CN220532106U - Glue gun - Google Patents

Abstract

The utility model discloses a glue gun, which comprises a shell and a glue pipe connected with the shell, wherein a push rod mechanism is slidably arranged in the shell, a first elastic piece is arranged between the push rod mechanism and the shell, the push rod mechanism pushes the glue pipe to discharge glue through the first elastic piece, a first locking mechanism is arranged on the shell, a first limiting part matched with the first locking mechanism is arranged on the push rod mechanism, when the first locking mechanism is connected with the first limiting part, the first locking mechanism locks the push rod mechanism, the push rod mechanism is locked, so that glue discharge is stopped, when the first locking mechanism is separated from the first limiting part, the first locking mechanism locks the push rod mechanism, the push rod mechanism pushes the glue pipe to keep continuously discharging glue through the first elastic piece in the unlocking period, the first locking mechanism comprises an operation part for a user to operate, and the user controls the time for separating the first locking mechanism from the first limiting part through the operation part, namely the unlocking period.

Description

Glue gun

Technical Field

The utility model relates to the technical field of glue injection equipment, in particular to a glue gun.

Background

The glue gun is a glue-beating or glue-extruding tool, is widely used in industries of building decoration, electronic appliances, automobiles, automobile parts, ships, containers and the like, and can be classified into a manual glue gun, a pneumatic glue gun and an electric glue gun according to acting force, wherein the manual glue gun is popular with common users due to simple operation and low cost. The existing manual glue gun generally comprises a glue cylinder, an installation shell, a rotating handle rotationally connected with the installation shell and a fixed handle fixedly connected with the installation shell, wherein a guide cavity communicated with the glue cylinder is arranged in the installation shell, and a pushing mechanism is arranged in the guide cavity, and the working principle of the manual glue gun is as follows: pressing the rotating handle, the pushing mechanism is forced to advance along the guiding cavity to push the rubber cylinder to discharge rubber. For example, publication No.: the utility model patent of CN212493768U discloses a glue gun structure, which comprises a glue gun main body, wherein the glue gun main body is connected with a grab handle, a wrench and a push button, and two ends of the glue gun main body are respectively provided with a plug-in port for a rack push rod to pass through and a clamping groove for realizing connection with a glue barrel; the rubber cylinder limiting mechanism is connected with the rubber gun main body, and can keep unchanged position in the vertical direction with the rubber gun main body and can do linear reciprocating motion along the axial direction of the rubber gun main body. This technical scheme not only has the problem that the structure is complicated, the installation is inconvenient, presses the gum volume of a spanner packing element play stroke when using at every turn moreover, and the play volume of gluing is less, and the user need constantly press the spanner when needing to go out the glue in succession, not only wastes time and energy, can cause the play mouth to rock the problem that influences the rubber coating effect moreover.

Disclosure of Invention

The technical problem to be solved by the utility model is to provide the glue gun, wherein the glue gun is matched with the first locking mechanism through the push rod mechanism to realize continuous glue discharging, the glue gun does not need to be pressed by a user for multiple times, the use is relatively labor-saving, and the glue coating effect is relatively good.

The utility model provides a glue gun, which comprises a shell and a glue tube connected with the shell, wherein a push rod mechanism is slidably arranged in the shell, a first elastic piece is arranged between the push rod mechanism and the shell, one end of the first elastic piece is abutted against the push rod mechanism, the other end of the first elastic piece is abutted against the shell, the push rod mechanism pushes the glue tube to discharge glue through the first elastic piece, a first locking mechanism is arranged on the shell, a first limiting part matched with the first locking mechanism is arranged on the push rod mechanism, when the first locking mechanism is connected with the first limiting part, the first locking mechanism locks the push rod mechanism, the glue discharge is stopped by locking the push rod mechanism, when the first locking mechanism is separated from the first limiting part, the push rod mechanism releases the locking of the push rod mechanism, the push rod mechanism is pushed by the first elastic piece to keep continuously discharging glue, the first locking mechanism comprises an operating part for a user to operate, and the user can control the time of releasing the first locking mechanism from the first limiting part through the operating part, namely, the time of releasing the locking period.

In this technical scheme, install push rod mechanism in the casing, in order to avoid push rod mechanism and casing separation to lose easily, set up first elastic component between push rod mechanism and the casing, first elastic component is in compression stress state all the time, push rod mechanism is through the elastic force effect of first elastic component and slip and promote the rubber tube and go out the glue, through setting up first locking mechanical system and first spacing portion, be connected with first spacing portion through first locking mechanical system, first locking mechanical system locks push rod mechanism, make push rod mechanism can't slip and promote the rubber tube and go out the glue, stop out the glue promptly, when the user needs to use, the user is through the application of force in the operating portion of first locking mechanical system, make first locking mechanical system break away from with first spacing portion, first locking mechanical system is to push rod mechanism release locking, push rod mechanism receives the effort of first elastic component and slides, thereby push rod mechanism promotes the rubber tube and goes out the glue through sliding insertion in the rubber tube, this operating portion can control first locking mechanical system and first spacing portion break away from's time length, in this time, push rod mechanism can last to promote the rubber tube and make the rubber tube constantly go out the glue, promptly push rod mechanism keeps out the glue in the time to remove the glue, need not to press the glue to hold the effect constantly, and press more than the user is better.

Preferably, the first locking mechanism comprises a transmission part and a limiting rod, the first limiting part is provided with a locking position matched with the limiting rod, the locking position is provided with a plurality of locking positions along the length direction of the push rod mechanism, the transmission part is driven by the operating part to drive the limiting rod to enter or leave the locking position, the limiting rod is connected with a second elastic part, the limiting rod is reset through the second elastic part, the limiting rod enters the locking position to enable the push rod mechanism to slide and lock, and the limiting rod leaves the locking position to enable the push rod mechanism to slide and unlock.

In this technical scheme, be equipped with a plurality of locks along length direction in first spacing portion, thereby a plurality of locks set up along push rod mechanism push away gluey direction, thereby first locking mechanism passes through the operating portion atress drive driving medium control gag lever post gets into the lock position or breaks away from the lock position, thereby make gluey rifle play gluey volume controllable through setting up a plurality of locks, thereby use more accords with multiple demand, thereby first locking mechanism gets into the lock position through the gag lever post and thereby to push rod mechanism sliding lock, thereby first locking mechanism breaks away from the lock position through the gag lever post and to release the lock to push rod mechanism, locking mechanism simple structure, use laborsaving.

