Glue coating equipment

Abstract

The present invention discloses a glue coating device, comprising: a frame, on which a glue coating material support for carrying a workpiece is arranged; a material grabbing mechanism, which is used to place the workpiece on the glue coating material support; a glue coating mechanism, which is used to apply glue to the glue coating part of the workpiece on the glue coating material support, the glue coating mechanism includes a glue coating component that can move relative to the frame; and a flipping mechanism, which is used to flip the workpiece on the glue coating material support to a position convenient for transfer, the flipping mechanism includes a flipping member that can flip relative to the frame; the glue coating device has a first working state and a second working state, when the glue coating device is in the first working state, the glue coating component is located above the glue coating material support; when the glue coating device is in the second working state, the flipping member is located above the glue coating material support. The present invention makes it more convenient to assemble workpieces such as a tweeter cup or a dust cover of a speaker, and improves assembly efficiency.

Description

Technical Field

[0001] The invention relates to loudspeaker manufacturing equipment, in particular to a glue coating equipment. Background Art

[0002] A loudspeaker, also known as a "horn", is a sound-generating device that can convert electrical signals into sound signals. The tweeter cup or dust cover of a loudspeaker often needs to be glued and assembled on other parts. At present, in the speaker assembly line, the material grabbing and gluing process of the speaker tweeter cup or dust cover is mainly achieved manually, which has low assembly efficiency and requires a high level of operator proficiency. Summary of the invention

[0003] In view of the above problems, the present invention provides a glue coating device, which makes the assembly of workpieces such as a tweeter cup, a dust cover, and a dust cap of a speaker more convenient and improves the assembly efficiency.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A glue coating device, comprising:

[0006] A frame, on which a glue-coated material support for carrying workpieces is provided;

[0007] A material grabbing mechanism, which is used to place the workpiece on the glue coating support;

[0008] A gluing mechanism, which is used to apply glue to the gluing portion of the workpiece on the gluing support, the gluing mechanism comprising a gluing component that can move relative to the frame; and

[0009] A turning mechanism, which is used to turn the workpiece on the glue-coating support to a position convenient for transfer, and the turning mechanism includes a turning member capable of turning relative to the frame;

[0010] The gluing device has a first working state and a second working state. When the gluing device is in the first working state, the gluing component is located above the gluing material holder; when the gluing device is in the second working state, the flipping member is located above the gluing material holder.

[0011] Preferably, the glue coating material holder and / or the flip member are provided with a negative pressure hole capable of providing negative pressure for adsorbing the workpiece.

[0012] Preferably, the glue-applying component is a glue valve, the glue valve has a length direction obliquely intersecting with the frame, and the glue-applying mechanism further includes a cylinder for driving the glue valve to move along its length direction.

[0013] More preferably, the glue coating mechanism also includes a horizontal slide, a vertical slide that can be slidably arranged on the horizontal slide in a horizontal direction, and a slider that can be slidably arranged on the vertical slide in an up and down direction. The glue valve can be slidably arranged on the slider along its length direction, the cylinder is installed on the slider, and the piston rod of the cylinder is connected to the glue valve.

[0014] More preferably, the glue coating mechanism also includes a first screw rod movably provided in the horizontal slide and a first handwheel for driving the first screw rod to rotate, and the vertical slide and the first screw rod are matched by threads; and / or, the glue coating mechanism also includes a second screw rod movably provided in the vertical slide and a second handwheel for driving the second screw rod to rotate, and the slider and the second screw rod are matched by threads.

[0015] Preferably, the flipping mechanism further comprises a motor and a crank arranged on an output shaft of the motor, the output shaft of the motor extends in a horizontal direction, and the flipping member is arranged on the crank.

[0016] Preferably, the material grabbing mechanism comprises at least one barrel for storing a plurality of workpieces stacked one above the other and a material grabbing assembly movably used to take the upper layer of workpieces in the barrel.

[0017] More preferably, the frame is also provided with a thickness detection material support and a correction material support, each having a negative pressure hole capable of providing negative pressure. The thickness detection material support, the correction material support and the glue coating material support are arranged in sequence, and the grabbing assembly includes a first suction cup for moving the workpiece from the barrel to the thickness detection material support, a second suction cup for moving the workpiece on the thickness detection material support to the correction material support and a third suction cup for moving the workpiece on the correction material support to the glue coating material support.

