Labor-saving hot melt glue gun

Abstract

The utility model belongs to the technical field of hot melt glue guns, and particularly relates to a labor-saving hot melt glue gun. The glue gun comprises a gun shell, and a feeding channel allowing a glue stick to pass through is formed in the gun shell; the force storage propelling mechanism comprises a force storage part and a restraining part, one end of the force storage part is provided with the restraining part used for clamping or abutting against the glue stick, the other end of the force storage part is fixed to the gun shell, and the force storage propelling mechanism is used for pushing the glue stick to move forwards along the feeding channel; the retainer is movably connected into the gun shell, and the first end of the retainer limits forward movement of the glue stick when making contact with the glue stick. The hot melt glue gun propelling device is used for solving the problem that a hot melt glue gun propelling device is strenuous. Through the cooperation of the force storage part and the restraining part, the restraining part clamps and fixes the glue stick, the glue stick is pushed by the force of the force storage part to move forwards in the feeding channel, when the stopping part makes contact with the glue stick, the effect of limiting the glue stick from moving forwards is achieved, when the stopping part is separated from the glue stick, the force storage part can continuously push the glue stick to move forwards, and the glue stick does not need to be pushed to move forwards by manually and repeatedly pulling a trigger. Time and labor are saved, and operation is easy.

Description

TECHNICAL FIELD

[0001] The utility model belongs to hot melt glue gun technical field, concretely relates to a labor-saving hot melt glue gun. BACKGROUND

[0002] The hot melt glue gun heats the hot melt glue stick to a molten state through a heating device, then extrudes the molten hot melt glue from the nozzle with the help of a trigger or a pushing device, and applies it to the surface of the object to be bonded. After the glue cools and solidifies, the object can be bonded.

[0003] Currently, the trigger or the pushing device of the hot melt glue gun is mainly used to control the extrusion of the hot melt glue. When the trigger is pulled, the internal mechanical structure will be activated to extrude the molten hot melt glue from the nozzle. Some hot melt glue guns use a pushing device to extrude the glue by manually pushing the push rod. For example, the Chinese patent with publication number CN213914647U uses the hand to push the glue stick at the trigger. Each time the trigger is pressed, a lot of force is needed to push the glue stick, which affects the focus on applying the glue and causes hand fatigue after a long time. SUMMARY

[0004] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a labor-saving hot melt glue gun to solve the problem of labor-intensive pushing device.

[0005] The technical solution of the utility model to solve the above technical problem is as follows: a labor-saving hot melt glue gun, comprising:

[0006] A gun shell having a feeding channel for the glue stick to pass through;

[0007] A force-accumulating pushing mechanism comprising a force-accumulating member and a restraining member, the restraining member being installed at one end of the force-accumulating member for clamping or abutting the glue stick, the other end of the force-accumulating member being fixed to the gun shell, and the force-accumulating pushing mechanism being used to push the glue stick forward along the feeding channel;

[0008] A stopper movably connected in the gun shell, the first end of the stopper limiting the forward movement of the glue stick when it contacts the glue stick.

[0009] Compared with the prior art, the above technical solution has the following beneficial effects:

[0010] Through the cooperation of the force-accumulating member and the restraining member, the restraining member clamps and fixes the glue stick, and the force-accumulating member pushes the glue stick forward in the feeding channel. When the first end of the stopper contacts the glue stick, it limits the forward movement of the glue stick. When the first end of the stopper is separated from the glue stick due to the rotation of the stopper under stress, the force-accumulating member can continuously push the glue stick forward. The force-accumulating member replaces the manual pushing of the glue stick, eliminating the need for repeated pulling of the trigger to push the glue stick forward, saving time and effort, and the operation is simple.

[0011] On the basis of the above technical solutions, the embodiments of the present application can also be improved as follows:

[0012] In an embodiment, the first end of the stopper is in interference fit with the glue stick when in contact.

[0013] In an embodiment, the first end of the stopper is provided with a friction part for contacting the glue stick.

[0014] In an embodiment, an elastic member is further included, one end of the elastic member being connected with the stopper and the other end being connected with the gun shell, for driving the first end of the stopper to approach the glue stick.

[0015] In an embodiment, the restraining member includes a limiting sleeve sleeved on the outer periphery of the glue stick and at least one pair of limiting tabs provided on the inner wall of the limiting sleeve, the limiting sleeve being connected with the one end of the force storage member away from the gun shell, and the limiting tabs being clamped on the outer periphery or end of the glue stick.