Preferably, the first locking mechanism further comprises a mounting seat, the transmission part and the limiting rod are mounted on the mounting seat, the limiting rod is in axial sliding fit with the mounting seat, the mounting seat is provided with a first mounting hole, one end of the limiting rod is limited in the mounting seat through the first mounting hole, and the other end of the limiting rod extends out through the first mounting hole to enter or separate from the locking position. In this technical scheme, install driving medium and gag lever post through setting up the mount pad, the structure is compacter reliable, and the other end of gag lever post passes first mounting hole and stretches out in order to cooperate with the locking position, simple structure, cost are lower.

Preferably, the mounting seat is provided with a pressing piece, the pressing piece is configured as an operation part, the mounting seat is provided with a second mounting hole, one end of the pressing piece penetrates through the second mounting hole to extend out, and the other end of the pressing piece is limited in the mounting seat through the first mounting hole and is connected with the transmission piece, and the pressing piece is stressed to drive the limiting rod to slide through the transmission piece.

In this technical scheme, through installing the piece of pressing in the mount pad, press the piece and be connected with the driving medium, should press the piece and can supply the user to operate as operating portion, the user presses the piece of pressing, presses the piece and passes through the driving medium to drive the gag lever post and get into or break away from the lock location, and transmission efficiency is high to press the piece to stretch out in order to press the user through first mounting hole, the user uses convenient laborsaving.

As an improvement, this application provides a concrete structure's first locking mechanical system, wherein, the driving medium includes first slider and second slider, the gag lever post is installed between first slider and second slider, gag lever post one side and first slider butt, gag lever post opposite side and second slider butt, when first slider and second slider move in opposite directions, the gag lever post slides under the effect of first slider and second slider and breaks away from the lock location, when first slider and second slider move dorsad, the gag lever post slides under the effect of second elastic component and gets into the lock location.

In this technical scheme, be first slider and second slider through setting up the driving medium, install the gag lever post between first slider and second slider, when first slider and second slider receive the opposite direction motion of pressing force, first slider and second slider all slide towards the gag lever post promptly, under first slider and the inward effort of second slider, the gag lever post atress moves to the direction of keeping away from the lock location, in order to hold first slider and second slider, the second elastic component receives the gag lever post effect to be in compression stress state this moment, the gag lever post breaks away from the lock location and makes push rod mechanism slip unblock, when first slider and second slider do not receive the pressing force, the gag lever post resets the motion under the effect of second elastic component, so that first slider and second slider back motion reset, the gag lever post gets into the lock location through second elastic component effort, make push rod mechanism slip locking, and a structure is simple, it is convenient to use.

As an improvement, the pressing piece is provided with a first connecting rod and a second connecting rod, the first connecting rod is in butt joint with the first sliding block, the second connecting rod is in butt joint with the second sliding block, and when the pressing piece is stressed to slide towards the side where the limiting rod is located, the first sliding block and the second sliding block are subjected to acting force of the first connecting rod and the second connecting rod to move in opposite directions.

In the technical scheme, a user presses the pressing piece to enable the pressing piece to slide towards the direction of the limiting rod under the stress, the pressing piece acts on the first sliding block through the first connecting rod and acts on the second sliding block through the second connecting rod, so that the first sliding block and the second sliding block are enabled to move in opposite directions under the stress, the limiting rod is driven to be separated from the locking position, the second elastic piece is in a compression stress state, and the first locking mechanism is compact in structure, saves space and is beneficial to improving transmission efficiency.

As an improvement, the second elastic piece is arranged between the limiting rod and the pressing piece, one end of the second elastic piece is propped against the pressing piece, the other end of the second elastic piece is propped against the limiting rod, and the pressing piece and the limiting rod are automatically reset through the second elastic piece.

In this technical scheme, install the second elastic component between gag lever post and pressing the piece, when the user removes the pressing effort to pressing the piece, pressing the effort that piece and gag lever post all received the second elastic component and reset, first slider and second slider reset under the effect of gag lever post, use laborsaving convenient more.

As an improvement, the first sliding block is provided with a first guide surface and a second guide surface, the first guide surface is abutted with the bottom of the first connecting rod, the second guide surface is abutted with one side of the limiting rod, and the first guide surface and the second guide surface are reversely arranged; the second sliding block is provided with a third guide surface and a fourth guide surface, the third guide surface is connected with the bottom of the second connecting rod, the fourth guide surface is abutted to the other side of the limiting rod, and the third guide surface and the fourth guide surface are reversely arranged.

In this technical scheme, set up first guide surface and second guide surface reverse, third guide surface and fourth guide surface reverse for press the piece and can reverse motion through the driving medium with the gag lever post, when the user presses the piece, press the piece and slide along first guide surface through first connecting rod, the second connecting rod slides along third guide surface, make first slider and second slider move in opposite directions, and then make one side of gag lever post slide along second guide surface, the opposite side slides along fourth guide surface, make the gag lever post break away from the lock location, transmission efficiency is better, use more laborsaving.

As an improvement, the limiting rod is T-shaped. In this technical scheme, the top of T font gag lever post can spacing install in the mount pad, and its pole portion can stretch out through first mounting hole and lock a cooperation, and top one side of T font gag lever post can with the second guide surface sliding fit of first slider, and the top opposite side of T font gag lever post can with the fourth guide surface sliding fit of second slider, realizes the linkage through simple structure, not only simple to operate, and the cost is lower moreover.

As an improvement, install the third elastic component in the mount pad, the one end of third elastic component and the bottom butt of mount pad, the other end of third elastic component and the bottom butt of pressing the piece, third elastic component is provided with at least one.

In this technical scheme, through setting up at least one third elastic component in the mount pad, when the piece is pressed to the piece that presses, the third elastic component receives the piece effort of pressing and is in compression stress state, when the piece does not receive the effort of pressing, the piece of pressing receives the effort of third elastic component can reset more fast automatically, uses more laborsaving.

As an improvement, the present application may further provide a first locking mechanism with another specific structure based on the foregoing scheme, where the housing is provided with a holding portion, the holding portion is rotatably connected with a handle, the handle is abutted against the pressing member, the handle is configured as the operation portion, the handle is forced to rotate and acts on the pressing member, so that the pressing member slides to the side where the limiting rod is located, and the pressing member drives the limiting rod to be separated from the locking position through the transmission member; the handle is connected with a fourth elastic piece, and the handle is reset through the rotation of the fourth elastic piece.

In this technical scheme, set up the casing and have the grip, this grip rotates and is connected with the handle, through setting up the handle and pressing the piece butt, the operating portion in this scheme no longer is pressing the piece, the handle is the grip for the user operation, the user makes the handle rotate through pressing the handle, the handle presses the piece through rotating, thereby make the gag lever post break away from the lock location, and a structure is simple, the transmission is reliable, and the user holds the grip can direct application of force in the handle, so that user's single hand operation, the user loosens the handle, the handle can automatic re-setting under the effect of fourth elastic component, it is more laborsaving to use.

