Solder paste continuous filling equipment

Abstract

The utility model relates to the field of solder paste filling equipment, and discloses solder paste continuous filling equipment which comprises a rack, a solder paste barrel, a filling head, a conveying belt, a controller and a time relay. The solder paste barrel is arranged on the rack; the filling head is arranged on the rack in a lifting manner, is connected with the solder paste barrel through a pipeline and is used for outputting solder paste in the solder paste barrel, and a switch valve is arranged on the filling head; the conveying belt is arranged on the rack and provided with a plurality of positioning grooves used for positioning needle tubes, the positioning grooves are distributed at equal intervals in the conveying direction of the conveying belt, and the conveying belt is used for driving the positioning grooves to be sequentially opposite to the discharging ends of the filling heads; the controller and the time relay are both arranged on the rack, the controller is electrically connected with the switch valve, the conveying belt and the time relay, and the time relay is used for setting the filling time and the interval time of filling actions. The solder paste continuous filling equipment provided by the utility model can solve the problem of how to improve the filling efficiency of the needle tube solder paste.

Description

Technical Field

[0001] The utility model relates to the field of solder paste filling equipment, and particularly relates to a continuous solder paste filling equipment. Background Art

[0002] Solder paste is a core material used for soldering electronic components. In actual production, it is formed by mixing solder powder particles, flux, and other surface active agents to form a paste-like mixture. After preparation, the solder paste needs to be packaged and filled into syringes for subsequent soldering use.

[0003] However, most of the current solder paste filling equipment on the market adopts an intermittent working mode. That is, after each syringe is filled, the equipment needs to pause. After the filled syringe is replaced with an empty syringe manually, the equipment is restarted for the next filling. This discontinuous work process not only reduces the filling efficiency of the syringe with solder paste but also increases the idle time of the equipment, restricting the overall production capacity of the production line. And during the filling process, the syringe nozzle is usually in an open state, and impurities such as dust and particles in the air may enter the solder paste in the syringe through the nozzle, contaminating the solder paste and may also have an adverse impact on the soldering quality of the solder paste.

[0004] In view of the above problems, developing a solder paste filling equipment that can achieve continuous filling and has a dust-proof function is of great significance for improving the filling efficiency of the syringe with solder paste and ensuring the soldering quality of electronic products. Summary of the Utility Model

[0005] (I) Technical Problems to be Solved

[0006] The utility model provides a continuous solder paste filling equipment, which can at least solve the technical problem of how to improve the filling efficiency of the syringe with solder paste.

[0007] (II) Technical Solutions

[0008] To solve the above technical problems, the utility model provides the following technical solutions: A continuous solder paste filling equipment, comprising:

[0009] A frame;

[0010] A solder paste cylinder, arranged on the frame and used for storing the solder paste to be filled;

[0011] A filling head, which is liftably arranged on the frame and is connected to the solder paste cylinder through a pipeline, and is used for outputting the solder paste in the solder paste cylinder. A switch valve is arranged on the filling head, and the switch valve is used to control the opening and closing of the discharge end of the filling head;

[0012] The conveyor belt is arranged on the frame and is provided with a plurality of positioning grooves for positioning the needle tubes. The positioning grooves are evenly spaced along the conveying direction of the conveyor belt. The conveyor belt is used to drive each positioning groove to be opposite to the discharge end of the filling head in sequence.

[0013] The controller and the time relay are both arranged on the frame. The controller is electrically connected to the switch valve, the conveyor belt and the time relay respectively. The time relay is used to set the filling time and the interval time of the filling action, and sends the filling signal and the filling end signal to the controller at the end of the interval time and the filling time respectively. The controller is used to receive the filling signal and the filling end signal, and control the start and stop of the conveyor belt and the switch of the switch valve.

[0014] It is further provided that the aforementioned switch valve includes a pneumatic shut-off valve, a pneumatic solenoid valve and a constant pressure device, the pneumatic shut-off valve is arranged on the filling head, the pneumatic solenoid valve is respectively connected to the pneumatic shut-off valve and the constant pressure device through pipelines, the pneumatic solenoid valve is also electrically connected to the controller, and the controller is also used to control the switch of the pneumatic solenoid valve;

[0015] Among them, when the pneumatic solenoid valve is opened, the constant pressure device is used to adjust the air pressure and supply air to the pneumatic cut-off valve to open the pneumatic cut-off valve; when the pneumatic solenoid valve is closed, the constant pressure device stops supplying air to close the pneumatic cut-off valve.

