Speaker assembly production line and speaker assembly method

Abstract

The invention discloses a speaker assembly production line and a speaker assembly method, comprising an internal inspection device, an ultra-welding welding device, a magnetic return assembly coating device and an imprinting magnetizing device arranged in a process sequence; the internal inspection device is provided with a semi-finished product feeding mechanism, a CCD inspection mechanism and a manual inspection station; the ultra-welding welding device is provided with a semi-finished product transfer mechanism, an upper cover feeding mechanism, an upper cover positioning assembly mechanism, an ultrasonic welding mechanism and a product height inspection mechanism; the magnetic return assembly coating device is provided with a magnetic return pressing mechanism, a magnetic return dispensing mechanism, a coating inspection mechanism and a drying furnace; and the imprinting magnetizing device is provided with an imprinting mechanism, a magnetizing mechanism and a magnetizing inspection mechanism; in this way, the automatic assembly process of the semi-finished product, the upper cover and the magnetic return of the speaker is realized, and the assembly efficiency, assembly precision and assembly quality consistency are effectively improved. The entire production line can be operated by one person, which reduces the labor cost and is conducive to the mass production of the speaker.

Description

Technical Field

[0001] The present invention relates to the field of speaker assembly technology, and in particular to a speaker assembly production line and a speaker assembly method. Background Art

[0002] Speakers (also called loudspeakers) are used to convert electrical signals into audio signals for playback and have been widely used in people's lives, such as homes, offices, and car applications. In traditional technology, most processes of speakers require manual work, and the entire process often requires multiple people to achieve balanced production across the entire line, which consumes high labor costs. In addition, manual work is inefficient, and the quality of work depends on the high skill requirements of the operators. Therefore, the assembly quality will vary with the proficiency of different technicians, and it is difficult to ensure the consistency of assembly quality.

[0003] Later, some automated devices gradually appeared to assist in assembling speakers. However, the connection between devices still required manual operation. The equipment was scattered throughout the workshop, and each device required dedicated monitoring. This resulted in a low level of automation and limited production efficiency.

[0004] Therefore, it is necessary to develop a new technical solution to solve the above problems. Summary of the invention

[0005] In view of this, the present invention aims to address the deficiencies in the prior art, and its main purpose is to provide a speaker assembly production line and a speaker assembly method, which realize the automatic assembly process of the semi-finished product, upper cover, and magnetic return of the speaker, effectively improving the assembly efficiency, assembly accuracy and assembly quality consistency. The entire production line can be operated by one person, which reduces labor costs and is conducive to the mass production of speakers.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A speaker assembly production line includes internal inspection equipment, super welding equipment, magnetic assembly coating equipment and engraving and magnetization equipment arranged in a process sequence; wherein:

[0008] The internal inspection equipment is provided with a semi-finished product feeding mechanism, a CCD inspection mechanism, and a manual inspection station;

[0009] The super welding device is provided with a semi-finished product transfer mechanism connected to the output end of the internal inspection device, an upper cover feeding mechanism, an upper cover positioning and assembling mechanism, an ultrasonic welding mechanism, and a product height inspection mechanism;

[0010] The magnetic return assembly coating equipment is provided with a magnetic return pressing mechanism, a magnetic return dispensing mechanism, and a coating inspection mechanism. The magnetic return pressing mechanism has an input side connected to a magnetic return load transfer mechanism, and the magnetic return pressing mechanism has an input side connected to the output end of the super welding device; the magnetic return assembly coating equipment is equipped with a drying furnace;

[0011] Furthermore, the imprinting and magnetizing equipment is provided with an imprinting mechanism, a magnetizing mechanism, and a magnetizing inspection mechanism.

[0012] A speaker assembly method includes the following assembly steps:

[0013] Step 1: Prepare the semi-finished product, cover and magnetic return;

[0014] Step 2: Conduct internal inspection on semi-finished products, first perform CCD automatic inspection on some items, and then manually inspect other items after checking qualified products;

[0015] Step 3: After the CCD automatic inspection and manual inspection, the qualified products are automatically sent to the super welding equipment. At the same time, the upper cover is automatically sent to the super welding equipment, the upper cover is positioned, assembled and ultrasonically welded to the semi-finished product, and the product height is inspected;

[0016] Step 4: The magnetic return is automatically fed in and assembled and positioned with qualified products after product height inspection, and then pressed and positioned by the magnetic return pressing mechanism, and then the magnetic return glue dispensing and coating inspection are carried out; the qualified products after coating inspection enter the drying oven;

[0017] Step 5: The dried product is automatically sent to the engraving and magnetizing equipment, and the engraving, magnetizing and magnetizing inspection are automatically carried out in sequence.

[0018] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical scheme that it mainly realizes the automatic assembly process of the semi-finished product, upper cover and magnetic return of the speaker through the arrangement of internal inspection equipment, super welding equipment, magnetic return assembly coating equipment and printing and magnetization equipment. The semi-finished product, upper cover and magnetic return loading, assembly welding and defect detection of the upper cover and semi-finished product, magnetic return assembly dispensing and coating detection, printing, magnetization, magnetization inspection, etc. are all completed in a continuous and automated operation on the production line, which effectively improves the assembly efficiency, assembly accuracy and assembly quality consistency. The entire production line can be operated by one person, which reduces the labor cost and is conducive to the mass production of speakers.

