CN208449774U - A kind of automatic glue injection apparatus - Google Patents
A kind of automatic glue injection apparatus Download PDFInfo
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- CN208449774U CN208449774U CN201820121661.3U CN201820121661U CN208449774U CN 208449774 U CN208449774 U CN 208449774U CN 201820121661 U CN201820121661 U CN 201820121661U CN 208449774 U CN208449774 U CN 208449774U
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Abstract
The utility model provides a kind of automatic glue injection apparatus, comprising: at least one glue tank, at least one pumping installations, mobile mechanism, mixing head, workbench, control device, pressure apparatus and cleaning device；Glue injection channel is provided in mixing head；Each pumping installations connects a glue tank and mixing head；Cleaning device is connected to glue injection channel, and cleaning device has intake section and water entering section, so that air-flow sweeps along water to clean glue injection channel；Moreover, intake section includes air accumulator, and the pressurized cylinder being connected to air accumulator；Pressure apparatus is connected to the upper end of glue injection channel, opens under control of the control means when cleaning device cleans mixing head, and the upper end of glue injection channel is made to form positive pressure.When mixing head can be made to clean, the high volatile solvent such as methylene chloride is not used, but washes with water mixing head, it is pollution-free；And gas source is stablized, and flushing pressure can be improved, guarantee the stability of flushing pressure.
Description
Technical field
The utility model relates to injecting glue technical field, especially a kind of automatic glue injection apparatus.
Background technique
Automatic glue injection apparatus is specially to control fluid, and by liquid dropping, coating, encapsulating in product surface or production
Automatic machinery inside product, the equipment for the effects of reaching sealing, fixation, waterproof, what is generally used is mostly two component
Water.Glue, the bonding of oil and other liquid, perfusion, the coating, sealing, filling being mainly used in Product Process, automation is certainly
Dynamic glue filling device can be realized the encapsulating of the irregular figures such as point, line, arc, circle.For existing automatic glue injection apparatus, inventor
It was found that automatic glue injection apparatus in the prior art, during the work time or after injecting glue, glue is easy to flow backwards, especially infusing
During glue, glue is flow backwards suddenly, then mixing head also in movement in, cause the note on product to be processed at certain positions
Requirement is not achieved in glue amount, significantly affects the quality of object to be processed；Also automatic glue injection apparatus equipment of itself can be caused
Damage.And in some cases, even if glue is not flow backwards, adhesive liquid quantity can also exist not enough at certain positions on product to be processed
The case where, affect the quality of product to be processed.Inventor also found that mixing head in the prior art is after stopping injecting glue, meeting
There is a certain amount of glue to continue to drip, results in waste of resources.It may be provided with agitating device in current mixing head, and drive stirring
The driving mechanism that device is rotated is generally positioned at the outside of mixing head, need to be inserted into drive in mixing head by a shaft and stir
Device rotation, in mixing chamber glue can be flowed to by the gap between shaft and the wall of rotary shaft through hole mixing head other positions or
It is flowed out from mixing head top, glue when injecting glue is caused the generations of bad phenomenons such as to flow back in mixing head.Particularly, inventor is again
It was found that conventional to use methylene chloride, a kind of high volatile solvent of methylene chloride has pollution when glue-injection machine mixing head cleans.And
And existing glue-injection machine mixing head, in cleaning, when flow of dichloromethane solvent, is small when big, flow is unstable, and flow velocity is inadequate, injecting glue
After the cleaning of machine mixing head, internal remaining has impurity, causes cleaning not clean enough.
Utility model content
The utility model is intended to overcome at least one defect of existing automatic glue injection apparatus, provides a kind of novel automatic note
Adhesive dispenser can be adopted and be washed with water without using solvent slop when mixing head cleans, and can make to rinse velocity-stabilization, rinse
Efficiently, the substantially not residual impurity of the mixing head after cleaning, damages mixing head prevented also from high pressure water flow.
Further, the automatic glue injection apparatus of the utility model can prevent the glue after stopping injecting glue from continuing to drip, and prevent
Mixed glue can be broken through in the converse upper cavity to mixing head of reinforced seal, when protecting mixing head, and can prevent injecting glue
The generation of the bad phenomenons such as reflux of glue in mixing head.
