An LED strip dispensing valve mechanism

Abstract

This invention belongs to the field of dispensing valve technology, specifically an LED light strip dispensing valve mechanism. It includes a front guide shaft and a rear guide shaft, which are horizontally coaxial and connected with damping rotation. It also includes vertically arranged front and rear dispensing needles, which are respectively connected to the inner cavities of the front and rear guide shafts. When assembled, the front and rear dispensing needles are parallel and fitted together. Furthermore, it includes a base with a movable cavity for the front and rear guide shafts to rotate around a fixed axis. The bottom surface of the movable cavity has a clearance window to avoid the front and rear dispensing needles. The base also has a glue inlet module for supplying glue to the inner cavity of the front guide shaft. This invention, through the expandable or merging front and rear dispensing needles, enables simultaneous dispensing of two adhesives, avoiding the poor product quality problems caused by the defects of traditional dispensing valves.

Description

Technical Field

[0001] This invention relates to the field of dispensing valve technology, and in particular to an LED light strip dispensing valve mechanism. Background Technology

[0002] A dispensing machine is an automated device used to apply fluids drop by drop onto products. Applicable fluids include adhesives, solid glues, paints, conductive glues, AB glues, polyurethane glues, etc. The dispensing valve is one of the important components of a dispensing machine, used to control the output of the fluid. The performance of the dispensing valve directly affects the dispensing accuracy of the dispensing machine.

[0003] In the manufacturing process of LED light strips, one of the steps is to seal the LED beads on the light strip with glue. Currently, most of the existing dispensing equipment uses a fixed dispensing valve, with only one dispensing port to seal the LED beads along the light strip. However, this single dispensing method is prone to horizontal wavy edges on both sides of the glue due to the large width of the glue. Therefore, it is necessary to pre-set a smaller width of glue on both sides of the LED beads. However, since the distance between the two glues is very small, in order to match this distance, the current industry practice is to use two dispensing valves that are staggered and placed side by side to set two glues separately.

[0004] However, traditional dispensing valves are relatively large, and their staggered arrangement further increases the distance between the dispensing nozzles. This prevents the front ends of the two dispensing nozzles from adhering to the LED strip simultaneously, resulting in uneven cooling of the dispensing on both sides of the same point on the LED strip. Consequently, the filler dispensing in the middle of the LED strip may have an asymmetrical contact interface with the dispensing on both sides, affecting the product's appearance and quality. Moreover, this staggered dispensing nozzle structure also increases the difficulty of dispensing control. Therefore, it is necessary to improve the existing technology. Summary of the Invention

[0005] The purpose of this invention is to provide an LED light strip dispensing valve mechanism to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an LED light strip dispensing valve mechanism, comprising a front guide shaft tube and a rear guide shaft tube, wherein the front guide shaft tube and the rear guide shaft tube are horizontally coaxially connected with damping rotation;

[0007] It also includes a vertically arranged front dispensing needle and a rear dispensing needle, which are respectively connected to the inner cavities of the front guide shaft tube and the rear guide shaft tube. When assembled, the front dispensing needle and the rear dispensing needle are parallel and attached together.

[0008] It also includes a base, the base having a movable cavity for the front guide shaft tube and the rear guide shaft tube to rotate around a fixed axis, and the bottom surface of the movable cavity having a clearance window to avoid the front dispensing needle and the rear dispensing needle;

[0009] The base is provided with a glue-feeding module for supplying glue to the inner cavity of the front guide shaft tube.

[0010] The LED light strip dispensing valve mechanism of the present invention further includes a synchronous drive module for driving the front guide shaft tube and the rear guide shaft tube to rotate synchronously in opposite directions.

[0011] The LED strip dispensing valve mechanism of the present invention includes a synchronous drive module comprising a front rack and a rear rack, a synchronous gear for driving the front rack and the rear rack to move synchronously in opposite directions, and a first motor for driving the synchronous gear to rotate; both the outer walls of the front guide shaft tube and the rear guide shaft tube are coaxially provided with annular meshing parts, and the front rack and the rear rack respectively mesh with the two annular meshing parts.

