阅读说明：本技术 热熔胶枪 (Hot melt glue gun ) 是由 孙洪明 于 2020-12-19 设计创作，主要内容包括：本发明公开了一种热熔胶枪,包括有外壳体；外壳体内转动连接有内转动筒；内转动筒内活动安装有多个胶管；胶管前端固定连接有出胶锥头；内转动筒内壁成型有导向板；导向板上成型有导向斜槽；外壳体内转动连接有单向传动轴；外壳体内滑动连接有驱动板；胶管内壁成型有通槽；外壳体内连接有切换齿轮；外壳体下部滑动连接有切换板；切换板上端成型有联动板；联动板上设置有加热片；当切换板位于前方极限位置时,单向传动轴转动使得最下方的胶棒向前进给；当切换板位于后方极限位置时,单向传动轴转动使得内转动筒转动。本发明能够加热胶棒进行粘黏；能够安装容纳多种颜色的胶棒；出胶锥头能够前后移动,使用简单方便,防止胶头污染。(The invention discloses a hot melt glue gun, which comprises an outer shell; an inner rotating cylinder is rotationally connected in the outer shell; a plurality of rubber tubes are movably arranged in the inner rotating cylinder; the front end of the rubber tube is fixedly connected with a rubber outlet conical head; a guide plate is formed on the inner wall of the inner rotating cylinder; a guide chute is formed on the guide plate; a one-way transmission shaft is rotationally connected in the outer shell; a driving plate is connected in the outer shell in a sliding manner; a through groove is formed on the inner wall of the rubber tube; a switching gear is connected in the outer shell; the lower part of the outer shell is connected with a switching plate in a sliding way; a linkage plate is formed at the upper end of the switching plate; the linkage plate is provided with a heating sheet; when the switching plate is positioned at the front limit position, the unidirectional transmission shaft rotates to enable the lowermost glue stick to feed forwards; when the switching board is located at the rear limit position, the one-way transmission shaft rotates to enable the inner rotary cylinder to rotate. The invention can heat the glue stick for sticking; glue sticks containing various colors can be installed; the glue outlet conical head can move back and forth, the use is simple and convenient, and the pollution of the glue head is prevented.)

1. A hot melt glue gun comprises an outer shell; the method is characterized in that: an inner rotating cylinder with a rotating shaft arranged along the front-back direction is rotationally connected in the outer shell; a plurality of rubber tubes arranged in the front-back direction are uniformly and movably arranged in the inner rotating cylinder along the circumferential direction; the front end of each rubber tube is fixedly connected with a rubber outlet conical head capable of heating the rubber rod; guide plates arranged in the front-back direction are respectively formed on the inner wall of the inner rotating cylinder and positioned on two sides of each rubber tube; a plurality of guide chutes which are obliquely arranged and are in sliding connection with the adjacent rubber tubes are uniformly formed on the guide plate; a one-way transmission shaft with a rotating shaft arranged along the left and right directions is rotationally connected in the outer shell; a driving plate for driving the one-way transmission shaft to rotate is connected in the outer shell in a sliding manner along the front and back directions; through grooves capable of being clamped with the one-way transmission shafts are formed in the inner walls of the rubber tubes and located right above the one-way transmission shafts respectively; the one-way transmission shaft can penetrate through the through groove to abut against a rubber rod positioned in the rubber pipe; a switching gear which can be in transmission connection with the one-way transmission shaft and is used for driving the inner rotary drum to rotate is connected in the outer shell; the lower part of the outer shell is connected with a switching plate capable of driving the switching gear to slide backwards in a sliding manner along the front-back direction; two linkage plates which are symmetrically arranged and are inserted with the lowest glue outlet conical head and are used for enabling the glue outlet conical head and the switching plate to synchronously move back and forth are formed at the upper end of the switching plate; the linkage plate is provided with a heating sheet for heating the lowermost glue outlet conical head;

when the switching plate is located at the front limit position, the rubber tube at the lowest position is located at the lower limit position, the one-way transmission shaft is located in the through groove at the lowest position, the switching gear is not meshed with the one-way transmission shaft, and the one-way transmission shaft rotates to enable the rubber rod at the lowest position to feed forwards; when the switching plate is located at the rear limit position, the rubber tube at the lowest position is located at the upper limit position, the one-way transmission shaft is located outside the through groove, the switching gear is meshed with the one-way transmission shaft, and the one-way transmission shaft rotates to enable the inner rotating cylinder to rotate.

2. A hot melt glue gun as claimed in claim 1, wherein: each rubber tube is rotatably connected with a tension wheel which can be abutted against the rubber rod in the corresponding rubber tube; when the glue stick is fed forwards, the tension wheel rotates synchronously.

3. A hot melt glue gun as claimed in claim 1, wherein: a front baffle plate which can be abutted against the front end of the glue outlet conical head is formed at the front end of the outer shell; and a glue outlet which penetrates through the front baffle and is used for enabling the glue outlet conical head at the lowest part to penetrate out is formed in the lower part of the front end of the front baffle.

