Hot melting tool and hot melting tool driving method

Abstract

The invention discloses a hot melting tool and a hot melting tool driving method. The hot melting tool comprises a shell, a sliding frame, a main elastic piece, a pressing key and a one-way limiting structure, when the pressing key is in a non-pressing state, the one-way limiting structure is in one-way clamping connection with the sliding frame, and the sliding frame is locked and stopped in the moving direction towards the head end of the shell; when the pressing key is in a pressed state, the one-way limiting structure unlocks and releases the sliding frame, and the sliding frame can be pushed by the main elastic piece to move towards the head end of the shell. A plurality of linked mechanism kinematic pairs are arranged in the structure, the use experience of electric glue feeding is achieved completely through a mechanical structure, a novel glue outlet mode of feeding while pressing is provided, the gluing operation comfort is improved, and glue stick unlocking and rapid returning are achieved through pulling of a sliding gun bolt, so that rapid mounting of the glue stick is completed.

Description

Technical Field

[0001] The invention relates to a hot melt tool, and in particular to a hot melt tool and a hot melt tool driving method suitable for the hot melt tool. Background Art

[0002] Hot melt tools such as hot melt glue guns and hot melt glue pens heat the glue stick through a heating structure to melt the solid glue stick, thereby bonding objects. When installing, the glue stick is installed at the tail end of the shell of the hot melt tool. When using, the glue stick is clamped by the push structure and continuously pushed toward the head end of the shell to discharge glue.

[0003] Hot melt glue gun is a commonly used hot melt tool. The propulsion structure in the traditional hot melt glue gun is triggered by pressing the trigger to clamp and push the action, and the trigger is used to deliver glue in a segmented transmission manner. The glue delivery method in the prior art has the following defects: First, the glue pushing stroke is limited, and the glue stick needs to be pressed repeatedly to maintain continuous glue pushing, which increases hand fatigue. At the same time, the gun body will shake when pressed repeatedly, which increases the instability of the gluing point and reduces the gluing effect; second, its power transmission curve is an arc transmission, and the direction of the trigger transmission force vector changes all the time. Under normal circumstances, the force that pushes the glue stick horizontally changes from small to large and then to small. The motion state of the glue stick is unstable, which is easy to squeeze glue, deform, and have a poor feel; third, since the trigger rotates axially, there is an inconsistency in the force application point when the finger presses, resulting in an inconsistent force arm, uneven force on the finger, and a poor feel. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a hot melt tool with a simplified structure, simple glue feeding operation, fast and stable operation, and a hot melt tool driving method suitable for the hot melt tool.

[0005] In order to solve the above technical problems, the technical solution of the present invention is: a hot melt tool comprises a housing, and further comprises: A sliding frame is reciprocatingly arranged between the head end and the tail end of the housing, and a glue stick locking piece is arranged on the sliding frame; A main elastic member, disposed between the sliding frame and the end of the housing, capable of driving the sliding frame to move from the rear end to the front end of the housing; A press button connected to the housing; A one-way limiting structure, provided between the push button and the sliding frame, to one-way clamp the sliding frame or release the sliding frame; When the push button is in a pressed state, the one-way limiting structure unidirectionally clamps the sliding frame, locking and stopping the sliding frame from moving toward the front end of the shell; when the push button is in an unpressed state, the one-way limiting structure unlocks and releases the sliding frame, and the sliding frame can move toward the front end of the shell driven by the main elastic member.

[0006] As a preferred technical solution, a sliding bolt is slidably provided in the housing along the front and rear end directions, and one end of the sliding bolt is connected to the glue stick locking piece.

[0007] As a preferred technical solution, the glue stick locking piece is rotatably connected to the sliding frame, and the glue stick locking piece can rotate relative to the sliding bolt.

[0008] As a preferred technical solution, the one-way limiting structure includes a lifting frame and a sliding plate. The lifting frame is connected to the shell for sliding lifting, and one end is connected to the push button and can slide and lift along the shell following the action of the push button. The sliding plate is fixedly connected to the sliding frame and slides in the front and rear directions in the shell. The sliding plate and the lifting frame can be unidirectionally engaged or disengaged according to the lifting position of the lifting frame.

[0009] As a preferred technical solution, a one-way clamping block is provided at the top of the lifting frame, and a plurality of one-way tooth grooves corresponding to the one-way clamping block are arranged at the bottom of the sliding plate, and when the one-way clamping block contacts the one-way tooth groove, the two are one-way clamped; Or a plurality of one-way tooth grooves are arranged at the top of the lifting frame, and a one-way clamping block corresponding to the one-way tooth grooves is provided at the bottom of the sliding plate, and when the one-way clamping block contacts the one-way tooth grooves, the two are one-way clamped.

[0010] As a preferred technical solution, the glue stick locking piece is provided with a glue stick channel with an opening larger than the diameter of the glue stick along the glue discharge direction of the glue stick, and the inner surface of the glue stick channel is provided with a compression locking surface adapted to the surface of the glue stick; a locking elastic piece is provided between the end of the glue stick locking piece connected to the sliding gun bolt and the sliding frame.

