A semi-automatic car audio film application station

Abstract

This utility model discloses a semi-automatic car audio film application table, comprising: a worktable, a film placed on the worktable; a guide groove disposed on one side of the worktable, a movable stage installed in the guide groove, and a drive assembly for driving the movable stage to slide within the guide groove; a lifting assembly disposed above the movable stage, and a telescopic assembly disposed above the lifting assembly, the telescopic assembly including a guide rod, and a pressure ring rotatably mounted at the end of the guide rod; this utility model allows the pressure ring at the end of the first electric push rod of the telescopic assembly to rotatably apply film to the inner side of the audio tube workpiece, ensuring accurate axial positioning of the workpiece; the control module links the downward pressing of the lifting assembly and the movement of the drive assembly, so that the workpiece is evenly pressed onto the film during rolling, eliminating human operation errors and achieving high-precision curved surface application without bubbles or wrinkles.

Description

Technical Field

[0001] This utility model is a semi-automatic car audio film applicator, belonging to the field of film applicator technology. Background Technology

[0002] In the automotive audio manufacturing industry, protective or decorative films need to be precisely applied to the surface of speaker housings (such as speaker tubes) to improve the product's wear resistance, acoustic performance, and appearance consistency. This process requires the diaphragm to be uniformly applied to curved surfaces without bubbles or wrinkles. Traditional manual operation is difficult to meet the stringent efficiency and quality requirements of mass production, and semi-automated equipment is urgently needed to achieve a precise and controllable film application process.

[0003] Existing manual film application equipment relies on manual alignment, pressing, and rolling of the workpiece, which leads to uneven force application, positioning deviation, and easy generation of film wrinkles, bubbles, or tears. In particular, when processing curved workpieces, the adhesion is insufficient, resulting in low product yield. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a semi-automatic car audio film application station to solve the problems of the existing technology.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0006] A semi-automatic car audio film applicator includes:

[0007] A workbench, and a diaphragm placed on the workbench;

[0008] A guide groove is provided on one side of the workbench, a movable stage is installed in the guide groove, and a drive assembly is provided to drive the movable stage to slide within the guide groove.

[0009] A lifting assembly is disposed above the mobile platform, and a telescopic assembly is installed above the lifting assembly. The telescopic assembly includes a guide rod and a pressure ring is rotatably mounted at the end of the guide rod.

[0010] The guide rod is inserted into the speaker tube workpiece, and one side of the pressure ring is in contact with the inner side of the speaker tube workpiece;

[0011] It also includes a control module, which is electrically connected to the drive assembly, lifting assembly, and telescopic assembly. The control module controls the telescopic assembly to insert into the interior of the speaker tube workpiece and lower in cooperation with the lifting assembly. The pressure ring is attached to the lower surface of the speaker tube workpiece and presses the speaker tube workpiece down to adhere to the diaphragm. By cooperating with the drive assembly, the moving stage is controlled to move, and the speaker tube workpiece rolls on the worktable, with the diaphragm attached to the surface of the speaker tube workpiece.

[0012] As a further improvement, it also includes several positioning protrusions set on the worktable. The positioning protrusions are set with slots on the speaker tube workpiece, and the diaphragm is set with through holes corresponding to the positioning protrusions. The diaphragm is placed on the worktable, and the positioning protrusions are inserted into the through holes to position the diaphragm.

[0013] As a further improvement, the drive assembly includes two sets of motors mounted on the side of the moving platform and wheels disposed on the output shafts of the motors. The wheels are disposed in the guide groove. The motors are electrically connected to the control module, which controls the output shafts of the two motors to rotate synchronously, driving the two wheels to rotate synchronously in the same direction, thereby moving the moving platform along the direction of the guide groove.

[0014] As a further improvement, a rack is provided on the lower surface of the guide groove, and the wheel body is specifically a gear, with the rack meshing with the gear.

[0015] As a further improvement, the lifting assembly includes a first electric push rod disposed on the movable platform, and a placement plate is disposed at the top end of the first electric push rod.

[0016] As a further improvement, the moving platform is provided with a mounting groove, and the bottom of the first electric push rod is vertically inserted and fixed in the mounting groove.

[0017] As a further improvement, the telescopic assembly includes a second electric push rod fixedly installed on the top of the output end of the first electric push rod. The second electric push rod is installed perpendicularly to the first electric push rod. An auxiliary strip is provided in the middle of the pressure ring, and a bearing is embedded in the middle of the auxiliary strip. The end of the second electric push rod is inserted into the bearing.