4. A hot melt glue gun as claimed in claim 1, wherein: the unidirectional transmission shaft comprises an inner gear and an outer gear, the inner gear is rotatably connected with a rotating shaft in the outer shell and is arranged along the left-right direction, the outer gear is arranged in the middle of the outer circumference of the inner gear and is in unidirectional transmission connection with the inner gear, and the outer gear can be in transmission connection with a switching gear; when the driving plate slides reciprocally, the external gears rotate in the same direction.

Technical Field

The invention belongs to the technical field of hot melt glue guns, and particularly relates to a hot melt glue gun.

Background

Chinese patent No. CN205887364U discloses a safety hot melt adhesive gun, which is suitable for melting an adhesive tape to output a melt adhesive solution, and includes a gun housing, a melt adhesive advancing unit, and a control assembly. The gun shell comprises a glue filling port for filling the adhesive tape and a glue outlet port for outputting the molten glue. The glue-melting propulsion unit comprises a trigger, a glue-pushing mechanism controlled by the trigger and a heater. This timing device is added to hot melt adhesive rifle, recycles the meter and advances the module and carry out the electricity with warning device and be connected and control to reach the purpose that reduces the structure redundancy, it is more convenient to control, and the integrated level is high, can effectively reduce production manufacturing cost.

The glue stick can only be installed and used, in the actual use process, the glue sticks with various colors are often needed to be used, and the glue sticks are also needed to be switched back and forth in use so as to meet the requirements of different bonding positions, and the actual requirements cannot be met by the glue stick.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: aiming at the defects existing in the prior art, the hot melt adhesive gun which is provided with a plurality of adhesive rods and is convenient to switch the used adhesive rods is provided.

In order to realize the purpose of the invention, the following technical scheme is adopted for realizing the purpose: a hot melt glue gun comprises an outer shell; an inner rotating cylinder with a rotating shaft arranged along the front-back direction is rotationally connected in the outer shell; a plurality of rubber tubes arranged in the front-back direction are uniformly and movably arranged in the inner rotating cylinder along the circumferential direction; the front end of each rubber tube is fixedly connected with a rubber outlet conical head capable of heating the rubber rod; guide plates arranged in the front-back direction are respectively formed on the inner wall of the inner rotating cylinder and positioned on two sides of each rubber tube; and a plurality of guide chutes which are obliquely arranged and are connected with the adjacent rubber tubes in a sliding manner are uniformly formed on the guide plate.

A one-way transmission shaft with a rotating shaft arranged along the left and right directions is rotationally connected in the outer shell; a driving plate for driving the one-way transmission shaft to rotate is connected in the outer shell in a sliding manner along the front and back directions; through grooves capable of being clamped with the one-way transmission shafts are formed in the inner walls of the rubber tubes and located right above the one-way transmission shafts respectively; the one-way transmission shaft can penetrate through the through groove to abut against a glue stick positioned in the glue pipe.

A switching gear which can be in transmission connection with the one-way transmission shaft and is used for driving the inner rotary drum to rotate is connected in the outer shell; the lower part of the outer shell is connected with a switching plate capable of driving the switching gear to slide backwards in a sliding manner along the front-back direction; two linkage plates which are symmetrically arranged and are inserted with the lowest glue outlet conical head and are used for enabling the glue outlet conical head and the switching plate to synchronously move back and forth are formed at the upper end of the switching plate; and the linkage plate is provided with a heating sheet for heating the lowermost glue outlet conical head.

When the switching plate is located at the front limit position, the rubber tube at the lowest position is located at the lower limit position, the one-way transmission shaft is located in the through groove at the lowest position, the switching gear is not meshed with the one-way transmission shaft, and the one-way transmission shaft rotates to enable the rubber rod at the lowest position to feed forwards.

When the switching plate is located at the rear limit position, the rubber tube at the lowest position is located at the upper limit position, the one-way transmission shaft is located outside the through groove, the switching gear is meshed with the one-way transmission shaft, and the one-way transmission shaft rotates to enable the inner rotating cylinder to rotate.

As a preferable scheme: each rubber tube is rotatably connected with a tension wheel which can be abutted against the rubber rod in the corresponding rubber tube; when the glue stick is fed forwards, the tension wheel rotates synchronously.

As a preferable scheme: a front baffle plate which can be abutted against the front end of the glue outlet conical head is formed at the front end of the outer shell; and a glue outlet which penetrates through the front baffle and is used for enabling the glue outlet conical head at the lowest part to penetrate out is formed in the lower part of the front end of the front baffle.

As a preferable scheme: the unidirectional transmission shaft comprises an inner gear and an outer gear, the inner gear is rotatably connected with a rotating shaft in the outer shell and is arranged along the left-right direction, the outer gear is arranged in the middle of the outer circumference of the inner gear and is in unidirectional transmission connection with the inner gear, and the outer gear can be in transmission connection with a switching gear; when the driving plate slides reciprocally, the external gears rotate in the same direction.