[0011] As a preferred technical solution, an unlocking stopper is provided on the inner wall near the rear end of the shell, and the unlocking stopper cooperates with the side of one end of the glue stick locking piece away from the sliding bolt, and the unlocking stopper and the locking elastic piece are located on both sides of the glue stick channel. When the glue stick locking piece abuts against the unlocking stopper, the unlocking stopper can force the glue stick locking piece to overcome the locking elastic piece and rotate in the opposite direction to release the glue stick.

[0012] As a preferred technical solution, the sliding bolt is connected with a second pin shaft, the glue stick locking piece is provided with a first slide groove, and the second pin shaft is slidably limited in the first slide groove; Or the sliding bolt is provided with a sliding groove 1, the glue stick locking piece is connected with a pin 2, and the pin 2 is slidably limited in the sliding groove 1.

[0013] As a preferred technical solution, the lifting frame is connected with a pin shaft 3, the push button is provided with a slide groove 2, the pin shaft 3 is limited in the slide groove 2, and when the push button slides, the slide groove 2 pushes the lifting frame to rise and fall through the pin shaft 3; Or the push button is connected with a pin shaft three, the lifting frame is provided with a slide groove two, the pin shaft three is limited in the slide groove two, and when the push button slides, the pin shaft three pushes the lifting frame to rise and fall through the slide groove two.

[0014] The present invention also provides a hot melt tool driving method, which is applicable to the above hot melt tool and comprises the following steps: S1, locked: the push button is in a non-pressed state, the one-way limiting structure is one-way engaged with the sliding frame, and the sliding frame is locked and stopped in the direction of moving toward the front end of the housing; S2. Unlocking: the push button is in a pressed state, the one-way limiting structure is unlocked to release the sliding frame, and the sliding frame can move toward the front end of the shell driven by the main elastic member.

[0015] Due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows: the structure of the present invention has multiple linked mechanism motion pairs inside, and the user experience of electric glue delivery is completely realized through the mechanical structure, providing a new type of glue delivery method that can be delivered as soon as it is pressed, improving the comfort of glue application operation, and realizing the unlocking and rapid return of the glue stick by pulling the sliding gun bolt, so as to complete the rapid installation of the glue stick, as follows: 1. The present invention adopts a new glue feeding logic, which controls the glue feeding state of the glue stick by the pressing state of the pressing button. The glue feeding state is synchronized with the pressing state. When the user presses the pressing button, the glue feeding can be started. When the pressing is continued, the glue feeding state is continued under the action of the main elastic member, and the glue can be automatically and slowly fed to ensure stable glue feeding and improve the gluing effect. When the pressing button is pressed, the continuous glue discharge process of the glue stick is achieved by the push of the main elastic member, so only a small pressing force is required to meet the continuous glue discharge demand, which can reduce hand operation fatigue and the movement state of the silicone stick is relatively stable. When the pressing stops at any time, the automatic glue feeding process also stops at the same time. Second, the present invention also combines the design of the glue discharge by pressing a button with the sliding bolt. During the glue discharge process, the sliding bolt can slide synchronously toward the front end of the shell, and the glue feeding process can be observed intuitively. When the top sliding bolt moves to the front end, it means that a longer section of the glue stick has been exhausted, and at this time, it only needs to pull the sliding bolt backward to quickly return to its original position and cyclically feed the next glue stick. The design of the sliding bolt can facilitate users to operate quickly and accurately, and can realize the rapid docking of the glue sticks by pulling the sliding bolt to avoid interruption of glue discharge; and the sliding bolt is combined with the glue stick locking piece, and the glue stick locking piece can be controlled to unlock the glue stick. When the previous glue stick is exhausted, the sliding bolt is pulled backward at the moment to first unlock the previous glue stick and then quickly return to the rear end. The user can freely and quickly install the next glue stick, thereby realizing the rapid installation of the next glue stick. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following drawings are only intended to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.

