Fragrance production line

Abstract

The utility model relates to the technical field of fragrance assembly production, and discloses a fragrance production line which comprises a rack, a workpiece jig, a conveying line, a screw locking device and a first positioning device, the workpiece jig is provided with a positioning groove used for containing and positioning the lower shell. The conveying line is arranged on the rack and used for conveying workpiece jigs. The number of the screw locking devices is at least three, the screw locking devices are arranged on the rack and located above the conveying line, and the three screw locking devices are used for being in threaded connection with the lower shell and the circuit board, the lower shell and the mechanical part and the lower shell and the upper shell correspondingly; the first positioning device is arranged on the rack and used for driving the workpiece jigs to leave the conveying line so that the workpiece jigs can be limited below the corresponding screw locking devices. The fragrance production line provided by the utility model can solve the problem of how to improve the production efficiency of the fragrance.

Description

Technical Field

[0001] The utility model relates to the technical field of fragrance assembly production, in particular to a fragrance production line. Background Art

[0002] With the accelerating pace of modern life and people's constant pursuit of a higher quality of life, fragrance products, as consumer goods that create a comfortable environment and enhance the atmosphere of life, are becoming increasingly popular and favored by consumers. As the primary carrier of fragrance products, fragrance machines are also experiencing increasing market demand. Fragrance machines primarily consist of four key components: a lower housing, an upper housing, a circuit board, and mechanical components (such as a motor and fan) to ensure their proper operation and performance.

[0003] However, in the current production process of fragrance machines, most manufacturers still use a semi-automated production method, which has many shortcomings. Specifically, the production process is roughly as follows: First, the worker needs to manually place the circuit board in the predetermined position of the lower shell and manually carry this assembly to the first screwing machine for screwing. After this step is completed, the worker needs to manually intervene again, placing the mechanical components in the corresponding position of the lower shell and manually carrying it to the second screwing machine for screwing. Finally, the worker needs to manually place the upper shell on the assembled lower shell and manually carry it to the third screwing machine for screwing to achieve a fastened connection between the upper and lower shells and complete the assembly of the entire machine. During this process, the worker needs to manually carry and load and unload the screwing machine multiple times. The frequent manual operation is not only labor-intensive but also greatly reduces production efficiency.

[0004] In view of the many shortcomings of the existing fragrance production methods, it is necessary to develop a fragrance production line that aims to realize automatic loading and unloading of the screw tightening machine through mechanization and automation, thereby reducing dependence on manual operation. Utility Model Content

[0005] (1) Technical problems solved

[0006] The utility model provides a fragrance production line, which can at least solve the technical problem of how to improve the fragrance production efficiency.

[0007] (2) Technical solution

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: a fragrance production line, comprising:

[0009] frame;

[0010] A workpiece jig is provided with a positioning groove for accommodating and positioning the lower shell;

[0011] The conveyor line is installed on the machine frame and is used to convey the workpiece fixture;

[0012] At least three screw locking devices are provided on the frame and located above the conveyor line, wherein the three screw locking devices are respectively used to screw together the lower housing and the circuit board, the lower housing and the mechanical component, and the lower housing and the upper housing;

[0013] The first positioning device is arranged on the machine frame and is used to drive the workpiece fixture to leave the conveyor line so as to limit the workpiece fixture to the bottom of the corresponding screw locking device.

[0014] It is further provided that the aforementioned conveyor line includes an upper conveyor line, a lower conveyor line, a lifting conveyor line and a lifting drive device. The upper conveyor line and the lower conveyor line are arranged in parallel on the frame. The lifting drive device is arranged on the frame and is transmission-connected to the lifting conveyor line. The lifting drive device is used to drive the lifting conveyor line to move up and down so that the lifting conveyor line can be docked with the upper conveyor line or the lower conveyor line.

[0015] It is further provided that the aforementioned upper conveying line and lower conveying line each include a plurality of sub-conveying lines, and the plurality of sub-conveying lines are connected in sequence.

[0016] It is further provided that the aforementioned first positioning device includes a lifting mechanism, which is fixed on the frame and located below the conveyor line, and is used to lift the workpiece fixture away from the conveyor line.

