Dispensing system, dispensing machine and production line
By using a V-shaped guide port and a positive pressure gas system in the dispensing system, the problem of bubble generation when adding glue is solved, the needle connection strength and airtightness are ensured, the equipment structure is simplified and the cost is reduced.
Patent Information
- Application Number
- CN202422155369.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-09-03
AI Technical Summary
Existing dispensing machines are prone to generating bubbles when adding glue, resulting in a decrease in the connection strength and airtightness between the needle tube and the needle seat of the nine-needle needle. The vibration of the existing stirring mechanism affects the accuracy and is costly, and the buffer channel increases complexity and space occupancy.
The glue storage barrel adopts a V-shaped guide port design. By controlling the pouring direction of the glue, it is evenly poured from bottom to top. Combined with the locking mechanism and positive pressure gas system, it avoids the generation of bubbles and maintains the quality of the glue.
Effectively eliminate glue bubbles, ensure needle connection strength and airtightness, simplify structure and reduce costs, and improve the yield rate of the production line.
Smart Images
Figure CN223300289U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of glue dispensing processing, in particular to a glue dispensing system, a glue dispensing machine provided with the glue dispensing system, and a production line provided with the glue dispensing machine. Background Art
[0002] During the production process of the nine-needle needle 9, the nine-needle needle 9 needs to be glued so that the needle tube 911 and the needle seat 912 of the nine-needle needle 9 can be tightly connected. Therefore, the quality of the glue-dispensing process will directly determine the tensile strength and air tightness of the needle tube 911. The existing nine-needle needle 9 is basically processed by an automated glue-dispensing machine. Since the glue-dispensing machine has a high glue-dispensing efficiency, it is necessary to frequently and regularly add glue (such as UV glue) to the glue storage barrel of the glue-dispensing machine during the production process; however, since the glue is relatively viscous, when adding glue, it is easy to generate bubbles in the process of the glue flowing to the glue storage barrel, and after the glue enters the glue storage barrel, the bubbles can basically not be discharged from the glue, so that when the nine-needle needle 9 is glued, the bubbles will flow to the nine-needle needle 9 with the glue, and when the glue is cured by the UV light source, the bubbles will remain in the nine-needle needle 9 (such as Figure 1 As shown in the figure, the connection strength between the needle tube 911 and the needle seat 912 is weakened, the pull-out strength of the needle tube 911 is weakened, and the air tightness of the connection between the needle tube 911 and the needle seat 912 is reduced. This will cause the nine-needle needle head 9 to easily separate from the needle seat 912 under the action of injection pressure during use, or leakage at the connection between the needle tube 911 and the needle seat 912.
[0003] In order to solve the problem of bubbles mixed in glue, existing treatment methods include:
[0004] The first one, such as Figure 2 As shown, a stirring mechanism 93 is provided on the glue storage barrel 92, and the stirring mechanism 93 includes a driving motor 931 and a stirring frame 932. The driving motor 931 is installed on the cover of the glue storage barrel 92, and the stirring frame 932 is placed in the glue storage barrel 92 and connected to the driving motor 931, so that the driving motor 931 can drive the stirring frame 932 to rotate to stir the glue in the glue storage barrel 92, thereby discharging the bubbles in the glue; however, the disadvantage of this treatment method is that the stirring frame 932 will vibrate more or less during the stirring process, and since the nine-needle needle 9 and the needle tube 911 are small in size, the vibration generated during the operation of the stirring mechanism 93 is likely to affect the dispensing accuracy and dispensing quality; in addition, there is also a risk that the air in the glue storage barrel 92 will mix into the glue during the stirring frame 932 stirring the glue; furthermore, the setting of the stirring mechanism 93 will increase the cost and energy consumption of the dispensing machine.
