CN216605882U

CN216605882U - External hand-held glue gun

Info

Publication number: CN216605882U
Application number: CN202122908896.1U
Authority: CN
Inventors: 程曦
Original assignee: Wuhan Boxing Tongchuang Technology Co ltd
Current assignee: Wuhan Boxing Tongchuang Technology Co ltd
Priority date: 2021-11-24
Filing date: 2021-11-24
Publication date: 2022-05-27
Anticipated expiration: 2031-11-24

Abstract

The application discloses handheld glue gun of circumscribed, relate to auto-parts processing field, it includes the rifle body and sets up in the nozzle of rifle body tip, the nozzle includes the cylinder body and sets up in the play of cylinder body tip glues the rifle head, goes out to glue the rifle head and has seted up the glue spout mouth, and form hybrid channel between the cylinder body, the play glue rifle head is provided with the subassembly that shelters from that is used for sheltering from the glue spout mouth in glue spout mouthful week side, and is provided with and is used for the adjustment to shelter from the adjustment mechanism that the subassembly sheltered from the degree to the glue spout mouth. This application has the effect of being convenient for adjust and spouting gluey speed, is favorable to promoting to spout gluey speed and precision.

Description

External hand-held glue gun

Technical Field

The application relates to the field of auto-parts processing, in particular to an external handheld glue gun.

Background

The automotive interior board consists of a substrate and a skin, wherein the skin needs to be pasted on the surface of the substrate by hot melt adhesive, so that a hot melt adhesive block is usually melted into molten hot melt adhesive by a melt adhesive device in the processing process of the automotive interior board, and then the hot melt adhesive is sprayed on the surface of the substrate by an external handheld glue spraying gun.

Chinese patent No. CN201711182431.4 in the related art proposes a glue gun, which comprises a gun body and a vent pipe interface, wherein the gun body is respectively provided with a spray head, a glue gun switch and a handle, and the vent pipe interface is arranged on the handle. The nozzle comprises a cylinder body and a glue outlet gun head, the cylinder body is hollow, the glue outlet gun head penetrates through the hollow cylinder body, a glue inlet pipe and a steam inlet pipe are arranged on the cylinder body, and a nozzle hole is formed in the front of the glue outlet gun head; a glue channel is communicated between the glue inlet pipe and the glue outlet gun head; a gap is reserved between the glue outlet gun head and the hollow cylinder body to form a steam channel which is communicated with the steam inlet pipe. Glue is input from the glue inlet pipe, steam is introduced from the steam inlet pipe, under the action of air pressure, the glue is sprayed out from the glue outlet gun head through the glue channel, high-temperature and high-pressure steam is sprayed out through the steam channel, and the glue and the steam are uniformly mixed and are sprayed out from the nozzle holes.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: because the glue amount entering the glue spraying gun is constant, if the glue spraying speed needs to be changed, the steam pressure can be changed, but the glue spraying speed can be changed greatly due to the small change of the steam pressure, the required speed can be adjusted only by multiple attempts of production personnel, and the operation arrangement for adjusting the glue spraying speed is complex.

SUMMERY OF THE UTILITY MODEL

In order to improve the problem that is not convenient for adjust and spouts gluey speed, this application provides a handheld gluey rifle of spouting of circumscribed.

The application provides a pair of handheld glue gun of external connection adopts following technical scheme:

the utility model provides a handheld glue gun of spouting of circumscribed, includes the rifle body with set up in the nozzle of rifle body tip, the nozzle include the cylinder body with set up in the play gluey rifle head of cylinder body tip, go out gluey rifle head seted up spout gluey mouth, and with form mixing passage between the cylinder body, go out gluey rifle head in it is used for sheltering from to spout gluey mouthful week side be provided with spout gluey mouthful shelters from the subassembly, and is provided with and is used for the adjustment it is right to shelter from the subassembly spout gluey mouthful adjustment mechanism who shelters from the degree.

Through adopting above-mentioned technical scheme, before spouting gluey to the base plate, shelter from the subassembly through adjustment mechanism adjustment earlier and shelter from the degree to spouting gluey mouth, and then can adjust the cross section size of the passageway that can supply the heat glue to pass, can adjust the hot melt adhesive and leave the handheld speed of spouting gluey rifle that spouts of external, need not to adjust steam pressure and only need adjust the degree of opening that spouts gluey mouth to this realizes being convenient for to adjust the effect of spouting gluey speed, is favorable to promoting the speed and the precision of spouting gluey.

