CN206085690U - 3D print pen cap for brush - Google Patents

Abstract

The utility model discloses a 3D print pen cap for brush. This 3D print pen cap for brush includes casing and heat insulating strip, the casing has holding chamber, first opening and second opening, first opening with the second opening all communicate in the holding chamber, first open -ended opening size second open -ended size is big, first opening is used for supplying the heating head through getting into the holding intracavity, just the tip of heating head can be worn out the second opening with outstanding in the casing, the inner wall in holding chamber is equipped with a plurality ofly the heat insulating strip is worked as the heating head gets into during the holding intracavity, the outer wall of heating head with the interval has between the inner wall in holding chamber. Good and the difficult scald user of this 3D print pen cap for brush heat dissipation.

Description

The 3D printing cap for brush

Technical field

This utility model is related to 3D printing field, more particularly to a kind of 3D printing cap for brush.

Background technology

The cap for brush being furnished with 3D printing field, the nib of existing printing pen is bad due to heat-insulated and radiating, and the cap for brush holds Easily scald one's hand, and ceramic heat head exposes, and heating head easily scalds user when producing high temperature.

Utility model content

Based on this, it is necessary to provide a kind of good heat dissipation and be not easy to scald the 3D printing cap for brush of user.

A kind of 3D printing cap for brush, including housing and heat insulating strip；

The housing has containing cavity, the first opening and the second opening, and first opening is equal with the described second opening The containing cavity is communicated in, the opening size of first opening is big compared with the size of the described second opening, and first opening is used In passing through and into the accommodating intracavity for heating head, and the end of the heating head can pass second opening with protrusion In the housing；

The inwall of the containing cavity is provided with multiple heat insulating strips, when the heating head enters the accommodating intracavity, institute There is interval between the outer wall and the inwall of the containing cavity of stating heating head.

Wherein in one embodiment, also including protection block, the edge of second opening is at least provided with two guarantors Protecting block, when the heating head enters the accommodating intracavity, the end of the heating head can protrude from the protection block.

Wherein in one embodiment, the quantity of the protection block is two, and two protection blocks are oppositely arranged.

Wherein in one embodiment, there are multiple louvres on the housing, the louvre is communicated in described accommodating Chamber.

Wherein in one embodiment, first opening is relative and rounded with the described second opening, along described The cross section of housing, first opening is homocentric with the described second opening.

Wherein in one embodiment, the outer wall of the housing is in arc surfaced.

Wherein in one embodiment, the outer wall of the housing by described first one end being open to the second opening one end Gradually narrow so that the containing cavity is in semiellipsoid.

Wherein in one embodiment, the heat insulating strip is on the inwall of the containing cavity by described second one end being open One end to the described first opening extends.

Wherein in one embodiment, the heat insulating strip is uniformly distributed in the accommodating intracavity.

The above-mentioned 3D printing cap for brush, including housing and heat insulating strip；Housing has containing cavity, the first opening and second Opening, the first opening is communicated in containing cavity with the second opening, and the inwall of containing cavity is provided with multiple heat insulating strips, when heating head is entered During accommodating intracavity, there is interval between the outer wall and the inwall of containing cavity that heat head.By the setting of above-mentioned heat insulating strip so that Interval is formed between heating head and inwall, it is to avoid contact between the heating head of high temperature and the inwall of housing and cause housing generation High temperature so that the above-mentioned 3D printing cap for brush is not easy to scald one's hand.

The above-mentioned 3D printing cap for brush, is also provided with protecting the edge of block, the second opening to protect blocks at least provided with two, when When heating head enters accommodating intracavity, heating the end of head can protrude from protection block, be effectively isolated by protecting the setting of block Heating cephalic par it is direct exposed, efficiently avoid contact of the end of heating head with user, be not easy to scald and use Person.

Description of the drawings

Fig. 1 is an embodiment 3D printing schematic front view；

Fig. 2 is 3D printing schematic top plan view shown in Fig. 1；

Fig. 3 is 3D printing side cross sectional views shown in Fig. 1；

Fig. 4 is the cap for brush schematic front view of 3D printing pen shown in Fig. 1；

Fig. 5 is the schematic diagram of the first opening direction of the cap for brush shown in Fig. 4；

Fig. 6 is the schematic diagram of the second opening direction of the cap for brush shown in Fig. 4；

Schematic top plan view when Fig. 7 is the removing cap for brush of 3D printing pen shown in Fig. 2；

Schematic side view when Fig. 8 is the removing cap for brush of 3D printing pen shown in Fig. 7；

Fig. 9 is side cross sectional views when 3D printing pen shown in Fig. 8 removes the cap for brush.

