Glue outlet head for multi-axis linkage space track gluing device

Abstract

The invention provides a glue outlet head for a multi-axis linkage space trajectory gluing device, which comprises a glue outlet pipe, a glue outlet nozzle, a glue outlet nozzle and a glue outlet nozzle, a notch is formed in the side wall of one end of the glue outlet nozzle, and the glue outlet nozzle comprises a glue outlet runner; the glue scraping unit can move in the axial direction of the glue outlet pipe, the glue scraping unit comprises a scraping piece part and a supporting part, the supporting part is arranged on the peripheral side of a pipe opening of the glue outlet pipe, the lower edge of the scraping piece part is arranged below the pipe opening of the glue outlet pipe, and the glue outlet runner is arranged between the notch and the scraping piece part. The mode that the notch is formed in the pipe wall of the glue outlet pipe is adopted, glue can flow out of the notch conveniently, the situation that the glue outlet amount is affected due to fluctuation of the edge of a part is avoided, meanwhile, the glue scraping unit with the supporting part is arranged at the pipe opening, gaps between the end faces of workpieces on the edge of the bottom of the glue scraping part are kept consistent, and the glue scraping efficiency is improved. Therefore, the situation that the part edge is coated with too little glue is avoided, and the part edge gluing plumpness is improved.

Description

Technical Field

[0001] This invention belongs to the field of automotive parts manufacturing, and in particular relates to a glue dispensing head for a multi-axis linkage spatial trajectory glue application device. Background Technology

[0002] In the manufacturing process of automotive parts, some components need to operate in environments with oil or similar fluids. These components typically have high sealing requirements at their joints. For the production of such products, this is generally achieved by filling or coating the edges of the outer shell parts with adhesive materials. This allows the adhesive to seal the gaps between the two outer shell parts after they are joined together. Once the adhesive dries, it meets the sealing requirements of the sealing components.

[0003] Current glue application devices are typically mounted on multi-axis equipment such as robotic arms. These devices move along a pre-set spatial trajectory, applying glue to predetermined locations. At each application point, the amount of glue is largely determined by the gap between the glue nozzle and the edge of the part, as well as the control of the glue extrusion system and structure. In some shell-shaped parts, the edges are uneven. When facing protruding edges, the gap between the part and the glue nozzle is shortened instantaneously, affecting the fullness of the glue application by the robotic arm. Summary of the Invention

[0004] In view of this, the present invention aims to provide a dispensing head for a multi-axis linkage spatial trajectory adhesive coating device to ensure the amount of adhesive dispensed during the adhesive coating process.

[0005] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0006] A dispensing head for a multi-axis linkage spatial trajectory adhesive applicator, comprising:

[0007] The dispensing tube has a slit in its side wall at one end, and the dispensing tube includes a dispensing channel;

[0008] The glue scraping unit is capable of moving along the axial direction of the glue dispensing tube. The glue scraping unit includes a scraper part and a support part. The support part is placed around the opening of the glue dispensing tube, the lower edge of the scraper part is placed below the opening of the glue dispensing tube, and the glue dispensing channel is placed between the cut and the scraper part.

[0009] Furthermore, the scraper section is provided with a surrounding section on both sides, the surrounding section is placed around the dispensing tube, the surrounding section has two limiting sides, and the line connecting the two limiting sides coincides with the chord of the dispensing tube.

[0010] Furthermore, the glue scraping unit has a limiting slide, and the outer wall of the glue dispensing tube extends radially outward to form a retaining edge, which is placed inside the limiting slide. When the glue scraping unit is placed at the lower limit position, the retaining edge can abut against the top of the limiting slide.

[0011] Furthermore, the edge of the card is wedge-shaped, with its inclined surface facing the nozzle of the dispensing tube.

[0012] Furthermore, a glue outlet space is left between the two surrounding portions, and the cut in the glue outlet space corresponds to the glue outlet space.

[0013] Furthermore, the dispensing head also includes a connector, which has a plug-in connector, and the top end of the dispensing tube can be inserted into the plug-in connector.

[0014] Furthermore, the top section of the dispensing tube is oriented in a certain direction, and the cross-section of the connector is similar in shape to the top section of the dispensing tube.

[0015] Furthermore, the top of the dispensing tube extends outward to form a flange, the connector has a connecting part that can fit with the flange, a screw sleeve is sleeved on the outside of the dispensing tube, one end of the screw sleeve extends inward to form a locking edge, the locking edge and the screw sleeve can be screwed into the connecting part, and the locking edge can be tightly pressed against the flange.

[0016] Furthermore, the lower end face of the connecting part and the upper end face of the flange are respectively provided with sealing grooves, and a sealing ring is placed in the sealing groove.

