CN114308566B - A spiral material feeding unit in variable clearance for carrying granule glue - Google Patents
A spiral material feeding unit in variable clearance for carrying granule glue Download PDFInfo
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- CN114308566B CN114308566B CN202210263844.XA CN202210263844A CN114308566B CN 114308566 B CN114308566 B CN 114308566B CN 202210263844 A CN202210263844 A CN 202210263844A CN 114308566 B CN114308566 B CN 114308566B
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Abstract
The invention relates to the technical field of fluid conveying devices, in particular to a variable-gap spiral feeding device for conveying granular glue, which comprises a screw, a glue outlet needle head, a motor for driving the screw to rotate, a stator with a cavity and a shell with the cavity, wherein the stator is arranged in the cavity of the shell, the screw is inserted in the cavity of the stator, the output end of the motor is in transmission connection with the input end of the screw, the input end of the glue outlet needle head is communicated with the output end of the cavity of the stator, and a gap for allowing fluid and particles in the fluid to pass through is formed between the screw and the stator.
Description
Technical Field
The invention relates to the technical field of fluid conveying devices, in particular to a variable-gap spiral feeding device for conveying granular glue.
Background
With the rapid development of the electronic industry, the requirements for the electronic packaging technology are more and more demanding, and the fluid dispensing technology, which is one of the core technologies of the electronic packaging, is also faced with the challenge of upgrading with high precision and high efficiency. In the single-component dispensing process, the glue containing particles is more and more widely used, for example: heat-dissipating paste, conductive silver paste, etc.; currently, various means for tapping and stabilizing the flow of such glue into the fixation area have been developed; the pneumatic dispensing device directly discharges gas through pressure, and the device has the problems that the dispensing amount changes along with the influence of the air pressure, so that the precision of the dispensing amount of glue is low, the glue breaking is poor and the problem cannot be solved; the plunger valve which pushes glue by high-speed movement is used, and the device has the problem of glue deterioration caused by crushing particles; the screw pump utilizes a screw rod to extrude glue, and the device solves the problem of high precision requirement, but the glue contains particles due to extrusion conveying, so that the abrasion to a stator and a rotor is serious, and the screw pump cannot be used for a long time. Due to the above problems, it is very desirable to solve the problem of delivering glue containing particles.
Gapless screw rod among the prior art is after glue granule gets into screw rod and stator department, owing to be zero clearance laminating, leads to the glue granule to be crushed, has destroyed the nature of glue, under this kind of condition, produces adverse factor to the encapsulation effect, and the most common is that glue is rotten, leads to the drawing force not enough, and this kind of problem is the important problem that has not been solved on the market at present.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to overcome among the prior art zero clearance screw rod after the glue granule gets into screw rod and stator department, because be zero clearance laminating, lead to the glue granule to be crushed, destroyed the nature of glue, under this condition, produce adverse factor to the encapsulation effect, the most general is that glue is rotten, leads to the problem that the drawing force is not enough, provide a spiral material feeding unit in variable clearance for carrying granule glue.
The technical scheme adopted by the invention for solving the technical problems is as follows: a variable-gap spiral feeding device for conveying granular glue comprises a screw, a glue outlet needle head, a motor used for driving the screw to rotate, a stator with a cavity and a shell with the cavity, wherein the stator is arranged in the cavity of the shell, the screw is inserted in the cavity of the stator, the output end of the motor is in transmission connection with the input end of the screw, the input end of the glue outlet needle head is communicated with the output end of the cavity of the stator, a gap for allowing fluid and particles in the fluid to pass through is formed between the screw and the stator, the device utilizes a spiral conveying mode, and solves the problems of low conveying precision and high speed of abrasion accessories of the granular glue and the restriction problem of the granular glue existing at present through the principle of the gap screw; meanwhile, the gap between the screw and the stator is adjustable, so that the variable-gap spiral feeding device is used for conveying glue containing particles with different diameters.
In order to solve when the stator position changes the back, the size of clearance can't follow the removal of stator and the problem that changes, further include the screw thread section of screw rod is the taper structure, the cavity of stator is the toper chamber, and the cavity of screw rod and stator is the taper structure for after the stator position removed, the clearance between stator and the screw rod can change.
In order to solve the problem that the gap distances between the stators and the screws at different positions are different when the tapers are different, the taper of the thread section of the screw is equal to the taper of the cavity of the stator, so that the gap distances between the stators and the screws at all positions are equal.
