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

Abstract

A long-stroke glue stick pressing and pushing structure and a hot-melting tool. The long-stroke glue stick pressing and pushing structure comprises a pushing shaft seat (2), a pushing slide rail (6) and a pressing and pushing handle (4), wherein the pushing shaft seat (2) is arranged in a housing (1) of a hot-melting tool and is configured to have a glue stick (16) mounted thereon; the pushing slide rail (6) is arranged in the housing (1) in a head-to-tail direction of the housing (1), and the pushing shaft seat (2) is slidably mounted on the pushing slide rail (6); and the pressing and pushing handle (4) has one end located in the housing (1), and can slide from the tail end to the head end of the housing (1) so as to drive the pushing shaft seat (2) to slide along the pushing slide rail (6) with a long stroke. The present device achieves the aims of long-stroke and stable glue pushing by means of free parallel movement in a longitudinal direction, has the advantages of a simple structure, low cost, a simple process, etc., and avoids the risks of deformation, slipping and breakage of the glue stick, thus bringing a good user experience.

Description

Long-stroke glue rod pressing structure and hot melt tool

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202423263841X, filed on December 30, 2024, entitled “Long Stroke Glue Rod Pressing Structure and Hot Melting Tool”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to a long-stroke glue rod pressing structure and a hot melt tool incorporating such a pressing structure. Background Technology

[0004] Hot melt glue guns, hot melt glue pens, and other hot melt tools use a heating structure to heat the glue stick, causing the solid glue stick to melt and thus bond objects together. During installation, the glue stick is attached to the tail end of the hot melt tool's housing. During use, the glue stick is held by a pushing structure and continuously pushed towards the head end of the housing to dispense glue.

[0005] As a commonly used hot melt glue gun, the traditional hot melt glue gun's propulsion mechanism is triggered by pressing the trigger to clamp and push the glue. It uses a segmented transmission method for glue delivery. This method results in a limited push stroke, requiring repeated pressing and intermittent pushing of the glue stick to maintain continuous glue delivery. This not only increases hand fatigue, but also causes the gun body to shake during repeated pressing, increasing the instability of the glue application point and reducing the glue application effect.

[0006] Utility Model Content

[0007] The technical problem to be solved by this disclosure is to provide a long-stroke glue stick pressing structure with simplified structure, convenient operation, long glue pushing stroke and stable glue pushing, and a hot melt tool including such pressing structure.

[0008] To solve the above-mentioned technical problems, the technical solution disclosed herein is: a long-stroke glue rod pressing structure, configured on a hot melt tool, comprising:

[0009] A push-shaft seat is located inside the housing of the hot melt tool and is configured for mounting glue sticks;

[0010] 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;

[0011] 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.

[0012] As an optional technical solution, a rotary locking member configured to lock the glue rod is hinged on the push shaft seat. 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.

[0013] As an optional technical solution, the left and right sides of the rotary locking member are rotatably connected to the push shaft seat by a pin, and rotate clockwise and counterclockwise around the pin.

[0014] As an optional technical solution, 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.

[0015] As an optional technical solution, 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, and when the push handle swings, the push groove pushes the rotary locking member to rotate through the second pin.

[0016] 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.

[0017] As an optional technical solution, 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.

[0018] As an optional technical solution, 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.

[0019] Another preferred technical solution is a hot melt tool, which includes a housing and the aforementioned long-stroke glue rod pressing structure; an elastic element is provided between the tail end of the housing and the pressing handle.

[0020] As an optional technical solution, the housing is provided with a fixed handle at the head or middle, and the push handle is located behind the fixed handle.

[0021] As an optional technical solution, 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.

[0022] Due to the adoption of the above technical solution, the beneficial effects of this disclosure are as follows: This device places the pressure handle at the tail end of the housing, making full use of the length of the front and rear ends of the housing, and achieves the purpose of long-stroke glue pushing by moving freely back and forth in parallel. Not only is the stroke large, but there is also no need to repeatedly press to dispense glue. The hand only needs to maintain the pressing and pushing action to achieve long-stroke continuous glue pushing. Furthermore, the hand can hold both the pressure handle and the fixed handle at the same time, allowing for slow tightening to achieve the purpose of stable glue pushing. In addition, this device also has the advantages of simple structure, low cost, and simple process, and avoids the risk of glue stick deformation, slippage and breakage, and provides a good user experience. Attached Figure Description

[0023] The accompanying drawings are intended only to illustrate and explain this disclosure and do not limit the scope of this disclosure.