[0017] Compared with existing technologies, the dispensing head for a multi-axis linkage spatial trajectory dispensing device described in this invention has the following advantages:

[0018] This invention employs a method of making cuts in the wall of the dispensing tube to facilitate the flow of adhesive from the cuts, avoiding the impact of unevenness on the adhesive dispensing amount due to the undulation of the part's edge. At the same time, by setting a scraping unit with a support at the tube opening, the gap between the end faces of the workpiece at the bottom edge of the scraping unit is kept consistent, thereby avoiding insufficient adhesive application to the part's edge and improving the fullness of adhesive application to the part's edge. Attached Figure Description

[0019] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of the dispensing head in this application;

[0021] Figure 2 This is a schematic diagram of the assembly structure of the glue dispensing tube and the glue scraping unit;

[0022] Figure 3 This is a schematic diagram of the glue dispensing unit structure;

[0023] Figure 4 This is a schematic diagram of the exploded structure of the dispensing head in this application.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1-Dispensing tube; 11-Slit; 12-Edge clamp; 13-Flange; 14-Sealing groove; 15-Dispensing channel; 2-Glue scraping unit; 21-Glue scraping part; 22-Enclosing part; 23-Support part; 24-Limiting slide; 25-Dispensing space; 3-Connector; 31-Connecting part; 32-Plug; 4-Threaded sleeve; 41-Locking edge. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0027] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 mechanical connection or an electrical 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 will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] The dispensing head for a multi-axis linkage spatial trajectory adhesive coating device of the present invention includes a dispensing tube 1 connected to an adhesive remover, with a slit 11 on the side wall of one end. The dispensing tube 1 has an adhesive flow channel, and the adhesive medium to be coated is placed in the dispensing flow channel. The slit 11 is V-shaped, and the opening direction of the V-shape faces the opening direction of the dispensing tube 1. The dispensing tube 1 is connected to a scraper unit 2, which can move along the axial direction of the dispensing tube 1. The scraper unit 2 has a scraper part and a support part 23. The edge of the scraper part 21 at one end along the axial direction of the dispensing tube 1 is placed below or flush with the opening of the dispensing tube 1. After the adhesive medium flows out of the dispensing flow channel, it contacts the bottom edge of the scraper part 21, thereby avoiding excessive adhesive medium residue on the edge surface of the part, which would cause waste. At the same time, after the part is sealed and bonded, excessive adhesive overflows from the edge of the part, affecting the appearance of the part. The support 23 is rod-shaped, and its top end is fixed to the scraper unit 2 by bonding or welding. During operation, the bottom end of the support unit abuts against the end face of the workpiece edge, thereby ensuring that the gap between the bottom edge of the scraper 21 and the end face of the workpiece is consistent. This prevents the undulations of the workpiece edge from affecting the gap between the nozzle of the glue dispensing tube 1 and the end face of the workpiece edge, thus affecting the amount of adhesive medium adhering to the workpiece. In this embodiment, the support 23 is placed on both sides of the scraper 21, and the cut 11 and the scraper 21 are placed on both sides of the glue dispensing channel.

[0031] The specific structure and working principle of the adhesive remover are existing technologies and will not be described in detail here.

[0032] The scraper section has surrounding portions 22 on both sides, which are positioned around the dispensing tube 1. Each surrounding portion 22 has two limiting edges, and the line connecting the two limiting edges coincides with the chord of the dispensing tube 1. In this embodiment, the surrounding portions 22 are arc-shaped, with the two surrounding portions 22 positioned on the left and right sides of the dispensing tube 1, respectively. The two limiting edges of the surrounding portions 22 are positioned on the front and rear sides of the dispensing tube 1, respectively, so that the dispensing tube 1 can drive the scraper unit 2 to move through the surrounding portions 22 when it moves. A dispensing space 25 is left between the two surrounding portions 22. The cut 11 of the dispensing space 25 corresponds to the dispensing space 25, thereby preventing the glue squeezed out of the cut 11 from being affected by the scraper unit 2 and reducing the amount of glue dispensed from the dispensing tube 1.

[0033] The scraping unit 2 has a limiting slide 24. A retaining edge 12 extends radially outward from the outer wall of the dispensing tube 1. The retaining edge 12 is positioned within the limiting slide 24. When the scraping unit 2 moves axially along the dispensing tube 1, the retaining edge 12 can move within the limiting slide 24. When the scraping unit 2 is at its lower limit position, the retaining edge 12 abuts against the top of the limiting slide 24. This prevents the scraping unit 2 from separating from the dispensing tube 1 due to its own weight after the dispensing tube 1 has completed the glue application process and separated from the workpiece. The retaining edge 12 is wedge-shaped, with its inclined surface facing the opening of the dispensing tube 1 to facilitate the installation of the scraping unit 2.

