CN109453945A

CN109453945A - A kind of hot melt adhesive glue dispensing valve and dispenser

Info

Publication number: CN109453945A
Application number: CN201811341436.1A
Authority: CN
Inventors: 何永祥; 马金耀
Original assignee: Xin Chen Zhuo Rui (suzhou) Intelligent Equipment Co Ltd
Current assignee: Xin Chen Zhuo Rui (suzhou) Intelligent Equipment Co Ltd
Priority date: 2018-11-12
Filing date: 2018-11-12
Publication date: 2019-03-12

Abstract

The invention discloses a kind of hot melt adhesive glue dispensing valve and dispensers, it include: dispensing valve body, the dispensing valve body includes valve body, glue bucket, contact pin portion and heating component, the contact pin portion is located at the end of dispensing valve body, the contact pin portion includes a plastic pin, driving assembly and the iron block around the setting of plastic pin, on the extended line for the central axis that described plastic pin is located at the glue bucket；The heating component includes the first heating component and the second heating component, the driving component driving glue bucket or iron block move up and down so that point plastic pin is located at the centre of iron block, when dispensing pause, driving assembly driving dispensing bucket drives point plastic pin to be moved to the centre of iron block or driving assembly in valve body and drives iron block movement so that point plastic pin is located at the centre of iron block, the heat of iron block can allow a plastic pin to keep original temperature, the phenomenon that avoiding dispensing needle head exposure, glue easy to form condenses in air, blocking.

Description

A kind of hot melt adhesive glue dispensing valve and dispenser

Technical field

The present invention relates to automation dispensing fields, it is more particularly related to a kind of hot melt adhesive glue dispensing valve and dispensing Machine.

Background technique

Universal with electronic equipment, hot melt adhesive and hot melt adhesive injecting machine are also widely used in the bonding of various electronic equipments Process, hot melt adhesive is not suitable for any flux in production and application, nontoxic, tasteless, pollution-free, is known as " green adhesive ", It is particularly suitable to be used on the production line of serialization.Hot melt adhesive PUR is to be divided to be heating and curing to be with two kinds of moisture-curable, moisture-curable Finger, which contacts moisture through the air with air and reacts, becomes solid, is generally for 8-16 degrees Celsius under PUR hot melt adhesive room temperature Solid-state, PUR hot melt adhesive become liquid and need to preheat, preheating temperature be 110 DEG C 15 minutes, PUR hot melt adhesive is especially set for some Material of non-refractory such as mobile phone frame etc..

But needle mouth to be used for the need of some products is long, the temperature at the aerial needle mouth of exposure due to Phenomena such as some reasons are difficult to keep due temperature after suspending, and will cause glue and condense, blocking influences production efficiency.

Summary of the invention

It is an object of the invention to solve at least the above problems, and provide the advantages of at least will be described later.

It is a still further object of the present invention to provide a kind of hot melt adhesive glue dispensing valve and dispensers, and driving assembly is arranged in dispenser Driven when pause dispensing bucket drive a point plastic pin be moved in valve body the centre of iron block or driving assembly driving iron block it is mobile so that Point plastic pin is located at the centre of iron block, and the heat of iron block can allow a plastic pin to keep original temperature, solve since plastic pin is long Phase exposure forms glue condensation in air, puts plastic pin blockage problem.

In order to realize these purposes and other advantages according to the present invention, a kind of hot melt adhesive glue dispensing valve, including point are provided Glue valve body, the dispensing valve body include valve body, glue bucket, contact pin portion and heating component, and the contact pin portion is located at glue dispensing valve sheet The end of body, the contact pin portion include that a plastic pin, driving assembly and the iron block being arranged around plastic pin, described plastic pin are located at institute On the extended line for stating the central axis of glue bucket；The top of the valve body is equipped with into bung hole, and there are glue bung, institute in the top of the glue bucket The area for stating glue bung enters the area of bung hole greater than described in；The heating component includes the first heating component and the second heating group Part, first heating component and the second heating component are respectively used to heat to glue bucket and iron block, and first heating component is Heating film, the heating film fit in around the glue bucket, and second heating component is and the integrally formed heating of iron block The outside of block, the valve body is equipped with temperature controller, and the temperature controller adjusts the temperature of the first heating component and the second heating component respectively Degree；The driving component driving glue bucket or iron block move up and down so that point plastic pin is located at the centre of iron block.