[0017] It is further provided that the aforementioned first positioning device also includes a material blocking mechanism, which is fixed on the output end of the jacking mechanism and is used to block the workpiece fixture from moving forward along the conveying direction.

[0018] It is further provided that the aforementioned screw locking device includes a screwdriver and a screwdriver driving mechanism, the screwdriver driving mechanism is arranged on the frame and is transmission-connected to the screwdriver, and the screwdriver driving mechanism is used to drive the screwdriver to move to each screw hole.

[0019] Furthermore, the aforementioned fragrance production line also includes a second positioning device, the number of the second positioning devices is the same as the screw locking devices, and they correspond one to one, wherein the three second positioning devices are respectively used to position the lower shell and the circuit board, the lower shell and the mechanical parts, and the lower shell and the upper shell.

[0020] Further, the aforementioned second positioning device includes:

[0021] The limiting seat is provided with a limiting groove, which is used to accommodate and limit the lower shell and circuit board, the lower shell and mechanical parts, or the lower shell and upper shell;

[0022] The limit seat driving mechanism is arranged on the frame and is connected to the limit seat transmission. The limit seat driving mechanism is used to drive the limit seat to move up and down to loosen or press down the circuit board, mechanical parts or upper shell.

[0023] Furthermore, the aforementioned fragrance production line also includes a detection device, which includes a number of assembly detection parts and air-tightness detection parts. The assembly detection parts and the air-tightness detection parts are both arranged on the frame. The assembly detection parts correspond to the screw locking devices one by one, and are respectively used to detect the assembly status of the lower shell and the circuit board, the lower shell and the mechanical parts, and the lower shell and the upper shell. The air-tightness detection parts are used to detect the air-tightness of the internal passage of the fragrance.

[0024] Furthermore, the aforementioned fragrance production line also includes a material unloading robot, a good product conveyor belt and a defective product conveyor belt, and the material unloading robot is used to transfer good products and defective products to the good product conveyor belt and the defective product conveyor belt respectively.

[0025] (3) Beneficial effects

[0026] Compared with the existing technology, the fragrance production line provided by the present invention has the following beneficial effects:

[0027] When the fragrance production line provided by the present invention is used, first, the lower shell is placed into the positioning groove of the workpiece jig, and the circuit board is placed in the predetermined position of the lower shell. The workpiece jig is then placed on the conveyor line, which transports each workpiece jig one by one. When the workpiece jig is transported under the first screw locking device, the first positioning device drives the workpiece jig away from the conveyor line to confine the workpiece jig below the first screw locking device. Then, the first screw locking device is activated, and after screwing the lower shell and the circuit board together, the mechanical component is placed in the predetermined position of the lower shell. The first positioning device drives the workpiece jig back to the conveyor line, and the conveyor line transports the workpiece jig to the next screw locking device. After repeating the above steps to screw the lower shell and the mechanical component together, the upper shell is placed on the lower shell, and the conveyor line transports the workpiece jig to the next screw locking device. The above steps are repeated to screw the lower shell and the upper shell together, completing the assembly of the entire machine. It can be seen that the fragrance production line, through the cooperation of the conveyor line and the first positioning device, can replace manual handling, realize automatic loading and unloading of the screw locking device, and effectively improve the efficiency of fragrance production. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A three-dimensional diagram of the fragrance production line in the embodiment;

[0029] Figure 2 This is a schematic diagram of the partial structure of the conveying line in the embodiment;

[0030] Figure 3This is a partial structural diagram of the first screw locking device and the conveying line in the embodiment;

[0031] Figure 4 A schematic diagram of the partial structure of the second screw locking device and the conveying line in the embodiment;

[0032] Figure 5 This is a partial structural diagram of the third screw locking device and the conveying line in the embodiment;

[0033] Figure 6 It is a schematic diagram of the partial structure of the unloading robot, good product conveyor belt, defective product conveyor belt and conveyor line in the embodiment.

