A splash-proof tin soldering paste printing device

Abstract

The application discloses a kind of anti-splashing tin soldering solder paste printing equipment, it is related to circuit board assembly manufacturing technical field, including printing equipment ontology, solder paste printing head subassembly is arranged in printing equipment ontology, the inner wall of printing equipment ontology is slidably connected with welding slag collecting frame, welding slag collecting frame and solder paste printing head subassembly between being provided with mounting frame, the lower portion of mounting frame is provided with brush plate, the inner wall of printing equipment ontology is rotatably connected with two anti-splashing door shafts, the shaft wall of two anti-splashing door shafts is fixedly connected with anti-splashing door, mounting frame is provided with mounting component, it further includes two groups of turnover components, two groups of turnover components are arranged in printing equipment ontology, so that mounting frame is first vertically moved down, after self overturning, vertically moves up again, it further includes cleaning component, cleaning component is drivingly connected with two groups of turnover components, the above-mentioned structure is cooperated with each other, has when to the circuit board is carried out solder paste printing, improves the degree of operation convenience, the effect of facilitating use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circuit board assembly manufacturing, in particular to a splash-proof solder paste spraying and printing equipment. BACKGROUND

[0002] SMT production process refers to a kind of electronic assembly technology using solder paste printing machine to assemble electronic components on the surface of circuit board, and directly welding to the surface of circuit board through soldering, which is widely used in integrated circuit board production. Integrated circuit board is the basis and core of electronic equipment, and bears important functions such as connecting and supporting electronic components, transmitting signals and providing power supply. In the welding and installation process of integrated circuit board, two-sided welding is required. When the traditional spraying and printing equipment sprays and prints the solder paste on the circuit board, the circuit board needs to be disassembled from the positioning device, turned over and installed, and then welded. Such operation is undoubtedly very troublesome, and the work efficiency of solder paste spraying and printing on the circuit board is low.

[0003] The existing soldering device, such as the published patent with patent number CN202210073606.2 and patent name "intelligent soldering equipment for integrated circuit board production of liquid crystal display", controls the "rotary driving disc" to turn over the circuit board after one-side soldering, so as to change the welding work surface and solve the problem of low efficiency of solder paste spraying and printing in traditional way. However, the device has many inconveniences in actual use, such as the difficulty of ensuring the horizontal state of the turned-over circuit board for the operator, the need to adjust the rotation while observing to ensure that the circuit board does not tilt, and the fact that the "brush" of the device will be contaminated with a large amount of welding slag when a large number of integrated circuit boards are used, which makes it difficult to achieve the ideal effect designed in actual use. Therefore, the operator needs to intervene many times in the soldering of one circuit board, and the negative impact of this defect will be amplified when dealing with multiple batches of circuit board solder paste spraying and printing work in a production line. Therefore, the traditional device is inconvenient to use, and the convenience needs to be improved when the operator performs multiple batches of spraying and printing work. SUMMARY

[0004] The present application aims to provide a splash-proof solder paste spraying and printing equipment, which improves the operation convenience and facilitates use when spraying and printing solder paste on the circuit board, and solves the problems mentioned in the background technology.

[0005] In order to achieve the above object, the present application provides the following technical scheme: A splash-proof solder paste printing equipment for soldering tin, comprising a printing equipment body, a solder paste nozzle assembly is arranged in the printing equipment body, a welding slag collecting frame is slidably connected to the inner wall of the printing equipment body, an installation frame is arranged between the welding slag collecting frame and the solder paste nozzle assembly, a brush plate is arranged below the installation frame, two splash-proof door shafts are rotatably connected to the inner wall of the printing equipment body, a splash-proof door is fixedly connected to the shaft wall of each of the two splash-proof door shafts, and an installation component is arranged on the installation frame.

[0006] Two sets of turnover components are further included, and each set of the turnover components is arranged in the printing equipment body, so that the installation frame is first vertically moved downward, then turned over, and then vertically moved upward.

[0007] A cleaning component is further included and is in transmission connection with the two sets of turnover components, so that the brush plate is horizontally displaced while following the vertical displacement of the installation frame, and is deflected at the end of the displacement path.

[0008] Two sets of self-locking components and two sets of driving components are further included, and each set of the self-locking components is in transmission connection with each set of the turnover components, so as to control the state of the splash-proof door through the movement of the installation frame.

[0009] Optionally, the installation component comprises two clamping blocks, clamping rods are fixedly connected to the opposite sides of the two clamping blocks, the two clamping rods are slidably connected to the inner wall of the installation frame, installation springs are sleeved on the rod walls of the two clamping rods, and the two ends of the two installation springs are fixedly connected to the opposite sides of the two clamping blocks and the surface of the installation frame, respectively, and an installation groove is formed in the inner wall of the installation frame.

