阅读说明：本技术 一种单液螺杆阀 (Single-liquid screw valve ) 是由 卢国明 张涛 卢国艺 陈文雄 江岱平 郭江 于 2020-10-26 设计创作，主要内容包括：本发明公开了一种单液螺杆阀,包括壳体、阀体上组件、阀体组件、胶桶、固定件以及输胶组件。所述壳体设置于所述阀体上组件上,所述阀体上组件的底部与所述阀体组件连接,所述胶桶通过所述固定件固定于所述壳体的一侧。本发明采用以上结构,使得本发明螺杆阀拆装、清洗时的零件数量最小化,拆装方便快捷,人机效能高。(The invention discloses a single-liquid screw valve which comprises a shell, an upper valve body assembly, a glue barrel, a fixing piece and a glue conveying assembly. The casing set up in on the valve body subassembly, the bottom of subassembly on the valve body with the valve body subassembly is connected, glue the bucket and pass through the mounting is fixed in one side of casing. By adopting the structure, the screw valve has the advantages of minimized number of parts during disassembly, assembly and cleaning, convenient and quick disassembly and high man-machine efficiency.)

1. A single-fluid screw valve characterized by: comprises a shell (1), a valve body upper component (2), a valve body component (3), a glue barrel (4), a fixing component (5) and a glue conveying component (6);

the shell (1) is arranged on the valve body upper assembly (2), the bottom of the valve body upper assembly (2) is connected with the valve body assembly (3), and the glue barrel (4) is fixed on one side of the shell (1) through the fixing piece (5);

the glue barrel (4) is connected with the valve body assembly (3) through the glue conveying assembly (6);

the valve body upper assembly (2) comprises a fixed seat (9) and a screw rod assembly (10), the screw rod assembly (10) is rotatably connected to the fixed seat (9), the fixed seat (9) is provided with a first positioning groove (41), and the lower end of the fixed seat (9) is provided with a first combination thread;

the screw assembly (10) comprises a screw (15), a bearing pressing ring (16) and a plurality of bearings (17), the bearing pressing ring (16) and the plurality of bearings (17) are sleeved on the screw (15), and the screw (15) is in interference fit with the bearing pressing ring (16) to fix the position of the bearings (17);

the valve body component (3) comprises a valve body (11), a pin (19), a left-right screw nut (18),

Screw rod groove (43) and second constant head tank (42) have been seted up on valve body (11), the upper end of valve body (11) is provided with second combination screw thread, first combination screw thread with second combination screw thread is opposite, it sets up opposite screw thread to control nut (18) upper portion and lower part, control nut (18) respectively with pass through first combination screw thread with fixing base (9) are connected, pass through second combination screw thread with valve body (11) are connected, pin (19) set up in first constant head tank (41) with in the second constant head tank (42), screw rod (15) insert in screw rod groove (43), bearing (17) with screw rod groove (43) interference fit.

2. A single fluid screw valve according to claim 1, wherein:

the valve body upper assembly (2) further comprises a motor (7) and a coupler (8), wherein the coupler (8) is connected with a power output shaft of the motor (7) and the screw (15) respectively so as to drive the screw (15) to rotate.

3. A single fluid screw valve according to claim 1, wherein:

the valve body assembly (3) further comprises a needle seat (13) and a needle (14);

the needle seat (13) is fixed at the bottom of the valve body (11), the needle (14) is screwed at the bottom of the needle seat (13), and the screw rod (15) penetrates through the screw rod groove (43) and extends to the needle seat (13); a glue injection channel (61) is formed in the side wall of the valve body (11), and the glue injection channel (61) extends to the screw (15).

4. A single fluid screw valve according to claim 1, wherein:

the screw thread of the screw (15) adopts Archimedes screw thread.

5. A single fluid screw valve according to claim 1, wherein:

the valve body assembly (3) further comprises a sealing ring (12), the sealing ring (12) is arranged at the bottom of the screw rod groove (43), the screw rod (15) penetrates through the sealing ring (12), and the bearing (17) abuts against the sealing ring (12).

6. A single fluid screw valve according to claim 1, wherein:

also comprises a glue dispensing box (21), a moving part, a drying part and a conveying part,

casing (1) through the moving member connect in the inner wall of point gum box (21), conveying component includes conveyer belt (22), entry (23) and export (24) have been seted up to the bottom of point gum box (21), conveying component includes conveyer belt (22), conveyer belt (22) pass entry (23) with export (24), dry component includes support, electric heat stick (34) and fan (33), electric heat stick (34) are fixed in through the support the interior roof of point gum box (21), fan (33) set up in the top of electric heat stick (34).

