Dispensing mechanism and dispensing machine for electronic components

Abstract

The utility model discloses a kind of dispensing mechanism and dispensing machine for electronic components, it is related to dispensing machine technical field.The dispensing mechanism for electronic components, comprising: valve body, glue cavity is equipped in the valve body, glue cavity lower end is equipped with discharge channel;Force lever, the force lever is located in valve body, force lever end close to discharge channel is equipped with glue needle, the force lever moves along the axial direction of valve body can be blocked or not blocked discharge channel;Side shell, the side shell is installed in one side of valve body, auxiliary containing cavity is equipped in valve body, auxiliary containing cavity with discharge channel between there is negative pressure flow channel, negative pressure flow channel is equipped with the cannula that can be inserted into auxiliary containing cavity, the dispensing mechanism for electronic components and dispensing machine, by setting negative pressure passage in the side of discharge channel, this kind of suction can improve the back suction amount of glue solution, further avoid glue dripping phenomenon.

Description

Technical Field

[0001] This utility model relates to the field of dispensing machine technology, specifically to a dispensing mechanism and dispensing machine for electronic components. Background Technology

[0002] A dispensing machine, also known as a glue applicator, glue sprayer, or glue applicator, is an automated machine that controls fluids and applies them to the surface or interior of a product.

[0003] Existing dispensing machines require a dispensing mechanism. To prevent dripping, leakage, or dripping of adhesive when dispensing is not needed, a negative pressure channel is typically installed on the discharge channel. In actual operation, a solenoid valve controls compressed air to apply thrust to the adhesive for discharge or controls the reverse flow of compressed air to apply negative pressure to the negative pressure channel. However, this method relying on solenoid valves is costly, and because it draws directly from the discharge channel, the suction capacity is poor when the discharge channel is closed, and adhesive will still remain in the discharge channel. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a dispensing mechanism and dispensing machine for electronic components. It solves the problems of high cost associated with relying on solenoid valves in existing technologies, as well as poor suction capacity and the presence of adhesive residue in the dispensing channel when the channel is closed due to direct suction from the feed channel.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dispensing mechanism for electronic components, comprising:

[0006] The valve body has a glue cavity inside, and a discharge channel is provided at the lower end of the glue cavity;

[0007] A force-applying rod is located inside the valve body. A glue needle is provided at one end of the force-applying rod near the discharge channel. The force-applying rod can block or not block the discharge channel by moving along the axial direction of the valve body.

[0008] The side shell is installed on one side of the valve body. The valve body is provided with an auxiliary receiving cavity. There is a negative pressure flow channel between the auxiliary receiving cavity and the discharge channel. There is a tube that can be inserted into the auxiliary receiving cavity on the negative pressure flow channel. There is an L-shaped return pipe between the auxiliary receiving cavity and the glue cavity. There is a piston cavity above the auxiliary receiving cavity. There is a piston II in the piston cavity. There are one-way valves in both the L-shaped return pipe and the tube.

[0009] A transmission structure is provided between the force-applying rod and the second piston, and the transmission structure enables the force-applying rod and the second piston to move in opposite directions.

[0010] Furthermore, one end of the L-shaped reflux pipe is close to the bottom surface of the auxiliary receiving cavity;

[0011] The valve body has a return channel in the area opposite to the L-shaped return pipe, and a sealing gasket is provided between the return channel and the L-shaped return pipe.

[0012] Furthermore, the transmission structure includes:

[0013] A rack column one, and a spring two is installed between the rack column one and the force-applying rod near the upper end;

[0014] A gear, which is rotatably mounted in the side housing and meshes with a rack column;

[0015] The second rack column is located inside the side shell and meshes with the gear. The lower end of the second rack column is fixedly connected to the second piston.

[0016] Furthermore, the transmission structure includes:

[0017] A central shaft is fixed inside the upper part of the side shell, and a swing arm is rotatably mounted on the central shaft;

[0018] A limiting groove is formed at both ends of the swing arm;

[0019] A connecting rod is fixedly provided on one side of the force-applying rod, and both the connecting rod and the piston rod of the second piston are provided with limiting pins, which are limited to the limiting groove.