Further, the automatic glue injection apparatus of the utility model can glue flows back during injecting glue or glue flow velocity is unstable
Periodically, the motor for quickly turning off pumping glue such as makes automatic glue injection apparatus stop working, and can protect motor at the automatic injecting glue
The component of device.
In order to realize at least one above-mentioned purpose, the utility model provides a kind of automatic glue injection apparatus comprising: it is used for
Hold at least one glue tank, at least one pumping installations, mobile mechanism, mixing head, workbench, the control device, pressure of glue
Power device and cleaning device；
Glue injection channel is provided in the mixing head, and the mixing head is installed on the mobile mechanism, in the shifting
It is moved under the drive of motivation structure according to desired guiding trajectory；
Each pumping installations connects a glue tank and the mixing head, by the glue in a glue tank
It is delivered to the mixing head, to carry out injecting glue to the object being placed on the workbench；
The cleaning device is connected to the glue injection channel, and the cleaning device has intake section and water entering section, so that
Air-flow sweeps along water to clean the glue injection channel；Moreover, the intake section includes air accumulator, and the increasing being connected to the air accumulator
Cylinder pressure；
The pressure apparatus is connected to the upper end of the glue injection channel, when stopping injecting glue or when stopping injecting glue is latter default
Between when open under the control of the control device, make the glue injection channel upper end formed negative pressure；Or, in the cleaning device
It is opened under the control of the control device when cleaning the mixing head, the upper end of the glue injection channel is made to form positive pressure.
Further, there is desiccant in the air accumulator of the intake section.
Further, each pumping installations has pump, motor and relay；The motor is configured to drive the pump
Rotation, is delivered to the mixing head for the glue in a glue tank；
The relay configuration accesses the phase sequence of the motor at automatic discrimination, in the real-time phase sequence of the motor and in advance
The power supply of the motor is turned off when if phase sequence not being inconsistent or the three-phase voltage of the motor is not measured greater than preset value.
Further, the glue injection channel includes upper cavity, mixing chamber and adhesive pouring nozzle；The pressure apparatus and it is described on
The connection of portion's cavity；At least one glue feeding opening is offered on the mixing head, each glue feeding opening is connected to the mixing chamber, and
Each glue feeding opening is via one pumping installations of piping connection.
Further, further includes:
Rotating mechanism is installed on the mobile mechanism, and has the output shaft being rotated；And the mixing head
Include:
Glue injection part inside defines the mixing chamber and the adhesive pouring nozzle；
Agitating device is installed in the mixing chamber, to be stirred to a variety of glues entered in the mixing chamber, institute
It states and is formed with mounting hole on the end face of one end far from the adhesive pouring nozzle of the shaft of agitating device, to be stirred described in installation drive
The output shaft of device rotation is mixed, and is also formed with outward on the end face of one end far from the adhesive pouring nozzle of the shaft
The tubular pillar of extension；
Sealing device is installed on one end far from the adhesive pouring nozzle of the mixing chamber, is offered thereon for passing through
State the through-hole of output shaft；And the sealing device towards being formed with annular recess, the ring-type on the surface of the mixing chamber
Groove is configured to be inserted into the tubular pillar in it；And
Link block, lower end are installed on the side far from the adhesive pouring nozzle of the sealing device, and the upper end is installed on institute
State mobile mechanism, and define the upper cavity in it, the upper cavity via on the sealing device intercommunicating pore with
The mixing chamber connection.
Further, it is formed on the outer peripheral surface of the tubular pillar fluted；The groove is in the shape of a spiral；The tubular is convex
The interior diameter of column is greater than the diameter of the mounting hole, and the interior diameter of the annular recess is greater than the diameter of the mounting hole；Institute
Stating agitating device is screw mixing device.
Further, the sealing device includes:
Sealing ring, central position open up hole；With
Pipe, is installed in described hole, inside limits the through-hole；And the pipe and described hole limit the ring
Shape groove.
Further, further include at least one filter, be installed on each pumping installations and be connected with the pumping installations
Glue tank between pipeline on；The pump is metering pump.
Further, the cleaning device is connected to via a glue feeding opening with the glue injection channel or the mixing
Cleaning hole is offered on head, the cleaning device is connected to via the cleaning hole with the glue injection channel.
