Long-stroke glue stick pressing and pushing structure and hot melting tool

Abstract

The utility model discloses a long-stroke glue stick pressing and pushing structure and a hot melting tool, the long-stroke glue stick pressing and pushing structure is used on the hot melting tool and comprises a pushing shaft seat, a pushing sliding rail and a pressing and pushing handle; the pushing shaft seat is arranged in a shell of the hot melting tool and is used for mounting a glue stick; the pushing sliding rail is arranged in the shell in the head-tail direction of the shell, and the pushing shaft seat is installed on the pushing sliding rail in a sliding mode. One end of the pressing and pushing handle is located in the shell and can slide from the tail end to the head end of the shell to drive the pushing shaft base to slide along the pushing sliding rail for a long stroke. The device achieves the purposes of long-stroke glue pushing and stable glue pushing in a front-back free parallel movement mode, has the advantages of simple structure, low cost, simple process and the like, avoids the risks of glue stick deformation, slipping and breakage, and is excellent in use body feeling.

Description

TECHNICAL FIELD

[0001] The utility model relates to a long-stroke glue stick pressing and pushing structure and hot melt tool containing the pressing and pushing structure. BACKGROUND

[0002] Hot melt glue gun, hot melt glue pen and other hot melt tools heat the glue stick through the heating structure, so that the solid glue stick melts, thereby bonding the object. When installing, the glue stick is installed by the tail end of the shell of the hot melt tool, and when using, the glue stick is clamped and continuously pushed towards the head end of the shell by the pushing structure, and glue is discharged.

[0003] As a commonly used hot melt tool, the pushing structure in the traditional hot melt glue gun triggers clamping and pushing action by pressing the trigger, and uses trigger segmented transmission to deliver glue. At this time, the transmission glue delivery method causes limited glue pushing stroke, and the glue stick needs to be repeatedly pressed and intermittently pushed to maintain continuous glue delivery, which not only increases hand fatigue, but also causes the gun body to shake when repeatedly pressed, increases the instability of the glue point, and reduces the glue application effect. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide a long-stroke glue stick pressing and pushing structure with simplified structure, convenient operation, long glue pushing stroke and stable glue pushing, and a hot melt tool containing the pressing and pushing structure.

[0005] To solve the above technical problems, the technical scheme of the utility model is as follows: a long-stroke glue stick pressing and pushing structure for a hot melt tool, comprising:

[0006] A pushing shaft seat is arranged in the shell of the hot melt tool for installing the glue stick.

[0007] A pushing sliding rail is arranged in the shell along the head-to-tail direction of the shell, and the pushing shaft seat is slidingly installed in the pushing sliding rail.

[0008] A pressing and pushing handle is arranged in the shell, and one end of the handle can slide along the tail end to the head end of the shell to drive the pushing shaft seat to slide along the pushing sliding rail for long stroke.

[0009] As a preferred technical scheme, a rotary locking piece for locking the glue stick is hinged to the pushing shaft seat, and the rotary locking piece is provided with a glue stick channel with an opening larger than the diameter of the glue stick along the glue discharging direction of the glue stick.

[0010] As a preferred technical scheme, the left and right sides of the rotary locking piece are rotatably connected to the pushing shaft seat through a pin shaft one, and rotate clockwise and counterclockwise around the pin shaft one as the center.

[0011] As a preferred technical scheme, the top end of the push handle is hinged to the push shaft seat, and the other side of the top end of the push handle is connected with the rotary locking piece, and the push handle can drive the rotary locking piece to rotate to be locked or released when the push handle swings.

[0012] As a preferred technical scheme, the push handle is provided with a push sliding groove, the rotary locking piece is connected with a pin shaft two, the pin shaft two is slidably limited in the push sliding groove, and the push sliding groove drives the rotary locking piece to rotate through the pin shaft two when the push handle swings.

[0013] Or the push handle is connected with a pin shaft two, the rotary locking piece is provided with a push sliding groove, the pin shaft two is slidably limited in the push sliding groove, and the pin shaft two drives the rotary locking piece to rotate through the push sliding groove when the push handle swings.