[0020] Furthermore, the lower end of the glue needle is provided with an extension, and a plug is provided between the extension and the glue needle.

[0021] Furthermore, a diaphragm is provided between the lower end of the second piston and the bottom of the piston chamber.

[0022] Furthermore, a cap is provided on the side of the side shell away from the valve body.

[0023] Furthermore, an adhesive inlet connector is installed on one side of the valve body, and the adhesive inlet connector is opposite to the adhesive cavity.

[0024] Furthermore, an air chamber is provided on the upper part of the valve body, and an air inlet connector communicating with the air chamber is provided on one side of the valve body. A piston is slidably arranged in the air chamber, and a spring is installed on the upper surface of the piston.

[0025] On the other hand, this utility model also provides a dispensing machine for electronic components, characterized in that it includes the above-mentioned dispensing mechanism for electronic components.

[0026] This utility model has the following beneficial effects:

[0027] This electronic component dispensing mechanism and dispensing machine uses a negative pressure channel set on the side of the discharge channel and equipped with a corresponding piston. A transmission structure is set between the piston and the force rod so that when the glue needle closes, the piston moves upward and the negative pressure channel draws the glue from the discharge channel, thereby avoiding dripping and dripping. The cost is also lower. In addition, compared with the existing technology that directly draws from the sealing opening of the discharge channel, this method can increase the amount of glue back-drawing and further avoid dripping.

[0028] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0029] Figure 1 This is an external view of the dispensing mechanism of this utility model;

[0030] Figure 2 This is a cross-sectional view of the dispensing mechanism in Embodiment 1 of this utility model;

[0031] Figure 3 This is a diagram showing the internal structure of the valve body in Embodiment 1 of this utility model;

[0032] Figure 4 This is a diagram showing the internal structure of the side shell in Embodiment 1 of this utility model;

[0033] Figure 5 This is a schematic diagram of the orthographic projection of the internal structure of the dispensing mechanism in Embodiment 1 of this utility model;

[0034] Figure 6 This utility model Figure 3 Enlarged view of area A;

[0035] Figure 7 This is a schematic diagram of the one-way valve inside the cannula of this utility model;

[0036] Figure 8 This is a partial orthographic projection of the internal structure of the dispensing mechanism in Embodiment 2 of this utility model;

[0037] Figure 9 This is a schematic diagram of the glue needle blocking the discharge channel in Embodiment 2 of this utility model;

[0038] Figure 10 This is a schematic diagram of the dispensing machine of this utility model;

[0039] Figure 11 This utility model Figure 10 Enlarged view of area B.

[0040] In the diagram: 1. Air inlet connector; 2. Adhesive inlet connector; 3. Valve body; 31. Side shell; 32. End cap; 33. Piston chamber; 34. Auxiliary receiving chamber; 4. Force rod; 41. Adhesive needle; 411. Extension; 412. Plug; 5. Piston one; 6. Transmission structure; 61. Connecting rod; 62. Rack column one; 63. Gear; 64. Rack column two; 65. Spring two; 66. Swing arm; 67. Limiting pin; 68. Central shaft; 69. Limiting groove; 7. Piston two; 8. Dispensing machine; 9. Spring one; 10. Diaphragm; 11. Negative pressure flow channel; 12. Insert tube; 13. L-shaped return pipe; 14. Return channel; 15. Adhesive nozzle; 16. Air chamber; 17. Adhesive chamber; 18. Discharge channel. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0042] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0043] The following is based on Figures 1-11 This invention describes a dispensing mechanism and dispensing machine for electronic components provided in an embodiment of the present invention.

[0044] Please see Figures 1-3 This utility model provides a dispensing mechanism for electronic components, including a valve body 3, a glue cavity 17 inside the valve body 3, and a glue inlet connector 2 opposite to the glue cavity 17 installed on one side of the valve body 3. The glue inlet connector 2 is connected to the glue cartridge, and the glue liquid can enter the glue cavity 17 through the glue inlet connector 2. A discharge channel 18 is provided at the lower end of the glue cavity 17, and the lower end of the discharge channel 18 can be threaded to assemble glue nozzles 15 of different diameters. The glue liquid in the glue cavity 17 can enter the glue nozzles 15 through the discharge channel 18 and be dispensed onto the electronic components.

