An integrated pressing manufacturing device for mandolins

Abstract

The present invention discloses a pressing and manufacturing device for integrally formed mandolins, which includes a frame assembly, a backplate pressing mechanism, a front panel pressing mechanism, and a mold forming mechanism. A pressing bracket is provided at one end of the frame assembly. The lower part of the pressing bracket is provided with a backplate pressing mechanism, and the upper part is provided with a front panel pressing mechanism. A material carrier is provided at the other end of the frame assembly. A mold forming mechanism is provided below the material carrier. A working hole for the lifting of the mold forming mechanism is provided at the central part of the material carrier. A rib groove processing mechanism is provided above the material carrier. The structure of the present invention is compact, integrating grooving and pasting. The side plates, backplates, and front panels of the mandolin are automatically pressed on the same device, reducing the cost of equipment investment, reducing the operation processes and operators, and improving the production efficiency and product quality; the fitting is tight and stable, the drying speed is fast, and there is no deformation during the fitting process, effectively improving the production efficiency and quality of the product.

Description

Technical Field

[0001] The present invention belongs to the technical field of musical instrument processing, and particularly relates to a pressing and manufacturing device for integrally forming a mandolin. Background Art

[0002] In the traditional production process of mandolins, the mandolin front panel and back panel are placed in a mold by in-mold pad printing and hot-pressed into a preset outer contour by equipment, which is abbreviated as mold transfer; then, trimming and alignment are carried out with a jig fixture to cut off the excess burrs on the edges of the mold transfer and align the pasting line with the side; the front panel, back panel, and side panel are manually coated with glue; they are fixed with clips and then left to dry naturally for a long time to form. Using this traditional method requires a large amount of manual operation, resulting in low production efficiency of the product and the quality of the product cannot be effectively guaranteed.

[0003] Therefore, developing a device that can improve the bonding and forming quality of the front panel, back panel, and side panel is the key to solving the problem. Summary of the Invention

[0004] The present invention aims to provide a pressing and manufacturing device for integrally forming a mandolin.

[0005] The present invention is realized through the following technical solutions: It includes a frame assembly, a back panel pressing mechanism, a front panel pressing mechanism, and a mold forming mechanism. The back panel pressing mechanism and the mold forming mechanism are arranged in the middle and lower part of the frame assembly, and the front panel pressing mechanism is arranged at the top. The top of the frame assembly is a workbench. On the workbench surface, two conveying rails are symmetrically arranged along the transverse axis direction. A material carrying rack that is slidably matched with the conveying rails is arranged on the conveying rails. A material drive for driving the material carrying rack to move is arranged at any end of the conveying rails. A working hole for the mold forming mechanism to lift and lower is arranged at the central part of the material carrying rack. Two support rails parallel to the conveying rails are symmetrically arranged on the frame assembly below the workbench. A pressing support that is movably matched with the support rails is arranged on the support rails. A support drive for driving the pressing support to move is arranged on the side surface of any end of the support rails. The back panel pressing mechanism is arranged at the lower part of the pressing support, and the front panel pressing mechanism is arranged at the top. At any end of the workbench surface, two processing rails perpendicular to the support rails are arranged, and the processing rails are above the support rails. A processing slide that is slidably matched with the processing rails is arranged on the processing rails. A slide drive for driving the processing slide to move is arranged at any end of the processing rails. A rib groove processing mechanism is suspended on the slide drive through a processing support. The mold forming mechanism is suspended on the workbench surface inside the processing rails and is between the two support rails.

[0006] Furthermore, bearing templates are respectively arranged on both sides of the working hole of the material carrying rack. Heating drives are respectively connected to the front and rear outer ends of each bearing template, and heaters are arranged on each heating drive.

[0007] Further, the die forming mechanism includes a die lifting drive, a mounting frame, a bearing table frame, an inner support die, and an inner support drive. The die lifting drive is arranged on the frame assembly below the workbench surface through the mounting frame. The bearing table frame is arranged on the top of the die lifting drive and is located between the two support guide rails. An inner support die is arranged on the bearing table frame, and several inner support drives connected thereto are arranged inside the inner support die.

[0008] Further, the back panel pressing mechanism includes a back panel drive, a back pressing template, and lifting guide rods. The back panel drive is arranged at the lower part of the pressing support. The back pressing template is arranged on the top of the back panel drive. Lifting guide rods that are slidably matched with the back pressing template are respectively arranged at both ends of the back pressing template, and the lower ends of the lifting guide rods are fixedly connected to the pressing support.