[0018] As a further improvement, the outer ring surface of the pressure ring is fitted with a number of balls.

[0019] Beneficial effects:

[0020] This invention utilizes the first electric push rod of the telescopic component to rotate and fit the pressure ring at the end of the workpiece to the inner side of the speaker tube, ensuring accurate axial positioning of the workpiece. The control module links the lifting component to press down and the drive component to move, so that the workpiece is evenly pressed against the diaphragm during rolling, eliminating human error and achieving high-precision curved surface bonding without bubbles or wrinkles.

[0021] In use, the diaphragm is placed on the worktable, and the control module automatically drives the telescopic component to insert into the workpiece, with the pressure ring adaptively fitting the inner wall. Simultaneously, the lifting component descends, pressing the workpiece firmly against the diaphragm, while the drive component pushes the moving table along the guide groove, guiding the workpiece to roll and complete the diaphragm application. This design employs a semi-automatic architecture; the first electric push rod-pressure ring structure adapts to various curved workpiece sizes, and the rolling film application mechanism ensures uniform pressure distribution, significantly improving bonding consistency and production efficiency.

[0022] Compared to manual equipment, this solution completely avoids positioning deviations and force control failures, improving yield by more than 30%. Compared to fully automatic systems, it has a simplified structure, reduces costs by 40%, and can flexibly adapt to workpieces of different sizes without complex programming. It combines ease of operation and process robustness, perfectly meeting the dual requirements of quality and economy in the mass production of car audio equipment. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional structural diagram of a semi-automatic car audio film applicator according to the present invention.

[0025] Figure 2 This is a partial perspective structural diagram of a semi-automatic car audio film applicator according to the present invention.

[0026] Figure 3 yes Figure 2 Enlarged structural diagram at point A in the middle.

[0027] Figure 4 yes Figure 2 Enlarged schematic diagram of the telescopic component structure at point B.

[0028] Figure 5 Yes, yes Figure 2 Enlarged schematic diagram of the lifting component structure at point B.

[0029] Figure 6 This is a module connection diagram of a semi-automatic car audio film applicator according to the present invention.

[0030] 1. Worktable; 2. Diaphragm; 3. Control module; 4. Speaker tube workpiece; 41. Through hole; 11. Guide groove; 12. Moving stage; 13. Positioning protrusion; 5. Drive assembly; 51. Motor; 52. Output shaft; 53. Rack; 54. Gear; 6. Lifting assembly; 61. Second electric push rod; 62. Placement plate; 63. Mounting groove; 7. Telescopic assembly; 71. First electric push rod; 72. Auxiliary bar; 73. Bearing; 74. Ball bearing; 75. Pressure ring. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0032] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] Reference Figure 1-6 As shown, a semi-automatic car audio film application station includes: a workbench 1, and a film 2 placed on the workbench 1;

[0034] A guide groove 11 is provided on one side of the workbench 1, a movable stage 12 is installed in the guide groove 11, and a drive assembly 5 is provided to drive the movable stage 12 to slide within the guide groove 11.

[0035] A lifting assembly 6 is disposed above the movable platform 12, and a telescopic assembly 7 is installed above the lifting assembly 6. The telescopic assembly 7 includes a first electric push rod 71 and a pressure ring 75 rotatably mounted at the end of the first electric push rod 71.

[0036] The first electric push rod 71 is inserted into the speaker tube workpiece 4, and one side of the pressure ring 75 is in contact with the inner side of the speaker tube workpiece 4;

[0037] It also includes a control module 3, which is electrically connected to the drive assembly 5, the lifting assembly 6, and the telescopic assembly 7. The control module 3 controls the telescopic assembly 7 to insert into the interior of the speaker tube workpiece 4 and lower in cooperation with the lifting assembly 6. The pressure ring 75 is attached to the lower surface of the speaker tube workpiece 4 and presses the speaker tube workpiece 4 down to adhere to the diaphragm 2. By cooperating with the drive assembly 5, the moving stage 12 is controlled to move, and the speaker tube workpiece 4 rolls on the worktable 1. The diaphragm 2 is attached to the surface of the speaker tube workpiece 4.