Description of reference numerals

10th, 3D printing pen；100th, head is heated；110th, charging aperture；120th, discharging opening；130th, tapping channel；140th, fixing groove； 200th, collet；300th, fixed seat；310th, draw-in groove；320th, fin；400th, siphunculus is connected；500th, circuit board；600th, it is primary to lead Foot；610th, heating wire wire；700th, the cap for brush；710th, housing；711st, the first opening；712nd, the second opening；713rd, louvre；720、 Heat insulating strip；730th, block is protected；740th, buckle.

Specific embodiment

For the ease of understanding this utility model, this utility model is more fully retouched below with reference to relevant drawings State.Preferred embodiment of the present utility model is given in accompanying drawing.But, this utility model can come in many different forms real It is existing, however it is not limited to embodiment described herein.On the contrary, the purpose for providing these embodiments is made to public affairs of the present utility model The understanding for opening content is more thorough comprehensive.

It should be noted that when element is referred to as " being fixed on " another element, it can directly on another element Or can also there is element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to To another element or may be simultaneously present centering elements.

Unless otherwise defined, all of technology used herein and scientific terminology are led with technology of the present utility model is belonged to The implication that the technical staff in domain is generally understood that is identical.It is simply in term used in the description of the present utility model herein The purpose of description specific embodiment, it is not intended that in limiting this utility model.Term as used herein "and/or" includes The arbitrary and all of combination of one or more related Listed Items.

Referring to shown in Fig. 1 and Fig. 2, the present embodiment relate to a kind of 3D printing pen 10.The 3D printing pen 10 includes heating head 100th, collet 200, fixed seat 300, connection siphunculus 400, circuit board 500 and the cap for brush 700.

Referring to shown in Fig. 1 and Fig. 3, the heating 100 has charging aperture 110, discharging opening 120 and tapping channel 130, The charging aperture 110 and the discharging opening 120 are communicated in the tapping channel 130, and the charging aperture 110 is used for and feed Device is connected, and the length of the tapping channel 130 is 15-30mm.The heating 100 has one end of the charging aperture 110 With fixing groove 140, the charging aperture 110 is communicated in the connection siphunculus 400 and passes through fixing groove 140.

In the present embodiment, above-mentioned heating 100 can adopt ceramic or high temperature resistant plastic material（It can also be gold Category plus the composite wood of insulation）Heating 100, with the heating wire and NTC that internal resistance is 1.8-2 ohms in heating 100（Internal resistance is 47K ohms, precision is 1% temperature control critesistor）Part.

Referring to shown in Fig. 1 and Fig. 3, the collet 200 is set in the company of the fixed seat 300 and the heating 100 Connect on the shell at place and away from ceramic head heating wire main body, heating 100 is fixed in the fixed seat 300, and the heating 100 end protrudes from the collet 200, and the cap for brush 700 is set in the outside of the collet 200.

Above-mentioned collet 200 can make collet 200 using exotic material.In the present embodiment, it is described heat-insulated Set 200 is made up of 30% glass fibre of mass ratio with 70% nylon, it is also possible to other high temperature resistants and the coefficient of heat conduction is low Material make.Collet 200 can meet general insulation requirement, and we can also fill in the content space of collet 200 Nano heat-insulating insulation material wraps up one layer and sends the heat-insulated soft felt of base on ceramic head 100, and collet 200 is then put again, can be with Obtain more preferable effect of heat insulation.

Above-mentioned nano heat-insulating insulation material is the green wood being derived by the space technology for spacecraft insulation Material, with waterproof, fire prevention, anti-corrosion is wear-resisting, various advantages such as insulation, the newest nano ceramics technology of the materials application, heat-insulated Insulating efficiency is above-mentioned to send the heat-insulated soft felt of base to be the most ripe flexible ultra high efficiency insulation product of current technique in the world up to 90%, With remarkable heat-proof quality, extremely low heat conductivity, low-expansion coefficient, low heat shrinkage.

Shown in Figure 9, the fixed seat 300 has draw-in groove 310, and the heating 100 has one end of charging aperture 110 It is fastened in the draw-in groove 310, so that the heating 100 is connected with the fixed seat 300.

Referring to shown in Fig. 1 and Fig. 8, the outer wall of the fixed seat 300 has the fin 320 of multiple protrusions, multiple described The order of fin 320 is arranged, and has interval between the adjacent fin 320.Fin 320 can be high temperature resistant plastic cement or Metal material, has connection siphunculus 400, it is possible to use carry out the conduction of heat of self-heating 100 to 3D in the inwall of the fixed seat 300 The plastic cement wire rod for printing pen is preheated, and improves the efficiency of heating surface of leading portion heating 100.