[0012] The LED strip dispensing valve mechanism of the present invention includes a synchronous drive module disposed above the front guide shaft tube; a synchronous gear is located between the front rack and the rear rack, and guide grooves adapted to the synchronous gear are provided along the length direction on the opposite side walls of the front rack and the rear rack, and a strip-shaped meshing part that meshes with the synchronous gear is provided on the vertical inner wall of the guide groove.

[0013] The LED strip dispensing valve mechanism of the present invention includes a base comprising a front guide seat and a rear mounting seat that are horizontally opposite each other. The front guide seat and the rear mounting seat are respectively provided with two mounting grooves on their opposite side walls that are adapted to the fixed axis of the front guide shaft tube and the rear guide shaft tube. The bottom surfaces of the adjacent ends of the two mounting grooves are provided with notches facing each other. The two mounting grooves enclose the movable cavity, and the two notches enclose the clearance window.

[0014] The LED strip dispensing valve mechanism of the present invention includes a front guide seat and a rear mounting seat that are detachably connected in the front-rear direction. When assembled, the rear mounting seat coaxially abuts the rear guide shaft tube against the front guide shaft tube.

[0015] The LED strip dispensing valve mechanism of the present invention includes a dispensing module comprising a horizontal flow channel coaxially connected to the front guide shaft tube, a vertical flow channel perpendicularly connected to the horizontal flow channel, a dispensing flow channel obliquely connected to the vertical flow channel, a dispensing screw disposed in the vertical flow channel, and a second motor for driving the dispensing screw to rotate; the vertical flow channel is located above the horizontal flow channel and is disposed within the front guide seat, the end of the dispensing flow channel away from the vertical flow channel penetrates the upper surface of the front guide seat, and the second motor is located at the upper end of the front guide seat.

[0016] The LED strip dispensing valve mechanism of the present invention includes a sealing part at one end of the rear guide shaft tube facing the front guide shaft tube, and a connecting shaft adapted to the inner cavity of the front guide shaft tube protruding from the end of the sealing part away from the rear guide shaft tube; a drainage groove communicating with its inner cavity is provided on the side wall of the connecting shaft away from the rear dispensing needle, and a guide groove parallel to the drainage groove is provided on the inner wall of the front guide shaft tube; when the rear guide shaft tube is rotated to the position, the drainage groove and the inner cavity of the front guide shaft tube are connected through the guide groove.

[0017] The LED light strip dispensing valve mechanism of the present invention includes multiple guide grooves that are evenly arranged along the circumferential direction of the rear guide shaft tube.

[0018] The LED strip dispensing valve mechanism of the present invention includes a receiving groove on the end face of the connecting shaft extending into the front guide shaft tube. There are two receiving grooves, which are opposite to each other and penetrate the side wall of the connecting shaft. A fastening member parallel to the connecting shaft is provided on the inner wall of the receiving groove perpendicular to the connecting shaft. The end of the fastening member away from the axis of the connecting shaft is provided with a protruding fastener extending out of the receiving groove. The inner wall of the front guide shaft tube is provided with an arc-shaped groove circumferentially for the protruding fastener to move.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: By adjusting the rotation angle of the front guide tube and the rear guide tube, the front dispensing needle and the rear dispensing needle can be separated or closed and maintained at a certain angle. When the angle is zero, the glue from the two dispensing points can be merged into one glue dispensing point. When the angle is not zero, the two glues can be dispensed synchronously. When the two glues can be dispensed, the glue adhering to the light strip can be discharged from the two dispensing needles at the same time, and the degree of solidification of the glue is kept synchronous and consistent, thereby ensuring the appearance and quality of the product. Moreover, the dispensing method of the two glues only needs to be achieved through a single dispensing valve, which is more conducive to glue control. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 It is a front view of the present invention.

[0022] Figure 2 for Figure 1 AA section view in the image.

[0023] Figure 3 for Figure 2 Enlarged view of the front guide shaft tube and the rear guide shaft tube.

[0024] Figure 4 for Figure 3 The diagram shows the front and rear guide shaft tubes.

[0025] Figure 5 This is a front view of the rear-mounted guide shaft tube of the present invention.

[0026] Figure 6 for Figure 5 Enlarged view of the location of the fastener in the middle card.

[0027] Figure 7 for Figure 1 BB section view in the middle.

[0028] Figure 8 for Figure 7 Enlarged view of a local structure.

[0029] Figure 9 This is a side view of the present invention.