Compared with the prior art, the invention has the beneficial effects that: under the initial state, the switching board is located the place ahead extreme position, and a play of the below awl head of gluing is located the shell body outside and corresponding conducting strip offsets with the heating plate, and the external gear is located the logical inslot of below.

When the product is used, the handle is held by hands, various glue sticks required to be used are respectively inserted into the glue tubes, and the glue sticks are tightly propped against the corresponding glue outlet conical heads. The other hand pulls the switching plate backwards to the rear limit position, the switching plate moves backwards to enable the linkage plate to drive the heating sheet to synchronously move backwards, and then the glue outlet conical head located at the lowest part moves backwards to enter the outer shell. The rubber outlet conical head at the lowest part moves backwards to enable the rubber pipe to synchronously move backwards, and the guide post slides along the corresponding guide inclined groove, so that the rubber pipe at the lowest part moves upwards to the corresponding through groove to be separated from the outer gear. Meanwhile, the switching plate moves backwards, so that the driving column is abutted against the connecting column and drives the switching gear to move backwards, and when the switching plate moves to the rear limit position, the switching gear is meshed with the transmission gear and the driving gear.

Then, press the trigger to the inboard, the drive plate makes the spring compression to the backward motion, and the drive plate drives the internal gear forward rotation that drives simultaneously backward motion, and the internal gear forward rotation drives the external gear and rotates and then make drive gear rotate, and drive gear rotates and drives switching gear rotation, and switching gear rotates and drives drive gear and rotate, and drive gear rotates and drives driven gear and rotate and then make the interior rotation section of thick bamboo rotate. When the trigger is released, the driving plate moves outwards under the action of the elastic force of the spring, the driving plate drives the inner gear to rotate reversely, a ratchet wheel and pawl mechanism is arranged between the inner gear and the outer gear, and the inner gear cannot drive the outer gear to rotate due to reverse rotation. The trigger is pressed down to be loosened in a reciprocating mode, so that the inner rotating cylinder rotates towards the same direction, when the inner rotating cylinder rotates to the position where the glue stick required to be used is aligned with the glue outlet, the corresponding heat conducting sheet rotates to the position between the two linkage plates and is abutted against the heating sheet, and the trigger is loosened. The switching plate is pushed forwards to the initial position, the switching plate moves forwards to drive the glue outlet conical head located at the lowest part to move forwards, and then the glue outlet conical head penetrates out of the outer shell through the glue outlet, and the driving column does not abut against the connecting column any more. The rubber outlet conical head at the bottom moves forwards to drive the corresponding rubber pipe to move forwards, the rubber pipe moves forwards to enable the guide post to move along the guide chute, the rubber pipe at the bottom moves downwards to the outer gear to enter the through groove at the bottom, the outer gear is tightly abutted to the rubber rod at the bottom, and the inner rotating cylinder cannot rotate circumferentially any more due to the fact that the rubber pipe is installed in the inner rotating cylinder.

Then, the handle is held, the power supply is switched on, the switch is turned on, the heating sheet starts to heat, the heat generated by the heating sheet conducts the heat-conducting sheet to the lowermost glue outlet conical head, and the glue stick abutted against the glue outlet conical head is heated and melted into liquid. The trigger is pressed down and loosened in a reciprocating mode, so that the outer gear rotates continuously in the same direction, at the moment, the inner rotating cylinder cannot rotate, and the outer gear rotates to force the switching gear to slide forwards along the connecting groove to be separated from the outer gear. The external gear rotates to enable the rubber rod which is abutted against the external gear to move forwards, liquid rubber which is positioned at the foremost end is extruded to flow out through the rubber outlet conical head, and meanwhile, the subsequent rubber rod moves forwards to abut against the rubber outlet conical head again to be melted into liquid. And abutting the glue outlet conical head against the position needing glue, pressing down the trigger to enable the liquid glue to flow out until the glue is adhered out, and finishing the adhering process. The in-process that glues the stick and move forward, the take-up pulley that is located the rubber tube outside supports tightly with gluing the stick to can make to glue the stick and support tightly with the outer gear, make the process of outer gear drive gluey stick more smooth and laborsaving.

When one glue stick is separated from the outer gear, the replaced glue stick is inserted into the corresponding glue tube and abuts against the tail end of the previous glue stick, the trigger is continuously pressed down and loosened in a reciprocating mode, the next glue stick is made to push the previous glue stick forward, and then the subsequent glue stick can be supplemented. In the use, can also switch the gluey stick that is using according to above-mentioned step at any time to satisfy the user demand of different bonding positions, go out to glue the conical head and rotate to when leaving the position of below, the conducting strip separates with the heating plate, goes out to glue conical head temperature reduction, and the liquid glue that goes out in gluing the conical head can not flow out, avoids the inside jam by gluing of shell body. After the glue-discharging cone head is used, the switch is turned off, the power supply is cut off, and the outer shell is stored after the temperatures of the heating sheet and the glue-discharging cone head are reduced.