As an improvement, the application can also provide a first locking mechanical system of concrete structure, wherein, press the piece outer wall to be provided with first arch, the mount pad inner wall is equipped with second spacing portion, presses the piece to be connected with the second spacing portion through first arch and is spacing with the slip, press piece and transmission piece circumference normal running fit, press the piece and rotate for the mount pad through the transmission piece so that first arch gets into or breaks away from second spacing portion, when first arch gets into second spacing portion, the gag lever post keeps stretching out and enters into the lock position, when first arch breaks away from second spacing portion, the gag lever post keeps retracting thereby breaks away from the lock position.

According to the technical scheme, the first bulge is arranged on the pressing piece, the second limiting part is arranged on the mounting seat, the pressing piece is connected with the second limiting part through the first bulge, so that the pressing piece slides and limits relative to the mounting seat, the pressing piece can rotate relative to the mounting seat through the transmission piece, when the pressing piece is acted by pressing force, the pressing piece slides downwards to be abutted with the transmission piece, the pressing piece rotates relative to the mounting seat under the cooperation of the transmission piece until the first bulge enters the second limiting part, a user releases the pressing piece, the first bulge abuts against the second limiting part to enable the pressing piece to slide upwards, the limiting rod keeps extending to enter a locking position under the action of the pressing piece and the transmission piece, and the pushing mechanism cannot slide to enable a rubber tube to be out of rubber; when the pressing piece is pressed the effort again, the pressing piece slides downwards to first protruding second spacing portion that breaks away from for the pressing piece can rotate through the cooperation effect of driving medium, and the user loosens the pressing piece this moment, and pressing piece and gag lever post all reset under the effect of second elastic component, and the gag lever post breaks away from the locking position, and pushing mechanism can make the rubber tube continuously play glue under first elastic component effect, and the user need not to press for many times, and it is laborsaving convenient to use.

As an improvement, the pressing piece, the transmission piece and the limiting rod are sleeved up and down in sequence, the pressing piece is provided with a first rotating part, the transmission piece is provided with a second rotating part, and the pressing piece is in circumferential rotation fit with the second rotating part through the first rotating part so as to rotate relative to the mounting seat.

In this technical scheme, set up and cup joint from top to bottom in proper order according to driving medium, driving medium and gag lever post, the driving medium is pressed the power and can be driven driving medium and gag lever post and all move down according to the pressing, sets up first rotating part on pressing the driving medium, sets up second rotating part on the driving medium, through first rotating part and second rotating part cooperation for pressing the driving medium and can rotate for mount pad circumference through the driving medium, transmission efficiency is better.

As an improvement, the mounting seat inner wall is provided with a third limiting part which is in up-down sliding fit with the first bulge, when the pressing piece is stressed to enable the first bulge to slide downwards along the third limiting part to be separated from the third limiting part, under the action of the first rotating part and the second rotating part, the first bulge rotates to be connected with the third limiting part, the limiting rod is kept to stretch out under the action of the driving piece, when the pressing piece is stressed again to enable the first bulge to be separated from the second limiting part, under the action of the first rotating part and the second rotating part, the first bulge rotates to be connected with the third limiting part, and the pressing piece and the limiting rod are reset under the action of the second elastic piece.

In this technical scheme, through set up the third spacing portion on the inner wall of mount pad, through the cooperation of third spacing portion and first arch to rotate spacing to the mount pad circumference, and first arch can slide from top to bottom along the third spacing portion, when initial state, first arch is located the second spacing portion, the gag lever post keeps stretching out and gets into the lock location, make push rod mechanism slide locking, when the button receives the pressing force, the button slides down and makes first arch break away from the second spacing portion, under the effect of first rotation portion and second rotation portion, the button rotates to first arch and gets into third spacing portion for the mount pad, the user loosens the button, the button all upwards slides under the effect of second elastic component with the gag lever post, first arch upwards slides to the top along the third spacing portion, in order to prevent that the button breaks away from the mount pad, the gag lever post breaks away from the lock location and makes push rod mechanism slide the unblock, push rod mechanism can promote out the glue continuously, when need not out the glue, the user only need press the button again and press the button down, the button down slides down and makes first protruding and gets into the third spacing portion, the button down and makes the button down and gets into the third spacing portion and makes the button down and makes the stopper slide and keeps the stopper to stretch out the stop lever post continuously, the button down and make the button to slide and the stopper slide and make the stopper to slide and the stopper to slide.

As an improvement, one end of the second elastic piece is abutted with the bottom of the mounting seat, and the other end of the second elastic piece is abutted with the limiting rod. In this technical scheme, be located between gag lever post and the mount pad through setting up second elastic component, cup joint about pressing piece, driving medium and gag lever post in proper order, under the pressing force effect, the second elastic component is in compression stress state, after removing the pressing force effect, presses the elastic force slip that all passes through second elastic component to reset, simple structure, use laborsaving.

As an improvement, the stop lever includes cap portion and pole portion, the driving medium is equipped with the third mounting hole with cap portion adaptation, the driving medium is fixed cup joint with the cap portion through the third mounting hole, pole portion and second mounting hole all are the style of calligraphy to make stop lever and driving medium rotate spacingly.

In this technical scheme, through setting up the gag lever post and fixedly cup jointing through the third mounting hole of cap portion and driving medium for driving medium and gag lever post simultaneous movement, the pole portion and the second mounting hole that set up the gag lever post all are a word, make the gag lever post unable rotation for the mount pad, thereby make the driving medium unable rotation for the mount pad, in order to improve driving medium and to press the transmission efficiency of driving medium, avoid idling, use more laborsaving.

As an improvement, a reset piece is arranged on the push rod mechanism, a first chute matched with the reset piece is arranged on the shell, the reset piece penetrates through the first chute to extend out and is in sliding fit with the first chute, and the push rod mechanism slides and resets along the first chute under the action of the stress of the reset piece.

In this technical scheme, when push rod mechanism slides to the rubber tube and does not have gluey, the user need change new rubber tube and reset push rod mechanism, and push rod mechanism installs in the casing, and the piece that resets on the push rod mechanism stretches out through the first spout of casing, and the user makes the piece that resets slide to the home position in first spout through the application of force piece that resets, and the piece that resets drives push rod mechanism and resets, and the user need not to dismantle push rod mechanism again, and it is more convenient to install and use.