7. A single fluid screw valve according to claim 6, wherein:

the moving member includes first slide rail (31) and second slide rail (32), first slide rail (31) is vertical to be fixed in point gum box (21) inner wall, second slide rail (32) with first slide rail (31) set up perpendicularly, just second slide rail (32) sliding connection in on first slide rail (31), casing (1) sliding connection in on second slide rail (32).

8. A single fluid screw valve according to claim 7, wherein:

also comprises a dust collector (39) and a dust adhering piece;

the dust collector (39) is fixed outside the glue dispensing box (21), and the dust collector (39) is positioned above the inlet (23);

the sticky dust piece includes roof (35), spring (36), slider (38) and is stained with roller (37), first slide rail (31) are located entry (23) top, roof (35) are fixed in the upper end of first slide rail (31), slider (38) sliding connection in on first slide rail (31), spring (36) respectively with roof (35) slider (38) fixed connection, be stained with roller (37) rotate connect in on slider (38).

9. A single fluid screw valve according to claim 6, wherein:

an air curtain (30) is arranged above the outlet (24).

Technical Field

The invention relates to the field of screw valve devices, in particular to a single-liquid screw valve.

Background

During the electronic manufacturing process, a dispenser is required to apply glue, paint or other liquid on the surface of or inside the product. The dispensing process requires a single-fluid screw valve to squeeze the glue into droplets to be dispensed onto the device. However, the existing screw valve has a complex structure, a large number of parts and is very troublesome to disassemble and assemble. The complicated structure like this also can lead to screw rod, the stator location of screw valve simultaneously inaccurate, and the eccentric phenomenon appears easily in the during operation, leads to the screw rod to rotate the increase of runout, aggravates the rotatory wearing and tearing between screw rod and the stator.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a single-liquid screw valve which is simple in structure, small in part number, simple to assemble and disassemble, capable of eliminating back clearance of screw operation and capable of improving the precision of the screw valve.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a single-liquid screw valve which comprises a shell, an upper valve body assembly, a glue barrel, a fixing piece and a glue conveying assembly. The casing set up in on the valve body subassembly, the bottom of subassembly on the valve body with the valve body subassembly is connected, glue the bucket and pass through the mounting is fixed in one side of casing. The glue barrel is connected with the valve body assembly through the glue conveying assembly. The valve body upper assembly comprises a fixed seat and a screw rod assembly, the screw rod assembly is rotatably connected onto the fixed seat, a first positioning groove is formed in the fixed seat, and a first combining thread is arranged at the lower end of the fixed seat. The screw rod assembly comprises a screw rod, a bearing pressing ring and a plurality of bearings, the bearing pressing ring and the bearings are all sleeved on the screw rod, and the screw rod is in interference fit with the bearing pressing ring to fix the position of the bearings. The valve body assembly comprises a valve body, a pin and a left-right screw nut. Screw rod groove and second constant head tank have been seted up on the valve body, the upper end of valve body is provided with second combination screw thread, first combination screw thread with second combination screw thread is opposite, control nut upper portion and lower part set up opposite screw thread, control the nut respectively with pass through first combination screw thread with the fixing base is connected, is passed through second combination screw thread with this body coupling of valve body, the pin set up in first constant head tank with in the second constant head tank, the screw rod inserts the screw rod inslot, the bearing with screw rod groove interference fit.

In a preferred technical scheme of the invention, the valve body upper assembly further comprises a motor and a coupler, and the coupler is respectively connected with a power output shaft of the motor and the screw rod so as to drive the screw rod to rotate.

In a preferred technical scheme of the invention, the valve body assembly further comprises a needle seat and a needle. The needle seat is fixed at the bottom of the valve body, the needle is screwed at the bottom of the needle seat, and the screw penetrates through the screw groove and extends to the needle seat. The lateral wall of the valve body is provided with a glue injection channel, and the glue injection channel extends to the screw.

In a preferred technical scheme of the invention, the screw thread of the screw adopts Archimedes screw thread.

In a preferred technical scheme of the invention, the valve body assembly further comprises a sealing ring, the sealing ring is arranged at the bottom of the screw rod groove, the screw rod penetrates through the sealing ring, and the bearing abuts against the sealing ring.