According to the invention, the inner rotating cylinder is arranged, the rubber tubes are arranged in the inner rotating cylinder, a plurality of rubber sticks with different colors can be simultaneously arranged, the rubber sticks required to be used can be selected and switched by rotating the inner rotating cylinder, and the time for replacing the rubber sticks is reduced; simultaneously when the rubber tube of below is located the place ahead extreme position, the rotation of interior rotation section of thick bamboo has been restricted to the external gear is located logical inslot for the rubber rod of heating below is more stable, and when the rubber tube of below moved to the rear extreme position, the rubber tube upwards moved under the guide effect of direction chute, and then made external gear and logical groove separation, and then can switch the rubber rod of required use, easy operation is convenient.

According to the invention, by arranging the heating plate, when the heating plate is positioned between the two linkage plates, the switching plate is pulled backwards to enable the heating plate to drive the glue outlet conical head to move upwards, so that the through groove at the lowest part is separated from the outer gear, and the inner rotary cylinder can rotate to switch the glue rods required to be used; meanwhile, when the heating plate is positioned between the two linkage plates, the heating plate is heated to conduct heat to the glue discharging conical head through the heat conducting plate, the glue rod in contact with the glue discharging conical head is melted into liquid glue, and then the glue can be extruded to be bonded.

According to the invention, by arranging the switching plate, when the switching plate moves backwards to the limit position, the linkage plate can drive the lowermost glue outlet conical head to move inwards, so that the lowermost glue pipe moves inwards and upwards along the guide chute simultaneously, the outer gear is separated from the through groove, the glue outlet conical head moves to the inner part of the outer shell, the inner rotating cylinder can rotate circumferentially, and the glue rods positioned at the lowermost part are switched, namely the used glue rods are switched; when the switching plate moves backwards to the limit position, the driving column can abut against the connecting column and drive the connecting column to move backwards until the switching gear is meshed with the driving gear and the transmission gear, the trigger is pressed down and loosened in a reciprocating mode, and then the inner rotating cylinder rotates circumferentially, and the operation is simple and convenient.

According to the invention, the tensioning wheel is arranged, the tensioning wheel abuts against the rubber rod, the tensioning wheel rotates along with the continuous forward sliding of the rubber rod, and the friction force is relatively small, so that the rubber rod can move forward more smoothly and smoothly, meanwhile, the tensioning wheel can enable the rubber rod positioned at the lowest part to abut against the outer gear, and further, the rubber rod can be driven to move forward by enough friction force between the outer gear and the rubber rod, so that the smoothness of rubber outlet at the front end is ensured, and the trigger is pressed more laborsavingly.

The glue stick can be heated, and liquid glue is extruded for gluing; the rubber tube is provided with the plurality of rubber tubes, so that rubber rods with various colors can be installed and accommodated, the time for replacing the rubber rods is reduced, and time and labor are saved; the glue outlet conical head can move back and forth, only one glue outlet conical head is heated at the same time, the use is simple and convenient, and other glue outlet conical heads are positioned in the shell to prevent the pollution of the glue outlet conical heads.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic cross-sectional structure of the present invention.

Fig. 3 is a schematic exploded view of the present invention.

Fig. 4 is a schematic structural view of the outer case of the present invention.

Fig. 5 is a schematic sectional view of the outer case of the present invention.

Fig. 6 is a schematic sectional view of the inner rotary cylinder of the present invention.

Fig. 7 is a schematic structural view of the hose of the present invention.

Fig. 8 is a schematic structural view of the one-way transmission shaft of the present invention.

Fig. 9 is a schematic structural view of the switching gear of the present invention.

Fig. 10 is a schematic view of the structure of the driving plate of the present invention.

Fig. 11 is a schematic structural diagram of the switching plate of the present invention.

FIG. 12 is a schematic view of the structure of the present invention in the state of extruding glue.

FIG. 13 is a schematic diagram of a structure for switching the state of the glue stick according to the present invention.

1. An outer housing; 11. a handle; 12. an outer sliding groove; 13. a transverse rotation hole; 14. connecting grooves; 15. an inner slide groove; 16. a longitudinal rotation hole; 17. a front baffle; 171. a glue outlet; 2. an inner rotary cylinder; 21. a driven gear; 22. a guide plate; 221. a guide chute; 31. a hose; 311. a guide post; 313. positioning holes; 312. a through groove; 32. discharging a glue cone head; 321. a heat conductive sheet; 33. a tension wheel; 4. a unidirectional transmission shaft; 41. an internal gear; 411. rotating the column; 42. an outer gear; 421. a drive gear; 51. a switching gear; 511. connecting columns; 52. a transmission gear; 521. a face gear; 522. rotating the support column; 61. a drive plate; 611. a trigger; 612. a drive rack; 613. a limiting block; 62. a spring; 71. a switch board; 711. a linkage plate; 712. a slide bar; 713. connecting columns; 7131. a drive column; 72. and (4) heating the sheet.