As an improvement, the rubber tube comprises a first rubber tube and a second rubber tube, the push rod mechanism comprises a first push rod corresponding to the first rubber tube and a second push rod corresponding to the second rubber tube, a connecting piece is arranged between the first push rod and the second push rod, a first limiting part is arranged between the first push rod and the second push rod, the first limiting part is located at the front side of the connecting piece, and the reset piece is arranged on the connecting piece.

In this technical scheme, through setting up first rubber tube and second rubber tube, first rubber tube is used for adorning A and glues, and the second rubber tube is used for adorning B and glues, and pushing mechanism sets up first push rod and second push rod in order to promote first rubber tube and second rubber tube and crowded gluey simultaneously to make A glue and B glue intensive mixing even through the gluey mouth, in order to satisfy the user demand.

As an improvement, the shell is provided with a mounting part, the rubber tube is provided with a mounting plate matched with the mounting part, the mounting plate is spliced with the mounting part, the shell is provided with a second locking mechanism, and the mounting plate is limited in the mounting part through the second locking mechanism.

In this technical scheme, the rubber tube inserts in the installation department through the mounting panel in order to install on the casing, through setting up second locking mechanical system on the casing, when second locking mechanical system is connected with the mounting panel, the mounting panel limit is located the installation department, and the rubber tube can't take off from the casing, and when second locking mechanical system breaks away from with the mounting panel, the spacing of mounting panel is relieved, and the rubber tube can be taken off from the casing, and the installation is dismantled laborsaving convenient.

As an improvement, the second locking mechanism comprises a push button and a fifth elastic piece, a second chute which is in sliding fit with the push button is arranged on the shell, the push button slides through the second chute, and the push button slides and resets through the fifth elastic piece.

In this technical scheme, the spacing mounting panel of second locking mechanical system through pushing the button for the button slides in the direction of keeping away from the mounting panel in the second spout when the user application of force in pushing the button, makes the button break away from the mounting panel, in order to relieve the spacing of mounting panel, and the fifth elastic component is in compression stress state this moment, and when the user removed the effort to the button, the button slides along the second spout under the effect of fifth elastic component and resets, and the button is connected the mounting panel in order to realize spacing, simple structure, use laborsaving.

Drawings

Fig. 1 is a schematic perspective view of a glue gun according to the present disclosure.

Fig. 2 is a schematic diagram of a portion of a glue gun according to the present disclosure.

Fig. 3 is a schematic perspective view of a push rod mechanism and a first locking mechanism in embodiment 1 of the present disclosure.

Fig. 4 is a schematic cross-sectional view of the push rod mechanism and the first locking mechanism in embodiment 2 of the present disclosure.

Fig. 5 is a partial schematic structural view of a first locking mechanism in embodiment 2 of the present disclosure.

Fig. 6 is a schematic perspective view of a glue gun according to embodiment 3 of the disclosure.

Fig. 7 is a schematic cross-sectional view of a glue gun in example 3 of the disclosure.

Fig. 8 is an enlarged partial schematic view of fig. 7 a of the present disclosure.

Fig. 9 is a schematic perspective view of a glue gun according to embodiment 4 of the disclosure.

Fig. 10 is a schematic cross-sectional view of a glue gun in example 4 of the disclosure.

Fig. 11 is an exploded view of the first locking mechanism in embodiment 4 of the present disclosure.

Fig. 12 is a schematic perspective view of a housing in the present disclosure.

The figure shows: 1. a housing; 11. a grip portion; 12. a handle; 13. a first chute; 14. a mounting part; 15. a second chute; 16. a fourth elastic member; 2. a rubber tube; 21. a first rubber tube; 22. a second rubber tube; 23. a mounting plate; 3. a push rod mechanism; 31. a first limit part; 311. locking and positioning; 32. a reset member; 33. a connecting sheet; 34. a first elastic member; 35. a first push rod; 36. a second push rod; 4. a first locking mechanism; 41. a transmission member; 411. a first slider; 4111. a first guide surface; 4112. a second guide surface; 412. a second slider; 4121. a third guide surface; 4122. a fourth guide surface; 413. a second rotating part; 42. a limit rod; 421. a cap portion; 422. a stem portion; 43. a mounting base; 431. a first mounting hole; 432. a second mounting hole; 433. a second limit part; 434. a third limit part; 44. a pressing member; 441. a first link; 442. a second link; 443. a first protrusion; 444. a first rotating part; 45. a second elastic member; 46. a third elastic member; 5. a second locking mechanism; 51. a push button; 52. and a fifth elastic member.

Detailed Description

For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed description are merely illustrative of exemplary embodiments of the application and are not intended to limit the scope of the application in any way. Like reference numerals refer to like elements throughout the specification.

In the drawings, the thickness, size and shape of the object have been slightly exaggerated for convenience of explanation. The figures are merely examples and are not drawn to scale.

It will be further understood that the terms "comprises," "comprising," "includes," "including," "having," "including" and/or "having," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

Example 1

As shown in fig. 1 to 4, the application discloses a glue gun, which comprises a shell 1 and a glue tube 2 connected with the shell 1, wherein a push rod mechanism 3 is slidably installed in the shell 1, the push rod mechanism 3 is installed in the shell 1 so as to avoid the separation of the push rod mechanism 3 and the shell 1 from being easy to lose, a first elastic piece 34 is arranged between the push rod mechanism 3 and the shell 1, one end of the first elastic piece 34 is abutted with the push rod mechanism 3, the other end of the first elastic piece 34 is abutted with the shell 1, the first elastic piece 34 is always in a compression stress state, and the push rod mechanism 3 slides to push the glue tube 2 to discharge glue under the action of the elastic force of the first elastic piece 34;

As shown in fig. 1, the first locking mechanism 4 is installed on the casing 1, the first limiting part 31 adapted to the first locking mechanism 4 is provided on the push rod mechanism 3, the push rod mechanism 3 is connected with the first limiting part 31 through the first locking mechanism 4, the first locking mechanism 4 locks the push rod mechanism 3, so that the push rod mechanism 3 can not slide to push the rubber tube 2 to discharge rubber, namely, the rubber discharge is stopped, when a user needs to use, the first locking mechanism 4 is separated from the first limiting part 31 through an operation part exerting force on the first locking mechanism 4, the first locking mechanism 4 unlocks the push rod mechanism 3, the push rod mechanism 3 slides under the action of the first elastic part 34, the push rod mechanism 3 is inserted into the rubber tube 2 through sliding under the action of the first elastic part 34, the operation part can control the time of the first locking mechanism 4 separated from the first limiting part 31, in this time, the push rod mechanism 3 can continuously push the rubber tube 2, namely, the push rod mechanism 3 keeps the rubber tube 2 to discharge rubber through the first elastic part 34, the rubber discharge rubber is not required to be continuously pushed by the user, and the user has a better effect of pressing the rubber tube continuously for many times.

