Dispensing mechanism and dispensing device

Abstract

The utility model discloses a dispensing mechanism. The dispensing mechanism comprises an integrally-formed valve body, one end of the valve body is provided with a glue outlet hole extending in the length direction of the valve body, the side face of the valve body is provided with an inclined glue inlet hole, and the glue inlet hole is communicated with the glue outlet hole; the needle tube is inserted into the glue outlet hole, and the end, located in the glue outlet hole, of the needle tube is arranged close to the glue inlet hole. According to the dispensing mechanism, the glue retention time can be shortened, and the glue is prevented from being accumulated in the dispensing mechanism, so that the glue is prevented from blocking the dispensing mechanism after being hardened. The utility model further provides a dispensing device comprising the dispensing mechanism.

Description

Technical Field

[0001] The present application relates to the field of glue dispensing technology, and in particular to a glue dispensing mechanism and a glue dispensing device. Background Art

[0002] The glue dispensing device is the core component of the glue dispensing system. The existing glue dispensing device consists of a drip valve, a movable rod and a standard needle tube. However, there is a structural dead corner in the glue storage space inside the existing drip valve, which is prone to glue accumulation. When the glue solidifies, it is easy to cause the problem of clogging the needle tube. Utility Model Content

[0003] In view of the above, it is necessary to propose a dispensing mechanism and a dispensing device that can avoid clogging of the dispensing mechanism.

[0004] An embodiment of the present application provides a glue dispensing mechanism, which includes a valve body, which is integrally formed, and one end of the valve body is provided with a glue outlet hole extending along the length direction of the valve body, and the side of the valve body is provided with an inclined glue inlet hole, which is connected to the glue outlet hole; a needle tube is inserted into the glue outlet hole, and one end of the needle tube located in the glue outlet hole is arranged adjacent to the glue inlet hole.

[0005] Since the valve body is integrally formed, there is no joint structure in the valve body itself, thereby avoiding dead angles on the valve body, and the glue mixture is not easy to accumulate in the valve body and cause clogging of the valve body. In addition, since the glue inlet hole is arranged close to the glue outlet hole, when the glue mixture flows into the valve body from the glue inlet hole, the glue mixture can quickly flow into the glue outlet hole to be quickly discharged from the needle tube in the glue outlet hole. Since the glue inlet hole and the glue outlet hole are close to each other, the time the glue mixture stays in the valve body is reduced, thereby avoiding the glue mixture hardening and clogging the valve body.

[0006] In some embodiments, the diameter of the glue inlet hole gradually decreases from an end of the glue inlet hole away from the glue outlet hole to an end of the glue inlet hole close to the glue outlet hole.

[0007] In some embodiments, a first through hole and a second through hole are formed in the valve body, the diameter of the first through hole is smaller than the diameter of the second through hole, the first through hole and the second through hole are interconnected to form the glue outlet hole, the needle tube is inserted in the first through hole, the glue inlet hole is connected to the second through hole, and is located at one end close to the first through hole.

[0008] In some embodiments, the valve body is made of Teflon.

[0009] In some embodiments, the valve body is provided with a transition hole, both ends of which are respectively connected to the first through hole and the second through hole, and the aperture of the transition hole gradually decreases from one end of the transition hole close to the second through hole to one end of the transition hole close to the first through hole.

[0010] In some embodiments, the glue dispensing mechanism further includes a movable rod, which is plugged into and fits with the second through hole, and the movable rod can slide along the second through hole to block the glue inlet hole.

[0011] In some embodiments, a blocking portion is provided at one end of the movable rod facing the needle tube, and the blocking portion abuts against the needle tube to block the needle tube.

[0012] In some embodiments, the cross-sectional area of ​​the blocking portion gradually decreases from an end away from the needle tube to an end close to the needle tube.

[0013] In some embodiments, the valve body is further provided with a third through hole, the third through hole is connected to the side of the second through hole away from the first through hole, the diameter of the third through hole is larger than the diameter of the movable rod, and the movable rod passes through the third through hole to be inserted into the second through hole.