Above-mentioned fixed seat 300 can be using high temperature resistant plastic cement or fixed seat 300 made by metal material.In the present embodiment In, the fixed seat 300 and fin 320 are made up of 30% glass fibre of mass ratio with 70% nylon.

Shown in Figure 9, the connection siphunculus 400 is located at the heating between 100 and the fixed seat 300, described One end of connection siphunculus 400 is fastened in the fixing groove 140 and is communicated in the charging aperture 110, and the other end is fastened on described In draw-in groove 310 and for connecting the feeding device.The internal diameter of the connection siphunculus 400 is 1.5-2.5mm, and external diameter is 3.5- 4.5mm, length is 20-25mm.In the present embodiment, the internal diameter of the connection siphunculus 400 is preferably 2mm, and external diameter is preferably 4mm, length is preferably 23.6mm.

Above-mentioned connection siphunculus 400 can adopt high temperature resistance super teflon tube.Teflon pipe is widely used in various harsh streams The conveying of body.Life-time service can be worked under cryogenic temperature and not crisp in the range of -80 DEG C -+280 DEG C using temperature range Change, do not melt at high temperature.Prominent non-stick resistance to bond is excellent, and inside pipe wall does not adhere to colloid and chemicals, therefore will not be Schmutzband is formed in pipe.Excellent electrical insulation capability Teflon is height non-polar material, with good dielectric properties, resistance Greatly, dielectric constant is 2.0 or so.

Referring to shown in Fig. 2 and Fig. 7, the circuit board 500 is connected in the fixed seat 300 and by connecting wire and institute The electrical connection of heating 100 is stated, connecting wire includes the primary lead foot 600 of 2 NTC temperature resistances（Thin copper wire）With 2 heating wires Wire 610（Molybdenum filament）.Circuit board 500 can be made using PCB.Primary lead foot 600 and heating wire wire 610 are four soft gold Category material is made, and primary lead foot 600 and heating wire wire 610 connect the heat generating components of heating 100 with circuit board 500, because For fixed seat 300 with heating head assembly 100 and collet 200 be permanent bayonet socket fixing assembling, assemble after its position have only One property, fixed seat 300 and circuit board 500 are non-steady fixing assemblings, can be have slight angle activity change, to coordinate nib Central campus pair；After collet 200 loads the cap for brush 700, the heat insulating strip 720 in the cap for brush can automatically by the discharging of hot 100 The front opening center of the 110 centering caps for brush of mouth.

Referring to shown in Fig. 1-Fig. 3, the above-mentioned cap for brush 700（The cap for brush 700 of 3D printing pen 10）With including housing 710, heat-insulated Bar 720 and protection block 730.

Referring to shown in Fig. 2 and Fig. 3, in the present embodiment, the outer wall of the housing 710 is in arc surfaced.The housing 710 Outer wall is gradually narrowed by one end of the described first opening 711 to one end of the second opening 712 so that the containing cavity is in semielliptical Body.

The housing 710 has containing cavity, the first opening 711 and the second opening 712, first opening 711 and institute State the second opening 712 and be communicated in the containing cavity,

Referring to shown in Fig. 4 and Fig. 6, the opening size of first opening 711 is big compared with the size of the described second opening 712. First opening 711 is 712 relative and rounded with the described second opening, along the cross section of the housing 710, described the One opening 711 is homocentric with the described second opening 712.

The heating 100 is located at the accommodating intracavity, and the end of the heating 100 passes second opening 712 And protrude from the housing 710.

It is shown in Figure 4, it is described second opening 712 edge at least provided with two it is described protection blocks 730, when the heating 100 when entering the accommodating intracavity, and the end of the heating 100 can protrude from the protection block 730.In the present embodiment In, the quantity of the protection block 730 is two, and two protection blocks 730 are oppositely arranged.It can be appreciated that the number of protection block 730 Measure to can also be multiple, such as three, four.Multiple protection blocks 730 are uniformly distributed in the end of heating 100.

Shown in Figure 4, the cap for brush 700 has at least two buckles 740 along the edge of the first opening 711, and buckle 740 is used In be connected with the body for printing pen so that the cap for brush 700 is connected on printing pen, now, heating 100, connection siphunculus 400, admittedly Reservation 300 and circuit board 500 are embedded inside the cap for brush 700, be will not fall off, you can realize the material extrusion of 3D printing pen.

The cap for brush 700 of above-mentioned 3D printing pen 10, be also provided with protect block 730, second opening 712 edge at least provided with Two protection blocks 730, when heating 100 enters accommodating intracavity, the end of heating 100 can protrude from protection block 730, lead to The setting of overprotection block 730 has been effectively isolated the direct exposed of heating 100 end, efficiently avoid heating 100 Contact of the end with user, is not easy to scald user.