[0017] Figure 1 is a schematic structural diagram of an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of an embodiment of the present invention after the glue stick is inserted and before locking; Figure 3 is an exploded view of the internal structure of an embodiment of the present invention; Figure 4 yes Figure 2 An enlarged schematic diagram of A in FIG. Figure 5 is a schematic diagram of the interior of a housing according to an embodiment of the present invention; Figure 6 2 is a schematic structural diagram of a glue stick locking member according to an embodiment of the present invention; Figure 7 is a structural cross-sectional view of a glue stick locking member according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the glue stick after locking according to an embodiment of the present invention; Fig. 9 This is a structural principle diagram of an embodiment of the present invention in which glue delivery is completed and the glue stick is locked; Fig.10 This is a schematic diagram of the structure of the glue stick after unlocking according to an embodiment of the present invention; Fig.11 Schematic diagram of the cooperation between the one-way clamping block and the one-way tooth groove in the second embodiment of the present invention; Fig.12 This is a schematic diagram of the principle of implementing one-way card connection in the third embodiment of the present invention; In the figure: 1-shell; 11-key slide; 12-lifting frame slide; 13-sliding frame slide; 14-retaining ring; 15-bolt opening; 16-bolt slide; 2-pressing button; 21-key protrusion; 22-key compression spring; 23-slideway two; 3-lifting frame; 31-lifting frame protrusion; 32-pin shaft three; 33-one-way block; 4-sliding plate; 41-one-way tooth groove; 5-sliding frame; 51-sliding frame protrusion; 52-directional column; 6-main elastic member; 7-glue stick locking member; 71-glue stick channel; 72-pin shaft one; 73-pressing locking surface; 74-slideway one; 8-sliding bolt; 81-pin shaft two; 82-bolt protrusion; 9-locking elastic member; 10-unlocking block. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with the accompanying drawings and examples. In the following detailed description, certain exemplary embodiments of the present invention are described only by way of illustration. Needless to say, those of ordinary skill in the art will recognize that the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and are not intended to limit the scope of protection of the claims.

[0019] Embodiment 1: like Figure 1 and Figure 2 As shown, the hot melt tool includes a housing 1, a push button 2, a lifting frame 3, a sliding plate 4, a sliding frame 5, a main elastic member 6, a glue stick locking member 7 and a sliding bolt 8. In this embodiment, the hot melt tool is a hot melt glue gun, but it can also be other similar tools, such as a hot melt glue pen with a trigger pressing function.

[0020] The sliding plate 4 and the sliding frame 5 are fixedly connected by bolts, and the two are integrated and can slide forward and backward along the shell 1 at the same time. The sliding plate 4 is used to cooperate with the lifting frame 3, and the sliding frame 5 is used to install the glue stick locking member 7. The lifting frame 3 is also connected to the pressing button 2, and the pressing action of the pressing button 2 drives the lifting frame 3 to slide and rise. There is a matching relationship between the lifting frame 3 and the sliding plate 4, forming a one-way limit structure, which is used to unidirectionally clamp the sliding frame 5 or release the sliding frame 5. The pressing button 2 is used as a trigger structure for the start of the glue feeding action. When the pressing button 2 is in an unpressed state, the sliding frame 5 is unidirectionally clamped through the cooperation between the lifting frame 3 and the sliding plate 4, and the direction of moving toward the front end of the shell 1 is locked and stopped, but it can move toward the rear end of the shell 1; when the pressing button 2 is in a pressed state, the cooperation between the lifting frame 3 and the sliding plate 4 is released, and the sliding frame 5 is released and can move toward the front end of the shell 1 under the push of the main elastic member 7.

[0021] See also Figures 2 to 5The push button 2 is arranged near the front side of the handle of the housing 1. The front half of the push button 2 is exposed to the outside, which is convenient for hand pressing. The rear half of the push button 2 is slidably installed inside the housing 1. A key slide 11 is arranged inside the housing 1. The push button 2 is provided with a key protrusion 21 that slides forward and backward along the key slide 11. The push button 2 can only be pressed in the forward and backward direction through the cooperation between the key slide 11 and the key protrusion 21. A key compression spring 22 is also installed between the push button 2 and the housing 1. After the push button 2 is released after being pressed, the key compression spring 22 can push the push button 2 to slide back to the front end.

[0022] See also Figures 2 to 5 The lifting frame 3 is connected to the housing 1 for sliding and lifting. The housing 1 is provided with a vertical lifting frame slide 12. The lifting frame 3 is provided with a lifting frame protrusion 31 that slides along the lifting frame slide 12. The lifting frame 3 slides up and down by the cooperation between the lifting frame slide 12 and the lifting frame protrusion 31. The lifting frame 3 is connected with a pin shaft 32. The pressing button 2 is provided with a slide groove 23. The slide groove 23 is tilted. The pin shaft 3 32 is limited in the slide groove 23. When the pressing button 2 slides, the slide groove 23 pushes the lifting frame 3 to move up and down through the pin shaft 3 32.

[0023] The top end of the lifting frame 3 is used in conjunction with the sliding plate 4, and the bottom end of the lifting frame 3 is connected to the pressing button 2 and can slide and rise and fall along the shell 1 following the action of pressing the button 2. The sliding plate 4 and the lifting frame 3 can be connected in conjunction with each other according to the lifting position of the lifting frame 3. When the pressing button 2 is in an unpressed state, the pin shaft three 32 is located at the highest point of the slide groove two 23. At this time, the lifting frame 3 is located at the highest point, and the lifting frame 3 is unidirectionally engaged with the sliding plate 4. At this time, the sliding plate 4 can move relative to the lifting frame 3 toward the rear end of the shell 1. When the pressing button 2 is in a pressed state, the slide groove two 23 enables the lifting frame 3 to slide downward through the pin shaft three 32, and the lifting frame 3 slides downward and disengages from the sliding plate 4.