[0018] More preferably, the material grabbing mechanism further comprises a turntable rotatably arranged on the frame, an upper cover mounting seat arranged on the frame, and an upper cover arranged on the upper cover mounting seat, the number of the barrels is multiple and they are arranged on the turntable at intervals along the circumferential direction of the turntable, the upper cover is located above one of the barrels, and the upper cover is formed with a hole for the workpiece to pass through, and the inner diameter of the hole is smaller than the inner diameter of the barrel. By storing the stacked workpieces through multiple barrels, the storage quantity is large. The inner diameter of the barrel is larger than the outer diameter of the workpiece to be loaded, so as to facilitate material addition; the inner diameter of the hole of the upper cover is smaller than the inner diameter of the barrel and slightly larger than or equal to the outer diameter of the workpiece, so as to facilitate material distribution.

[0019] Furthermore, the gripping mechanism also includes a lifting mechanism, which includes a lifting rod slidably arranged on the frame in the up-down direction, a through hole is provided at the bottom of each barrel, and a corresponding through hole is provided on the turntable, and the through holes on the turntable correspond to the through holes on the barrel and are aligned with each other so that the lifting rod can pass through or pass through the barrel. The barrel is driven to pass through the lifting mechanism by the rotation of the turntable, and the workpieces in the barrel can be conveniently lifted by the lifting mechanism, so that each workpiece can reach the material taking height that the material taking mechanism can reach one by one, so as to facilitate loading. And the empty barrel can be moved out of the lifting mechanism, so as to facilitate loading.

[0020] More preferably, the grabbing mechanism also includes a cylinder for adjusting the size of the gap, the number of the upper covers is at least two, the gap is formed between at least two of the upper covers, the upper cover is movably disposed on the upper cover mounting seat, and the upper cover is connected to the piston rod of the cylinder.

[0021] The present invention adopts the above solution, which has the following advantages compared with the prior art:

[0022] The gluing device of the present invention can integrate material grabbing, gluing and flipping, and is suitable for assembling components such as tweeters, dust covers and dust caps of loudspeakers, thereby improving assembly efficiency and assembly yield of loudspeakers and reducing labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0024] Figure 1 It is a three-dimensional schematic diagram of a glue coating device according to an embodiment of the present invention in a first working state;

[0025] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0026] Figure 3 for Figure 1 A partial enlarged view of point B in the middle;

[0027] Figure 4 for Figure 1 A top view of the glue coating device shown;

[0028] Figure 5 for Figure 1 A front view of the glue coating device shown;

[0029] Figure 6 for Figure 1 A side view of the glue coating device shown;

[0030] Figure 7 for Figure 1 The three-dimensional schematic diagram of the glue coating device shown in the second working state;

[0031] Figure 8 for Figure 1 The schematic diagram of the gluing equipment shown is during the material discharge process;

[0032] Fig. 9 is a schematic diagram of a treble cup;

[0033] Fig.10 Schematic diagram of the dust cover.

[0034] In the above figures,

[0035] 1. Frame; 11. Thickness detection support; 12. Rejection port; 13. Correction support; 14. Glue coating support; 15. Negative pressure hole; 16a. First detection switch; 16b. Second detection switch; 16c. Third detection switch; 16d. Fourth detection switch;

[0036] 2. Material grabbing mechanism; 20. Rotating plate; 21. Material barrel; 210. Through slot; 22. Upper cover mounting seat; 23. Cylinder; 24. Upper cover; 25. Material grabbing assembly; 251. First suction cup; 252. Second suction cup; 253. Third suction cup; 254. Pressing plate; 255. Material taking mounting plate; 256. Vertical guide rail; 257. Horizontal guide rail; 258. Cylinder; 259. Cylinder;

[0037] 3. Gluing mechanism; 30. Glue valve; 31. Cylinder; 32. Slider; 33. Vertical slide; 34. Horizontal slide; 35. First screw rod; 36. First hand wheel; 37. Second screw rod; 38. Second hand wheel;

[0038] 4. Turning mechanism; 40. Turning member; 41. Crank; 42. Motor;

[0039] 5. Treble cup; 50. Glue coating part;

[0040] 6. Dust cover; 60. Glue coating area. DETAILED DESCRIPTION

[0041] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0042] The upper and lower parts mentioned in the present invention are defined according to the habits of general consumers. When consumers face the front of the feeding device, Figure 5 In the main view shown, the upper side of the paper is “up” and the lower side of the paper is “down”.