[0014] The embodiment of the present application also provides a glue dispensing device, including the glue dispensing mechanism and a mounting seat as described above, wherein the mounting seat is provided with a mounting hole, and the glue dispensing mechanism is inserted into the mounting hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the dispensing mechanism provided in the embodiment of the present application.

[0016] Figure 2 yes Figure 1 The schematic cross-sectional view of the valve body along line II-II in the dispensing mechanism shown.

[0017] Figure 3 yes Figure 1 The schematic cross-sectional view of the valve body and the needle tube along the II-II line in the dispensing mechanism shown.

[0018] Figure 4 yes Figure 2 The schematic cross-sectional view of part A of the valve body is shown.

[0019] Figure 5 yes Figure 1 The schematic cross-sectional view of the dispensing mechanism shown is along line II-II.

[0020] Figure 6 yes Figure 1 A schematic diagram of the three-dimensional structure of the movable rod in the dispensing mechanism is shown.

[0021] Figure 7 It is a partial cross-sectional schematic diagram of the dispensing device provided in an embodiment of the present application.

[0022] Main component symbols

[0023] Dispensing device 1000

[0024] Dispensing mechanism 100

[0025] Valve body 10

[0026] Glue outlet hole 11

[0027] Glue inlet hole 12

[0028] First through hole 13

[0029] The second through hole 14

[0030] Transition hole 15

[0031] The third through hole 16

[0032] Needle 20

[0033] Activity rod 30

[0034] Blocking part 31

[0035] Mounting Block 200

[0036] Mounting hole 201 DETAILED DESCRIPTION

[0037] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0038] In the description of the present application, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, in the description of the present application, it should be noted that the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0039] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0041] See also Figure 1 The embodiment of the present application provides a dispensing mechanism 100. The dispensing mechanism 100 is a mechanism used for dispensing glue on a workpiece in a dispensing machine.

[0042] See also Figure 1 and Figure 2 The dispensing mechanism 100 includes a valve body 10 and a needle tube 20. The valve body 10 is integrally formed, and a glue outlet hole 11 extending along the length direction of the valve body 10 is provided at one end of the valve body 10, and a glue inlet hole 12 is provided at an angle on the side of the valve body 10, and the glue inlet hole 12 is connected to the glue outlet hole 11. In this embodiment, the valve body 10 is made of Teflon material, and the valve body 10 is generally in a stepped columnar structure. The needle tube 20 is inserted into the glue outlet hole 11, and one end of the needle tube 20 located in the glue outlet hole 11 is arranged adjacent to the glue inlet hole 12.

[0043] During the implementation of the glue dispensing mechanism 100, a glue mixture consisting of two different types of glue is input into the glue inlet hole 12, and the glue mixture flows from the glue inlet hole 12 into the glue outlet hole 11 and enters the needle tube 20, and the needle tube 20 then dispenses the glue mixture on the workpiece. It should be noted that when the two glues are mixed, a chemical reaction will occur, thereby hardening. When the glue mixture stays in the valve body 10 for too long, the glue mixture will block the needle tube 20 after hardening, so that the glue dispensing mechanism 100 cannot work normally. In the traditional glue dispensing mechanism 100, the valve body 10 is usually assembled from two structures. At this time, a seam mechanism will be generated between the two structures, thereby generating a dead angle, and the glue mixture is easy to accumulate in the dead angle. When the glue mixture hardens, it causes a blockage phenomenon. The valve body 10 of this embodiment is formed in one piece, so there is no seam structure inside the valve body 10, thereby avoiding the generation of dead angles and avoiding the phenomenon of glue mixture accumulation. In addition, since the valve body 10 is made of Teflon material, which has the advantage of a low friction coefficient, when the glue mixture passes through the valve body 10, the glue mixture encounters little resistance, thereby preventing the glue mixture from remaining on the inner wall of the glue inlet hole 12 or the glue outlet hole 11, thereby preventing the glue mixture from hardening and clogging the valve body 10. Since the needle tube 20 is disposed close to the glue inlet hole 12, the distance between the needle tube 20 and the glue inlet hole 12 is shortened, so that the glue mixture in the glue inlet hole 12 can quickly enter the needle tube 20 from the glue outlet hole 11, thereby preventing the glue mixture (hereinafter collectively referred to as glue) from hardening in the valve body 10 and causing clogging.

