A double-gate glue injection device

Abstract

The utility model discloses a kind of glue injection devices of double glue port, including mounting seat, flow divider and glue injection mold, mounting seat is provided with driving element, the end of driving element is vertically connected with two valve needles, the top of flow divider is provided with first sleeve, the bottom of flow divider is provided with second sleeve;The top of valve needle is connected with driving element, the bottom of valve needle sequentially passes through first sleeve, flow divider and second sleeve;First glue injection runner is arranged in flow divider, second glue injection runner is arranged in second sleeve, second glue injection runner is communicated with first glue injection runner, second glue injection runner is provided with bit core, bit core is sequentially provided with glue liquid containing cavity and glue outlet section from top to bottom, the length of glue outlet section is greater than the stroke length of valve needle.The utility model in valve needle is always moved in bit core, solve the position deviation of traditional glue injection device valve needle, the end of valve needle cannot be set glue injection mold, leading to the problem that valve needle cannot control glue injection amount.

Description

Technical Field

[0001] This utility model relates to the field of glue injection device technology, specifically a glue injection device with two glue outlets. Background Technology

[0002] Traditional dispensing devices typically include a valve needle sleeve to guide and protect the valve needle. During normal operation, a drive unit powers the valve needle in a reciprocating motion. When dispensing is required, the drive unit activates, causing the valve needle to sequentially separate from the dispensing hole and then from the valve needle sleeve. At this point, the adhesive flows out of the dispensing hole, completing the dispensing task according to a predetermined path and quantity.

[0003] Adhesive liquids generally have a certain viscosity, and during the flow process, they will generate a certain fluid pressure and lateral force. At the moment the valve needle separates from the injection hole and the valve needle sleeve, the adhesive liquid exerts a lateral thrust on the end of the valve needle, causing the end of the valve needle to deviate.

[0004] Because the valve needle has deviated from the correct position, it cannot pass smoothly through the valve needle sleeve during its movement toward the injection hole. As a result, the injection hole cannot be accurately sealed, leading to glue leakage. Utility Model Content

[0005] To address the aforementioned shortcomings, this invention proposes a dual-nozzle glue injection device. The nozzle core can restrict the movement direction of the valve needle, and the length of the glue dispensing section is greater than the forming length of the valve needle. This effectively prevents the valve needle from shifting or shaking during the glue injection process, solving the problem in traditional glue injection devices where the valve needle is prone to positional shift and the end of the valve needle cannot pass through the glue injection mold, resulting in the valve needle being unable to control the glue injection volume.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A glue injection device with two glue outlets includes a mounting base, a flow divider plate, and a glue injection mold. The mounting base is provided with a driving component, and two valve needles are vertically connected to the end of the driving component. The two valve needles are arranged side by side.

[0008] The top of the flow divider is provided with a first sleeve, and the bottom of the flow divider is provided with a second sleeve; the top of the valve needle is connected to the drive component, and the bottom of the valve needle passes through the first sleeve, the flow divider, and the second sleeve in sequence.

[0009] The flow divider plate is provided with a first glue injection channel, and the second sleeve is provided with a second glue injection channel. The input end of the first glue injection channel is connected to the outside, and the input end of the second glue injection channel is connected to the output end of the first glue injection channel. The output end of the second glue injection channel is provided with a nozzle. The nozzle is provided with a glue receiving cavity and a glue dispensing section from top to bottom. The glue receiving cavity is used to receive glue, and the glue dispensing section is used to restrict the movement direction of the valve needle. The length of the glue dispensing section is greater than the stroke length of the valve needle.

[0010] The valve needle is used to connect or disconnect the glue injection channel that connects the second sleeve to the glue injection mold.

[0011] The dispensing section has two vertical guide grooves arranged side by side. The valve needle is slidably disposed in the guide groove. The inner wall of the guide groove is tightly connected to the outer wall of the valve needle. The nozzle core is also provided with multiple dispensing grooves. The multiple dispensing grooves are arranged around the outer side of the guide groove. The dispensing grooves are connected to the guide groove.

[0012] The guide groove is used to limit the direction of movement of the valve needle, and the glue outlet groove is used to supply the flow of glue liquid.

[0013] The glue dispensing groove is an irregularly shaped groove, which includes a first sidewall, a second sidewall, and a third sidewall. The first sidewall and the second sidewall are respectively connected to the two ends of the sidewall of the guide groove, and the two ends of the third sidewall are respectively connected to the first sidewall and the second sidewall.

[0014] The distance between the first sidewall and the second sidewall gradually increases from the inside to the outside.