[0043] This embodiment provides a Figures 1 to 8 The gluing device shown is specifically a gluing device for speaker accessories that integrates material grabbing, material separation, gluing, and flipping. In this embodiment, the workpiece to be processed by the gluing device is specifically as follows Fig. 9 The treble cup 5 shown is an accessory of a woofer speaker, and has a glue coating portion 50 to be coated with glue; in other embodiments, the workpiece can also be a dust cover 6 of a speaker, and its glue coating portion 60 is as shown in FIG. Fig.10 As shown; the workpiece can also be a dust cap. It should be noted that the workpieces such as the tweeter cup 5, the dust cover 6, and the dust cap are hollow and relatively thin parts. In order to save space, they are often stacked together and stored after molding. However, this storage method creates some obstacles to the subsequent gluing and assembly. The gluing equipment of this embodiment is a device developed for such parts and used for speaker assembly.

[0044] Reference Figures 1 to 8 As shown, the gluing device mainly includes a frame 1 and a material grabbing mechanism 2, a gluing mechanism 3, and a flipping mechanism 4 which are sequentially arranged on the frame 1. The frame 1 has a horizontal workbench, on which a thickness detection material holder 11, a correction material holder 13, and a gluing material holder 14 for carrying the treble cup are arranged, and the above three material holders are linearly arranged from left to right. The material grabbing mechanism 2 is used to place the treble cup on the thickness detection material holder 11, the correction material holder 13, and the gluing material holder 14. The gluing mechanism 3 is used to apply glue to the gluing part of the treble cup on the gluing material holder 14, and the gluing mechanism 3 includes a gluing component that can move relative to the frame 1. The flipping mechanism 4 is used to flip the workpiece on the gluing material holder 14 to a position that is convenient for assembly, and the flipping mechanism 4 includes a flipping member 40 that can flip relative to the frame 1. Furthermore, the gluing equipment is used in conjunction with the upper loading robot on the assembly line. When the gluing is completed, the flipping piece 40 flips the tweeter cup 180 degrees so that the gluing portion is flipped downward, which facilitates the engagement of the loading robot and the upper part of the tweeter cup, and the tweeter cup is placed on the semi-finished speaker to be assembled with the gluing portion facing downward.

[0045] Combination Figure 1 , 4 As shown in FIGS. 5, 7 and 8, a rejection port 12 is provided between the thickness detection support 11 and the correction support 13. When there are more than one treble cups on the thickness detection support 11, the material grabbing mechanism 2 can put the upper treble cups into the rejection port 12 to ensure that the treble cups placed on the correction support 13 and the glue coating support 14 are always single. Figure 3 As shown, the upper surface of the glue-coated support 14 has a convex surface that matches and can be engaged with the treble cup, and a plurality of negative pressure holes 15 that can be connected to a negative pressure source are provided on the convex surface, so as to provide negative pressure to absorb the treble cup, so as to temporarily fix the treble cup on the glue-coated support 14; similarly, the thickness detection support 11 and the correction support 13 also have convex surfaces and negative pressure holes. The negative pressure holes are connected to the negative pressure source through a pipeline, and the negative pressure source can be a vacuum pump

[0046] The material grabbing mechanism 2 includes at least one barrel 21 for storing multiple workpieces stacked up and down and a material grabbing assembly 25 that is movably used to take the upper workpiece in the barrel 21. Specifically, there are multiple barrels 21, and multiple barrels 21 are fixedly arranged on a turntable 20 and distributed on the turntable 20 at intervals along the circumferential direction of the turntable 20. The turntable 20 is rotatably arranged on the frame 1. In this embodiment, the number of barrels 21 is specifically eight, and the eight barrels 21 are evenly spaced at the edge of the turntable 20, and the center angle between two adjacent barrels 21 is 45 degrees. The material storage mechanism 1 also includes a driving mechanism for driving the turntable 20 to rotate. In this embodiment, the driving mechanism specifically includes a rotating motor, which drives a rotating shaft to rotate, and the axis of the rotating shaft extends in the up and down direction. The rotating shaft can be rotatably arranged around its own axis through the frame 1, and the turntable 20 is fixedly arranged at the upper end of the rotating shaft. When the workpieces in the barrel 21 at the working position (the working position specifically refers to the material picking position that the grabbing assembly 25 can reach, and the grabbing assembly 25 can move to just above this position to pick up materials) are used up, the motor drives the turntable 20 to rotate 45 degrees to move the next barrel 21 containing the workpieces to position a.