[0024] Figure 1 is a schematic diagram of the structure of the hot melt tool according to an embodiment of the present disclosure;

[0025] Figure 2 is a schematic diagram of the structure of the hot melt tool according to an embodiment of the present disclosure;

[0026] Figure 3 is a schematic diagram of the long-stroke rubber rod pressing structure according to an embodiment of the present disclosure;

[0027] Figure 4 is a structural exploded view of the long-stroke rubber rod pressing structure according to an embodiment of the present disclosure;

[0028] Figure 5 is a schematic diagram of the long-stroke rubber rod pressing structure according to an embodiment of the present disclosure;

[0029] Figure 6 is a schematic diagram of the state after the glue stick is locked according to an embodiment of the present disclosure;

[0030] Figure 7 is a schematic diagram of the state in which the glue stick has been pushed to its full extent according to an embodiment of this disclosure;

[0031] Figure 8 is a structural schematic diagram of the rotary locking component according to an embodiment of the present disclosure;

[0032] Figure 9 is a structural schematic diagram of the rotary locking component from another angle according to an embodiment of the present disclosure;

[0033] Figure 10 is an enlarged schematic diagram of a partial structure of an embodiment of this disclosure;

[0034] In the diagram: 1-Housing; 2-Push-axis seat; 3-Rotation locking element; 4-Push-axis handle; 5-Ship seat cavity; 6-Push-axis slide rail; 7-Pin one; 8-Glue rod channel; 9-Push-axis slide groove; 10-Pin two; 11-Pressure locking surface; 12-Auxiliary pressure part; 13-Elastic element; 14-Fixed handle; 15-Handle guide groove; 16-Glue rod. Detailed Implementation

[0035] The present disclosure is further illustrated below with reference to the accompanying drawings and embodiments. In the following detailed description, only certain exemplary embodiments of the present disclosure are described by way of illustration. Undoubtedly, those skilled in the art will recognize that various modifications can be made to the described embodiments without departing from the spirit and scope of the present disclosure. Therefore, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

[0036] Referring to Figures 1 and 2, which are schematic diagrams of a hot melt tool, the tool includes a housing 1 and a long-stroke glue stick pressing structure mounted on the housing 1. The long-stroke glue stick pressing structure in Figures 1 and 2 is configured in a hot melt glue gun, but it can also be configured in other similar tools such as a hot melt glue pen. This embodiment uses the application of the long-stroke glue stick pressing structure in a hot melt glue gun as an example to describe its structure and working principle. However, the long-stroke glue stick pressing structure is not limited to use in hot melt glue guns.

[0037] Referring to Figures 3 to 5, which are schematic diagrams of the long-stroke glue stick pressing structure, the long-stroke glue stick pressing 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.

[0038] Referring to Figures 2 to 5, the push shaft seat 2 serves as the mounting base for the rotary locking component 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 has a shaft seat cavity 5, which can be configured to accommodate the push shaft seat 2. The push shaft seat 2 can reciprocate within the shaft seat cavity along the glue dispensing direction. The shaft seat cavity 5 is provided with a push slide rail 6, which is disposed within the housing along the head-to-tail direction, and the direction of the push slide rail 6 is consistent with the glue dispensing direction. 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 or push guide block. The push shaft seat 2 slides in cooperation with the push slide rail 6 through the push guide groove or push guide block. The push slide rail 6 can restrict 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).

[0039] Referring to Figures 2 to 5, the rotary locking member 3 is configured 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 can rotate clockwise or counterclockwise around pins 7. The rotary locking member 3 has a glue rod channel 8 along the glue dispensing direction of the glue rod 16, and the diameter of the glue rod channel 8 is larger than the diameter 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), the glue rod channel 8 is no longer directly opposite the glue rod hole of the housing 1. At this time, 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 the vertical state (see Figure 7), the glue rod 16 is released.