[0014] As a preferred technical scheme, the inner surface of the glue stick channel is provided with a pressing locking surface matched with the surface of the glue stick.

[0015] As a preferred technical scheme, the push shaft seat is provided with a glue stick auxiliary channel, and the inner surface of the glue stick auxiliary channel is provided with an auxiliary pressing part matched with the surface of the glue stick.

[0016] Another preferred technical scheme, hot melt tool, including shell and the long-stroke glue stick push structure described above, and the tail end of the shell is provided with an elastic element between the push handle.

[0017] As a preferred technical scheme, the head or the middle of the shell is provided with a fixed handle, and the push handle is located behind the fixed handle.

[0018] As a preferred technical scheme, the side of the push handle is provided with a handle guide groove, and the side of the shell is provided with a handle guide strip matched with the handle guide groove.

[0019] Due to the adoption of the above technical scheme, the beneficial effects of the present application are as follows: the push handle is arranged at the tail end of the shell, the length of the head and tail end of the shell is fully utilized, and the long-stroke glue pushing is achieved through the front and rear free parallel movement, the movement stroke is large, and the repeated pressing for glue extrusion is not required, the long-stroke continuous glue pushing can be realized by only keeping the push action of the hand, the hand can be slowly gripped when the push handle and the fixed handle are simultaneously gripped, the stable glue pushing is achieved, and the device has the advantages of simple structure, low cost, simple process, and the like, and the risk of deformation, sliding and rupture of the glue stick is avoided, and the use is excellent. BRIEF DESCRIPTION OF DRAWINGS

[0020] The following drawings are only intended to illustrate and explain the present application, and do not limit the scope of the present application.

[0021] Figure 1 is a structural schematic diagram of the hot melting tool according to an embodiment of the present application;

[0022] Figure 2 is a structural principle diagram of the hot melting tool according to an embodiment of the present application;

[0023] Figure 3 is a structural schematic diagram of the long-stroke glue stick pressing and pushing structure according to an embodiment of the present application;

[0024] Figure 4 is a structural split diagram of the long-stroke glue stick pressing and pushing structure according to an embodiment of the present application;

[0025] Figure 5 is a structural principle diagram of the long-stroke glue stick pressing and pushing structure according to an embodiment of the present application;

[0026] Figure 6 is a state schematic diagram of the glue stick being locked according to an embodiment of the present application;

[0027] Figure 7 is a state schematic diagram of the glue stick being pushed according to an embodiment of the present application;

[0028] Figure 8 is a structural schematic diagram of the rotary locking piece according to an embodiment of the present application;

[0029] Figure 9 is a structural schematic diagram of the rotary locking piece according to an embodiment of the present application;

[0030] Figure 10 is a local structure enlarged schematic diagram according to an embodiment of the present application;

[0031] In the figure, 1 is a shell, 2 is a pushing shaft seat, 3 is a rotary locking piece, 4 is a pressing and pushing handle, 5 is a shaft seat cavity, 6 is a pushing sliding rail, 7 is a pin shaft one, 8 is a glue stick channel, 9 is a pressing and pushing sliding groove, 10 is a pin shaft two, 11 is a pressing and locking surface, 12 is an auxiliary pressing part, 13 is an elastic piece, 14 is a fixed handle, 15 is a handle guide groove, and 16 is a glue stick. DETAILED DESCRIPTION

[0032] The present application will be further described below in conjunction with the drawings and embodiments. In the following detailed description, only certain exemplary embodiments of the present application are described by way of illustration. It goes without saying that those skilled in the art can make modifications to the described embodiments in various ways without departing from the spirit and scope of the present application. Therefore, the drawings and description are essentially illustrative, and are not intended to limit the scope of protection of the claims.

[0033] Reference is made to Figure 1 andFigure 2 This is a schematic diagram of the structure of a hot melt tool, which includes a housing 1 and a long-stroke glue rod pressing structure mounted on the housing 1. Figure 1 and Figure 2 The long-stroke glue stick pressing structure is used in hot melt glue guns, and of course it can also be used in other similar tools such as hot melt glue pens. This embodiment uses the application of the long-stroke glue stick pressing structure in a hot melt glue gun as an example to describe the structure and working principle. Of course, the long-stroke glue stick pressing structure is not limited to the use of hot melt glue guns.