Preferably, the heating film is segmented into several, the heating film include the first heating film, the second heating film and Third heating film, first heating film, the second heating film and third heating film are spaced from top to bottom to be fitted in around glue bucket And the temperature of three's control is incremented by successively.

Preferably, the driving component includes spring and buckle, and the spring includes the first spring and second spring, described First spring and second spring are fixedly installed on the bottom end of valve body and the two and are arranged with the axisymmetrical of plastic pin, first bullet Spring and second spring are located at the lower section of the glue bucket；The buckle is located at the top of valve body, and the buckle is for consolidating glue bung Due on valve body；When plastic pin is in dripping glue state, the glue bung is fixed by snap on valve body, and the glue bucket makes First spring and second spring are in pressed status；When plastic pin is in resting state, the buckle is unlocked, first bullet Spring and second spring are in original state after bouncing glue bucket, and described plastic pin is located at the centre of the iron block.

Preferably, there is gap between the iron block and valve body, be connected between the iron block and valve body by fixed lobe, The fixed lobe is fixed on valve body, and the vertical direction of the outer wall of the iron block is equipped at least two sliding slots, described The top of iron block is equipped with electromagnet；When plastic pin is in dripping glue state, the electromagnet is powered, and iron is sucked in the electromagnet Block, the fixed lobe are located at the least significant end of sliding slot；When plastic pin is in resting state, the electromagnet power-off, the iron Glide downwards, the fixed lobe are located at the top of sliding slot to block under the effect of gravity, and the end of described plastic pin is located at iron block Between.

Preferably, the top of the sliding slot is arranged to tilting, the tilt angle and the cunning of the fixed lobe upper end The tilt angle on the top of slot is identical.

Preferably, the range of tilt angles on sliding slot top is 15 °~30 °.

Preferably, the heating film is Kapton.

Preferably, heat insulating strip is equipped between each heating film.

Preferably, the outer wall of the valve body is heat-barrier material.

Preferably, a kind of dispenser, the dispenser include hot melt adhesive glue dispensing valve, which includes glue dispensing valve sheet Body, the dispensing valve body include valve body, glue bucket, contact pin portion and heating component, and the contact pin portion is located at the end of dispensing valve body End, the contact pin portion include that a plastic pin, driving assembly and the iron block being arranged around plastic pin, described plastic pin are located at the glue bucket Central axis extended line on；The top of the valve body is equipped with into bung hole, and there are glue bung, the glue bucket in the top of the glue bucket The area of lid enters the area of bung hole greater than described in；The heating component includes the first heating component and the second heating component, described First heating component and the second heating component are respectively used to heat to glue bucket and iron block, and first heating component is heating film, The heating film fits in around the glue bucket, second heating component be with the integrally formed heat block of iron block, it is described The outside of valve body is equipped with temperature controller, and the temperature controller adjusts the temperature of the first heating component and the second heating component respectively；It is described Driving assembly driving glue bucket or iron block move up and down so that point plastic pin is located at the centre of iron block.

The present invention is include at least the following beneficial effects:

1, when dispensing suspends, driving assembly driving dispensing bucket drive a point plastic pin be moved in valve body the centre of iron block or Electromagnet power-off iron block moves down under gravity so that point plastic pin is located at the centre of iron block, and the heat of iron block can allow Point plastic pin keeps original temperature, avoids the phenomenon that dispensing needle head exposes glue condensation easy to form, blocking in air；

2, heating component select heating film, PI film (Kapton) can very short time be heated to very high temperature and High-low temperature resistant, lightweight and facilitates on fitting and glue bucket, easy to use, significantly reduces the weight of glue dispensing valve, has saved cost While improve production efficiency.