[0047] The gripping mechanism 2 also includes a lifting mechanism (not shown in the figure) for lifting the workpiece in the barrel 21. In this embodiment, the number of the lifting mechanism is only one, and it is arranged at the above-mentioned working position. The lifting mechanism specifically includes a lifting rod movably arranged on the frame 1 in the up-down direction, and the lifting rod extends in the up-down direction. The lower end of each barrel is open or a through hole is opened at the bottom, and a through hole is correspondingly opened on the turntable 20. The through hole on the turntable 20 and the lower end or through hole of the barrel 21 correspond to each other and are aligned with each other for the lifting rod to penetrate or pass through the barrel 21. The lifting rod can be driven up and down by a stepper motor. The lifting rod can penetrate into the barrel 21 above it (i.e., the barrel at the working position) to lift the high-pitched cup; the lifting rod can also be separated from the barrel 21 and located below the turntable 20 to allow the turntable 20 to rotate, so as to move the empty barrel 21 at the current working position out for feeding, and move the next barrel with the high-pitched cup into the working position for feeding.

[0048] Each barrel 21 is in the shape of a hollow cylinder. The upper end of the barrel 21 is open, the lower end of the barrel 21 is open or has a through hole for the lifting rod to be inserted, and the bottom of the barrel 21 is fixed on the turntable 20 (such as fixed by screws). The material grabbing mechanism 2 also includes an upper cover mounting seat 22 fixedly arranged on the frame 1 and an upper cover 24 arranged on the upper cover mounting seat 22. The upper cover 24 is located above one of the barrels 21 (specifically, the barrel 21 in the working position), and the upper cover 24 is formed with a hole for the workpiece to pass through, and the inner diameter of the hole is smaller than the inner diameter of the barrel 21. Preferably, the number of the upper covers 24 is at least two, and these upper covers 24 are assembled to form the above-mentioned hole between them, and all or part of the upper covers 24 are movably arranged on the upper cover mounting seat 22 so that the size of the hole can be adjusted to accommodate materials of different specifications. Furthermore, the gripping mechanism 2 also includes a cylinder 23 for adjusting the size of the hole. The cylinder 23 is arranged on the upper cover mounting seat 22, and its piston rod is connected to the upper cover 24 to drive the upper cover 24 to move. Specifically in this embodiment, there are two upper covers 24, and the cylinder 23 is a bidirectional cylinder, which can drive the two upper covers 24 to move closer to or away from each other. Among them, the inner diameter of the barrel 21 is larger than the outer diameter of the treble cup to be loaded, so as to facilitate feeding; the inner diameter of the hole formed by the upper cover 24 is smaller than the inner diameter of the barrel 21 and slightly larger than or equal to the outer diameter of the treble cup, so as to facilitate material distribution. A through groove extending in the up and down direction is opened on the side wall of each barrel 21, so as to facilitate the workpiece to be lowered when loading.

[0049] The above-mentioned material grabbing assembly 25 specifically includes a first suction cup 251 for moving the workpiece from the barrel 21 to the thickness detection support 11, a second suction cup 252 for moving the workpiece on the thickness detection support 11 to the correction support 13, and a third suction cup 253 for moving the workpiece on the correction support 13 to the glue coating support 14. The material grabbing assembly 25 may further include a pressure plate 254 for pressing and shaping the workpiece of the barrel 21, so as to adapt to some workpieces with a large contact area, and the workpiece is pressed and shaped before the first suction cup 251 sucks. The thickness detection support 11, the correction support 13 and the glue coating support 14 are arranged on the workbench from left to right in sequence, and the pressure plate 254, the first suction cup 251, the second suction cup 252 and the third suction cup 253 are also arranged in sequence from left to right. Ideally, the first suction cup 251 takes one treble cup from the barrel 21 each time. However, since the treble cups are light and thin and are nested together, the actual situation is that two or more nested workpieces are often taken at one time when taking materials. Therefore, multiple suction cups are provided to separate the two nested treble cups so that the coating machine can turn over the treble cups one by one to avoid missing coating. The first suction cup 251, the second suction cup 252 and the third suction cup 253 are respectively provided with negative pressure holes that can be connected to the negative pressure source.