In the automatic glue injection apparatus of the utility model, since cleaning device has intake section and water entering section, mixing head can be made
When cleaning, the high volatile solvent such as methylene chloride is not used, but washes with water mixing head, it is pollution-free.And intake section
It include air accumulator, pressurized cylinder with air accumulator and pressurized cylinder the utility model.Compressed air is housed, gas source is unstable, increases in air accumulator
Cylinder pressure cooperates air accumulator, gas source can be made to stablize, such as stable point 8KG, and gas source is stablized, and flushing pressure can be improved, and guarantees to rinse pressure
The stability of power.And the automatic glue injection apparatus of the utility model can also make glue injection channel when cleaning to glue injection channel
Upper end forms barotropic state, specifically the compressed air of pressure apparatus addition and the same pressure of cleaning pressure-air, so that mixed
Close that intracavitary pressure difference is the same, to make all materials that can only spray out of glue injection channel adhesive pouring nozzle, it is ensured that mixed glue
Liquid will not converse mixing head upper cavity, protect mixing head.Further, pressure apparatus can make injecting glue logical when stopping injecting glue
The upper end in road forms negative pressure state, and for the glue in glue injection channel due to the effect of atmospheric pressure, resting in glue injection channel will not
Continue drippage downwards.
It further, can be in the feelings of the spread of voltage received when motor since each pumping installations has relay
Cause the movement of motor unstable under condition, may cause glue refluence or the unstable adhesive liquid quantity that demand is not achieved of glue flow velocity
When (i.e. glue flow rate fluctuation is larger), motor power is quickly turned off, and sound an alarm；And then keep control device control whole
A automatic glue injection apparatus stops working, and stops injecting glue, and thus preventing glue filling device, glue is flow backwards during the work time, guarantees work
Part processing quality.
Further, the mixing head in the automatic glue injection apparatus of the utility model has mutually matched tubular pillar and ring
Shape groove constitutes the sealed pathway that bending extends, it is possible to increase glue enters the resistance in the through-hole on sealing device, prevents glue
Into in the through-hole.In addition, tubular pillar and annular recess cooperation are fairly simple, after the disassembly of mixing head, and disassembly
Cleaning and installation.
Detailed description of the invention
Some specific realities of the utility model are described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter
Apply example.Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that
The drawings are not necessarily drawn to scale.In attached drawing:
Fig. 1 is the schematic block diagram according to the automatic glue injection apparatus of the utility model one embodiment.
Specific embodiment
According to the accompanying drawings to the detailed description of the utility model specific embodiment, those skilled in the art will be more
Add the above-mentioned and other purposes, advantages and features of clear the utility model.
Fig. 1 is the schematic block diagram according to the automatic glue injection apparatus of the utility model one embodiment.As shown in Figure 1,
Automatic glue injection apparatus may include at least one glue tank 200, at least one pumping installations 500, mixing head 100, mobile mechanism 300,
Workbench 400, cleaning device 900, pressure apparatus 600 and control device.Each glue tank 200 is for holding glue.Mixing head
100 are installed on mobile mechanism 300, to move under the drive of mobile mechanism 300 according to desired guiding trajectory, open up on mixing head 100
There is at least one glue feeding opening, and defines glue injection channel in mixing head 100.Glue injection channel includes upper cavity, mixing chamber and note
Jiao Zui.
Each pumping installations 500 connects a glue tank 200 and mixing head 100, and the glue in a glue tank 200 is conveyed
To mixing head 100, to carry out injecting glue to the object being placed on workbench 400.
Cleaning device 900 is connected to glue injection channel.For example, cleaning device 900 connects via a glue feeding opening and glue injection channel
Cleaning hole is offered on logical or mixing head 100, cleaning device 900 is connected to via cleaning hole with glue injection channel.Particularly, it cleans
Device 900 has intake section 920 and water entering section 910, so that air-flow sweeps along water to clean glue injection channel.Preferably, intake section 920 wraps
Air accumulator 921 is included, and the pressurized cylinder 922 being connected to air accumulator 921, it is ensured that enough flushing pressures, and can guarantee to rush
Wash the stability of pressure.