[0015] The inner wall of the nozzle core is provided with a guide body, which is located at the bottom of the nozzle core. The guide body and the nozzle core are integrally formed. The guide groove and the glue dispensing groove are provided on the guide body, and the guide body and the glue dispensing groove vertically penetrate the top and bottom of the guide body.

[0016] The top wall of the guide body is provided with an inner inclined arc surface, a transition arc surface and a conical part from the outside to the inside;

[0017] The inner inclined arc surface slopes from top to bottom toward the center, the conical part is located at the center of the guide body, and the transition arc surface smoothly connects the inner inclined arc surface and the bottom of the conical part.

[0018] The top of the guide groove extends through the transition arc surface, and the top of the dispensing groove extends through the inner inclined arc surface, the transition arc surface, or the conical portion.

[0019] The movable length of the valve needle is less than the length of the guide groove.

[0020] The top of the injection mold is provided with a limiting groove, and the bottom of the limiting groove is provided with two injection holes. The injection holes correspond one-to-one with the valve needle. The second sleeve is provided in the limiting groove. The valve needle moves through the injection hole. The injection hole is connected to the second injection channel. The valve needle is used to open or close the injection hole.

[0021] A gate valve is provided between the second sleeve and the nozzle core, and the gate valve is fixedly connected to the second sleeve and the nozzle core.

[0022] The technical solution of this utility model can include the following beneficial effects:

[0023] 1. The nozzle core can restrict the movement direction of the valve needle, and the length of the dispensing section is greater than the stroke length of the valve needle. The valve needle always moves within the nozzle core, which can effectively prevent the valve needle from shifting or shaking during the dispensing process. This solves the problem in traditional dispensing devices where the valve needle is prone to positional shift and the end of the valve needle cannot pass through the dispensing mold, resulting in the valve needle being unable to control the amount of dispensing.

[0024] 2. It has two valve needles arranged side by side, which can significantly increase the amount of glue injected per unit time in mass production compared with traditional single glue outlet devices. Attached Figure Description

[0025] Figure 1 This is a cross-sectional view of an adhesive dispensing device according to one embodiment of the present invention. Figure 1 ;

[0026] Figure 2 This is a cross-sectional view of an adhesive dispensing device according to one embodiment of the present invention. Figure 2 ;

[0027] Figure 3 This is a cross-sectional view of the nozzle core in one embodiment of this utility model. Figure 1 ;

[0028] Figure 4 This is a cross-sectional view of the nozzle core in one embodiment of this utility model. Figure 2 ;

[0029] Figure 5 yes Figure 1 Enlarged view of point A in the middle;

[0030] The components include: 1. Mounting base; 2. Manifold; 21. First injection channel; 3. Injection mold; 31. Limiting groove; 4. Drive component; 5. Valve needle; 6. First sleeve; 7. Second sleeve; 70. Second injection channel; 71. Nozzle core; 72. Guide groove; 73. Glue outlet groove; 731. First side wall; 732. Second side wall; 733. Third side wall; 74. Guide body; 741. Inner inclined arc surface; 742. Transition arc surface; 743. Conical part; 8. Sprue. Detailed Implementation

[0031] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0032] In the description of this utility model, it should be understood that the terms "length", "middle", "upper", "lower", "left", "right", "top", "bottom", 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 utility model 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 utility model.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "assembly," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] The following is combined Figures 1 to 5 This describes a glue injection device with two glue outlets according to an embodiment of the present invention.

[0036] A glue injection device with two glue outlets includes a mounting base 1, a flow divider 2 and a glue injection mold 3. The mounting base 1 is provided with a driving component 4. Two valve needles 5 are vertically connected to the end of the driving component 4, and the two valve needles 5 are arranged side by side.

[0037] The top of the flow divider 2 is provided with a first sleeve 6, and the bottom of the flow divider 2 is provided with a second sleeve 7; the top of the valve needle 5 is connected to the drive component 4, and the bottom of the valve needle 5 passes through the first sleeve 6, the flow divider 2 and the second sleeve 7 in sequence.

[0038] The flow divider 2 is provided with a first glue injection channel 21, and the second sleeve 7 is provided with a second glue injection channel 70. The input end of the first glue injection channel 21 is connected to the outside, and the input end of the second glue injection channel 70 is connected to the output end of the first glue injection channel 21. The output end of the second glue injection channel 70 is provided with a nozzle 71. The nozzle 71 is provided with a glue receiving cavity and a glue dispensing section from top to bottom. The glue receiving cavity is used to receive glue, and the glue dispensing section is used to restrict the movement direction of the valve needle 5. The length of the glue dispensing section is greater than the stroke length of the valve needle 5.