[0009] Further, the front panel pressing mechanism includes a front panel drive, a front pressing template, and lifting guide rods. The front panel drive is arranged at the upper part of the pressing support. The front pressing template is arranged at the lower part of the front panel drive. Lifting guide rods are respectively arranged at both ends of the front pressing template, and the upper ends of the lifting guide rods penetrate upward through the pressing support and are slidably matched with the pressing support.

[0010] Further, the rib groove processing mechanism includes a lifting drive, a lifting slide seat, and a processing drive. The lifting slide seat is suspended on the top of the processing support through a guide rail. A lifting drive is arranged at the top of the guide rail, and the lifting drive is connected to the lifting slide seat. The processing drive is arranged on the lifting slide seat, and a processing tool is arranged at the lower end of the processing drive.

[0011] The beneficial effects of the present invention are as follows: The structure of the present invention is compact, integrating slotting and pasting. The side plates, back plates, and front panels of the mandolin are automatically pressed and combined on the same device, reducing the cost of equipment investment, reducing the operation procedures and operators, and improving the production efficiency and product quality; the fitting is tight and stable, the drying speed is fast, and there is no deformation during the fitting process, effectively improving the production efficiency and quality of the product; it can eliminate the bonding gap dead zone, reduce the probability of the separation of the side plates from the back plates and front panels, reduce the defective rate, save production costs, and further ensure the sound transmission quality inside the mandolin, ultimately achieving the purpose of improving the overall quality and production efficiency of the mandolin musical instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of the present invention;

[0013] Figure 2 is a left - view structural diagram of the present invention;

[0014] Figure 3 is a top - view structural diagram of the present invention;

[0015] Reference numerals in the figure: 1 - frame assembly, 2 - workbench, 3 - conveying guide rail, 4 - material carrier, 5 - material drive, 6 - bearing template, 7 - heating drive, 8 - heater, 9 - pressing bracket, 10 - bracket guide rail, 11 - bracket drive, 12 - processing guide rail, 13 - processing slide, 14 - slide drive, 15 - processing bracket, 16 - rib groove processing mechanism, 17 - lifting drive, 18 - lifting slide, 19 - processing drive, 20 - die forming mechanism, 20a - die lifting drive, 20b - mounting frame, 20c - bearing platform frame, 20d - inner support die, 20e - inner support drive, 21 - back panel pressing mechanism, 21a - back panel drive, 21b - back pressing template, 22 - front panel pressing mechanism, 22 - front panel drive, 22b - front pressing template, 23 - lifting guide rod, 24 - drying nozzle. Detailed implementation mode

[0016] In order to enable those skilled in the art of the present technology to better understand the technical solution of the present invention, the following will provide a detailed description of its specific implementation mode in conjunction with the accompanying drawings.

[0017] As Figures 1 to 3 shown in the mandolin integrated molding pressing and manufacturing equipment, which includes a frame assembly 1, a back panel pressing mechanism 21, a front panel pressing mechanism 22 and a die forming mechanism 20. The back panel pressing mechanism 21 and the die forming mechanism 20 are arranged in the middle and lower part of the frame assembly 1, and the front panel pressing mechanism 22 is arranged at the top. The top of the frame assembly 1 is a workbench 2. On the tabletop of the workbench 2, two conveying guide rails 3 are symmetrically arranged along its transverse axis direction. A material carrier 4 that is slidably matched with the conveying guide rails 3 is arranged on the conveying guide rails 3. A material drive 5 for driving the material carrier 4 to move is arranged at any end of the conveying guide rails 3. A working hole for the die forming mechanism 20 to lift is arranged at the central part of the material carrier 4. On the frame assembly 1 below the workbench 2, two bracket guide rails 10 parallel to the conveying guide rails 3 are symmetrically arranged. A pressing bracket 9 that is movably matched with the bracket guide rails 10 is arranged on the bracket guide rails 10. A bracket drive 11 for driving the pressing bracket 9 to move is arranged on the side surface of any end of the bracket guide rails 10. The back panel pressing mechanism 21 is arranged at the lower part of the pressing bracket 9, and the front panel pressing mechanism 22 is arranged at the top. At any end of the tabletop of the workbench 2, two processing guide rails 12 perpendicular to the bracket guide rails 10 are arranged, and the processing guide rails 12 are above the bracket guide rails 10. A processing slide 13 that is slidably matched with the processing guide rails 12 is arranged on the processing guide rails 12. A slide drive 14 for driving the processing slide 13 to move is arranged at any end of the processing guide rails 12. A rib groove processing mechanism 16 is suspended on the processing slide 14 through a processing bracket 15. The die forming mechanism 20 is suspended on the tabletop of the workbench 2 inside the processing guide rails 12, and the die forming mechanism 20 is between the two bracket guide rails 10.