[0034] Figure Number:

[0035] 101, rack;

[0036] 102. Workpiece fixture; 1021. Positioning groove;

[0037] 103, conveyor line; 1031, upper conveyor line; 1032, lower conveyor line; 1033, lifting conveyor line; 1034, lifting drive device; 1035, sub-conveyor line;

[0038] 104. Screw locking device; 1041. Screwdriver; 1042. Screwdriver drive mechanism;

[0039] 105. First positioning device; 1051. Lifting mechanism; 1052. Material blocking mechanism;

[0040] 106. Second positioning device; 1061. Limiting seat; 10611. Limiting groove; 10612. Guide hole; 1062. Limiting seat driving mechanism; 1063. Elastic pressure rod;

[0041] 107. Detection device; 1071. Assembly detection component; 1072. Airtightness detection component;

[0042] 108. Unloading robot; 1081. Chuck; 1082. Chuck moving mechanism;

[0043] 109. Conveyor belt for good products; 110. Conveyor belt for defective products;

[0044] 200. Aroma diffuser; 201. Lower housing; 202. Circuit board; 203. Mechanical components; 204. Upper housing. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0046] The utility model provides a fragrance production line, which is used to solve the problem of how to improve the fragrance production efficiency.

[0047] See Figure 1 As shown, Figure 1 1 is a three-dimensional diagram of a fragrance production line in an embodiment, which includes a frame 101 , a workpiece fixture 102 , a conveyor line 103 , a screw locking device 104 and a first positioning device 105 .

[0048] The workpiece fixture 102 has a positioning groove 1021 for accommodating and positioning the lower housing 201 .

[0049] The conveyor line 103 is installed on the frame 101 , and is used to convey the workpiece fixture 102 .

[0050] There are at least three screw locking devices 104 installed on the frame 101 and located above the conveyor line 103. These three screw locking devices 104 are used to respectively screw together the lower housing 201 and the circuit board 202, the lower housing 201 and the mechanical component 203, and the lower housing 201 and the upper housing 204. For ease of explanation, these three screw locking devices 104 are designated as the first screw locking device, the second screw locking device, and the third screw locking device.

[0051] Combine Figure 3 As shown, Figure 3 This is a partial structural diagram of the first screw locking device and the conveyor line in the embodiment. The first positioning device 105 is installed on the frame 101 by welding or screwing. The first positioning device 105 is used to drive the workpiece fixture 102 away from the conveyor line 103 to confine the workpiece fixture 102 to the bottom of the corresponding screw locking device 104, ensuring the accuracy and stability of the screw locking operation.

[0052] When using the fragrance production line of the above technical solution, the lower housing 201 is first placed into the positioning slot 1021 of the workpiece jig 102, and the circuit board 202 is positioned at the predetermined position on the lower housing 201. The workpiece jig 102 is then placed on the conveyor line 103. The conveyor line 103 transports each workpiece jig 102 one by one. When a workpiece jig 102 is conveyed under the first screw-locking device 104, the first positioning device 105 drives the workpiece jig 102 away from the conveyor line 103, thereby confining it below the first screw-locking device 104. The first screw-locking device 104 then activates, screwing the lower housing 201 and the circuit board 202 together. After this, the mechanical component 203 is placed in the predetermined position on the lower housing 201, and the first positioning device 105 drives the workpiece jig 102 back to the conveyor line 103. The conveyor line 103 transports the workpiece fixture 102 to the second screw-locking device 104. After repeating the above steps to screw-lock the lower housing 201 and the mechanical component 203, the upper housing 204 is placed on the lower housing 201. The conveyor line 103 then transports the workpiece fixture 102 to the third screw-locking device 104. The above steps to screw-lock the lower housing 201 and the upper housing 204 are repeated, completing the assembly of the entire machine. This demonstrates that the fragrance production line, through the coordination of the conveyor line 103 and the first positioning device 105, can replace manual handling, enabling automated loading and unloading of the screw-locking devices 104, effectively improving fragrance production efficiency.