[0016] In an embodiment, the limiting tabs are oppositely arranged along the circumference of the limiting sleeve, the radial length of the limiting tabs being greater than the inner radius of the limiting sleeve, and the side of the limiting tabs away from the limiting sleeve being inclined toward the direction close to the gun shell.

[0017] In an embodiment, the restraining member includes a gear rotatably connected in the gun shell, the working surface of the gear contacting the glue stick, one end of the force storage member being connected with the gear and the other end being fixed in the gun shell after being wound.

[0018] In an embodiment, the gear is a ratchet gear, the tooth surface of the ratchet gear being inclined toward the advancing direction of the glue stick.

[0019] In an embodiment, a knob coaxially connected with the gear is arranged on the gun shell.

[0020] In an embodiment, a buckle for limiting the second end of the stopper is arranged on the gun shell, the buckle being used for limiting the first end of the stopper to approach the glue stick.

[0021] The one or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0022] 1. The force storage and advancing mechanism can generate a continuous advancing force to push the glue stick to move forward, thereby replacing the original manual repeated pressing force of the trigger and saving more labor;

[0023] 2. The trigger is only used as a switch for releasing the force storage and advancing mechanism, after the trigger is pressed, the force of the force storage and advancing mechanism is continuously released, without the need to repeatedly press the trigger, saving more labor;

[0024] 3, the buckle ring can be buckled to the trigger to make the trigger in a continuous pressing state, that is, the state of continuously releasing the force in the force storage and pushing mechanism, at this time the operator only needs to hold the gun shell, which is more convenient and labor-saving. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0026] Figure 1 It is a schematic diagram of the overall structure of embodiment 1 in the present application.

[0027] Figure 2 It is a schematic diagram of the cross-sectional structure when the stop member is rotationally connected in the present application.

[0028] Figure 3 It is a schematic diagram of the cross-sectional structure when the stop member is slidingly connected in the present application.

[0029] Figure 4 It is a schematic diagram of the overall structure of embodiment 2 in the present application.

[0030] Figure 5 It is a schematic diagram of the cross-sectional structure of Figure 4 .

[0031] Reference signs:

[0032] 1, gun shell; 2, feeding channel; 3, force storage and pushing mechanism; 4, stop member; 5, friction part; 6, elastic member;

[0033] 301, force storage member; 302, constraint member;

[0034] 7, limiting sleeve; 8, limiting tab; 9, limiting block;

[0035] 10, gear; 11, knob;

[0036] 12, rubber stick; 13, slide. DETAILED DESCRIPTION

[0037] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0038] It should be noted that the technical terms or scientific terms used in the present application should be understood as the general meaning understood by the skilled person in the field to which the present application belongs, unless otherwise specified.

[0039] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0040] In addition, the terms "first", "second", and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0041] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] As Figures 1-2 shown, the labor-saving hot melt glue gun provided by the present application comprises a gun shell 1, a force storage and advancing mechanism 3 and a stopper 4.

[0043] A feeding channel 2 for the glue stick 12 is formed in the gun shell 1, and the feeding channel 2 penetrates from the tail of the gun shell 1 to the gun nozzle outlet of the gun head. Specifically, the force storage and advancing mechanism 3 comprises a force storage member 301 and a constraint member 302. The force storage member 301 mainly provides elastic potential energy for feeding the glue stick 12 forward, and can be realized by a spring or the like. One end of the force storage member 301 is provided with the constraint member 302 for clamping or abutting the glue stick 12. The other end of the force storage member 301 is fixed to the gun shell 1. The force storage and advancing mechanism 3 is used to push the glue stick 12 to move forward along the feeding channel 2, and the glue stick 12 is pushed forward by the cooperation of the force storage member 301 and the constraint member 302.

[0044] The stopper 4 is movably connected in the gun shell 1, the first end of the stopper 4 limits the forward movement of the rubber stick 12 when contacting the rubber stick 12, and the stopper 4 functions to limit the release of the elastic potential energy of the force storage and pushing mechanism 3, and the trigger can be used specifically, the middle part of the trigger is rotationally connected in the gun shell 1, when rotating, the first end of the trigger is close to or away from the rubber stick 12, or the trigger is slidingly connected in the wedge-shaped sliding in the gun shell, during the sliding process, the first end of the trigger is close to or away from the rubber stick 12 by the wedge-shaped sliding.