[0019] In order to more clearly illustrate the structural features, technical means and specific purposes and functions achieved by the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a front view of a speaker assembly production line according to an embodiment of the present invention;

[0021] Figure 2 is a top view of a speaker assembly production line according to an embodiment of the present invention;

[0022] Figure 3 This is a representative diagram of a speaker assembly production line according to an embodiment of the present invention applied to a full-line layout;

[0023] Figure 4 It is a schematic diagram of the assembly process of an embodiment of the present invention (illustrating the changing state of the product);

[0024] Figure 5 is a top view of an endoscopy device according to an embodiment of the present invention;

[0025] Figure 6 is a diagram showing another design of an endoscopy device according to an embodiment of the present invention;

[0026] Figure 7 yes Figure 6 A diagram illustrating the turntable station of the structure shown;

[0027] Figure 8 is a top view of a super welding device according to an embodiment of the present invention;

[0028] Fig. 9 It is a partial diagram of the upper cover positioning assembly mechanism of the super welding equipment;

[0029] Fig.10 It is a three-dimensional diagram of a semi-finished product transfer mechanism of a super welding device;

[0030] Fig.11 It is a three-dimensional diagram from another angle of the semi-finished product transfer mechanism of the super welding equipment;

[0031] Fig.12 It is a partial structural diagram of a semi-finished product transfer mechanism of a super welding device;

[0032] Fig.13 It is a three-dimensional diagram of the upper cover feeding mechanism of the super welding equipment;

[0033] Fig.14 It is a partial structural diagram of the upper cover feeding mechanism of the super welding equipment;

[0034] Fig.15 It is another partial structural diagram of the upper cover feeding mechanism of the super welding equipment;

[0035] Fig.16 is a top view of a magnetic assembly coating device according to an embodiment of the present invention;

[0036] Fig.17 is a three-dimensional diagram of an automatic transport mechanism according to an embodiment of the present invention;

[0037] Fig.18 yes Fig.17 A partial enlarged diagram of

[0038] Fig.19 1 is a front view of an automatic transport mechanism according to an embodiment of the present invention (partial view is shown);

[0039] Fig. 20 is a three-dimensional diagram of a double-layer extension mechanism of an automatic transport mechanism according to an embodiment of the present invention;

[0040] Fig.21 It is a top view of the engraving and magnetizing equipment according to an embodiment of the present invention. DETAILED DESCRIPTION

[0041] Please refer to Figures 1 to 21 As shown, it shows the specific structure of an embodiment of the present invention.

[0042] A speaker assembly production line includes an internal inspection device 1, an ultra-welding and welding device 2, a magnetic return assembly coating device 3 and an imprinting and magnetizing device 4 arranged in a process sequence; wherein: the internal inspection device 1 is provided with a semi-finished product feeding mechanism 101, a CCD inspection mechanism 11, and a manual inspection station 12; the ultra-welding and welding device 2 is provided with a semi-finished product transfer mechanism, an upper cover feeding mechanism, an upper cover positioning and assembly mechanism, an ultrasonic welding mechanism, and a product height inspection mechanism connected to the output end of the internal inspection device 1; the magnetic return assembly coating device 3 is provided with a magnetic return pressing mechanism, a magnetic return dispensing mechanism, and a coating inspection mechanism, the magnetic return pressing mechanism has an input side connected to a magnetic return transfer and loading mechanism, and the magnetic return pressing mechanism has an input side connected to the output end of the ultra-welding and welding device 2; the magnetic return assembly coating device 3 is equipped with a drying furnace; and the imprinting and magnetizing device 4 is provided with an imprinting mechanism, a magnetizing mechanism, and a magnetizing inspection mechanism. By setting up the internal inspection equipment 1, super welding equipment 2, magnetic return assembly coating equipment 3 and engraving and magnetization equipment 4, the automatic assembly process of the speaker semi-finished product, upper cover and magnetic return is realized, and the loading of semi-finished products, upper cover and magnetic return, assembly welding and defect detection of upper cover and semi-finished products, magnetic return assembly dispensing and coating detection, engraving, magnetization, magnetization inspection, etc. are all completed in a continuous and automated manner on the production line.

[0043] Taking into account the conveying continuity of the production line, a circulating conveying jig is adopted to reflux along the closed-loop conveying mechanism. In this embodiment, an upper jig conveying mechanism and a lower jig reflux mechanism are arranged along the internal inspection equipment 1, the super welding equipment 2, the magnetic reassembly coating equipment 3 and the imprinting magnetization equipment 4. A jig ascending mechanism is arranged on the input side of the internal inspection equipment 1, and a jig descending mechanism is arranged on the output side of the imprinting magnetization equipment 4. The jig ascending mechanism and the jig descending mechanism are respectively connected to the corresponding ends of the upper jig conveying mechanism and the lower jig reflux mechanism.

[0044] Specifically:

[0045] like Figures 1 to 4 As shown, the production line composed of the internal inspection equipment 1, the super welding equipment 2, the magnetic return assembly coating equipment 3 and the imprinting and magnetizing equipment 4 mainly refers to the second half of the speaker production line, and the input side of the internal inspection equipment 1 is connected to the first half of the speaker production line, which is used to produce the semi-finished product, the magnetic return and the upper cover. At the output side of the second half of the production line, the product is carried by a tray into the reflow furnace 5 for aging, and then enters the inspection section. In the second half of the production line, the following processes will be carried out in sequence: the product is transferred from the first half to the second half, CCD internal inspection, manual internal inspection, lid insertion, ultrasonic melting, the product returns to the conveying jig of the upper jig conveying mechanism, magnetic re-insertion, coating (a spare coating link can also be set up), coating inspection, layout and NG removal (here it needs to enter the drying furnace, also referred to as the oven, in the form of a tray), the whole board is transferred, the dried product is put in, laser engraving, the engraved product is transferred to the conveying jig of the upper jig conveying mechanism, automatic magnetization, layout and entering the reflow oven 5, the tray is reflowed to the layout place in the form of an empty tray at the output side of the reflow oven 5, and the product after aging in the reflow oven 5 is transferred to the inspection project as a whole board.