[0016] It is further provided that the aforementioned solder paste continuous filling device also includes an in-place sensor, the in-place sensor is arranged on one side of the filling head, and the controller is also electrically connected to the in-place sensor;

[0017] The in-position sensor is used to detect whether a needle tube is placed in the positioning groove relative to the discharge end of the filling head, and when the needle tube is detected, it sends an in-position signal to the controller.

[0018] It is further configured that the aforementioned solder paste continuous filling equipment also includes a lifting drive component, which is arranged on the frame and is transmission-connected to the filling head. The lifting drive component is used to drive the filling head to move toward or away from the corresponding positioning groove, and the controller is also electrically connected to the lifting drive component.

[0019] Further, the aforementioned needle tube comprises:

[0020] A dust cover, the dust cover is provided with a clearance hole adapted to the discharge end of the filling head;

[0021] The dust-proof component includes several sliders and elastic members. Each slider is slidably disposed in the dust-proof cover along the radial direction of the relief hole and is annularly distributed around the axial direction of the relief hole. The elastic member is disposed in the dust-proof cover and is connected to one end of the slider for driving the slider to slide towards the relief hole so that the other ends of the sliders abut against each other in the relief hole to combinatorially seal the relief hole. A guiding surface is provided on the other end of the slider for abutting against the discharging end of the filling head and guiding the slider to slide in the direction of compressing the elastic member to open the relief hole.

[0022] Further, the distance between the aforesaid guiding surface and the opening end face of the relief hole gradually increases along the radial direction of the relief hole and away from the axis of the relief hole.

[0023] Further, the aforesaid guiding surface is a flat inclined surface or an arc surface.

[0024] (III) Beneficial effects

[0025] Compared with the prior art, a solder paste continuous filling device provided by the present utility model has the following

[0026] beneficial effects:

[0027] When the solder paste continuous filling device provided by the present utility model is in use, first, set the filling time of the time relay and the interval time of the filling action, and then sequentially place the empty syringes in the respective positioning grooves at the front end of the conveying direction of the filling head; when the interval time ends, the controller receives the filling signal sent by the time relay and controls the conveyor belt to pause. At this time, a positioning groove on the conveyor belt is opposite to the discharging end of the filling head. At the same time, the controller controls the switching valve to open the discharging end of the filling head to start filling. The filling head injects the solder paste in the solder paste cylinder into the empty syringe on the positioning groove until the filling time ends. The controller receives the end filling signal sent by the time relay, the controller controls the switching valve to close the discharging end of the filling head to end the filling, and controls the conveyor belt to start running to drive each positioning groove to move until the interval time ends. The controller receives the filling signal sent by the time relay again and controls the conveyor belt to stop, so that the next positioning groove and the empty syringe thereon are opposite to the discharging end of the filling head, and so on continuously. It can be seen that the solder paste continuous filling device can set the filling time and the interval time of the filling action through the time relay, and in combination with the controller, can control the start and stop of the conveyor belt and the opening and closing of the switching valve, thereby realizing continuous filling of the syringe with solder paste, without pausing the device to replace the syringe, and greatly improving the filling efficiency of the syringe with solder paste. Description of the drawings

[0028] Figure 1 It is a three-dimensional view of the solder paste continuous filling device in the embodiment;

[0029] Figure 2Schematic diagram of the connection of the conveyor belt, controller, time relay, and switching valve in the embodiment;

[0030] Figure 3 is Figure 1 Enlarged schematic diagram at position A in

[0031] Figure 4 Cross-sectional view of the filling head, dust-proof cover, and dust-proof assembly at the first position in the embodiment;

[0032] Figure 5 Cross-sectional view of the filling head, dust-proof cover, and dust-proof assembly at the second position in the embodiment;

[0033] Figure 6 Cross-sectional view of the filling head, dust-proof cover, and dust-proof assembly at the third position in the embodiment.

[0034] Reference numerals in the drawings:

[0035] 1. Frame; 2. Solder paste cylinder; 3. Filling head;

[0036] 4. Conveyor belt; 41. Positioning groove;

[0037] 5. Control cabinet; 51. Controller; 52. Time relay; 53. Button; 54. Display screen;

[0038] 6. Switching valve; 61. Pneumatic cut-off valve; 62. Pneumatic solenoid valve; 63. Constant pressure device;

[0039] 7. Syringe; 71. Dust-proof cover; 711. Relief hole; 72. Dust-proof assembly; 721. Slide block; 7211. Guide surface; 722. Elastic member;

[0040] 8. Lifting drive member; 9. In-place sensor. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0042] The present invention provides a continuous solder paste filling device for solving the problem of how to improve the filling efficiency of the solder paste in the syringe 7.