[0010] Optionally, the turnover component comprises a transmission rod, a turnover block is fixedly connected to the end of the transmission rod, a rotating shaft is rotatably connected to the inner wall of the turnover block, a limiting block is rotatably connected to the shaft wall of the rotating shaft, the limiting block is slidably connected to the inner wall of the printing equipment body, a functional disc is fixedly connected to the shaft wall of the rotating shaft, two fixed shafts are fixedly connected to the surface of the functional disc, a rotating rod is fixedly connected to the shaft wall of the rotating shaft, a connecting block one is rotatably connected to the end of the rotating rod, a turnover rod is fixedly connected to the bottom surface of the turnover block, a connecting block two is rotatably connected to the rod wall of the turnover rod, a turnover spring is fixedly connected to the opposite sides of the connecting block one and the connecting block two, two blocking rods are fixedly connected to the surface of the turnover block, the shaft wall of the rotating shaft is fixedly connected to the surface of the installation frame, a plastic rod is fixedly connected to the surface of the connecting block one, and the plastic rod is slidably connected to the inner wall of the connecting block two.

[0011] The inner wall of the printing equipment body is fixedly connected with a limiting rod, the bottom surface of the limiting rod is slidably connected with a displacement frame, the inner wall of the displacement frame is fixedly connected with two overturning shafts, and the inner wall of the displacement frame is fixedly connected with a triangular block.

[0012] Optionally, the cleaning component comprises a driving rod, the rod wall of the driving rod is fixedly connected with the end of the transmission rod, the inner wall of the printing equipment body is provided with a vertical slot for displacement of the driving rod, the bottom surface of the driving rod is fixedly connected with a limiting frame, the inner wall of the limiting frame is slidably connected with a sliding block, the inner wall of the sliding block is rotatably connected with a cleaning rod, the cleaning rod is two-section type, the end of the cleaning rod is fixedly connected with the end of the brush plate, the inner wall of the printing equipment body is provided with a cleaning slot for displacement of the cleaning rod, the rod wall of the cleaning rod is fixedly connected with a gear, the inner wall of the printing equipment body is fixedly connected with two sliding seats, the lower end of the upper sliding seat is fixedly connected with a rack, and the shaft wall of the rotating shaft on one side of the rack is fixedly connected with a knocking frame.

[0013] Optionally, the self-locking component comprises three insertion rods, the three insertion rods are fixedly connected with one side of the displacement frame close to the splash-proof door shaft, the shaft wall of the splash-proof door shaft is fixedly connected with three insertion discs, the inner wall of each of the three insertion discs is slidably connected with an insertion cylinder, the surface of each of the three insertion cylinders is fixedly connected with a self-locking spring, and the ends of the three self-locking springs are fixedly connected with the inner walls of the three insertion discs, respectively.

[0014] Optionally, the driving component comprises a motor, the motor is fixedly connected with the inner wall of the printing equipment body, the output end of the motor is fixedly connected with a reciprocating threaded rod, and the inner wall of the driving rod is provided with a reciprocating threaded hole through which the reciprocating threaded rod penetrates and is threadedly connected with the reciprocating threaded hole.

[0015] Optionally, the opposite sides of the sliding block and the brush plate are jointly fixedly connected with a warning spring, and the warning spring is sleeved on the rod wall of the cleaning rod.

[0016] Optionally, the surface of the splash-proof door is provided with a transparent window, and the size of the transparent window is adapted to the size of the splash-proof door.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] Firstly, when the back surface of the circuit board needs to be printed, the circuit board can be first moved downward to be away from the printing area where the tin paste nozzle assembly is located, then self-overturned, and then moved upward after the overturning is completed, so that the self-overturning function of the circuit board is achieved without manual control by the operator, the horizontal state of the circuit board after overturning is automatically ensured through the arrangement of the two blocking rods, the quality of the printed product is ensured, and the convenience of use is greatly improved.