[0046] like Figure 5 As shown, the CCD inspection mechanism is provided with a CCD inspection station located on the upper jig conveying mechanism, which performs CCD inspection on the front side of the product, then turns the product over through the turning mechanism, then performs CCD inspection on the back side of the product, then turns the product over to the front side and conveys it to the manual inspection station on the conveying jig along the upper jig conveying mechanism;

[0047] like Figure 6 and Figure 7As shown, it shows another design scenario of the endoscopic inspection device 1; the CCD inspection mechanism of the endoscopic inspection device 1 includes a CCD inspection turntable, a plurality of first turntable fixtures arranged at circumferential intervals on the CCD inspection turntable, and each first turntable fixture is provided with a double product position; a CCD inspection loading station, a CCD inspection station, a first product front and back flipping and shifting station, and a second product front and back flipping and shifting station are arranged at intervals around the CCD inspection turntable; the CCD inspection loading station is connected to the semi-finished product feeding mechanism, the CCD inspection station is equipped with a CCD, the first product front and back flipping and shifting station is equipped with a first flipping and shifting robot to flip the front and back of the product and move it from one product position on the first turntable fixture to another product position, and the second product front and back flipping and shifting station is equipped with a second flipping and shifting robot to flip the front and back of the product and move it from the first turntable fixture to the conveying fixture of the upper fixture conveying mechanism.

[0048] The input side of the internal inspection device 1 is the first half of the process of connecting the speaker, such as Figure 3 As shown, it specifically refers to the front half of the production line for making the upper cover, semi-finished product and magnetic return. It can include three small production lines, namely: respectively used for making and / or assembling and / or conveying the semi-finished product, the upper cover and the magnetic return. The input side of the internal inspection equipment 1 is a small production line for docking the semi-finished product. The conveying jig rises from the input side of the internal inspection equipment 1 and flows back to the upper jig conveying mechanism. The semi-finished product input mechanism takes out the semi-finished product (specifically the semi-finished product on the semi-front conveyor belt) and places it on the first turntable jig corresponding to the CCD inspection loading station, as shown in FIG. Figure 7As shown, if its initial placement position is ①, when the first turntable fixture rotates to the CCD inspection station with the CCD inspection turntable, the semi-finished product placement position becomes ②, and when it is transferred to the second product front and back flipping and shifting station, the semi-finished product placement position becomes ③, and when it is transferred to the first product front and back flipping and shifting station, the semi-finished product placement position becomes ④. The first flipping and shifting manipulator flips the front and back of the product and moves from ④ to ⑤, and then transfers to the initial placement position ⑥. At this time, the semi-finished product feeding mechanism takes out another semi-finished product (specifically the semi-finished product on the semi-front conveyor belt) and places it on the CCD inspection The semi-finished product at position ① on the first turntable jig corresponding to the material station, and the semi-finished product at position ⑥ will continue to be transferred to the CCD inspection station and located at position ⑦. The CCD is equipped with a driving mechanism such as a cylinder to drive it to move, so that the front semi-finished product and the back semi-finished product on the first turntable jig can be inspected respectively, which is equivalent to the semi-finished product at position ⑦ at this time, which has completed the front and back inspections; when it is transferred to the second product front and back flipping and shifting station again, the placement position of the semi-finished product at position ⑦ becomes position ⑧, and the second flipping and shifting manipulator flips the front and back of the semi-finished product at position ⑧ and moves it from the first turntable jig to the conveying jig of the upper jig conveying mechanism at position 9. In actual design, a defective elimination mechanism can be configured on the outside of the upper jig conveying mechanism. If it is a defective product, the second flipping and shifting manipulator can directly use the single-sided inspection or double-sided inspection The defective product is moved from the second product front and back flipping and shifting station to the defective elimination mechanism. For defective products, they can be directly transferred without flipping.

[0049] The CCD inspection mechanism is combined with manual inspection. Usually, at least half of the inspection items are completed by the CCD inspection mechanism, which shares some or most of the items of manual inspection in traditional technology, reduces manual fatigue and improves efficiency. The manual inspection station is usually equipped with a display and an electronic magnifying glass. The operator takes out the product from the upper jig conveying mechanism, and after the inspection with the electronic magnifying glass, it is placed on the upper jig conveying mechanism and flows to the next station; the defective products inspected manually are placed in the defective product collection area. Preferably, for the CCD inspection link, the processing quality of the semi-finished product is inspected, and the semi-finished product with foreign matter or stains on the surface is also inspected. If the semi-finished product with foreign matter or stains on the surface is directly discharged, it can be processed by manual processing outside the automatic line to remove the foreign matter and stains.

[0050] like Figures 8 to 15As shown, the super welding equipment 2 also includes a super welding turntable 202, and a plurality of second turntable fixtures arranged at circumferential intervals on the super welding turntable 202; a super welding loading station 21, an upper cover positioning assembly station 22, an ultrasonic welding station 23, a product suction dust removal station 24, a product height inspection station 25, and a turntable fixture cleaning station 26 are arranged around the super welding turntable 202; the semi-finished product transfer mechanism 201 is connected to the output end of the internal inspection equipment 1 and the super welding loading station 21. The upper cover positioning and assembly mechanism 203 is arranged corresponding to the upper cover positioning and assembly station 22, the ultrasonic welding mechanism is arranged corresponding to the ultrasonic welding station 23, the product air suction and dust removal station 24 is provided with an air suction and dust removal mechanism, the product height inspection mechanism is arranged corresponding to the product height inspection station 25, and the turntable jig cleaning station 26 is provided with a turntable jig cleaning mechanism; and a product flipping and transferring mechanism 204 is also arranged to move qualified products from the product height inspection station 25 back to the conveying jig of the upper jig conveying mechanism 6.