[0024] The top of the lifting frame 3 is provided with a one-way block 33, and the bottom of the sliding plate 4 is provided with a plurality of one-way tooth grooves 41 corresponding to the one-way block 33. When the one-way block 33 contacts the one-way tooth grooves 41, the two are one-way engaged, and the sliding plate 4 is locked and stopped in the direction of moving toward the front end of the housing 1, and can move relative to the lifting frame 3 toward the rear end of the housing 1. Of course, the positions of the one-way tooth grooves 41 and the one-way block 33 can be exchanged, that is, the top of the lifting frame 3 is provided with a plurality of one-way tooth grooves 41, and the bottom of the sliding plate 4 is provided with a one-way block 33 corresponding to the one-way tooth grooves 41. When the one-way block 33 contacts the one-way tooth grooves 41, the two are one-way engaged.

[0025] See also Figure 3In this embodiment, the one-way tooth groove 41 is a one-way triangular tooth groove, and the one-way clamping block 33 is a triangular clamping block that cooperates with the triangular tooth groove. The triangular tooth groove and the triangular clamping block form a ratchet-type one-way cooperation. A plurality of triangular clamping blocks are arranged at the top of the lifting frame 3, and there is at least one triangular clamping block, preferably two, one at the front end and one at the rear end, to ensure stable clamping. Of course, there can also be three, one at the front end, one in the middle and one at the rear end. The bottom end of the sliding plate 4 is arranged with a plurality of triangular tooth grooves that correspond to the triangular clamping block at the top of the lifting frame 3. The triangular clamping block at the bottom end of the sliding plate 4 can adopt a high-strength one-way ratchet, that is, the sliding plate 4 is a one-way ratchet bar, which can realize the one-way sliding of the sliding plate 4. When the triangular clamping block contacts the triangular tooth groove, the sliding plate 4 can move relative to the one-way clamping block 33 lifting seat toward the rear end of the shell 1. When the push button 2 is pressed, the sliding frame of the one-way block 33 rises to the highest point and contacts the sliding plate 4. At this time, the sliding plate 4 is stuck toward the front end direction of the shell 1, but when the sliding plate 4 is subjected to a certain thrust (pushed by the sliding bolt 8), it can move back to the rear end of the shell 1.

[0026] See also Figures 2 to 5 The sliding plate 4 and the sliding frame 5 are fixedly connected by bolts. The two are integrated and can slide forward and backward along the shell 1 at the same time. The shell 1 is provided with a sliding frame slot 13, and the sliding frame 5 is provided with a sliding frame protrusion 51 that slides along the sliding frame slot 13 in the forward and backward direction. Through the cooperation between the sliding frame slot 13 and the sliding frame protrusion 51, the sliding frame 5 and the sliding plate 4 can only slide along the forward and backward direction of the shell 1.

[0027] See also Figures 2 to 5 The main elastic member 6 is arranged between the sliding frame 5 and the housing 1, and can drive the sliding frame 5 and the sliding plate 4 to slide from the rear end of the housing 1 to the front end. The sliding frame 5 is provided with an orientation column 52 on one side of the rear end close to the housing 1. The center of the orientation column 52 is provided with an installation channel that is convenient for the glue stick to pass through. The installation channel is larger than the diameter of the glue stick, which is convenient for the glue stick to pass freely. One end of the main elastic member 6 is sleeved on the outside of the orientation column 52 and abuts on the sliding frame 5, and the other end of the main elastic member 6 abuts on the retaining ring 14 in the housing 1. The orientation column 52 cooperates with the retaining ring 14 to ensure that the main elastic member 6 does not shift. In this embodiment, the main elastic member 6 is an energy storage compression spring, which is arranged between the sliding frame 5 and the rear end of the housing 1. When the sliding plate 4 is disengaged from the one-way clamping block 33, the main elastic member 7 can push the sliding frame 5, the sliding plate 4, the glue stick locking member 7 and the sliding bolt 8 to slide toward the front of the housing 1 as a whole, thereby realizing the automatic glue feeding process. Of course, the main elastic member 6 can be a tension spring, which is arranged between the sliding frame 5 and the front end of the shell 1, and can pull the sliding frame 5 and the sliding plate 4 to slide from the rear end to the front end of the shell 1 to realize the automatic glue feeding process.