[0030] Figure 10 It is a top view of the present invention. Detailed Implementation

[0031] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0032] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute a separate or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0033] "Multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0034] Furthermore, the terms indicating orientation, such as "up," "down," "left," "right," "upper end," "lower end," and "longitudinal," are all based on the posture and position of the device or equipment described in this solution during normal use.

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the protection scope of the present invention.

[0036] This embodiment discloses, as follows: Figures 1 to 10 The LED strip dispensing valve mechanism shown includes a front guide tube 10 and a rear guide tube 20. The front guide tube 10 and the rear guide tube 20 are horizontally coaxially damped and rotatably connected, which allows them to maintain a certain arc state during coaxial rotation. The inner cavity of the front guide tube 10 extends through both ends, while the inner cavity of the rear guide tube 20 extends through only one end near the front guide tube 10 and communicates with the front guide tube 10.

[0037] This mechanism also includes a vertically arranged front dispensing needle 30 and a rear dispensing needle 40. The front dispensing needle 30 and the rear dispensing needle 40 are vertically connected to the inner cavities of the front guide shaft tube 10 and the rear guide shaft tube 20, respectively. When assembled, the front dispensing needle 30 and the rear dispensing needle 40 are parallel and fitted together. Specifically, the cross-sections of both the front dispensing needle 30 and the rear dispensing needle 40 are semi-circular, and when closed, they form a cylindrical structure. Alternatively, the shape can be designed as a prism. Furthermore, the front dispensing needle 30 and the rear dispensing needle 40 are integrally formed with the front guide shaft tube 10 and the rear guide shaft tube 20, respectively.

[0038] This mechanism also includes a base 50, within which is a movable cavity 501 for the front guide shaft tube 10 and the rear guide shaft tube 20 to rotate around a fixed axis. The bottom surface of the movable cavity 501 has a clearance window 502 to allow the front dispensing needle 30 and the rear dispensing needle 40 to pass through. The clearance window 502 facilitates adjustment of the included angle between the front dispensing needle 30 and the rear dispensing needle 40, while the movable cavity 501 maintains the stable rotation of the front guide shaft tube 10 and the rear guide shaft tube 20. After assembly, the front guide shaft tube 10 and the rear guide shaft tube 20 slide against the inner walls of the two movable cavities 501 with damping, further facilitating the positioning and holding of the dispensing needles.

[0039] Furthermore, by setting a rotary drive mechanism (not shown) on the top of the base 50, the width of the adhesive strip can be changed by adjusting the left and right tilt of the parallel direction of the front dispensing needle 30 and the rear dispensing needle 40. That is, when the front dispensing needle 30 and the rear dispensing needle 40 are parallel in a straight line in the left and right direction, the width of the output adhesive strip is the sum of the widths of the two adhesive strips output from the two outlets of the front dispensing needle 30 and the rear dispensing needle 40. When the parallel direction forms an angle with the aforementioned straight line in the horizontal direction, the width of the output adhesive strip will decrease, with the minimum width being the left and right width of either the front dispensing needle 30 or the rear dispensing needle 40.

[0040] The base 50 is provided with a glue injection module 60 for supplying glue to the inner cavity of the front guide shaft tube 10. The glue injection module 60 can be located on the front or upper side of the base 50, and is preferably located on the upper part of the base 50.

[0041] During operation, by adjusting the rotation angle between the front guide tube 10 and the rear guide tube 20, the front dispensing needle 30 and the rear dispensing needle 40 can be separated or closed and maintained at a certain angle. When the angle is zero, one stream of glue can be dispensed; when the angle is not zero, two streams of glue can be dispensed simultaneously. Maintaining the state of dispensing two streams of glue ensures that the glue adhering to the light strip flows out from both dispensing needles at the same time, maintaining a consistent degree of glue solidification. This ensures the product's appearance and quality and facilitates synchronized control of the initial glue dispensing stage and the later glue collection stage.

[0042] In this embodiment, the mechanism further includes a synchronous drive module 70 that drives the front guide shaft tube 10 and the rear guide shaft tube 20 to rotate synchronously in opposite directions. This facilitates automatic adjustment of the deflection angles of the front guide shaft tube 10 and the rear guide shaft tube 20, thereby allowing the system to adjust the included angle between the front dispensing needle 30 and the rear dispensing needle 40 as needed. Of course, one synchronous drive module 70 can be used to synchronously drive the front guide shaft tube 10 and the rear guide shaft tube 20 in opposite directions, or two modules can be used to synchronously drive the front guide shaft tube 10 and the rear guide shaft tube 20 respectively, depending on the actual needs.