[0051] like Figure 8 As shown, similarly, a defective elimination mechanism 205 can be arranged on the outside of the upper jig conveying mechanism. If it is a defective product, the defective product can be directly moved from the product height inspection station to the defective elimination mechanism 205 using the product flipping and transferring mechanism 204. For defective products, they can be directly transferred without flipping.

[0052] like Fig. 9 As shown, the upper cover positioning and assembly mechanism includes an upper cover conveying coarse positioning mechanism and an upper cover fine positioning, cleaning and direction determination mechanism, and also includes a coarse positioning robot and a fine positioning robot. The coarse positioning robot and the fine positioning robot preferably share a common drive for synchronous displacement action. The coarse positioning robot moves the upper cover from the upper cover feeding mechanism to the upper cover conveying coarse positioning mechanism, and the upper cover after coarse positioning is then sent to the upper cover fine positioning, cleaning and direction determination mechanism for secondary positioning. At the same time, the upper cover is cleaned by the upper cover cleaning mechanism, and inspected and determined by the upper cover direction determination mechanism. The upper cover with the wrong direction is transferred to the upper cover bad direction placement box by the fine positioning robot, and the qualified products are transferred to the upper cover positioning and assembly station of the super welding turntable by the fine positioning robot.

[0053] like Fig.10 and Fig.12As shown, the semi-finished product transfer mechanism is a multifunctional clamping mechanism, which includes a base frame 1011, a transfer plate 1012 which can be installed on the base frame 1011 in an X-axial displacement manner, and a flipping robot 1013 and a direction adjustment robot 1014 which can be installed on the transfer plate 1012 in a Z-axial displacement manner; the flipping robot 1013 and the direction adjustment robot 1014 are arranged along the X-axial spacing; the base frame 1011 is connected to a product placement table 1015, and the flipping robot 1013 is provided with a flipping cylinder 1016, so that the flipping robot 1013 can flip the front and back of the product after clamping the product; the transfer plate 1012 is equipped with a material detection sensor 1017 for detecting the direction of the product, and the direction adjustment robot 1014 is provided with a horizontal rotation motor 1018, so that the horizontal rotation angle of the product can be corrected after the direction adjustment robot 1014 clamps the product. Here, a U-shaped frame 1019 is installed on the transfer plate 1012, and its two side walls are respectively located on both sides of the direction adjustment robot 1014. The direction adjustment robot 1014 can be displaced in the Z-axis direction in the area between the two side walls; the clamping mechanism has multiple functions such as flipping the front and back of the product, direction detection and correction, and product transfer, which simplifies the mechanism structure, is more suitable for application on automated equipment, and is highly practical.

[0054] The flipping robot 1013 and the direction adjustment robot 1014 both use independent Z-axis driving devices, such as cylinders, while the transfer plate 1012 is controlled by an electric cylinder to move in the X-axis direction.

[0055] The flipping robot 1013 has two clamping jaws arranged on opposite sides and a clamping jaw cylinder for controlling the opening and closing of the clamping jaws. The flipping cylinder 1016 controls the clamping jaw cylinder and the clamping jaws to flip together.

[0056] The direction adjustment manipulator 1014 uses a four-claw cylinder to control the clamping and opening, and its horizontal rotation motor 1018 is installed at the upper end of the direction adjustment manipulator 1014 to drive its horizontal rotation. The direction adjustment manipulator 1014 has a blanking pre-pressing plate 1022 and an elastic member 1020 (such as a vertically extending compression spring) that provides the blanking pre-pressing plate 1022 with downward pre-pressure. The lower end of the elastic member 1020 acts on the blanking pre-pressing plate 1022, and the upper end of the elastic member 1020 is relatively fixed, so that the blanking pre-pressing plate 1022 can float and move up and down. Here, the blanking pre-pressing plate 1022 is provided with a clearance hole, and the claws of the four-claw cylinder pass through the clearance hole to clamp the four sides of the product, and the bottom of the blanking pre-pressing plate 1022 is provided with four pre-pressing protrusions 1021 protruding downward, which are used to press against the top of the four corners of the product. When the direction adjustment robot 1014 grabs the product, it first descends to make the unloading pre-pressure plate 1022 press against the top of the four corners of the product to generate a certain pre-pressure, and then closes the four claws inward to clamp the four sides of the product. After completing the direction detection and direction correction of the product, the direction adjustment robot 1014 transfers the product to the second turntable fixture on the super welding turntable corresponding to the super welding loading station. After the claws of the four-claw cylinder are opened, the unloading pre-pressure plate 1022 pushes the product downward to achieve accurate and fast unloading. Compared with the method of unloading relying entirely on the product's own weight, with the help of the downward pre-pressure of the unloading pre-pressure plate 1022, it is easier to align the product and ensure the positioning accuracy when placed in the second turntable fixture.