Detailed Description

Referring to fig. 1 to 13, a hot melt adhesive gun according to the present embodiment includes an outer casing 1; the method is characterized in that: an inner rotating cylinder 2 with a rotating shaft arranged along the front-back direction is rotatably connected in the outer shell 1; a plurality of rubber tubes 31 arranged in the front-back direction are uniformly and movably arranged in the inner rotary cylinder 2 along the circumferential direction; the front end of each rubber tube 31 is fixedly connected with a rubber outlet conical head 32 capable of heating a rubber rod; the glue stick that can hold multiple colour is installed simultaneously in interior rotary cylinder 2, can satisfy different user demands simultaneously.

Guide plates 22 arranged in the front-back direction are respectively formed on the inner wall of the inner rotating cylinder 2 and positioned on two sides of each rubber tube 31; a plurality of guide chutes 221 which are obliquely arranged and are slidably connected with the adjacent rubber tubes 31 are uniformly formed on the guide plate 22; the two guide chutes 221 are uniformly arranged on the guide plate 22 along the front-rear direction; guide posts 311 slidably connected with the corresponding guide chutes 221 are formed on both sides of each rubber tube 31.

A one-way transmission shaft 4 with a rotating shaft arranged along the left-right direction is rotatably connected in the outer shell 1; a driving plate 61 for driving the one-way transmission shaft 4 to rotate is connected in the outer shell 1 in a sliding manner along the front-back direction; through grooves 312 capable of being clamped with the one-way transmission shafts 4 are formed in the inner walls of the rubber tubes 31 and located right above the one-way transmission shafts 4 respectively; the one-way transmission shaft 4 can penetrate through the through groove 312 to abut against a rubber rod in the rubber tube 31.

A switching gear 51 which can be in transmission connection with the one-way transmission shaft 4 and is used for driving the inner rotating cylinder 2 to rotate is connected in the outer shell 1; a switching plate 71 capable of driving the switching gear 51 to slide backwards is connected to the lower part of the outer shell 1 in a sliding manner along the front-back direction; two linkage plates 711 which are symmetrically arranged and are inserted into the lowermost glue outlet conical head 32 and are used for enabling the glue outlet conical head 32 and the switching plate 71 to synchronously move front and back are formed in the center of the upper end of the switching plate 71; the linkage plate 711 is provided with a heating sheet 72 for heating the lowermost glue outlet conical head 32.

A transmission gear 52 which is longitudinally arranged on a rotating shaft and can be in transmission connection with the switching gear 51 is rotatably connected above the switching gear 51 in the outer shell 1; a rotary supporting column 522 which is rotatably connected with the outer shell 1 is formed in the center of the lower end of the transmission gear 52; a longitudinal rotating hole 16 which is rotatably connected with the rotating support column 522 is formed in the outer shell 1; a face gear 521 which can be in transmission connection with the transmission gear 52 is formed at the lower end of the transmission gear 52 and positioned outside the rotating support column 522; a driven gear 21 in transmission connection with the transmission gear 52 is formed at the rear end of the inner rotating cylinder 2; when the switching gear 51 is located at the rear limit position, the switching gear 51 is in transmission connection with the one-way transmission shaft 4, and the switching gear 51 is in transmission connection with the transmission gear 52.

Connecting columns 511 are respectively formed in the central positions of the left end and the right end of the switching gear 51; connecting grooves 14 which are connected with the corresponding connecting columns 511 and are arranged along the front-back direction are respectively formed on the left inner wall and the right inner wall of the outer shell 1; a horizontally arranged driving column 713 extending backwards is formed at the upper end of the switching plate 71; a driving column 7131 which is longitudinally arranged and can be abutted against the connecting column 511 is formed on the driving column 713; when the switching plate 71 moves backward to the limit position, the driving post 7131 can abut against the connecting post 511 and drive the connecting post 511 to move backward, so that the switching gear 51 moves to the rear limit position.

Outer sliding grooves 12 are symmetrically formed on the left outer wall and the right outer wall of the outer shell 1 near the front end; sliding bars 712 which are slidably connected with the corresponding outer sliding grooves 12 are respectively formed at the upper end of the switching plate 71 close to the left end and the right end; a heat conducting fin 321 is formed on one side of the glue outlet conical head 32 close to the inner wall of the outer shell 1; the heat conducting fin 321 can be inserted between the two linkage plates 711; the heating plate 72 is disposed on one side of the linkage plate 711 facing the heat conducting plate 321; when the heat conducting fin 321 is inserted between the two linkage plates 711, the heating fin 72 is tightly abutted to the heat conducting fin 321.

The outer shell 1, the inner rotating cylinder 2 and the rubber tube 31 are made of heat-insulating flame-retardant plastic materials; a handle 11 convenient for holding the outer shell 1 is formed at the lower end of the rear part of the outer wall of the outer shell 1; a power supply module is arranged in the handle 11; a switch and a plug which can be communicated with an external power supply are arranged on the outer side of the handle 11; the heating plate 72, the switch, and the plug are electrically connected to the power module.

