CN220031450U - Scraper device for solder paste printer - Google Patents

Abstract

The utility model discloses a scraper device for a solder paste printer, which comprises a box body, wherein rail rods are symmetrically and fixedly arranged on the inner wall of the box body, rail blocks are movably sleeved on the rail rods, and a scraper is fixedly connected to the bottom of each rail block; an electric telescopic rod is fixedly arranged on the inner wall of the box body between the two track rods, and one end of the electric telescopic rod is fixedly connected with the track blocks; one side of the inner part of the box body, which is far away from the electric telescopic rod, is provided with a wiping component for wiping the solder paste on the scraper. In the using process, the scraping strip can be used for extruding and wiping the scraper through the arrangement of the threaded screw rod, the screw rod sliding block, the movable blocks and the extruding plate, so that the wiping effect is better, after the wiping is finished, the flushing plate enters between the two movable blocks to flush the scraping strip, and the solder paste on the scraping strip is flushed, so that the next wiping effect is ensured.

Description

Scraper device for solder paste printer

Technical Field

The utility model relates to the technical field of printing scrapers, in particular to a scraper device for a solder paste printer.

Background

The solder paste printer is a device for printing solder paste on a PCB, which has the greatest influence on the process and quality, and at present, the solder paste printer is mainly divided into a semiautomatic printer and a full-automatic printer, and the semiautomatic printer is as follows: the operation is simple, the printing speed is fast, the structure is simple, the defects are that the number of controllable points of printing process parameters is less, the printing centering precision is not high, the tin paste demoulding is poor, the printing process is generally applicable to PCB printing processes with elements above 0603 (English system) and pin spacing more than 1.27mm, and the full-automatic printing machine is characterized in that: the printing centering precision is high, the tin paste demoulding effect is good, the printing process is stable, the printing technology is suitable for printing of the closely spaced elements, the defect is that the maintenance cost is high, the requirement on the knowledge level of operators is high, the most important part is the scraper in the using process of the semi-automatic printing machine or the full-automatic printing machine, and the optimization of the scraper is a main development direction in the whole technical field.

Among the prior art, a scraper device for solder paste printing machine of publication No. "CN211892398U", including the storehouse body, the intermediate position department at storehouse body top is provided with electronic cylinder, electronic cylinder's bottom is provided with the mounting panel, electronic cylinder output outside both sides intermediate position department symmetry is provided with the bracing piece, and bracing piece and the top interconnect of mounting panel, the top of the positive one end of electronic cylinder is provided with clearance subassembly. According to the device, through the mutual matching of the third connecting rod, the third sliding block, the second sliding groove, the fourth connecting rod, the third sliding groove, the fourth sliding block, the fifth connecting rod and the clamping plate, the scraper can be wiped, more solder paste is prevented from accumulating on the surface of the scraper, the scraping effect of the scraper is affected, and through the mutual matching of the water tank, the spring, the baffle, the wiping cloth, the second connecting rod, the second sliding block, the water pipe and the stop block, the scraper can be wiped once after being scraped, and the scraping effect of the device is further improved.

However, the prior art still has great disadvantages, such as:

in the above-mentioned device and prior art, most all wipe the solder paste on the scraper through wiping cloth, this kind of wiping can wipe the remaining solder paste on the scraper certainly, but in the in-service use process, a piece of wiping cloth need wipe the solder paste on the scraper many times, so once wiping cloth accomplishes the wiping action for the first time, follow-up wiping cloth can have the residue of solder paste, wipe the scraper again with the wiping cloth of remaining solder paste, also can be stained with on the scraper again on the wiping cloth, that is to say wiping cloth except for the first wiping action, follow-up wiping action can't be fine wipe the scraper, the device just wipes the scraper through the movable contact of both sides simultaneously, be difficult to guarantee the dynamics of wiping, lead to wiping uncleanly.

Disclosure of Invention

The present utility model is directed to a doctor device for a solder paste printer, which solves the above-mentioned problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the scraper device for the solder paste printer comprises a box body, wherein rail rods are symmetrically and fixedly arranged on the inner wall of the box body, rail blocks are movably sleeved on the rail rods, and scrapers are fixedly connected to the bottoms of the rail blocks;

an electric telescopic rod is fixedly arranged on the inner wall of the box body between the two track rods, and one end of the electric telescopic rod is fixedly connected with the track blocks;

one side of the inner part of the box body, which is far away from the electric telescopic rod, is provided with a wiping component for wiping the solder paste on the scraper.