[0057] like Figures 13 to 15 As shown, the super welding equipment 2 is provided with a tray loading and unloading mechanism 211 corresponding to the upper cover loading mechanism, and the tray can specifically refer to a blister tray, which is used to install the upper cover; the tray loading and unloading mechanism includes a full tray loading bin 212 and an empty tray unloading bin 213, and the full tray loading bin 212 and the empty tray unloading bin 213 both use a bin safety door 214, and the bin safety door is arranged at the front side of the full tray loading bin 212 and the empty tray unloading bin 213, and the sliding door method is used, which can facilitate the material taking and unloading, and ensure that the multi-layer blow molding disc does not tilt. The full tray loading bin 212 has a loading support bottom plate 215 and a tray loading drive device for controlling the axial lifting and lowering of the loading support bottom plate 215Z, and the empty tray unloading bin 213 has a unloading support bottom plate 216 and a tray unloading drive device for controlling the axial lifting and lowering of the unloading support bottom plate 216Z.

[0058] The top ends of the full pallet upper bin 212 and the empty pallet lower bin 213 are connected to each other through a horizontal groove, and a dividing plate 217 and a dividing drive device 218 for controlling the dividing plate 217 to move inward or outward are respectively provided on both sides of the horizontal groove. The dividing plate 217 has an upper plate, a lower plate and a guide groove 219 located between the upper plate and the lower plate. The adjacent pallets stacked up and down are easily separated by separation protrusions. For example, the pallet has a top wall and a peripheral side wall extending downward from the periphery of the top wall, and the product placement position is formed on the top wall. Separation protrusions are provided on the peripheral side walls of the pallet protruding inwardly. In this way, the separation protrusion of the upper pallet is limited by the top wall of the lower pallet. At the same time, the lower end of the peripheral side wall extends outward with a flange, and the flanges of adjacent pallets maintain a gap. When the full pallet is in the upper bin 212, the loading support bottom plate 215 raises the full pallet to the set height (also equivalent to the position of the dividing plate), and the dividing drive device 218 controls the dividing plate 217 to move inward, and its upper plate and lower plate are respectively located on the upper and lower sides of the flange, and the flange is located in the guide groove. When the products on the full pallet are all moved to the upper cover conveying track by the upper cover loading robot arm, the full pallet becomes an empty pallet; the top empty pallet of the full pallet upper bin 213 is translated along the guide groove 219 to the empty pallet lower bin 213 area through the set pallet horizontal movement block 221, and then the dividing drive device 218 controls the dividing plate 217 to move outward and away, and break away from the support of the empty pallet, and the empty pallet automatically falls to the unloading support bottom plate 216 of the empty pallet lower bin 213. Usually, the initial position of the unloading support bottom plate 216 of the empty pallet lower bin 213 is at the top, and as the empty pallets are continuously unloaded and stacked, the unloading support bottom plate 216 gradually descends. The pallet horizontal movement shift block 221 is driven by the pallet horizontal movement driving device 222. Through the arrangement of the full pallet upper bin 212 and the empty pallet lower bin 213, continuous loading and unloading can be achieved without stopping the machine. The top pallet is supported separately and the guide grooves arranged on the material dividing plate are cleverly used to improve the smoothness of the movement of the empty pallet during translation, and improve the automatic operation stability of the pallet loading and unloading mechanism. At the same time, the structure is simple.

[0059] Preferably, in order to further improve the translational stability of the empty pallet, pre-positioning grooves are provided on both sides of the top of the pallet, and a pallet pre-positioning block 220 is provided above the dividing plate 217. The pallet pre-positioning block 220 can share the dividing drive device 218 with the dividing plate 217. When the dividing plate 217 separately supports the top pallet, the pallet pre-positioning block 220 is also correspondingly limited to the pre-positioning groove on the top of the pallet, thereby increasing the stability of the pallet.

[0060] In this embodiment, the product height inspection mechanism adopts a 4+1 measurement method, namely: 4 measuring points and 1 reference point, and takes 4 detection corner points and 1 reference point as relative ratios to detect the assembly height / assembly position of the upper cover.

[0061] like Fig.16 As shown, at the same time, combined Figure 8 As shown; the magnetic return transfer loading mechanism is arranged at the output end of the super welding device 2, and the magnetic return transfer loading mechanism has a magnetic return transfer position 2001 and a magnetic return cleaning positioning mechanism 2002. The magnetic return is moved from the magnetic return transfer position 2001 to the magnetic return cleaning positioning mechanism 2002 by setting a first magnetic return transfer loading mechanism 2003, and the magnetic return is cleaned and positioned. A second magnetic return transfer loading mechanism 2004 is also arranged to transfer the cleaned and positioned magnetic return to the magnetic return assembly station 2005 on the upper jig conveying mechanism. When the product is moved to the magnetic return assembly station 2005 along with the upper jig conveying mechanism, the jig positioning mechanism positions the conveying jig and the product, and the magnetic return is assembled on the product. Preferably, the first magnetic return transfer loading mechanism 2003 and the second magnetic return transfer loading mechanism 2004 are designed as double-headed magnetic return transfer loading mechanisms, that is, the two share a driving synchronous displacement action.

[0062] The upper jig conveying mechanism corresponding to the magnetic return assembly coating device 3 is provided with a magnetic return pressing station 2006, a magnetic return dispensing station 2007, and a coating inspection station 2008; the magnetic return pressing mechanism is arranged corresponding to the magnetic return pressing station; after the magnetic return is assembled on the product, it is transported to the magnetic return pressing station along the upper jig conveying mechanism, and the magnetic return pressing mechanism presses the magnetic return to ensure that it is assembled in place. The magnetic return dispensing mechanism includes a dispensing controller 2009, a three-axis dispensing mechanism 2010, and a needle cleaning mechanism is configured for the dispensing needle of the three-axis dispensing mechanism 2010; the coating inspection mechanism adopts a CCD, which is arranged corresponding to the coating inspection station. A 200W black and white CCD can be selected. Defective products are discharged, and qualified products after coating CCD inspection are arranged by the robot 2011 (usually three-axis drive) and placed in a (for example, metal) tray, and then the horizontal four-axis robot 2012 (XYZ drive and horizontal rotation) transfers the whole plate to the furnace position 2013 on the tray, and then automatically transfers the whole plate to the drying box A and places it layer by layer. After drying, the horizontal four-axis robot transfers the whole plate to the input end of the engraving and magnetizing device 4.