When the switching plate 71 is located at the front limit position, the rubber tube 31 at the lowest position is located at the lower limit position, the one-way transmission shaft 4 is located in the through groove 312 at the lowest position, the one-way transmission shaft 4 penetrates through the through groove 312 at the lowest position to abut against the rubber rod at the lowest position, the inner rotating cylinder 2 cannot rotate, the switching gear 51 is not meshed with the one-way transmission shaft 4, the one-way transmission shaft 4 rotates to enable the rubber rod at the lowest position to be fed forwards, and the rubber rod is melted into a liquid state by the rubber outlet conical head 32 and then is extruded out to be bonded.

When the switching plate 71 is located at the rear limit position, the rubber tube 31 at the lowermost position is located at the upper limit position, the one-way transmission shaft 4 is located at the outer side of the through groove 312, the inner rotating cylinder 2 can rotate, the switching gear 51 is meshed with the one-way transmission shaft 4, the switching gear 51 is meshed with the transmission gear 52, and the one-way transmission shaft 4 rotates to enable the inner rotating cylinder 2 to rotate, so that the rubber rod at the lowermost position is switched, namely, the used rubber rod is switched.

A tension wheel 33 which can be abutted against the rubber rod positioned in the corresponding rubber tube 31 is rotatably connected to each rubber tube 31; positioning holes 313 which are rotatably connected with the tension wheel 33 are respectively formed at two ends of the corresponding tension wheel 33 on the outer wall of each rubber tube 31; when the glue stick is fed forward, the tension wheel 33 rotates synchronously.

The tensioning wheel 33 abuts against the rubber rod, the tensioning wheel 33 rotates along with continuous forward sliding of the rubber rod, and friction force is relatively small, so that the rubber rod can move forward more smoothly, meanwhile, the tensioning wheel 33 can enable the rubber rod located at the lowest position to abut against the one-way transmission shaft 4, and further the fact that enough friction force exists between the one-way transmission shaft 4 and the rubber rod to drive the rubber rod to move forward is guaranteed, and therefore smoothness of rubber output at the front end is guaranteed.

A front baffle plate 17 which can abut against the front end of the glue outlet conical head 32 is formed at the front end of the outer shell 1; the lower part of the front end of the front baffle 17 is formed with a glue outlet 171 which penetrates through the front baffle 17 and is used for enabling the glue outlet conical head 32 at the lowest part to penetrate outwards.

When using, only one that is located the below at the same time go out to glue conical head 32 and is heated, warp go out to glue mouthful 171 and outwards wear out, convenient to use, other go out to glue conical head 32 and be located in shell body 1, and with preceding baffle 17 offsets, prevent go out to glue conical head 32 and glue the stick and be polluted, can also guarantee simultaneously when interior rotation bucket 2 rotates, conducting strip 321 can enter into two between the linkage board 711, and then guaranteed the motion precision.

The one-way transmission shaft 4 comprises an inner gear 41 which is rotatably connected with a rotating shaft in the outer shell 1 and is arranged along the left-right direction, and an outer gear 42 which is arranged in the middle of the outer circumference of the inner gear 41, is connected with the inner gear 41 in a one-way transmission manner and can be connected with a switching gear 51 in a transmission manner; when the driving plate 61 is reciprocally slid, the outer gears 42 are rotated in the same direction. A ratchet-pawl mechanism is arranged between the inner gear 41 and the outer gear 42; the internal gear 41 rotates in a forward direction to drive the external gear 42 to rotate, and the internal gear 41 rotates in a reverse direction to disable the external gear 42 to rotate.

The central positions of the left and right ends of the internal gear 41 are respectively provided with a rotating column 411; the left and right inner walls of the outer shell 1 are respectively formed with a transverse rotating hole 13 which is rotatably connected with the corresponding rotating column 411; a driving gear 421 which is coaxial with the outer gear 42 and can be in transmission connection with the switching gear 51 is formed at each end of the outer gear 42.

Inner sliding grooves 15 which are connected with the driving plate 61 in a sliding manner are formed in the left inner wall and the right inner wall of the outer shell 1 respectively; a driving rack 612 in transmission connection with the internal gear 41 is formed at the upper end of the driving plate 61; a trigger 611 for pressing the driving plate 61 is formed at the front end of the driving plate 61 and positioned outside the outer shell 1; a spring 62 for moving the driving plate 61 to the outside is arranged between the driving plate 61 and the outer shell 1; a limiting block 613 for preventing the driving plate 61 from sliding out of the outer shell 1 is formed at the lower end of the driving plate 61 close to the rear end.