[0040] In this embodiment, the left and right sides of the rotary locking member 3 refer to the two sides of the rotary locking member 3 in the direction perpendicular to the dispensing direction. The push shaft seat 2 is provided with a rotating mounting hole, the direction of which is perpendicular to the dispensing direction. The pin 7 is disposed in the rotating mounting hole, thereby connecting the rotary locking member 3 to the push shaft seat 2. The rotary locking member 3 can rotate clockwise or counterclockwise around the axis of the pin 7.

[0041] Referring to Figures 2 to 5, the push handle 4 serves as a trigger for driving the rotary locking member 3 to rotate and lock the glue rod 16, release the glue rod 16, and move the glue rod 16 forward to push the glue. The top of the push handle 4 is located inside the housing 1, and the top of the push handle 4 can slide forward along the tail end of the housing 1, that is, away from the tail end of the housing 1. One side of the top of the push handle 4 is hinged to the push shaft seat 2, and the other side of the top 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 at the same time drives the rotary locking member 3 to rotate around the push shaft seat 2, thereby locking or releasing the glue rod 16. When the glue rod 16 is locked, the push handle 4 can no longer rotate. At this time, the push handle 4, the rotary locking member 3, the push shaft seat 2, and the glue rod 16 form a whole. If force is applied to the push handle 4, the push handle 4 will drive the rotary locking member 3 and the glue rod 16 to slide as a whole.

[0042] Referring to Figures 3 to 5, the push handle 4 is provided with a push groove 9, and the rotary locking member 3 is connected with a second pin 10. The second pin 10 is located below the first pin 7, and the sliding limit of the second pin 10 is located in the push groove 9. When the push handle 4 swings, the push groove 9 pushes the rotary locking member 3 to rotate through the second pin 10. When the push handle 4 is pressed, the push handle 4 swings relative to the push shaft seat 2, the push groove 9 presses the second pin 10, and the second pin 10 slides and rotates along the push groove 9, pushing the rotary locking member 3 to rotate.

[0043] In this embodiment, the setting direction of the second pin 10 is the same as that of the first pin 7, both being perpendicular to the glue dispensing direction. There are two second pins 10, respectively located on the left and right sides of the rotary locking member 3, and the number of pressing grooves 9 corresponds one-to-one with the number of second pins 10.

[0044] In this embodiment, the push handle 4 can slide along the glue dispensing direction. The push handle 4 is set in a direction perpendicular to the glue dispensing direction. The top of the push handle 4 is hinged to the push shaft seat 2. The push groove 9 is set near the top of the push handle 4 and is located inside the housing 1. When the push handle 4 is pressed, the lower end of the push handle 4 swings forward along the glue dispensing direction, causing the push groove 9 to swing forward along the glue dispensing direction. The inner wall of the push groove 9 acts on the second pin 10 with a forward force, causing the rotary locking member 3 to rotate forward along the glue dispensing direction around the axis of the second pin 10, thereby locking the glue rod 16 in the glue rod channel 8.

[0045] The glue rod channel 8 can be a round hole, a square hole, or other groove-shaped structure, as long as the glue rod 16 can be fitted into the rotary locking member 3.

[0046] Please refer to Figures 8 and 9. To ensure the locking effect of the rotary locking component 3, a pressing locking surface 11 is provided on the inner surface of the glue rod channel 8. The pressing locking surface 11 is an arc-shaped surface adapted to the surface of the glue rod 16. The pressing locking surface 11 makes frictional contact with the surface of the glue rod 16 to achieve the locking purpose of the glue rod 16. There can be one or two pressing locking surfaces 11. Specific solutions include: 1. One pressing locking surface 11 is provided at the top of the glue rod channel 8 and near the tail end of the housing 1; 2. One pressing locking surface 11 is provided at the bottom of the glue rod channel 8 and near the front end of the housing 1; 3. Referring to Figures 8 and 9, there are two pressing locking surfaces 11, one of which is provided at the top of the glue rod channel 8 and near the tail end of the housing 1, and the other is provided at the bottom of the glue rod channel 8 and near the front end of the housing 1. All three methods can achieve the locking effect of the glue stick 16. When the pressing and locking surface 11 is only provided at the top or bottom, the glue stick 16 can be locked on one side. When a pressing and locking surface 11 is provided on the upper and lower surfaces of the glue stick 16 respectively, double-sided locking can be achieved. Not only is the locking effect of the glue stick 16 better and the glue dispensing more stable, but the upper and lower parts can also prevent the glue stick 16 from deforming, being damaged or breaking. Users no longer need to worry about excessive pressure causing damage to the glue stick 16. At the same time, the two-point cooperation can stably lock glue sticks 16 of different diameters, which is suitable for glue sticks 16 of different specifications.