[0045] In order to open or close the discharge channel 18, a force-applying rod 4 is provided in the valve body 3. The force-applying rod 4 passes through the glue cavity 17. A glue needle 41 is provided at one end of the force-applying rod 4 near the discharge channel 18. The force-applying rod 4 can move along the axial direction of the valve body 3. When the force-applying rod 4 moves upward, the glue needle 41 can be disengaged from the discharge channel 18, at which time the discharge channel 18 is open. When the force-applying rod 4 moves downward, the glue needle 41 can be blocked by the discharge channel 18, at which time the discharge channel 18 is closed.

[0046] like Figure 2 and Figure 3 As shown, in order to enable the force rod 4 to move up or down, an air chamber 16 is provided in the upper part of the valve body 3, and an air inlet connector 1 communicating with the air chamber 16 is provided on one side of the valve body 3. A piston 5 is slidably arranged in the air chamber 16, and a spring 9 is installed on the upper surface of the piston 5.

[0047] In this embodiment, gas can enter the gas chamber 16 through the gas inlet connector 1 and push the piston 5 downward, stretching the spring 9. At this time, the piston 5 is in the state of pushing the force rod 4 downward, thereby blocking the discharge channel 18 with the glue needle 41. Conversely, when the gas supply to the gas inlet connector 1 is stopped, the spring 9 automatically rebounds and pulls the glue needle 41 back through the force rod 4. At this time, the glue needle 41 does not block the discharge channel 18.

[0048] In order to remove excess material from the discharge channel 18 when the glue needle 41 is closed, and to avoid dripping or drooping, a negative pressure channel 11 is provided on one side of the discharge channel 18. When the discharge channel 18 is closed, the negative pressure channel 11 can suck up excess material from the discharge channel 18.

[0049] Combination Figures 2-5 As shown, preferably, in order to achieve the suction effect of the negative pressure flow channel 11, a side shell 31 is provided. The side shell 31 is installed on one side of the valve body 3. The part of the side shell 31 that contacts the valve body 3 has a sealing gasket. An auxiliary receiving cavity 34 is provided inside the valve body 3. The negative pressure flow channel 11 is located between the auxiliary receiving cavity 34 and the discharge channel 18. A tube 12 that can be inserted into the auxiliary receiving cavity 34 is provided on the negative pressure flow channel 11. An L-shaped return pipe 13 is provided between the auxiliary receiving cavity 34 and the glue cavity 17. A piston cavity 33 is provided above the auxiliary receiving cavity 34. A piston 7 is provided in the piston cavity 33. A one-way valve (such as...) is provided in both the L-shaped return pipe 13 and the tube 12. Figure 7 ).

[0050] In this embodiment, when piston 7 moves upward, it creates a negative pressure state in the auxiliary receiving cavity 34. At this time, the one-way valve in the insertion tube 12 opens, and the one-way valve on the L-shaped return pipe 13 closes. Thus, the negative pressure flow channel 11 can draw excess adhesive from the discharge channel 18 and allow the adhesive to enter the auxiliary receiving cavity 34. When piston 7 moves downward, it creates a positive pressure state in the auxiliary receiving cavity 34. At this time, the one-way valve in the insertion tube 12 closes, and the one-way valve on the L-shaped return pipe 13 opens. Thus, the adhesive in the auxiliary receiving cavity 34 can flow back into the adhesive cavity 17 through the L-shaped return pipe 13.

[0051] Preferably, one end of the L-shaped return pipe 13 is close to the bottom surface of the auxiliary receiving cavity 34, so that under the positive pressure state in the auxiliary receiving cavity 34, what enters the L-shaped return pipe 13 is the adhesive liquid, not air.

[0052] Furthermore, a return channel 14 is provided on the valve body 3 in the area opposite to the L-shaped return pipe 13, and a sealing gasket is provided between the return channel 14 and the L-shaped return pipe 13 to ensure that the adhesive can flow back into the adhesive cavity 17.