[0028] See also Figures 2 to 6The glue stick locking member 7 is used to lock the glue stick. The glue stick locking member 7 is provided with a glue stick channel 71 with an opening larger than the diameter of the glue stick along the glue discharge direction of the glue stick. The glue stick locking member 7 is rotatably connected to the sliding frame 5. The middle parts of the left and right sides of the glue stick locking member 7 are rotatably connected to the sliding frame 5 through a pin shaft 72 and can rotate around the sliding frame 5 clockwise and counterclockwise. A locking elastic member 9 is provided between the end of the glue stick locking member 7 connected to the sliding bolt 8 relative to the sliding frame 5 and the sliding frame 5. The locking elastic member 9 can push the glue stick locking member 7 counterclockwise (with a rotation direction) toward the front and rear ends of the housing 1. Figure 2 The locking elastic member 9 is a locking compression spring, which can also be an elastic spring sheet. The glue stick locking member 7 is provided with a compression spring installation groove 1, and the sliding frame 5 is provided with a compression spring installation groove 2. The two ends of the locking compression spring are respectively installed in the compression spring installation groove 1 and the compression spring installation groove 2. When the locking elastic member 9 is compressed, the glue stick locking member 7 can be rotated clockwise to abut against the sliding frame 5, and the glue stick locking member 7 can be in a vertical state (see Figure 2 ), at this time, the glue stick channel 71 is opposite to the installation channel, and the glue stick can be freely placed in the glue stick from the rear end of the shell 1. When the locking elastic member 9 is freely released, the glue stick locking member 7 rotates counterclockwise, and the glue stick locking member 7 is inclined toward the front end of the shell 1 (see Figure 8 , Fig. 9 ), at this time, the glue stick channel 71 is no longer directly opposite the installation channel, and the glue stick locking member 7 gradually clamps the surface of the glue stick to lock the glue stick. When the glue stick locking member 7 is restored from the tilted state to the vertical state (see Fig.10 ), release the glue stick.

[0029] The glue stick passage 71 may be a round hole or a square hole, or may be other groove-shaped structures, as long as it ensures that the glue stick can be sleeved in the glue stick locking member 7 .

[0030] In order to ensure the locking effect of the glue stick locking member 7, a compression locking surface 73 is provided on the inner surface of the glue stick channel 71. The compression locking surface 73 is an arc-shaped surface adapted to the surface of the glue stick. The compression locking surface 73 is in frictional contact with the surface of the glue stick to achieve the purpose of locking the glue stick. The compression locking surface 73 can be provided with one or two. The specific schemes include: 1. There is one compression locking surface 73, which is provided at the top of the glue stick channel 71 and close to the front end of the shell 1; 2. There is one compression locking surface 73, which is provided at the bottom of the glue stick channel 71 and close to the rear end of the shell 1; 3. See Figure 6 and Figure 7There are two compression locking surfaces 73, one of which is located at the top of the glue stick channel 71 and close to the front end of the housing 1, and the other is located at the bottom of the glue stick channel 71 and close to the rear end of the housing 1. The above three methods can all achieve the locking effect of the glue stick. When the compression locking surface 73 is only located at the top or the bottom, the single-sided locking of the glue stick can be achieved; and when a compression locking surface 73 is provided on the upper and lower surfaces of the glue stick respectively, double-sided locking can be achieved, which not only has a better locking effect on the glue stick and makes the glue discharge more stable, but also the upper and lower cooperation can prevent the glue stick from being deformed, damaged, and broken, and the user no longer needs to worry about excessive pressure causing damage to the glue stick. At the same time, the two-point cooperation can stably lock glue sticks of different diameters, which is suitable for glue sticks of different specifications.

[0031] The compression locking surface 73 is an inwardly concave arc surface, which gradually expands outward from the inside of the glue stick locking piece 7 toward the outer end surface, and the compression locking surface 73 can be adapted to the outer peripheral surface of the glue stick.

[0032] See also Figure 2 , Figure 4 and Figure 5 An unlocking stopper 10 is fixedly mounted on the inner wall surface of the housing 1. The unlocking stopper 10 is a convex block protruding from the inner wall of the housing 1. The unlocking stopper 10 is located at the rear end of the housing 1 relative to the glue stick locking member 7, and cooperates with the side of the end of the glue stick locking member 7 away from the sliding chamber bolt 8. The unlocking stopper 10 extends through the opening on the surface of the sliding frame 5 to the inside of the sliding frame 5. The unlocking stopper 10 and the locking elastic member 9 are located on both sides of the glue stick channel 71, that is, they cooperate with the end of the glue stick locking member 7 away from the sliding bolt 8. When the glue stick locking member 7 slides toward the rear end of the housing 1 and the end of the glue stick locking member 7 away from the sliding bolt 8 abuts against the unlocking stopper 10, the glue stick locking member 7 is restricted by the unlocking stopper 10. As the glue stick locking member 7 continues to slide, the glue stick locking member 7 can compress the locking elastic member 9 to move clockwise (with a rotation of 0.05 mm) toward the front and rear ends of the housing 1. Figure 2 , Figure 4 When the glue stick locking member 7 slides toward the front end of the housing 1 and disengages from the unlocking stopper 10, the locking elastic member 9 releases and pushes the glue stick locking member 7 to rotate counterclockwise to lock it, and the glue stick is clamped at this time.