[0039] The valve needle 5 is used to connect or disconnect the glue injection channel that connects the second sleeve 7 to the glue injection mold 3.

[0040] The drive component 4 is mounted on the mounting base 1, which can provide stable support for the drive component 4 and prevent the valve needle 5 from shaking or shifting when it moves due to lack of stable support.

[0041] The distributor plate 2 is provided with a first glue injection channel 21. The input end is connected to the glue injection system, so that the glue flows into the first glue injection channel 21 from the input end. The output end of the first glue injection channel 21 is connected to the second glue injection channel 70, so that the glue can flow smoothly to the output end of the second glue injection channel 70.

[0042] The valve needle 5 passes sequentially through the first sleeve 6, the flow divider 2, and the second sleeve 7, and is movably mounted on the injection mold 3. When the drive unit 4 is activated, it moves the valve needle 5 upward, causing the valve needle 5 to separate from the injection mold 3. At this time, the second injection channel 70 is connected to the mold cavity inside the injection mold 3, allowing the adhesive to flow from the second injection channel 70 into the mold cavity of the injection mold 3, thereby performing the injection operation.

[0043] After the glue injection is completed, the drive unit 4 is started again. The drive unit 4 drives the valve needle 5 to move downward, so that the end of the valve needle 5 passes through the glue injection mold 3, thereby disconnecting the glue injection channel connecting the second glue injection channel 70 and the mold cavity of the glue injection mold 3, so that the glue liquid stays in the second glue injection channel 70 and stops the glue injection process.

[0044] During this process, the nozzle core 71 can restrict the direction of movement of the valve needle 5, and the length of the nozzle core 71 is greater than the stroke length of the valve needle 5. The valve needle 5 always moves within the nozzle core 71, which can effectively prevent the valve needle 5 from shifting or shaking during the glue injection process. This solves the problem in traditional glue injection devices where the valve needle 5 is prone to positional shift and the end of the valve needle cannot pass through the glue injection mold 3, resulting in the valve needle 5 being unable to control the amount of glue injected.

[0045] In addition, this solution is equipped with two valve needles 5 arranged side by side, which can significantly increase the amount of glue injected per unit time in mass production compared with the traditional single glue port device.

[0046] The dispensing section has two vertical guide grooves 72 arranged side by side. The valve needle 5 is slidably disposed in the guide groove 72. The inner wall of the guide groove 72 is tightly connected to the outer wall of the valve needle 5. The nozzle core 71 is also provided with a plurality of dispensing grooves 73. The plurality of dispensing grooves 73 are arranged around the outer side of the guide groove 72. The dispensing grooves 73 are connected to the guide groove 72.

[0047] The guide groove 72 is used to restrict the movement direction of the valve needle 5, and the glue outlet groove 73 is used to supply the flow of glue liquid.

[0048] The sidewall of the guide groove 72 slides against the valve needle 5, effectively increasing the stability of the valve needle 5's movement. During long-term and frequent glue injection operations, the guide groove 72 can withstand the lateral force generated when the valve needle 5 moves, preventing the valve needle 5 from shifting, bending, or deforming, thus extending the service life of the valve needle 5 and reducing equipment failures and production interruptions caused by damage or shifting of the valve needle 5.

[0049] During the glue injection process, after the glue enters the nozzle core 71 from the second glue injection channel 70, it can be evenly distributed around the valve needle 5 through the glue outlet groove 73 and flow smoothly to the glue injection mold 3, so that the glue can be injected into the mold at a stable speed and uniform pressure.

[0050] The multiple dispensing channels 73 increase the flow cross-sectional area of ​​the adhesive, allowing the adhesive to enter the dispensing mold 3 more quickly through the nozzle core 71, thus shortening the dispensing time and improving dispensing efficiency.

[0051] The glue dispensing groove 73 is an irregularly shaped groove. The glue dispensing groove 73 includes a first side wall 731, a second side wall 732 and a third side wall 733. The first side wall 731 and the second side wall 732 are respectively connected to the two ends of the side wall of the guide groove 72. The two ends of the third side wall 733 are respectively connected to the first side wall 731 and the second side wall 732.

[0052] The distance between the first sidewall 731 and the second sidewall 732 gradually increases from the inside to the outside.

[0053] The first sidewall 731 and the second sidewall 732 are respectively connected to the sidewall of the guide groove 72, forming a smooth transition path from the guide groove 72 to the dispensing groove 73, avoiding the flow obstruction of adhesive caused by traditional right-angle or abrupt connections. Compared with the traditional equal-diameter dispensing groove 73, the structure of the gradually increasing distance between the first sidewall 731 and the second sidewall 732 from the inside to the outside allows the adhesive to gradually expand its space during flow, effectively reducing flow resistance and turbulence and eddies in the dispensing groove 73, ensuring that the adhesive is delivered to the dispensing mold 3 at a stable flow rate and direction.