[0034] The dispensing head of the multi-axis linkage spatial trajectory adhesive coating device of the present invention further includes a connector 3. The connector 3 has a plug 32, and the top end of the dispensing tube 1 can be inserted into the plug 32. In this embodiment, the top end of the dispensing tube 1 has a square cross-section, and the cross-section of the plug 32 is similar in shape to the top end of the dispensing tube 1. In this embodiment, the connector 3 is used to connect the extrusion mechanism of the adhesive medium. One end of the connector is connected to the discharge port of the base mechanism, and the other end is connected to the dispensing tube 1. The extrusion mechanism is connected to the free end of the adhesive coating robot, and the movement or rotation of the dispensing tube 1 in space is controlled by the adhesive coating robot. The square structure avoids relative rotation between the dispensing tube 1 and the mobile device due to loose connection, which would affect the adhesive coating effect. The dispensing tube 1 extends outward from its top end to form a flange 13. The connector 3 has a connecting part 31 that fits snugly against the flange 13. A threaded sleeve 4 is fitted over the dispensing tube 1, with one end of the sleeve extending inward to form a locking edge 41. The locking edge 41 and the sleeve 4 are screwed together and press tightly against the flange 13 for quick assembly and disassembly of the dispensing tube 1. Sealing grooves 14 are respectively formed on the lower end face of the connecting part 31 and the upper end face of the flange 13. A sealing ring is placed in the sealing groove 14 to seal the connection point and prevent adhesive from leaking out from the gap between the connector 3 and the dispensing tube 1.

[0035] The dispensing head of the multi-axis linkage spatial trajectory glue applicator described in this invention, during operation, has the slit 11 of the glue dispensing tube 1 facing the direction of movement. The glue medium extruded by the extruder flows outward from both the tube opening and the slit 11, accumulating on the end face of the workpiece edge. Then, the bottom edge of the scraper 21 scrapes the glue medium on the end face flat, or carries excess glue medium backward. The scraper unit 2, which can move axially along the tube shaft, ensures that the lower edge of the scraper 21 has the same gap as the workpiece, preventing the glue quantity from being affected by undulations on the workpiece edge. During operation, to rotate the slit 11, the free end of the glue applicator robot or the free end of the robotic arm can rotate. The connecting part 3 of the extruder or glue dispensing tube 1 is connected to the free end of the glue applicator robot. Specifically, it can be a parallel robot, with the output shaft of the parallel robot being the free end. Alternatively, a gear or synchronous pulley transmission structure can be installed on the connecting part 3, and the rotation of the glue dispensing tube 1 can be controlled by a motor.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dispensing head for a multi-axis linkage spatial trajectory adhesive applicator, characterized in that: include The dispensing tube (1) has a cut (11) on the side wall at one end, and the dispensing tube (1) includes a dispensing channel; The glue scraping unit (2) is movable along the axial direction of the glue dispensing pipe (1). The glue scraping unit (2) includes a scraper part and a support part (23). The support part (23) is placed around the opening of the glue dispensing pipe (1). The lower edge of the scraper part is placed below the opening of the glue dispensing pipe (1), and the glue dispensing channel is placed between the cut (11) and the scraper part.

2. The dispensing head for a multi-axis linkage spatial trajectory adhesive applicator according to claim 1, characterized in that: The scraper section is provided with a surrounding part (22) on both sides. The surrounding part (22) is placed around the glue outlet tube (1). The surrounding part (22) has two limiting sides, and the line connecting the two limiting sides coincides with the chord of the glue outlet tube (1).

3. A dispensing head for a multi-axis linkage spatial trajectory adhesive applicator according to claim 1 or 2, characterized in that: The glue scraping unit (2) has a limiting slide (24), and the outer wall of the glue dispensing tube (1) extends radially outward to form a retaining edge (12). The retaining edge (12) is placed inside the limiting slide (24), and when the glue scraping unit (2) is placed at the lower limit position, the retaining edge (12) can abut against the top of the limiting slide (24).

4. The dispensing head for a multi-axis linkage spatial trajectory adhesive applicator according to claim 3, characterized in that: The edge (12) is wedge-shaped, with its inclined surface facing the opening of the dispensing tube (1).

5. A dispensing head for a multi-axis linkage spatial trajectory adhesive applicator according to claim 2 or 4, characterized in that: A glue outlet space (25) is left between the two surrounding portions (22), and the cut (11) of the glue outlet space (25) is aligned with the glue outlet space (25).

6. A dispensing head for a multi-axis linkage spatial trajectory adhesive applicator according to claim 1, 2, or 4, characterized in that: It also includes a connector (3) having a plug (32) at the top of the dispensing tube (1) which can be plugged into the plug (32).

7. A dispensing head for a multi-axis linkage spatial trajectory adhesive applicator according to claim 6, characterized in that: The top section of the dispensing tube (1) is oriented, and the cross-section of the connector (32) is similar in shape to the top section of the dispensing tube (1).

8. The dispensing head for a multi-axis linkage spatial trajectory dispensing device according to claim 7, characterized in that: The dispensing tube (1) extends outward from the top end to form a flange (13). The connector (3) has a connecting part (31) that can fit with the flange (13). A threaded sleeve (4) is fitted over the dispensing tube (1). One end of the threaded sleeve (4) extends inward to form a locking edge (41). The threaded sleeve (4) can be screwed into the connecting part (31). The locking edge (41) can press tightly against the flange (13).

9. A dispensing head for a multi-axis linkage spatial trajectory adhesive applicator according to claim 8, characterized in that: The lower end face of the connecting part (31) and the upper end face of the flange (13) are respectively provided with sealing grooves (14), and a sealing ring is placed in the sealing groove (14).

Images