Preferably, the wiping component comprises a fixed base fixedly arranged inside a box body, a mounting groove is formed in the fixed base, a threaded screw rod is arranged in the mounting groove in a rotating mode, the threaded screw rod is driven to rotate by a forward-reverse motor fixedly arranged inside the box body, a screw rod sliding block is movably sleeved on the threaded screw rod, a wiping groove is formed in the screw rod sliding block, a guide rod is fixedly arranged inside the wiping groove, a movable block is movably sleeved on the guide rod, a first spring is fixedly connected between the movable block and the inner wall of the wiping groove, a plurality of wiping strips are arranged on one side of the movable block in movable contact with a scraper at intervals, squeezing plates are symmetrically and fixedly arranged on two sides of the mounting groove, and the two squeezing plates enable the movable blocks to be mutually close to each other, so that the wiping strips can form squeezing wiping on the scraper.

Preferably, the unable adjustment base keeps away from the fixed water storage tank that is provided with of one side of positive reverse rotation motor, the water storage chamber has been seted up to the water storage tank inside, the water storage intracavity portion adds water through adding the water pipe, the inside activity of water storage chamber is provided with the pressure water board, pressure water board and water storage intracavity wall fixedly connected with second spring, the water storage tank is close to the fixed flushing plate that is provided with in one side of mounting groove, the flushing plate activity stretches into between two movable blocks, a plurality of apopores have been seted up on the flushing plate, apopore and water storage chamber intercommunication, the extrusion pole that the water storage tank was stretched out in the activity of pressure water board fixedly connected with, extrusion pole and lead screw slider movable contact.

Preferably, the inner wall of the box body is fixedly connected with a press-contact switch electrically connected with the forward and reverse rotating motor, and the press-contact switch is in movable contact with a trigger rod fixedly connected to the track block.

Preferably, the mounting groove and the wiping groove are through grooves.

Preferably, the wiping strip is a sponge strip.

Preferably, the tank body is fixedly provided with a collecting tank at the bottom of the mounting tank.

Preferably, the water feeding pipe is internally and fixedly provided with a one-way valve.

Compared with the prior art, the utility model has the beneficial effects that:

1. through the arrangement of the threaded screw rod, the screw rod sliding block, the movable block and the extrusion plate, the wiping strip can extrude and wipe the scraper, so that the wiping effect is better;

2. under the action of the extrusion plate, the movable blocks are separated after the scraper is wiped, so that the flushing plate is convenient to enter between the two movable blocks;

3. in the process of the movement of the screw rod sliding block, the extrusion rod is extruded, water in the water storage tank is extruded out through the water outlet hole on the flushing plate, and the wiping strip is flushed;

in the using process, an operator opens the electric telescopic rod, the electric telescopic rod drives the track block to drive the scraper to scrape solder paste, when the scraper moves to the upper part of the fixed base, the extrusion rod extrudes the press-contact switch, the electric telescopic rod stops moving, the scraper keeps motionless, the screw rod sliding block is positioned at one side of the scraper, the forward and backward rotating motor starts to work to drive the screw rod to rotate, the screw rod sliding block moves, the scraper firstly enters between the two movable blocks, then under the action of the extrusion plate, the two movable blocks mutually approach to extrude and wipe the scraper, after the wiping is completed, the movable blocks move to the other end of the extrusion plate, the two movable blocks are separated, the flushing plate enters between the two movable blocks, under the action of the screw rod sliding block extruding the extrusion rod, water in the water storage tank is extruded through the water outlet hole on the flushing plate, the wiping strip is flushed, and then the operator or the motor is reversely rotated through the built-in chip, so that the screw rod sliding block is reset.