[0043] When selecting the two synchronous drive modules 70, additional functionality can be achieved. One dispensing needle can be retracted and blocked, while the other dispensing needle moves to an inclined angle. This inclined state can be used to dispense glue to horizontal or inclined dispensing slots. Compared to the traditional method of using an additional deflection module to tilt the entire dispensing valve, the method provided in this embodiment offers higher control precision and a smaller size. Of course, the two dispensing needles can also be aligned side-by-side and adjusted synchronously to increase the dispensing volume beyond what has been described above.

[0044] Preferably, this embodiment uses only one synchronous drive module 70. Specifically, the synchronous drive module 70 includes a front rack 71 and a rear rack 72, a synchronous gear 73 that drives the front rack 71 and the rear rack 72 to move synchronously in opposite directions, and a first motor 74 that drives the synchronous gear 73 to rotate. Both the front guide shaft tube 10 and the rear guide shaft tube 20 have coaxially arranged annular meshing portions 80 on their outer side walls. The front rack 71 and the rear rack 72 respectively mesh with the two annular meshing portions 80 to achieve meshing drive of the front guide shaft tube 10 and the rear guide shaft tube 20.

[0045] The synchronous drive module 70 is located above the front guide shaft tube 10. The synchronous gear 73 is located between the front rack 71 and the rear rack 72. The opposite side walls of the front rack 71 and the rear rack 72 are provided with guide grooves 90 adapted to the synchronous gear along the length direction. The vertical inner wall of the guide groove 90 is provided with a strip-shaped meshing part 91 that meshes with the synchronous gear 73. Through the synchronous meshing of the synchronous gear 73 with the front rack 71 and the rear rack 72, the synchronous reverse movement of the front rack 71 and the rear rack 72 is achieved, thereby driving the front guide shaft tube 10 and the rear guide shaft tube 20 to rotate in opposite directions. At the same time, when the synchronous gear 73 rotates in the opposite direction, the tooth grooves on the left and right sides cancel out the space between the front rack 71 and the rear rack 72, thus ensuring the synchronicity of the front rack 71 and the rear rack 72. This directly avoids the accumulation of time errors in rack and pinion transmission and further ensures the long-term accuracy of dispensing.

[0046] Furthermore, the guide groove 90 can ensure the horizontal consistency between the front rack 71 and the rear rack 72 and the synchronous gear 73, and avoid the relative displacement of the front rack 71 and the rear rack 72 with the annular meshing part 80 in the longitudinal direction, which would lead to a decrease in transmission accuracy.

[0047] In addition, the rack and pinion drive method has another advantage, which is that it is easy to set up multiple front guide shaft tubes and rear guide shaft tubes along the length of the rack, thereby realizing the dispensing process of multiple rows of light strips and further improving processing efficiency.

[0048] In this embodiment, the base 50 includes a front guide seat 51 and a rear mounting seat 52 that are horizontally opposite each other. The front guide seat 51 and the rear mounting seat 52 each have two mounting grooves 503 on their opposite sidewalls, which are adapted to the fixed axis of the front guide shaft tube 10 and the rear guide shaft tube 20, respectively. Both mounting grooves 503 are cylindrical. The bottom surfaces of adjacent ends of the two mounting grooves 503 each have notches 504 facing each other. The two mounting grooves 503 enclose a movable cavity 501, and the two notches 504 enclose a clearance window 502. This facilitates the installation and removal of the front guide seat 51 and the rear mounting seat 52 for the front guide shaft tube 10 and the rear guide shaft tube 20, and is more conducive to later maintenance.

[0049] Specifically, the rear mounting base 52 is horizontally L-shaped, and the front guide seat 51 can be cubic in shape with a recessed step 511 at the lower end of its rear sidewall, which corresponds to the longitudinal end 521 of the rear mounting base 52. The mounting groove 503 on the front guide seat 51 is located on the vertical sidewall 5110 of the recessed step 511, and the mounting groove 503 on the rear mounting base 52 is located on the vertical sidewall 5210 of the longitudinal end 521. After assembly, the outer sidewall of the longitudinal end 521 of the rear mounting base 52 is flush with the sidewall of the front guide seat 51, while the inner sidewall of the transverse end 522 is tightly attached to the side end face of the front guide seat 51.