[0019] Meanwhile, during the turning process, the circuit board will be turned over after moving down to the collection area near the bottom slag collection frame, and then moved close to the solder paste nozzle assembly, so as to provide sufficient turning space between the solder paste nozzle assembly and the circuit board, so that the turning is not affected when facing a circuit board with a larger width, so that the device has a wider application range and further improves the convenience of use;

[0020] And due to the elastic effect of the turning spring, the second half of the turning speed will be relatively fast, that is, after the circuit board is turned over, due to the characteristics of the structure, a small amplitude vibration will be generated when the turning is completed, and the side just completed with soldering is downward in the state of turning completion, the vibration can shake off a part of the slag thereon, which provides assistance for the cleaning of the brush plate, and when the brush plate processes this side, a large amount of slag will not be attached thereto, and since turning is performed in the bottom area, the position of the circuit board is relatively low when the vibration occurs, close to the bottom area, so that the slag shaken off is not easy to splash in the device, and will be directly collected, which is more convenient to use.

[0021] Secondly, the cooperation of the limiting frame, the cleaning rod and the gear enables the brush plate to move horizontally along the bottom surface of the circuit board when the circuit board moves up, so that a small amount of residual solder slag on the side that has completed soldering printing can be brushed off, thereby providing assistance to the operator and reducing the process required by the operator;

[0022] Meanwhile, when the circuit board is turned over, the knocking frame will also be driven to move at a relatively fast speed, and at this stage, the brush plate is located below the knocking frame, and through the rapid deflection of the knocking frame, the surface of the brush plate can be knocked to vibrate, so that the solder slag adhered to the brush plate can be shaken off and fall into the solder slag collection frame, thereby starting the periodic self-cleaning effect of the brush plate without the need for the operator to clean the brush plate;

[0023] And through the setting of the gear and the rack, the bristles of the brush plate can be downward when subjected to knocking vibration, so that the solder slag is more easily shaken off into the solder slag collection frame below, the self-cleaning effect is better, and a large amount of splashing condition will not occur, which is more friendly to the operator.

[0024] Thirdly, the cooperation of the plug-in disc, the splash-proof door shaft and the self-locking spring enables the splash-proof part of the device, i.e. the splash-proof door, to be limited when the other side of the circuit board is ready to receive printing, so that it is difficult to open, thereby prompting the operator that the soldering is not fully completed by providing resistance, so as to avoid the condition that the operator mistakenly opens the splash-proof door because he thinks that both sides of the circuit board have been printed;

[0025] Meanwhile, by adding a self-locking spring instead of partially locking the insert plate, the splash door can also act as a buffer when subjected to external forces caused by uncontrollable factors, and the splash-proof components will not be structurally damaged, further improving practicality and ease of use. Attached Figure Description

[0026] Figure 1 This is an isometric view of the present invention in its frontal view.

[0027] Figure 2 This is a cross-sectional axonometric view of the present invention in its frontal view.

[0028] Figure 3 This is a rear view of the mounting frame of the present invention inside the printing equipment body from a top-down perspective;

[0029] Figure 4 This is a schematic diagram showing the cooperation between the mounting frame and the brush plate of the present invention;

[0030] Figure 5 For the present invention Figure 4 Enlarged view of the structure at point A in the middle;

[0031] Figure 6 This is a cross-sectional view of the invention from a left-side perspective;

[0032] Figure 7 This is a schematic diagram of the transmission from the fixed axis to the displacement frame in the right-view perspective of the present invention;

[0033] Figure 8 For the present invention Figure 7 Enlarged view of the structure at point B;

[0034] Figure 9 For the present invention Figure 7 Axonometric drawing from a left-view perspective;

[0035] Figure 10 This is a front sectional view of the connecting portion of the limiting frame of the present invention;

[0036] Figure 11 For the present invention Figure 10 Enlarged view of the structure at point C;

[0037] Figure 12 This is a top sectional view of the insert plate connection portion of the present invention. Detailed Implementation

[0038] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.

[0039] Embodiment one:

[0040] Please refer to Figures 1 to 12 The present application provides a kind of anti-splashing tin solder paste printing equipment, including printing equipment body 1, tin paste spray head subassembly 2 is provided in printing equipment body 1, the inner wall of printing equipment body 1 is slidably connected with welding slag collecting frame 3, welding slag collecting frame 3 and tin paste spray head subassembly 2 between being provided with mounting frame 4, the lower portion of mounting frame 4 is provided with brush plate 5, the inner wall of printing equipment body 1 is rotatably connected with two anti-splashing door shafts 6, the shaft wall of two anti-splashing door shafts 6 is fixedly connected with anti-splashing door 7, and mounting frame 4 is provided with mounting component.

[0041] The printing equipment further includes two groups of turnover components, two groups of self-locking components and two groups of driving components, and cleaning components, the turnover components are arranged in the printing equipment body 1, the cleaning components are drivingly connected with the two groups of turnover components, and the two groups of self-locking components are drivingly connected with the two groups of turnover components.