[0053] See Figure 1 and Figure 2 As shown, Figure 2 103 is a partial structural diagram of the conveyor line in the embodiment. In one embodiment of the conveyor line 103, the conveyor line 103 includes an upper conveyor line 1031, a lower conveyor line 1032, a lifting conveyor line 1033 and a lifting drive device 1034. The upper conveyor line 1031 and the lower conveyor line 1032 are arranged in parallel on the upper and lower sides, and the upper conveyor line 1031 and the lower conveyor line 1032 are both installed on the frame 101. The lifting drive device 1034 is installed on the frame 101, and the lifting drive device 1034 is connected to the lifting conveyor line 1033 in a transmission manner. The lifting drive device 1034 is used to drive the lifting conveyor line 1033 to move up and down so that the lifting conveyor line 1033 can be docked with the upper conveyor line 1031 or the lower conveyor line 1032. In this way, the conveyor line 103 can greatly improve the conveying space and efficiency through double-layer conveying of the upper conveyor line 1031 and the lower conveyor line 1032, and the lifting drive device 1034 and the lifting conveyor line 1033 cooperate to transfer the workpiece fixture 102 on the lower conveyor line 1032 to the upper conveyor line 1031, and vice versa, which is very convenient.

[0054] The lifting drive device 1034 can use an existing linear displacement drive device such as a telescopic cylinder or a linear motor module, which is screwed or welded to the frame 101, and its output end is screwed or welded to the lifting conveyor line 1033.

[0055] See Figure 1 and Figure 3 As shown, in one embodiment of the upper conveyor line 1031 and the lower conveyor line 1032, the upper conveyor line 1031 and the lower conveyor line 1032 each include a plurality of sub-conveyor lines 1035, which are sequentially connected to extend the conveying distance. In this way, the upper conveyor line 1031 and the lower conveyor line 1032 can both be formed by sequentially connecting a plurality of sub-conveyor lines 1035. Compared to the entire long-span conveyor line 103, the sub-conveyor lines 1035 have a shorter conveying span, but better structural strength, which can effectively improve the overall structural strength of the conveyor line 103.

[0056] The above-mentioned sub-conveyor lines 1035 and the lifting conveyor line 1033 can both adopt the existing motor-belt combination conveying method. In this embodiment, the upper conveyor line 1031 and the lower conveyor line 1032 are each formed by three sub-conveyor lines 1035 connected in sequence. The number of screw locking devices 104 is three, and the sub-conveyor lines 1035 and the screw locking devices 104 correspond one to one.

[0057] See Figure 3 As shown, in one embodiment of the first positioning device 105, the first positioning device 105 includes a lifting mechanism 1051. The lifting mechanism 1051 is fixed to the frame 101 by screwing or welding. The lifting mechanism 1051 is located below the conveyor line 103 and is used to lift the workpiece fixture 102 away from the conveyor line 103. In this way, when the conveyor line 103 conveys the workpiece fixture 102 to the bottom of a screw locking device 104, the lifting mechanism 1051 lifts the workpiece fixture 102 away from the conveyor line 103, thereby confining the workpiece fixture 102 there so that the screw locking device 104 can perform the screw locking operation on the workpiece. After the screws are locked, the lifting mechanism 1051 returns the workpiece fixture 102 to the conveyor line 103, and the conveyor line 103 can continue to convey the workpiece fixture 102 to the next screw locking device 104. During the entire production process, the conveyor line 103 does not need to be shut down, which will not affect the transportation and assembly of other workpieces, further improving the efficiency of fragrance production.

[0058] The lifting mechanism 1051 can utilize an existing linear displacement drive device such as a telescopic cylinder or telescopic pole. The sub-conveyor line 1035 can utilize a motor-driven, synchronously conveying two symmetrical belts. In this manner, the output end of the lifting mechanism 1051 can pass between the two belts of the sub-conveyor line 1035, thereby lifting the workpiece fixture 102 from the two belts.

[0059] The lifting mechanisms 1051 can be provided in the same number as the screw locking devices 104 and correspond to each other. The lifting mechanisms 1051 can also be provided in greater number than the screw locking devices 104 and can be used for positioning workpieces in other processes besides screw locking.