When the glue stick is switched, the trigger 611 is pressed inwards, the driving plate 61 moves backwards to compress the spring 62, meanwhile, the driving plate 61 moves backwards to drive the inner gear 41 to rotate forwards, the inner gear 41 rotates forwards to drive the outer gear 42 to rotate so as to drive the driving gear 421 to rotate, the driving gear 421 rotates to drive the switching gear 51 to rotate, the switching gear 51 rotates to drive the transmission gear 52 to rotate, and the transmission gear 52 rotates to drive the driven gear 21 to rotate so as to drive the inner rotating cylinder 2 to rotate. When the trigger 611 is released, the driving plate 61 moves outwards under the action of the elastic force of the spring 62, the driving plate 61 moves to drive the internal gear 41 to rotate reversely, the internal gear 41 rotates reversely and cannot drive the external gear 42 to rotate, the trigger 611 is pressed and released in a reciprocating manner, so that the internal rotating cylinder 2 rotates towards the same direction, and when the internal rotating cylinder 2 rotates until a glue stick required to be used is aligned with the glue outlet 171, the trigger 611 is released.

When glue is extruded, the trigger 611 is pressed down and loosened in a reciprocating mode, so that the outer gear 42 rotates in the same direction, the glue stick abutted against the outer gear 42 is driven by the outer gear 42 to feed forwards, the glue stick can be further melted by the glue outlet conical head 32, the glue is extruded along with the continuous feeding of the glue stick, and the subsequent glue stick is continuously melted by the glue outlet conical head 32.

In the initial state, the switching plate 71 is located at the front limit position, the lowermost glue discharging cone head 32 is located outside the outer shell 1, the corresponding heat conducting fins 321 are abutted against the heating fins 72, and the outer gear 42 is located in the lowermost through groove 312.

When the product is used, the handle 11 is held by the hand, various glue sticks required to be used are respectively inserted into the rubber tube 31, and the glue sticks are tightly propped against the corresponding glue outlet conical heads 32. The other hand pulls the switching plate 71 backwards to the rear limit position, the switching plate 71 moves backwards to enable the linkage plate 711 to drive the heating sheet 321 to synchronously move backwards, and then the glue outlet cone head 32 located at the lowest part moves backwards to enter the outer shell 1. The rubber tube 31 moves backwards synchronously due to the backward movement of the lowermost rubber tapping cone head 32, and the guide post 311 slides along the corresponding guide inclined groove 221, so that the lowermost rubber tube 31 moves upwards until the corresponding through groove 312 is separated from the outer gear 42. Meanwhile, the switching plate 71 moves backwards, so that the driving post 7131 is abutted against the connecting post 511 and the switching gear 51 is driven to move backwards, and when the switching plate 71 moves to the rear limit position, the switching gear 51 is meshed with the transmission gear 52 and the driving gear 421.

Then, the trigger 611 is pressed inward, the driving plate 61 moves backward to compress the spring 62, meanwhile, the driving plate 61 moves backward to drive the inner gear 41 to rotate forward, the inner gear 41 rotates forward to drive the outer gear 42 to rotate so as to drive the driving gear 421 to rotate, the driving gear 421 rotates to drive the switching gear 51 to rotate, the switching gear 51 rotates to drive the transmission gear 52 to rotate, and the transmission gear 52 rotates to drive the driven gear 21 to rotate so as to drive the inner rotary cylinder 2 to rotate. When the trigger 611 is released, the driving plate 61 moves outwards under the action of the elastic force of the spring 62, the driving plate 61 moves to drive the internal gear 41 to rotate in the reverse direction, a ratchet and pawl mechanism is arranged between the internal gear 41 and the external gear 42, and the internal gear 41 cannot drive the external gear 42 to rotate in the reverse direction. When the inner rotary drum 2 rotates until the glue stick to be used is opposite to the glue outlet 171, the corresponding heat conducting fin 321 rotates between the two linkage plates 711 and abuts against the heating fin 72, and the trigger 611 is released. The switching plate 71 is pushed forward to the initial position, the switching plate 71 moves forward to drive the glue discharging cone head 32 located at the lowermost part to move forward, so that the glue discharging cone head 32 penetrates out of the outer shell 1 through the glue outlet 171, and the driving column 7131 is not abutted against the connecting column 511 any more. The lowermost glue outlet conical head 32 moves forwards to drive the corresponding rubber tube 31 to move forwards, the rubber tube 31 moves forwards to enable the guide column 311 to move along the guide inclined groove 211, the lowermost rubber tube 31 moves downwards to the outer gear 42 to enter the lowermost through groove 312, the outer gear 42 is abutted against the lowermost glue stick, and the inner rotating cylinder 2 cannot rotate circumferentially any more as the rubber tube 31 is installed in the inner rotating cylinder 2.

Subsequently, the handle 11 is held, the power is turned on, the switch is turned on, the heating sheet 72 starts to heat, the heat generated by the heating sheet 72 transfers the heat-conducting sheet 321 to the lowermost glue tap 32, and the glue stick abutting against the glue tap 32 is heated and melted into a liquid state. The release trigger 611 is reciprocally pressed so that the external gear 42 continues to rotate in the same direction, and at this time, since the internal rotary cylinder 2 cannot rotate, the external gear 42 rotates to force the switching gear 51 to slide forward along the coupling groove 14 to be separated from the external gear 42. The external gear 42 rotates to make the rubber stick abutted against the external gear move forwards, liquid rubber at the forefront end is extruded to flow out through the rubber tapping conical head 32, and meanwhile, the subsequent rubber stick moves forwards to abut against the rubber tapping conical head 31 again to be melted into liquid. The glue outlet conical head 32 is abutted against the place needing glue, and the trigger 611 is pressed down to enable the liquid glue to flow out until the glue is adhered out, so that the adhering process is completed. In the process that the rubber stick moves forwards, the tension wheel 33 positioned on the outer side of the rubber tube 31 abuts against the rubber stick, so that the rubber stick can abut against the outer gear 42, and the process that the outer gear 42 drives the rubber stick is smoother and labor-saving.