Drawings

FIG. 1 is a schematic view of the internal structure of the case of the present utility model;

FIG. 2 is a schematic view of a three-dimensional structure of a track block sleeved on a track rod according to the present utility model;

FIG. 3 is a schematic perspective view of a fixing base of the present utility model;

FIG. 4 is a schematic view of a three-dimensional structure of a screw slider according to the present utility model;

FIG. 5 is a top view of the stationary base of the present utility model;

FIG. 6 is a schematic view of the internal structure of the screw slider of the present utility model;

FIG. 7 is a schematic view of the internal structure of the water reservoir of the present utility model.

In the figure: 1. a case; 2. a track rod; 3. a track block; 4. a scraper; 5. an electric telescopic rod; 6. a fixed base; 601. a mounting groove; 7. a threaded screw rod; 8. a forward and reverse rotation motor; 9. a screw rod sliding block; 901. a wiping groove; 10. a guide rod; 11. a movable block; 111. a first spring; 12. a wiping strip; 13. an extrusion plate; 14. a water storage tank; 141. a water storage cavity; 15. a water supply pipe; 16. a water pressing plate; 161. a second spring; 17. a flush plate; 171. a water outlet hole; 18. an extrusion rod; 19. a pressure contact switch; 20. a trigger lever; 21. a collection box; 22. a one-way valve.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-7, the present utility model provides a technical solution:

embodiment one:

the scraper device for the solder paste printer comprises a box body 1, wherein track rods 2 are symmetrically and fixedly arranged on the inner wall of the box body 1, track blocks 3 are movably sleeved on the track rods 2, scrapers 4 are fixedly connected to the bottoms of the track blocks 3, two track rods 2 are symmetrically and fixedly arranged on the inner wall of the box body 1, the track blocks 3 of the embodiment are movably sleeved on the two track rods 2, and the arrangement can enable the track blocks 3 to move more stably;

the inner wall of the box body 1 between the two track rods 2 is fixedly provided with an electric telescopic rod 5, one end of the electric telescopic rod 5 is fixedly connected with the track block 3, the electric telescopic rod 5 in the embodiment can be controlled by an operator or a built-in chip, when the electric telescopic rod 5 is opened, the electric telescopic rod 5 drives the track block 3 and the scraper 4 to move along the track rod 2, the solder paste is scraped in the moving process, and when the scraper 4 moves to the upper part of the fixed base 6, the electric telescopic rod 5 stops moving for a period of time at the moment by the operator or the built-in chip or through a PLC (programmable logic controller), and the scraper 4 is conveniently scraped by the wiping component;

the side of the interior of the box body 1 far away from the electric telescopic rod 5 is provided with a wiping component for wiping the solder paste on the scraper 4.

The wiping component comprises a fixed base 6 fixedly arranged in the box body 1, the fixed base 6 in the embodiment is fixedly arranged in the box body 1 longitudinally, a mounting groove 601 is formed in the fixed base 6, a threaded screw rod 7 is rotatably arranged in the mounting groove 601, the threaded screw rod 7 is driven to rotate by a forward and reverse rotating motor 8 fixedly arranged in the box body 1, a motor shaft of the forward and reverse rotating motor 8 at one end of the threaded screw rod 7 in the embodiment is fixedly connected, the forward and reverse rotating motor 8 is an electric appliance well known to a person skilled in the art, the forward and reverse rotating motor 8 is not repeated, a screw rod sliding block 9 is movably sleeved on the threaded screw rod 7, the forward and reverse rotating motor 8 in the embodiment drives the threaded screw rod 7 to rotate, at the moment, the screw rod sliding block 9 can move along the threaded screw rod 7, a wiping groove 901 is formed in the screw rod sliding block 9, a guide rod 10 is fixedly arranged in the wiping groove 901, the guide rod 10 is movably sleeved with a movable block 11, a first spring 111 is fixedly connected between the movable block 11 and the inner wall of the wiping groove 901, a plurality of wiping strips 12 are arranged at intervals on one side of the movable block 11, which is in movable contact with the scraper 4, two sides of the mounting groove 601 of the fixed base 6 are symmetrically and fixedly provided with extrusion plates 13, the extrusion plates 13 enable the two movable blocks 11 to be mutually close, the wiping strips 12 can extrude and wipe the scraper, the extrusion plates 13 in the embodiment are trapezoid as shown in fig. 5, in the process of moving the screw rod sliding block 9 in the embodiment, the two movable blocks 11 can be driven to move, the scraper 4 firstly enters between the two movable blocks 11 at the moment, then the extrusion plates 13 start to extrude the two movable blocks 11 at the moment, the two movable blocks 11 are mutually close, in the process of mutually closing, the two movable blocks 11 form extrusion states for the scraper 4, and keep, along with the continuous removal of lead screw slider 9, movable block 11 drives and wipes away strip 12 to scraper 4, wipes away the solder paste on the scraper 4, along with the continuous removal of lead screw slider 9, when lead screw slider 9 is about to move to the one end of water storage box 14, squeeze plate 13 no longer extrudees movable block 11 this moment, and movable block 11 separates under the effect of first spring 111 again this moment, makes things convenient for follow-up flushing plate 17 to enter into between two movable blocks 11.