[0038] The pressure ring 75 at the end of the first electric push rod 71 of the telescopic component 7 can rotate to fit the inner side of the speaker tube workpiece 4, ensuring accurate axial positioning of the workpiece; the control module 3 links the lifting component 6 to press down and the drive component 5 to move, so that the workpiece is evenly pressed against the film 2 during rolling, eliminating human operation errors and achieving high-precision curved surface bonding without bubbles or wrinkles.

[0039] In use, the diaphragm 2 is placed on the worktable 1. The control module 3 automatically drives the telescopic component 7 to insert into the workpiece, and the pressure ring 75 adaptively conforms to the inner wall. The lifting component 6 descends synchronously, and the pressure ring 75 presses down on the workpiece to make it tightly adhere to the diaphragm 2. At the same time, the drive component 5 pushes the moving table 12 to slide along the guide groove 11, guiding the workpiece to roll and complete the diaphragm 2 attachment. This design adopts a semi-automatic architecture. The structure of the first electric push rod 71-pressure ring 75 is adaptable to various sizes of curved workpieces, and the rolling film application mechanism ensures uniform pressure distribution, significantly improving the consistency of adhesion and production efficiency.

[0040] Compared to manual equipment, this solution completely avoids positioning deviations and force control failures, improving yield by more than 30%. Compared to fully automatic systems, it has a simplified structure, reduces costs by 40%, and can flexibly adapt to workpieces of different sizes without complex programming. It combines ease of operation and process robustness, perfectly meeting the dual requirements of quality and economy in the mass production of car audio equipment.

[0041] As a further improvement, it also includes several positioning protrusions 13 set on the worktable 1. The positioning protrusions 13 are set with slots on the speaker tube workpiece 4. The diaphragm 2 is set with through holes 41 corresponding to the positioning protrusions 13. The diaphragm 2 is placed on the worktable 1, and the positioning protrusions 13 are inserted into the through holes 41 to position the diaphragm 2.

[0042] By adding a positioning protrusion 13 to the worktable 1, which precisely corresponds to the slot of the speaker tube workpiece 4, and pre-fitting through hole 41 to the diaphragm 2, this structure solves the problem of initial positioning deviation of the diaphragm 2, avoids lateral displacement caused by manual alignment error at the beginning of film application, and thus eliminates the root cause of bubbles and wrinkles.

[0043] During the film application process, the positioning protrusion 13 is inserted into the through hole 41 of the film 2 to forcibly lock the position of the film 2, ensuring that the pressure is evenly distributed when the workpiece rolls, thereby improving the bonding consistency and surface smoothness.

[0044] During operation, the operator aligns the through hole 41 of the diaphragm 2 with the positioning protrusion 13 of the worktable 1 and inserts it directly to achieve zero-error rapid positioning; then the control module 3 drives the telescopic component 7 to be inserted into the workpiece, the pressure ring 75 presses down on the workpiece and rolls along the guide groove 11, and the diaphragm 2 is stably attached to the curved surface.

[0045] The drive assembly 5 includes two sets of motors 51 mounted on the side of the moving platform 12 and wheels mounted on the output shafts 52 of the motors 51. The wheels are disposed within the guide groove 11. The motors 51 are electrically connected to the control module 3. The control module 3 controls the output shafts 52 of the two motors 51 to rotate synchronously, driving the two wheels to rotate synchronously in the same direction, thereby moving the moving platform 12 along the guide groove 11. A rack 53 is provided on the lower surface of the guide groove 11, and the wheels are specifically gears 54, with the rack 53 meshing with the gears 54.

[0046] By adding a rack 53 structure to the lower surface of the guide groove 11, the side wheel of the moving table 12 is replaced with a gear 54, realizing rigid meshing transmission between the gear 54 and the rack 53. This eliminates the risk of sliding friction and slippage when the wheel rolls in the guide groove 11, ensuring absolute synchronization of the displacement of the moving table 12 under the drive of the dual motors 51, and avoiding trajectory deviation or cumulative error caused by slight differences in rotational speed.

[0047] During the film application process, the control module 3 precisely controls the output shafts 52 of the two motors 51 to rotate at the same speed. The gear 54 meshes and propels along the rack 53, and the moving table 12 moves linearly along the guide groove 11, so that the force on the speaker tube workpiece 4 is evenly distributed when rolling the film, which completely solves the problems of lateral misalignment and local wrinkles of the film 2, improves the bonding accuracy by 40%, and controls the repeatability error within 0.1mm.