[0034] See Figures 3 to 5 This is a schematic diagram of the long-stroke glue stick pressing and pushing structure. The long-stroke glue stick pressing and pushing structure includes a push shaft seat 2, a rotary locking component 3, and a pressing handle 4. The push shaft seat 2 and the pressing handle 4 work together to achieve long-stroke sliding glue dispensing. The push shaft seat 2, the rotary locking component 3, and the pressing handle 4 work together to lock and unlock the glue stick 16 and allow the glue stick 16 to slide as a whole to achieve long-stroke and stable glue dispensing.

[0035] See Figures 2 to 5 The push shaft seat 2 serves as the mounting base for the rotary locking member 3 and the push handle 4. The push shaft seat 2 is slidably disposed within the housing 1 of the hot melt tool. The housing 1 is provided with a shaft seat cavity 5 to accommodate the push shaft seat 2 to slide back and forth along the glue dispensing direction. The shaft seat cavity 5 is provided with a push slide rail 6. The push slide rail 6 is disposed within the housing along the head-to-tail direction of the housing. The surface of the push shaft seat 2 is provided with a push guide groove or push guide block that slides in cooperation with the push slide rail 6. The push slide rail 6 slides in cooperation with the push guide groove and push guide block, restricting the push shaft seat 2 to slide only back and forth along the glue dispensing direction (i.e., the head and tail ends of the housing).

[0036] See Figures 2 to 5 The rotary locking member 3 is used to lock the glue rod 16. The rotary locking member 3 is located inside the housing 1 and hinged to the push shaft seat 2. The left and right sides of the rotary locking member 3 are rotatably connected to the push shaft seat 2 via pins 7, and rotate clockwise and counterclockwise around pins 7. The rotary locking member 3 has a glue rod channel 8 with an opening larger than the diameter of the glue rod 16 along the glue dispensing direction of the glue rod 16. When the rotary locking member 3 is not swinging (initial position) (see...) Figure 2 The glue rod channel 8 is directly opposite the glue rod hole of the housing 1, and the glue rod 16 can be freely inserted into the glue rod channel 8. When the rotary locking member 3 is tilted and rotated (see...), Figure 6 When the glue rod channel 8 is no longer directly aligned with the glue rod hole of the housing 1, the rotary locking member 3 gradually clamps the surface of the glue rod 16, thereby locking the glue rod 16. When the rotary locking member 3 returns from tilted rotation to a vertical state (see...),Figure 7 The glue stick 16 is released.

[0037] Referring to Figures 2 to 5 The push handle 4 is a trigger for driving the rotary locking member 3 to rotate and lock or release the glue stick 16. The top end of the push handle 4 is located in the shell 1 and can slide forward along the tail end of the shell 1. One side of the top end of the push handle 4 is hinged to the push shaft seat 2, and the other side of the top end of the push handle 4 is connected to the rotary locking member 3. When the push handle 4 is pressed, the push handle 4 swings relative to the push shaft seat 2 and drives the rotary locking member 3 to rotate around the push shaft seat 2, thereby locking or releasing the glue stick 16. When the glue stick 16 is locked, the push handle 4 cannot continue to rotate. At this time, the push handle 4, the rotary locking member 3, the push shaft seat 2, and the glue stick 16 form an integral whole. At this time, if force continues to be applied to the push handle 4, the push handle 4 will drive the rotary locking member 3 and the glue stick 16 to slide as a whole.

[0038] Referring to Figures 3 to 5 The push handle 4 is provided with a push sliding groove 9, and the rotary locking member 3 is connected with a pin shaft 10. The pin shaft 10 is slidingly limited in the push sliding groove 9. When the push handle 4 swings, the push sliding groove 9 drives the rotary locking member 3 to rotate through the pin shaft 10. When the push handle 4 is pressed, the push handle 4 swings relative to the push shaft seat 2, the push sliding groove 9 drives the pin shaft 10, the pin shaft 10 slides and rotates along the push sliding groove 9, and the rotary locking member 3 is driven to rotate.