[0005] The second type, such as Figure 3As shown, the glue in the glue supply barrel 95 is first pumped into the buffer channel 96 through the air pump 94, and then the glue in the buffer channel 96 is slowly flowed to the glue storage barrel 97 through the pipeline, and flows into the glue storage barrel 97 along the barrel ratio of the glue storage barrel 97, so as to eliminate the bubbles contained in the glue when adding glue; however, the disadvantages of this treatment method are: it increases the complexity and cost of the glue supply system; in addition, it is necessary to make the setting height of the buffer channel 96 higher than the setting height of the glue storage barrel 97, which increases the space occupied by the dispensing equipment; furthermore, the glue storage barrel 97 is difficult to seal and pressurize (sealing and pressurizing may cause the glue in the buffer channel 96 to be unable to flow to the glue storage barrel 97), resulting in dust easily entering the glue storage barrel 97, causing the glue to be contaminated, and the inability to pressurize the glue storage barrel 97 may cause the glue to be interrupted when supplying glue to the dispensing pump 98 (that is, there may be an air section between the two sections of glue in the glue supply pipe 99 due to the interruption of flow). Summary of the Invention
[0006] The main purpose of the utility model is to provide a glue dispensing system which has a simple structure, can avoid bubbles being mixed into the glue when the glue is supplemented, and has low cost.
[0007] Another object of the present invention is to provide a glue dispensing machine equipped with the above-mentioned glue dispensing system.
[0008] Another object of the present invention is to provide a production line equipped with the above-mentioned dispensing machine.
[0009] In order to achieve the main purpose of the utility model, the utility model provides a dispensing system, including a dispensing needle, a dispensing valve, a glue supply hose and a glue storage barrel, the dispensing needle is connected to the nozzle of the dispensing valve, the first end of the glue supply hose is connected to the glue inlet of the dispensing valve, the glue storage barrel includes a barrel body, the barrel body has a glue storage cavity and a glue outlet, the glue storage cavity is connected with the glue outlet, the glue storage barrel includes a column and an inverted cone, the glue storage cavity is formed on the column and the inverted cone, the opening of the glue storage cavity is formed at the top of the column, the bottom of the inverted cone is connected to the bottom of the column, the glue outlet is formed at the top of the inverted cone, the second end of the glue supply hose is connected to the glue outlet, wherein a V-shaped guide port is provided on the wall of the column, the V-shaped guide port is located in the glue storage cavity, the opening of the V-shaped guide port is located at the top of the column, the tip of the V-shaped guide port is set toward the inverted cone, and the V-shaped guide port is connected with the glue storage cavity.
[0010] As can be seen from the above, when adding glue to the glue storage barrel, the glue replenishing barrel is controlled to slowly pour out the glue toward the V-shaped guide port, so that the glue is evenly poured into the glue storage cavity along the barrel wall through the V-shaped guide port, and because the glue spreads from bottom to top, it effectively avoids the generation of bubbles during the flow of glue, and eliminates bubbles from the source; compared with the existing stirring to remove bubbles and setting up a buffer barrel to remove bubbles, this dispensing system is simpler and less costly to remove bubbles.
[0011] A further solution is that the V-shaped guide port is recessed from the inner wall surface of the wall portion toward the outer wall surface of the wall portion, and the opening of the V-shaped guide port is formed on the top surface of the column portion; and / or the glue storage barrel also includes two guide plates, which are connected to the wall portion, and the two guide plates are distributed in a V shape, forming a V-shaped guide port between the two guide plates and the wall portion.
[0012] It can be seen from the above that when the wall thickness of the glue storage barrel is relatively thick, the V-shaped guide port can be directly formed on the wall of the column, under the premise of ensuring that the V-shaped guide port can guide the glue and avoid the generation of bubbles; when the wall thickness of the glue storage barrel is relatively thin, two guide plates can be set on the wall of the column to form a V-shaped guide port to guide the glue and avoid the generation of bubbles in the glue, or the V-shaped guide port can be formed on the wall of the column and two guide plates can be configured for assistance.
[0013] A further solution is that when the V-shaped guide port is formed on the wall, the wall is also provided with a first drainage groove, which extends from the tip of the V-shaped guide port to the inverted cone along the axial direction of the column, and the first drainage groove is connected with the V-shaped guide port and the glue storage cavity; when the V-shaped guide port is formed by two guide plates and the wall, the glue storage barrel also includes two guide plates, one guide plate is connected to the end of the other guide plate near the inverted cone, and the guide plate extends axially to form a second drainage groove between the two guide plates and the wall, and the second drainage groove is connected with the V-shaped guide port and the glue storage cavity.
