Pipe-shaped part inner wall rubber bonding device and rubber bonding method

Abstract

The application discloses a pipe-shaped part inner wall rubber pasting device, which comprises a base provided with a positioning groove for placing a pipe-shaped workpiece; a rubber pasting mechanism, which comprises a support and a flow module capable of moving in a first direction to or away from the positioning groove, the flow module is arranged on the support, the end of the flow module is formed with an arc-shaped surface for rubber pasting and fixing, the support is provided with an elastic reset member capable of acting on the flow module and driving the flow module to move in a second direction, and the first direction is perpendicular to the second direction; and a driving mechanism, which comprises a first driving member capable of acting on the flow module and driving the arc-shaped surface to move along the second direction to the inner wall surface of the pipe-shaped workpiece. In the application, the rubber pasting has good pasting effect and does not appear wrinkles or uneven pasting and the like.

Description

Technical Field

[0001] This invention relates to the fields of industrial semi-automation and 3C product assembly, and in particular to a fixture and corresponding adhesive application method for applying adhesive to the inner wall of tubular parts. Background Technology

[0002] In the production of tubular parts, adhesive tapes are often applied to different surfaces for attaching other components during subsequent processing. However, when the tubular part being adhesive-applied is tubular in shape, the unevenness of the application surface makes application difficult. If the adhesive is applied to the inner wall, the difficulty increases even further. Due to limited visibility, the internal structure of the tubular part cannot be clearly observed, making it difficult to ensure proper internal adhesive application, potentially leading to wrinkles or uneven application.

[0003] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0004] The purpose of this invention is to provide an adhesive applicator for the inner wall of tubular parts, which solves the problems of wrinkles or uneven adhesive application when applying adhesive to the inner wall of tubular parts in the prior art.

[0005] To achieve the above objectives, embodiments of the present invention provide an adhesive applicator for the inner wall of a tubular part, comprising a base having a positioning groove for placing the tubular workpiece; an adhesive applicator mechanism including a support and a flow module movable in a first direction relative to or away from the positioning groove, the flow module being disposed on the support, the end of the flow module having an arc-shaped surface for adhesive application and fixation, the support having an elastic reset member acting on the flow module and driving the flow module to move in a second direction, the first direction being perpendicular to the second direction; and a drive mechanism including a first drive member acting on the flow module and driving the arc-shaped surface to move towards the inner wall of the tubular workpiece along the second direction.

[0006] In one or more embodiments of the present invention, the bracket includes a first support plate and a second support plate disposed opposite to each other, the elastic reset member is disposed between the first support plate and the second support plate, and the flow module is detachably disposed on the second support plate.

[0007] In one or more embodiments of the present invention, the elastic reset member is a compression spring.

[0008] In one or more embodiments of the present invention, a first positioning post protrudes from the first support plate, a limiting member is provided on the first positioning post, and the second support plate is sleeved on the first positioning post and moves between the first support plate and the limiting member.

[0009] In one or more embodiments of the present invention, the flow module includes an adhesive applicator, and a first pressure plate and a second pressure plate detachably fixed to both sides of the adhesive applicator for clamping the adhesive, wherein the arcuate surface is formed at the end of the adhesive applicator and protrudes below the first pressure plate and the second pressure plate.

[0010] In one or more embodiments of the present invention, a plurality of second positioning posts protrude from both sides of the adhesive bracket, the first pressure plate and the second pressure plate are sleeved on the second positioning posts, and / or the first pressure plate and the second pressure plate are made of metal, the first pressure plate and the second pressure plate are fixed to the adhesive bracket by magnetic attraction, and / or the bottom edge of the first pressure plate and the second pressure plate is recessed to form a slot, and a third positioning post is formed on the adhesive bracket in cooperation with the slot.

[0011] In one or more embodiments of the present invention, the adhesive applicator for the inner wall of the tubular part further includes a top block mechanism, the top block mechanism including a top block body and a second driving member, the second driving member being able to drive the top block body to move toward the positioning groove and to squeeze the tubular workpiece into the positioning groove.

[0012] In one or more embodiments of the present invention, a negative pressure hole is provided in the positioning groove, and the negative pressure hole is connected to a vacuum device.

[0013] In one or more embodiments of the present invention, a pressure block is further included that covers the opening above the positioning groove, and the pressure block is fixed to the base by magnetic attraction.