[0042] The mounting component includes:

[0043] Two clamping blocks 8, the opposite sides of two clamping blocks 8 are fixedly connected with clamping rod 9, two clamping rods 9 are slidably connected to the inner wall of mounting frame 4, mounting spring 10 is sleeved on the rod wall of two clamping rods 9, and the two ends of two mounting springs 10 are respectively fixedly connected with the opposite sides of two clamping blocks 8 and the surface of mounting frame 4, and mounting groove is formed in the inner wall of mounting frame 4.

[0044] The turnover part comprises a transmission rod 11, an end of the transmission rod 11 is fixedly connected with a turnover block 12, an inner wall of the turnover block 12 is rotatably connected with a rotating shaft 13, a shaft wall of the rotating shaft 13 is rotatably connected with a limiting block 14, the limiting block 14 is slidably connected with an inner wall of the body 1 of the solder paste printing equipment, the shaft wall of the rotating shaft 13 is fixedly connected with a function disc 15, the surface of the function disc 15 is fixedly connected with two fixed shafts 16, the shaft wall of the rotating shaft 13 is fixedly connected with a rotating rod 17, an end of the rotating rod 17 is rotatably connected with a connecting block one 18, the bottom surface of the turnover block 12 is fixedly connected with a turnover rod 19, the rod wall of the turnover rod 19 is rotatably connected with a connecting block two 20, the opposite sides of the connecting block one 18 and the connecting block two 20 are jointly fixedly connected with a turnover spring 21, the surface of the turnover block 12 is fixedly connected with two blocking rods 22, the shaft wall of the rotating shaft 13 is fixedly connected with the surface of the mounting frame 4, the surface of the connecting block one 18 is fixedly connected with a plastic rod 43, the plastic rod 43 is slidably connected with the inner wall of the connecting block two 20, the inner wall of the body 1 of the solder paste printing equipment is fixedly connected with a limiting rod 23, the bottom surface of the limiting rod 23 is slidably connected with a displacement frame 24, the inner wall of the displacement frame 24 is fixedly connected with two turnover shafts 25, the inner wall of the displacement frame 24 is fixedly connected with a triangular block 42, the surface of the splash-proof door 7 is provided with a transparent window, the size of the transparent window is adapted to the size of the splash-proof door 7.

[0045] More specifically, the splash-proof door in the embodiment: the operator prepares to spray the circuit board, first place the circuit board on the mounting frame 4, by opening two clamping blocks 8, so that the two clamping rods 9 are slid on the inner wall of the mounting frame 4, so that the two mounting springs 10 are compressed, the circuit board is placed in the middle region of the two clamping blocks 8, and the end is inserted into the mounting slot provided on the mounting frame 4, that is, the full fixation of the circuit board is completed, and the splash-proof door 7 is closed after preparation, the solder paste printing head assembly 2 is started, and the solder paste is sprayed on the upward face of the circuit board, the splashing during the spraying is shielded by the splash-proof door 7, so as to avoid splashing outside and causing harm to the operator, after spraying the outer wall of one side, the operator can start the driving part to drive the circuit board to turn over, and the transmission rod 11 is reciprocally displaced in the vertical direction when the driving part is started.

[0046] When the transmission rod 11 moves vertically downward, the synchronous belt drives the turnover block 12 to move vertically downward, and the vertical downward movement of the turnover block 12 drives the rotating shaft 13 to move vertically downward, so that the vertical downward movement of the rotating shaft 13 drives the mounting frame 4 and the circuit board mounted thereon to move vertically downward, so that the circuit board moves away from the printing area where the tin paste nozzle assembly 2 is located. In this process, the synchronous belt drives the limiting block 14 to move, so that the limiting block 14 slides along the inner wall of the printing equipment body 1. During the downward movement of the rotating shaft 13, the synchronous belt drives the functional disc 15 to move vertically downward, so that the two fixed shafts 16 connected thereto move vertically downward. With the continuation of the downward movement process, the lower fixed shaft 16 will first contact the turnover shaft 25 on one side. Since the vertical height of the turnover shaft 25 remains unchanged, the turnover shaft 25 will push the lower fixed shaft 16 in this state during the subsequent downward movement process, driving the functional disc 15 to deflect. When the functional disc 15 deflects, the rotating shaft 13 will rotate synchronously, so that the circuit board is turned over. During the turning process, the rotating shaft 13 remains in a downward state, and at the same time, the rotating shaft 13 also drives the rotating rod 17 to move in a circular path during the turning process, so that the connecting block one 18 moves in a circular path, causing the turnover spring 21 to be compressed and deformed. During this process, the plastic rod 43 slides along the inner wall of the connecting block two 20. When the deflection exceeds 90°, the functional disc 15 will quickly turn over under the elastic action of the turnover spring 21 at this time. The fixed shaft 16 is separated from the turnover shaft 25, and at the same time, the rotating rod 17 will deflect at a relatively fast speed during this process until it contacts the blocking rod 22 and is blocked by the blocking rod 22. Thus, the turning is completed. After the turning is completed, the two fixed shafts 16 will no longer be located at the vertical position of the turnover shaft 25 on one side, but will be relatively close to the turnover shaft 25 on the other side without contacting it. Subsequently, the transmission rod 11 moves vertically upward, driving the turned circuit board to move upward again. When the upward movement is completed, the two fixed shafts 16 will contact the inclined surface of the triangular block 42 during the upward movement, which will drive the triangular block 42 to move horizontally, causing the displacement frame 24 to move horizontally along the rod wall of the limiting rod 23, and causing the two turnover shafts 25 to move horizontally, so that the turnover shaft 25 on the other side moves to the lower side of the two fixed shafts 16.