[0044] In this embodiment, the diameter of the glue inlet hole 12 gradually decreases from the end away from the glue outlet hole 11 to the end close to the glue outlet hole 11. Since the diameter of the glue inlet hole 12 at the end away from the glue outlet hole 11 is larger, the glue can quickly enter the glue inlet hole 12 to quickly supply glue to the glue dispensing mechanism 100. Since the closer to the glue outlet hole 11, the smaller the diameter of the glue inlet hole 12, the faster the glue flows in the glue inlet hole 12, so that the glue quickly enters the glue outlet hole 11, so that the glue passes through the needle tube 20 and is applied to the workpiece before hardening. By setting the glue inlet hole 12 in this way, the time that the glue stays in the valve body 10 can be reduced, so that the glue is not easy to harden and clog in the valve body 10, thereby extending the service life of the glue dispensing mechanism 100.

[0045] See also Figure 2 and Figure 3The valve body 10 is provided with a first through hole 13 and a second through hole 14, the center lines of the first through hole 13 and the second through hole 14 are collinear, the first through hole 13 and the second through hole 14 are connected to each other to form a glue outlet hole 11, the needle tube 20 is inserted in the first through hole 13, the glue inlet hole 12 is connected to the second through hole 14, and the glue inlet hole 12 is arranged close to the first through hole 13. Since the glue inlet hole 12 is arranged close to the first through hole 13, the distance between the needle tube 20 and the glue inlet hole 12 is shortened, so that the glue can quickly enter the needle tube 20 after flowing out of the glue inlet hole 12, thereby reducing the residence time of the glue in the valve body 10, and preventing the glue from hardening in the valve body 10 and causing blockage.

[0046] In this embodiment, the diameter of the first through hole 13 is smaller than the diameter of the second through hole 14. When the glue flows from the second through hole 14 into the needle tube 20 in the first through hole 13, the glue flows from a larger space into a smaller space. At this time, the flow rate of the glue becomes faster, so that the glue can quickly enter the needle tube 20 and be applied to the workpiece, thereby reducing the residence time of the glue in the valve body 10 and avoiding the hardening of the glue in the valve body 10 to cause blockage.

[0047] See also Figure 2 and Figure 4 The valve body 10 is provided with a transition hole 15, and the two ends of the transition hole 15 are respectively connected with the first through hole 13 and the second through hole 14, and the aperture of the transition hole 15 gradually decreases from the end of the transition hole 15 close to the second through hole 14 to the end of the transition hole 15 close to the first through hole 13. Since the apertures of the first through hole 13 and the second through hole 14 are different, there is a dead angle between the first through hole 13 and the second through hole 14, which easily causes glue accumulation. By setting the transition hole 15 between the first through hole 13 and the second through hole 14, the hole wall of the transition hole 15 plays a role in guiding the glue, which not only eliminates the dead angle, but also allows the glue to flow more smoothly from the second through hole 14 into the needle tube 20, thereby avoiding the glue from accumulating in the valve body 10, and then avoiding the valve body 10 from being blocked.

[0048] See also Figure 1 , Figure 2 and Figure 5, the glue dispensing mechanism 100 also includes a movable rod 30, specifically, the movable rod 30 is a columnar rod, the movable rod 30 is plugged into the second through hole 14 and the movable rod 30 can slide along the second through hole 14. By plugging the movable rod 30 into the second through hole 14, during the glue dispensing process, the movable rod 30 is driven to slide toward the needle tube 20, so that the side of the movable rod 30 forms a blockage on the glue inlet hole 12, thereby preventing the glue inlet hole 12 from continuing to feed glue into the second through hole 14. Obviously, when the movable rod 30 blocks the glue inlet hole 12 faster, the glue dispensing mechanism 100 produces less glue, and when the movable rod 30 blocks the glue inlet hole 12 slower, the glue dispensing mechanism 100 produces more glue. In this way, the operator can determine the glue dispensing amount according to the size of the workpiece, and then control the glue dispensing amount of the glue dispensing mechanism 100 by controlling the movable rod 30, so that the application range of the glue dispensing mechanism 100 is wider, and the glue dispensing amount can be adjusted according to different workpieces.