[0033] The above-mentioned shell 1, push button 2, lifting frame 3, sliding plate 4, sliding frame 5, and main elastic member 6 are used in combination to realize a glue dispensing method of pressing and delivering. The glue delivery state of the glue stick is controlled by the pressing state of the push button, and the glue delivery state is synchronized with the pressing state. When the user presses the push button, the glue delivery can be started. When the pressing is continued, the glue delivery state continues under the action of the main elastic member, and the glue can be automatically and slowly delivered to ensure stable glue delivery and improve the gluing effect; and when the push button is pressed, the continuous glue delivery process of the glue stick is achieved by the push of the main elastic member, so only a small pressing force is required to meet the continuous glue delivery demand, which can reduce hand operation fatigue and push the movement state of the silicone stick to be relatively stable; when the pressing stops at any time, the automatic glue delivery process also stops at the same time.

[0034] On the basis of the above structure, a structure of sliding bolt 8 is added. Figures 1 to 5 The sliding bolt 8 is connected to the housing 1 in a sliding manner in the front-to-back direction. One end of the sliding bolt 8 is located outside the housing 1, and one end of the sliding bolt 8 is located inside the housing 1 and connected to the glue stick locking member 7. The glue stick locking member 7 can rotate relative to the sliding bolt 8. When the sliding bolt 8 is pulled toward the rear end of the housing 1, the locking elastic member 9 can be rotated toward the rear end of the housing 1 to unlock and release, and the glue stick locking member 7 and the one-way tooth groove 41 sliding frame 5 can be pulled to slide and reset to the rear end of the housing 1. Due to many factors such as small rotation damping, small rotation locking spring force value of the locking elastic member 9, and small mass of the separate glue stick locking member 7, when the sliding bolt 8 is pulled, the rotation lock of the glue stick locking member 7 is automatically and preferentially released, and then the sliding frame 5 is pushed to move toward the rear end of the housing 1 to compress the main elastic member 7.

[0035] The bottom end of the sliding bolt 8 is connected with a pin shaft 2 81 , and a slide groove 1 74 is provided on the glue stick locking piece 7 . The pin shaft 2 81 is limited in the slide groove 1 74 . When the sliding bolt 8 slides, the pin shaft 2 81 and the slide groove 1 74 push the glue stick locking piece 7 to rotate.

[0036] The sliding bolt 8 includes a bolt rod, a bolt opening 15 is provided on the surface of the shell 1, the top end of the bolt rod extends through the bolt opening 15 to the outside of the shell 1, and the top end is connected to a bolt cover which is convenient for the user to operate by hand, the bottom end of the bolt rod is located in the shell 1 and is provided with a bolt seat, the bolt seat and the shell 1 are connected to slide back and forth, a bolt slot 16 is provided in the shell 1, and a bolt protrusion 82 which slides with the bolt slot 16 is provided on the bolt seat, and the sliding bolt 8 can slide back and forth along the shell 1 through the cooperation between the bolt slot 16 and the bolt protrusion 82.

[0037] The present invention also combines the design of the glue discharge by pressing a button with the sliding bolt. During the glue discharge process, the sliding bolt can slide synchronously toward the front end of the shell body, and the glue feeding process can be observed intuitively. When the top sliding bolt moves to the front end, it means that a longer section of the glue stick has been exhausted, and at this time, it only needs to pull the sliding bolt backward to quickly return to its original position and cyclically feed the next glue stick. The design of the sliding bolt can facilitate users to operate quickly and accurately, and can realize the rapid docking of glue sticks by pulling the sliding bolt to avoid interruption of glue discharge; and the sliding bolt is combined with the glue stick locking piece, and the glue stick locking piece can be controlled to unlock the glue stick. When the previous glue stick is exhausted, the sliding bolt is pulled backward at the moment to first unlock the previous glue stick and then quickly return to the rear end. The user can freely and quickly install the next glue stick, thereby realizing the rapid installation of the next glue stick.

[0038] In this embodiment, the distance of the bolt opening 15 is equal to the glue feeding distance, which is 4 to 15 times the single pressing stroke of a conventional glue gun, and the glue feeding can be stopped at any time. The present application can achieve continuous glue feeding with a single press through mechanical structure design, which not only reduces repeated pressing, but also stabilizes the glue feeding movement state.