[0063] like Figures 17 to 20As shown, an automatic transport mechanism is illustrated for transferring a whole plate into a drying box and placing it layer by layer; the transport mechanism comprises a transport lifting base 71, a transport lifting driving device for controlling the transport lifting base 71 to lift and lower along the Z direction, and a transport arm 72 arranged on the transport lifting base. The transport arm 72 is driven and connected to the transport lifting base 71 through a telescopic mechanism. The telescopic mechanism comprises a first-layer moving part 73 and a second-layer moving part 74 which can be displaced horizontally in the same direction respectively. The first-layer moving part 73 is mounted on the transport lifting base 71 and can be horizontally displaced relative to the transport lifting base 71 (for example, translation along the X-axis direction). The second-layer moving part 74 is mounted on the first-layer moving part 73 and can be horizontally displaced relative to the first-layer moving part 73 (for example, translation along the X-axis direction). The transport arm 72 is mounted on the second-layer moving part 74. Therefore, for the transport arm 74, its moving distance and speed are increased to twice the value, which saves space when not in use for transport. In actual design, the moving part can be arranged in more than two layers. That is to say, if the transport arm is arranged to slide along the X-axis of the second moving part, it is equivalent to a three-layer moving part. Then, the moving distance and speed can be increased to three times in the same time.

[0064] The first-layer moving part 73 and the second-layer moving part 74 are driven by the same motor 76; a fixed transverse plate 75 is connected to the transport and lifting base 71, and an avoidance groove 751 extending in the X-axis direction is provided on the fixed transverse plate 75; the motor 76 is installed on the lower side of the first-layer moving part 73 and is located on the lower side of the fixed transverse plate 75, and the first-layer moving part 73 is located above the fixed transverse plate 75, and the motor 76 and the first-layer moving part 73 are connected as a whole through the connecting part through the avoidance groove. The motor 76 drives and is connected to a coaxial double transmission wheel 77 in the Y-axis direction. One transmission wheel of the coaxial double transmission wheel 77 is connected to two Y-axis transmission wheels 79 arranged at intervals along the X-axis direction on the first-layer motion part 73 through an annular synchronous belt 78. The second-layer motion part 74 is connected to the annular synchronous belt 78 through a clamping mechanism, and correspondingly reciprocates and translates in the X-axis region between the two Y-axis transmission wheels 79. A synchronous belt segment 752 extending in the X-axis direction is fixed to the fixed transverse plate 75. Both ends of the synchronous belt segment 752 are fixed to the fixed transverse plate 75, and the other transmission wheel of the coaxial double transmission wheel 77 is meshed with the synchronous belt segment 752. In this way, when the motor 76 is working, the coaxial double transmission wheel 77 rotates accordingly, and the motor 76 and the first-layer motion part 73 are displaced along the X-axis direction of the synchronous belt segment 752 by the other transmission wheel of the coaxial double transmission wheel 77. At the same time, the second-layer motion part 74 is displaced along the X-axis direction of the annular synchronous belt 78.

[0065] Preferably, the coaxial double transmission wheels 77 are of the same size, so when the motor 76 rotates at a certain speed, the transport arm translates at twice the speed. Of course, if the coaxial double transmission wheels 77 are of different sizes, the translation speeds of the first layer moving part 73 and the second layer moving part 74 are different, and the translation speed of the transport arm 72 is the sum of the translation speeds of the first layer moving part 73 and the second layer moving part 74.

[0066] like Fig.21 As shown, the engraving magnetizing device 4 is also provided with an engraving turntable 401, and a plurality of third turntable jigs are arranged at intervals on the engraving turntable 401; an engraving loading station 402, an engraving station 403, an engraving inspection station 404, and an engraving unloading station 405 are arranged at intervals around the engraving turntable 401; the engraving loading station 402 is provided with an engraving turntable loading and transferring three-axis mechanism 406, an engraving turntable loading and positioning and flipping mechanism 407, the engraving mechanism is arranged corresponding to the engraving station 403, the engraving inspection station 404 is provided with an engraving inspection mechanism, and the engraving unloading station 405 is provided with an engraving turntable unloading and transferring three-axis mechanism 408 to move the product from the engraving unloading station 405 to the upper jig conveying mechanism;

[0067] The upper jig conveying mechanism corresponding to the imprinting magnetization equipment 4 is provided with a magnetization station 409, a magnetization inspection station 410, and a product positioning and flipping station 411 in sequence. The magnetization mechanism and the magnetization inspection mechanism are respectively provided corresponding to the magnetization station 409 and the magnetization inspection station 410. The magnetization mechanism is provided with a power supply 413, and the product positioning and flipping station 411 is provided with a product positioning and flipping mechanism. The product on the conveying jig is moved to the pallet by the product loading pallet moving three-axis mechanism 412. The empty pallet is sent to the output end of the imprinting magnetization equipment 4 by the empty pallet conveying mechanism. After the pallet is filled with sufficient products, the entire pallet is sent to the reflow furnace 5. The residence time and temperature in the reflow furnace 5 can be set as needed, for example, up to 250 degrees Celsius and a duration of 5 minutes. The unloaded conveying jig is sent to the lower jig reflow mechanism by the jig descending mechanism on the output side of the imprinting magnetization equipment 4 for jig reflow.