[0014] As can be seen from the above, the setting of the drainage groove is conducive to better draining the glue from the outlet end of the V-shaped guide port to the bottom of the glue storage barrel, so as to further reduce the probability of bubble generation and improve the bubble removal effect when adding glue.
[0015] A further solution is that the width of the opening of the V-shaped guide port is between 13 mm and 25 mm; and the height of the V-shaped guide port is 1.2 times to 2 times the width of the opening of the V-shaped guide port.
[0016] As can be seen from the above, by designing the size of the V-shaped guide port, the V-shaped guide port can better drain the added glue and remove bubbles, thereby ensuring the bubble removal effect of the V-shaped guide port.
[0017] A further solution is that the glue storage barrel further includes a cover body, which covers the open opening.
[0018] As can be seen from the above, the addition of a cover can prevent external powder from entering the glue storage cavity and contaminating the glue, thereby protecting the glue.
[0019] A further solution is that the glue storage barrel also includes a locking mechanism, which is connected between the barrel body and the cover body, and the locking mechanism is used to lock the barrel body and the cover body together; the dispensing system also includes a first pressure supply pipeline, a control valve, a pressure regulating valve and a pressure gauge, the first end of the first pressure supply pipeline is connected to the cover body, the first pressure supply pipeline is connected to the glue storage chamber, the exhaust end of the control valve is connected to the second end of the first pressure supply pipeline, and a second pressure supply pipeline is provided between the exhaust end of the pressure regulating valve and the air inlet end of the control valve, and the pressure gauge is arranged on the second pressure supply pipeline.
[0020] As can be seen from the above, the setting of the locking mechanism makes it more convenient to open and close the cover body, and also makes it possible to feed clean gas into the glue storage chamber to maintain a positive pressure state in the glue storage chamber, which is more conducive to the glue in the glue storage barrel to flow to the dispensing valve; and the first pressure supply pipeline, control valve, pressure regulating valve and pressure gauge are set, so that gas can be fed into the glue storage chamber according to processing requirements to maintain a positive pressure state in the glue storage chamber.
[0021] A further solution is that the dispensing system also includes an air filter and a pressure relief valve, the air filter is arranged on the first pressure supply pipeline, the pressure relief valve is installed on the cover body, and the pressure relief valve is connected to the glue storage chamber.
[0022] As can be seen from the above, the air filter is used to filter out water and impurities (such as dust, etc.) contained in the gas sent into the glue storage chamber, so as to prevent the water and / or impurities in the gas from entering the glue storage chamber and impacting the glue surface to generate bubbles; and when the air pressure in the glue storage chamber is too high, the pressure can be released through the pressure relief valve to prevent the glue storage barrel from bursting due to excessive internal air pressure.
[0023] A further solution is that the locking mechanism includes a screw and a nut, the first end of the screw is hinged to the barrel body, and the nut is threadedly connected to the screw; there are more than two notches on the cover body, the number of locking mechanisms is more than two, the more than two notches correspond one-to-one to the more than two locking mechanisms, the screw passes through a corresponding notch, the nut is located above the cover body and abuts against the cover body, or the cover body is hinged to the barrel body, at least one notch is provided on the cover body, the number of locking mechanisms is at least one, the notch is arranged corresponding to the locking mechanism, the screw passes through a corresponding notch, the nut is located above the cover body and abuts against the cover body; the control valve is a solenoid valve, an electric valve or a pneumatic valve.
[0024] As can be seen from the above, through the design of the locking mechanism, the locking mechanism can reliably lock and fix the barrel body and the cover body, and maintain a positive pressure state in the glue storage chamber.
[0025] In order to achieve another purpose of the present invention, the present invention provides a glue dispensing machine, including a control system, which also includes the above-mentioned glue dispensing system, and the control system is electrically connected to the glue dispensing system.
[0026] As can be seen from the above, the dispensing machine equipped with the above-mentioned dispensing system can better prevent bubbles from remaining in the needle after the dispensing process, thereby ensuring the firmness and airtightness of the connection between the needle seat and the needle tube of the needle, and also makes the structure of the dispensing machine simpler, and the production and use costs are lower.