[0047] In the above manner, when it is necessary to print on the back of the circuit board, the circuit board is first moved downward away from the printing area where the tin paste nozzle assembly 2 is located, and then turned over. After the turning is completed, the circuit board is moved upward again. Thus, the self-turning function of the circuit board is achieved. The two blocking rods 22 can automatically ensure that the circuit board remains horizontal after turning over, ensuring the quality of the printed products and greatly improving the convenience of use.

[0048] And take this way, so that in the process of turning, the circuit board down, close to the bottom of the slag collection frame 3 is located in the collection area to turn, turn after the up, close to the solder paste nozzle assembly 2, so that the solder paste nozzle assembly 2 and the circuit board between the give enough space to turn, so that in the face of a larger width of the circuit board, turn also not affected, so that the device is more widely applicable, further improve the convenience of use.

[0049] At the same time, as can be seen from the above, in the second half of the path of the turning, due to the elastic effect of the turning spring 21, its speed will be relatively fast, until the contact between the rotating rod 17 and the blocking rod 22, the rotating rod 17 is forced to remain horizontal, so after the two are in contact, the rotating rod 17 will be considered to be knocked and shaken, that is, after the circuit board is turned, due to the characteristics of the structure, a small amplitude vibration will be generated when the turning is completed, in the state of turning, the just completed soldering side is downward, this vibration can shake off part of the solder on it, providing assistance for the operation of the cleaning part, and the vibration position is relatively low, close to the bottom area, so a large amount of solder is not easy to splash in the device, and the use is more convenient.

[0050] In example two, on the basis of the above examples:

[0051] Please refer to Figures 1 to 12 The cleaning part includes a driving rod 26, the rod wall of the driving rod 26 is fixedly connected with the end of the transmission rod 11, the inner wall of the printing equipment body 1 is provided with a vertical slot for displacement of the driving rod 26, the bottom surface of the driving rod 26 is fixedly connected with a limiting frame 27, the inner wall of the limiting frame 27 is slidably connected with a sliding block 28, the inner wall of the sliding block 28 is rotatably connected with a cleaning rod 29, the cleaning rod 29 is two-section type, the end of the cleaning rod 29 is fixedly connected with the end of the brush plate 5, the inner wall of the printing equipment body 1 is provided with a cleaning slot 30 for displacement of the cleaning rod 29, the rod wall of the cleaning rod 29 is fixedly connected with a gear 31, the inner wall of the printing equipment body 1 is fixedly connected with two sliding seats 32, the lower end of the upper sliding seat 32 is fixedly connected with a rack 33, the shaft wall of the rotating shaft 13 on one side of the rack 33 is fixedly connected with a knocking frame 34.

[0052] The driving part includes a motor 39, the motor 39 is fixedly connected to the inner wall of the printing equipment body 1, the output end of the motor 39 is fixedly connected with a reciprocating threaded rod 40, the inner wall of the driving rod 26 is provided with a reciprocating threaded hole for the reciprocating threaded rod 40 to pass through and threadedly connected therewith.

[0053] The opposite side of the sliding block 28 and the brush plate 5 is fixedly connected with a warning spring 41, and the warning spring 41 is sleeved on the rod wall of the cleaning rod 29.