Further advantage, target and feature of the invention will be partially reflected by the following instructions, and part will also be by this The research and practice of invention and be understood by the person skilled in the art.

Detailed description of the invention

Overall schematic when Fig. 1 is the hot melt adhesive glue dispensing valve dispensing of embodiment 1；

Overall schematic when Fig. 2 is the hot melt adhesive glue dispensing valve pause of embodiment 1；

The structural schematic diagram in contact pin portion when Fig. 3 is the hot melt adhesive glue dispensing valve dispensing of embodiment 2；

The structural schematic diagram in contact pin portion when Fig. 4 is the hot melt adhesive glue dispensing valve pause of embodiment 2；

Fig. 5 is the enlarged drawing at A；

Fig. 6 is the sectional view of sliding slot in iron block；

Fig. 7 is the structural schematic diagram of heating film of the invention；

Appended drawing reference: 10, valve body, 20, glue bucket, 210, glue bung, the 220, first heating component, 230, insulating layer, 310, Buckle, 320, spring, 240, point plastic pin, 250, iron block, 251, sliding slot, 110, fixed lobe, 410, electromagnet, 252, sliding slot Top, 253, the bottom end of sliding slot, the 510, first heating film, the 520, second heating film, 530, third heating film, 540, connecting line.

Specific embodiment

Present invention will be described in further detail below with reference to the accompanying drawings, to enable those skilled in the art referring to specification text Word can be implemented accordingly.

It should be appreciated that such as " having ", "comprising" and " comprising " term used herein do not allot one or more The presence or addition of a other elements or combinations thereof.

As described in Fig. 1-7, the present invention provides a kind of hot melt adhesive glue dispensing valve, including dispensing valve body, the dispensing valve body Including valve body 10, glue bucket 20, contact pin portion and heating component, the contact pin portion is located at the lower end of dispensing valve body, the contact pin portion Including plastic pin 240, driving assembly and around an iron block 250 for plastic pin setting, described plastic pin is located at the center of the glue bucket On the extended line of axis；The top of the valve body 10 is equipped with into bung hole, and there are glue bung 210, the glue bucket in the top of the glue bucket The area of lid 210 enters the area of bung hole greater than described in；The heating component includes the first heating component 220 and the second heating group Part, first heating component 220 and the second heating component are respectively used to heat to glue bucket 20 and iron block 250, and described first adds Hot component 220 is heating film, and the heating film fits in around the glue bucket 20, and second heating component is and iron block The outside of 250 integrally formed heat blocks, the valve body 10 is equipped with temperature controller, and the temperature controller adjusts the first heating component respectively 220 and second heating component temperature；Glue bucket 20 or iron block 250 is driven to move up and down for the driving component so that point plastic pin 240 are located at the centre of iron block 250.

Further, it is equipped with contact pin portion in the lower end of glue dispensing valve, the contact pin portion includes driving assembly, the driving component It is divided into two kinds, a kind of driving assembly is that a driving point plastic pin 240 is moved upwards when plastic pin 240 suspends dispensing, so that point plastic pin 240 are located at the centre of iron block 250, and another driving assembly is electromagnet 410, and iron block 250 is mobilizable to be connect with valve body 10, lead to The energization and power-off for crossing electromagnet 410 are so that the movement of iron block 250 is also to that a plastic pin 240 is allowed to be located in iron block 250 Between, the heat of iron block 250 can make the glue being detained in dispensing needle 240 keep temperature, avoid the occurrence of the glue in a plastic pin 240 The phenomenon that condensation, blocking, two kinds of driving methods will be described in detail below.