[0027] In order to achieve another purpose of the present invention, the present invention provides a production line, which includes the above-mentioned dispensing machine.
[0028] As can be seen from the above, by using the above-mentioned dispensing machine, the production line can better prevent bubbles from remaining in the needles it produces, so as to ensure the firmness and airtightness of the connection between the needle seat and the needle tube, improve the yield rate, and reduce production and use costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 This is a structural diagram of an existing needle with bubbles inside after the needle dispensing process.
[0030] Figure 2 This is a structural diagram of an existing device that uses a stirring mechanism to stir the glue in a glue storage barrel to remove bubbles.
[0031] Figure 3 This is a diagram of an existing system that uses an air pump, a glue supply barrel, and a buffer channel to add glue to the glue storage barrel to remove bubbles in the glue.
[0032] Figure 4 It is a structural diagram of the first embodiment of the glue dispensing machine of the present utility model.
[0033] Figure 5 This is a system diagram of the dispensing system of the first embodiment of the dispensing machine of the present utility model.
[0034] Figure 6 This is a structural diagram of the glue storage barrel of the first embodiment of the glue dispensing machine of the present utility model.
[0035] Figure 7 This is a structural diagram of the barrel of the first embodiment of the glue dispensing machine of the present utility model.
[0036] Figure 8 This is a cross-sectional view of the glue storage barrel of the second embodiment of the glue dispensing machine of the present invention with some components omitted.
[0037] Figure 9 This is a cross-sectional view of the glue storage barrel of the third embodiment of the glue dispensing machine of the present invention with some components omitted.
[0038] Figure 10 This is a cross-sectional view of the glue storage barrel of the fourth embodiment of the glue dispensing machine of the present invention with some components omitted.
[0039] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION
[0040] Dispensing machine first embodiment
[0041] Reference Figure 4 The dispensing machine 100 includes a frame 101, a dispensing system 102, a driving system 103, a transplanting system 104, a curing system 105, a control system 106 and a negative pressure generating system; wherein the control system 106 is electrically connected to the dispensing system 102, the transplanting system 104, the curing system 105 and the negative pressure generating system respectively, and the control system 106 is used to coordinate the operation of the various subsystems of the dispensing machine 100.
[0042] Combine Figure 5 The dispensing system 102 includes a dispensing needle 1, a dispensing valve 2, a glue supply hose 3, a glue storage barrel 4, a first pressure supply pipeline 51, a second pressure supply pipeline 52, a control valve 61, a pressure regulating valve 62, a pressure gauge 63, a pressure relief valve 64 and an air filter 7.
[0043] Dispensing needle 1 interfaces with the nozzle of dispensing valve 2, enabling dispensing valve 2 to precisely dispense glue onto the needle seat and tubing of a needle (e.g., a nine-needle needle) through dispensing needle 1. Dispensing valve 2 is electrically connected to control system 106, enabling control system 106 to control the opening and closing of dispensing valve 2 to initiate and stop dispensing. If pneumatically operated, dispensing valve 2 is also connected to a negative pressure generating system.
[0044] The first end of the glue supply hose 3 is connected to the glue inlet of the glue dispensing valve 2, and the second end of the glue supply hose 3 is connected to the glue outlet 4121 of the glue storage barrel 4 to guide the glue output from the glue storage barrel 4 to the glue dispensing valve 2. Among them, the length of the glue supply hose 3 is preferably between 250 mm and 400 mm, and the inner diameter of the glue supply hose 3 is preferably between 3 mm and 6 mm; preferably, the length of the glue supply hose 3 is 300 mm, and the inner diameter of the glue supply hose 3 is 4 mm, so that even if the dispensing system 102 is not equipped with the first pressure supply pipeline 51, the second pressure supply pipeline 52, the control valve 61, the pressure regulating valve 62, the pressure gauge 63, the pressure relief valve 64 and the air filter 7 and other components to supply positive pressure gas to the glue storage chamber 410 of the glue storage barrel 4, the glue in the glue storage barrel 4 can also flow to the dispensing valve 2 through the glue supply hose 3 by relying on its own gravity, and the glue is always in a full state in the glue supply hose 3, preventing air from being retained in the glue supply hose 3 or mixing in bubbles, thereby ensuring the quality of dispensing.