[0050] Correspondingly, the first motor 74 and the synchronous gear 73 are both located inside the transverse end 522 of the rear mounting base 52, while the rear rack 72 is also located inside the rear mounting base 52 and parallel to its longitudinal end 521, with both ends penetrating the opposing sidewalls of the longitudinal end 521 and the transverse end 522 of the front mounting base, respectively. One end of the front rack 71 is located inside the transverse end 522, and the other end extends into the front guide seat 51 and penetrates its left and right sidewalls. The mounting grooves 503 in the front guide seat 51 and the rear mounting base 52 are directly connected to the two chambers 100 inside them that allow the front rack 71 and the rear rack 72 to reciprocate, so that after installation, the front rack 71 and the rear rack 72 can mesh with the front guide shaft tube 10 and the rear guide shaft tube 20, respectively, for driving.

[0051] In this embodiment, the front guide seat 51 and the rear mounting seat 52 are detachably connected in the front-to-back direction. When assembled, the rear mounting seat 52 coaxially presses the rear guide shaft tube 20 against the front guide shaft tube 10 to ensure sealing while also providing damping force for the coaxial rotation of the rear guide shaft tube 20 and the relative rotation of the front guide shaft tube 10, so that the two dispensing needles can be kept at a suitable tilt angle during adjustment.

[0052] In this embodiment, the glue injection module 60 includes a horizontal flow channel 61 coaxially connected to the front guide shaft tube 10, a vertical flow channel 62 perpendicularly connected to the horizontal flow channel 61, a glue injection flow channel 63 obliquely connected to the vertical flow channel 62, a glue injection screw 64 disposed in the vertical flow channel 62, and a second motor 65 driving the glue injection screw 64 to rotate; the vertical flow channel 62 is located above the horizontal flow channel 61 and both are disposed in the front guide seat 51, and the ends of the glue injection flow channel 63 and the vertical flow channel 62 away from the vertical flow channel 62 both penetrate through the front guide seat. The upper surface of 51 is used to connect the glue inlet tube; while the second motor 65 is located at the upper end of the front guide seat 51 to drive the glue inlet screw 64 in the vertical straight channel 62 to rotate forward and backward. After installation, the glue inlet screw 64 is located below the outlet of the glue inlet channel 63. When the glue inlet screw 64 rotates, it presses the glue into the horizontal channel 61 and into the front guide shaft tube 10 and squeezes it out through the glue dispensing needle. When the glue inlet screw 64 reverses, it draws back the glue dispensing needle and the glue in the horizontal channel 61, thereby stopping the glue dispensing and preventing glue dripping.

[0053] Furthermore, to better coordinate with the back-suction operation of the glue-feeding screw 601, a piston 601 that can move up and down is provided at the upper part of the vertical flow channel 62. The piston 601 is slidably sleeved on the upper smooth part 641 of the glue-feeding screw 64. When the glue-feeding screw 64 achieves back-suction of glue, the piston 601 moves upward, and when the glue-feeding screw 64 squeezes the glue downward, the piston 601 relies on its own weight to squeeze the glue downward into the horizontal flow channel. In order to ensure the normal downward movement of the piston, a spring 602 can be provided on the upper side of the piston to assist in its reset.

