Dispensing valve for dispensing machine

Abstract

The utility model relates to the technical field of dispensing valves, in particular to a dispensing valve for a dispensing machine, which comprises a main body and a nozzle positioned below the main body, a mounting seat is fixedly mounted above the main body, a glue blocking mechanism is arranged below the mounting seat, the glue blocking mechanism comprises a mounting disc, and a cleaning mechanism is arranged below the mounting disc; the glue blocking mechanism further comprises a moving block slidably connected with the mounting disc, a gear ring is arranged above the mounting disc, a driving wheel is arranged in the mounting base, a mounting rod is arranged below the moving block, a telescopic rod is arranged below the mounting rod and slidably connected with the mounting rod, and a scraping brush is fixedly mounted on the telescopic rod. By arranging the glue blocking mechanism, the bottom of the nozzle is blocked through the scraping brush at the moment when the valve needle is pneumatically driven to be closed in the dispensing valve, and the problem that part of glue still flows out of the nozzle after the dispensing valve leaves the surface of a product due to the fact that the valve needle needs to be closed for a certain time is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of glue dispensing valves, in particular to a glue dispensing valve for a glue dispensing machine. Background Art

[0002] A dispensing machine is an automated machine that controls fluids through dispensing valves and drips or applies fluids to the surface or inside of products. The dispensing valve is the most important working component on the dispensing machine. Dispensing valves are divided into different types due to different opening and closing methods. Among them, the ejector-type dispensing valve is the most widely used. At present, the ejector-type dispensing valve usually drives the valve needle downward through air pressure to achieve the purpose of cutting off the glue.

[0003] In the prior art, during the use of the dispensing valve, it takes a certain amount of time for the pneumatically driven valve needle to close. Therefore, some glue will still flow out of the nozzle after the dispensing valve leaves the surface of the product, affecting the accurate control of the amount of glue in the dispensing work. If the glue bonded to the nozzle of the dispensing valve is not handled in time, it will solidify on the nozzle, causing blockage of the nozzle and affecting the normal progress of subsequent dispensing work. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a glue dispensing valve for a glue dispensing machine, which solves the problems raised by the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above object, the utility model provides the following technical solution: a dispensing valve for a dispensing machine, comprising a main body and a nozzle located below the main body, a mounting seat is fixedly installed above the main body, a glue blocking mechanism is provided below the mounting seat, the glue blocking mechanism comprises a mounting plate, and a cleaning mechanism is provided below the mounting plate;

[0008] The glue blocking mechanism also includes a moving block slidably connected to the mounting plate, a gear ring is provided above the mounting plate, and a driving wheel is provided in the mounting seat, a mounting rod is provided below the moving block, a telescopic rod is provided below the mounting rod, and the telescopic rod is slidably connected to the mounting rod, and a scraper brush is fixedly installed on the telescopic rod.

[0009] Preferably, the mounting plate is rotatably connected to the mounting seat via a bearing, and the driving wheel is meshingly connected to the gear ring, and the driving wheel is rotatably connected to the mounting seat via a rotating shaft.

[0010] Preferably, a screw rod is provided in the mounting plate, and both ends of the screw rod respectively penetrate the mounting plate and are rotatably connected to the mounting plate, the screw rod penetrates the moving block and is threadedly connected to the moving block, a threaded rod is provided in the mounting rod, and the upper end of the threaded rod penetrates the mounting rod and is rotatably connected to the mounting rod, and the lower end of the threaded rod penetrates the telescopic rod and is threadedly connected to the telescopic rod.

[0011] Preferably, the cleaning mechanism includes a cleaning plate arranged corresponding to the scraper brush, the cleaning plate is rotatably connected to the mounting disk via a support rod, a first gear is sleeved on the support rod, a first rack is arranged in the mounting disk, and the first rack is meshingly connected to the first gear.

[0012] Preferably, a connecting rod is provided in the mounting disk, a flywheel is provided in the mounting disk, and two ends of the connecting rod are rotationally connected to the flywheel and the first rack through a rotating shaft respectively.

[0013] Preferably, the mounting rod is rotatably connected to the moving block via a mounting shaft, a second gear is sleeved on the mounting shaft, a second rack is provided in the moving block, and the second rack is slidingly connected to the moving block, the second rack is meshingly connected to the second gear, a cylinder is provided in the moving block, and the second rack is connected to the output end of the cylinder piston rod.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a dispensing valve for a dispensing machine, which has the following beneficial effects:

[0016] By setting up a glue blocking mechanism, the bottom of the nozzle is blocked by a scraper brush at the moment the pneumatically driven valve needle in the dispensing valve closes, so as to avoid the problem that some glue still flows out of the nozzle after the dispensing valve leaves the product surface due to the time required for the valve needle to close. The scraper brush can rotate around the nozzle under the drive of the mounting plate to clean the residual glue on the nozzle. The cleaning mechanism is used to clean the glue on the scraper brush during the blocking process and the nozzle cleaning process, so as to avoid affecting the cleaning function of the scraper brush. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the nozzle of the utility model;

[0020] Figure 3 This is a structural schematic diagram of the glue blocking mechanism of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the cleaning mechanism of the utility model;

[0022] Figure 5 For this utility model Figure 4A schematic diagram of the enlarged structure in FIG.