[0045] The embodiment restrains the rubber stick by the cooperation of the force storage member 301 and the restraint member 302, the restraint member 302 clamps or abuts against the rubber stick, and the rubber stick 12 is pushed forward in the feeding channel 2 by the force of the force storage member 301 which stores the force in advance, when the first end of the stopper 4 contacts the rubber stick 12, the function of limiting the forward movement of the rubber stick 12 is realized, when the first end of the stopper 4 is separated from the rubber stick 12 by the rotation under the force, the force storage member 301 can continuously push the rubber stick 12 forward, and the pressing of the trigger is only as a trigger switch, the force storage member 301 replaces the manual pushing force of the rubber stick, so that the operator only needs to exert a small force at the trigger to smoothly push the rubber stick 12 forward, the labor-saving purpose is realized, the rubber stick 12 does not need to be repeatedly pushed forward by manually pulling the trigger, time and labor are saved, and the operation is simple.

[0046] The first end of the stopper 4 is in interference fit with the rubber stick 12 when contacting, that is, the first end of the stopper 4 invades into the feeding channel 2 after being rotated to the position, the interference fit can abut against the surface of the rubber stick 12 when the first end of the stopper 4 contacts the rubber stick 12, and then the rubber stick is limited in the feeding channel 2, and the force storage and pushing mechanism 3 is prevented from sending the rubber stick 12 forward, when the first end of the stopper 4 is separated from the rubber stick 12, the force storage and pushing mechanism 3 can normally push the rubber stick 12 forward.

[0047] In order to improve the braking effect of the first end of the stopper 4, the first end of the stopper 4 is provided with a friction part 5 for contacting the rubber stick 12, the friction part 5 is designed to improve the friction force, the friction part 5 can be realized by arraying a plurality of sharp microstructures, so that the first end of the stopper 4 just matches the surface of the rubber stick 12, and the forward movement of the rubber stick 12 is prevented by the high friction force of the friction part 5, or the friction part 5 can be provided on the basis of the interference fit of the first end of the stopper 4, and the friction force is further improved.

[0048] As Figure 2As shown, when the stop 4 is rotated, its specific usage is as follows: When the operator does not apply force to the second end of the stop 4 at the bottom, the glue gun is not used. The friction part 5 on the first end of the top of the stop 4 is in close contact with the glue rod 12, and a large frictional force is generated between the friction part 5 and the glue rod 12, preventing the glue rod 12 from advancing. When the operator applies a small force to the second end of the trigger, the trigger rotates, controlling the friction part 5 to move downward. The friction part 5 moves away from the glue rod 12, and the frictional force between the friction part 5 and the glue rod 12 disappears or is greatly reduced. The glue rod 12 is then advanced normally by the force stored in advance by the accumulator 301, and the glue gun works normally.

[0049] like Figure 3 As shown, when the stop 4 is in sliding connection, it works as follows: the stop 4 is a slider stop, which is slidably connected in a slide rail that forms an angle with the feeding channel 2. The top of the slider stop is the first end, which is used to contact the glue rod 12. The bottom is inclined at an angle parallel to the sliding surface. At this time, the front end of the stop 4 is the second end, which extends out of the gun shell to facilitate the operator to pull the trigger. When the stop 4 moves forward, it approaches the glue rod 12 through the slide rail that forms an angle with the feeding channel 2 and abuts against it to achieve a stop. When the operator pulls the trigger to move the stop 4 backward, the first end of the top of the stop 4 moves away from and does not contact the glue rod 12. At this time, the friction between the friction part 5 of the first end of the top of the stop 4 and the glue rod 12 disappears or is greatly reduced. The glue rod 12 is normally pushed forward by the force stored in advance by the power storage member 301, and the glue gun works normally.

[0050] To ensure the retraction of the stop 4, an elastic element 6 is also provided in the gun housing 1. The elastic element 6 can be implemented by a spring. One end of the elastic element 6 is connected to the stop 4, and the other end is connected to the gun housing 1. It is used to drive the first end of the stop 4 to approach the rubber rod 12. After the operator presses down the second end of the stop 4 and releases it, the elastic element 6 can pull the first end of the stop 4 to approach the rubber rod 12 to prevent the rubber rod 12 from moving.

[0051] In order to make it easier for the operator to pull the stop 4 while the power-saving propulsion mechanism 3 continues to push the glue stick 12 forward, a buckle is provided on the gun shell 1 to limit the second end of the stop 4. The buckle is used to limit the first end of the stop 4 from approaching the glue stick 12. The buckle can be fastened to the second end of the stop 4 to lock the stop 4 and realize automatic glue dispensing.