Shown in Figure 6, the inwall of the containing cavity is provided with multiple heat insulating strips 720 so that the heating 100 There is interval between the inwall of outer wall and the containing cavity.The heat insulating strip 720 is on the inwall of the containing cavity by described One end of two openings 712 to one end of the described first opening 711 extends.The heat insulating strip 720 uniformly divides in the accommodating intracavity Cloth.

It is shown in Figure 4, there are multiple louvres 713 on the housing 710, the louvre 713 is communicated in the appearance Put chamber.

Above-mentioned 3D printing pen 10, the heating 100 that it has has charging aperture 110, discharging opening 120 and tapping channel 130, charging aperture 110 and discharging opening 120 are communicated in tapping channel 130, and tapping channel 130 is main heating region, temperature Can be controllable in 50 DEG C to 210 DEG C intervals, charging aperture 110 is used to be connected with feeding device, and the length of tapping channel 130 is 15-30mm, when the length of heating 100 is 15-30mm, effectively can heat collodion silk under 5V voltages, because there is length to be 20- Used as the preheated zone of conduction of heat, collodion silk first passes through preheating zone to the connection siphunculus 400 of 25mm during wire feed, when hank knotting is entered After main heating region, be just easy to be melted, the efficiency of heating surface is very high, nib in continuous wire feed can quick wire feed, be difficult to block up Head, efficiently avoid the plug wire problem of heating 100.In addition, the cap for brush 700 includes housing 710 and heat insulating strip 720；Housing 710 have containing cavity, the first opening 711 and the second opening 712, and the first opening 711 is communicated in accommodating with the second opening 712 Chamber, the inwall of containing cavity is provided with multiple heat insulating strips 720, when heating 100 enters accommodating intracavity, the outer wall of heating 100 with There is interval between the inwall of containing cavity.By the setting of above-mentioned heat insulating strip 720 so that heating shape between 100 and inwall At interval, it is to avoid the heating of high temperature contact between 100 and the inwall of housing 710 and causes the generation high temperature of housing 710 so that The above-mentioned cap for brush 700 of 3D printing pen 10 is not easy to scald one's hand.

Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, the scope of this specification record is all considered to be.

Embodiment described above only expresses several embodiments of the present utility model, and its description is more concrete and detailed, But therefore can not be interpreted as the restriction to this utility model the scope of the claims.It should be pointed out that common for this area For technical staff, without departing from the concept of the premise utility, some deformations and improvement can also be made, these all belong to In protection domain of the present utility model.Therefore, the protection domain of this utility model patent should be defined by claims.

Claims (9)

1. a kind of 3D printing cap for brush, it is characterised in that including housing and heat insulating strip；

The housing has containing cavity, the first opening and the second opening, and first opening is connected with the described second opening In the containing cavity, the opening size of first opening is big compared with the size of the described second opening, and described first is open for supplying Heating head passes through and into the accommodating intracavity, and the end of the heating head can pass second opening to protrude from State housing；

The inwall of the containing cavity is provided with multiple heat insulating strips, described to add when the heating head enters the accommodating intracavity There is interval between the inwall of the outer wall of hot head and the containing cavity.

2. the 3D printing cap for brush according to claim 1, it is characterised in that also including protection block, second opening Edge is at least provided with two protection blocks, when the heating head enters the accommodating intracavity, the end energy of the heating head Enough protrude from the protection block.

3. the 3D printing cap for brush according to claim 2, it is characterised in that the quantity of the protection block is two, two The protection block is oppositely arranged.

4. the 3D printing cap for brush according to claim 1-3 any one, it is characterised in that have on the housing multiple Louvre, the louvre is communicated in the containing cavity.

5. the 3D printing cap for brush according to claim 1-3 any one, it is characterised in that first opening with it is described Second opening is relative and rounded, and along the cross section of the housing, first opening is homocentric with the described second opening.

6. the 3D printing cap for brush according to claim 5, it is characterised in that the outer wall of the housing is in arc surfaced.

7. the 3D printing cap for brush according to claim 6, it is characterised in that the outer wall of the housing is open by described first One end to second opening one end gradually narrow so that the containing cavity be in semiellipsoid.

8. the 3D printing cap for brush according to claim 7, it is characterised in that inwall of the heat insulating strip in the containing cavity On from described second one end being open to described first opening one end extend.

9. the 3D printing cap for brush according to claim 8, it is characterised in that the heat insulating strip is uniform in the accommodating intracavity Distribution.