[0060] See Figure 3 As shown, based on the above embodiment, the first positioning device 105 also includes a material blocking mechanism 1052, which is fixed to the output end of the lifting mechanism 1051 by screwing or welding, and is used to block the workpiece fixture 102 from moving forward along the conveying direction. In this way, the material blocking mechanism 1052 can prevent the workpiece fixture 102 from leaving the conveyor line 103 and entering the next process before the processing of the current process is completed. In summary, the fragrance production line can effectively ensure that the workpiece fixture 102 is confined to the corresponding process until the processing of the corresponding process is completed through the coordination of the material blocking mechanism 1052 and the lifting mechanism 1051.

[0061] The material blocking mechanism 1052 can use an existing telescopic device such as a telescopic cylinder or a telescopic pole, and is located at the front end of the workpiece fixture 102. In this way, the material blocking mechanism 1052 can be extended to block the workpiece fixture 102 from moving forward and move it out of the processing range of the process. The material blocking mechanism 1052 can be shortened to facilitate the workpiece fixture 102 to continue to move forward along the conveyor line 103.

[0062] See Figure 3 、 Figure 4 and Figure 5 As shown, Figure 4 This is a partial structural diagram of the second screw locking device and the conveying line in the embodiment. Figure 5 This is a partial structural diagram of the third screw locking device and the conveyor line in the embodiment. In one embodiment of the screw locking device 104, the screw locking device 104 includes a screwdriver 1041 and a screwdriver driving mechanism 1042. The screwdriver driving mechanism 1042 is arranged on the frame 101 by screwing or welding. The screwdriver driving mechanism 1042 is transmission-connected to the screwdriver 1041. The screwdriver driving mechanism 1042 is used to drive the screwdriver 1041 to move to each screw hole. In this embodiment, the screwdriver driving mechanism 1042 can use an existing three-axis displacement mechanism. In this way, the fragrance production line can drive the screwdriver 1041 to move to any screw hole on the same plane of the workpiece through the screwdriver driving mechanism 1042, so that any screw hole on the same plane of the workpiece can be screwed, which is very convenient and further improves production efficiency.

[0063] See Figure 3 、 Figure 4 and Figure 5As shown, based on the above embodiment, the fragrance production line further includes second positioning devices 106. The number of second positioning devices 106 is the same as that of screw locking devices 104, and they correspond one to one. The three second positioning devices 106 are used to position the lower housing 201 and circuit board 202, the lower housing 201 and mechanical component 203, and the lower housing 201 and upper housing 204, respectively. In this way, the second positioning devices 106 can fix the relative installation position of the two components to be screwed together, preventing the relative position of the two components to be screwed together from shifting during the screwing process, thereby improving installation quality.

[0064] See Figure 3 、 Figure 4 and Figure 5 As shown, in one embodiment of the second positioning device 106, the second positioning device 106 includes a limiting seat 1061 and a limiting seat driving mechanism 1062. The limiting seat 1061 has a limiting groove 10611, which is used to accommodate and limit the lower housing 201 and circuit board 202, the lower housing 201 and mechanical component 203, or the lower housing 201 and upper housing 204. The limiting seat driving mechanism 1062 is mounted on the frame 101 and is in transmission connection with the limiting seat 1061. The limiting seat driving mechanism 1062 is used to drive the limiting seat 1061 to move up and down to release or press down the workpiece.

[0065] The depth and shape of the limiting groove 10611 can be adjusted accordingly based on the components to be limited, and the limiting seats 1061 for different processes can be configured differently. The limiting seat drive mechanism 1062 can use an existing linear displacement drive device such as a telescopic cylinder, telescopic pole, or linear motor module, and is mounted on the frame 101 by screwing or welding, with its output end connected to the limiting seat 1061 by screwing or welding.

[0066] See Figure 3 、 Figure 4 and Figure 5 As shown, in one embodiment of the stopper 1061, the stopper 1061 is provided with vertically extending guide holes 10612. The number of guide holes 10612 is the same as the number of screw holes on the workpiece, and they are coaxially distributed in a one-to-one correspondence. The diameter of the guide holes 10612 is larger than that of the screw holes, and the output end of the screwdriver 1041 is passed through the guide holes 10612. This guide hole 10612 guides the position of the screwdriver 1041, ensuring a high-quality screw connection.