In order to solve the problem of how to realize the movement of the stator by using a simple structure, the feeding device further comprises an adjustable connection between the stator and the shell, and an adjusting assembly for driving the stator to move axially, wherein the adjusting assembly comprises an adjusting knob and an adjusting stud, a holding part of the adjusting knob is positioned on the outer side of the shell, a rod part of the adjusting knob is in transmission connection with the adjusting stud, the adjusting stud is in rotation connection with the shell, the adjusting stud is in transmission connection with the stator, and the axial movement of the stator is realized by the matching of the adjusting knob and the adjusting stud.
In order to solve the problem that the stator is easy to follow the circumferential rotation of the adjusting screw rod, the stator and the shell are connected through a flat key, the flat key extends along the axial direction of the stator, and the circumferential rotation of the stator is limited through the flat key, so that the stator can only move axially.
In order to solve the problem of inconsistent gap size between the screw and the stator, the method further comprises the step of coaxially arranging the screw and the stator so that the gap between the screw and the stator is the same.
In order to solve the problem that fluid is inconvenient to enter the cavity of the stator, the feeding device further comprises a rubber inlet pipe, and the output end of the rubber inlet pipe is communicated with the input end of the cavity of the stator.
The invention has the beneficial effects that: according to the variable-gap spiral feeding device for conveying granular glue, the problems of low conveying precision and high speed of worn parts of granular glue are solved by utilizing a spiral conveying mode and a gap screw principle, and the problem of restriction of the granular glue at present is solved; meanwhile, the gap between the screw and the stator is adjustable, so that the variable-gap spiral feeding device is used for conveying glue containing particles with different diameters.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a rear view of the present invention;
FIG. 3 is a schematic cross-sectional view taken at A-A of FIG. 2 in accordance with the present invention;
FIG. 4 is an enlarged schematic view of the invention at B in FIG. 3;
FIG. 5 is a schematic view of the structure at the adjustment assembly of the present invention;
fig. 6 is a schematic view of the screw stator fit at the gap of the present invention.
In the figure: 1. the device comprises a screw, 2, a glue outlet needle head, 3, a motor, 4, a stator, 5, a shell, 6, an adjusting component, 61, an adjusting knob, 62, an adjusting stud, 7, a glue inlet pipe, 8 and a gap.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
Fig. 1 is a schematic structural diagram of the present invention, and a variable gap screw type feeding device for conveying granular glue comprises a screw 1, a glue outlet needle 2, a motor 3 for driving the screw 1 to rotate, a stator 4 with a cavity and a housing 5 with a cavity, the stator 4 is arranged in the cavity of the shell 5, the screw rod 1 is inserted in the cavity of the stator 4, the output end of the motor 3 is in transmission connection with the input end of the screw rod 1, as shown in fig. 2, the input end of the glue outlet needle 2 is communicated with the output end of the cavity of the stator 4, between the screw 1 and the stator 4 there is a gap 8 for the passage of the fluid and the particles in the fluid, which device utilizes a screw conveying manner, by adopting the principle of the gap screw, the problems of low conveying precision and high accessory abrasion speed of glue with particles are solved, and the restrictive problem of the glue with particles at present is solved; meanwhile, the gap 8 between the screw rod 1 and the stator 4 is adjustable, so that the variable-gap spiral feeding device can be used for conveying glue containing particles with different diameters.
As shown in fig. 3 and 4, the thread section of the screw rod 1 is a conical structure, the cavity of the stator 4 is a conical cavity, and the cavities of the screw rod 1 and the stator 4 are both conical structures, so that the gap 8 between the stator 4 and the screw rod 1 can be changed after the position of the stator 4 is moved.
As shown in fig. 3 and 4, the taper of the thread section of the screw 1 is equal to the taper of the cavity of the stator 4, so that the gaps 8 between the stator 4 and the screw 1 are equal, the precision is high, and the efficiency is high; the problem of serious accessory loss caused by granular glue is solved; a suitable glue can be adapted by adjusting the size of the gap 8 between the screw 1 and the stator 4.
As shown in fig. 3, fig. 4, and fig. 5, the stator 4 is adjustably connected to the housing 5, the feeding device further includes an adjusting assembly 6 for driving the stator 4 to move axially, the adjusting assembly 6 includes an adjusting knob 61 and an adjusting stud 62, a holding portion of the adjusting knob 61 is located outside the housing 5, a rod portion of the adjusting knob 61 is in transmission connection with the adjusting stud 62, the adjusting stud 62 is in rotational connection with the housing 5, the adjusting stud 62 is in transmission connection with the stator 4, the adjusting assembly 6 further includes two mutually engaged bevel gears, one bevel gear is sleeved on the adjusting knob 61, and the other bevel gear is sleeved on the adjusting stud 62.