When one glue stick is separated from the outer gear 42, the replaced glue stick is inserted into the corresponding glue tube 31 and abuts against the tail end of the previous glue stick, and the release trigger 611 is continuously pressed down in a reciprocating manner, so that the next glue stick forwards pushes the previous glue stick forwards to move, and the supplement of the subsequent glue stick can be completed. In the using process, the glue stick in use can be switched at any time according to the steps so as to meet the use requirements of different bonding positions, when the glue outlet conical head 32 rotates to a position away from the lowest position, the heat conducting sheet 321 is separated from the heating sheet 72, the temperature of the glue outlet conical head 312 is reduced, the liquid glue in the glue outlet conical head 32 cannot flow out, and the inner part of the outer shell 1 is prevented from being blocked by the glue. After the use, the switch is turned off, the power supply is cut off, and the outer shell 1 is stored after the temperatures of the heating sheet 72 and the glue outlet conical head 32 are reduced.

According to the invention, the inner rotating cylinder 2 is arranged, the rubber tubes 31 are arranged in the inner rotating cylinder 2, a plurality of rubber bars with different colors can be simultaneously arranged, the rubber bars required to be used can be selected and switched by rotating the inner rotating cylinder 2, and the time for replacing the rubber bars is reduced; meanwhile, when the lowermost rubber tube 31 is located at the front limit position, the outer gear 42 is located in the through groove 312 to limit the rotation of the inner rotating cylinder 2, so that the rubber bars below the heating are more stable, and when the lowermost rubber tube 31 moves to the rear limit position, the rubber tube 31 moves upwards under the guiding action of the guiding chute 221, so that the outer gear 42 is separated from the through groove 312, the rubber bars required to be used can be switched, and the operation is simple and convenient.

According to the invention, by arranging the heating sheet 321, when the heating sheet 321 is positioned between the two linkage plates 711, the switching plate 71 is pulled backwards to enable the heating sheet 321 to drive the glue outlet conical head 32 to move upwards, so that the through groove 312 at the lowest part is separated from the outer gear 42, and the inner rotary cylinder 2 can rotate to switch the glue rods required to be used; meanwhile, when the heating sheet 321 is located between the two linkage plates 711, the heating sheet 72 heats and transfers heat to the glue discharging conical head 32 through the heat conducting sheet 321, the glue stick contacting with the glue discharging conical head 32 is melted into liquid glue, and then the glue can be extruded for bonding.

According to the invention, by arranging the switching plate 71, when the switching plate 71 moves backwards to the limit position, the linkage plate 711 can drive the lowermost glue outlet conical head 32 to move inwards, so that the lowermost glue pipe 31 moves inwards and upwards along the guide chute 221 at the same time, further the outer gear 42 is separated from the through groove 312, the glue outlet conical head 32 moves to the inside of the outer shell 1, the inner rotating cylinder 2 can rotate circumferentially, and the glue stick positioned at the lowermost glue stick is switched, namely the used glue stick is switched; when the switching plate 71 moves backwards to the limit position, the driving post 7131 can abut against the connecting post 511 and drive the connecting post 511 to move backwards until the switching gear 51 is meshed with the driving gear 421 and the transmission gear 52, the trigger 611 is pressed down and loosened in a reciprocating manner, and the inner rotating cylinder 2 rotates in the circumferential direction, so that the operation is simple and convenient.

According to the invention, the tension wheel 33 is arranged, the tension wheel 33 abuts against the rubber stick, the tension wheel 33 rotates along with the continuous forward sliding of the rubber stick, the friction force is relatively small, so that the rubber stick can move forward more smoothly, meanwhile, the tension wheel 33 can enable the rubber stick positioned at the lowest part to abut against the outer gear 42, and further, the rubber stick can be driven to move forward by enough friction force between the outer gear 42 and the rubber stick, so that the smoothness of glue discharging at the front end is ensured, and the trigger 611 is pressed more laborsavingly.

The glue stick can be heated, and liquid glue is extruded for gluing; the rubber tube is provided with the plurality of rubber tubes, so that rubber rods with various colors can be installed and accommodated, the time for replacing the rubber rods is reduced, and time and labor are saved; the glue outlet conical head can move back and forth, only one glue outlet conical head is heated at the same time, the use is simple and convenient, and other glue outlet conical heads are positioned in the shell to prevent the pollution of the glue outlet conical heads.