[0047] The pressing and locking surface 11 is an inwardly recessed arc surface. The arc surface gradually expands outward from the inside of the rotary locking part 3 toward the outer end face. The pressing and locking surface 11 can be adapted to the outer peripheral surface of the glue rod.

[0048] To further improve the locking effect of the glue rod 16, an auxiliary channel for the glue rod is provided on the push shaft seat 2. The inner surface of the auxiliary channel is provided with an auxiliary pressing part 12 that fits against the surface of the glue rod 16. The auxiliary pressing part 12 is an arc-shaped surface adapted to the surface of the glue rod 16, as shown in Figure 10. The auxiliary pressing part 12 acts as a pressing point, cooperating with the upper and lower pressing and locking surfaces 11 to form a three-point (three arc-shaped surfaces) clamping, which will help to stabilize the glue rod 16. At the same time, it can naturally adapt to the large dimensional tolerances of the glue rod 16 surface. When the glue rod 16 is stably clamped, the resistance encountered by the push handle 4 when pressing and swinging is greater than the resistance to pushing forward, and glue feeding will start directly.

[0049] To achieve automatic reset of the long-stroke glue stick pressing structure, an elastic element 13 is provided between the tail end of the housing 1 and the pressing handle 4. One end of the elastic element 13 is connected to the pressing handle 4, and the other end is connected to the tail end of the housing 1. The elastic element 13 is angled towards the rear end to stretch and pull the pressing handle 4. The elastic element 13 allows the pressing handle 4 to automatically return to its initial position, realizing the reciprocating glue pushing operation. In this embodiment, the elastic element 13 is a tension spring.

[0050] During operation, the front end of the tension spring is connected to the push handle 4, and the rear end of the tension spring is connected to the tail end of the housing 1. When the push handle 4 slides forward along the glue dispensing direction to push glue, the push handle 4 stretches the tension spring, causing the tension spring to generate a stretching force. After the push handle 4 finishes pushing the glue, the external force of the push handle 4 disappears. At this time, the push handle 4 slides backward along the glue dispensing direction under the action of the stretching force of the tension spring, thereby resetting.

[0051] A fixed handle 14 is provided at the head (front) or middle of the housing 1, and a push handle 4 is located behind the fixed handle 14. The fixed handle 14 is located at the front or middle of the housing 1. When the fixed handle 14 and the push handle 4 are held at the same time, it helps to push the push handle 4 stably, so as to achieve the purpose of long stroke and stable glue pushing. Of course, if the fixed handle 14 is not provided, the operator can also push glue by holding the outer surface of the housing 1 with one hand and pushing the push handle 4 with the other hand. However, when the fixed handle 14 is provided, the operator can hold both handles at the same time with one hand to push glue independently. At this time, a slow and stable grip can be achieved, and the operation is more convenient.

[0052] The front end of the push handle 4 has a groove corresponding to the rear end of the fixed handle 14. When the push handle 4 is pressed against the fixed handle 14, the misaligned concave and convex edges interlock. This design aims to further extend the continuous pressing stroke. At any moment of pressing, releasing the push handle 4 will cause the obliquely stretched elastic element 13 to pull the push handle 4 and preferentially rotate it, thus releasing the locking of the rubber rod 16, achieving the effect of normal mechanism reset while the rubber rod 16 remains in its original position.