[0043] Refer to Figure 1 and Figure 2 as shown, Figure 1 is a perspective view of the continuous solder paste filling device in the embodiment, Figure 2It is a schematic connection diagram of a conveyor belt, a controller, a time relay and a switching valve in the embodiment. The solder paste continuous filling equipment includes a frame 1, a solder paste cylinder 2, a filling head 3, a conveyor belt 4, a controller 51 and a time relay 52.

[0044] The solder paste cylinder 2 is arranged on the frame 1 by means of screwing or welding, etc., and the solder paste cylinder 2 is used to store the solder paste to be filled.

[0045] The filling head 3 is arranged on the frame 1 in a liftable manner and is connected to the solder paste cylinder 2 through a pipeline. The filling head 3 is used to output the solder paste in the solder paste cylinder 2. A switching valve 6 is installed on the filling head 3, and the switching valve 6 is used to control the opening and closing of the discharging end of the filling head 3.

[0046] The conveyor belt 4 is installed on the frame 1, and there are a number of positioning grooves 41 for positioning the syringe 7 on the conveyor belt 4. The positioning grooves 41 are equally spaced along the conveying direction of the conveyor belt 4. The conveyor belt 4 is used to drive each positioning groove 41 to be sequentially opposite to the discharging end position of the filling head 3.

[0047] Both the controller 51 and the time relay 52 are installed on the frame 1. The controller 51 is electrically connected to the switching valve 6, the conveyor belt 4 and the time relay 52 respectively. The time relay 52 is used to set the filling time and the interval time of the filling action, and send a filling signal to the controller 51 at the end of the interval time, and send an end filling signal to the controller 51 at the end of the filling time. The controller 51 is used to receive the filling signal and the end filling signal, and control the start and stop of the conveyor belt 4 and the opening and closing of the switching valve 6.

[0048] When the solder paste continuous filling equipment of the above technical solution is in use, first, set the filling time of the time relay 52 and the interval time of the filling action, and then place the empty syringe 7 in each positioning groove 41 at the front end of the conveying direction of the filling head 3 in turn; when the interval time ends, the controller 51 controls the conveyor belt 4 to pause according to the filling signal sent by the time relay 52 received. At this time, a positioning groove 41 on the conveyor belt 4 is opposite to the discharge end of the filling head 3. At the same time, the controller 51 controls the switch valve 6 to open the discharge end of the filling head 3 to start filling. The filling head 3 injects the solder paste in the solder paste cylinder 2 into the empty syringe 7 on the positioning groove 41 until the filling time ends. The controller 51 controls the switch valve 6 to close the discharge end of the filling head 3 according to the end filling signal sent by the time relay 52 received, ends the filling, and controls the conveyor belt 4 to start running to drive each positioning groove 41 to move until the interval time ends. The controller 51 controls the conveyor belt 4 to pause again according to the filling signal sent by the time relay 52 received, so that the next positioning groove 41 and the empty syringe 7 on it are opposite to the discharge end of the filling head 3, and this is repeated continuously. It can be seen that the solder paste continuous filling equipment can set the filling time and the interval time of the filling action through the time relay 52, and combined with the controller 51, it can control the start and stop of the conveyor belt 4 and the opening and closing of the switch valve 6, so as to realize continuous filling of the syringe 7 with solder paste, without pausing the equipment to replace the syringe 7, greatly improving the filling efficiency of the syringe 7 with solder paste.

[0049] A stirring mechanism can be installed in the above solder paste cylinder 2. In this way, materials such as solder powder and soldering flux can be directly stirred and mixed in the solder paste cylinder 2 through the stirring mechanism to form solder paste, and the solder paste can be directly output by the filling head 3.

[0050] The diameter of the above positioning groove 41 is the same as that of the syringe 7. In this way, inserting the syringe 7 into the positioning groove 41 can quickly position the syringe 7, which is very convenient. The above switch valve 6 can use an existing electric control valve.

