CN2308444Y

CN2308444Y - Plastic cement melting gun

Info

Publication number: CN2308444Y
Application number: CN 97214082
Authority: CN
Inventors: 徐志农; 方明
Original assignee: Zhejiang Hetian Plastics And Electronic Manufacture Co ltd; Zhejiang University ZJU
Current assignee: Zhejiang Hetian Plastics And Electronic Manufacture Co ltd; Zhejiang University ZJU
Priority date: 1997-04-11
Filing date: 1997-04-11
Publication date: 1999-02-24
Anticipated expiration: 2007-04-11

Abstract

The utility model relates to a hot melt adhesive gun, comprising a casing, a Conic nozzle, an aluminum barrel, a melt adhesive rod heating element, a melt adhesive rod feeding element, etc., wherein, the radial section of the spreader of the aluminum barrel is divided into two discontinuous hollows to improve the heating efficiency of the melt adhesive rod and reduce the flow resistance of adhesive; the heating element is tightly matched with the aluminium barrel to give full play to the heating efficiency; the feeding part adopts a single return spring slide block mechanism, the melt adhesive rod is locked at a radial direction, the melt adhesive rod moves at an axial direction, and the feeding effect is favorable; the single one-way shoulder faces of a seal rubber barrel and the aluminium barrel are tightened at a radial direction and pressed at an axial direction to prevent the reflux of the adhesive; besides, the spring of the one-way valve in the conic nozzle forms a drum shape to prevent the glue dropping phenomenon caused by the uneven compaction of ball valves.

Description

Melting glue gun

The utility model relates to liquid or other flowing materials is sprayed, and pour into or allow it flow to the device of surface of the work, be a kind of melting glue gun that can spray fluid.

Melting glue gun directly sprays a fluid into and need seal between the workpiece of sealing, and be widely used in each industrial department with after fused bar being melted in melting glue gun.But there is following subject matter in common in the market melting glue gun:

1. adopt two semicircle aluminium flakes or nickel plating copper sheet to clamp PTC heating pottery as the heating sheet, the fused bar in the heating aluminum barrel, because it and aluminum barrel endoporus are difficult to accomplish to closely cooperate, heating efficiency can not be given full play to;

2. to divide flow cone be the single, rectangular piece cross section to melting glue gun aluminum barrel inner chamber, and during wedging glue rod center, to contact heating surface very little with glue rod inner core, and the efficiency of heating surface is not high;

3. to advance what adopt in the parts be dual reset spring double rocker mechanism to fused bar, because feed mechanism is done circular motion, back-moving spring is many again, easy slippage when sending to;

4. single diclinic mouth sealing is adopted in the sealing between caulking gum tube and the aluminum barrel, adds the spring banding, because tightening force is limited, easily causes the glue of fusing to flow backwards, and can't normally use melting glue gun.

The purpose of this utility model is: design and a kind ofly can make full use of heating, efficiency of heating surface height, melting glue gun easy to use, can solve the problem that exists in the background technology field.

To achieve the above object of the invention, the technical scheme that the utility model adopted is: it comprises housing, Conic nozzle, and aluminum barrel, the fused bar heater block, fused bar is sent parts etc. to.Aluminum barrel is cylindrical near its axial cross section of inner chamber of one section of Conic nozzle, and then its axial cross section of one section inner chamber is the shunting taper, its radial section is two discontinuous arc surfaces, the height in cross section is reduced into circular cross-section successively gradually, its axial cross section of aluminum barrel near one section of rear end is cylindrical, on the aluminum barrel external cylindrical surface away from Conic nozzle one end, some annular tongues are arranged, after closely cooperating with the endoporus of caulking gum tube, the end face of aluminum barrel is close on the inner face of caulking gum tube, and the outer shoulder face of aluminum barrel of close Conic nozzle and the outer shoulder face of caulking gum tube are stuck in the enclosure slot locatees.Fused bar heater block: comprise being contained under the aluminum barrel in the stomidium that the PTC heating pottery by two stainless steels heating sheets clamp through flat clamp, is fastened in the hole with the heat conduction wedge.Fused bar is sent parts to: comprising can be around the plate machine of axis hole rotation, one end and plate machine are hinged, the other end and the hinged connecting rod of block tongue, block tongue and rotating ring are hinged, and the boss of block tongue can withstand on the external cylindrical surface of fused bar, and drive rotating ring gathering sill translation vertically feeding forward.