[0053] In this embodiment, a fixed handle 14 is provided in the middle of the housing 1. The fixed handle 14 serves as the main grip point, which can ensure that the operator firmly grips the hot melt tool and prevent the hot melt tool from shaking or shifting during the application of force.

[0054] Furthermore, the outer surface of the fixed handle 14 can be provided with anti-slip parts to further improve the operator's grip stability. Of course, the outer surface of the push handle 4 can also be provided with anti-slip parts.

[0055] In this embodiment, the anti-slip part can be multiple raised strips, thereby increasing the friction between the operator's hand and the fixed handle 14, or increasing the friction between the operator's hand and the push handle 4. Of course, the anti-slip part can also be multiple raised dots.

[0056] The switch and handle are mounted to the rear end face of the fixed handle 14 to ensure that accidental activation and cord tangling are not caused.

[0057] The side of the push handle 4 is provided with a handle guide groove 15, and the side of the housing 1 is provided with a handle guide strip that cooperates with the handle guide groove 15. There is a pre-reserved movable gap between the handle guide groove 15 and the handle guide strip in the vertical direction. The movable gap has a certain margin to ensure that it can move freely back and forth under different clamping angles.

[0058] In this embodiment, the handle guide groove 15 is set in the same direction as the glue dispensing direction, and the handle guide strip is also set in the same direction as the glue dispensing direction. During the assembly of the push handle 4 and the housing 1, the handle guide strip can slide into the handle guide groove 15, thereby restricting the sliding direction of the push handle 4 to be consistent with the glue dispensing direction.

[0059] The rotary locking member 3 is hinged inside 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.

[0060] The working principle of this embodiment is as follows:

[0061] The push handle 4 is pulled by the elastic element 13. When the push handle 4 is held, due to the lower damping of the rotary joint and the lighter mass of the push handle 4, the rotation state of the push handle 4 will be triggered first (it will be triggered first at all times). Since the push groove 9 of the push handle 4 and the pin 10 of the rotary locking element 3 form a moving joint linkage, and the rotary locking element 3 is assembled in the push shaft seat 2 through the action of two pins 7, the rotary locking element 3 will be driven to rotate.

[0062] Before the dispensing operation, when the rotary locking part 3 is not swinging, the glue rod channel 8 is directly opposite the glue rod hole of the housing 1. The glue rod 16 can be inserted from the tail end of the housing 1 through the glue rod channel 8 to complete the insertion of the glue rod 16. See Figure 2 for the state.

[0063] When dispensing glue, the operator simultaneously holds the push handle 4 and the fixed handle 14. The push handle 4 first rotates at a small angle against the tension of the elastic element 13, simultaneously driving the rotary locking element 3 to rotate around the push shaft seat 2. After the rotary locking element 3 is tilted and rotated, the glue rod channel 8 is no longer directly aligned with the glue rod hole of the housing 1. At this time, the rotary locking element 3 gradually clamps the surface of the glue rod 16. The locked state of the glue rod 16 is shown in Figure 6. When the glue rod 16 is completely locked, the push handle 4 can no longer rotate. At this time, the push handle 4, the rotary locking element 3, and the glue rod 16 form a whole. Continue applying force to the push handle 4. The push handle 4 will cause the rotary locking part 3, the push shaft seat 2, and the glue rod 16 to slide forward slowly, achieving stable glue dispensing from the glue rod 16. See Figure 7 for the state after glue dispensing is completed. After the glue rod 16 has finished dispensing glue, release the push handle 4. Under the action of the elastic part 13, the push handle 4 will first rotate, causing the rotary locking part 3 to return from the tilted position to the vertical position, releasing the glue rod 16. Then, under the action of the elastic part 13, the push handle 4, the rotary locking part 3, and the push shaft seat 2 will slide backward until they stop, waiting for the next operation.

[0064] In this embodiment, the glue gun has multiple interconnected kinematic pairs inside. When the handle is gripped, pressing the handle 4 will preferentially rotate a small angle to clamp and lock the glue stick 16 inside. Regardless of whether the diameter of the glue stick 16 is larger or smaller, it can adapt to its diameter and lock firmly. After locking, it can move back and forth as a whole. When the hand is released, the lock is preferentially released and naturally resets. When a new glue stick 16 is placed, the lock is also in the unlocked state. The entire process is automatically triggered and requires no other action from the user.