[0039] The working principle of this embodiment is: Before inserting the glue stick, the push button 2 is not pressed, the sliding bolt 8, the glue stick locking member 7, the sliding frame 5 and the sliding plate 4 are all located at the rear end of the housing 1, the main elastic member 6 is compressed, and the glue stick locking member 7 is against the unlocking stopper 10, the locking elastic member 9 is compressed, and the glue stick locking member 7 is in a vertical state and fits in the plane of the sliding frame 5. At this time, the glue stick channel 71 has the largest opening and can be inserted into the glue stick. The state after inserting the glue stick is shown in FIG. Figure 2 ; When the push button 2 is pressed, the lifting frame 3 is pulled to slide downward to release the sliding plate 4. At this time, the main elastic member 6 pushes the sliding frame 5, the sliding plate 4 and the glue stick locking member 7 to move toward the front end of the shell 1. When the glue stick locking member 7 moves a small distance to disengage the unlocking stopper 10, the locking elastic member 9 will push the glue stick locking member 7 forward to rotate counterclockwise and tilt. The glue stick locking member 7 gradually clamps the surface of the glue stick to achieve the locking of the glue stick. The state of the glue stick after locking is shown in FIG. Figure 8 During this process, if the pressing button 2 is continued to be pressed, the main elastic member 6 will automatically and stably push the glue stick locking member 7 to remain in the locked state, clamp the glue stick to stably feed the glue, and the sliding bolt 8 will slide steadily during the glue discharge process. The user can judge the glue feeding distance by the position of the sliding bolt 8. During this process, if the pressing button 2 is released, the lifting frame 3 slides upward and the sliding plate 4 is stuck and stopped at any time. The glue stick locking member 7 always remains in the locked state and stops. After continuing to press the pressing button 2, the whole body continues to slide toward the front end of the shell 1 until the main elastic member 6 can no longer push the whole body to continue to move forward and stop. At this time, the user can observe that the sliding bolt 8 moves to the front end and the glue feeding process is ended. For the state after the end, refer to Fig. 9 ; Finally, pull the sliding bolt 8 backwards to overcome the elastic force of the locking elastic member 9, so that the glue stick locking member 7 rotates clockwise, first releasing the lock of the glue stick by the glue stick locking member 7, and continues to rotate to a vertical state, at which time it will be in plane contact with the sliding frame 5. Fig.10 ; Continue to pull the sliding bolt 8 backward to drive the glue stick locking member 7, the sliding frame 5, and the sliding plate 4 to move backward horizontally as a whole. During this process, there is no need to press the pressing button 2. Since the sliding plate 4 and the lifting frame 3 are one-way matched, the sliding bolt 8 can drive the glue stick locking member 7, the sliding frame 5, and the sliding plate 4 to return backward as a whole. During the return process, the main elastic member 6 quickly stores energy; When the sliding bolt 8 is pulled to the rear end and the glue stick locking piece 7 is located at the rear end of the housing 1, after the sliding bolt 8 is released, the glue stick locking piece 7 is locked by the elastic force of the locking elastic piece 9 in a counterclockwise rotation. However, since the glue stick locking piece 7 contacts the unlocking stopper 10, the unlocking stopper 10 restricts the rotation of the glue stick locking piece 7. Moreover, since the sliding frame 5 is connected to the sliding plate 4, and the sliding plate 4 is stuck, the glue stick locking piece 7 will remain in the released state. At this time, the glue stick can be freely installed. See the state. Figure 2 , the next glue stick can be fed in a cycle.

[0040] A hot melt tool driving method, applicable to the hot melt tool mentioned above, comprises the following steps: S1, locking: the button 2 is in a non-pressed state, and the one-way limit structure unidirectionally engages the sliding frame 5, locking and stopping the sliding frame 5 in the direction of moving toward the front end of the housing 1; S2, unlocking: the pressing button 2 is in a pressed state, the one-way limiting structure unlocks and releases the sliding frame 5, and the sliding frame 5 can move toward the front end of the housing 1 driven by the main elastic member 6.

[0041] Embodiment 2: The structure of this embodiment is basically the same as that of the first embodiment. In this embodiment, see Fig.11 The one-way tooth groove 41 is a one-way arc-shaped tooth groove, and the one-way clamping block 33 is an arc-shaped clamping block matched with the arc-shaped tooth groove. When the arc-shaped clamping block is inserted into the arc-shaped tooth groove, the sliding plate 4 can force the lifting frame 3 to slide in one direction after descending.

[0042] Embodiment three: The structure of this embodiment is basically the same as that of the first embodiment. In the first embodiment, the lifting purpose of the lifting frame 3 is achieved by the cooperation between the bobbin 32 and the chute 23. Fig.12The lifting and lowering of the lifting frame 3 is controlled by a connecting rod, and the bottom end of the one-way block 33 is connected to the lifting frame 3 through a spring. When the pressing button 2 is not pressed, the lifting frame 3 and the one-way block 33 are moved downward as a whole through the connecting rod, and the sliding plate 4 can move toward the front end of the shell 1 under the push of the main elastic member 7; when the pressing button 2 is pressed, the lifting frame 3 is moved upward through the connecting rod, so that the one-way block 33 is clamped on the sliding plate 4. At this time, the direction of the sliding plate 4 moving toward the front end of the shell 1 can be locked and stopped. When the sliding plate 4 is pulled to move toward the rear end of the shell 1, the one-way tooth groove 41 applies pressure to the one-way block 33 to overcome the spring retraction, and at this time, the sliding plate 4 can smoothly move toward the rear end of the shell 1.

[0043] Embodiment 4: The structure of this embodiment is basically the same as that of the first embodiment. In this embodiment, a slide groove 74 is provided on the sliding bolt 8, and a pin shaft 2 81 is connected to the glue stick locking piece 7. The pin shaft 2 81 is slidably limited in the slide groove 74. When the sliding bolt 8 slides, the slide groove 74 pushes the glue stick locking piece 7 to rotate through the pin shaft 2 81.