[0050] The pressure plate 254, the first suction cup 251, the second suction cup 252 and the third suction cup 253 are all mounted on a material picking installation plate 255, and the material picking installation plate 255 can move horizontally along the x-axis and move up and down along the z-axis. Specifically, the material picking installation plate 255 can be movably arranged on a vertical guide rail 256 along the z-axis, and the vertical guide rail 256 can be movably arranged on a transverse guide rail 257 along the x-axis. The cylinder 258 can drive the material picking installation plate 255 to move up and down relative to the workbench along the vertical guide rail 256, and the cylinder 259 can drive the vertical guide rail 256 and the material picking installation plate 255 thereon to move horizontally relative to the workbench along the transverse guide rail 257. The above-mentioned x-axis, y-axis, and z-axis are three axes constituting a spatial rectangular coordinate system.

[0051] The glue coating component is a glue valve 30, and the glue valve 30 has a length direction that obliquely intersects with the frame 1 (specifically, the working surface of the frame 1). Preferably, the angle between the length direction of the glue valve 30 and the working surface is 45 degrees. The glue coating mechanism 3 also includes a horizontal slide 34, a vertical slide 33 that can be slidably arranged on the horizontal slide 34 in the horizontal direction, a slider 32 that can be slidably arranged on the vertical slide 33 in the up-down direction, and a cylinder 31 for driving the glue valve 30 to move along its length direction. The glue valve 30 can be slidably arranged on the slider 32 along its length direction, the cylinder 31 is installed on the slider 32, and the piston rod of the cylinder 31 is connected to the glue valve 30, which can make the glue valve 30 retract and retract, drive the glue injection port of the glue valve 30 to the glue coating position of the high-pitched cup on the glue coating material holder 14, and retract after the glue coating is completed, leaving space for the operation of the flip mechanism 4.

[0052] The glue coating mechanism 3 also includes a first screw rod 35 movably inserted into the horizontal slide 34 and a first hand wheel 36 for driving the first screw rod 35 to rotate. The first screw rod 35 extends along the y-axis. The vertical slide 33 and the first screw rod 35 are matched by threads. For example, the vertical slide 33 is provided with a nut sleeved on the first screw rod 35 or an internal thread matched with the thread on the first screw rod 35. When the first hand wheel 36 is turned, the first screw rod 35 rotates around its own axis. Under the action of the thread, the vertical slide 33 moves along the y-axis (horizontally), thereby adjusting the horizontal position of the glue valve 30.

[0053] The glue coating mechanism 3 also includes a second screw rod 37 movably inserted into the vertical slide 33 and a second hand wheel 38 for driving the second screw rod 37 to rotate. The second screw rod 37 extends along the z-axis. The slider 32 and the second screw rod 37 are matched by threads. For example, the slider 32 is provided with a nut sleeved on the second screw rod 37 or an internal thread matched with the thread on the second screw rod 37. When the second hand wheel 38 is turned, the second screw rod 37 rotates around its own axis. Under the action of the thread, the slider 32 moves along the z-axis (up and down), thereby adjusting the height of the glue valve 30.

[0054] In this embodiment, the flipping member 40 is specifically a flipping suction cup, which is provided with a negative pressure hole capable of providing negative pressure for adsorbing the workpiece. The flipping mechanism 4 also includes a motor 42 and a crank 41 disposed on the output shaft of the motor 42, the output shaft of the motor 42 extending in the horizontal direction, and the flipping member 40 is disposed on one end of the crank 41. As the motor 42 runs, the crank 41 swings left and right around the horizontally extending rotation axis (i.e., the axis of the output shaft of the motor 42), and the flipping member 40 swings left and right accordingly, thereby being able to flip the treble cup on the glue-coated material holder 14 by about 180 degrees for subsequent assembly.

[0055] The glue coating device has a first working state and a second working state. Figure 1 As shown, when the glue coating device is in the first working state, the glue coating component is located above the glue coating material holder 14 to glue the treble cup. Figure 7 As shown, when the glue coating device is in the second working state, the flipping member 40 is located above the glue coating material holder 14 to flip the tweeter cup after glue coating so that the glue coating part faces downwards, so as to facilitate the subsequent bonding and assembly.