[0067] See Figure 3 、 Figure 4 and Figure 5As shown, in one embodiment of the limit seat 1061, an elastic pressure rod 1063 is also connected to the limit seat 1061, and the elastic pressure rod 1063 is located in the limit groove 10611, and is used to abut against the workpiece and press the two parts to be screwed together through elastic action. In this way, the elastic pressure rod 1063 can not only limit the two parts to be screwed, but also avoid overpressure on the parts to prevent damage to the parts.

[0068] The above-mentioned elastic pressure rod 1063 can be composed of a rod and a spring. The rod is slidably connected to the limit seat 1061. The two ends of the spring are respectively connected to the limit seat 1061 and the rod to drive the rod to slide downward, thereby abutting against the workpiece and pressing the two parts to be screwed together through elasticity.

[0069] See Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, Figure 6 The diagram below is a partial structural diagram of the unloading robot, good product conveyor belt, defective product conveyor belt, and conveyor line in the embodiment. Based on any of the above embodiments, the fragrance production line also includes a detection device 107. The detection device 107 includes several assembly detection components 1071 and airtightness detection components 1072. The assembly detection components 1071 and airtightness detection components 1072 are both mounted on the frame 101. The assembly detection components 1071 correspond one-to-one with the screw locking devices 104 and are used to detect the assembly of the lower housing 201 and circuit board 202, the lower housing 201 and mechanical components 203, and the lower housing 201 and upper housing 204, respectively. The airtightness detection component 1072 is used to detect the airtightness of the internal passage of the fragrance. In this way, the fragrance production line can ensure the factory quality of the fragrance through the detection device 107 and reduce the defective product rate.

[0070] The assembly inspection member 1071 may use a CCD visual inspection device to visually inspect whether two components are assembled together to avoid missing or improper assembly. The airtightness inspection member 1072 may use an airtightness leak detector.

[0071] See Figure 6As shown, based on any of the above embodiments, the fragrance production line further includes a material unloading robot 108, a good product conveyor belt 109, and a defective product conveyor belt 110. The material unloading robot 108 is used to transfer qualified fragrance machines 200 and unqualified fragrance machines 200 to the good product conveyor belt 109 and the defective product conveyor belt 110, respectively. In this way, the material unloading robot 108 can transfer qualified fragrance machines 200 to the good product conveyor belt 109 and unqualified fragrance machines 200 to the defective product conveyor belt 110 based on the inspection results of the inspection mechanism. At the same time, the good product conveyor belt 109 and the defective product conveyor belt 110 are activated, and the qualified fragrance machines 200 and unqualified fragrance machines 200 on them can be collected together for easy access by staff.

[0072] In this embodiment, the detection range of the above-mentioned air tightness detection part 1072 is located outside the conveyor line 103, and the unloading robot 108 can also be used to transfer the fragrance machine 200 that has passed the assembly detection part 1071 to the detection range of the air tightness detection part 1072. After passing the air tightness detection part 1072, the unloading robot 108 will transfer the fragrance machine 200 that has passed the air tightness detection to the good product conveyor belt 109, and transfer the fragrance machine 200 that has failed the air tightness detection to the defective product conveyor belt 110.

[0073] See Figure 6 As shown, in one embodiment of the unloading robot 108, the unloading robot 108 includes a chuck 1081 and a chuck moving mechanism 1082. The chuck moving mechanism 1082 is mounted on the frame 101 by screwing or welding. The chuck moving mechanism 1082 is in driving connection with the chuck 1081, which is used to clamp or release the fragrance dispenser 200. In this embodiment, the chuck moving mechanism 1082 can use an existing three-axis displacement mechanism, with its output end screwed to the chuck 1081. The chuck 1081 can use an existing gripper cylinder. In this way, after the entire assembly of the fragrance machine 200 is completed, the clamp moving mechanism 1082 can drive the clamp 1081 to move to the conveyor line 103 to clamp the fragrance machine 200, and according to the test results, the qualified fragrance machines 200 are evenly arranged on the good product conveyor belt 109, and the unqualified fragrance machines 200 are evenly arranged on the defective product conveyor belt 110, thereby realizing automatic unloading and stacking of the fragrance machines 200 without relying on manual labor, further improving production efficiency.