[0068] Typically, the output end of the imprinting and magnetizing device 4 is connected to a reflow furnace 5 for aging. The output end of the imprinting and magnetizing device 4 is provided with a first product unloading mechanism and an empty pallet conveying mechanism. The product is fed into the reflow furnace 5 from the feeding position with the pallet. When the product reaches the discharging position of the reflow furnace 5, the second product unloading mechanism unloads the product from the pallet, and the empty pallet flows back to the empty pallet conveying mechanism.

[0069] Next, a speaker assembly method is introduced, including the following assembly steps:

[0070] Step 1: Prepare the semi-finished product, cover and magnetic return;

[0071] Step 2: Conduct internal inspection on semi-finished products, first perform CCD automatic inspection on some items, and then manually inspect other items after checking qualified products;

[0072] Step 3: After the qualified products have been inspected by CCD automatic inspection and manual inspection, they are automatically sent to the super welding equipment 2. At the same time, the upper cover is automatically sent to the super welding equipment 2, the upper cover is positioned, assembled and ultrasonically welded to the semi-finished product, and the product height is inspected;

[0073] Step 4: The magnetic return is automatically fed in and assembled and positioned with qualified products after product height inspection, and then pressed and positioned by the magnetic return pressing mechanism, and then the magnetic return glue dispensing and coating inspection are carried out; the qualified products after coating inspection enter the drying oven;

[0074] Step 5: The dried product is automatically sent to the marking and magnetizing device 4, and is automatically marked, magnetized, and inspected in sequence.

[0075] In the steps 2 to 5, an upper jig conveying mechanism and a lower jig reflux mechanism are provided, and a jig ascending mechanism and a jig descending mechanism are respectively connected to the corresponding ends of the upper jig conveying mechanism and the lower jig reflux mechanism, so as to form a reflux application of the conveying jig;

[0076] It also includes step six: qualified products inspected by the engraving and magnetizing equipment 4 are automatically taken off the conveying jig and placed in the tray, the empty conveying jig is sent to the lower jig reflow mechanism through the jig descending mechanism, and a number of products placed in the tray are automatically sent to the reflow furnace 5, and the products are automatically unloaded from the tray to the next link at the output end of the reflow furnace 5, and the empty tray is automatically reflowed to the output side of the engraving and magnetizing equipment 4 or the input side of the reflow furnace 5.

[0077] It should be noted that the aforementioned description of the structure and function of the speaker assembly production line, the assembly method, etc. can all be combined and applied to the assembly steps of the speaker assembly method as needed.

Claims

1. A speaker assembly production line, characterized in that: It includes internal inspection equipment, super welding equipment, magnetic assembly and coating equipment and engraving and magnetization equipment arranged in the process sequence; among which: The internal inspection equipment is provided with a semi-finished product feeding mechanism, a CCD inspection mechanism, and a manual inspection station; The super welding device is provided with a semi-finished product transfer mechanism connected to the output end of the internal inspection device, an upper cover feeding mechanism, an upper cover positioning and assembling mechanism, an ultrasonic welding mechanism, and a product height inspection mechanism; The magnetic return assembly coating equipment is provided with a magnetic return pressing mechanism, a magnetic return dispensing mechanism, and a coating inspection mechanism. The magnetic return pressing mechanism has an input side connected to a magnetic return load transfer mechanism, and the magnetic return pressing mechanism has an input side connected to the output end of the super welding device; the magnetic return assembly coating equipment is equipped with a drying furnace; Furthermore, the imprinting and magnetizing equipment is provided with an imprinting mechanism, a magnetizing mechanism, and a magnetizing inspection mechanism.

2. The speaker assembly production line according to claim 1, characterized in that: An upper jig conveying mechanism and a lower jig reflow mechanism are arranged along the internal inspection equipment, super welding equipment, magnetic reassembly coating equipment and imprinting magnetization equipment. A jig ascending mechanism is arranged on the input side of the internal inspection equipment, and a jig descending mechanism is arranged on the output side of the imprinting magnetization equipment. The jig ascending mechanism and the jig descending mechanism are respectively connected to the corresponding ends of the upper jig conveying mechanism and the lower jig reflow mechanism.

3. The speaker assembly production line according to claim 1, characterized in that: The output end of the engraving and magnetizing equipment is connected to the reflow furnace, and the output end of the engraving and magnetizing equipment is provided with a first product unloading mechanism and an empty pallet conveying mechanism. The product enters the reflow furnace from the input position of the reflow furnace along with the pallet. When it reaches the output position of the reflow furnace, the second product unloading mechanism unloads the product from the pallet, and the empty pallet flows back to the empty pallet conveying mechanism.

4. The speaker assembly production line according to claim 2, characterized in that: The CCD inspection mechanism is provided with a CCD inspection station located on the upper jig conveying mechanism, which performs CCD inspection on the front side of the product, then turns the product over through the turning mechanism, then performs CCD inspection on the back side of the product, then turns the product over to the front side and conveys it to the manual inspection station on the conveying jig along the upper jig conveying mechanism; or, The CCD inspection mechanism of the internal inspection equipment includes a CCD inspection turntable, a plurality of first turntable fixtures arranged at circumferential intervals on the CCD inspection turntable, each first turntable fixture is provided with a double product position; a CCD inspection loading station, a CCD inspection station, a first product front and back flipping and shifting station, and a second product front and back flipping and shifting station are arranged at intervals around the CCD inspection turntable; the CCD inspection loading station is connected to the semi-finished product feeding mechanism, the CCD inspection station is equipped with a CCD, the first product front and back flipping and shifting station is equipped with a first flipping and shifting robot to flip the front and back of the product and move the product from one product position on the first turntable fixture to another product position, and the second product front and back flipping and shifting station is equipped with a second flipping and shifting robot to flip the front and back of the product and move it from the first turntable fixture to the conveying fixture of the upper fixture conveying mechanism.