Optionally, the shielding assembly comprises a flow guide pipe arranged on the end face of the glue discharging gun head, a plurality of shielding plates hinged to the inner wall of the flow guide pipe, and a sealing element connected between the adjacent shielding plates; the honeycomb duct encircle set up in spout the week side of glue mouthful, and inside is provided with the heating wire, and is a plurality of the free end of shielding plate is close to each other or is kept away from.

Through adopting above-mentioned technical scheme, when the degree of sheltering from of spouting gluey mouth is adjusted to needs, order about a plurality of shielding plates synchronous oscillation through adjustment mechanism, the free end that can drive a plurality of shielding plates is close to each other or keeps away from, and the sealing member is used for sealing the clearance between the adjacent shielding plate simultaneously, can adjust the shielding plate to the degree of sheltering from of spouting gluey mouth to the cross section size of the passageway that can supply the heat to melt and glue and pass is adjusted.

Optionally, the sealing element includes a flexible metal sheet, and two ends of the flexible metal sheet are respectively connected to two adjacent shielding plates.

Through adopting above-mentioned technical scheme, because the metal film can take place deformation, both can adapt to the swing of shielding plate, also can reduce the hot melt adhesive that passes by the clearance between two adjacent shielding plates, be of value to accurately regulate and control and spout gluey speed.

Optionally, the adjusting mechanism includes a push ring movable in the draft tube, a transmission member for driving the push ring to move, and a return elastic member for driving the shielding plates to return, and the push ring is abutted to the plurality of shielding plates; when the reset elastic piece is in a free state, the free ends of the shielding plates are gathered together.

By adopting the technical scheme, when the plurality of shielding plates need to be driven to synchronously swing, the driving ring is driven to be close to the glue discharging gun head along the length direction of the flow guide pipe through the driving part, meanwhile, the driving ring drives the plurality of shielding plates to gradually swing, the free ends of the shielding plates are far away from each other, and the reset elastic part is also in a stretching or compressing state, so that the size of the cross section of a channel through which heat-supplying molten glue can pass can be enlarged, and the glue spraying speed is reduced; order about the promotion ring through the driving medium and keep away from out gluey rifle head gradually, the elastic component that resets gradually and order about the shielding plate through elastic force and reset the swing, the free end of shielding plate draws close gradually simultaneously, can reduce the cross section size of the passageway that can supply heat melten gel to pass to increase and spout gluey speed, the easy operation of gluey speed is spouted in the regulation and control.

Optionally, the transmission member includes a threaded ring provided with an external thread, an internal thread adapted to the threaded ring is provided on the inner wall of the flow guide pipe, and the end of the threaded ring is connected to the push ring.

Through adopting above-mentioned technical scheme, when needs order about the promotion ring activity in the honeycomb duct, rotate in the honeycomb duct through ordering about the screw ring, can drive the promotion ring and remove along the length direction of honeycomb duct in step, and the screw ring does not occupy the inside space of honeycomb duct basically.

Optionally, the honeycomb duct with go out gluey rifle head detachable connection.

Through adopting above-mentioned technical scheme, can regularly demolish the honeycomb duct, both can change or clear up the honeycomb duct, be of value to the regulation and control accurately and spout gluey speed, also can be applicable to and need not the regulation and control to spout the operating mode of gluey speed.

Optionally, a connecting structure is arranged between the flow guide pipe and the glue discharging gun head; the connecting structure comprises a connecting ring fixedly sleeved on the flow guide pipe and a connecting screw rod penetrating through the connecting ring, a plurality of threaded holes matched with the threads of the connecting screw rod are formed in the end face of the glue outlet gun head, one side of the connecting ring is abutted to the glue outlet gun head, and the other side of the connecting ring is abutted to the nut of the connecting screw rod.

By adopting the technical scheme, when the honeycomb duct needs to be installed, the connecting ring is firstly attached to the glue outlet gun head, then the end part of the connecting screw rod is driven to penetrate through the connecting ring and is assembled in the threaded hole in a threaded manner until the connecting ring is abutted against the glue outlet gun head, and the nut of the connecting screw rod is abutted against the connecting ring, so that the installation of the honeycomb duct can be completed; when the honeycomb duct needs to be dismantled, the connecting screw rod can be screwed out of the threaded hole, the honeycomb duct is easy to disassemble and assemble, and the honeycomb duct is convenient to replace or clean regularly.

Optionally, a sealing rubber pad is arranged on the side face, close to the glue outlet gun head, of the connecting ring.