[0014] The present invention also provides an adhesive application method, which specifically includes the following steps: S1. Place the tubular workpiece in the positioning groove; S2. The flow module with adhesive attached moves along the first direction into the cavity of the tubular workpiece. S3. The driving mechanism acts on the flow module to move in the second direction and squeezes the flow module against the inner wall surface of the tubular workpiece.

[0015] Compared with the prior art, the tubular part inner wall adhesive applicator according to the present invention has an arc-shaped surface on the flow module that fits against the inner wall of the tubular part. The adhesive is applied to the arc-shaped surface. At the same time, a moving mechanism is provided to transport the flow module into the cavity of the tubular part and squeeze the adhesive onto the inner wall of the tubular part. The application effect is good and the adhesive is avoided from wrinkles or incomplete application. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of an adhesive applicator for the inner wall of a tubular part according to an embodiment of the present invention. Figure 2 This is a partial enlarged view of an adhesive applicator for the inner wall of a tubular part according to an embodiment of the present invention. Figure 3 This is a schematic diagram of a base according to an embodiment of the present invention; Figure 4 This is a structural diagram of the first support plate according to an embodiment of the present invention; Figure 5 This is a structural diagram of the second support plate according to an embodiment of the present invention; Figure 6 This is a structural diagram of the third support plate according to an embodiment of the present invention; Figure 7 This is a structural diagram of a flow module according to an embodiment of the present invention; Figure 8 This is a structural diagram of the third driving component according to an embodiment of the present invention; Figure 9 This is a structural diagram of the top block body according to an embodiment of the present invention.

[0017] Explanation of key figure labels: 100-Inner wall adhesive applicator for tubular parts, 10-Base, 11-Positioning groove, 12-Top block body, 13-Negative pressure channel, 14-Negative pressure hole, 15-Vacuum connector, 16-Pressure block, 17-Slot, 18-Fourth positioning post, 20-Adhesive applicator mechanism, 21-Flow module, 211-Adhesive applicator bracket, 2111-Second positioning post, 2112-Third positioning post, 212-Pressure plate, 22-First support plate, 221-First positioning post, 222-Limiting component, 23-Second support plate, 24-Elastic reset component, 25-Third support plate, 251-Slide rail, 252-Slider, 253-Fourth support plate, 31-First driving component, 311-Baffle, 32-Second driving component, 33-Third driving component, 331-Connecting block, 3311-Adjusting groove, 40 Workbench, 41-Handrail. Detailed Implementation

[0018] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0019] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0020] like Figures 1 to 8 The tubular part inner wall adhesive applicator 100 according to a preferred embodiment of the present invention mainly includes a base 10, an adhesive applicator 20, and a drive mechanism. The base 10 is provided with a positioning groove 11 for placing the tubular part. This positioning groove 11 is arc-shaped and adapts to the outer wall of the tubular part, preventing the tubular part from rolling or shifting.

[0021] The adhesive applicator 20 mainly includes a bracket and a flow module 21 mounted on the bracket. The flow module 21 can move along a first direction and a second direction, wherein the first direction is the axial direction of the tubular part and is driven by a third drive member 33, and the second direction is the radial direction of the tubular part and is driven by a first drive member 31.

[0022] The end of the flow module 21 has an arc-shaped surface, such as... Figure 2 As shown, this is used for applying adhesive tape. The curved surface can match the inner wall of the tubular part, allowing the adhesive tape to adhere completely to the inner wall, avoiding wrinkles or uneven application. When the flow module 21 moves away from the tubular part in the first direction, there are no other components obstructing the flow, providing a larger operating space and facilitating the pre-application of adhesive tape to the curved surface at the end.

[0023] like Figure 2 As shown, the two ends of the positioning groove 11 are not on the same horizontal plane. The end of the groove is relatively low on the side closer to the adhesive applicator 20, and relatively high on the other side. Therefore, when the tubular part is attached, the orientation of the side wall to be attached is relatively more horizontal. Consequently, the shape requirements of the arc surface at the end of the flow module 21 are relatively low, and the processing requirements are also relatively low.

[0024] In use, after the adhesive is applied to the arc-shaped surface at the end of the flow module 21 in the first position, the third drive unit 33 drives the flow module 21 to move along the first direction and transport the adhesive into the cavity of the tubular part. Then, the first drive unit 31 drives the flow module 21 to move along the second direction, approach and squeeze the inner wall of the tubular part, apply the adhesive to the inner wall of the tubular part and then move away. Then, the third drive unit 33 drives the flow module 21 back to the first position to wait for the next adhesive application operation.