More specifically, as shown in fig. 2 to 4, the first locking mechanism 4 includes a transmission member 41 and a limiting rod 42, the first limiting portion 31 is provided with a locking position 311 adapted to the limiting rod 42, the locking position 311 is provided with a plurality of locking positions 311 along the length direction of the push rod mechanism 3, that is, a plurality of locking positions 311 are arranged along the glue pushing direction of the push rod mechanism 3, the transmission member 41 is driven by an operation portion to enter or leave the locking position 311, the first locking mechanism 4 drives the transmission member 41 to control the limiting rod 42 through the stress of the operation portion, the limiting rod 42 is connected with a second elastic member 45, the limiting rod 42 is reset through the second elastic member 45, the glue gun is controllable in glue outlet amount through the arrangement of the plurality of locking positions 311, the first locking mechanism 4 enters the locking position 311 through the limiting rod 42 to slidingly lock the push rod mechanism 3, and the first locking mechanism 4 leaves the locking position 311 through the limiting rod 42 to unlock the push rod mechanism 3, and the locking mechanism is simple in structure and labor-saving in use.

More specifically, as shown in fig. 2 to 4, the first locking mechanism 4 further includes a mounting seat 43, the transmission member 41 and the limiting rod 42 are both mounted on the mounting seat 43, the limiting rod 42 is axially slidably matched with the mounting seat 43, the mounting seat 43 is provided with a first mounting hole 431, one end of the limiting rod 42 is limited in the mounting seat 43 through the first mounting hole 431, the other end of the limiting rod 42 extends out through the first mounting hole 431 to enter or leave the locking position 311, the transmission member 41 and the limiting rod 42 are mounted by arranging the mounting seat 43, the structure is more compact and reliable, the other end of the limiting rod 42 extends out through the first mounting hole 431 to be matched with the locking position 311, and the structure is simple and the cost is lower.

More specifically, as shown in fig. 2 to 4, a pressing member 44 is mounted on the mounting seat 43, the pressing member 44 is used as an operation part for a user to operate, the mounting seat 43 is provided with a second mounting hole 432, one end of the pressing member 44 extends out through the second mounting hole 432, the other end of the pressing member 44 is limited in the mounting seat 43 through the first mounting hole 431 and is connected with the transmission member 41, the pressing member 44 is stressed to drive the limiting rod 42 to slide through the transmission member 41, the user presses the pressing member 44, the pressing member 44 drives the limiting rod 42 to enter or leave the locking position 311 through the transmission member 41, the transmission efficiency is high, the pressing member 44 extends out through the first mounting hole 431 so as to be convenient for the user to press, and the user can use the device conveniently and easily and laborsaving.

Example 2

As shown in fig. 1 to 5, this embodiment provides a glue gun according to embodiment 1, the glue gun structure is the same as that of embodiment 1, wherein the transmission member 41 includes a first slider 411 and a second slider 412, the limit lever 42 is mounted between the first slider 411 and the second slider 412, one side of the limit lever 42 abuts against the first slider 411, the other side of the limit lever 42 abuts against the second slider 412, when the first slider 411 and the second slider 412 are moved towards each other by a pressing force, that is, the first slider 411 and the second slider 412 slide towards the limit lever 42, under the inward acting force of the first slider 411 and the second slider 412, the limit lever 42 is forced to move away from the lock position 311 to accommodate the first slider 411 and the second slider 412, at this time, the second elastic member 45 is acted on by the limit lever 42 to be in a compressed stressed state, the limit lever 42 is disengaged from the lock position 311 to enable the push rod mechanism 3 to slide and unlock, when the first slider 411 and the second slider 412 are not pressed by a pressing force, the limit lever 42 is reset under the action of the second elastic member 45 to enable the first slider 411 and the second slider 412 to move back towards the limit lever 412 to move towards the lock position 311, so that the push rod mechanism is easy to enter the lock position by the lock position mechanism 45.

More specifically, as shown in fig. 5, the pressing member 44 is provided with a first link 441 and a second link 442, the first link 441 is in contact with the first slider 411, the second link 442 is in contact with the second slider 412, when the user presses the pressing member 44, the pressing member 44 is forced to slide towards the limit lever 42, the pressing member 44 acts on the first slider 411 through the first link 441 and acts on the second slider 412 through the second link 442, so that the first slider 411 and the second slider 412 are forced to move towards each other, and the limit lever 42 is driven to disengage from the lock position 311, so that the second elastic member 45 is in a compression stress state, and the first locking mechanism 4 has a compact structure, saves space, and is beneficial to improving transmission efficiency.

More specifically, as shown in fig. 5, the second elastic member 45 is installed between the stop lever 42 and the pressing member 44, one end of the second elastic member 45 abuts against the pressing member 44, the other end of the second elastic member 45 abuts against the stop lever 42, the pressing member 44 and the stop lever 42 automatically return through the second elastic member 45, when the pressing force to the pressing member 44 is removed by the user, the pressing member 44 and the stop lever 42 are reset by the acting force of the second elastic member 45, and the first sliding block 411 and the second sliding block 412 are reset under the action of the stop lever 42, so that the use is more labor-saving and convenient.

More specifically, as shown in fig. 5, a first guiding surface 4111 and a second guiding surface 4112 are provided on the first slider 411, the first guiding surface 4111 is abutted against the bottom of the first link, the second guiding surface 4112 is abutted against one side of the limit lever 42, the first guiding surface 4111 is reversely disposed with the second guiding surface 4112, a third guiding surface 4121 and a fourth guiding surface 4122 are provided on the second slider 412 of the first guiding surface 4111 and the second guiding surface 4112, the third guiding surface 4121 is connected with the bottom of the second link 442, the fourth guiding surface 4122 is abutted against the other side of the limit lever 42, the third guiding surface 4121 is reversely disposed with the fourth guiding surface 4122, the first guiding surface 4111 is reversely disposed with the second guiding surface 4112, the third guiding surface 4121 is reversely disposed with the fourth guiding surface 4122, so that the pressing member 44 and the limit lever 42 can reversely move through the driving member 41, when the pressing member 44 is pressed by a user, the pressing member 44 moves along the first guiding surface 4111, the third guiding surface 4121 and the other side of the limit lever 442 slides along the first guiding surface 4121, the other side of the limit lever 42 is separated from the second guiding surface 4142, and the other side of the limit lever 4122 is better, and the sliding is made to slide along the second guiding surface 4142 and slide along the other side of the limit lever 42.