Further, in the utility model embodiment, pressure port is also provided on mixing head 100, connection injecting glue is logical
The upper end in road.What pressure apparatus 600 was connected to pressure port.Pressure apparatus 600 can be configured to when stopping injecting glue or stop injecting glue
It is opened under control of the control means when latter preset time, so that the upper end of glue injection channel forms negative pressure, in this way extraneous big
Under the action of atmospheric pressure, glue effect of inertia and self gravitation effect can be overcome, be located at glue in glue injection channel, thus anti-
Only glue continues to drip.
Preferably, pressure apparatus 600 may be additionally configured to when cleaning device 900 cleans mixing head 100 in control device
Control is lower to open, and the upper end of glue injection channel is made to form positive pressure.Inventor is in the course of the study, it was found that due in injecting glue process
In to sweep along clear water to clean glue injection channel with pressure-air repeatedly, in this process, a large amount of colloid can break through reinforced seal
The upper cavity of mixing head 100 is entered to cause a series of problem.The reason of generating this phenomenon is, due to mixing chamber
It disperses everywhere after gas-liquid mixture and the mixing of remaining glue, than narrow to make a large amount of colloid that can break through in interior space
Reinforced seal enters the upper cavity of mixing head 100, causes the parts damages of glue-injection machine.Inventor is passed through into the pressure port
After air is so as to form positive pressure in upper cavity, when sweeping along clear water to clean with pressure-air again, it is found that all materials can only
It is sprayed from the adhesive pouring nozzle of glue injection channel, it is ensured that mixed glue converse will not arrive upper cavity.
In order to guarantee the effect of cleaning, desiccant 923 can be placed in the air accumulator 921 of intake section 920.
In some embodiments of the utility model, each pumping installations 500 has pump 510, motor 520 and relay
530.Motor 520 is configured to drive 510 rotation of pump, the glue in a glue tank 200 is delivered to via a glue feeding opening mixed
Syncephalon 100, to carry out injecting glue to the object 800 being placed on workbench 400.Relay 530 is configured to automatic discrimination access
The phase sequence of motor 520, is not inconsistent with the real-time phase sequence in motor 520 with default phase sequence or the three-phase voltage of motor 520 is not measured greatly
The power supply of motor is turned off when preset value and is alarmed.Preferably, the preset value that three-phase voltage is not measured can be set as 30% to
50%.
Glue is easy refluence or the certain positions of product to be processed during the reason of designing in this way and inventor have found injecting glue
Adhesive liquid quantity inadequate reason in the place's of setting is: inventor thinks automatic glue injection apparatus during injecting glue, and supply voltage may not
Stablize, the movement fluctuated to motor 520 of supply voltage has an impact, to affect the speed for glue, causes to supply
Glue flow rate it is extremely unstable, or even occur flow backwards phenomenon.Since each pumping installations 500 has in the automatic glue injection apparatus
There is relay 530, the movement of motor can be caused unstable in the case where the spread of voltage received when motor 520, it may
Cause glue to flow backwards or when the unstable adhesive liquid quantity that demand is not achieved of glue flow velocity, quickly turns off 520 power supply of motor, and issue
Alarm；And then so that control device is controlled entire automatic glue injection apparatus and stop working, thus prevent glue filling device in the course of work
Middle glue is flow backwards, and guarantees workpiece processing quality.
In some embodiments of the utility model, glue tank 200, pumping installations 500 and glue feeding opening be it is multiple, this can be made
Automatic glue injection apparatus is applied to mixing and glue injection technical field.Pressure port is connected to upper cavity.Each glue feeding opening and mixing chamber connect
It is logical.Specifically, in some embodiments, glue tank 200, pumping installations 500 and glue feeding opening are 2, and automatic injecting glue can be made to fill
It sets especially suitable for A/B polyurethane adhesive mixing and glue injection field.
In some embodiments of the utility model, automatic glue injection apparatus may also include rotating mechanism, be installed on moving machine
Structure 300, and there is the output shaft being rotated.Moreover, mixing head 100 include glue injection part, agitating device, sealing device and
Link block.Mixing chamber and adhesive pouring nozzle are defined in glue injection part.Agitating device can be screw mixing device, be installed on mixing chamber
It is interior, to be stirred to a variety of glues entered in mixing chamber.