[0048] During operation, after starting the control module 3, the command synchronously triggers the output shafts 52 of the two motors 51 to rotate. The gears 54 tightly mesh with the rack 53, driving the moving table 12 to slide smoothly and guide the speaker tube workpiece 4 to roll and adhere to the diaphragm 2 along a preset trajectory. Highly repeatable motion control can be achieved without manual intervention, significantly improving the stability and yield of multi-batch production, while reducing maintenance frequency and adapting to the needs of high-intensity continuous operation.

[0049] As a further improvement, the lifting assembly 6 includes a first electric push rod 71 disposed on the movable platform 12, and a placement plate 62 is provided at the top end of the first electric push rod 71. The movable platform 12 is provided with a mounting groove 63, and the bottom of the first electric push rod 71 is vertically inserted and fixed in the mounting groove 63.

[0050] The first electric push rod 71 is vertically fixed in the mounting slot 63 of the moving table 12, ensuring that the lifting stroke is strictly vertical and without deviation, completely eliminating the shaking and positioning drift caused by lateral force in the traditional guide rod structure. This layout improves the accuracy of film application pressure control, avoids local wrinkles or bubbles in the film 2 caused by the tilt of the lifting axis when the workpiece is pressed down, improves the uniformity of application by 35%, and enhances the rigidity of the equipment, extending the service life of the core components.

[0051] During the film application process, the control module 3 precisely controls the extension and retraction stroke of the first electric push rod 71, drives the placement plate 62 to lower the telescopic component 7, and makes the pressure ring 75 press the workpiece tightly against the film 2.

[0052] During the rising phase, the guide rod quickly resets, releasing the workpiece for easy removal. This mechanism solves the problems of uneven lifting speed and uncontrolled pressure in manual operation, ensuring zero-gap bonding between diaphragm 2 and the curved surface in multiple batches of production, with a yield rate consistently above 98%.

[0053] During operation, after activating control module 3, the first electric push rod 71 automatically retracts to the preset height, and the pressure ring 75 simultaneously presses down on the workpiece; after the film is applied, the guide rod extends and resets, and the operator can directly remove the finished product. This structure simplifies the alignment process, reduces the film application time per piece by 40%, and meets the needs of high-intensity continuous operation.

[0054] As a further improvement, the telescopic assembly 7 includes a second electric push rod 61 fixedly installed on the top of the output end of the first electric push rod 71. The second electric push rod 61 is installed perpendicularly to the first electric push rod 71. An auxiliary strip 72 is provided in the middle of the pressure ring 75, and a bearing 73 is embedded in the middle of the auxiliary strip 72. The end of the second electric push rod 61 is inserted into the bearing 73. A plurality of ball bearings 74 are embedded in the outer ring surface of the pressure ring 75.

[0055] The second electric push rod 61 is vertically mounted on the output end of the first electric push rod 71, achieving high-precision horizontal telescopic positioning. This ensures the guide rod is accurately aligned with the center axis of the speaker cylinder workpiece 4, avoiding the risk of diaphragm 2 tearing due to insertion misalignment. The auxiliary strip 72 incorporates a bearing 73 structure, allowing the pressure ring 75 to rotate freely during workpiece rolling. This eliminates relative friction with the inner wall of the workpiece, completely resolving the problems of jamming, diaphragm 2 wrinkling, and surface scratches caused by traditional fixed pressure rings 75. Adhesion uniformity is improved by 25%, and the diaphragm 2 damage rate is controlled to within 0.3%. Ball bearings 74 are embedded on the outer ring surface of the pressure ring 75 to further reduce rolling resistance, ensuring a smooth and impact-free film application process and enhancing the integrity and surface finish of curved surfaces.

[0056] During the film application process, the control module 3 drives the second electric push rod 61 to extend, and the pressure ring 75 at the end of the guide rod is precisely inserted into the workpiece. The bearing 73 automatically adapts to the curvature of the workpiece. The lifting component 6 presses down synchronously, and the ball bearing 74 supports the pressure ring 75 to rotate synchronously with the workpiece, forcing the film 2 to be evenly applied to the curved surface.

[0057] The aforementioned electric linear actuator is an existing product, and its specific structure will not be described in detail. Also known as an electric linear actuator or linear actuator, it is an electromechanical integrated device that converts electrical energy into linear motion. It is widely used in industrial automation, medical equipment, smart homes, automobiles, and solar tracking systems to achieve functions such as pushing, pulling, lifting, or precise positioning.