[0045] Combine Figure 6 and Figure 7The glue storage barrel 4 is mounted on the frame 101 and includes a barrel body 41, a cover 42, and a locking mechanism 43. The barrel body 41 includes a column 411 and an inverted tapered portion 412, wherein a glue storage chamber 410 is formed on the column 411 and the inverted tapered portion 412. The opening of the glue storage chamber 410 is formed at the top of the column 411, and the bottom of the inverted tapered portion 412 is connected to the bottom of the column 411. The glue outlet 4121 is formed at the top of the inverted tapered portion 412 and is connected to the glue storage chamber 410. Preferably, the column 411 is cylindrical and the inverted tapered portion 412 is conical.
[0046] In addition, a V-shaped guide port 4111 is provided on the wall of the column 411, and the V-shaped guide port 4111 is located in the glue storage cavity 410 and is arranged near the top of the column 411. Among them, the opening 41111 of the V-shaped guide port 4111 is located at the top of the column 411, the proximal end 41112 of the V-shaped guide port 4111 is arranged toward the inverted cone 412, and the V-shaped guide port 4111 is connected to the glue storage cavity 410. By providing the V-shaped guide port 4111, when glue is added to the glue storage barrel 4, the glue replenishment barrel is controlled to slowly pour out the glue toward the V-shaped guide port 4111, so that the glue is evenly poured into the glue storage cavity 410 along the barrel wall of the glue storage barrel 4 through the V-shaped guide port 4111, and because the glue spreads from bottom to top, it effectively avoids the generation of bubbles during the flow of glue, and eliminates bubbles at the source. Compared with the existing methods of removing bubbles by stirring or setting up a buffer barrel, the dispensing system 102 is simpler and less costly in removing bubbles.
[0047] In this embodiment, the V-shaped guide port 4111 is recessed from the inner wall of the wall of the barrel body 41 toward the outer wall of the wall, and the opening of the V-shaped guide port 4111 is formed on the top surface of the column 411. It can be seen that when the barrel wall of the glue storage barrel 4 is thick, the V-shaped guide port 4111 can be directly formed on the wall of the column 411, while ensuring that the V-shaped guide port 4111 can guide the glue and avoid the generation of bubbles, so as to simplify the structure of the barrel body 41, make the processing of the barrel body 41 more convenient, and reduce the processing cost.
[0048] Furthermore, the width W of the opening of the V-shaped guide port 4111 is preferably between 13 mm and 25 mm, and the height H of the V-shaped guide port 4111 is preferably 1.2 to 2 times the width W of the opening 41111 of the V-shaped guide port 4111. More preferably, the width W of the opening of the V-shaped guide port 4111 is 15 mm, and the height H of the V-shaped guide port 4111 is 1.5 times the width W of the opening 41111 of the V-shaped guide port 4111. By designing the dimensions of the V-shaped guide port 4111 in this manner, the V-shaped guide port 4111 can better drain the added glue and remove bubbles, thereby ensuring the debubbling effect of the V-shaped guide port 4111.
[0049] The cover 42 is connected to the barrel 41, and the cover 42 can cover the opening of the glue storage chamber 410 to prevent the external powder bin from entering the glue storage chamber 410 and contaminating the glue, thereby protecting the glue. The locking mechanism 43 is connected between the barrel 41 and the cover 42 to lock and fix the barrel 41 and the cover 42 together. The number of locking mechanisms 43 can be set to one or more than two according to the connection method between the cover 42 and the barrel 41. The locking mechanism 43 preferably includes a screw 431 and a nut 432, the first end of the screw 431 is hinged to the barrel 41, and the nut 432 is threadedly connected to the screw 431.
[0050] In this embodiment, there are two locking mechanisms 43. The cover 42 is provided with notches 421. The number of notches 421 is the same as the number of locking mechanisms 43, with one notch 421 corresponding to one locking mechanism 43. When the cover 42 is fixedly connected to the barrel body 41, the nut 432 is loosened and the rod is passed through the corresponding notch 421 on the cover 42. The nut 432 is then tightened so that the nut 432 is positioned above the cover 42 and pressed against the cover 42.