More specifically, as shown in fig. 5, the stop lever 42 is T-shaped, the top of the T-shaped stop lever 42 can be mounted in the mounting seat 43 in a limited manner, the rod portion 422 of the T-shaped stop lever can extend out through the first mounting hole 431 to be matched with the locking position 311, one side of the top of the T-shaped stop lever 42 can be slidably matched with the second guide surface 4112 of the first slider 411, and the other side of the top of the T-shaped stop lever 42 can be slidably matched with the fourth guide surface 4122 of the second slider 412.

More specifically, as shown in fig. 5, a third elastic member 46 is installed in the installation seat 43, one end of the third elastic member 46 is abutted to the bottom of the installation seat 43, the other end of the third elastic member 46 is abutted to the bottom of the pressing member 44, and at least one third elastic member 46 is provided, in this embodiment, two third elastic members 46 are provided, and by providing the third elastic members 46 in the installation seat 43, when the pressing member 44 is pressed, the third elastic member 46 is pressed by the pressing member 44 and is in a compression stress state, and when the pressing member 44 is not pressed by the pressing force, the pressing member 44 is automatically reset faster by the action of the third elastic member 46, so that the use is more labor-saving.

Example 3

As shown in fig. 6 to 8, this embodiment provides a glue gun based on embodiment 2, the glue gun structure is the same as embodiment 2, wherein, the housing 1 is provided with a holding part 11, the holding part 11 is rotatably connected with a handle 12, the handle 12 is abutted with a pressing piece 44, the operating part in this scheme is no longer the pressing piece 44, the handle 12 is used as the operating part for the user to operate, the handle 12 is forced to rotate and acts on the pressing piece 44, so that the pressing piece 44 slides to the side of the limiting rod 42, the pressing piece 44 drives the limiting rod 42 to disengage from the locking position 311 through the transmission piece 41, the user presses the handle 12 to rotate, the handle 12 presses the pressing piece 44 through rotation, so that the limiting rod 42 is disengaged from the locking position 311, the structure is simple, the transmission is reliable, and the user holds the holding part 11 and can directly apply force to the handle 12, so that the user can operate with one hand; the handle 12 is connected with the fourth elastic piece 16, and the user loosens the handle 12, and the handle 12 can be reset automatically under the effect of the fourth elastic piece 16, so that the use is more labor-saving.

Example 4

As shown in fig. 9 to 11, this embodiment provides a glue gun based on embodiment 1, the glue gun structure is the same as embodiment 1, wherein, the outer wall of the pressing piece 44 is provided with a first protrusion 443, the inner wall of the mounting seat 43 is provided with a second limiting part 433, the pressing piece 44 is connected with the second limiting part 433 through the first protrusion 443 to slide and limit, the pressing piece 44 is matched with the periphery Xiang Zhuaidong of the transmission piece 41, the pressing piece 44 rotates relative to the mounting seat 43 through the transmission piece 41 so that the first protrusion 443 enters or leaves the second limiting part 433, when the pressing piece 44 is acted by pressing force, the pressing piece 44 slides downwards to abut against the transmission piece 41, the pressing piece 44 rotates relative to the mounting seat 43 under the matching action of the transmission piece 41 until the first protrusion 443 enters the second limiting part 433, the user releases the pressing piece 44, the first protrusion 443 abuts against the second limiting part 433 so that the pressing piece 44 cannot slide upwards, under the action of the pressing piece 44 and the transmission piece 41, the limiting rod 42 keeps extending out into the lock positioning 311, and the pushing mechanism cannot slide so that the glue tube 2 exits; when the pressing piece 44 is pressed again, the pressing piece 44 slides downwards until the first protrusion 443 is separated from the second limiting part 433, so that the pressing piece 44 can rotate under the cooperation of the transmission piece 41, at the moment, the user releases the pressing piece 44, both the pressing piece 44 and the limiting rod 42 reset under the action of the second elastic piece 45, the limiting rod 42 is separated from the locking position 311, the pushing mechanism can enable the rubber tube 2 to continuously discharge rubber under the action of the first elastic piece 34, the user does not need to press for multiple times, and the use is labor-saving and convenient.

More specifically, as shown in fig. 10 and 11, the pressing member 44, the transmission member 41 and the limiting rod 42 are sequentially sleeved up and down, the pressing member 44 can drive the transmission member 41 and the limiting rod 42 to move downwards by pressing force, the pressing member 44 is provided with a first rotating portion 444, the transmission member 41 is provided with a second rotating portion 413, and the pressing member 44 can rotate circumferentially relative to the mounting seat 43 through the cooperation of the first rotating portion 444 and the second rotating portion 413, so that transmission efficiency is better.

More specifically, as shown in fig. 11, the inner wall of the mounting seat 43 is provided with a third limiting part 434, the third limiting part 434 is matched with the first protrusion 443 to limit the circumferential rotation of the mounting seat 43, the first protrusion 443 can slide up and down along the third limiting part 434, in an initial state, the first protrusion 443 is positioned in the second limiting part 433, and the limiting rod 42 keeps extending out into the locking position 311, so that the push rod mechanism 3 is locked in a sliding manner;

when the pressing member 44 receives a pressing force, the pressing member 44 slides downwards so that the first protrusion 443 is separated from the second limiting portion 433, under the action of the first rotating portion 444 and the second rotating portion 413, the pressing member 44 rotates relative to the mounting seat 43 until the first protrusion 443 enters the third limiting portion 434, a user releases the pressing member 44, the pressing member 44 and the limiting rod 42 slide upwards under the action of the second elastic member 45, the first protrusion 443 slides upwards to the top along the third limiting portion 434 so as to prevent the pressing member 44 from separating from the mounting seat 43, the limiting rod 42 is separated from the locking position 311 so that the push rod mechanism 3 slides and unlocks, the push rod mechanism 3 can push the rubber tube 2 for continuously discharging rubber, when the rubber is not required to be discharged, the user only needs to press the pressing member 44 once again, the pressing member 44 slides downwards so that the first protrusion 443 is separated from the third limiting portion 434, the first protrusion 443 rotates along with the pressing member 44 to be connected with the second limiting portion 433 so that the pressing member 44, the driving member 41 and the limiting rod 42 slide upwards to the top, so that the limiting rod 42 is prevented from separating from the mounting seat 43, the limiting rod 42 from the locking position 311 is kept to extend out of the locking position mechanism 3, and the push rod mechanism 3 is not required to slide again, and the pressing force is more convenient.