By adopting the technical scheme, the sealing rubber pad can fill the gap between the flow guide pipe and the glue outlet gun head, and the hot melt adhesive leaked from the gap is reduced.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the threaded ring is driven to rotate, the pushing ring is driven to be close to or far away from the glue outlet gun head, the shielding plates can be driven to swing, the free ends of the shielding plates are mutually far away or close to each other, the size of the cross section of a channel through which hot melt glue can pass can be adjusted, the speed of the hot melt glue leaving the external handheld glue spraying gun can be adjusted, and the effect of conveniently adjusting the glue spraying speed is achieved;

2. the metal film is connected between two adjacent shielding plates, so that the impact of the hot melt adhesive can be borne, the hot melt adhesive which passes through a gap between two adjacent shielding plates can be reduced, and the accurate regulation and control of the adhesive spraying speed are facilitated;

3. through go-between and connecting screw be convenient for the split or connect the honeycomb duct and go out gluey rifle head, both can change or clear up the honeycomb duct, be of value to the regulation and control of accuracy and spout gluey speed, also can be applicable to the operating mode that need not regulation and control and spout gluey speed.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is a partial sectional structural schematic diagram of an embodiment of the present application.

Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.

FIG. 4 is an exploded view of a shield assembly, an adjustment mechanism, and a connection structure according to an embodiment of the present application.

Reference numerals: 1. a gun body; 11. an air inlet pipe; 12. feeding a rubber tube; 2. a nozzle; 21. a cylinder body; 22. glue discharging gun heads; 221. a threaded sleeve; 222. spraying a glue opening; 23. a mixing channel; 3. a shielding component; 31. a flow guide pipe; 311. a groove; 312. rotating the rod; 32. a shielding plate; 33. a metal flexible sheet; 4. an adjustment mechanism; 41. a push ring; 42. a threaded ring; 421. a connecting rod; 43. a torsion spring; 5. a connecting structure; 51. a connecting ring; 511. sealing the rubber pad; 52. and connecting the screw rod.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses handheld glue gun of circumscribed. Referring to fig. 1, the handheld glue gun of circumscribed includes the rifle body 1, set up in the nozzle 2 of the tip of the rifle body 1, set up intake pipe 11 and the rubber tube 12 on the rifle body 1, and nozzle 2 includes the cylinder body 21 with rifle body 1 integrated into one piece and sets up in the play glue rifle head 22 of cylinder body 21 tip, and the tip welding that goes out glue rifle head 22 and be close to cylinder body 21 has thread bush 221, and the tip of cylinder body 21 is seted up the external screw thread with thread bush 221 screw-thread adaptation.

Referring to fig. 2 and 3, the glue outlet gun head 22 is provided with a glue spraying port 222 with a circular cross section, and a tapered mixing channel 23 is formed between the glue spraying port and the cylinder 21. The glue outlet gun head 22 is provided with a shielding component 3 for shielding the glue spraying port 222 on the periphery of the glue spraying port 222, and is provided with an adjusting mechanism 4 for adjusting the shielding degree of the shielding component 3 on the glue spraying port 222.

Before spouting gluey to the base plate, shelter from subassembly 3 through adjustment mechanism 4 adjustment earlier and shelter from the degree to spouting gluey mouth 222, and then can adjust the cross section size of the passageway that can supply the heat glue to pass, can adjust the hot melt adhesive and leave the handheld speed of spouting gluey rifle of external, need not to adjust steam pressure and only need adjust the degree of opening of spouting gluey mouth 222 to this realizes being convenient for to adjust spouts gluey speed's effect, is favorable to promoting the speed and the precision of spouting gluey.

Referring to fig. 3 and 4, the shielding assembly 3 includes a flow guide tube 31 disposed on the end surface of the glue gun head 22, a plurality of shielding plates 32 hinged to the inner wall of the flow guide tube 31, and a sealing member connected between adjacent shielding plates 32. The fluid guide tube 31 is cylindrical and is disposed around the glue spraying opening 222, and the heating wire is disposed inside the fluid guide tube. The shielding plates 32 are arc-shaped plates, in the embodiment of the present application, four shielding plates 32 are provided, and the four shielding plates 32 are circumferentially arranged at intervals along the inner circumferential wall of the draft tube 31.

Referring to fig. 3 and 4, four grooves 311 are formed in the inner wall of the flow guide tube 31, rotating rods 312 are welded in the four grooves 311, the axes of the rotating shafts are perpendicular to the axis of the flow guide tube 31, the axes of the two adjacent rotating rods 312 are perpendicular to each other, the axes of the four rotating rods 312 are coplanar, and the end portions, away from the cylinder body 21, of the four baffle plates 32 are respectively sleeved on the four rotating rods 312, so that the baffle plates 32 swing around the axes of the rotating rods 312, and the free ends of the four baffle plates 32 are close to or far away from each other. The sealing element comprises a flexible metal sheet 33, two ends of the flexible metal sheet 33 are respectively connected to the two adjacent shielding plates 32 in a welding mode, and the flexible metal sheet 33 can be made of flexible steel, stainless steel, aluminum materials, special alloys and the like.