[0051] Of course, as another optional solution, in other embodiments, the barrel body 41 and the cover body 42 can be hinged, and the number of the locking mechanism 43 can be set to one. Accordingly, the notch 421 on the cover body 42 can be set to one. When the cover body 42 and the barrel body 41 are fixedly connected, the cover body 42 is rotated so that the cover body 42 covers the opening of the glue storage cavity 410, and then the nut 432 is loosened and the rod is passed through the corresponding notch 421 on the cover body 42. Then, the nut 432 is tightened so that the nut 432 is located above the cover body 42 and pressed against the cover body 42. As another optional solution, in other embodiments, the locking mechanism 43 can also be a locking mechanism.
[0052] Preferably, a sealing gasket is provided between the barrel body 41 and the lid body 42 to seal the gap between the barrel body 41 and the lid body 42, thereby maintaining a positive pressure in the glue storage chamber 410. Furthermore, an operating ring 4321 is provided on the nut 432, which allows the user to tighten the nut 432 via the operating ring 4321, eliminating the need for specialized tools (such as a wrench), making it more convenient and easier to refill the glue storage barrel 4.
[0053] The first end of the first pressure supply line 51 is connected to the cover 42, and the first pressure supply line 51 is in communication with the glue storage chamber 410. The exhaust end of the control valve 61 is connected to the second end of the first pressure supply line 51, and the control valve 61 is electrically connected to the control system 106. Preferably, the control valve 61 can be a solenoid valve, an electric valve, or a pneumatic valve. When the control valve 61 is a pneumatic valve, the control valve 61 is also connected to the negative pressure generating system. The control valve 61 is used to control whether the first pressure supply line 51 supplies positive pressure gas to the glue storage chamber 410. A second pressure supply line 52 is provided between the exhaust end of the pressure regulating valve 62 and the air inlet end of the control valve 61. The pressure regulating valve 62 is used to adjust the pressure of the positive pressure gas entering the glue storage chamber 410. In addition, the air inlet end of the pressure regulating valve 62 is connected to the negative pressure generating system via a third pressure supply line, enabling the negative pressure generating system to supply positive pressure gas to the glue storage chamber 410 through the first and second pressure supply lines 51, 52. A pressure gauge 63 is provided on the second pressure supply line 52. The pressure gauge 63 is used to read the pressure of the positive-pressure gas entering the glue storage chamber 410, so that the pressure regulating valve 62 can adjust the pressure of the positive-pressure gas entering the glue storage chamber 410. The first pressure supply line 51, the control valve 61, the pressure regulating valve 62, and the pressure gauge 63 are provided so that positive-pressure gas can be delivered to the glue storage chamber 410 according to processing requirements to maintain a positive pressure state in the glue storage chamber 410, thereby further facilitating the flow of glue in the glue storage barrel 4 to the dispensing valve 2.
[0054] The pressure relief valve 64 is preferably mounted on the cover 42 and communicates with the glue storage chamber 410. When the pressure in the glue storage chamber 410 is excessive, the pressure relief valve 64 relieves the excess positive pressure within the glue storage chamber 410 to prevent the glue storage barrel 4 from bursting due to excessive internal pressure. An air filter 7 is provided on the first pressure supply line 51 to remove water and impurities (such as dust) from the gas entering the glue storage chamber 410, ensuring the cleanliness of the gas and preventing water and / or impurities in the gas from entering the glue storage chamber 410 and impacting the glue surface, generating bubbles.
[0055] The transfer system 104 is mounted on the frame 101 and is used to control the movement of the carrier containing the needle between the dispensing position and the curing system 105. The drive system 103 is mounted on the frame 101 and located at the dispensing position. The dispensing valve 2 is mounted on the drive end of the drive system 103, allowing the drive system 103 to drive the dispensing needle 1 relative to the needle at the upper end of the carrier to dispense glue to the needle seat and needle tube. The curing system 105 is used to perform a light-curing treatment on the needle after the dispensing process to quickly solidify the glue.