[0056] The glue coating device also includes a control mechanism, which includes a controller and a first detection switch 16a for detecting whether there is material in the barrel. Figure 4 As shown. The first detection switch 16a is directly opposite to the barrel 21 at position a, so as to detect whether there is a workpiece in the barrel 21; if there is no workpiece in the barrel 21 at present, the first detection switch 16a is triggered and sends a first detection signal, and the controller is electrically connected to the first detection switch 16a and the above-mentioned rotating motor 42 respectively. After receiving the first detection signal, the controller sends a running signal to the rotating motor 42. In response to the running signal, the rotating motor 42 starts and drives the turntable 20 to rotate 45 degrees, and the empty barrel 21 is moved out of position a for re-adding, and the full barrel 21 is moved to position a for the material grabbing component 25 to pick up the material. The first detection switch 16a is specifically a photoelectric detection switch.

[0057] The control mechanism also includes a second detection switch 16b, which is correspondingly arranged near the thickness detection material holder 1131, so as to detect the thickness of the workpiece sucked by the first suction cup 251, so as to judge the number of workpieces taken according to the thickness. The control mechanism also includes two third detection switches 16c and a fourth detection switch 16d, which are respectively arranged on the correction material holder 13 and the glue coating material holder 14, so as to detect whether there are workpieces on the correction material holder 13 and the glue coating material holder 14. The second detection switch, the third detection switch 16c and the fourth detection switch 16d are photoelectric detection switches, respectively, and are electrically connected to the controller, respectively, and the controller is also electrically connected to the control valve of the cylinder. The controller is also used to control the presence or absence of negative pressure on each suction cup, specifically to control the on-off of the negative pressure hole and the negative pressure source of the suction cup, and also to control the on-off of the negative pressure hole and the negative pressure source on each material holder.

[0058] The working process of the glue coating equipment of this embodiment is described as follows.

[0059] The material grabbing mounting plate moves to the left, so that the first suction cup 251, the second suction cup 252, and the third suction cup 253 respectively reach the working position above the barrel 21, the thickness detection material holder 11, and the correction material holder 13. Figure 1 or Figure 7 As shown. Figure 1 In the first working state shown, the glue valve 30 extends to the top of the high-pitched cup on the glue-coating material holder 14, and its glue injection port is aligned with the glue-coating part of the high-pitched cup to perform the glue coating operation. After the glue coating is completed, the glue valve 30 retracts, and the turning motor 42 operates to turn the crank 41, turning the turning member 40 to the top of the high-pitched cup, that is, Figure 7 The flipping member 40 absorbs the glue-coated tweeter cup and flips it upward and rightward so that the glue-coated part of the tweeter cup faces downward, and then is taken away by the matching loading robot and placed on the speaker assembly line.

[0060] After the gluing and flipping process is completed, the material grabbing assembly 25 synchronously performs the following three material taking actions: the first suction cup 251 sucks the treble cup on the uppermost layer of the barrel 21, the second suction cup 252 sucks the treble cup on the thickness detection material holder 11, and the third suction cup 253 sucks the treble cup on the correction material holder 13. Or, if the first detection switch detects that the number of treble cups on the thickness detection material holder 11 is more than one, only the second suction cup 252 sucks the treble cup on the upper layer of the thickness detection material holder 11 (i.e., the extra treble cups taken) through negative pressure, while the lower layer of the material holder is still placed on the thickness detection material holder 11, and the first suction cup 251 and the third suction cup 253 do not suck the treble cup.

[0061] The material grabbing mounting plate moves up, then moves to the right, and then moves down to reach the position shown in the figure. Figure 8In the discharge state shown, the negative pressure of the three suction cups is disconnected, while the negative pressure on the three material holders is connected, so that the sucked high-pitched cups fall on the three material holders respectively. At the same time, the pressure plate 254 is inserted into the barrel 21 at the working position to press down the workpiece to be taken. Or, corresponding to the situation in the previous cycle where the first detection switch detects that the number of high-pitched cups on the thickness detection material holder 11 is more than one, the material grabbing installation plate moves up and then moves a short distance to the right, so that the second suction cup 252 reaches the top of the rejection port 12, and then the negative pressure is disconnected, and the excess high-pitched cups are put into the rejection port 12, and then the main material installation moves left to reset, and then repeats the same process. Figure 1 or Figure 7 The material taking action.