[0054] In this embodiment, a sealing part 201 is provided at one end of the rear guide shaft tube 20 facing the front guide shaft tube 10 to seal the inner opening of the rear guide shaft tube 20, thereby isolating the inner cavities of the front guide shaft tube 10 and the rear guide shaft tube 20. A connecting shaft 120, adapted to the inner cavity of the front guide shaft tube 10, protrudes from the end of the sealing part 201 away from the rear guide shaft tube 20. After assembly, the outer wall of the connecting shaft 120 slides against the inner wall of the front guide shaft tube 10, enabling synchronous rotation with the rear guide shaft tube 20. A drainage groove 121, communicating with the inner cavity of the connecting shaft 120, is axially provided on the side wall of the connecting shaft 120 away from the rear dispensing needle 40; that is, the drainage groove 121 is located on the upper side wall of the connecting shaft 120. On the inner wall of the front guide shaft tube 10, there is a guide groove 102 parallel to the guide groove 121. When the rear guide shaft tube 20 is rotated into position, the adjacent ends of the guide groove 121 and the guide groove 102 overlap, and the guide groove 121 and the inner cavity of the front guide shaft tube 10 are connected through the guide groove 102, so that the glue in the front guide shaft tube 10 enters the rear guide shaft tube 20, thereby realizing the synchronous glue dispensing of the front glue dispensing needle 30 and the rear glue dispensing needle 40. When the rear guide shaft tube 20 is rotated to other positions, the guide groove 102 is misaligned with the adjacent end of the guide groove 121, thereby cutting off the glue dispensing of the rear glue dispensing needle 40, so that only the front glue dispensing needle 30 dispenses glue. In the actual processing, the method of dispensing glue with one glue dispensing needle or dispensing glue with two glue dispensing needles simultaneously can be selected according to different needs, which can adapt to more production needs.

[0055] Specifically, when the front dispensing needle 30 and the rear dispensing needle 40 are both vertical and side by side, the flow channel 121 and the flow guide 102 are staggered, and the glue is dispensed only through the front dispensing needle 30. When the front flow guide tube 10 and the rear flow guide tube 20 are rotated relative to each other by a certain arc, the flow channel 121 on the connecting shaft 120 is aligned with the flow guide 102 and connected. At this time, the distance between the outlets of the front dispensing needle 30 and the rear dispensing needle 40 reaches the set distance. When the glue enters the two dispensing needles simultaneously through the front flow guide tube 10 and the rear flow guide tube 20 and flows out, the two glues are dispensed synchronously with a certain distance. This allows for synchronous dispensing or individual dispensing at different angles under the synchronous drive of the second motor 65, making it easier for operators to switch between different modes and processes, greatly facilitating processing and production.

[0056] In order to accommodate the need for adjustment of multiple different spacings, the guide channel 102 is provided with multiple channels and is evenly arranged along the circumference of the rear guide shaft tube 20. When the front guide shaft tube 10 and the rear guide shaft tube 20 are rotated in opposite directions to the preset position, the guide channel 121 can be connected with the guide channel 102 at the corresponding position, so that the glue in the front guide shaft tube 10 enters the rear guide shaft tube 20 and is discharged through the rear glue dispensing needle 40, thereby realizing the adjustment of the spacing between the two glues and realizing the functions of multi-angle shape change and multi-mode dispensing.

[0057] In this embodiment, a receiving groove 130 is provided on the end face of the connecting shaft 120 that extends into the front guide shaft tube 10. There are two receiving grooves 130 that are opposite each other. The receiving grooves 130 penetrate the side wall of the connecting shaft 120. A fastening member 140 parallel to the connecting shaft 120 is provided on the inner wall of the receiving groove 130 that is perpendicular to the connecting shaft 120. The fastening member, the sealing part, and the connecting shaft are all integrally connected to the rear guide shaft tube. The fastening member can bend towards the axis of the connecting shaft to achieve a certain resettable deformation function. The end of the fastener 140 opposite to the axis of the connecting shaft 120 is provided with a protruding fastener 131 extending out of the receiving groove 130. The inner wall of the front guide shaft tube 10 is provided with an arc-shaped groove 103 for the protruding fastener 131 to move around. During assembly, the connecting shaft 120 is inserted into the front guide shaft tube 10 and the protruding fastener 131 is engaged in the arc-shaped groove 103, thereby realizing the coaxial rotational connection between the front guide shaft tube 10 and the rear guide shaft tube 20, so as to facilitate the integrated assembly and disassembly. In order to facilitate the disassembly of the front guide shaft tube 10 and the rear guide shaft tube 20, a groove 141 for easy operation can be provided on the end face of the fastener 140. During disassembly, the tool is inserted into the front guide shaft tube 10 and inserted into the groove 141. At this time, the protruding fastener 131 on the fastener 140 can be moved out of the arc-shaped groove 103 by force, thereby realizing disassembly and separation.