[0054] The distance between the first sidewall 731 and the second sidewall 732 gradually increases from the inside to the outside, forming a gradient structure similar to a trumpet mouth. This allows the glue outlet 73 to have a larger space to accommodate more glue and reduces uneven glue injection caused by excessive instantaneous flow.

[0055] The inner wall of the nozzle core 71 is provided with a guide body 74, which is located at the bottom of the nozzle core 71. The guide body 74 and the nozzle core 71 are integrally formed. The guide groove 72 and the glue dispensing groove 73 are provided on the guide body 74, and the guide body 74 and the glue dispensing groove 73 vertically penetrate the top and bottom of the guide body 74.

[0056] The top wall of the guide body 74 is provided with an inner inclined arc surface 741, a transition arc surface 742 and a conical part 743 from the outside to the inside.

[0057] The inner inclined arc surface 741 is inclined from top to bottom towards the center, the conical part 743 is disposed at the center of the guide body 74, and the transition arc smoothly connects the inner inclined arc surface 741 and the bottom of the conical part 743.

[0058] The guide body 74 and the nozzle core 71 are made in one piece, which not only completely eliminates the assembly gap and connection error of the split structure, but also greatly improves the rigidity and strength of the overall structure; it also prevents the glue from leaking from the splice gap, reducing equipment pollution and material waste caused by leakage.

[0059] The inner inclined arc surface 741 of the top wall of the guide body 74 slopes from top to bottom towards the center, which can actively guide the adhesive to converge towards the center and avoid the adhesive from stagnating at the top edge of the guide body 74. This is especially suitable for low viscosity adhesives and can reduce the phenomenon of adhesive sticking to the wall due to surface tension. The transition arc surface 742 eliminates the right angle or acute angle dead angle between the inner inclined arc surface 741 and the conical part 743 through a smooth connection, allowing the adhesive to flow smoothly along the arc surface and reducing flow resistance. The conical part 743 is located in the center and can further guide the converged adhesive to the dispensing groove 73 and the guide groove 72 below, forming a continuous path of "convergence-guidance-output" and reducing turbulence and pressure loss.

[0060] The top of the guide groove 72 extends through the transition arc surface 742, and the top of the glue outlet groove 73 extends through the inner inclined arc surface 741, the transition arc surface 742, or the conical portion 743.

[0061] The top of the guide groove 72 extends through the transition arc surface 742, allowing the adhesive to directly enter the guide groove 72 after being guided and gathered by the transition arc surface 742, thus avoiding the retention or impact of the adhesive at the inlet of the tank in the traditional structure.

[0062] Depending on its position, the top of the glue dispensing trough 73 can receive glue from different areas by penetrating the inner inclined arc surface 741, the transition arc surface 742, or the conical part 743. The inner inclined arc surface 741 can receive glue that has diffused from the edge area, the transition arc surface 742 can receive glue that has converged in the middle, and the conical part 743 can directly obtain glue that has focused in the center. This ensures that each glue dispensing trough 73 can efficiently obtain glue source, thereby improving the overall glue delivery efficiency.

[0063] The movable length of the valve needle 5 is less than the length of the guide groove 72.

[0064] During the glue injection process, when glue injection needs to be started, the drive unit 4 pushes the valve needle 5 to move accurately to the open position in the guide groove 72, so that the glue can pass smoothly through the glue injection port; when glue injection needs to be stopped, the valve needle 5 can quickly and accurately return to the closed position, effectively blocking the flow of glue.

[0065] Since the movable length of the valve needle 5 is less than the length of the guide groove 72, the end of the valve needle 5 is always in sliding contact with the inner wall of the guide groove 72, thus avoiding problems such as delayed glue injection or leakage caused by excessive movement range of the valve needle 5.

[0066] The top of the injection mold 3 is provided with a limiting groove 31, and the bottom of the limiting groove 31 is provided with two injection holes. The injection holes correspond one-to-one with the valve needle 5. The second sleeve 7 is provided in the limiting groove 31. The valve needle 5 movably passes through the injection hole. The injection hole is connected to the second injection channel 70. The valve needle 5 is used to open or close the injection hole.

[0067] The limiting groove 31 provides a precise installation reference for the second sleeve 7, enabling the second sleeve 7 to be quickly and accurately embedded into the top of the mold, ensuring that the second injection channel 70 inside the second sleeve 7 is precisely aligned with the injection hole at the bottom of the limiting groove 31.