More specifically, one end of the second elastic piece 45 is abutted with the bottom of the mounting seat 43, the other end of the second elastic piece 45 is abutted with the limiting rod 42, the second elastic piece 45 is arranged between the limiting rod 42 and the mounting seat 43, the pressing piece 44, the transmission piece 41 and the limiting rod 42 are sequentially sleeved up and down, under the action of pressing force, the second elastic piece 45 is in a compression stress state, and after the action of the pressing force is removed, the pressing piece 44, the transmission piece 41 and the limiting rod 42 are all slid and reset through the elastic acting force of the second elastic piece 45, so that the structure is simple and the use is labor-saving.

More specifically, as shown in fig. 11, the limiting rod 42 includes a cap 421 and a rod 422, the driving member 41 is provided with a third mounting hole adapted to the cap 421, and the driving member 41 is fixedly sleeved with the cap 421 through the third mounting hole, so that the driving member 41 and the limiting rod 42 synchronously move, and the rod 422 and the second mounting hole 432 are both in a shape of a line, so that the limiting rod 42 cannot rotate relative to the mounting seat 43, and the driving member 41 cannot rotate relative to the mounting seat 43, so that the driving efficiency of the driving member 41 and the pressing member 44 is improved, idle running is avoided, and the use is more labor-saving.

Example 5

As shown in fig. 1 to 12, this embodiment provides a glue gun based on any one of embodiments 1 to 4, wherein a reset piece 32 is provided on a push rod mechanism 3, a first chute 13 adapted to the reset piece 32 is provided on a housing 1, the reset piece 32 extends out through the first chute 13 and is slidably matched with the first chute 13, the push rod mechanism 3 slides and resets along the first chute 13 under the force of the reset piece 32, when the push rod mechanism 3 slides until the glue tube 2 is free of glue, a user needs to replace the new glue tube 2 and reset the push rod mechanism 3, the push rod mechanism 3 is installed in the housing 1, the reset piece 32 on the push rod mechanism 3 extends out through the first chute 13 of the housing 1, the user applies a force to the reset piece 32 to slide the reset piece 32 in the first chute 13 to a starting position, the reset piece 32 drives the push rod mechanism 3 to reset, and the user does not need to disassemble and assemble the push rod mechanism 3 again, so that the installation and use are more convenient.

More specifically, as shown in fig. 2, the rubber tube 2 comprises a first rubber tube 21 and a second rubber tube 22, the first rubber tube 21 is used for containing the A rubber, the second rubber tube 22 is used for containing the B rubber, the push rod mechanism 3 comprises a first push rod 35 corresponding to the first rubber tube 21 and a second push rod 36 corresponding to the second rubber tube 22, the push mechanism is provided with the first push rod 35 and the second push rod 36 to push the first rubber tube 21 and the second rubber tube 22 to squeeze the rubber simultaneously, and the A rubber and the B rubber are fully and uniformly mixed through a rubber nozzle so as to meet the use requirement; the connecting piece 33 is arranged between the first push rod 35 and the second push rod 36, the first limiting part 31 is positioned at the front side of the connecting piece 33, the resetting piece 32 is arranged on the connecting piece 33, and the distribution is reasonable.

More specifically, as shown in fig. 2 and 12, the housing 1 is provided with the mounting portion 14, the rubber tube 2 is provided with the mounting plate 23 adapted to the mounting portion 14, the mounting plate 23 is spliced with the mounting portion 14, the housing 1 is provided with the second locking mechanism 5, the mounting plate 23 is limited in the mounting portion 14 through the second locking mechanism 5, the rubber tube 2 is inserted into the mounting portion 14 through the mounting plate 23 to be mounted on the housing 1, the mounting plate 23 is limited in the mounting portion 14 through the second locking mechanism 5 arranged on the housing 1, the rubber tube 2 cannot be removed from the housing 1 when the second locking mechanism 5 is connected with the mounting plate 23, and when the second locking mechanism 5 is separated from the mounting plate 23, the limitation of the mounting plate 23 is released, the rubber tube 2 can be removed from the housing 1, and the mounting and the dismounting are labor-saving and convenient.

More specifically, as shown in fig. 6 and 7, the second locking mechanism 5 includes a push button 51 and a fifth elastic member 52, the housing 1 is provided with a second chute 15 slidably matched with the push button 51, the second locking mechanism 5 limits the mounting plate 23 through the push button 51, when a user applies a force to the push button 51, the push button 51 slides in the second chute 15 in a direction away from the mounting plate 23, so that the push button 51 is separated from the mounting plate 23 to release the limit of the mounting plate 23, at this time, the fifth elastic member 52 is in a compression stress state, when the user removes the force to the push button 51, the push button 51 slides and resets along the second chute 15 under the action of the fifth elastic member 52, and the push button 51 is connected with the mounting plate 23 to achieve the limit, so that the structure is simple and the use is labor-saving.

The present utility model is not limited to the above-described preferred embodiments, and any person who can obtain other various products under the teaching of the present utility model, however, any change in shape or structure of the product is within the scope of the present utility model, and all the products having the same or similar technical solutions as the present application are included.

Claims (15)

1. The utility model provides a glue gun, includes casing (1) and rubber tube (2) that are connected with casing (1), install push rod mechanism (3) in casing (1) sliding, be equipped with first elastic component (34) between push rod mechanism (3) and casing (1), the one end and push rod mechanism (3) butt of first elastic component (34), the other end and casing (1) butt of first elastic component (34), push rod mechanism (3) promote rubber tube (2) out through first elastic component (34), characterized in that install first locking mechanism (4) on casing (1), be provided with first spacing portion (31) that are fit with first locking mechanism (4) on push rod mechanism (3), when first locking mechanism (4) are connected with first spacing portion (31), first locking mechanism (4) lock push rod mechanism (3), push rod mechanism (3) are locked and are stopped out the rubber, when first locking mechanism (4) are disengaged with first spacing portion (31) and are released first locking mechanism (4) and are kept out the rubber tube (2) through the operation of first locking mechanism (4) continuously, the operation of pushing rod mechanism (3) is kept for the rubber tube (2), the user controls the time for the first locking mechanism (4) to be separated from the first limiting part (31) through the operation part, namely, the unlocking period.

2. A glue gun according to claim 1, characterized in that the first locking mechanism (4) comprises a transmission member (41) and a limiting rod (42), the first limiting part (31) is provided with a plurality of locking positions (311) which are matched with the limiting rod (42), the locking positions (311) are arranged along the length direction of the push rod mechanism (3), the transmission member (41) is driven by an operation part to drive the limiting rod (42) to enter or leave the locking positions (311), the limiting rod (42) is connected with a second elastic member (45), the limiting rod (42) is reset through the second elastic member (45), the limiting rod (42) enters the locking positions (311) so as to lock the push rod mechanism (3), and the limiting rod (42) is separated from the locking positions (311) so as to unlock the push rod mechanism (3).