[0051] A control cabinet 5 is provided on the above frame 1. The controller 51 can use an existing controller, and the time relay 52 can use an existing cycle time relay. The controller 51 and the time relay 52 can both be installed in the control cabinet 5. The control cabinet 5 can effectively protect the controller 51 and the time relay 52. Buttons 53 and a display screen 54 can also be provided on the upper surface of the control cabinet 5, which is convenient for the staff to set the filling time of the time relay 52 and the interval time of the filling action without opening and closing the control cabinet 5.

[0052] Refer to Figure 1 、 Figure 2 and Figure 3 as shown, Figure 3 is Figure 1An enlarged schematic view of part A. In one embodiment of the switching valve 6, the switching valve 6 includes a pneumatic cut-off valve 61, a pneumatic solenoid valve 62, and a constant pressure device 63. The pneumatic cut-off valve 61 is installed on the filling head 3. The pneumatic solenoid valve 62 is connected to the pneumatic cut-off valve 61 and the constant pressure device 63 through pipelines respectively. The pneumatic solenoid valve 62 is also electrically connected to the controller 51, and the controller 51 is also used to control the opening and closing of the pneumatic solenoid valve 62. Among them, when the pneumatic solenoid valve 62 is opened, the constant pressure device 63 is used to adjust the air pressure and supply air to the pneumatic cut-off valve 61 to open the pneumatic cut-off valve 61; when the pneumatic solenoid valve 62 is closed, the constant pressure device 63 stops supplying air to close the pneumatic cut-off valve 61. In this way, the opening and closing of the pneumatic solenoid valve 62 can connect or cut off the constant pressure device 63 and the pneumatic cut-off valve 61. When the constant pressure device 63 and the pneumatic cut-off valve 61 are connected, the constant pressure device 63 can pneumatically drive the pneumatic cut-off valve 61 to open quickly, so as to open the discharge end of the filling head 3. When the constant pressure device 63 and the pneumatic cut-off valve 61 are cut off, the air supply to the pneumatic cut-off valve 61 can be stopped, so that the pneumatic cut-off valve 61 closes quickly and the filling ends. It can be seen that the solder paste continuous filling device cooperates with the pneumatic cut-off valve 61, the pneumatic solenoid valve 62, and the constant pressure device 63 to pneumatically switch the filling head 3, with a fast switching speed, capable of quickly responding to the instructions of the controller 51 and accurately controlling the filling volume.

[0053] The above pneumatic solenoid valve 62 can also be connected to the top of the solder paste cylinder 2 through a pipeline. The bottom of the solder paste cylinder 2 is connected to the filling head 3 through a pipeline. The pneumatic cut-off valve 61 can be installed on the filling head 3 or on the pipeline between the solder paste cylinder 2 and the filling head 3. In this way, when the pneumatic solenoid valve 62 is opened, while the constant pressure device 63 adjusts the air pressure to open the pneumatic cut-off valve 61, it can also pneumatically assist the smooth output of the solder paste in the solder paste cylinder 2, killing two birds with one stone.

[0054] Refer to Figure 1 and Figure 2 As shown, on the basis of any of the above embodiments, the solder paste continuous filling device further includes a position sensor 9. The position sensor 9 is installed on one side of the filling head 3, and the controller 51 is also electrically connected to the position sensor 9. Among them, the position sensor 9 is used to detect whether a syringe 7 is placed in the positioning groove 41 opposite to the discharge end position of the filling head 3, and when the syringe 7 is detected, it sends a position signal to the controller 51. In this way, after receiving the position signal and the filling signal, the controller 51 controls the switching valve 6 to open for filling operation, effectively avoiding the filling head 3 injecting the solder paste into the positioning groove 41 without the syringe 7 placed, resulting in waste. If the controller 51 receives the filling signal but does not receive the position signal, the controller 51 controls the conveyor belt 4 to stop running, and an alarm can also be issued to ensure the safety and accuracy of the filling operation.

[0055] The above-mentioned in-position sensor 9 can use a sensor such as an infrared sensor that can detect whether an object enters a sensing range.