[0054] More specifically, in the present embodiment: the operator can start the motor 39, so that the reciprocating threaded rod 40 rotates, causing the drive rod 26 to reciprocate vertically, and through the reciprocating displacement of the drive rod 26, the transmission rod 11 reciprocates vertically, and during the downward displacement of the drive rod 26, it will also drive the limiting frame 27 to move vertically downward, and when it moves downward, it will cause the slider 28 to move downward, thereby driving the cleaning rod 29 to move vertically downward, and when the cleaning rod 29 moves downward, it will slide along the groove wall of the cleaning groove 30, so that when the slider 28 moves downward, it will slide horizontally along the inner wall of the limiting frame 27, so that the brush plate 5 can slide horizontally, and during the downward or upward movement, the brush plate 5 will slide horizontally along the bottom surface of the circuit board once, and through this displacement, the dust on the bottom surface ready to be sprayed with solder can be brushed off when the circuit board moves downward, and the surface of the solder residue on the side that has completed the solder printing can be brushed off when the circuit board moves upward, thereby assisting the operator and reducing the process required by the operator. It is worth noting that when the circuit board is flipped, the brush plate 5 has already horizontally displaced to the flipping area of the circuit board, i.e. it will be located at the shaft 13 on one side, so it will not block the flipping of the circuit board.

[0055] As can be seen from the above, during the flipping of the circuit board, the latter half of the path will be faster, and at this stage, the shaft 13 will rotate at a faster speed, thereby causing the knocking frame 34 to also move at a faster circumferential displacement, and at this stage, the brush plate 5 is located below the knocking frame 34, and through the rapid deflection of the knocking frame 34, the surface of the brush plate 5 can be knocked, causing it to vibrate, thereby causing the solder residue adhering to the brush plate 5 to fall into the solder residue collection frame 3, thereby starting the periodic self-cleaning effect of the brush plate 5, without the need for the operator to clean the brush plate 5.

[0056] Meanwhile, during the displacement of the cleaning rod 29 along the groove wall of the cleaning groove 30, it will simultaneously drive the gear 31 to displace, and when the gear 31 engages with the rack 33, the displacement of the gear 31 will cause it to rotate, i.e. the cleaning rod 29 and the gear 31 will rotate at this time, thereby causing the brush plate 5 to rotate during this process, so that the bristles of the brush plate 5 can deflect downward, so that when they are subjected to knocking vibration, the solder residue is more easily removed, and the self-cleaning effect is better. As can be seen from the structural arrangement, during the vibration self-cleaning, the brush plate 5 is also located in the lower area within the device, and the solder residue can directly fall into the solder residue collection frame 3, without causing a large amount of splashing, and it is more friendly to the operator.

[0057] It is worth noting that when the cleaning rod 29 is displaced, the teeth of the gear 31 will be limited by the sliding seat 32 and will not rotate, thereby ensuring that the brush plate 5 will not be separated from the circuit board during operation, and the pre-warning spring 41 can further limit the state of the brush plate 5, ensuring that it will not be self-offset without being driven by external force.

[0058] Meanwhile, it is worth noting that after the other side of the circuit board is sprayed, the device is driven again so that the initially upward side is upward again, and the whole process of spraying the solder paste on the circuit board is completed. In this way, the product can be kept in the same state as when it is placed, which is convenient for the operator to place the materials.

[0059] In example three, based on the above examples:

[0060] Please refer to Figures 1 to 12 The self-locking part includes three insertion rods 35, which are fixedly connected to one side of the displacement frame 24 near the splash-proof door shaft 6. The shaft wall of the splash-proof door shaft 6 is fixedly connected with three insertion discs 36. The inner walls of the three insertion discs 36 are slidably connected with insertion cylinders 37. The surfaces of the three insertion cylinders 37 are fixedly connected with self-locking springs 38. The ends of the three self-locking springs 38 are respectively fixedly connected with the inner walls of the three insertion discs 36.

[0061] More specifically, in this embodiment: during the horizontal displacement of the above-mentioned displacement frame 24, the insertion rod 35 is driven to displace horizontally. After the tin soldering and spraying on one side of the circuit board is completed, the other side is turned upward and displaced until it is below the solder paste spraying head assembly 2. At this time, the horizontal displacement of the displacement frame 24 will cause the insertion rod 35 to be inserted into the insertion cylinder 37. Thus, in this state, if the splash-proof door 7 is opened, the splash-proof door shaft 6 will need to be rotated, and the rotation of the splash-proof door shaft 6 will cause the insertion disc 36 to be deflected. Since the insertion cylinder 37 is limited and cannot follow the deflection, the self-locking spring 38 will be compressed at this time, that is, the opening of the splash-proof door 7 will need to overcome a very large force.