[0062] In summary, the workpiece in the barrel 21 is first pressed down by the pressure plate 254 to form, and then sucked onto the thickness detection material tray 11 by the first suction cup 251. If more than one tweeter cup is sucked, the tweeter cup on the thickness detection material tray 11 located on the upper layer is redundant, and is dropped into the rejection port 12 by the second suction cup 252. This operation can be carried out simultaneously with the gluing process and the flipping process; the normally sucked single tweeter cup or the tweeter cup on the thickness detection material tray 11 located on the lower layer is sucked onto the correction material tray 13 by the second suction cup 252; and then it is sucked onto the glue coating material tray 14 by the third suction cup 253, glued by the gluing mechanism 3, flipped by the flipping mechanism 4, and then moved to the assembly line of the speaker.

[0063] The gluing equipment can realize the grabbing, gluing and flipping of the tweeter cups of the loudspeaker one by one, avoiding the situation where multiple tweeter cups are overlapped, improving the efficiency and the assembly yield of the loudspeaker, and reducing labor costs.

[0064] The above embodiment is only for illustrating the technical concept and features of the present invention, and is a preferred embodiment. Its purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention.

Claims

1. A glue coating device, characterized in that: include: A frame, on which a glue-coated material support for carrying workpieces is provided; A material grabbing mechanism, which is used to place the workpiece on the glue coating support; A gluing mechanism, which is used to apply glue to the gluing part of the workpiece on the gluing support, and the gluing mechanism includes a gluing component that can move relative to the frame; and A turning mechanism, which is used to turn the workpiece on the glue-coating support to a position convenient for transfer, and the turning mechanism includes a turning member capable of turning relative to the frame; The gluing device has a first working state and a second working state. When the gluing device is in the first working state, the gluing component is located above the gluing material holder; when the gluing device is in the second working state, the flipping member is located above the gluing material holder; The glue coating material holder and / or the flip member are provided with a negative pressure hole capable of providing negative pressure for adsorbing the workpiece; The material grabbing mechanism comprises at least one barrel for storing a plurality of workpieces stacked up and down and a material grabbing assembly movably used to take the upper layer of the workpiece in the barrel; The frame is also provided with a thickness detection material support and a correction material support, each of which has a negative pressure hole capable of providing negative pressure. The thickness detection material support, the correction material support and the glue coating material support are arranged in sequence, and the gripping assembly includes a first suction cup for moving the workpiece from the barrel to the thickness detection material support, a second suction cup for moving the workpiece on the thickness detection material support to the correction material support, and a third suction cup for moving the workpiece on the correction material support to the glue coating material support; The material grabbing mechanism also includes a turntable rotatably arranged on the frame, an upper cover mounting seat arranged on the frame, and an upper cover arranged on the upper cover mounting seat. The number of the barrels is multiple and they are arranged on the turntable at intervals along the circumferential direction of the turntable. The upper cover is located above one of the barrels, and the upper cover is formed with a gap for the workpiece to pass through, and the inner diameter of the gap is smaller than the inner diameter of the barrel.

2. The gluing device according to claim 1, characterized in that: The glue coating component is a glue valve, and the glue valve has a length direction obliquely intersecting with the frame. The glue coating mechanism also includes a cylinder for driving the glue valve to move along its length direction.

3. The gluing device according to claim 2, characterized in that: The glue coating mechanism also includes a horizontal slide, a vertical slide that can be slidably arranged on the horizontal slide in a horizontal direction, and a slider that can be slidably arranged on the vertical slide in an up and down direction. The glue valve can be slidably arranged on the slider along its length direction. The cylinder is installed on the slider, and the piston rod of the cylinder is connected to the glue valve.

4. The gluing device according to claim 3, characterized in that: The glue coating mechanism also includes a first screw rod movably provided in the horizontal slide and a first hand wheel for driving the first screw rod to rotate, and the vertical slide and the first screw rod are matched by threads; and / or the glue coating mechanism also includes a second screw rod movably provided in the vertical slide and a second hand wheel for driving the second screw rod to rotate, and the slider and the second screw rod are matched by threads.

5. The gluing device according to claim 1, characterized in that: The flipping mechanism further comprises a motor and a crank arranged on an output shaft of the motor, the output shaft of the motor extends in a horizontal direction, and the flipping member is arranged on the crank.

6. The gluing device according to claim 1, characterized in that: The material grabbing mechanism also includes a cylinder for adjusting the size of the pore. The number of the upper covers is at least two. The pore is formed between at least two of the upper covers. The upper cover is movably disposed on the upper cover mounting seat. The upper cover is connected to the piston rod of the cylinder.

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