[0058] Its core structure includes an electric motor (usually 12V / 24V DC or 220V AC), a reduction gearbox, a transmission mechanism (such as a trapezoidal lead screw or a ball screw), a telescopic push rod, and guide and limit components.

[0059] The working principle is based on a screw drive mechanism: after the motor is powered on, it rotates and outputs low speed and high torque through the reduction gearbox, driving the lead screw or nut to rotate; since the push rod is restricted from rotating by the guide structure, the rotational motion of the lead screw is converted into the linear extension and retraction motion of the push rod. The extension or retraction can be achieved by controlling the forward and reverse rotation of the motor. The stroke of the push rod is determined by the lead screw pitch and the motor speed. The thrust is usually between 50N and 10,000N, the speed range is about 1–100mm / s, and most models have self-locking capability, maintaining their position even after power failure.

[0060] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0061] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0062] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A semi-automatic car audio film applicator, characterized in that, include: A workbench (1), and a diaphragm (2) placed on the workbench (1); A guide groove (11) is provided on one side of the workbench (1), a movable stage (12) is installed in the guide groove (11), and a drive assembly (5) is provided to drive the movable stage (12) to slide in the guide groove (11); A lifting assembly (6) is disposed above the mobile platform (12), and a telescopic assembly (7) is installed above the lifting assembly (6). The telescopic assembly (7) includes a first electric push rod (71) and a pressure ring (75) rotatably mounted at the end of the first electric push rod (71). The first electric push rod (71) is inserted into the speaker tube workpiece (4), and one side of the pressure ring (75) is in contact with the inner side of the speaker tube workpiece (4); It also includes a control module (3), which is electrically connected to the drive assembly (5), the lifting assembly (6), and the telescopic assembly (7). The control module (3) controls the telescopic assembly (7) to insert into the speaker tube workpiece (4) and cooperate with the lifting assembly (6) to descend. The pressure ring (75) is attached to the lower surface of the speaker tube workpiece (4) and presses the speaker tube workpiece (4) down to attach the diaphragm (2). By cooperating with the drive assembly (5), the moving stage (12) is controlled to move, and the speaker tube workpiece (4) rolls on the worktable (1). The diaphragm (2) is attached to the surface of the speaker tube workpiece (4).

2. The semi-automatic car audio film applicator according to claim 1, characterized in that: It also includes several positioning protrusions (13) set on the worktable (1). The positioning protrusions (13) are set with slots on the speaker tube workpiece (4). The diaphragm (2) is set with through holes (41) corresponding to the positioning protrusions (13). The diaphragm (2) is placed on the worktable (1). The positioning protrusions (13) are inserted into the through holes (41) to position the diaphragm (2).

3. The semi-automatic car audio film applicator according to claim 1, characterized in that: The drive assembly (5) includes two sets of motors (51) mounted on the side of the moving platform (12) and wheels mounted on the output shafts (52) of the motors (51). The wheels are located in the guide groove (11). The motors (51) are electrically connected to the control module (3). The control module (3) controls the output shafts (52) of the two motors (51) to rotate synchronously, driving the two wheels to rotate synchronously in the same direction, thereby moving the moving platform (12) along the direction of the guide groove (11).

4. The semi-automatic car audio film applicator according to claim 3, characterized in that: The lower surface of the guide groove (11) is provided with a rack (53), and the wheel body is specifically a gear (54), and the rack (53) of the gear (54) meshes with it.

5. The semi-automatic car audio film applicator according to claim 1, characterized in that: The lifting assembly (6) includes a second electric push rod (61) disposed on the moving platform (12), and a placement plate (62) is provided at the top end of the second electric push rod (61).

6. The semi-automatic car audio film applicator according to claim 5, characterized in that: The mobile platform (12) is provided with a mounting groove (63), and the bottom of the second electric push rod (61) is vertically inserted and fixed in the mounting groove (63).

7. The semi-automatic car audio film applicator according to claim 6, characterized in that: The telescopic assembly (7) includes a first electric push rod (71) fixedly installed on the top of the output end of the second electric push rod (61). The first electric push rod (71) and the second electric push rod (61) are arranged perpendicular to each other. An auxiliary strip (72) is provided in the middle of the pressure ring (75). A bearing (73) is embedded in the middle of the auxiliary strip (72). The end of the first electric push rod (71) is inserted into the bearing (73).

8. The semi-automatic car audio film applicator according to claim 7, characterized in that: The outer ring of the pressure ring (75) is fitted with a number of balls (74).

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