When the degree of sheltering from of spouting gluey mouth 222 needs to be adjusted, drive about a plurality of shielding plates 32 synchronous oscillation through adjustment mechanism 4, can drive the free end of a plurality of shielding plates 32 and be close to each other or keep away from, but simultaneously the clearance of metal flexible sheet 33 shutoff between adjacent shielding plate 32 of deformability can adjust the degree of sheltering from of shielding plate 32 to spouting gluey mouth 222 to the cross section size of the passageway that can supply hot melt adhesive to pass is adjusted.

Referring to fig. 3 and 4, the adjusting mechanism 4 includes a push ring 41 movable in the flow guide tube 31, a transmission member for driving the push ring 41 to move, and a return elastic member for driving the shutter 32 to return. The push ring 41 is annular and movable in the axial direction of the draft tube 31, and the push ring 41 abuts against the inner walls of the plurality of shielding plates 32. The driving medium is including seting up the screw ring 42 of external screw thread, and the internal thread with screw ring 42 adaptation is seted up to the inner wall of honeycomb duct 31, and the tip welding that screw ring 42 is close to cylinder body 21 has connecting rod 421, and connecting rod 421 is close to the tip of cylinder body 21 and promotes ring 41 welding, and the tip salient in honeycomb duct 31 of screw ring 42 keeping away from cylinder body 21.

Referring to fig. 3 and 4, the elastic return element is a torsion spring 43 sleeved on the rotating rod 312, one end of the torsion spring 43 is connected to the inner wall of the recess 311, and the other end is connected to the arc-shaped plate. When the torsion spring 43 is in a free state, the free ends of the plurality of shielding plates 32 are gathered each other, and the cross-sectional size of the passage through which the hot melt adhesive can pass is minimized.

When the shielding plates 32 need to be driven to synchronously swing, the precursor rotates the threaded sleeve 221 and drives the pushing ring 41 to be close to the glue gun head 22 along the length direction of the flow guide pipe 31, meanwhile, the pushing ring 41 pushes the shielding plates 32 to gradually swing, the free ends are far away from each other, and the torsion spring 43 is also in a stretching state, so that the cross section size of a passage through which hot melt glue can pass can be enlarged, and the glue spraying speed is reduced; firstly, the threaded sleeve 221 is driven to rotate, the pushing ring 41 is driven to gradually keep away from the glue gun head 22, the torsion spring 43 gradually resets and drives the shielding plate 32 to reset and swing through elastic force, and meanwhile, the free end of the shielding plate 32 gradually draws close, so that the size of the cross section of a channel through which heat supply molten glue can pass can be reduced, the glue spraying speed is increased, and the operation of regulating and controlling the glue spraying speed is simple.

Referring to fig. 3 and 4, in order to facilitate the detachment and installation of the draft tube 31, a connection structure 5 is disposed between the draft tube 31 and the end surface of the glue gun head 22 away from the cylinder 21, and the connection structure 5 includes a connection ring 51 fixedly sleeved on the draft tube 31 by welding and a connection screw 52 penetrating through the connection ring 51. The number of the connecting screws 52 is six, the six connecting screws 52 are arranged at equal intervals along the circumferential direction of the outer circumferential wall of the draft tube 31, the length direction of the connecting screws 52 is parallel to the axial direction of the draft tube 31, and a plurality of threaded holes matched with the threads of the connecting screws 52 are formed in the end face of the glue discharging gun head 22. One side of the connecting ring 51 is abutted against the glue gun head 22, and the other side is abutted against the nut of the connecting screw 52. In order to improve the sealing performance between the draft tube 31 and the glue gun head 22, a sealing rubber pad 511 is arranged on the side surface of the connecting ring 51 close to the glue gun head 22 in an adhering mode.

When the draft tube 31 needs to be installed, the connecting ring 51 is firstly attached to the glue outlet gun head 22, then the end of the connecting screw 52 is driven to penetrate through the connecting ring 51 and be assembled in the threaded hole in a threaded manner until the sealing rubber pad 511 is abutted against the glue outlet gun head 22 by the connecting ring 51, and the nut cap of the connecting screw 52 is abutted against the connecting ring 51, so that the installation of the draft tube 31 can be completed; when the honeycomb duct 31 needs to be disassembled, the connecting screw rod 52 is screwed out of the threaded hole, the honeycomb duct 31 is easy to disassemble and assemble, and the honeycomb duct 31 is convenient to replace or clean regularly. Meanwhile, the sealing rubber pad 511 can fill the gap between the guide pipe 31 and the glue outlet gun head 22, so that the hot melt glue leaked from the gap is reduced.