The mounting groove 601 and the wiping groove 901 are all through grooves, the wiping strip 12 is a sponge strip, the tank body 1 is located at the bottom of the mounting groove 601 and is fixedly provided with the collecting box 21, the mounting groove 601 and the wiping groove 901 in the embodiment are arranged to be through grooves, when the subsequent flushing is convenient, flushing waste water can fall into the collecting box 21, cleaning and recycling are convenient, and waste water accumulation in the tank body 1 is prevented.

Embodiment two:

the fixed base 6 is kept away from the fixed water storage tank 14 that is provided with of one side of positive and negative rotation motor 8, the water storage chamber 141 has been seted up to the water storage tank 14 inside, water is supplied through adding water pipe 15 to the water storage chamber 141 inside, the fixed check valve 22 that is provided with of water pipe 15 inside in this embodiment, water in the water storage chamber 141 is annotated by operating personnel, the setting of the inside check valve 22 of water pipe 15, make water only enter into the water storage chamber 141 from water pipe 15, the inside water of water storage chamber 141 can't be discharged through water pipe 15, the inside activity of water storage chamber 141 is provided with the pressure water board 16, the pressure water board 16 in this embodiment and the inner wall of water storage chamber 141 form airtight space, pressure water board 16 and the fixed connection second spring 161 of water storage chamber 141 inner wall, one side that water storage tank 14 is close to mounting groove 601 is fixed is provided with flush plate 17, flush plate 17 activity stretches into between two movable blocks 11, a plurality of apopores 171 have been seted up on the flush plate 17, apopore 171 and cavity 141 intercommunication, make water plate 16 fixedly connected with the squeeze rod 18 that the activity stretches out water storage tank 14, squeeze rod 18 and squeeze rod 9 and water bar 9 are moved down along with the pressure rod 9, the pressure rod 12 is moved along with the pressure rod 9, the pressure rod is washed down, the inner rod is washed down, the water rod is washed down, the activity is washed down, the water rod is washed down, and is washed down and is put down, and is put down.

The inner wall of the box body 1 is fixedly connected with a press-contact switch 19 electrically connected with the forward and reverse rotation motor 8, the press-contact switch 19 is movably contacted with a trigger rod 20 fixedly connected on the track block 3, the forward and reverse rotation motor 8 in the embodiment is connected with the press-contact switch 19 in series through a wire and an external power supply, the forward and reverse rotation motor 8 in the embodiment can be controlled by a PLC controller, the control technology is mature in the field and is also a known technology, and the repeated description is omitted.

Working principle: in the using process of the device, an operator firstly opens the electric telescopic rod 5, the electric telescopic rod 5 drives the track block 3 to move along the track rod 2 with the scraper 4, and the solder paste is scraped;

when the track block 3 moves to the position above the fixed base 6, the electric telescopic rod 5 stops moving under the control of an operator or a built-in chip, meanwhile, the trigger rod 20 presses the press contact switch 19, the forward and reverse rotating motor 8 starts to work to drive the threaded screw rod 7 to rotate, and the screw rod sliding block 9 drives the movable block 11 to move under the action of the rotating threaded screw rod 7;

in the moving process of the screw rod sliding block 9, the scraper 4 firstly enters between the two movable blocks 11, then under the action of the extrusion plate 13, the two movable blocks 11 are mutually close to each other to form an extrusion state for the scraper 4, and in the continuously moving process of the screw rod sliding block 9, the wiping strip 12 wipes the solder paste on the scraper 4;

along with the continuous movement of the screw rod sliding block 9, under the action of the extrusion plate 13, the two movable blocks 11 are separated under the action of the first spring 111, so that the subsequent flushing plate 17 is convenient to enter between the two movable blocks 11;

under the effect of the moving screw rod sliding block 9, the screw rod sliding block 9 extrudes the extrusion rod 18 at the moment to drive the water pressing plate 16 to move, water in the water storage tank 14 is extruded out through the water outlet 171 on the flushing plate 17, the wiping strip 12 on the movable block 11 is flushed, residual solder paste of the wiping strip 12 is flushed, and the next flushing effect is ensured.