[0049] See also Figure 2 , Figure 5 and Figure 6 Specifically, a sealing portion 31 is provided at one end of the movable rod 30 facing the needle tube 20. When the movable rod 30 slides toward the needle tube 20, the side of the movable rod 30 not only blocks the glue inlet hole 12, but also the sealing portion 31 of the movable rod 30 abuts against the needle tube 20, thereby blocking the needle tube 20 to prevent the glue in the second through hole 14 from continuing to flow into the needle tube 20, thereby preventing excessive glue discharge.

[0050] The cross-sectional area of ​​the blocking portion 31 gradually decreases from the end away from the needle tube 20 to the end close to the needle tube 20. In this embodiment, the blocking portion 31 is a cone. By setting the blocking portion 31 as a cone, when the blocking portion 31 abuts against the needle tube 20, there is a line contact between the blocking portion 31 and the needle tube 20, and the sealing performance of the blocking portion 31 to the needle tube 20 is better. In other embodiments, the blocking portion 31 may be truncated cone-shaped.

[0051] The valve body 10 is also provided with a third through hole 16, which is connected to an end of the second through hole 14 away from the first through hole 13. The diameter of the third through hole 16 is greater than the diameter of the movable rod 30, and the movable rod 30 passes through the third through hole 16 to be plugged into the second through hole 14. Since the diameter of the third through hole 16 is greater than the diameter of the movable rod 30, when the movable rod 30 is installed on the valve body 10, the movable rod 30 can be more easily inserted into the valve body 10, thereby facilitating the assembly of the operator. In addition, since the movable rod 30 and the second through hole 14 are plug-fitted, the second through hole 14 has a processing tolerance requirement. Obviously, the processing accuracy of the second through hole 14 is higher than the processing accuracy of the third through hole 16. After the third through hole 16 is opened in the valve body 10, the opening length of the second through hole 14 is shortened, thereby making the processing of the second through hole 14 easier.

[0052] The working principle of the dispensing mechanism 100 provided in the embodiment of the present application is roughly as follows:

[0053] When supplying glue to the glue dispensing mechanism 100, the glue flows from the end with a larger diameter of the glue inlet hole 12 to the end with a smaller diameter of the glue inlet hole 12, and flows into the second through hole 14. Since the needle tube 20 is arranged close to the glue inlet hole 12, the glue entering the second through hole 14 can quickly flow into the needle tube 20 located in the first through hole 13. At this time, the movable rod 30 is driven to slide toward the needle tube 20. When the blocking portion 31 of the movable rod 30 abuts against the needle tube 20, the side surface of the movable rod 30 just blocks the glue inlet hole 12. At this time, the glue in the glue inlet hole 12 no longer continues to flow into the second through hole 14, and the glue in the second through hole 14 no longer flows into the needle tube 20, and the glue in the needle tube 20 flows out and is dotted on the workpiece.

[0054] Since the closer the glue inlet hole 12 is to the second through hole 14, the smaller the diameter of the glue inlet hole 12 is, the flow speed of the glue will become faster and faster when the glue flows in the glue inlet hole 12, so that the glue quickly flows into the second through hole 14. Since the glue inlet speed is accelerated, the glue quickly enters the valve body 10, so that the glue quickly passes through the needle tube 20 and is applied to the workpiece before hardening. Since the needle tube 20 is arranged close to the glue inlet hole 12, the glue in the second through hole 14 can quickly enter the needle tube 20, thereby increasing the glue discharge speed, preventing the glue from staying in the valve body 10 for too long, and allowing the glue to be discharged from the needle tube 20 before hardening, thereby preventing the glue from accumulating in the valve body 10 and blocking the valve body 10 or the needle tube 20.