Particularly, it is formed with mounting hole on the end face of one end of the separate adhesive pouring nozzle of the shaft of agitating device, with installation
The output shaft of agitating device rotation is driven, and is also formed on the end face of one end of the separate adhesive pouring nozzle of shaft outwardly extending
Tubular pillar.
Sealing device is installed on one end of the separate adhesive pouring nozzle of mixing chamber, is offered thereon for by the logical of output shaft
Hole；And annular recess is formed on the surface towards mixing chamber of sealing device, annular recess is configured to be inserted into tubular pillar
In it.Tubular pillar is inserted into annular recess, be may make up the double elbow structures of approximate serpentine, is significantly increased glue and enter through-hole
Path, also increase significantly the resistance that glue enters through-hole.Further, sealing device may also include oil sealing portion, be set to
In through-hole, to further increase sealing performance.
The lower end of link block is installed on the side of the separate adhesive pouring nozzle of sealing device, and upper end is installed on mobile mechanism 300, and
Upper cavity is defined in it, upper cavity is connected to via the intercommunicating pore on sealing device with mixing chamber.It can be opened up on link block
At least one glue feeding opening and pressure port, each glue feeding opening are connected to by glue feeding channel with the mixing chamber in glue injection part.Each into glue
Hole is used to install the glue feeding tube of connection pumping installations 500.Preferably, glue feeding channel and glue feeding opening are two, so that two kinds of glue
It is mixed in glue injection part.Two glue feeding openings may be provided on two opposite flanks of link block.
In some embodiments of the utility model, formed on the outer peripheral surface of tubular pillar fluted.Groove can be along shaft
The axis direction in portion, which tilts, to be extended, so that groove is in the shape of a spiral.Further, the interior diameter of tubular pillar is greater than the straight of mounting hole
Diameter, and the interior diameter of annular recess is greater than the diameter of mounting hole, to further increase the length of sealed pathway.
In some preferred embodiments of the utility model, sealing device includes sealing ring and pipe.The center of sealing ring
Hole is opened up at position.Sealing ring can be used rubber material and be made.Pipe is copper pipe, is installed in hole, inside limits logical
Hole；And pipe and hole limit annular recess.
In some embodiments of the utility model, automatic glue injection apparatus further includes at least one filter 700, is installed on
On the pipeline between glue tank 200 that each pumping installations 500 is connected with the pumping installations 500.Pump 510 in pumping installations 500
For metering pump, the adhesive liquid quantity of the various glues into glue injection channel can control.
So far, although those skilled in the art will appreciate that the more of the utility model have been shown and described in detail herein
A exemplary embodiment still, still can be according to the utility model public affairs in the case where not departing from the spirit and scope of the utility model
The content opened directly determines or derives many other variations or modifications for meeting the utility model principle.Therefore, this is practical new
The range of type is understood that and regards as to cover all such other variations or modifications.