[0056] See also Figure 1 and Figure 2 As shown, on the basis of any of the above embodiments, the solder paste continuous filling device further includes a lifting drive member 8, which is arranged on the frame 1 by screw connection or welding, and is transmission-connected with the filling head 3. The lifting drive member 8 is used to drive the filling head 3 to move toward or away from the corresponding positioning groove 41, and the controller 51 is also electrically connected to the lifting drive member 8. In this way, when the controller 51 receives the filling signal, it controls the lifting drive member 8 to drive the filling head 3 to move toward the corresponding positioning groove 41, so as to extend the discharge end of the filling head 3 into the empty needle tube 7 of the positioning groove 41, so as to accurately inject the solder paste into the empty needle tube 7, so as to avoid the solder paste splashing outside the needle tube 7 during the filling process, causing waste; and when the controller 51 receives the filling end signal, it controls the lifting drive member 8 to drive the filling head 3 to move away from the corresponding positioning groove 41, so as to move the filling head 3 out of the needle tube 7, effectively avoiding the phenomenon of interference between the needle tube 7 and the filling head 3 during the process of the conveyor belt 4 driving each positioning groove 41 to move.

[0057] The lifting stroke of the lifting drive 8 driving the filling head 3 can be set shorter, as long as it is ensured that the filling head 3 does not interfere with the needle tube 7, and the descending stroke is set accordingly, as long as the discharge end of the filling head 3 is extended into the empty needle tube 7. In addition, the lifting drive 8 can use a linear displacement mechanism such as a telescopic cylinder or an electric telescopic rod, and the output end of the lifting drive 8 is welded or screwed to the filling head 3. The in-place sensor 9 can be welded or screwed to the frame 1, or it can be welded or screwed to the output end of the lifting drive 8 together with the filling head 3.

[0058] See also Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, Figure 4 is a cross-sectional view of the filling head, the dust cover and the dustproof assembly in the first position in the embodiment, Figure 5 is a cross-sectional view of the filling head, the dust cover and the dustproof assembly in the second position in the embodiment, Figure 6A cross-sectional view of the filling head, dust-proof cover, and dust-proof component in the third position in the embodiment. In one implementation of the syringe 7, the syringe 7 includes a dust-proof cover 71 and a dust-proof component 72. The dust-proof cover 71 has a relief hole 711, and the relief hole 711 is adapted to the discharge end of the filling head 3. The dust-proof component 72 includes a plurality of sliders 721 and elastic members 722. Each slider 721 is slidably connected to the inside of the dust-proof cover 71 along the radial direction of the relief hole 711 and is annularly distributed around the axial direction of the relief hole 711. The elastic member 722 is disposed inside the dust-proof cover 71 and is connected to one end of the slider 721 for driving the slider 721 to slide towards the relief hole 711 so that the other ends of the sliders 721 abut against each other inside the relief hole 711 to jointly close the relief hole 711. And a guiding surface 7211 is provided on the other end of the slider 721. The guiding surface 7211 is used to abut against the discharge end of the filling head 3 and guide the slider 721 to slide in the direction of compressing the elastic member 722 to open the relief hole 711. Thus, before filling, the lifting driving member 8 drives the filling head 3 to move towards the empty syringe 7 corresponding to the positioning groove 41. When the filling head 3 is inserted downward into the relief hole 711, it will abut against the guiding surface 7211, driving the slider 721 to slide and open the relief hole 711, so that the discharge end of the filling head 3 can continue to pass downward through the relief hole 711 and communicate with the inside of the syringe 7, so that the filling head 3 can inject the solder paste into the syringe 7. Since the relief hole 711 is adapted to the discharge end of the filling head 3, during the filling process, the discharge end of the filling head 3 can close the relief hole 711, effectively preventing dust and other impurities from falling into the syringe through the relief hole 711 during the filling process; after filling, the lifting driving member 8 drives the filling head 3 to return to its original position. When the filling head 3 moves upward out of the relief hole 711, the slider 721 will quickly close the relief hole 711 under the pressure of the elastic member 722, effectively preventing dust and other impurities from falling into the syringe through the relief hole 711 before and after filling. It can be seen that the solder paste continuous filling device can effectively seal the opening of the syringe 7 through the dust-proof cover 71 and the dust-proof component 72 thereon, preventing dust, particles and other impurities in the air from entering the inside of the syringe 7 and contaminating the solder paste, so as not to affect the soldering quality of the solder paste.

[0059] The above elastic member 722 can use a spring. One end of the spring can be tightly abutted or adhesively fixed inside the dust-proof cover 71, and the other end of the spring can be tightly abutted or adhesively fixed to one end of the slider 721. In this embodiment, both the number of sliders 721 and elastic members 722 is 4.