[0074] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fragrance production line, characterized in that: include: frame; A workpiece jig, wherein the workpiece jig is provided with a positioning groove for accommodating and positioning the lower shell; A conveyor line, provided on the frame and used for conveying the workpiece jig; At least three screw locking devices are provided on the frame and located above the conveyor line, wherein the three screw locking devices are respectively used to screw together the lower housing and the circuit board, the lower housing and the mechanical component, and the lower housing and the upper housing; The first positioning device is provided on the machine frame and is used to drive the workpiece fixture to leave the conveyor line so as to limit the workpiece fixture to the lower side of the corresponding screw locking device.

2. The fragrance production line according to claim 1, characterized in that: The conveyor line includes an upper conveyor line, a lower conveyor line, a lifting conveyor line and a lifting drive device. The upper conveyor line and the lower conveyor line are arranged in parallel on the frame. The lifting drive device is arranged on the frame and is transmission-connected to the lifting conveyor line. The lifting drive device is used to drive the lifting conveyor line to move up and down so that the lifting conveyor line can be docked with the upper conveyor line or the lower conveyor line.

3. The fragrance production line according to claim 2, characterized in that: The upper conveying line and the lower conveying line each include a plurality of sub-conveyor lines, and the plurality of sub-conveyor lines are connected in sequence.

4. The fragrance production line according to any one of claims 1 to 3, characterized in that: The first positioning device includes a lifting mechanism, which is fixed on the frame and located below the conveyor line, and is used to lift the workpiece fixture away from the conveyor line.

5. The fragrance production line according to claim 4, characterized in that: The first positioning device further includes a material blocking mechanism, which is fixed on the output end of the lifting mechanism and is used to block the workpiece fixture from moving forward along the conveying direction.

6. The fragrance production line according to any one of claims 1, 2, 3 and 5, characterized in that: The screw locking device includes a screwdriver and a screwdriver driving mechanism. The screwdriver driving mechanism is arranged on the frame and is transmission-connected to the screwdriver. The screwdriver driving mechanism is used to drive the screwdriver to move to each screw hole.

7. The fragrance production line according to claim 6, characterized in that: The fragrance production line also includes a second positioning device, the number of which is the same as that of the screw locking devices and corresponds one to one, wherein three of the second positioning devices are respectively used to position the lower shell and the circuit board, the lower shell and the mechanical parts, and the lower shell and the upper shell.

8. The fragrance production line according to claim 7, characterized in that: The second positioning device includes: A limiting seat, wherein the limiting seat is provided with a limiting groove, and the limiting groove is used to accommodate and limit the lower shell and circuit board, the lower shell and mechanical components, or the lower shell and upper shell; The limit seat driving mechanism is arranged on the frame and is connected to the limit seat in a transmission manner. The limit seat driving mechanism is used to drive the limit seat to move up and down to loosen or press down the circuit board, the mechanical component or the upper shell.

9. The fragrance production line according to any one of claims 1, 2, 3, 5, 7 and 8, characterized in that: The fragrance production line also includes a detection device, which includes a plurality of assembly detection parts and air tightness detection parts. The assembly detection parts and air tightness detection parts are both arranged on the frame. The assembly detection parts correspond to the screw locking devices one by one, and are respectively used to detect the assembly status of the lower shell and circuit board, the lower shell and mechanical parts, and the lower shell and upper shell. The air tightness detection parts are used to detect the air tightness of the internal passage of the fragrance.

10. The fragrance production line according to any one of claims 1, 2, 3, 5, 7 and 8, characterized in that: The fragrance production line further includes a material unloading robot, a good product conveyor belt and a defective product conveyor belt. The material unloading robot is used to transfer good products and defective products to the good product conveyor belt and the defective product conveyor belt respectively.

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