[0056] The following briefly describes the dispensing and curing process of the glue dispenser 100: When dispensing and curing a needle, the needle is placed on a carrier, which is then placed on the drive end of the transfer system 104. Next, the transfer system 104 drives the carrier to the dispensing position. The drive system 103 then drives the dispensing needle 1 to perform the dispensing process. After the needle has finished dispensing, the transfer system 104 drives the carrier to the curing system 105 to cure the glue on the needle.
[0057] In summary, it can be seen that through the design of the dispensing system 102 of the dispensing machine 100, the dispensing machine 100 can better prevent bubbles from remaining in the needle after the dispensing process, thereby ensuring the firmness and airtightness of the connection between the needle seat and the needle tube of the needle. At the same time, it also makes the structure of the dispensing machine 100 simpler, and the production and use costs are lower.
[0058] Second embodiment of the dispensing machine
[0059] Reference Figure 8 The difference between this embodiment and the first embodiment of the dispensing machine is that:
[0060] A first drainage groove 811 is also provided on the wall of the column portion 812 of the barrel body 81. The first drainage groove 811 extends axially along the column portion 812 from the tip of the V-shaped guide port 813 to the inverted cone portion 814. The first drainage groove 811 is connected to the V-shaped guide port 813 and the glue storage chamber 810. The provision of the first drainage groove 811 facilitates better drainage of the glue from the outlet end of the V-shaped guide port 813 to the bottom of the glue storage barrel, further reducing the probability of bubble generation and improving the de-bubble removal effect when adding glue.
[0061] Dispensing machine third embodiment
[0062] Combine Figure 9 The difference between this embodiment and the first embodiment of the dispensing machine lies in the molding position of the V-shaped guide port. Specifically, in this embodiment:
[0063] The glue storage barrel also includes two guide plates 821 connected to the wall of the barrel body 822. The two guide plates 821 are arranged in a V-shape, forming a V-shaped guide opening 8210 between the two guide plates 821 and the wall. Preferably, the tip of the V-shaped guide opening 8120 has a notch to allow the glue to flow better along the barrel wall to the bottom of the glue storage barrel. If the barrel wall thickness is relatively thin, two guide plates 821 can be installed on the wall of the column 8221 of the barrel body 822 to form a V-shaped guide opening 8210 to guide the glue and prevent bubbles in the glue.
[0064] Preferably, the glue storage barrel further includes two guide plates 823, one of which is connected to the end of the guide plate 821 near the inverted cone 824. The guide plates 823 extend axially, and a second drainage groove 8230 is formed between the two guide plates 823 and the wall. The second drainage groove 8230 is connected to the V-shaped guide port 8210 and the glue storage chamber 820. The provision of the second drainage groove 8230 facilitates better drainage of the glue from the outlet end of the V-shaped guide port 8210 to the bottom of the glue storage barrel, thereby further reducing the probability of bubble generation and improving the bubble removal effect when adding glue.
[0065] Dispensing machine fourth embodiment
[0066] Combine Figure 10 The difference between this embodiment and the first to fourth embodiments of the dispensing machine lies in the molding position of the V-shaped guide port. Specifically, in this embodiment:
[0067] A V-shaped guide port 8310 is formed on the wall of the column 831 of the barrel body 83; and the glue storage barrel further includes two guide plates 84 to further form the above-mentioned V-shaped guide port 8310 with the column 831. This design makes it unnecessary for the wall thickness of the glue storage barrel to be too thick, and the guide plates 84 occupy a small space in the glue storage cavity 830.
[0068] Furthermore, a first drainage groove 8311 is formed on the wall of the column 831, and the glue storage barrel further includes two drainage plates 85, and a second drainage groove 850 is formed between the two drainage plates 85. The second drainage groove 850 matches the first drainage groove 8311 to form a drainage groove together.
[0069] Production line example
[0070] The production line includes the dispensing machine described in any one of the first to fourth embodiments. By using the dispensing machine, the production line can better prevent bubbles from being trapped in the needles produced, thereby ensuring the secure and airtight connection between the needle seat and the needle tube, improving the yield rate, and reducing production and use costs.