Claims (8)

1. A doctor blade device for a solder paste printer, comprising a housing (1), characterized in that: the inner wall of the box body (1) is symmetrically and fixedly provided with a track rod (2), a track block (3) is movably sleeved on the track rod (2), and a scraper (4) is fixedly connected to the bottom of the track block (3);

an electric telescopic rod (5) is fixedly arranged on the inner wall of the box body (1) between the two track rods (2), and one end of the electric telescopic rod (5) is fixedly connected with the track block (3);

one side of the box body (1) far away from the electric telescopic rod (5) is provided with a wiping component for wiping solder paste on the scraper (4).

2. A doctor apparatus for a solder paste printer according to claim 1, wherein: the utility model provides a wiper assembly, including fixed unable adjustment base (6) that sets up inside box (1), mounting groove (601) have been seted up to unable adjustment base (6) inside, inside rotation of mounting groove (601) is provided with screw thread lead screw (7), screw thread lead screw (7) are rotated by fixed positive and negative rotation motor (8) drive that sets up inside box (1), movable sleeve is equipped with lead screw slider (9) on screw thread lead screw (7), set up on lead screw slider (9) and clean groove (901), clean inside fixed guide bar (10) that are provided with of groove (901), movable sleeve is equipped with movable block (11) on guide bar (10), fixedly connected with first spring (111) between movable block (11) and the inner wall of groove (901), movable block (11) and scraper (4) movable contact one side interval are provided with a plurality of wiper strip (12), both sides symmetry that unable adjustment base (6) are located mounting groove (601) is fixed and are provided with stripper plate (13), stripper plate (13) make two movable block (11) are close to each other and make wiper strip (12) to clean.

3. A doctor blade apparatus for a solder paste printer according to claim 2, wherein: the utility model discloses a water storage device, including fixed base (6), water storage cavity (141) have been seted up to fixed being provided with water storage tank (14) in one side that positive and negative rotation motor (8) was kept away from to unable adjustment base (6), water storage tank (14) inside has been seted up water storage cavity (141), water storage cavity (141) inside adds water through water pipe (15), water storage cavity (141) inside activity is provided with pressurized-water board (16), pressurized-water board (16) and water storage cavity (141) inner wall fixedly connected with second spring (161), water storage tank (14) are close to one side of mounting groove (601) fixedly provided with flushing plate (17), flushing plate (17) activity stretches into between two movable blocks (11), a plurality of apopores (171) have been seted up on flushing plate (17), apopore (171) and water storage cavity (141) intercommunication, pressurized-water board (16) fixedly connected with activity stretches out extrusion rod (18) of water storage tank (14), extrusion rod (18) and lead screw slider (9) movable contact.

4. A doctor apparatus for a solder paste printer according to claim 1, wherein: the inner wall of the box body (1) is fixedly connected with a press contact switch (19) electrically connected with the forward and reverse rotating motor (8), and the press contact switch (19) is in movable contact with a trigger rod (20) fixedly connected to the track block (3).

5. A doctor blade apparatus for a solder paste printer according to claim 2, wherein: the mounting groove (601) and the wiping groove (901) are through grooves.

6. A doctor blade apparatus for a solder paste printer according to claim 2, wherein: the wiping strip (12) is a sponge strip.

7. A doctor blade apparatus for a solder paste printer according to claim 2, wherein: the box body (1) is positioned at the bottom of the mounting groove (601) and is fixedly provided with a collecting box (21).

8. A doctor blade apparatus for a solder paste printer according to claim 3, wherein: the inside of the water adding pipe (15) is fixedly provided with a one-way valve (22).