[0018] Carrying templates 6 are respectively arranged on both sides of the working holes of the material carrying rack 4, heating drives 7 are respectively connected and arranged on the outer sides of the front and rear ends of each carrying template 6, and heaters 8 are arranged on each heating drive 7.

[0019] The die forming mechanism 20 includes a die lifting drive 20a, a mounting frame 20b, a carrying platform frame 20c, an inner support die 20d, and an inner support drive 20e. The die lifting drive 20a is arranged on the frame assembly 1 below the table surface of the workbench 2 through the mounting frame 20b. The carrying platform frame 20c is arranged on the top of the die lifting drive 20a, and the carrying platform frame 20c is located between the two support guide rails 10. The inner support die 20d is arranged on the carrying platform frame 20c, and several inner support drives 20e connected thereto are arranged inside the inner support die 20d.

[0020] The back panel pressing mechanism 21 includes a back panel drive 21a, a back pressing template 21b, and a lifting guide rod 23. The back panel drive 21a is arranged at the lower part of the pressing support 9, the back pressing template 21b is arranged on the top of the back panel drive 21a, lifting guide rods 23 are respectively arranged at both ends of the back pressing template 21b and are in sliding fit with it, and the lower ends of the lifting guide rods 23 are fixedly connected to the pressing support 9.

[0021] The front panel pressing mechanism 22 includes a front panel drive 22a, a front pressing template 22b, and a lifting guide rod 23. The front panel drive 22a is arranged at the upper part of the pressing support 9, the front pressing template 22b is arranged at the lower part of the front panel drive 22a, lifting guide rods 23 are respectively arranged at both ends of the front pressing template 22b, and the upper ends of the lifting guide rods 23 penetrate upward through the pressing support 9 and are in sliding fit with the pressing support 9.

[0022] The rib groove processing mechanism 16 includes a lifting drive 17, a lifting slide seat 18, and a processing drive 19. The lifting slide seat 18 is suspended on the top of the processing support 15 through a guide rail. The lifting drive 17 is arranged at the top of the guide rail and is connected to the lifting slide seat 18. The processing drive 19 is arranged on the lifting slide seat 18, and a processing tool is arranged at the lower end of the processing drive 19.

[0023] A chain drive connection or a belt drive connection is provided between the pressing support 9 and the support drive 11, and the support drive 11 is a servo motor.

[0024] A chain drive connection or a belt drive connection is provided between the material carrying rack 4 and the material drive 5, and the material drive 5 is a servo motor.

[0025] A groove for the movement of the pressing support 9 is formed on the workbench 2.

[0026] At least four drying nozzles 24 are provided on the panel pressing mechanism 22, and the drying nozzles 24 are respectively arranged at the edges of each side of the surface pressing template 22b. The drying nozzles 24 are connected to a drying fan through an air pipe, and the drying fan is a fan with a heating function.

[0027] The processing bracket 15 is arranged in an L-shaped structure.

[0028] An airbag is arranged on the outer side of the inner support mold 20d, or vacuum suction cups are provided. The airbag or vacuum suction cups are provided with air pipes connected to an air extractor.

[0029] An airbag is arranged on the inner side of the bearing template 6, or vacuum suction cups are provided. The airbag or vacuum suction cups are provided with air pipes connected to an air extractor. The airbag or vacuum suction cups adsorb and fix the side plates, adopting flexible fixation to avoid damage to the side plates and improve the fitting property, thereby ensuring the shape standard of the product.

[0030] The mold lifting drive 20a, the back plate drive 21a, and the panel drive 22a are cylinders or hydraulic cylinders.

[0031] The slide drive 14, the lifting drive 17, and the processing drive 19 are motors. The slide drive 14 is connected to drive the processing slide 13 through a lead screw, and the lifting drive 17 is connected to drive the lifting slide 18 through a lead screw.