[0025] Specific support structure such as Figure 4 and Figure 5As shown, the system includes a first support plate 22 and a second support plate 23, with an elastic reset member 24 disposed between them. In this embodiment, the elastic reset member 24 is a compression spring, and the first support plate 22 has multiple mounting holes for placing the compression spring. Only one mounting hole in the figure contains a compression spring; the actual number can be adjusted as needed, and a larger number provides a greater reset force. Besides being located on the first support plate 22, the mounting holes can also be located on the second support plate 23. It should be understood that in other embodiments, the elastic reset member 24 can also be other elastic devices.

[0026] When the first driving member 31 acts on the second support plate 23, the two support plates are close together, and the elastic reset member 24 is squeezed and stores energy; when the force of the first driving member 31 disappears, the elastic reset member 24 resets and moves the second support plate 23 away from the first support plate 22, at which time there is a gap between the two support plates.

[0027] like Figure 4 As shown, a plurality of first positioning posts 221 protrude from the first support plate 22, and the second support plate 23 has openings and is fitted onto the first positioning posts 221. At the same time, in order to prevent the elastic reset member 24 from pushing the second support plate 23 out, a limit member 222 is provided on at least one of the first positioning posts 221 to limit the movement distance of the second support plate 23.

[0028] like Figure 4 As shown, the limiting member 222 is a sleeve with an annular protrusion at its end, and the end diameter of the corresponding first positioning post 221 is larger than the inner diameter of the sleeve to prevent it from detaching. The outer diameter of the annular protrusion is larger than the opening diameter of the second support plate 23 to prevent the second support plate 23 from detaching.

[0029] The above-described limiting method using a sleeve with annular protrusions is more robust due to its larger size. In other embodiments, a gasket can also be used, which is simpler in structure. It only requires a structure to block the gasket at the end of the corresponding first positioning post 221 (such as using a bolt and gasket).

[0030] It should be understood that, since the second support plate 23 moves within the opening range of the tubular part, the maximum movement distance of the second support plate 23 should be set within the opening range of the tubular part to prevent impact on the other side wall of the tubular part, or even deformation thereof. Therefore, in the design, when the second support plate 23 contacts the first support plate 22, the arc-shaped surface of the adhesive bracket 211 is in contact with the inner surface of the tubular part; while when the second support plate 23 is limited by the limiting member 222, the other side of the arc-shaped surface of the adhesive bracket 211 will not contact the other side wall of the tubular part.

[0031] Preferably, the first positioning post 221 includes two rows arranged opposite each other, and each row is provided with a limiter 222 to balance the force, ensure the posture of the second support plate 23, and avoid the situation where the distance on one side is small and the distance on the other side is large.

[0032] The flow module 21 also includes an adhesive applicator 211 detachably fixed to the second support plate 23, and a pair of pressure plates 212 disposed on both sides of the adhesive applicator 211. The aforementioned arc-shaped surface is formed at the bottom of the adhesive applicator 211 and protrudes between the pair of pressure plates 212. The pressure plates 212 fix the adhesive to the bottom of the adhesive applicator 211 to prevent the adhesive from shaking or wrinkling.

[0033] like Figure 7 As shown, the adhesive applicator 211 has second positioning posts 2111 protruding from both sides, which are respectively located at both ends in the length direction. The pressure plate 212 is sleeved on it and plays a positioning role to prevent the pressure plate 212 from shifting during the adhesive application process and affecting the adhesive application position and effect.

[0034] Furthermore, to improve the clamping effect of the adhesive, multiple third positioning posts 2112 protrude from the bottom of the adhesive bracket 211, which are also distributed along the length direction. Multiple slots are formed at the bottom of the pressure plate 212, the number of which corresponds to the number of the third positioning posts 2112, so as to improve the positioning effect of the pressure plate 212 at the bottom position.

[0035] It is understandable that, corresponding to the sawtooth-like design at the bottom of the adhesive bracket 211, an adhesive with a cutout design can be selected, and the cutout position corresponds to the position of the third positioning post 2112. With this design, the adhesive is fixed to the bottom of the adhesive bracket 211, which further improves the fixing effect compared to the simple clamping method.

[0036] Regarding the fixing between the pressure plate 212 and the adhesive bracket 211, since there is no other external force and the aforementioned dual positioning design, there is no need to worry about the pressure plate 212 shifting. Furthermore, since frequent disassembly and reassembly are required to fix the adhesive, there is no need to overemphasize the fixing effect. In this embodiment, a magnetic method is used to fix the pressure plate 212 to the adhesive bracket 211, simplifying the disassembly and reassembly steps and making it easier for operators to handle.