In a preferred technical scheme of the invention, the single-fluid screw valve further comprises a dispensing box, a moving member, a drying component and a conveying component, the shell is connected to the inner wall of the dispensing box through the moving member, the conveying component comprises a conveying belt, the bottom of the dispensing box is provided with an inlet and an outlet, the conveying component comprises a conveying belt, the conveying belt penetrates through the inlet and the outlet, the drying component comprises a support, an electric heating rod and a fan, the electric heating rod is fixed to the inner top wall of the dispensing box through the support, and the fan is arranged above the electric heating rod.

In a preferred technical scheme of the present invention, the moving member includes a first slide rail and a second slide rail, the first slide rail is vertically fixed on the inner wall of the dispensing box, the second slide rail is perpendicular to the first slide rail, the second slide rail is slidably connected to the first slide rail, and the housing is slidably connected to the second slide rail.

In a preferred technical scheme of the invention, the single-liquid screw valve further comprises a dust collector and a dust adhering piece. The dust collector is fixed outside the glue dispensing box and is positioned above the inlet. The sticky dust piece includes roof, spring, slider and is stained with the roller, first slide rail is located the entry top, the roof is fixed in the upper end of first slide rail, slider sliding connection in on the first slide rail, the spring respectively with the roof slider fixed connection, be stained with the roller rotate connect in on the slider.

In a preferred technical scheme of the invention, an air curtain is arranged above the outlet.

The invention has the beneficial effects that:

1. according to the single-fluid screw valve provided by the invention, the screw, the bearing and the bearing pressing ring are designed into an integrated structure, and the screw, the bearing and the bearing pressing ring are equal to one part after the first assembly is completed, so that the number of parts is minimized when the screw valve is disassembled, assembled and cleaned, and the man-machine efficiency is high.

2. The screw rod adopts an Archimedes screw groove with an arc-shaped cross section, so that the cleaning dead angle is avoided, and the cleaning is convenient when the glue is replaced.

3. The power transmission of the single-fluid screw valve is only provided with one middle part from the motor to the screw, so that zero backlash of the screw operation can be realized, the response of the rotation start and stop of the screw is rapid and flexible, the screw and the motor are conveniently disassembled, cleaned and replaced while the control is accurate;

4. the drying component that sets up in the case is glued to the point can make the glue flash drying of point gum machine point play, and glue flash drying can make things convenient for equipment to carry out processing or packing on next step, improves the efficiency of production.

Drawings

FIG. 1 is a schematic diagram of a single fluid screw valve according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a valve body assembly of a single fluid screw valve according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a screw assembly of a single fluid screw valve according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of the structure of the upper assembly of the valve body of the single-fluid screw valve according to the embodiment of the present invention;

FIG. 5 is a schematic structural view of the connection between the upper valve body assembly and the valve body assembly of the single-fluid screw valve according to the embodiment of the present invention;

FIG. 6 is a schematic view of a connection structure of left and right nuts of a single-fluid screw valve according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a dispenser box in a single fluid screw valve according to an embodiment of the present invention.

In the figure:

1. the device comprises a shell, 2, a valve body upper assembly, 3, a valve body assembly, 4, a glue barrel, 5, a fixing piece, 6, a glue conveying assembly, 10, a screw rod assembly, 11, a valve body, 12, a sealing ring, 13, a needle head seat, 14, a needle head, 15, a screw rod, 16, a bearing press ring, 17, a bearing, 18, a left screw nut, a right screw nut, 19, a pin, 7, a motor, 8, a coupler, 9, a fixing seat, 41, a first positioning groove, 42, a second positioning groove, 43, a screw rod groove, 61, a glue injection channel, 21, a glue dispensing box, 22, a conveying belt, 23, an inlet, 24, an outlet, 31, a first sliding rail, 32, a second sliding rail, 33, a fan, 34, an electric heating rod, 35, a top plate, 36, a spring, 37, a dipping roller, 38, a sliding block, 39, a dust.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