3. A glue gun according to claim 2, wherein the first locking mechanism (4) further comprises a mounting seat (43), the transmission member (41) and the limiting rod (42) are both mounted on the mounting seat (43), the limiting rod (42) is axially slidably matched with the mounting seat (43), the mounting seat (43) is provided with a first mounting hole (431), one end of the limiting rod (42) is limited in the mounting seat (43) through the first mounting hole (431), and the other end of the limiting rod (42) extends out through the first mounting hole (431) to enter or leave the locking position (311).

4. A glue gun according to claim 3, wherein the mounting base (43) is provided with a pressing member (44), the pressing member (44) is configured as the operation part, the mounting base (43) is provided with a second mounting hole (432), one end of the pressing member (44) penetrates through the second mounting hole (432) to extend out, and the other end of the pressing member (44) is limited in the mounting base (43) through a first mounting hole (431) and is connected with the transmission member (41), and the pressing member (44) is forced to drive the limiting rod (42) to slide through the transmission member (41).

5. The glue gun according to claim 4, wherein the transmission member (41) comprises a first slider (411) and a second slider (412), the limit rod (42) is mounted between the first slider (411) and the second slider (412), one side of the limit rod (42) is abutted against the first slider (411), the other side of the limit rod (42) is abutted against the second slider (412), when the first slider (411) and the second slider (412) move in opposite directions, the limit rod (42) is separated from the locking position (311) under the action of the first slider (411) and the second slider (412), and when the first slider (411) and the second slider (412) move in opposite directions, the limit rod (42) enters the locking position (311) under the action of the second elastic member (45).

6. The glue gun according to claim 5, wherein the pressing member (44) is provided with a first connecting rod (441) and a second connecting rod (442), the first connecting rod (441) is abutted against the first slider (411), the second connecting rod (442) is abutted against the second slider (412), and when the pressing member (44) slides to the side where the limit lever (42) is located under the force, the first slider (411) and the second slider (412) are moved toward each other under the force of the first connecting rod (441) and the second connecting rod (442).

7. The glue gun according to claim 6, wherein the second elastic member (45) is installed between the limiting rod (42) and the pressing member (44), one end of the second elastic member (45) abuts against the pressing member (44), the other end of the second elastic member (45) abuts against the limiting rod (42), and the pressing member (44) and the limiting rod (42) are automatically reset through the second elastic member (45).

8. The glue gun according to claim 6, wherein the first slider (411) is provided with a first guiding surface (4111) and a second guiding surface (4112), the first guiding surface (4111) is abutted against the bottom of the first link (441), the second guiding surface (4112) is abutted against one side of the stop lever (42), and the first guiding surface (4111) and the second guiding surface (4112) are reversely arranged; the second sliding block (412) is provided with a third guide surface (4121) and a fourth guide surface (4122), the third guide surface (4121) is connected with the bottom of the second connecting rod (442), the fourth guide surface (4122) is abutted with the other side of the limiting rod (42), and the third guide surface (4121) and the fourth guide surface (4122) are reversely arranged.

9. A glue gun according to claim 6, wherein a third elastic member (46) is mounted in the mounting seat (43), one end of the third elastic member (46) is abutted against the bottom of the mounting seat (43), the other end of the third elastic member (46) is abutted against the bottom of the pressing member (44), and at least one third elastic member (46) is arranged.

10. A glue gun according to any one of claims 6-9, wherein the housing (1) is provided with a holding part (11), the holding part (11) is rotatably connected with a handle (12), the handle (12) is abutted against a pressing member (44), the handle (12) is configured as the operating part, the handle (12) is forced to rotate to act on the pressing member (44) so that the pressing member (44) slides towards the side of the limit rod (42), and the pressing member (44) drives the limit rod (42) to be separated from the locking position (311) through a transmission member (41); the handle (12) is connected with a fourth elastic piece (16), and the handle (12) is reset through the rotation of the fourth elastic piece (16).

11. The glue gun according to claim 4, wherein the outer wall of the pressing member (44) is provided with a first protrusion (443), the inner wall of the mounting seat (43) is provided with a second limiting part (433), the pressing member (44) is connected with the second limiting part (433) through the first protrusion (443) to limit sliding, the pressing member (44) is in circumferential rotation fit with the transmission member (41), the pressing member (44) rotates relative to the mounting seat (43) through the transmission member (41) to enable the first protrusion (443) to enter or leave the second limiting part (433), when the first protrusion (443) enters the second limiting part (433), the limiting rod (42) keeps extending to enter the locking position (311), and when the first protrusion (443) leaves the second limiting part (433), the limiting rod (42) keeps retracting to leave the locking position (311); the pressing piece (44), the transmission piece (41) and the limiting rod (42) are sequentially sleeved up and down, the pressing piece (44) is provided with a first rotating portion (444), the transmission piece (41) is provided with a second rotating portion (413), and the pressing piece (44) is circumferentially matched with the second rotating portion (413) through the first rotating portion (444) in a rotating mode so as to rotate relative to the mounting seat (43).

12. Glue gun according to claim 1, characterized in that the push rod mechanism (3) is provided with a reset piece (32), the shell (1) is provided with a first chute (13) matched with the reset piece (32), the reset piece (32) penetrates through the first chute (13) to extend out and is in sliding fit with the first chute (13), and the push rod mechanism (3) is stressed by the reset piece (32) to slide and reset along the first chute (13).

13. A glue gun according to claim 12, wherein the glue tube (2) comprises a first glue tube (21) and a second glue tube (22), the push rod mechanism (3) comprises a first push rod (35) corresponding to the first glue tube (21) and a second push rod (36) corresponding to the second glue tube (22), a connecting piece (33) is arranged between the first push rod (35) and the second push rod (36), the first limiting part (31) is positioned on the front side of the connecting piece (33), and the reset piece (32) is arranged on the connecting piece (33).

14. Glue gun according to claim 1, characterized in that the housing (1) is provided with a mounting part (14), the glue tube (2) is provided with a mounting plate (23) adapted to the mounting part (14), the mounting plate (23) is spliced with the mounting part (14), the housing (1) is provided with a second locking mechanism (5), and the mounting plate (23) is limited in the mounting part (14) through the second locking mechanism (5).

15. Glue gun according to claim 14, wherein the second locking mechanism (5) comprises a push button (51) and a fifth elastic element (52), a second sliding groove (15) in sliding fit with the push button (51) is arranged on the shell (1), the push button (51) slides through the second sliding groove (15), and the push button (51) is slidably reset through the fifth elastic element (52).