[0055] In addition, during the dispensing process, the movable rod 30 is driven to slide toward the needle tube 20 so that the side of the movable rod 30 blocks the glue inlet hole 12, thereby preventing the glue inlet hole 12 from continuing to feed glue into the second through hole 14. At the same time, the movable rod 30 abuts against the needle tube 20 to block the needle tube 20, thereby preventing glue from flowing into the needle tube 20. Therefore, the operator can determine the amount of glue to be dispensed according to the size of the workpiece, and then control the amount of glue output by the dispensing mechanism 100 by controlling the movable rod 30.

[0056] See also Figure 7 The present application also discloses a dispensing device 1000, which includes the above-mentioned dispensing mechanism 100 and a mounting seat 200. The mounting seat 200 is provided with a mounting hole 201, the dispensing mechanism 100 is inserted into the mounting hole 201, and the needle tube 20 in the dispensing mechanism 100 protrudes from the mounting hole 201 to dispense glue to the workpiece. The mounting seat 200 can be connected to a manipulator (not shown), and the manipulator moves the dispensing mechanism 100 to the workpiece through the mounting seat 200 for dispensing glue.

[0057] It is obvious to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present application.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the preferred embodiments, a person of ordinary skill in the art should understand that the technical solution of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application.

Claims

1. A dispensing mechanism, characterized in that: include: A valve body, wherein the valve body is integrally formed, one end of the valve body is provided with a glue outlet hole extending along the length direction of the valve body, and a side surface of the valve body is provided with an inclined glue inlet hole, and the glue inlet hole is connected with the glue outlet hole; The needle tube is inserted into the glue outlet hole, and one end of the needle tube located in the glue outlet hole is arranged adjacent to the glue inlet hole.

2. The dispensing mechanism according to claim 1, characterized in that: The diameter of the glue inlet hole gradually decreases from an end of the glue inlet hole away from the glue outlet hole to an end of the glue inlet hole close to the glue outlet hole.

3. The dispensing mechanism according to claim 1, characterized in that: The valve body is provided with a first through hole and a second through hole, wherein the diameter of the first through hole is smaller than the diameter of the second through hole, the first through hole and the second through hole are interconnected to form the glue outlet hole, the needle tube is inserted in the first through hole, the glue inlet hole is connected with the second through hole, and is located at one end close to the first through hole.

4. The dispensing mechanism according to claim 3, characterized in that: The material of the valve body is Teflon.

5. The dispensing mechanism according to claim 3, characterized in that: The valve body is provided with a transition hole, both ends of which are respectively connected to the first through hole and the second through hole, and the aperture of the transition hole gradually decreases from one end of the transition hole close to the second through hole to one end of the transition hole close to the first through hole.

6. The dispensing mechanism according to claim 3, characterized in that: The glue dispensing mechanism also includes a movable rod, which is plug-fitted with the second through hole and can slide along the second through hole to block the glue inlet hole.

7. The dispensing mechanism according to claim 6, characterized in that: A blocking portion is provided at one end of the movable rod facing the needle tube, and the blocking portion abuts against the needle tube to block the needle tube.

8. The dispensing mechanism according to claim 7, characterized in that: The cross-sectional area of ​​the blocking portion gradually decreases from an end away from the needle tube to an end close to the needle tube.

9. The dispensing mechanism according to claim 6, characterized in that: The valve body is further provided with a third through hole, which is connected to a side of the second through hole away from the first through hole. The diameter of the third through hole is larger than the diameter of the movable rod, and the movable rod passes through the third through hole to be inserted into the second through hole.

10. A dispensing device, characterized in that: include: The dispensing mechanism as claimed in any one of claims 1 to 9; A mounting seat is provided with a mounting hole, and the dispensing mechanism is inserted into the mounting hole.

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