[0037] A third support plate 25 is provided on one side of the base 10, with the structure as follows: Figure 6 As shown, its length direction is the first direction. The third support plate 25 is also provided with a slide rail 251 and a slider 252. The first support plate 22 is detachably fixed on the slider 252. The third driving member 33 is provided on the back of the third support plate 25 and acts directly on the first support plate 22 (or can choose to act on the slider 252) to move it.

[0038] Preferably, a connecting block 331 is further provided at the output end of the third driving member 33, as Figure 8 shown, the connecting block is provided with an adjustment groove 3311 along its length direction, which corresponds to the second direction. The position of the gluing mechanism 20 can be finely adjusted through the adjustment groove 3311, so as to adapt to the diameter, opening position and the like when processing tubular workpieces of different sizes, thereby improving universality.

[0039] A fourth support plate 253 is fixed on the top of the third support plate 25, and the first driving member 31 is supported on the fourth support plate 253. Since the fourth support plate 253 enlarges the support area, the first driving member 31 can be more stably fixed on the third support plate 25. A baffle 311 is provided at the output end of the first driving member 31, and the baffle 311 extends downward to the gluing bracket 211, so as to transmit the output of the first driving member 31 to the gluing mechanism 20 and drive the gluing mechanism to move.

[0040] Refer to Figure 1 , Figure 3 and Figure 9 , both ends of the base 10 are bolted to the third support plates 25. A top block mechanism is provided in the middle groove of the base 10, comprising a top block body 12 and a second driving member 32 that drives the top block body 12 to move toward the positioning groove 11. The top block body 12 is located outside the side wall of the tubular part, and is configured to provide a reaction force for the gluing bracket 211 in the cavity of the tubular part, and provide lateral support for the side wall of the tubular part to prevent deformation thereof. Meanwhile, the second driving member 32 is fixed on the third support plate 25, and pushes against the top block body 12 from the other side to provide a force directed toward the positioning groove 11, preventing the top block body 12 from retreating.

[0041] Preferably, an inward concave surface facing the positioning groove 11 is formed on the top block body 12, as Figure 2 shown, the inward concave surface is adapted to the outer wall of the tubular part, so as to further improve the supporting effect on the outer wall of the tubular part and prevent the tubular part from rolling sideways or the side wall from deforming.

[0042] Relating to the positioning of tubular parts, on the base 10, a negative pressure channel 13 is opened below the positioning groove 11, which is parallel to the positioning groove 11, and a plurality of negative pressure holes 14 communicating with the negative pressure channel 13 are opened on the positioning groove 11. One end of the negative pressure channel 13 is closed, and the other end is provided with a vacuum joint 15, the vacuum joint 15 is fixed on the base 10 and configured for external connection to a negative pressure device. When the negative pressure device is started, a pressure difference is created between the negative pressure channel 13 and the positioning groove 11, so as to adsorb the tubular part in the positioning groove 11.

[0043] The negative pressure channel 13 is a channel that runs through the base 10. One end is fixed with a bolt to form a seal, and the other end is equipped with a vacuum connector 15. Therefore, the positions of the vacuum connector 15 and the bolt can be interchanged in different usage environments to suit the field usage environment and improve versatility.

[0044] Preferably, to further improve the fixing effect of the tubular part, a pressure block 16 is also provided on one side of the positioning groove 11. It is also fixed to the base 10 by magnetic attraction and presses on the tubular part to prevent it from moving. Preferably, a slot 17 for placing the pressure block 16 is also provided on the base 10 to prevent the pressure block 16 from shifting during processing and further improve the fixing effect.

[0045] At the same time, such as Figure 3 As shown, the base 10 is also provided with a fourth positioning post 18 located in the positioning groove 11, which is used to fix the tubular parts in the positioning groove 11 and improve the fixing effect.

[0046] To facilitate the placement and retrieval of tubular parts, a slope was made on the side of the base 10 away from the adhesive application area, increasing the operating space and making it easier for staff to operate.

[0047] like Figure 1 As shown, the tubular part inner wall adhesive applicator 100 also includes a worktable 40, on which all the above components are supported. Preferably, handrails 41 are provided on both sides of the worktable 40 for easy overall handling.

[0048] In this embodiment, the first drive member 31, the second drive member 32, and the third drive member 33 all use cylinders as power devices. Of course, in other embodiments, other power sources commonly used in the art can also be used, and this embodiment is not limited thereto.