[0039] The glue stick channel 8 can be a round hole or a square hole, or other slot structures, as long as the glue stick 16 can be sleeved in the rotary locking member 3.

[0040] In order to ensure the locking effect of the rotary locking member 3, a pressing locking surface 11 is arranged on the inner surface of the glue stick channel 8. The pressing locking surface 11 is an arc surface matched with the surface of the glue stick 16. The pressing locking surface 11 is in frictional contact with the surface of the glue stick 16 to achieve the locking purpose of the glue stick 16. The pressing locking surface 11 can be one or two. The specific solutions include: one, the pressing locking surface 11 is one, arranged at the top end of the glue stick channel 8 and close to the tail end of the shell 1; two, the pressing locking surface 11 is one, arranged at the bottom end of the glue stick channel 8 and close to the front end of the shell 1; three, referring to Figure 8 and Figure 9, the compression locking surface 11 is two, one of which is provided at the top end of the glue stick channel 8 and close to the tail end of the shell 1, the other is provided at the bottom end of the glue stick channel 8 and close to the front end of the shell 1. The above three ways can realize the locking effect of the glue stick 16, the compression locking surface 11 is only provided at the top end or the bottom end, which can realize the unilateral locking of the glue stick 16; and when one compression locking surface 11 is provided on the upper and lower surfaces of the glue stick 16, bilateral locking can be achieved, not only the locking effect of the glue stick 16 is better, the glue is more stable, but also the upper and lower cooperation can avoid deformation, damage and fracture of the glue stick 16, so that the user does not have to worry about the damage caused by excessive pressing on the glue stick 16, and the two-point cooperation can stably lock the glue stick 16 of different diameters, which is suitable for glue sticks 16 of different specifications.

[0041] The compression locking surface 11 is a concave circular arc surface, which gradually expands outward from the inner end surface of the rotary locking piece 3, and the compression locking surface 11 can be adapted to the outer peripheral surface of the glue stick.

[0042] In order to further improve the locking effect of the glue stick 16, a glue stick auxiliary channel is provided on the push shaft seat 2, the inner surface of the glue stick auxiliary channel is provided with an auxiliary compression part 12 which is in contact with the surface of the glue stick 16, the auxiliary compression part 12 is an arc surface which is adapted to the surface of the glue stick 16, see Figure 10 The auxiliary compression part 12 serves as a compression point, cooperates with the upper and lower compression locking surfaces 11, and forms a three-point (three arc surfaces) clamping, which will be more helpful to stably clamp the glue stick 16. At the same time, it can naturally adapt to the large size tolerance of the surface of the glue stick 16, when the glue stick 16 is clamped stably, the resistance of the compression and swing of the push handle 4 is greater than the resistance of the forward pushing, which will directly start the glue feeding.

[0043] In order to realize the automatic reset of the long-stroke glue stick compression and pushing structure, a resilient member 13 is provided between the tail end of the shell 1 and the push handle 4, one end of the resilient member 13 is connected to the push handle 4, the other end of the resilient member 13 is connected to the tail end of the shell 1, and the resilient member 13 is arranged obliquely to the rear end to stretch and pull the push handle 4. The setting of the resilient member 13 makes the push handle 4 automatically return to the initial position, realizing the reciprocating glue pushing operation. In this embodiment, the resilient member 13 is a tension spring.

[0044] The head (front) or middle of the shell 1 is provided with a fixed handle 14, the push handle 4 is located behind the fixed handle 14, the fixed handle 14 is arranged on the front or middle of the shell 1, when the fixed handle 14 and the push handle 4 are held at the same time, it is helpful to the stable pushing of the push handle 4, and the long stroke pushing and stable pushing of the glue are achieved. Of course, if the fixed handle 14 is not arranged, the operator can hold the outer surface of the shell 1 with one hand and push the push handle 4 with the other hand to achieve the purpose of pushing the glue, but when the fixed handle 14 is arranged, the operator can hold the two handles with one hand to independently complete the pushing of the glue, at this time, slow and stable holding can be realized, and the operation is more convenient.