[0062] In this way, when the other side of the circuit board is ready to receive spraying, the splash-proof part of the device, i.e., the splash-proof door 7, can be limited to make it difficult to open. In this way, the operator can be prompted to provide resistance to indicate that the soldering is not fully completed, so as to avoid the operator mistakenly thinking that both sides of the circuit board have been sprayed and opening the splash-proof door 7. Meanwhile, by adding the self-locking spring 38 instead of directly locking the insertion disc 36, if an uncontrollable external force is applied, the splash-proof door 7 can also act as a buffer, and the splash-proof part will not be structurally damaged, further improving the practicality and convenience of use.

[0063] Working principle: the splash-proof tin soldering solder paste printing equipment, the operator first places the circuit board on the installation frame 4, by opening two clamping blocks 8, so that two clamping rods 9 on the inner wall of the installation frame 4 slide, so that two installation springs 10 are compressed, the circuit board is placed in the middle region of two clamping blocks 8, and its end is inserted into the installation slot opened on the installation frame 4, that is, the full fixation of the circuit board is completed, and the preparation is completed. After closing the splash-proof door 7, the solder paste printing head assembly 2 is started, and the upward face of the circuit board in this state is subjected to solder paste printing work. In the process of printing, the splash-proof door 7 is used to shield the splashing during solder paste printing to avoid splashing outside and causing harm to the operator. After printing the outer wall of one side, the operator can start the motor 39 to drive the circuit board to move downward first, away from the printing area of the solder paste printing head assembly 2, and then turn over. After the turning over is completed, the circuit board is moved upward again. Thus, the self-turning function of the circuit board is achieved, and then the other side of the circuit board is printed. During the turning over process, the two blocking rods 22 are arranged to automatically ensure the horizontal state of the circuit board after turning over, ensuring the quality of the printed products.

[0064] When the circuit board moves downward, the brush plate 5 will also move downward and horizontally at the same time. Thus, through the movement of the brush plate 5, the solder residue on the side of the circuit board that has completed soldering and printing can be brushed off when the circuit board moves upward. This provides assistance to the operator and reduces the process required by the operator. It is worth noting that when the circuit board turns over, the brush plate 5 has horizontally displaced to be away from the turning area of the circuit board, that is, it is located at the shaft 13 on one side, so it will not block the turning of the circuit board. When the circuit board turns over, the knocking frame 34 also performs a fast circumferential displacement. At this stage, the brush plate 5 is located below the knocking frame 34. Through the rapid deflection of the knocking frame 34, the surface of the brush plate 5 can be knocked, so that it vibrates, thereby causing the solder residue adhered to the brush plate 5 to fall off and fall into the solder residue collecting frame 3, thereby starting the periodic self-cleaning effect of the brush plate 5, and the operator does not need to clean the brush plate 5 again.

[0065] When the other side of the circuit board is ready to accept printing, the insertion rod 35 on the displacement frame 24 will be inserted into the insertion cylinder 37, so that in this state, when the splash-proof door 7 is opened, the elastic force of the three self-locking springs 38 needs to be overcome, thereby providing resistance to prompt the operator that the soldering is not yet fully completed, so as to avoid the operator mistakenly opening the splash-proof door 7.

[0066] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A splash-proof solder paste jet printing apparatus for tin solder, comprising a jet printing apparatus body (1), characterized in that: The inkjet printing equipment body (1) is provided with a solder paste nozzle assembly (2), and a solder slag collection frame (3) is slidably connected to the inner wall of the inkjet printing equipment body (1). An installation frame (4) is provided between the solder slag collection frame (3) and the solder paste nozzle assembly (2). A brush plate (5) is provided below the installation frame (4). Two splash guards (6) are rotatably connected to the inner wall of the inkjet printing equipment body (1). A splash guard (7) is fixedly connected to the shaft wall of each of the two splash guards (6). An installation component is provided on the installation frame (4). The solder paste printing equipment also includes: Two sets of flipping components are provided inside the main body (1) of the inkjet printing equipment so that the mounting frame (4) moves vertically downward first, and then moves vertically upward after flipping. The cleaning component is connected to the two sets of the flipping components so that the brush plate (5) moves horizontally while following the vertical displacement of the mounting frame (4) and deflects at the end of the displacement path. Two sets of self-locking components and two sets of driving components are provided. The two sets of self-locking components are respectively connected to the two sets of flipping components to control the state of the splash door (7) through the movement of the mounting frame (4).