[0023] In the figure: 1. main body; 2. nozzle; 3. mounting seat; 4. glue blocking mechanism; 401. mounting plate; 402. gear ring; 403. driving wheel; 404. mounting rod; 405. screw rod; 406. telescopic rod; 407. scraper brush; 408. threaded rod; 409. moving block; 5. cleaning mechanism; 501. cleaning plate; 502. support rod; 503. first gear; 504. first rack; 505. connecting rod; 506. flying disc; 507. mounting shaft; 508. second gear; 509. second rack; 510. cylinder. DETAILED DESCRIPTION

[0024] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0025] Figure 1-Figure 5 As one embodiment of the utility model, a dispensing valve for a dispensing machine includes a main body 1 and a nozzle 2 located below the main body 1, a mounting seat 3 is fixedly installed above the main body 1, a glue blocking mechanism 4 is provided below the mounting seat 3, the glue blocking mechanism 4 includes a mounting plate 401, and a cleaning mechanism 5 is provided below the mounting plate 401; the glue blocking mechanism 4 also includes a moving block 409 slidably connected to the mounting plate 401, a gear ring 402 is provided above the mounting plate 401, and a driving wheel 403 is provided in the mounting seat 3, a mounting rod 404 is provided below the moving block 409, a telescopic rod 406 is provided below the mounting rod 404, and the telescopic rod 406 is slidably connected to the mounting rod 404, and a scraper brush 407 is fixedly installed on the telescopic rod 406, by providing the glue blocking mechanism 4, the scraper brush 407 is used to block the bottom of the nozzle 2 at the moment when the pneumatically driven valve needle in the dispensing valve is closed, so as to avoid the problem that part of the glue still flows out of the nozzle 2 after the dispensing valve leaves the product surface due to the fact that the valve needle takes a certain time to close.

[0026] In this embodiment, reference Figure 1 , Figure 2 , Figure 3As shown, the mounting plate 401 is rotatably connected to the mounting seat 3 through a bearing, and the driving wheel 403 is meshed with the gear ring 402, and the driving wheel 403 is rotatably connected to the mounting seat 3 through a rotating shaft, a screw rod 405 is arranged in the mounting plate 401, and the two ends of the screw rod 405 respectively penetrate the mounting plate 401 and are rotatably connected to the mounting plate 401, the screw rod 405 penetrates the moving block 409 and is threadedly connected to the moving block 409, a threaded rod 408 is arranged in the mounting rod 404, and the upper end of the threaded rod 408 penetrates the mounting rod 404 and is rotatably connected to the mounting rod 404, and the lower end of the threaded rod 408 penetrates the telescopic rod 406 and is threadedly connected to the telescopic rod 406, and the dispensing valve stops working. The pneumatic drive At the same time as the valve needle is closed, the motor in the mounting disk 401 is started to drive the screw rod 405 to rotate, and the moving block 409 is pushed under the limiting effect of the mounting disk 401, and the moving block 409 drives the mounting rod 404 to slide until the telescopic rod 406 and the scraper brush 407 are in contact with the surface of the nozzle 2, thereby quickly blocking the residual glue in the nozzle 2. After the dispensing valve leaves the product surface, the motor in the mounting seat 3 is started to drive the driving wheel 403 to rotate, and the gear ring 402 cooperates with the mounting disk 401 to drive the mounting rod 404, the telescopic rod 406 and the scraper brush 407 to rotate around the nozzle 2, so that the scraper brush 407 cleans the residual glue on the nozzle 2 during the rotation.

[0027] In this embodiment, reference Figure 4 and Figure 5As shown, the cleaning mechanism 5 includes a cleaning plate 501 arranged corresponding to the scraper brush 407, the cleaning plate 501 is rotatably connected to the mounting plate 401 through a support rod 502, a first gear 503 is sleeved on the support rod 502, a first rack 504 is arranged in the mounting plate 401, and the first rack 504 is meshed with the first gear 503, a connecting rod 505 is arranged in the mounting plate 401, a flywheel is arranged in the mounting plate 401, and the two ends of the connecting rod 505 are rotatably connected to the flywheel and the first rack 504 through a rotating shaft, the mounting rod 404 is rotatably connected to the moving block 409 through a mounting shaft 507, a second gear 508 is sleeved on the mounting shaft 507, a second rack 509 is arranged in the moving block 409, and the second rack 509 is slidably connected to the moving block 409, and the second rack 505 is connected to the moving block 409. 09 is meshed and connected with the second gear 508, a cylinder 510 is provided in the moving block 409, and the second rack 509 is connected to the output end of the piston rod of the cylinder 510, and the second rack 509 is driven to slide by the cylinder 510, and the second gear 508 is cooperated to make the mounting rod 404 rotate, drive the telescopic rod 406 and the scraper brush 407 to rotate one hundred and eighty degrees and align with the cleaning plate 501, start the motor to drive the flying disc 506 to rotate, and during the rotation of the flying disc 506, the connecting rod 505 is pushed to move back and forth, thereby driving the first rack 504 to slide back and forth, and cooperating with the first gear 503 to drive the support rod 502 and the cleaning plate 501 to rotate back and forth, and clean the residual glue on the scraper brush 407 to avoid the residual glue adhering to the scraper brush 407 affecting the subsequent normal use of the scraper brush 407.