Further, the first heating component 220 is heating film, and the heating film is preferably for Kapton, polyamides The film adhered face of imines be 3M double-sided adhesive fix, it is only necessary to tearing release paper can be bonded, it is very convenient and with glue bucket Stickiness it is very good, glue thermally equivalent in glue bucket can be allowed after heating, it is comparable thin about that there are also the thickness of heating film Only 0.2mm-0.4mm and heating speed is very fast saves many spaces for spot gluing equipment, has saved a large amount of cost and mentioned High production efficiency, it is of course possible to select other heating methods, such as heating sheet.

In the present embodiment, the heating film is segmented into several, and the heating film includes the first heating film 510, second Heating film 520 and third heating film 530, first heating film 510, the second heating film 520 and third heating film 530 from up to Lower interval fits in around glue bucket 20 and the temperature of three's control is incremented by successively, specifically, by taking PUR hot melt adhesive as an example, point The temperature of the up till now glue of glue requires heat to 120 DEG C -130 DEG C, if but PUR hot melt adhesive keeps this temperature 2 small for a long time When more than will lead to the problems such as discoloration is decomposed in glue deterioration appearance, therefore heating film is divided into several fritters and be bonded respectively and glue bucket wall On, the temperature that total temperature controller controls each heating film respectively is connected by connecting line 540, the glue that will be used is arranged to High temperature is used herein as third heating film 530, the glue finally used be arranged to low temperature only and need to guarantee glue can flow can be big About temperature is 75 DEG C -85 DEG C, and PUR hot melt adhesive is needed to be bonded one piece of high-temperature heating film third heating film 530, temperature in contact pin portion Degree is set as 130 DEG C, and one piece of first heating film of low-temperature heat film 510 is arranged on the top of glue bucket 20, and temperature setting is 80 DEG C, One piece of heating film of setting is that 520 temperature setting of the second heating film is 100 DEG C and can make among high-temperature heating film and low-temperature heat film PUR hot melt adhesive is normally carried out dispensing operation, certainly for some other properties hot melt adhesive as the case may be configured plus The temperature that the quantity and needs of hotting mask heat, in addition, being equipped with heat insulating strip, when heating, heat insulating strip energy between each heating film Good heat-blocking action is enough played, can effectively prevent and transmitted between adjacent two heating member because of heat transfer or heat radiation largely Heat, so that the temperature of the glue of each warm area effectively be avoided to reach unanimity.

In the present embodiment, as described in Fig. 1-2, the driving component includes spring 320 and buckle 310, and the spring 320 wraps The first spring and second spring are included, the bottom end that first spring and second spring are fixedly installed on valve body 10 and the two is with dispensing The axisymmetrical setting of needle 240, first spring and second spring are located at the lower section of glue bucket 20；The buckle 310 is located at valve The top of body 10, the buckle 310 is for being fixed on valve body 10 for glue bung 210；Dripping glue state is in plastic pin 240 When, the glue bung 210 is fixed on valve body 10 by buckle 310, and the glue bucket 20 makes the first spring and the second bullet at this time Spring is in pressed status；Plastic pin 240 placed in a suspend state when, the buckle 310 is unlocked, first spring and the second bullet Spring is in original state after bouncing glue bucket, and described plastic pin 240 is located at the centre of the iron block 250.

Specifically, when plastic pin 240 is in dripping glue state, first spring and second spring are in pressed status, The height that the height of cavity between the dispensing bucket 20 and valve body 10 is more than or equal to first spring and second spring is pressed down Degree, so spring can be restored to reset condition after buckle 310 is opened；Certainly buckle 310 opening after, the first spring and Second spring can also not have to be restored to reset condition, but final purpose is that a plastic pin is needed to move upward to up to inside iron block , only so that the first spring and second spring be restored to that reset condition can control it is more accurate, when spring is by under Pressure is bigger when pressing more, and the precision of control is difficult to control.