[0032] The bracket drive 11, the material drive 5, the mold lifting drive 20a, the back plate drive 21a, the panel drive 22a, the slide drive 14, the lowering drive, and the lifting processing drive 19 are all signal-connected to a control device, and the control device is a single-chip microcomputer or a PLC programmable logic controller.

[0033] The heater 8 is an electric heater or a hot air blower.

[0034] The heating drive 7 is a cylinder or a hydraulic cylinder.

[0035] The working mode of the present invention: 1. The mold lifting drive 20a of the mold forming mechanism 20 rises to make the bearing platform 20c level with the material bearing frame 4. The inner support drive 20e resets to keep the inner support mold 20d in a contracted and closed state. Then, the formed side plates are placed into the bearing template 6 of the material bearing frame 4, and the joints brushed with glue are placed at both ends of the side plates;

[0036] 2. Start the inner support drive 20e to push the inner support mold 20d outwards. The inner support mold 20d opens to make the side plates closely adhere to the inner wall of the bearing template 6. The airbag or vacuum suction cups on the bearing template 6 are attached to the side plates. Then, the heating drive 7 is started to push the heater 8 to the joint part for heat setting, so that the side plates and the joints are firmly bonded together;

[0037] 3. The slide drive 14 drives the processing slide 13 to move along the processing guide rail 12 to directly above the material carrier 4, so that the rib groove processing mechanism 16 is suspended above the bonded side plate. Subsequently, the lifting drive 17 drives the lifting slide 18 to descend. At this time, the side plate is fixed in the bearing template 6, and the processing drive 19 drives the processing tool to mill the rib grooves on the bonded side plate.

[0038] 4. After the rib grooves are milled, the lifting drive 17 drives the lifting slide 18 to rise and reset, the die lifting drive 20a drives the carrier frame to descend and reset, and exits the material carrier 4. The material drive 5 drives the material carrier 4 and the side plate thereon to move rightward by a certain distance, and a back plate coated with glue is placed in the back pressure bonding template 21b.

[0039] 5. The bracket drive 11 drives the pressing bracket 9 to move above the side plate. The back plate drive 21a drives the back pressure bonding template 21b provided with the back plate to rise and stick to the bottom surface of the side plate. The panel drive 22a drives the surface pressure bonding template 22b to press down. By the combined force of the back plate drive 21a and the panel drive 22a, the side plate and the back plate are closely attached, and then the pressing process of the mandolin side plate and the back plate is completed.

[0040] 6. The panel drive 22a drives the surface pressure bonding template 22b to rise, places the panel coated with glue on the top of the side plate, and then controls the panel drive 22a to drive the surface pressure bonding template 22b to descend and press on the panel, so that the panel and the side plate are closely attached. After the attachment is completed, it is taken off from the bearing template 6 to complete the pasting and forming operation of the mandolin body.

[0041] During the above process of attaching the back plate, to improve the drying efficiency of the glue, according to the properties of the glue, cold air or hot air can be blown to the side plate and the panel through the drying nozzle 24 to accelerate the drying speed.

Claims

1. An integrally formed pressing and manufacturing device for a mandolin, comprising a frame assembly (1), a back panel pressing mechanism (21), a front panel pressing mechanism (22), and a die forming mechanism (20). The back panel pressing mechanism (21) and the die forming mechanism (20) are arranged in the middle and lower part of the frame assembly (1), and the front panel pressing mechanism (22) is arranged at the top. It is characterized in that: The top of the frame assembly (1) is a workbench (2). Along the transverse axis direction of the workbench (2) surface, two conveying rails (3) are symmetrically arranged. A material carrier (4) that is slidably matched with the conveying rails (3) is arranged on the conveying rails (3). A material drive (5) for driving the material carrier (4) to move is arranged at any one end of the conveying rails (3). A working hole for the lifting of the mold forming mechanism (20) is arranged at the central part of the material carrier (4). On the frame assembly (1) below the workbench (2), two support rails (10) parallel to the conveying rails (3) are symmetrically arranged. A pressing support (9) that is movably matched with the support rails (10) is arranged on the support rails (10). A support drive (11) for driving the pressing support (9) to move is arranged on the side surface of any one end of the support rails (10). A backplate pressing mechanism (21) is arranged at the lower part of the pressing support (9), and a panel pressing mechanism (22) is arranged at the top. At any one end of the workbench (2) surface, two processing rails (12) perpendicular to the support rails (10) are arranged, and the processing rails (12) are above the support rails (10). A processing slide (13) that is slidably matched with the processing rails (12) is arranged on the processing rails (12). A slide drive (14) for driving the processing slide (13) to move is arranged at any one end of the processing rails (12). A rib groove processing mechanism (16) is suspended on the slide drive (14) through a processing bracket (15). A mold forming mechanism (20) is suspended on the workbench (2) surface inside the processing rails (12), and the mold forming mechanism (20) is between the two support rails (10).