[0049] The following is a brief description of how to use the adhesive applicator 100 for the inner wall of this tubular part. The main steps are as follows: S1. Place the tubular workpiece in the positioning groove 11; S2. The flow module 21 with adhesive attached moves along the first direction into the cavity of the tubular workpiece. S3. The driving mechanism acts on the flow module 21 to move in the second direction and squeezes the flow module 21 against the inner wall surface of the tubular workpiece.

[0050] In the above steps, after the tubular part is placed in the positioning groove 11, it is pressed tightly using the pressure block 16; the adhesive is attached to the arc-shaped surface of the adhesive bracket 211, and the two sides are clamped by the pressure plate 212; the inner wall adhesive device 100 of the tubular part is activated, the third driving member 33 drives the adhesive bracket 211 to move into the cavity of the tubular part, the first driving member 31 drives the adhesive bracket 211 to move and stick tightly to the inner wall of the tubular part to attach the adhesive to the inner wall, during this process, the second driving member 32 drives the top block body 12 to press against the outer wall of the tubular part from the side; after pressing for a period of time and when the adhesive is completely attached to the inner wall of the tubular part, the elastic reset member 24 drives the adhesive bracket 211 away from the inner wall of the tubular part, and the third driving member 33 drives the adhesive bracket 211 away from the tubular part.

[0051] The foregoing description of specific exemplary embodiments of the invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the invention, as well as various different choices and variations. The scope of the invention is intended to be defined by the claims and their equivalents.

Claims

1. A device for applying adhesive to the inner wall of a tubular part, characterized in that, include: The base is provided with a positioning groove for placing tubular workpieces; An adhesive applicator includes a support and a flow module that moves in a first direction toward or away from the positioning groove. The flow module is disposed on the support, and its end has an arc-shaped surface for applying and fixing adhesive. The support is provided with an elastic reset member that acts on the flow module and drives it to move in a second direction, the first direction being perpendicular to the second direction. The support includes a first support plate and a second support plate disposed opposite to each other. The elastic reset member is disposed between the first support plate and the second support plate. The flow module is detachably disposed on the second support plate. The flow module includes an adhesive applicator and a first pressure plate and a second pressure plate detachably fixed to both sides of the adhesive applicator for clamping adhesive. The arc-shaped surface is formed at the end of the adhesive applicator and protrudes below the first pressure plate and the second pressure plate. The top block mechanism includes a top block body and a second driving member. The second driving member drives the top block body to move toward the positioning groove and squeezes the tubular workpiece into the positioning groove. The driving mechanism includes a first driving member that acts on the flow module and drives the arc-shaped surface to move along the second direction toward the inner wall of the tubular workpiece. The output end of the first driving member is fixed with a baffle, and the baffle is connected to the adhesive applicator.

2. The adhesive applicator for the inner wall of tubular parts as described in claim 1, characterized in that, The elastic reset element is a compression spring.

3. The adhesive applicator for the inner wall of tubular parts as described in claim 1, characterized in that, The first support plate has a first positioning post protruding from it, and a limiting member is provided on the first positioning post. The second support plate is sleeved on the first positioning post and moves between the first support plate and the limiting member.

4. The adhesive applicator for the inner wall of tubular parts as described in claim 1, characterized in that, Multiple second positioning posts protrude from both sides of the adhesive applicator. The first pressure plate and the second pressure plate are sleeved on the second positioning posts, and / or the first pressure plate and the second pressure plate are made of metal. The first pressure plate and the second pressure plate are fixed to the adhesive applicator by magnetic attraction, and / or the bottom edge of the first pressure plate and the second pressure plate is recessed to form a slot, and a third positioning post is formed on the adhesive applicator to cooperate with the slot.

5. The adhesive applicator for the inner wall of tubular parts as described in claim 1, characterized in that, A negative pressure hole is provided in the positioning groove, and the negative pressure hole is connected to a vacuum device.

6. The adhesive applicator for the inner wall of a tubular part as described in claim 1, characterized in that, It also includes a pressure block that covers the opening above the positioning groove, and the pressure block is fixed to the base by magnetic attraction.

7. The adhesive application method of the adhesive application device for the inner wall of a tubular part according to any one of claims 1-6, characterized in that, Includes the following steps: S1. Place the tubular workpiece in the positioning groove; S2. The flow module with adhesive attached moves along the first direction into the cavity of the tubular workpiece. S3. The driving mechanism acts on the flow module to move in the second direction and squeezes the flow module against the inner wall surface of the tubular workpiece.

Images