[0060] Refer to Figure 4As shown, in one embodiment of the guiding surface 7211, the distance between the guiding surface 7211 and the opening end surface of the relief hole 711 gradually increases along the radial direction of the relief hole 711 and away from the axis of the relief hole 711. In this way, when the filling head 3 is inserted downward into the relief hole 711 and abuts tightly against the guiding surface 7211, the guiding surface 7211 can guide the sliding block 721 to slide away from the axis of the relief hole 711 under the pressure of the filling head 3, so that the filling head 3 can communicate with the inside of the syringe needle 7.

[0061] Referring to Figure 4 As shown, on the basis of the above embodiment, the guiding surface 7211 is a flat inclined surface or an arc surface.

[0062] The above flat inclined surface extends obliquely upward along the radial direction of the relief hole 711 from the axis of the relief hole 711.

[0063] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A solder paste continuous filling device, characterized in that, include: frame; A solder paste cylinder, arranged on the frame, for storing solder paste to be filled; A filling head is liftably arranged on the frame and connected to the solder paste cylinder through a pipeline, and is used to output the solder paste in the solder paste cylinder. A switch valve is provided on the filling head, and the switch valve is used to control the switch of the discharge end of the filling head; A conveyor belt is arranged on the frame and is provided with a plurality of positioning grooves for positioning the needle tubes, the positioning grooves are evenly spaced along the conveying direction of the conveyor belt, and the conveyor belt is used to drive each of the positioning grooves to be opposite to the discharge end of the filling head in sequence; A controller and a time relay are both arranged on the frame. The controller is electrically connected to the switch valve, the conveyor belt and the time relay respectively. The time relay is used to set the filling time and the interval time of the filling action, and sends a filling signal and an end-filling signal to the controller at the end of the interval time and the filling time respectively. The controller is used to receive the filling signal and the end-filling signal, and control the start and stop of the conveyor belt and the switch of the switch valve.

2. The continuous solder paste filling device according to claim 1, wherein The switch valve includes a pneumatic shut-off valve, a pneumatic solenoid valve and a constant pressure device. The pneumatic shut-off valve is arranged on the filling head. The pneumatic solenoid valve is respectively connected to the pneumatic shut-off valve and the constant pressure device through pipelines. The pneumatic solenoid valve is also electrically connected to the controller. The controller is also used to control the switch of the pneumatic solenoid valve. When the pneumatic solenoid valve is opened, the constant pressure device is used to adjust the air pressure and supply air to the pneumatic shut-off valve to open the pneumatic shut-off valve; when the pneumatic solenoid valve is closed, the constant pressure device stops supplying air to close the pneumatic shut-off valve.

3. A solder paste continuous filling device according to claim 1 or 2, characterized in that, The solder paste continuous filling device also includes an in-place sensor, which is arranged on one side of the filling head, and the controller is also electrically connected to the in-place sensor; The in-position sensor is used to detect whether the needle tube is placed in the positioning groove relative to the discharge end of the filling head, and sends an in-position signal to the controller when the needle tube is detected.

4. A solder paste continuous filling device according to claim 1 or 2, characterized in that The solder paste continuous filling equipment also includes a lifting drive component, which is arranged on the frame and is transmission-connected to the filling head. The lifting drive component is used to drive the filling head to move toward or away from the corresponding positioning groove. The controller is also electrically connected to the lifting drive component.

5. The continuous solder paste filling device according to claim 4, wherein, The needle tube comprises: A dust cover, wherein the dust cover is provided with a clearance hole adapted to the discharge end of the filling head; The dustproof assembly includes a plurality of sliders and elastic members, each of which is arranged in the dustproof cover for radial sliding along the give-way hole and is distributed in an axial ring around the give-way hole. The elastic member is arranged in the dustproof cover and connected to one end of the slider, and is used to drive the slider to slide toward the give-way hole so that the other ends of each slider abut against each other in the give-way hole to combine and close the give-way hole, and a guide surface is provided on the other end of the slider, and the guide surface is used to abut against the discharge end of the filling head and guide the slider to slide in the direction of compressing the elastic member to open the give-way hole.

6. The continuous solder paste filling device according to claim 5, characterized in that, The distance between the guiding surface and the opening end surface of the relief hole gradually increases along the radial direction of the relief hole away from the axis of the relief hole.

7. The continuous solder paste filling device according to claim 6, characterized in that, The guiding surface is a flat inclined surface or an arc surface.

Images