2. The mandolin integrally formed pressing and manufacturing equipment according to claim 1, wherein: Carrying templates (6) are respectively arranged on both sides of the working hole of the material carrier (4). Heating drives (7) are respectively connected and arranged on the outer sides of the front and rear ends of each carrying template (6). Heaters (8) are arranged on each heating drive (7).

3. The mandolin integrally formed pressing and manufacturing equipment according to claim 1, characterized in that: The mold forming mechanism (20) includes a mold lifting drive (20a), a mounting frame (20b), a carrying platform frame (20c), an inner support mold (20d), and an inner support drive (20e). The mold lifting drive (20a) is arranged on the frame assembly (1) below the workbench (2) surface through the mounting frame (20b). The carrying platform frame (20c) is arranged at the top of the mold lifting drive (20a), and the carrying platform frame (20c) is between the two support rails (10). An inner support mold (20d) is arranged on the carrying platform frame (20c). Several inner support drives (20e) connected to it are arranged inside the inner support mold (20d).

4. The mandolin integrally formed pressing and manufacturing device according to claim 1, wherein: The backplate pressing mechanism (21) includes a backplate drive (21a), a back pressing template (21b), and lifting guide rods (23). The backplate drive (21a) is arranged at the lower part of the pressing support (9). The back pressing template (21b) is arranged at the top of the backplate drive (21a). Lifting guide rods (23) that are slidably matched with the back pressing template (21b) are respectively arranged at both ends of the back pressing template (21b). The lower ends of the lifting guide rods (23) are fixedly connected to the pressing support (9).

5. The mandolin one-piece pressing and manufacturing device according to claim 1, characterized in that: The described panel pressing mechanism (22) includes a panel drive (22a), a surface pressing template (22b), and lifting guide rods (23). The panel drive (22a) is arranged at the upper part of the pressing bracket (9), the surface pressing template (22b) is arranged at the lower part of the panel drive (22a), and lifting guide rods (23) are respectively arranged at both ends of the surface pressing template (22b). The upper ends of the lifting guide rods (23) penetrate upward through the pressing bracket (9) and are slidably engaged with the pressing bracket (9).

6. The mandolin integrally formed pressing and manufacturing device according to claim 1, wherein: The described ribbed wood groove processing mechanism (16) includes a lifting drive (17), a lifting slide base (18), and a processing drive (19). The lifting slide base (18) is suspended at the top of the processing bracket (15) through a guide rail. A lifting drive (17) is arranged at the top of the guide rail, and the lifting drive (17) is connected to the lifting slide base (18). The processing drive (19) is arranged on the lifting slide base (18), and a processing tool is arranged at the lower end of the processing drive (19).

7. The mandolin integrally formed pressing and manufacturing device according to claim 1, characterized in that: A chain drive connection or a belt drive connection is provided between the pressing bracket (9) and the bracket drive (11), and the bracket drive (11) is a servo motor.

8. The mandolin integrally formed pressing and manufacturing device according to claim 1, characterized in that: A chain drive connection or a belt drive connection is provided between the material carrier (4) and the material drive (5), and the material drive (5) is a servo motor.

9. The mandolin integrally formed pressing and manufacturing device according to claim 1, wherein: A groove for the movement of the pressing bracket (9) is formed on the workbench (2).

10. The mandolin integrally formed pressing and manufacturing device according to claim 1 or 5, characterized in that: At least four drying nozzles (24) are provided on the described panel pressing mechanism (22). The drying nozzles (24) are respectively arranged at the edges of each side of the surface pressing template (22b). The drying nozzles (24) are connected to a drying fan through an air pipe, and the drying fan is a fan with a heating function.

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