As described in Fig. 3-6, another driving assembly is the gravity of electromagnet 410 and iron block itself, the iron block 250 with There is gap between valve body 10, is connected between the iron block 250 and valve body 10 by fixed lobe 110, the fixed lobe 110 It is fixed on valve body 10, the vertical direction of the outer wall of the iron block 250 is equipped at least two sliding slots 251, the iron block 250 top is equipped with electromagnet 410；When plastic pin 240 is in dripping glue state, the electromagnet 410 is powered, the electromagnet 410 are sucked iron block 250, and the fixed lobe 110 is located at the low side 253 of sliding slot；When plastic pin is in resting state, the electricity Magnet 410 powers off, and glide downwards, the fixed lobe 110 are located at the top 252 of sliding slot to the iron block 250 under the effect of gravity, The end of described plastic pin 240 is between iron block 250.

Further, the iron block 250 is arranged around point plastic pin 240, and shape is similar to cylindrical body, cross section For trapezoidal similar cylindrical body, when plastic pin 240 is in dripping glue state, the electromagnet 410 above iron block 250 is powered will Iron block 250 is sucked；When plastic pin is in resting state, electromagnet 410 powers off magnetic disappearance, effect of the iron block 250 in gravity Under move downward, the fixed lobe 110 being fixedly installed on valve body 10 slides on the sliding slot of iron block 250, when fixed lobe 110 When reaching the top 252 of iron block, the stopping of iron block 250 is moved downward, and puts the centre that plastic pin 240 is located at the iron block 250 at this time.

Specifically, the top 252 of the sliding slot is arranged inclined formula, the tilt angle of 110 upper end of fixed lobe with The tilt angle on the top 252 of the sliding slot is identical, and the range of the tilt angle on the top 252 of the sliding slot is 15 °~30 °, When iron block 250 moves downward under gravity, the fixed lobe 110 plays stopping iron block and continues the work moved downward With the tilt angle that sliding slot 251 and fixed lobe 110 are arranged to tilting and the two being matched, in fixed lobe 110 Some cushions can also be arranged in contact surface, so that the two reduces impact force when hitting, but by normal market Point plastic pin length, iron block decline apart from very little thus generate impact force be also it is very little, by sliding slot 251 and fixation it is convex The range for playing the tilt angle that 110 are arranged to tilting and the two is 15 °~30 °, mainly engages the two more steady Gu avoiding the occurrence of the phenomenon that iron block 250 skids off.

In the present embodiment, the outer wall of the valve body 10 is made of heat-barrier material, and the outer wall of valve body 10 is located at outermost layer, operation Personnel can touch, and be arranged to heat-barrier material can be to avoid because scalding caused by the reasons such as operator's misoperation, valve body 10 Outer wall used in material be made of the preferable heat-barrier material of heat-proof quality, such as glass fibre, rock wool or evacuated panel etc..

The present invention also proposes a kind of dispenser, which includes hot melt adhesive glue dispensing valve, the hot melt adhesive glue dispensing valve it is specific Structure is referring to above-described embodiment, since this dispenser uses whole technical solutions of above-described embodiment, at least has upper All beneficial effects brought by the technical solution of embodiment are stated, are no longer illustrated one by one herein.

In conclusion the phenomenon that in order to make a plastic pin 240 be not in glue condensation, blocking when suspending dispensing, The present invention is provided with two kinds of driving assemblies and a plastic pin 240 is made to suspend the centre that may be at iron block when dispensing, iron block Heat plastic pin can be allowed to keep an original temperature；A kind of mode is to be moved upwards a plastic pin 240 by spring 320；Separately One is power off the glide downwards under gravity of iron block 250 by electromagnet 410 outside；Above two mode can make a little Plastic pin 240 is when suspending dispensing positioned at the centre of the iron block 250；In addition heating component selects heating film, can be very short Time is heated to very high temperature and high-low temperature resistant, lightweight and facilitates on fitting and glue bucket, easy to use, significantly reduces a little The weight of glue valve improves production efficiency, while heating film can be also divided into several heating films while having saved cost, point Region control temperature can be to avoid the appearance for leading to problems such as glue deterioration decompose discoloration under glue hot soak condition.

Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited In specific details and legend shown and described herein.

Claims

1. a kind of hot melt adhesive glue dispensing valve characterized by comprising dispensing valve body, the dispensing valve body include valve body, glue Bucket, contact pin portion and heating component, the contact pin portion are located at the lower end of dispensing valve body, and the contact pin portion includes point plastic pin, driving Component and an iron block around the setting of plastic pin, on the extended line for the central axis that described plastic pin is located at the glue bucket；The valve The top of body is equipped with into bung hole, and there is glue bung on the top of the glue bucket, and the area of the glue bung enters the face of bung hole greater than described in Product；The heating component includes the first heating component and the second heating component, first heating component and the second heating component It is respectively used to heat to glue bucket and iron block, first heating component is heating film, and the heating film fits in the glue bucket Around, second heating component is to be equipped with temperature controller, the temperature with the integrally formed heat block of iron block, the outside of the valve body Control device adjusts the temperature of the first heating component and the second heating component respectively；The driving component drives glue bucket or iron block or more Movement is so that point plastic pin is located at the centre of iron block.

2. a kind of hot melt adhesive glue dispensing valve as described in claim 1, which is characterized in that the heating film is segmented into several, The heating film includes the first heating film, the second heating film and third heating film, first heating film, the second heating film and the Three heating films are spaced from top to bottom to be fitted in around glue bucket and the temperature of three's control is incremented by successively.

3. a kind of hot melt adhesive glue dispensing valve as described in claim 1, which is characterized in that the driving component includes spring and card Button, the spring include the first spring and second spring, and first spring and second spring are fixedly installed on the bottom end of valve body And the two is arranged with the axisymmetrical of plastic pin, first spring and second spring are located at the lower section of glue bucket；The buckle position In the top of valve body, the buckle is for being fixed on valve body for glue bung；When plastic pin is in dripping glue state, the glue bucket Cover fixed by snap on valve body, the glue bucket makes the first spring and second spring be in pressed status；At plastic pin When halted state, the buckle is unlocked, first spring and second spring glue bucket is bounced after in original state, it is described Point plastic pin is located at the centre of the iron block.

4. a kind of hot melt adhesive glue dispensing valve as described in claim 1, which is characterized in that there is gap between the iron block and valve body, It is connected between the iron block and valve body by fixed lobe, the fixed lobe is fixed on valve body, the iron block The vertical direction of outer wall is equipped at least two sliding slots, and the top of the iron block is equipped with electromagnet；It is gluey that point is in plastic pin When state, the electromagnet is powered, and iron block is sucked in the electromagnet, and the fixed lobe is located at the least significant end of sliding slot；In a plastic pin When in resting state, the electromagnet power-off, glide downwards, the fixed lobe are located at cunning to the iron block under the effect of gravity The top of slot, the end of described plastic pin is between iron block.

5. a kind of hot melt adhesive glue dispensing valve as claimed in claim 4, which is characterized in that the top of the sliding slot is arranged to tilt The tilt angle of formula, the fixed lobe upper end is identical as the tilt angle on the top of the sliding slot.

6. a kind of hot melt adhesive glue dispensing valve as claimed in claim 5, which is characterized in that the range of tilt angles on the sliding slot top It is 15 °~30 °.

7. a kind of hot melt adhesive glue dispensing valve as claimed in claim 2, which is characterized in that the heating film is Kapton.

8. a kind of hot melt adhesive glue dispensing valve as claimed in claim 7, which is characterized in that be equipped between each heating film heat-insulated Item.

9. a kind of hot melt adhesive glue dispensing valve as described in claim 1, which is characterized in that the outer wall of the valve body is heat-barrier material.

10. a kind of dispenser, which is characterized in that including hot melt adhesive glue dispensing valve as claimed in any one of claims 1 to 9.