Claims (6)
1. a kind of automatic glue injection apparatus characterized by comprising for holding at least one glue tank, at least one pump of glue
Send device, mobile mechanism, mixing head, workbench, control device, pressure apparatus and cleaning device；
Glue injection channel is provided in the mixing head, and the mixing head is installed on the mobile mechanism, in the moving machine
It is moved under the drive of structure according to desired guiding trajectory；
Each pumping installations connects a glue tank and the mixing head, and the glue in a glue tank is conveyed
To the mixing head, to carry out injecting glue to the object being placed on the workbench；
The cleaning device is connected to the glue injection channel, and the cleaning device has intake section and water entering section, so that air-flow
Water is swept along to clean the glue injection channel；Moreover, the intake section includes air accumulator, and the pressurization being connected to the air accumulator
Cylinder；
The pressure apparatus is connected to the upper end of the glue injection channel, when stopping injecting glue or when stopping the latter preset time of injecting glue
It opens under the control of the control device, the upper end of the glue injection channel is made to form negative pressure；Or, being cleaned in the cleaning device
It is opened under the control of the control device when the mixing head, the upper end of the glue injection channel is made to form positive pressure；
The glue injection channel includes upper cavity, mixing chamber and adhesive pouring nozzle；The pressure apparatus is connected to the upper cavity；Institute
It states and offers at least one glue feeding opening on mixing head, each glue feeding opening is connected to the mixing chamber, and each described into glue
Hole is via one pumping installations of piping connection；
Further include:
Rotating mechanism is installed on the mobile mechanism, and has the output shaft being rotated；And the mixing head packet
It includes:
Glue injection part inside defines the mixing chamber and the adhesive pouring nozzle；
Agitating device is installed in the mixing chamber, described to stir to be stirred to a variety of glues entered in the mixing chamber
It mixes and is formed with mounting hole on the end face of one end far from the adhesive pouring nozzle of the shaft of device, the stirring dress is driven with installation
The output shaft of rotation is set, and is also formed with and extends outwardly on the end face of one end far from the adhesive pouring nozzle of the shaft
Tubular pillar；
Sealing device is installed on one end far from the adhesive pouring nozzle of the mixing chamber, is offered thereon for by described defeated
The through-hole of shaft；And the sealing device towards being formed with annular recess, the annular recess on the surface of the mixing chamber
It is configured to be inserted into the tubular pillar in it；And
Link block, lower end are installed on the side far from the adhesive pouring nozzle of the sealing device, and the upper end is installed on the shifting
Motivation structure, and the upper cavity is defined in it, the upper cavity via on the sealing device intercommunicating pore with it is described
Mixing chamber connection；
It is formed on the outer peripheral surface of the tubular pillar fluted；The groove is in the shape of a spiral；The interior diameter of the tubular pillar is big
In the diameter of the mounting hole, and the interior diameter of the annular recess is greater than the diameter of the mounting hole；The agitating device is
Screw mixing device.
2. automatic glue injection apparatus according to claim 1, which is characterized in that
There is desiccant in the air accumulator of the intake section.
3. automatic glue injection apparatus according to claim 1, which is characterized in that each pumping installations has pump, motor
And relay；The motor is configured to that the pump is driven to rotate, and the glue in a glue tank is delivered to the mixing
Head；
The relay configuration accesses the phase sequence of the motor at automatic discrimination, in the real-time phase sequence of the motor and default phase
The power supply of the motor is turned off when sequence is not inconsistent or the three-phase voltage of the motor is not measured greater than preset value.
4. automatic glue injection apparatus according to claim 3, which is characterized in that the sealing device includes:
Sealing ring, central position open up hole；With
Pipe, is installed in described hole, inside limits the through-hole；And to limit the ring-type recessed for the pipe and described hole
Slot.
5. automatic glue injection apparatus according to claim 3, which is characterized in that further include at least one filter, be installed on
On the pipeline between glue tank that each pumping installations is connected with the pumping installations；The pump is metering pump.
6. automatic glue injection apparatus according to claim 5, which is characterized in that the cleaning device via described in one into glue
Hole be connected to the glue injection channel or the mixing head on offer cleaning hole, the cleaning device via the cleaning hole and
The glue injection channel connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820121661.3U CN208449774U (en) | 2018-01-24 | 2018-01-24 | A kind of automatic glue injection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820121661.3U CN208449774U (en) | 2018-01-24 | 2018-01-24 | A kind of automatic glue injection apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN208449774U true CN208449774U (en) | 2019-02-01 |
Family
ID=65141185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201820121661.3U Active CN208449774U (en) | 2018-01-24 | 2018-01-24 | A kind of automatic glue injection apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109731523A (en) * | 2019-02-27 | 2019-05-10 | 贵州振华华联电子有限公司 | One kind three matches adhesive dispenser than part |
| CN112337751A (en) * | 2019-08-09 | 2021-02-09 | 竑腾科技股份有限公司 | Control method for preventing glue leakage of glue dispenser |
-
2018
- 2018-01-24 CN CN201820121661.3U patent/CN208449774U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109731523A (en) * | 2019-02-27 | 2019-05-10 | 贵州振华华联电子有限公司 | One kind three matches adhesive dispenser than part |
| CN112337751A (en) * | 2019-08-09 | 2021-02-09 | 竑腾科技股份有限公司 | Control method for preventing glue leakage of glue dispenser |
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