[0044] Embodiment five: The structure of this embodiment is basically the same as that of the first embodiment. In this embodiment, a pin shaft 32 is connected to the push button 2, and a slide groove 23 is provided on the lifting frame 3. The pin shaft 32 is limited in the slide groove 23. When the push button 2 slides, the pin shaft 3 32 pushes the lifting frame 3 to rise and fall through the slide groove 23.

[0045] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A hot melt tool, comprising a housing, characterized in that: Also includes: A sliding frame is reciprocatingly arranged between the head end and the tail end of the housing, and a glue stick locking piece is arranged on the sliding frame; A main elastic member, disposed between the sliding frame and the end of the housing, capable of driving the sliding frame to move from the rear end to the front end of the housing; A press button connected to the housing; A one-way limiting structure, provided between the push button and the sliding frame, to one-way clamp the sliding frame or release the sliding frame; When the push button is in an unpressed state, the one-way limiting structure unidirectionally clamps the sliding frame, locking and stopping the sliding frame from moving toward the front end of the shell; when the push button is in a pressed state, the one-way limiting structure unlocks and releases the sliding frame, and the sliding frame can move toward the front end of the shell driven by the main elastic member.

2. The hot melt tool according to claim 1, characterized in that A sliding bolt is slidably arranged in the shell along the front and rear end directions, and one end of the sliding bolt is connected to the glue stick locking piece.

3. The hot melt tool according to claim 2, characterized in that: The glue stick locking piece is rotatably connected to the sliding frame, and the glue stick locking piece can rotate relative to the sliding gun bolt.

4. The hot melt tool according to claim 1, characterized in that: The one-way limiting structure includes a lifting frame and a sliding plate. The lifting frame is connected to the shell for sliding lifting, and one end of the lifting frame is connected to the push button and can slide and lift along the shell following the action of the push button. The sliding plate is fixedly connected to the sliding frame and slides in the front and rear directions in the shell. The sliding plate and the lifting frame can be unidirectionally engaged or disengaged according to the lifting position of the lifting frame.

5. The hot melt tool according to claim 4, characterized in that: A one-way clamping block is provided at the top of the lifting frame, and a plurality of one-way tooth grooves corresponding to the one-way clamping block are arranged at the bottom of the sliding plate, and when the one-way clamping block contacts the one-way tooth groove, the two are one-way clamped; Or a plurality of one-way tooth grooves are arranged at the top of the lifting frame, and a one-way clamping block corresponding to the one-way tooth grooves is provided at the bottom of the sliding plate, and when the one-way clamping block contacts the one-way tooth grooves, the two are one-way clamped.

6. The hot melt tool according to claim 2 or 3, characterized in that: The glue stick locking piece is provided with a glue stick channel with an opening larger than the diameter of the glue stick along the glue discharge direction of the glue stick, and the inner surface of the glue stick channel is provided with a compression locking surface adapted to the surface of the glue stick; a locking elastic piece is provided between the end of the glue stick locking piece connected to the sliding gun bolt and the sliding frame.

7. The hot melt tool according to claim 6, characterized in that: An unlocking stopper is provided on the inner wall near the rear end of the shell, and the unlocking stopper cooperates with the side of one end of the glue stick locking piece away from the sliding bolt. The unlocking stopper and the locking elastic piece are located on both sides of the glue stick channel. When the glue stick locking piece abuts against the unlocking stopper, the unlocking stopper can force the glue stick locking piece to overcome the locking elastic piece and rotate in the opposite direction to release the glue stick.

8. The hot melt tool according to claim 3, characterized in that: The sliding bolt is connected with a second pin shaft, the glue stick locking piece is provided with a first slide groove, and the second pin shaft is slidably limited in the first slide groove; Or the sliding bolt is provided with a sliding groove 1, the glue stick locking piece is connected with a pin 2, and the pin 2 is slidably limited in the sliding groove 1.

9. The hot melt tool according to claim 4, characterized in that: The lifting frame is connected with a pin shaft 3, and the push button is provided with a slide groove 2. The pin shaft 3 is limited in the slide groove 2. When the push button slides, the slide groove 2 pushes the lifting frame to rise and fall through the pin shaft 3. Or the push button is connected to a pin shaft three, the lifting frame is provided with a slide groove two, the pin shaft three is limited in the slide groove two, and when the push button slides, the pin shaft three pushes the lifting frame to rise and fall through the slide groove two.

10. A method for driving a hot melt tool, applicable to the hot melt tool according to any one of claims 1 to 9, comprising the following steps: S1, locked: the push button is in a non-pressed state, the one-way limiting structure is one-way engaged with the sliding frame, and the sliding frame is locked and stopped in the direction of moving toward the front end of the housing; S2. Unlocking: the push button is in a pressed state, the one-way limiting structure is unlocked to release the sliding frame, and the sliding frame can move toward the front end of the shell driven by the main elastic member.

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