As shown in fig. 1-7, the embodiment provides a single-fluid screw valve, which comprises a housing 1, an upper valve body assembly 2, a valve body assembly 3, a glue barrel 4, a fixing member 5 and a glue conveying assembly 6. Casing 1 sets up on subassembly 2 on the valve body, and the bottom of subassembly 2 is connected with valve body subassembly 3 on the valve body, glues bucket 4 and is fixed in one side of casing 1 through mounting 5. The glue barrel 4 is connected with the valve body assembly 3 through the glue conveying assembly 6. The valve body upper assembly 2 comprises a fixed seat 9 and a screw rod assembly 10, the screw rod assembly 10 is rotatably connected onto the fixed seat 9, a first positioning groove 41 is formed in the fixed seat 9, and a first combining thread is arranged at the lower end of the fixed seat 9. The screw assembly 10 comprises a screw 15, a bearing press ring 16 and a plurality of bearings 17, the bearing press ring 16 and the plurality of bearings 17 are all sleeved on the screw 15, and the screw 15 and the bearing press ring 16 are in interference fit to fix the positions of the bearings 17. The valve body assembly 3 includes a valve body 11, a pin 19, and a left-right turn nut 18. Screw rod groove 43 and second constant head tank 42 have been seted up on valve body 11, the upper end of valve body 11 is provided with second combination screw thread, first combination screw thread is opposite with second combination screw thread, control 18 upper portions of screw nut and lower part set up opposite screw thread, control screw nut 18 respectively with be connected with fixing base 9 through first combination screw thread, be connected with valve body 11 through second combination screw thread, pin 19 sets up in first constant head tank 41 and second constant head tank 42, screw rod 15 inserts in screw rod groove 43, bearing 17 and screw rod groove 43 interference fit.

Glue for dispensing and dripping glue is contained in the glue barrel 4, and the glue barrel 4 conveys the glue to the valve body assembly 3 through the glue conveying assembly 6. The glue conveying component 6 in this embodiment is a pipeline. When the upper valve body assembly 2 is connected with the valve body assembly 3, one end of a pin 19 is inserted into a first positioning groove 41 of a fixed seat 9, the upper half part of a left-right screw nut 18 is screwed on a first combined thread of the fixed seat 9, the lower end of the left-right screw nut 18 is screwed and matched with a second combined thread at the upper end of a valve body 11, the pin 19 can be inserted into a second positioning groove 42 at the moment, the second positioning groove 42 is a circular groove, when the valve body 11 is screwed with the left-right screw nut 18, the pin 19 can rotate in the second positioning groove 42, when the valve body 11 is screwed to the left-right screw nut 18, the pin 19 completely pushes the first positioning groove 41 and the second positioning groove 42, and the upper valve body assembly 2 and the valve body assembly 3 are installed together through the matching of the pin 19 and the two positioning grooves and the fixing of the left-right screw nut 18. The fixation of the pin 19 reduces the radial movement between the two, increasing stability.

In this embodiment, the three bearings 17 are pressed tightly on the screw rod 15 by the bearing pressing ring 16, when the valve body upper assembly 2 and the valve body assembly 3 are installed, the lower end of the screw rod 15 extends into the screw rod groove 43, the uppermost bearing 17 of the screw rod 15 is sleeved with the fixed seat 9, after the screw rod groove 43 is inserted, the screw rod groove 43 is also sleeved with the uppermost bearing 17, the bearing 17 at the lower end of the screw rod 15 is rotatably connected with the wall of the screw rod groove 43, the bearing 17 is in interference fit with the wall of the screw rod groove 43 and the fixed seat 9, so that the screw rod 15 can fix the axial position between the valve body upper assembly 2 and the valve body assembly 3, reduce the radial run-out in the working process, and avoid the generation of eccentric motion. The service life of the device is prolonged.

Glue is conveyed to the valve body 11 through a pipeline, and is extruded through the rotation of the screw rod 15, so that glue dripping and dispensing are realized. When this needs are dismantled, only need with fixing base 9 and valve body 11 respectively from about the screw nut 18 spin out can, dismantle process convenient and fast to whole part is few, consequently dismantle the back part and be difficult for losing, the degree of difficulty of assembling again is also less. The use difficulty is improved.

In an embodiment of the present invention, the valve body upper assembly 2 further includes a motor 7 and a coupling 8, and the coupling 8 is respectively connected to a power output shaft of the motor 7 and the screw 15 to drive the screw 15 to rotate. The shaft coupling 8 passes through the screw respectively with motor 7, 15 zonulae occludens of screw rod, and motor 7 passes through shaft coupling 8 and transmits power to screw rod 15, drives screw rod 15 and rotates in order to realize defeated glue.

In one embodiment of the present invention, the valve body assembly 3 further comprises a needle seat 13 and a needle 14. The needle seat 13 is fixed at the bottom of the valve body 11, the needle 14 is screwed at the bottom of the needle seat 13, and the screw 15 penetrates the screw groove 43 and extends to the needle seat 13. The side wall of the valve body 11 is provided with a glue injection channel 61, and the glue injection channel 61 extends to the screw 15. The screw 15 is directly communicated with the needle seat 13, the glue conveying component conveys glue to the glue injection channel 61, the glue is extruded to the needle 14 through the rotation of the screw 15, and the glue is dripped to a workpiece through the needle 14. The needle 14 and the needle seat 13 are connected by screw thread, and can be unscrewed in disassembly, which is very convenient.