[0071] Finally, it should be emphasized that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. Dispensing system, including: Dispensing needle; A dispensing valve, wherein the dispensing needle is connected to the nozzle of the dispensing valve; A glue supply hose, the first end of which is connected to the glue inlet of the glue dispensing valve A glue storage barrel, comprising a barrel body, the barrel body having a glue storage cavity and a glue outlet, the glue storage cavity being connected to the glue outlet, the glue storage barrel comprising a column portion and an inverted cone portion, the glue storage cavity being formed on the column portion and the inverted cone portion, the opening of the glue storage cavity being formed at the top of the column portion, the bottom of the inverted cone portion being connected to the bottom of the column portion, the glue outlet being formed at the top of the inverted cone portion, and the second end of the glue supply hose being connected to the glue outlet; Its characteristics are: A V-shaped guide port is provided on the wall of the column, and the V-shaped guide port is located in the glue storage cavity. The opening of the V-shaped guide port is located at the top of the column, and the tip of the V-shaped guide port is arranged toward the inverted cone portion. The V-shaped guide port is connected to the glue storage cavity.
2. The dispensing system according to claim 1, wherein: The V-shaped guide port is recessed from the inner wall of the wall portion toward the outer wall of the wall portion, and the opening of the V-shaped guide port is formed on the top surface of the column portion; and / or The glue storage barrel also includes two guide plates, which are connected to the wall portion. The two guide plates are distributed in a V shape, and the V-shaped guide port is formed between the two guide plates and the wall portion.
3. The dispensing system according to claim 2, characterized in that: When the V-shaped guide port is formed on the wall portion, the wall portion is further provided with a first guide groove, the first guide groove extending from the tip of the V-shaped guide port to the inverted cone portion along the axial direction of the column portion, and the first guide groove is connected with the V-shaped guide port and the glue storage cavity; When the V-shaped guide port is formed by two guide plates and the wall portion, the glue storage barrel also includes two guide plates, one guide plate is connected to the end of the guide plate close to the inverted cone portion, the guide plate extends along the axial direction, and a second drainage groove is formed between the two guide plates and the wall portion, and the second drainage groove is connected to the V-shaped guide port and the glue storage cavity.
4. The dispensing system according to claim 3, characterized in that: The width of the opening of the V-shaped guide port is between 13 mm and 25 mm; The height of the V-shaped guide port is 1.2 to 2 times the width of the opening of the V-shaped guide port.
5. The dispensing system according to any one of claims 1 to 4, characterized in that: The glue storage barrel further comprises a cover body, and the cover body covers the open opening.
6. The dispensing system according to claim 5, characterized in that: The glue storage barrel further includes a locking mechanism, which is connected between the barrel body and the cover body, and is used to lock and fix the barrel body and the cover body together; The dispensing system also includes a first pressure supply pipeline, a control valve, a pressure regulating valve and a pressure gauge. The first end of the first pressure supply pipeline is connected to the cover body, the first pressure supply pipeline is connected to the glue storage chamber, the exhaust end of the control valve is connected to the second end of the first pressure supply pipeline, and a second pressure supply pipeline is provided between the exhaust end of the pressure regulating valve and the air inlet end of the control valve. The pressure gauge is arranged on the second pressure supply pipeline.
7. The dispensing system according to claim 6, characterized in that: The dispensing system also includes: an air filter, the air filter being arranged on the first pressure supply pipeline; A pressure relief valve is installed on the cover body and is communicated with the glue storage chamber.
8. The dispensing system according to claim 7, characterized in that: The locking mechanism includes a screw and a nut, wherein the first end of the screw is hinged to the barrel, and the nut is threadedly connected to the screw; The cover body is provided with two or more notches, the number of the locking mechanisms is two or more, the two or more notches correspond to the two or more locking mechanisms, the screw passes through a corresponding notch, the nut is located above the cover body and abuts against the cover body, or The cover is hinged to the barrel, the cover is provided with at least one notch, the number of the locking mechanism is at least one, the notch is provided corresponding to the locking mechanism, the screw passes through the corresponding notch, and the nut is located above the cover and abuts against the cover; The control valve is a solenoid valve, an electric valve or a pneumatic valve.
9. Glue dispensing machine, including a control system, characterized in that, It also includes the dispensing system according to any one of claims 1 to 8, wherein the control system is electrically connected to the dispensing system.
10. Production line, characterized in that, Including the dispensing machine as described in claim 9.