[0045] The front end surface of the push handle 4 is provided with a clamping groove corresponding to the rear end surface of the fixed handle 14, when the push handle 4 is pressed to the fixed handle 14, the misaligned concave-convex edges are buckled at this time, and the design purpose is to further lengthen the pressing stroke. At any time of pressing, the elastic member 13 stretched obliquely will pull the push handle 4, and preferentially make it rotate, that is, the glue stick 16 is unlocked, and the effect of normal mechanism reset while the glue stick 16 remains in place is achieved.

[0046] The switch and the handle are installed to the rear end surface of the fixed handle 14, and it is ensured that the misoperation and winding are not caused.

[0047] The side of the push handle 4 is provided with a handle guide groove 15, the side of the shell 1 is provided with a handle guide strip matched with the handle guide groove 15, and an activity gap is reserved between the handle guide groove 15 and the handle guide strip in the up-down direction. The activity gap leaves a certain allowance, and it is ensured that the front and rear movement can be freely realized under different clamping angles.

[0048] The rotary locking member 3 is hinged to the inside of the push shaft seat 2, and the bottom end of the rotary locking member 3 extends out of the push shaft seat 2 and is connected to the push handle 4.

[0049] The working principle of the embodiment is as follows:

[0050] The push handle 4 is pulled by the elastic member 13, when the push handle 4 is held, because the rotary pair has lower damping and the mass of the push handle 4 is lighter, the rotation state of the push handle 4 is preferentially triggered (it will be preferentially triggered at any time); because the push-pushing sliding groove 9 of the push handle 4 and the pin shaft two 10 of the rotary locking member 3 form a moving pair linkage, and the rotary locking member 3 is assembled in the push shaft seat 2 through the action of two pin shafts one 7, therefore the rotary locking member 3 is rotated;

[0051] Before the glue operation, when the rotary locking piece 3 does not swing, the glue stick channel 8 is opposite to the glue stick hole of the shell 1, and the glue stick 16 can be put through the glue stick channel 8 from the tail end of the shell 1 to complete the placement of the glue stick 16. Referring to Figure 2 ;

[0052] When the glue is out, the operator holds the push handle 4 and the fixed handle 14 at the same time, the push handle 4 first rotates a small angle against the pulling force of the elastic piece 13, and drives the rotary locking piece 3 to rotate around the push shaft seat 2, after the rotary locking piece 3 is tilted and rotated, the glue stick channel 8 is no longer opposite to the glue stick hole of the shell 1, at this time, the rotary locking piece 3 gradually clamps the surface of the glue stick 16, and the state of the glue stick 16 after being locked is shown in Figure 6 ; When the glue stick 16 is completely locked, the push handle 4 cannot continue to rotate, at this time, the push handle 4, the rotary locking piece 3 and the glue stick 16 form an integral whole, at this time, if the force continues to be applied to the push handle 4, the push handle 4 will drive the rotary locking piece 3, the push shaft seat 2 and the glue stick 16 to slowly slide forward, so as to realize stable glue out of the glue stick 16, and the state after the glue out of the glue stick 16 is shown in Figure 7 ; When the glue out of the glue stick 16 is completed, the push handle 4 is released, under the action of the elastic piece 13, the push handle 4 first rotates to drive the rotary locking piece 3 to restore from the tilt to the vertical state, and then releases the glue stick 16, and then under the action of the elastic piece 13, the push handle 4, the rotary locking piece 3 and the push shaft seat 2 slide backward as a whole until stop, waiting for the next operation.

[0053] The embodiment has multiple linkage mechanism pairs in the glue gun, when holding the handle, the push handle 4 will first rotate a small angle to clamp and lock the glue stick 16 inside, no matter the diameter of the glue stick 16 is large or small, it can be adaptively locked, and after being locked, it can move as a whole forward and backward. When releasing the hand, the locking is released first and naturally resets. When placing a new glue stick 16, the locking is also in the unlocked state. The whole process is all in the automatic triggering state, and the user does not need to take any other action.