[0058] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An LED light strip dispensing valve mechanism, characterized in that, It includes a front guide shaft tube and a rear guide shaft tube, wherein the front guide shaft tube and the rear guide shaft tube are horizontally coaxially damped and rotatably connected; It also includes a vertically arranged front dispensing needle and a rear dispensing needle, which are respectively connected to the inner cavities of the front guide shaft tube and the rear guide shaft tube. When assembled, the front dispensing needle and the rear dispensing needle are parallel and attached together. It also includes a base, the base having a movable cavity for the front guide shaft tube and the rear guide shaft tube to rotate around a fixed axis, and the bottom surface of the movable cavity having a clearance window to avoid the front dispensing needle and the rear dispensing needle; The base is provided with a glue injection module for supplying glue to the inner cavity of the front guide shaft tube. The rear guide tube has a sealing part at one end facing the front guide tube. The sealing part, away from the rear guide tube, has a connecting shaft protruding from one end that fits the inner cavity of the front guide tube. The connecting shaft has an axially oriented drainage groove communicating with its inner cavity on its side wall away from the rear dispensing needle. The inner wall of the front guide tube has a drainage groove parallel to the drainage groove. When the rear guide tube is rotated to its final position, the drainage groove and the inner cavity of the front guide tube are connected through the drainage groove. The drainage groove is provided with… Multiple accommodating grooves are evenly arranged along the circumference of the rear guide shaft tube; the end face of the connecting shaft extending into the front guide shaft tube is provided with a receiving groove, there are two receiving grooves and they are opposite each other. The receiving grooves penetrate the side wall of the connecting shaft. The inner wall of the receiving groove perpendicular to the connecting shaft is provided with a fastening member parallel to the connecting shaft. The end of the fastening member away from the axis of the connecting shaft is provided with a protruding fastener extending out of the receiving groove. The inner wall of the front guide shaft tube is provided with an arc-shaped groove in the circumferential direction for the protruding fastener to move.

2. The LED strip dispensing valve mechanism according to claim 1, characterized in that, The LED light strip dispensing valve mechanism also includes a synchronous drive module that drives the front guide shaft tube and the rear guide shaft tube to rotate synchronously in opposite directions.

3. The LED strip dispensing valve mechanism according to claim 2, characterized in that, The synchronous drive module includes a front rack and a rear rack, a synchronous gear that drives the front rack and the rear rack to move synchronously in opposite directions, and a first motor that drives the synchronous gear to rotate; the outer walls of the front guide shaft tube and the rear guide shaft tube are coaxially provided with annular meshing parts, and the front rack and the rear rack respectively mesh with the two annular meshing parts.

4. The LED strip dispensing valve mechanism according to claim 3, characterized in that, The synchronous drive module is located above the front guide shaft tube; the synchronous gear is located between the front rack and the rear rack, and the opposite sidewalls of the front rack and the rear rack are provided with guide grooves adapted to the synchronous gear along the length direction, and the vertical inner wall of the guide groove is provided with a strip-shaped meshing part that meshes with the synchronous gear.

5. The LED strip dispensing valve mechanism according to claim 4, characterized in that, The base includes a front guide seat and a rear mounting seat that are horizontally opposite each other. The front guide seat and the rear mounting seat are respectively provided with two mounting grooves on their opposite side walls, which are adapted to the fixed axis of the front guide shaft tube and the rear guide shaft tube. The bottom surfaces of the adjacent ends of the two mounting grooves are provided with notches facing each other. The two mounting grooves enclose the movable cavity, and the two notches enclose the avoidance window.

6. The LED strip dispensing valve mechanism according to claim 5, characterized in that, The front guide seat and the rear mounting seat are detachably connected in the front-to-back direction. When assembled, the rear mounting seat coaxially abuts the rear guide shaft tube against the front guide shaft tube.

7. The LED strip dispensing valve mechanism according to claim 6, characterized in that, The glue injection module includes a horizontal flow channel coaxially connected to the front guide shaft tube, a vertical flow channel perpendicularly connected to the horizontal flow channel, a glue injection channel obliquely connected to the vertical flow channel, a glue injection screw disposed in the vertical flow channel, and a second motor driving the glue injection screw to rotate; the vertical flow channel is located above the horizontal flow channel and is disposed in the front guide seat, the end of the glue injection channel away from the vertical flow channel passes through the upper surface of the front guide seat, and the second motor is located at the upper end of the front guide seat.

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