[0053] In order to achieve the above-mentioned process where the glue needle 41 moves downward and closes the discharge channel 18, the piston 7 can move upward and suck material from the discharge channel 18 through the negative pressure flow channel 11. When the glue needle 41 moves upward and opens the discharge channel 18, the piston 7 can move downward. A transmission structure 6 is also provided here. The transmission structure 6 is located between the force rod 4 and the piston 7. The transmission structure 6 can make the force rod 4 and the piston 7 move in opposite directions.

[0054] Specifically, the aforementioned transmission structure 6 includes rack column one 62, gear 63, and rack column two 64.

[0055] like Figures 2-5 As shown, a connecting rod 61 is installed between rack column 62 and the upper end of the force-applying rod 4. Gear 63 is rotatably installed in the side shell 31 and meshes with rack column 62. Rack column 64 is located in the side shell 31 and meshes with gear 63. The lower end of rack column 64 is fixedly connected to piston 7.

[0056] In this implementation scheme, when the force rod 4 moves downward and drives the glue needle 41 to move downward, it can simultaneously drive the rack column 62 to move downward through the connecting rod 61. The rack column 62 can drive the rack column 64 to move upward through the gear 63, thereby driving the piston 7 below to move upward. Conversely, when the force rod 4 moves upward, it drives the piston 7 to move downward.

[0057] Preferably, a spring 65 is provided at the upper end of the rack post 62 to ensure the springback of the rack post 62 and the piston 5.

[0058] It should be noted that, referring to Figure 6 To prevent the adhesive in the glue cavity 17 from being drawn from the discharge channel 18 by the negative pressure flow channel 11, an extension 411 is provided at the lower end of the glue needle 41. A plug 412 is provided between the extension 411 and the glue needle 41. When the glue needle 41 moves down, the lower end of the extension 411 initially blocks the discharge channel 18. From then on, as the extension 411 gradually moves down, the discharge channel 18 is actually always in a blocked state. In this state, the piston 7 is still in an upward suction state, so it will not draw the adhesive in the glue cavity 17. The plug 412 is used to completely block the discharge channel 18 to avoid leakage caused by the incomplete sealing of the extension 411.

[0059] Preferably, a diaphragm 10 is provided between the lower end of piston 2 7 and the bottom of the groove of piston cavity 33, so as to prevent the adhesive in auxiliary receiving cavity 34 from contacting piston 2 7.

[0060] Preferably, a cleaning hole is provided on the side of the side shell 31 away from the valve body 3, and a head 32 is provided on the cleaning hole. The head 32 is threaded onto the cleaning hole. The head 32 can be removed and high-pressure water can be used to clean the auxiliary receiving cavity 34 through the cleaning hole.

[0061] Example 2:

[0062] Combination Figure 8 and Figure 9 As shown, the difference between this embodiment and Embodiment 1 is that the transmission structure 6 includes a central shaft 68, which is fixed in the upper part of the side shell 31. A swing arm 66 is rotatably mounted on the central shaft 68. Limiting grooves 69 are opened at both ends of the swing arm 66. The limiting grooves 69 are long grooves opened along the length direction of the swing arm 66. A connecting rod 61 is fixed on one side of the force rod 4. Both the connecting rod 61 and the piston rod of the piston 7 are provided with limiting pins 67, which are limited within the limiting grooves 69.

[0063] In this embodiment, when the force rod 4 moves downward, it can push the swing arm 66 to rotate counterclockwise through the connecting rod 61. The counterclockwise rotation of the swing arm 66 can cause its lower end to pull the piston rod of the second piston 7 upward, thereby causing the second piston 7 to move upward. Conversely, when the force rod 4 moves upward, it can push the swing arm 66 to rotate clockwise through the connecting rod 61. The clockwise rotation of the swing arm 66 can cause its lower end to push the piston rod of the second piston 7 downward, thereby causing the second piston 7 to move downward.