[0052] Example 1

[0053] Based on the above, in this embodiment, the constraint member 302 can be implemented in the following manner;

[0054] like Figure 1 , 2As shown, the constraint member 302 includes a limiting sleeve 7 sleeved on the outer periphery of the glue rod 12 and at least one pair of limiting paddles 8 disposed on the inner wall of the limiting sleeve 7. The inner diameter of the limiting sleeve 7 is larger than the outer diameter of the glue rod 12, ensuring that the glue rod 12 can pass smoothly through the limiting sleeve 7. The limiting sleeve 7 is connected to the end of the power storage member 301 away from the gun shell 1. The end of the power storage member 301 away from the limiting sleeve 7 is fixed on the gun shell 1 near the entrance of the feeding channel 2. After passing through the limiting sleeve 7, the glue rod 12 passes through the power storage member 301 and enters the feeding channel 2. The power storage member 301 can be implemented by means of a tension spring, etc., to facilitate the glue rod 12 to pass through. The limiting paddles 8 are located on the outer periphery or end of the glue rod 12, and play the role of clamping or abutting and fixing the glue rod 12. The limiting paddles 8 are arranged in pairs, and a pair of limiting paddles 8 can more conveniently clamp and fix the glue rod 12.

[0055] Specifically, the limiting paddle 8 is arranged circumferentially opposite to the limiting sleeve 7. The radial length of the limiting paddle 8 is greater than the inner radius of the limiting sleeve 7, and the side of the limiting paddle 8 away from the limiting sleeve 7 is inclined towards the gun shell 1. When the glue rod 12 is inserted from the right end of the limiting sleeve 7, the limiting paddle 8 will undergo elastic deformation. The limiting paddle 8 will not block the entry of the glue rod 12. When the glue rod 12 is fully or partially inserted, the limiting paddle 8 can clamp and fix it on the outer periphery or end of the glue rod 12. Since the length of the limiting paddle 8 is greater than the inner radius of the limiting sleeve 7, when the limiting paddle 8 is located at the end of the glue rod 12, it can also block and restrict the glue rod 12, preventing the glue rod 12 from sliding out from the right end.

[0056] When the outer ring of the limiting paddle 8 is connected to the inner wall of the limiting sleeve 7, the limiting block 9 can be used to limit and fix it, or the outer ring of the limiting paddle 8 can be directly fixed on the inner wall of the limiting sleeve 7, the limiting block 9 can be fixedly set on the inner wall of the limiting sleeve 7, the outer end of the limiting paddle 8 can abut against the limiting block 9, and the opposite inner end of the limiting paddle 8 can abut against the rubber rod.

[0057] like Figure 2 As shown, the spring and the limiting sleeve 7 at the rear end of the gun casing 1 can be fixedly connected. The spring is in a relaxed state at its original state. When the operator inserts the glue rod 12 into the glue rod 12 inlet at the right end of the limiting sleeve 7, the limiting tab 8 acts as a one-way valve and will not affect the insertion of the glue rod 12. It can only make the glue rod 12 move from right to left.

[0058] To facilitate the insertion of the glue rod 12, the operator can lightly pull the trigger, causing the top first end of the stop 4 to move downwards; after the glue rod 12 is inserted, the trigger should be released. Then, the operator can manually pull the limiting sleeve 7 to the right, lengthening the spring, so that the limiting paddle 8 is stably pressed against the bottom end of the glue rod 12 under the action of the limiting block 9 and the spring force, and the spring is successfully charged.

[0059] Embodiment 2

[0060] On the basis of the above, in this embodiment, the constraint member 302 can be implemented in the following way:

[0061] As shown in Figure 4 , 5 , the constraint member 302 comprises a gear 10 rotatably connected in the gun shell 1, the gear 10 is arranged close to the feeding channel 2, so that the working surface of the gear 10 contacts the rubber stick 12, one end of the force storage member 301 is connected with the gear 10, and the other end is fixed in the gun shell 1 after being wound, the elastic potential energy generated by winding drives the gear 10 to rotate, thereby achieving the effect of pushing the rubber stick 12 to move forward, in this embodiment, the force storage member 301 can be implemented by a clockwork, the clockwork releases the elastic potential energy to drive the gear 10 to rotate during the gradual release process of winding.

