the rotating rod to open. At this time, the upper and side passages of the main mounting base 45 are released, and it can be removed from the valve body mounting base 31.

[0029] Specifically, when replacing the syringe 44, a Luer connector 441 is inclinedly installed on the main mounting base 45. The bottom of the Luer connector 441 is connected to the first channel 451 through a sealed transition channel. The syringe 44 outlet end is equipped with a Luer connector 441. During installation, the Luer connector 441 is inserted along the inclined direction to form a sealed connection. When replacing the glue, simply pull the syringe 44 out along the inclined direction of the Luer connector 441. When replacing or cleaning the push rod 41, loosen the fixing studs 55 of the fixed push rod pressure plate 53 and the push rod mounting base 51, slide it to the left through the sliding groove 531, remove the push rod pressure plate 53 from the pressure plate mounting groove 54, release the constraint of the push rod pressure plate 53 on the push rod cap 411, grab the push rod cap 411, and take the push rod 41 upwards at the same time. When replacing or cleaning the needle 43 and valve core 42, press down the second latch 35 to release the lock between the second latch 35 and the second latch auxiliary component 351, loosen the screws fixing the upper baffle 37 and the valve body mounting seat 31, and pull the upper baffle 37 horizontally away from the insertion port 361 of the left stop block 36; press down the first latch 34 to release the lock between the first latch 34 and the first latch auxiliary component 341, rotate the front limit plate 33 90° with the front rotating rod 32 as the center of rotation, and lift the main body mounting seat 45 vertically upward; for the independent main body mounting seat 45, remove the sealing rings on both sides of the ceramic sleeve, then remove the ceramic sleeve and the valve core 42 fitted inside, and then remove the needle 43 in the axial direction. Further use a vacuum suction pen with a lint-free cotton swab to clean the residual glue in the first channel 451 and the second channel 452.

[0030] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0031] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] The above description represents specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A metering valve apparatus, characterized by, The device includes a metering valve body and a metering valve mounting part. The metering valve body includes a main mounting seat, and the metering valve mounting part includes a quick-release assembly. The quick-release assembly includes a valve body mounting seat that fixes the main mounting seat, and the valve body mounting seat has an accommodating cavity for receiving the main mounting seat. The device also includes a first limiting assembly and a second limiting assembly, which respectively limit the main mounting seat within the accommodating cavity from the side and top of the accommodating cavity.

2. The metering valve apparatus of claim 1, wherein, The metering valve mounting part includes a push rod mounting assembly, which includes a push rod mounting seat. The push rod mounting seat has an auxiliary push rod mounting seat inside. A push rod cap is fitted on the top of the push rod and is mounted on the auxiliary push rod mounting seat. A push rod pressure plate is provided above the push rod cap. The left side of the push rod mounting seat is higher than the right side, and a pressure plate mounting groove is opened on the left side. The left side of the push rod pressure plate enters the pressure plate mounting groove. A sliding groove is opened in the middle of the push rod pressure plate, and a fixing stud passes through the sliding groove and is fixed to the right side of the push rod mounting seat.

3. The metering valve apparatus of claim 1, wherein, The first limiting component includes a front rotating rod located on the right side of the valve body mounting seat, a front limiting plate movably mounted on the rotating rod, a first buckle auxiliary component on the left side of the front limiting plate, and a first buckle longitudinally fixed on the right side of the valve body mounting seat, the first buckle being snapped into the first buckle auxiliary component.

4. The metering valve apparatus of claim 1, wherein, The second limiting component includes a left stop block located on the upper left of the valve body mounting base. An upper baffle is provided above the valve body mounting base. The left stop block has multiple insertion slots. The upper baffle is inserted into the insertion slots to the left. A second buckle is vertically fixed on the right side of the valve body mounting base. A second buckle auxiliary component is provided on the right side of the upper baffle. The second buckle is snapped into the second buckle auxiliary component.

5. The metering valve apparatus of claim 4, wherein, The metering valve body consists of a push rod, a valve core, a needle, and a syringe. The push rod is driven by a push rod drive unit. The valve core, the needle, the syringe, and the push rod are fixed inside the main body mounting base. The main body mounting base includes a first channel and a second channel. A ceramic sleeve is fitted around the valve core. The ceramic sleeve includes a first connecting hole and a second connecting hole. The first channel communicates with the first connecting hole, and the second channel communicates with the second connecting hole. The first channel is connected to the syringe to form an inlet for glue, and the second channel connects the needle and the push rod to form a push rod cavity.

6. The metering valve apparatus of claim 5, wherein, The bottom of the valve body mounting base includes a dispensing window, through which the needle dispenses adhesive.

7. The metering valve apparatus of claim 6, wherein, It also includes a valve core rotation unit, which includes a valve core rotation shaft connected to the valve core, a first drive assembly connected to the valve core rotation shaft, and a monitoring assembly. The monitoring assembly includes a sensing plate fixed to the valve core rotation shaft and a sensor fixed to the back plate.

8. The metering valve apparatus of claim 7, wherein, The push rod drive unit includes a second drive assembly and a guide rail assembly fixed to the back plate, and the guide rail assembly is fixedly connected to the push rod mounting base.

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