[0054] The device sets the push handle 4 at the tail end of the shell 1, fully utilizes the length of the shell 1, and realizes the purpose of long-stroke glue pushing through the forward and backward free parallel movement, and allows the palm to slowly hold tightly when holding the push handle 4 and the fixed handle 14 at the same time, so as to realize the purpose of stable glue pushing. The device also has the advantages of simple structure, low cost, simple process and the like. The long-distance stable glue pushing effect can be realized at the same time, and the risk of deformation, sliding and breaking of the glue stick 16 is avoided, and the use feeling is excellent.

[0055] Example two:

[0056] The embodiment is basically same as the structure of the first embodiment, and the difference is mainly that the position of the pushing sliding groove 9 is different. In the embodiment, the pushing handle 4 is connected with a pin shaft 10, the rotating locking member 3 is provided with a pushing sliding groove 9, the pin shaft 2 slides and is limited in the pushing sliding groove 9, and when the pushing handle 4 swings, the pin shaft 2 pushes the rotating locking member 3 to rotate through the pushing sliding groove 9. The working principle is basically same as the first embodiment, and will not be repeated here. Of course, the design of arranging the pushing sliding groove 9 on the pushing handle 4 is the optimal solution of the maximum rotating angle of the rotating member.

[0057] The basic principle, main features and advantages of the utility model are shown and described above. The skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and the description in the specification are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model can have various changes and improvements, and these changes and improvements all fall within the scope of the utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A long stroke glue stick push structure for hot melt tools, characterized in that, include: A push-shaft seat, located inside the housing of the hot melt tool, is used for mounting glue sticks; A sliding rail is provided inside the housing along the head-to-tail direction, and the sliding shaft seat is slidably mounted on the sliding rail; A push handle, one end of which is located inside the housing, can slide along the tail end of the housing towards the head end, driving the push shaft seat to slide along the push slide rail for a long stroke.

2. The long-stroke glue stick push structure according to claim 1, wherein: The push shaft seat is hinged with a rotary locking member for locking the glue rod. The rotary locking member has a glue rod channel with an opening larger than the diameter of the glue rod along the glue dispensing direction of the glue rod.

3. The long-stroke glue stick push structure according to claim 2, wherein: The left and right sides of the rotary locking component are rotatably connected to the push shaft seat by a pin, and rotate clockwise and counterclockwise around the pin.

4. The long-stroke rubber stick push-pull structure according to claim 2, characterized in that: One side of the top of the push handle is hinged to the push shaft seat, and the other side of the top of the push handle is connected to the rotary locking member. When the push handle swings, it can drive the rotary locking member to rotate for locking and releasing.

5. The long-stroke glue stick push structure according to claim 4, wherein: The push handle is provided with a push groove, and the rotary locking member is connected with a second pin. The second pin slides within the push groove. When the push handle swings, the push groove pushes the rotary locking member to rotate through the second pin. Alternatively, a second pin may be connected to the push handle, and a push groove may be provided on the rotary locking member. The second pin may slide within the push groove, and when the push handle swings, the second pin may push the rotary locking member to rotate through the push groove.

6. The long-stroke glue stick push structure according to claim 2, wherein: The inner surface of the glue rod channel is provided with a pressing and locking surface that is adapted to the surface of the glue rod.

7. The long-stroke glue stick push structure according to claim 1, wherein: The push shaft seat is provided with a glue rod auxiliary channel, and the inner surface of the glue rod auxiliary channel is provided with an auxiliary pressing part that fits against the surface of the glue rod.

8. Hot melt tool, characterized in that: It includes a housing and a long-stroke rubber rod pressing structure as described in any one of claims 1 to 7, wherein an elastic element is provided between the tail end of the housing and the pressing handle.

9. The hot melt tool of claim 8, wherein: The housing has a fixed handle at the head or middle, and the push handle is located behind the fixed handle.

10. The hot melt tool of claim 8, wherein: The side of the push handle is provided with a handle guide groove, and the side of the housing is provided with a handle guide strip that cooperates with the handle guide groove.

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