[0062] In order to improve the friction force between the gear 10 and the rubber stick 12, the gear 10 is arranged as a ratchet gear 10, the tooth surface of the ratchet gear 10 is inclined towards the forward movement direction of the rubber stick 12, and the rubber stick 12 is more easily pushed to move forward when the ratchet gear 10 rotates counterclockwise.

[0063] In order to ensure that the gear 10 can be conveniently and quickly reused after the elastic potential energy is released, the gun shell 1 is provided with a knob 11 coaxially connected with the gear 10, the knob 11 is located outside the gun shell 1, and the gear 10 is driven to rotate by rotating the knob 11, thereby tightening the clockwork.

[0064] As shown in Figure 5 , in specific operation, the operator can lightly knock the second end of the stopper 4 to make the friction part 5 move downward and insert into the rubber stick 12, then release the trigger, rotate the knob 11, and store the force of the clockwork gear 10. The way of storing the force of the clockwork is a mature technology, and will not be described here. After that, when the operator does not apply force at the trigger, that is, the glue gun is not used at this time, the friction part 5 tightly abuts against the rubber stick 12, and a large friction force is generated between the friction part 5 and the rubber stick 12, which prevents the rubber stick 12 from advancing.

[0065] When the operator slightly applies a small force at the trigger, the trigger is rotated to control the friction part 5 to move downward, and the friction part 5 moves away from the rubber stick 12, at this time, the friction force between the friction part 5 and the rubber stick 12 disappears or greatly decreases, the rubber stick 12 is normally pushed forward by the force stored in advance by the clockwork gear 10, and the glue gun normally works.

[0066] Finally, it should be noted that: the above embodiments are used to illustrate the technical solutions of the present application, but not limited to them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A labor saving hot melt glue gun characterized by, The application relates to a glue stick gun, comprising: a gun shell, in which a feeding channel for a glue stick is formed; a force storage and pushing mechanism, which comprises a force storage member and a constraint member, one end of the force storage member is provided with the constraint member for clamping or abutting against the glue stick, the other end of the force storage member is fixed to the gun shell, and the force storage and pushing mechanism is used to push the glue stick to move forward along the feeding channel; a stop member, which is movably connected to the gun shell, and a first end of the stop member limits the forward movement of the glue stick when the first end contacts the glue stick.

2. The power-efficient hot melt glue gun of claim 1, wherein, The first end of the stop member is in interference fit with the glue stick when the first end contacts the glue stick.

3. The power-assisted hot melt glue gun of claim 2, wherein, The first end of the stop member is provided with a friction part for contacting the glue stick.

4. The power-saving hot melt glue gun according to claim 1 or 2, characterized in that, The application further comprises an elastic member, one end of the elastic member is connected to the stop member, and the other end of the elastic member is connected to the gun shell, and the elastic member is used to drive the first end of the stop member to approach the glue stick.

5. The power-assisted hot melt glue gun of claim 1, wherein, The constraint member comprises a limiting sleeve and at least one pair of limiting tabs, the limiting sleeve is sleeved on the outer periphery of the glue stick, the limiting tabs are arranged on the inner wall of the limiting sleeve, the limiting sleeve is connected to the end of the force storage member away from the gun shell, and the limiting tabs are clamped on the outer periphery or the end of the glue stick.

6. The power-assisted hot melt glue gun of claim 5, wherein, The limiting tabs are oppositely arranged along the circumference of the limiting sleeve, the radial length of the limiting tabs is greater than the inner radius of the limiting sleeve, and the side of the limiting tabs away from the limiting sleeve is inclined towards the direction close to the gun shell.

7. The power-efficient hot melt glue gun of claim 1, wherein, The constraint member comprises a gear rotatably connected to the gun shell, the working surface of the gear contacts the glue stick, one end of the force storage member is connected to the gear, and the other end of the force storage member is fixed to the gun shell after being wound.

8. The power-assisted hot melt glue gun of claim 7, wherein, The gear is a ratchet gear, and the tooth surface of the ratchet gear is inclined towards the forward movement direction of the glue stick.

9. The power-assisted hot melt glue gun of claim 7, wherein, A knob coaxially connected to the gear is arranged on the gun shell.

10. The power-assisted hot melt glue gun of claim 4, wherein, A buckle for limiting the second end of the stop member is arranged on the gun shell, and the buckle is used to limit the first end of the stop member to approach the glue stick.

Images