2. The splash-proof solder paste jet printing apparatus according to claim 1, characterized by: The mounting components include: Two clamping blocks (8) are provided, and clamping rods (9) are fixedly connected to the opposite sides of the two clamping blocks (8). The two clamping rods (9) are slidably connected to the inner wall of the mounting frame (4). The rod walls of the two clamping rods (9) are fitted with mounting springs (10). The two ends of the two mounting springs (10) are fixedly connected to the opposite sides of the two clamping blocks (8) and the surface of the mounting frame (4), respectively. The inner wall of the mounting frame (4) is provided with mounting grooves.

3. The splash-proof solder paste jet printing apparatus according to claim 2, characterized by: The flipping component includes: A transmission rod (11) is provided, with a rotating block (12) fixedly connected to its end. A rotating shaft (13) is rotatably connected to the inner wall of the rotating block (12). A limiting block (14) is rotatably connected to the shaft wall of the rotating shaft (13). The limiting block (14) is slidably connected to the inner wall of the inkjet printing equipment body (1). A function disk (15) is fixedly connected to the shaft wall of the rotating shaft (13). Two fixed shafts (16) are fixedly connected to the surface of the function disk (15). A rotating rod (17) is fixedly connected to the shaft wall of the rotating shaft (13). A connecting block (1) is rotatably connected to the end of the rotating rod (17). 18), the bottom surface of the flipping block (12) is fixedly connected to a flipping rod (19), the rod wall of the flipping rod (19) is rotatably connected to a connecting block two (20), the opposite sides of the connecting block one (18) and the connecting block two (20) are fixedly connected to a flipping spring (21), the surface of the flipping block (12) is fixedly connected to two blocking rods (22), the shaft wall of the rotating shaft (13) is fixedly connected to the surface of the mounting frame (4), the surface of the connecting block one (18) is fixedly connected to a plastic rod (43), and the plastic rod (43) is slidably connected to the inner wall of the connecting block two (20); The inner wall of the printing equipment body (1) is fixedly connected to a limiting rod (23), and a displacement frame (24) is slidably connected to the bottom surface of the limiting rod (23). The inner wall of the displacement frame (24) is fixedly connected to two flipping shafts (25), and a triangular block (42) is fixedly connected to the inner wall of the displacement frame (24).

4. The splash-proof solder paste jet printing apparatus according to claim 3, characterized by: The cleaning component includes: A drive rod (26) is fixedly connected to the end of the transmission rod (11). The inner wall of the inkjet printing equipment body (1) is provided with a vertical groove for the displacement of the drive rod (26). A limit frame (27) is fixedly connected to the bottom surface of the drive rod (26). A slider (28) is slidably connected to the inner wall of the limit frame (27). A cleaning rod (29) is rotatably connected to the inner wall of the slider (28). The cleaning rod (29) is a two-section rod. The end of the cleaning rod (29) is... The inner wall of the inkjet printing equipment body (1) is provided with a cleaning groove (30) for the cleaning rod (29) to move, and a gear (31) is fixedly connected to the rod wall of the cleaning rod (29). Two slides (32) are fixedly connected to the inner wall of the inkjet printing equipment body (1). A rack (33) is fixedly connected to the lower end of the upper slide (32). A knocking frame (34) is fixedly connected to the shaft wall of the rotating shaft (13) located on one side of the rack (33).

5. The splash-proof solder paste jet printing apparatus according to claim 4, characterized by: The self-locking component includes: Three insert rods (35) are fixedly connected to the side of the displacement frame (24) near the splash door shaft (6). Three insert discs (36) are fixedly connected to the shaft wall of the splash door shaft (6). Insert cylinders (37) are slidably connected to the inner walls of the three insert discs (36). Self-locking springs (38) are fixedly connected to the surface of the three insert cylinders (37). The ends of the three self-locking springs (38) are respectively fixedly connected to the inner walls of the three insert discs (36).

6. The splash-proof solder paste jet printing apparatus according to claim 5, characterized by: The driving component includes: The motor (39) is fixedly connected to the inner wall of the inkjet printing equipment body (1). The output end of the motor (39) is fixedly connected to a reciprocating threaded rod (40). The inner wall of the drive rod (26) is provided with a reciprocating threaded opening through which the reciprocating threaded rod (40) passes and is threadedly connected.

7. The splash-proof solder paste jet printing apparatus according to any one of claims 4 to 6, characterized in that: The slider (28) and the brush plate (5) are fixedly connected to a warning spring (41) on their opposite sides. The warning spring (41) is sleeved on the wall of the cleaning rod (29).

8. The anti-splatter solder paste spraying equipment according to any one of claims 2-6, characterized in that: The surface of the splash door (7) is provided with a transparent window, the size of which is adapted to the size of the splash door (7).

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