[0068] The inner wall of the guide groove 72 is always in sliding contact with the valve needle 5, which restricts the degree of freedom of the valve needle 5 in the horizontal direction, ensuring that the valve needle 5 can close the injection hole during each descent, and avoids deflection caused by factors such as equipment vibration and glue pressure fluctuation.

[0069] A gate valve 8 is provided between the second sleeve 7 and the nozzle core 71, and the gate valve 8 is fixedly connected to the second sleeve 7 and the nozzle core 71.

[0070] The gate 8 serves as an intermediate connector, which can form a rigid whole between the second sleeve 7 and the nozzle core 71, avoiding the loosening problem caused by assembly errors or long-term vibration in the traditional direct connection method.

[0071] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A glue dispensing device with two glue outlets, characterized in that, It includes a mounting base, a flow divider, and an injection mold. The mounting base is equipped with a driving component, and two valve needles are vertically connected to the end of the driving component. The two valve needles are arranged side by side. The top of the flow divider is provided with a first sleeve, and the bottom of the flow divider is provided with a second sleeve; the top of the valve needle is connected to the drive component, and the bottom of the valve needle passes through the first sleeve, the flow divider, and the second sleeve in sequence. The flow divider plate is provided with a first glue injection channel, and the second sleeve is provided with a second glue injection channel. The input end of the first glue injection channel is connected to the outside, and the input end of the second glue injection channel is connected to the output end of the first glue injection channel. The output end of the second glue injection channel is provided with a nozzle. The nozzle is provided with a glue receiving cavity and a glue dispensing section from top to bottom. The glue receiving cavity is used to receive glue, and the glue dispensing section is used to restrict the movement direction of the valve needle. The length of the glue dispensing section is greater than the stroke length of the valve needle. The valve needle is used to connect or disconnect the glue injection channel that connects the second sleeve to the glue injection mold.

2. The glue dispensing device with dual glue outlets according to claim 1, characterized in that, The dispensing section has two vertical guide grooves arranged side by side. The valve needle is slidably disposed in the guide groove. The inner wall of the guide groove is tightly connected to the outer wall of the valve needle. The nozzle core is also provided with multiple dispensing grooves. The multiple dispensing grooves are arranged around the outer side of the guide groove. The dispensing grooves are connected to the guide groove. The guide groove is used to limit the direction of movement of the valve needle, and the glue outlet groove is used to supply the flow of glue liquid.

3. The glue dispensing device with dual glue outlets according to claim 2, characterized in that, The glue dispensing groove is an irregularly shaped groove, which includes a first sidewall, a second sidewall, and a third sidewall. The first sidewall and the second sidewall are respectively connected to the two ends of the sidewall of the guide groove, and the two ends of the third sidewall are respectively connected to the first sidewall and the second sidewall. The distance between the first sidewall and the second sidewall gradually increases from the inside to the outside.

4. The glue dispensing device with dual glue outlets according to claim 3, characterized in that, The inner wall of the nozzle core is provided with a guide body, which is located at the bottom of the nozzle core. The guide body and the nozzle core are integrally formed. The guide groove and the glue dispensing groove are provided on the guide body, and the guide body and the glue dispensing groove vertically penetrate the top and bottom of the guide body. The top wall of the guide body is provided with an inner inclined arc surface, a transition arc surface and a conical part from the outside to the inside; The inner inclined arc surface slopes from top to bottom toward the center, the conical part is located at the center of the guide body, and the transition arc surface smoothly connects the inner inclined arc surface and the bottom of the conical part.

5. The glue dispensing device with dual glue outlets according to claim 4, characterized in that, The top of the guide groove extends through the transition arc surface, and the top of the dispensing groove extends through the inner inclined arc surface, the transition arc surface, or the conical portion.

6. The glue dispensing device with dual glue outlets according to claim 2, characterized in that, The movable length of the valve needle is less than the length of the guide groove.

7. The glue dispensing device with dual glue outlets according to claim 5, characterized in that, The top of the injection mold is provided with a limiting groove, and the bottom of the limiting groove is provided with two injection holes. The injection holes correspond one-to-one with the valve needle. The second sleeve is provided in the limiting groove. The valve needle moves through the injection hole. The injection hole is connected to the second injection channel. The valve needle is used to open or close the injection hole.

8. The glue dispensing device with dual glue outlets according to claim 4, characterized in that, A gate valve is provided between the second sleeve and the nozzle core, and the gate valve is fixedly connected to the second sleeve and the nozzle core.

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