In one embodiment of the invention, the screw 15 is provided with archimedes threads. The screw 15 screw thread adopts archimedes screw thread to be equipped with arc tooth form, when using the back cleanness, clears up screw 15 easily.

In one embodiment of the present invention, the valve body assembly 3 further includes a sealing ring 12, the sealing ring 12 is disposed at the bottom of the screw groove 43, the screw 15 penetrates through the sealing ring 12, and the bearing 17 abuts against the sealing ring 12. The sealing ring 12 seals the screw groove 43 to prevent the glue from escaping upwards.

In an embodiment of the present invention, the single-fluid screw valve further includes a dispensing box 21, a moving member, a drying member, and a conveying member, the housing 1 is connected to an inner wall of the dispensing box 21 by the moving member, the conveying member includes a conveyor belt 22, the bottom of the dispensing box 21 is provided with an inlet 23 and an outlet 24, the conveying member includes the conveyor belt 22, the conveyor belt 22 passes through the inlet 23 and the outlet 24, the drying member includes a support, an electric heating rod 34, and a blower 33, the electric heating rod 34 is fixed to an inner top wall of the dispensing box 21 by the support, and the blower 33 is disposed above the electric heating rod 34. The workpiece to be subjected to dispensing is placed on the conveyor belt 22, the conveyor belt 22 carries the workpiece to enter the dispensing box 21, and the valve body assembly 3 is moved by the moving means to dispense the valve body assembly 3 on the workpiece. After dispensing, the conveyor 22 continues to move with the workpiece to below the drying section. The fan 33 and the electric bar 34 are simultaneously started. The electric bar 34 is electrified to generate heat, the heat is radiated to the workpiece, the fan 33 blows air to the workpiece, and the blown air is heated by the electric bar 34 to become hot air. Hot air is blown to the workpiece to accelerate the drying of the glue. Glue rapid draing makes subsequent processing or packing, has avoided not dry glue to be touched by the mistake in the processing packaging process, and then influences the some glue effect.

In an embodiment of the present invention, the moving member includes a first sliding rail 31 and a second sliding rail 32, the first sliding rail 31 is vertically fixed on an inner wall of the dispensing box 21, the second sliding rail 32 is perpendicular to the first sliding rail 31, the second sliding rail 32 is slidably connected to the first sliding rail 31, and the housing 1 is slidably connected to the second sliding rail 32. The second slide rail 32 drives the valve body assembly 3 to move up and down on the first slide rail 31, so that the adjustment in the vertical direction is realized, the valve body assembly 3 slides on the second slide rail 32, the adjustment in the longitudinal direction is realized, the conveying belt 22 is matched to drive the workpiece to move left and right, the transverse movement of the workpiece is realized, and the three movements are matched, so that the screw valve can perform glue dispensing and glue dripping on each position on the plane of the workpiece.

In one embodiment of the present invention, the single-fluid screw valve further includes a dust collector 39 and a dust adhering member. A dust collector 39 is fixed to the outside of the dispensing box 21, and the dust collector 39 is located above the inlet 23. The dust adhering part comprises a top plate 35, a spring 36, a sliding block 38 and a dipping roller 37, the first sliding rail 31 is positioned above the inlet 23, the top plate 35 is fixed at the upper end of the first sliding rail 31, the sliding block 38 is slidably connected onto the first sliding rail 31, the spring 36 is respectively fixedly connected with the top plate 35 and the sliding block 38, and the dipping roller 37 is rotatably connected onto the sliding block 38. When the workpiece passes through the inlet 23, the dust collector 39 first starts to collect dust. Sucking away the dust adhered to the surface of the workpiece. After passing through the dust collector 39, the workpiece passes through the dust adhering member. The slider 38 pushes the dipping roller 37 to the workpiece of the conveyor belt 22 under the action of the spring 36, and the dipping roller 37 rotates along with the sliding workpiece of the workpiece, so that dust which is not sucked away from the surface of the workpiece is stuck away, the dust residue on the surface of the dust is reduced, and poor dispensing effect caused by the influence of the dust when the workpiece is subjected to dispensing and glue dripping is avoided.

In one embodiment of the invention, an air curtain 30 is provided above the outlet 24. The air curtain 30 on the outlet 24 sprays air to the outlet 24, the formed air curtain 30 cloth can prevent dust from entering the dispensing box 21, the influence of the dust on the dispensing quality is reduced, the dispensing efficiency is improved, and meanwhile, the air curtain 30 can not influence the workpiece from the output dispensing box 21.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.