[0028] When the present embodiment is working, the motor in the mounting plate 401 is started to drive the screw rod 405 to rotate while the pneumatic drive valve needle is closed after the dispensing valve stops working. Under the limiting effect of the mounting plate 401, the moving block 409 is pushed. The moving block 409 drives the mounting rod 404 to slide until the telescopic rod 406 and the scraper brush 407 are in contact with the surface of the nozzle 2, so as to quickly block the residual glue in the nozzle 2. After the dispensing valve leaves the surface of the product, the motor in the mounting seat 3 is started to drive the driving wheel 403 to rotate, and the gear ring 402 is cooperated to make the mounting plate 401 drive the mounting rod 404, the telescopic rod 406 and the scraper brush 407 to rotate around the nozzle 2, so that the scraper brush 407 rotates. During the process, the glue remaining on the nozzle 2 is cleaned up, and then the second rack 509 is driven to slide by the cylinder 510, and the second gear 508 is cooperated to make the mounting rod 404 rotate, driving the telescopic rod 406 and the scraper brush 407 to rotate 180 degrees and align with the cleaning plate 501, and the motor is started to drive the flying disc 506 to rotate. During the rotation of the flying disc 506, the connecting rod 505 is pushed to move back and forth, thereby driving the first rack 504 to slide back and forth, and cooperating with the first gear 503 to drive the support rod 502 and the cleaning plate 501 to rotate back and forth, and the residual glue on the scraper brush 407 is cleaned to prevent the residual glue adhering to the scraper brush 407 from affecting the subsequent normal use of the scraper brush 407.

[0029] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0030] It should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dispensing valve for a dispensing machine, comprising a main body (1) and a nozzle (2) located below the main body (1), characterized in that: A mounting seat (3) is fixedly mounted above the main body (1), a glue blocking mechanism (4) is provided below the mounting seat (3), the glue blocking mechanism (4) comprises a mounting plate (401), and a cleaning mechanism (5) is provided below the mounting plate (401); The glue blocking mechanism (4) further comprises a moving block (409) slidably connected to the mounting plate (401), a gear ring (402) is provided above the mounting plate (401), a driving wheel (403) is provided in the mounting seat (3), a mounting rod (404) is provided below the moving block (409), a telescopic rod (406) is provided below the mounting rod (404), the telescopic rod (406) is slidably connected to the mounting rod (404), and a scraping brush (407) is fixedly mounted on the telescopic rod (406).

2. A dispensing valve for a dispensing machine according to claim 1, characterized in that: The mounting plate (401) is rotatably connected to the mounting seat (3) via a bearing, and the driving wheel (403) is meshingly connected to the gear ring (402), and the driving wheel (403) is rotatably connected to the mounting seat (3) via a rotating shaft.

3. The dispensing valve for a dispensing machine according to claim 1, characterized in that: A screw rod (405) is provided in the mounting plate (401), and both ends of the screw rod (405) respectively penetrate the mounting plate (401) and are rotatably connected to the mounting plate (401), the screw rod (405) penetrates the moving block (409) and is threadedly connected to the moving block (409), a threaded rod (408) is provided in the mounting rod (404), and the upper end of the threaded rod (408) penetrates the mounting rod (404) and is rotatably connected to the mounting rod (404), and the lower end of the threaded rod (408) penetrates the telescopic rod (406) and is threadedly connected to the telescopic rod (406).

4. The dispensing valve for a dispensing machine according to claim 1, characterized in that: The cleaning mechanism (5) comprises a cleaning plate (501) arranged corresponding to the scraping brush (407); the cleaning plate (501) is rotatably connected to the mounting plate (401) via a support rod (502); a first gear (503) is sleeved on the support rod (502); a first rack (504) is arranged in the mounting plate (401), and the first rack (504) is meshingly connected to the first gear (503).

5. The dispensing valve for a dispensing machine according to claim 1, characterized in that: A connecting rod (505) is provided in the installation disk (401), a flywheel is provided in the installation disk (401), and two ends of the connecting rod (505) are rotatably connected to the flywheel and the first rack (504) via a rotating shaft.

6. The dispensing valve for a dispensing machine according to claim 1, characterized in that: The mounting rod (404) is rotatably connected to the moving block (409) via the mounting shaft (507); a second gear (508) is sleeved on the mounting shaft (507); a second rack (509) is provided in the moving block (409); the second rack (509) is slidably connected to the moving block (409); the second rack (509) is meshingly connected to the second gear (508); a cylinder (510) is provided in the moving block (409); the second rack (509) is connected to the output end of the piston rod of the cylinder (510).

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