[0064] On the other hand, such as Figure 10 and Figure 11 This utility model also provides a dispensing machine 8 for electronic components, including the above-mentioned dispensing mechanism for electronic components. The dispensing machine 8 can control the dispensing mechanism to move along the X-axis, Y-axis and Z-axis, thereby dispensing adhesive onto electronic components.

[0065] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0066] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A dispensing mechanism for electronic components, characterized in that, include: Valve body (3), the valve body (3) is provided with a glue cavity (17), and the lower end of the glue cavity (17) is provided with a discharge channel (18); The force-applying rod (4) is located inside the valve body (3). The end of the force-applying rod (4) near the discharge channel (18) is provided with a glue needle (41). The force-applying rod (4) can move along the axial direction of the valve body (3) to block or not block the discharge channel (18). Side shell (31), the side shell (31) is installed on one side of valve body (3), the valve body (3) is provided with auxiliary receiving cavity (34), there is a negative pressure flow channel (11) between the auxiliary receiving cavity (34) and the discharge channel (18), there is a tube (12) on the negative pressure flow channel (11) that can be inserted into the auxiliary receiving cavity (34), there is an L-shaped return pipe (13) between the auxiliary receiving cavity (34) and the glue cavity (17), there is a piston cavity (33) above the auxiliary receiving cavity (34), there is a piston (7) in the piston cavity (33), and there are one-way valves in both the L-shaped return pipe (13) and the tube (12); The transmission structure (6) is located between the force-applying rod (4) and the piston (7). The transmission structure (6) enables the force-applying rod (4) and the piston (7) to move in opposite directions.

2. The dispensing mechanism for electronic components according to claim 1, characterized in that: One end of the L-shaped return pipe (13) is close to the bottom surface of the auxiliary receiving cavity (34); The valve body (3) is provided with a return channel (14) in the area opposite to the L-shaped return pipe (13), and a sealing gasket is provided between the return channel (14) and the L-shaped return pipe (13).

3. The dispensing mechanism for electronic components according to claim 2, characterized in that, The transmission structure (6) includes: A rack column (62) is provided, and a spring (65) is installed between the rack column (62) and the upper part of the force bar (4). Gear (63), which is rotatably mounted in the side housing (31) and meshes with rack post (62); The second rack column (64) is located inside the side shell (31). The second rack column (64) meshes with the gear (63). The lower end of the second rack column (64) is fixedly connected to the second piston (7).

4. The dispensing mechanism for electronic components according to claim 2, characterized in that, The transmission structure (6) includes: A central shaft (68) is fixed inside the upper part of the side shell (31), and a swing arm (66) is rotatably mounted on the central shaft (68). Limiting groove (69), the limiting groove (69) is formed at both ends of the swing arm (66); A connecting rod (61) is fixed on one side of the force-applying rod (4). Both the connecting rod (61) and the piston rod of the piston (7) are provided with limiting pins (67). The limiting pins (67) are limited to the limiting groove (69).

5. A dispensing mechanism for electronic components according to claim 3 or 4, characterized in that: The lower end of the glue needle (41) is also provided with an extension (411), and a plug (412) is provided between the extension (411) and the glue needle (41).

6. The dispensing mechanism for electronic components according to claim 5, characterized in that: A diaphragm (10) is provided between the lower end of the piston (7) and the bottom of the groove of the piston cavity (33).

7. The dispensing mechanism for electronic components according to claim 6, characterized in that: The side shell (31) is provided with a cap (32) on the side away from the valve body (3).

8. The dispensing mechanism for electronic components according to claim 7, characterized in that: The valve body (3) is equipped with a glue inlet connector (2) on one side, and the glue inlet connector (2) is opposite to the glue cavity (17).

9. The dispensing mechanism for electronic components according to claim 8, characterized in that: The valve body (3) has an air chamber (16) located at the top. The valve body (3) has an air inlet connector (1) connected to the air chamber (16) on one side. A piston (5) is slidably arranged inside the air chamber (16). A spring (9) is installed on the upper surface of the piston (5).

10. A dispensing machine for electronic components, characterized in that, Includes the dispensing mechanism for electronic components as described in any one of claims 1-9.

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