The utility model is compared with background technology, and the useful effect that has is:

1. to divide the flow cone radial section be two discontinuous circular sections to the aluminum barrel of Cai Yonging, when inserting fused bar, divides flow cone wedging fused bar center, makes fused bar center heated contact surface bigger, and efficiency of heating surface height reduces the glue flow resistance;

2. fused bar heater block and aluminum barrel closely cooperate, and give full play to heating efficiency;

3. fused bar is sent parts to and is adopted single back-moving spring slider-rocker mechanism, and fused bar is radially locked, and moves axially, and sends to effective;

4. adopt single unidirectional shoulder face diameter to tightening up between caulking gum tube and aluminum barrel, axial compression prevents glue refluence phenomenon.

In addition, also having the spring of check valve in the Conic nozzle is cydariform, and the not parallel institute that can eliminate both ends of the spring causes ball valve to compress inhomogeneous and causes and drip a glue phenomenon, and power switch and indicator lamp are housed, and can make things convenient for the break-make power supply, uses easy to operate.

Fig. 1, structure principle chart of the present utility model;

The radially A-A profile of Fig. 2, aluminum barrel shunting taper.

Below in conjunction with accompanying drawing,, provide details of the present utility model by description to embodiment.

As shown in Figure 1, fused bar 14 is inserted from the melting glue gun rear portion, through rotating ring 12, caulking gum tube 8 is in the cylindrical hole of aluminum barrel 3 rear ends, and the axial cross section of aluminum barrel 3 front and back ends is cylindrical, and middle one section is the shunting taper, its radial section of shunting taper is two

discontinuous arc surfaces

19,20, as shown in Figure 2, the height in cross section dwindles backward gradually from Conic nozzle 1 one ends, is circular cross-section until aluminum barrel 3 rear ends.The PTC heating pottery 5 that is clamped by two stainless steel heating sheets 18 is housed in the hole of aluminum barrel 3 lower ends, insulate with polytetrafluoroethylene film, pad is gone up flat clamp 6 below, is fastened in the hole with heat conduction wedge 4, and lead 7 is connected with the terminal of stainless steel heating sheet.Connect power supply, with heater block the fused bar end in the aluminum barrel 3 is melted, constantly pull trigger 9, through connecting rod 10, block tongue 11, the boss of block tongue 11 can withstand on the external cylindrical surface of fused bar 14 on one side, drive on one side rotating ring 12 with fused bar constantly forward translation carry out the feeding process, the glue that has melted the fused bar end, through a minute flow cone, interior cylindrical space, reach certain pressure after, wash the check valve of Conic nozzle 1 open, outwards constantly spray glue, 13 is back-moving spring, when plate machine 9 rotates, plate machine 9 is resetted.

The spring of check valve is the little barrel-shaped spring broad in the middle 2 in two in the Conic nozzle 1, and the not parallel ball valve that causes that can eliminate both ends of the spring compresses inhomogeneous and a glue phenomenon that cause.Power switch 17 is housed on gunman's handle, and lead is through current-limiting resistance 16, and sending and receiving light indicator tube 15 its objective is break-make and the indication of being convenient to power supply, handled easily.

Claims

1. melting glue gun, it comprises housing, Conic nozzle, aluminum barrel, the fused bar heater block, fused bar is sent parts etc. to, it is characterized in that:

1) aluminum barrel [3] is cylindrical near its axial cross section of inner chamber of [1] one section of Conic nozzle, and then its axial cross section of inner chamber at one section at rear portion is the shunting taper, its radial section is two discontinuous arc surfaces [19], [20], the height in cross section is reduced into circular cross-section successively gradually, its axial cross section of aluminum barrel near one section of rear end is cylindrical, on aluminum barrel [3] external cylindrical surface away from Conic nozzle [1] one end, some annular tongues [A] are arranged, after closely cooperating with the endoporus of caulking gum tube [8], the end face of aluminum barrel [3] is close on the inner face [B] of caulking gum tube [8], and the outer shoulder face of aluminum barrel [3] of close Conic nozzle [1] and the outer shoulder face of caulking gum tube [8] are stuck in the enclosure slot locatees;

2) fused bar heater block: comprise being contained under the aluminum barrel [3] in the stomidium that the PTC heating pottery [5] by two stainless steels heating sheets [18] clamp through flat clamp [6], is fastened in the hole with heat conduction wedge [4];

3) fused bar is sent parts to: comprising can be around the plate machine [9] of axis hole rotation, one end and plate machine [9] are hinged, the other end and the hinged connecting rod [14] of block tongue [11], block tongue [11] is hinged with rotating ring [12], the boss of block tongue [11] can withstand on the external cylindrical surface of fused bar [14], and drives rotating ring [12] gathering sill translation vertically feeding forward.

2. melting glue gun according to claim 1 is characterized in that: the spring of check valve is the little barrel-shaped spring broad in the middle in two [2] in the Conic nozzle [1].

3. melting glue gun according to claim 1 is characterized in that: power switch [17] is housed on gunman's handle, and lead is through current-limiting resistance [16], sending and receiving light indicator tube [15].