The implementation principle of the handheld glue gun of this application embodiment of an external connection formula is: before spraying glue on a substrate, if the glue spraying speed needs to be slowed down, the precursor enables the threaded sleeve 221 to rotate and drives the push ring 41 to be close to the glue outlet gun head 22 along the length direction of the flow guide pipe 31, meanwhile, the push ring 41 pushes the shielding plates 32 to gradually swing, the free ends are far away from each other, the metal film 33 is always blocked between every two adjacent shielding plates 32, and the torsion spring 43 is also in a stretching state, so that the cross section size of a channel through which heat supply molten glue can pass can be enlarged, and the glue spraying speed is slowed down;

if the glue spraying speed needs to be increased, the pioneer rotates the threaded sleeve 221 and drives the pushing ring 41 to be gradually far away from the glue outlet gun head 22, the torsion spring 43 is gradually reset and drives the shielding plates 32 to reset and swing through elastic force, meanwhile, the free ends of the shielding plates 32 are gradually closed, the metal film 33 is always plugged between every two adjacent shielding plates 32, the size of the cross section of a channel through which heat supply molten glue can pass can be reduced, the glue spraying speed is increased, the operation of regulating and controlling the glue spraying speed is simple, steam pressure does not need to be regulated, and the opening degree of the glue spraying opening 222 only needs to be regulated, so that the effect of regulating the glue spraying speed is realized, and the speed and the precision of glue spraying are favorably improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a handheld glue gun of spouting of circumscribed, includes the rifle body (1) and set up in nozzle (2) of the rifle body (1) tip, nozzle (2) include cylinder body (21) and set up in go out gluey rifle head (22) of cylinder body (21) tip, go out gluey rifle head (22) and seted up spout gum mouth (222), and with form mixing channel (23), its characterized in that between cylinder body (21): the glue outlet gun head (22) is provided with a shielding component (3) used for shielding the glue spraying opening (222) on the periphery of the glue spraying opening (222), and is also provided with an adjusting mechanism (4) used for adjusting the shielding degree of the shielding component (3) on the glue spraying opening (222);

the shielding assembly (3) comprises a guide pipe (31) arranged on the end face of the glue outlet gun head (22), a plurality of shielding plates (32) hinged to the inner wall of the guide pipe (31) and sealing pieces connected between the adjacent shielding plates (32);

the honeycomb duct (31) is arranged around the glue spraying opening (222), an electric heating wire is arranged in the honeycomb duct, and the free ends of the shielding plates (32) are close to or far away from each other;

the adjusting mechanism (4) comprises a pushing ring (41) which is movable in the flow guide pipe (31), a transmission piece for driving the pushing ring (41) to move and a reset elastic piece for driving the shielding plates (32) to reset, and the pushing ring (41) is abutted against the shielding plates (32);

when the elastic reset piece is in a free state, the free ends of the shielding plates (32) are gathered together.

2. The externally-connected hand-held glue gun according to claim 1, wherein: the sealing element comprises a flexible metal sheet (33), and two ends of the flexible metal sheet (33) are respectively connected to two adjacent shielding plates (32).

3. The externally-connected hand-held glue gun according to claim 1, wherein: the driving medium is including seting up threaded ring (42) of external screw thread, the inner wall of honeycomb duct (31) seted up with the internal thread of threaded ring (42) adaptation, the tip of threaded ring (42) with it connects to push away ring (41).

4. An external hand-held glue gun according to any one of claims 2 to 3, characterised in that: the draft tube (31) is detachably connected with the glue discharging gun head (22).

5. The externally-connected hand-held glue gun according to claim 4, wherein: a connecting structure (5) is arranged between the flow guide pipe (31) and the glue discharging gun head (22);

the connecting structure (5) comprises a connecting ring (51) fixedly sleeved on the guide pipe (31) and a connecting screw rod (52) arranged on the connecting ring (51) in a penetrating mode, the end face of the glue outlet gun head (22) is provided with a plurality of threaded holes matched with the threads of the connecting screw rod (52), one side of the connecting ring (51) is abutted to the glue outlet gun head (22), and the other side of the connecting ring is abutted to the nut of the connecting screw rod (52).

6. The externally-connected hand-held glue gun according to claim 5, wherein: and a sealing rubber pad (511) is arranged on the side surface of the connecting ring (51) close to the glue discharging gun head (22).