5. The speaker assembly production line according to claim 1, characterized in that: The super welding equipment also includes a super welding turntable, and a plurality of second turntable jigs arranged at circumferential intervals on the super welding turntable; a super welding loading station, an upper cover positioning and assembly station, an ultrasonic welding station, a product suction and dust removal station, a product height inspection station, and a turntable jig cleaning station are arranged at intervals around the super welding turntable; the semi-finished product transfer mechanism is connected between the output end of the internal inspection equipment and the super welding loading station, the upper cover positioning and assembly mechanism is arranged corresponding to the upper cover positioning and assembly station, the ultrasonic welding mechanism is arranged corresponding to the ultrasonic welding station, the product suction and dust removal station is equipped with a suction and dust removal mechanism, the product height inspection mechanism is arranged corresponding to the product height inspection station, and the turntable jig cleaning station is equipped with a turntable jig cleaning mechanism; In addition, a product flipping and transferring mechanism is provided to move qualified products from the product height inspection station back to the conveying jig of the upper jig conveying mechanism.

6. The speaker assembly production line according to claim 5, characterized in that: The magnetic return transfer and loading mechanism is arranged at the output end of the super welding device. The magnetic return transfer and loading mechanism has a magnetic return transfer position and a magnetic return cleaning and positioning mechanism. The magnetic return is moved from the magnetic return transfer position to the magnetic return cleaning and positioning mechanism by setting a first magnetic return transfer mechanism to clean and position the magnetic return. A second magnetic return transfer mechanism is also arranged to transfer the cleaned and positioned magnetic return to the magnetic return assembly station on the upper jig conveying mechanism. When the product is moved to the magnetic return assembly station along with the upper jig conveying mechanism, the jig positioning mechanism positions the conveying jig and the product, and the magnetic return is assembled on the product.

7. The speaker assembly production line according to claim 1, characterized in that: The upper jig conveying mechanism corresponding to the magnetic return assembly coating equipment is provided with a magnetic return pressing station, a magnetic return dispensing station and a coating inspection station; the magnetic return pressing mechanism is arranged corresponding to the magnetic return pressing station; the magnetic return dispensing mechanism includes a dispensing controller, a three-axis dispensing mechanism, and a needle cleaning mechanism is configured for the dispensing needle of the three-axis dispensing mechanism; the coating inspection mechanism adopts CCD, which is arranged corresponding to the coating inspection station.

8. The speaker assembly production line according to claim 1, characterized in that: The engraving magnetizing equipment is also provided with an engraving turntable, and a plurality of third turntable jigs are arranged at intervals on the engraving turntable; an engraving loading station, an engraving station, an engraving inspection station, and an engraving unloading station are arranged at intervals around the engraving turntable; the engraving loading station is equipped with an engraving turntable loading and transferring three-axis mechanism, an engraving turntable loading positioning and flipping mechanism, the engraving mechanism is arranged corresponding to the engraving station, the engraving inspection station is equipped with an engraving inspection mechanism, and the engraving unloading station is equipped with an engraving turntable unloading and transferring three-axis mechanism to transfer the product from the engraving unloading station to the upper jig conveying mechanism; In addition, the corresponding upper jig conveying mechanism on the engraving magnetization equipment is sequentially provided with a magnetization station, a magnetization inspection station, and a product positioning and flipping station. The magnetization mechanism and the magnetization inspection mechanism are respectively provided corresponding to the magnetization station and the magnetization inspection station, and the product positioning and flipping station is equipped with a product positioning and flipping mechanism.

9. A speaker assembly method, characterized in that: The assembly steps include: Step 1: Prepare the semi-finished product, cover and magnetic return; Step 2: Conduct internal inspection on semi-finished products, first perform CCD automatic inspection on some items, and then manually inspect other items for qualified products; Step 3: After the CCD automatic inspection and manual inspection, the qualified products are automatically sent to the super welding equipment. At the same time, the upper cover is automatically sent to the super welding equipment, the upper cover is positioned, assembled and ultrasonically welded to the semi-finished product, and the product height is inspected; Step 4: The magnetic return is automatically fed in and assembled and positioned with qualified products after product height inspection, and then pressed and positioned by the magnetic return pressing mechanism, and then the magnetic return glue dispensing and coating inspection are carried out; the qualified products after coating inspection enter the drying oven; Step 5: The dried product is automatically sent to the engraving and magnetizing equipment, and the engraving, magnetizing and magnetizing inspection are automatically carried out in sequence.

10. A speaker assembly method according to claim 9, characterized in that: In the steps 2 to 5, an upper jig conveying mechanism and a lower jig reflux mechanism are provided, and a jig ascending mechanism and a jig descending mechanism are respectively connected to the corresponding ends of the upper jig conveying mechanism and the lower jig reflux mechanism, so as to form a reflux application of the conveying jig; It also includes step six: qualified products inspected by the engraving and magnetizing equipment are automatically taken off the conveying fixture and placed in the tray, the empty conveying fixture is sent to the lower fixture reflow mechanism through the fixture descending mechanism, and a number of products placed in the tray are automatically sent to the reflow furnace, and the products are automatically unloaded from the tray to the next link at the output end of the reflow furnace, and the empty tray is automatically reflowed to the output side of the engraving and magnetizing equipment or the input side of the reflow furnace.

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