The stator 4 and the housing 5 are connected by a flat key, the flat key extends along the axial direction of the stator 4, and the circumferential rotation of the stator 4 is limited by the flat key, so that the stator 4 can only move axially.
As shown in fig. 3, 4, and 5, the screw 1 and the stator 4 are coaxially arranged such that the gap between the screw 1 and the stator 4 is the same.
As shown in fig. 1 and 3, the feeding device further comprises a rubber inlet pipe 7, and an output end of the rubber inlet pipe 7 is communicated with an input end of the cavity of the stator 4.
The screw 1 with the taper is driven by the motor 3 through the coupler and the connecting shaft to rotate, fluid with particles enters from the glue inlet, and the fluid with the particles precisely flows downwards under the matching of the screw 1 with the taper and the stator 4, and because the gap 8 is arranged between the screw 1 and the stator 4, the friction between the screw and the glue is very small, and the abrasion of the gap screw is very little.
The fluid with particles passing through the gap 8 between the tapered screw 1 and the metal stator 4 flows out through the flow channel and the glue outlet needle 2.
As shown in fig. 6, the adjustment of the gap between the tapered screw 1 and the stator 4 is realized by the up-and-down movement of the stator 4; the specific implementation mode is as follows: the adjusting stud 62 is meshed with the stator 4 through threads, the circumferential movement of the stator 4 is limited by a flat key, the adjusting knob 61 is screwed, the adjusting stud 62 rotates under the transmission of the bevel gear set, and the stator 4 moves up and down along with the rotation; because the stator 4 and the screw rod 1 both have certain conicity, the gap 8 changes after the stator and the screw rod are staggered up and down; in the initial position, the gap 8 between the screw 1 and the stator 4 is 0, the conicity of the screw 1 and the taper of the stator 4 are theta, the adjustment height of the stator 4 is h, and the gap 8 is e, so that the following relations exist:
in light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (5)
1. A variable-gap spiral feeding device for conveying granular glue is characterized by comprising a screw (1), a glue outlet needle head (2), a motor (3) for driving the screw (1) to rotate, a stator (4) with a cavity and a shell (5) with a cavity, wherein the stator (4) is arranged in the cavity of the shell (5), the screw (1) is inserted into the cavity of the stator (4), the output end of the motor (3) is in transmission connection with the input end of the screw (1), the input end of the glue outlet needle head (2) is communicated with the output end of the cavity of the stator (4), and a gap (8) for allowing fluid and particles in the fluid to pass through is formed between the screw (1) and the stator (4);
the thread section of the screw rod (1) is of a conical structure, and the cavity of the stator (4) is a conical cavity;
the feeding device comprises a stator (4), a shell (5), an adjusting assembly (6) and an adjusting stud (62), wherein the stator (4) is in adjustable connection with the shell (5), the adjusting assembly (6) is used for driving the stator (4) to move axially, the adjusting assembly (6) comprises an adjusting knob (61) and an adjusting stud (62), a holding part of the adjusting knob (61) is located on the outer side of the shell (5), a rod part of the adjusting knob (61) is in transmission connection with the adjusting stud (62), the adjusting stud (62) is in rotation connection with the shell (5), and the adjusting stud (62) is in transmission connection with the stator (4).
2. A variable gap screw feeder for particulate glue as claimed in claim 1, wherein: the taper of the thread section of the screw (1) is equal to the taper of the cavity of the stator (4).
3. A variable gap screw feeder for particulate glue as claimed in claim 1, wherein: the stator (4) and the shell (5) are connected through a flat key, and the flat key extends along the axial direction of the stator (4).
4. A variable gap screw feeder for particulate glue as claimed in claim 1, wherein: the screw (1) and the stator (4) are coaxially arranged.
5. A variable gap screw feeder for particulate glue as claimed in claim 1, wherein: the feeding device further comprises a rubber inlet pipe (7), and the output end of the rubber inlet pipe (7) is communicated with the input end of the cavity of the stator (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210263844.XA CN114308566B (en) | 2022-03-17 | 2022-03-17 | A spiral material feeding unit in variable clearance for carrying granule glue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210263844.XA CN114308566B (en) | 2022-03-17 | 2022-03-17 | A spiral material feeding unit in variable clearance for carrying granule glue |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114308566A CN114308566A (en) | 2022-04-12 |
| CN114308566B true CN114308566B (en) | 2022-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210263844.XA Active CN114308566B (en) | 2022-03-17 | 2022-03-17 | A spiral material feeding unit in variable clearance for carrying granule glue |
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| CN (1) | CN114308566B (en) |
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| CN114308566A (en) | 2022-04-12 |
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