[0065] This device places the pressure handle 4 at the tail end of the housing 1, making full use of the length of the housing 1. It achieves long-stroke adhesive application through free parallel movement back and forth. Furthermore, the device allows for a stable adhesive application by allowing the hand to simultaneously grip both the pressure handle 4 and the fixed handle 14, enabling gradual tightening. This device also boasts advantages such as simplified structure, low cost, and simple manufacturing process. It achieves stable adhesive application over long distances while avoiding the risks of deformation, slippage, and breakage of the glue stick 16, providing an excellent user experience.

[0066] The main difference between this embodiment and the previous one lies in the position of the push-pull groove 9. In this embodiment, a second pin 10 is connected to the push-pull handle 4, and a push-pull groove 9 is provided on the rotary locking member 3. The sliding limit of the second pin 10 is located within the push-pull groove 9. When the push-pull handle 4 swings, the second pin 10 pushes the rotary locking member 3 to rotate through the push-pull groove 9. Its working principle is basically the same as that of Embodiment 1, and will not be described again here. Of course, the design of placing the push-pull groove 9 on the push-pull handle 4 is the optimal solution for the maximum rotation angle of the rotary member.

[0067] In this embodiment, the setting direction of the second pin 10 is the same as that of the first pin 7, both being perpendicular to the dispensing direction. There are two second pins 10, each located on the left and right sides of the push handle 4. The number of push grooves 9 corresponds one-to-one with the number of second pins 10, and each push groove 9 is located on the left and right sides of the rotary locking member 3, thus engaging with each of the two second pins 10 individually.

[0068] During operation, the push handle 4 can slide along the glue dispensing direction. The push handle 4 is set perpendicular to the glue dispensing direction. The top of the push handle 4 is hinged to the push shaft seat 2. The second pin 10 is set near the top of the push handle 4 and is located inside the housing 1. When the push handle 4 is pressed, the lower end of the push handle 4 swings forward along the glue dispensing direction, causing the second pin 10 to swing forward along the glue dispensing direction. The outer surface of the second pin 10 acts on the inner surface of the push groove 9 with a forward force, causing the rotary locking member 3 to rotate forward along the glue dispensing direction around the axis of the second pin 10, thereby locking the glue rod 16 in the glue rod channel 8.

[0069] The foregoing has shown and described the basic principles, main features, and advantages of this disclosure. Those skilled in the art should understand that this disclosure is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this disclosure. Various changes and modifications can be made to this disclosure without departing from its spirit and scope, and all such changes and modifications fall within the scope of this disclosure as claimed. The scope of protection of this disclosure is defined by the appended claims and their equivalents. Industrial applicability

[0070] This device places the push handle at the rear end of the housing, making full use of the length of both ends. By moving freely back and forth in parallel, it achieves a long stroke for dispensing adhesive. Not only is the stroke large, but it also eliminates the need for repeated pressing to dispense adhesive. The hand only needs to maintain a pushing motion to achieve continuous dispensing of adhesive over a long stroke. Furthermore, the device allows for a stable dispensing of adhesive by slowly tightening the grip when the hand can simultaneously hold both the push handle and the fixed handle. In addition, this device has the advantages of a simple structure, low cost, and simple manufacturing process, and avoids the risks of adhesive stick deformation, slippage, and breakage, providing an excellent user experience.

Claims

1. A long-stroke glue rod pressing structure, configured on a hot melt tool, characterized in that, include: A push-shaft seat is located inside the housing of the hot melt tool and is configured 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 rubber rod pressing structure as described in claim 1, characterized in that: The push shaft seat is hinged with a rotary locking member configured to lock 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 rubber rod pressing structure as described in claim 2, characterized in that: The left and right sides of the rotary locking member are rotatably connected to the push shaft seat by a pin, and can rotate clockwise or counterclockwise around the pin.

4. The long-stroke rubber rod pressing structure as described in any one of claims 2-3, characterized in that: One end of the push handle is hinged to the push shaft seat, and the other end of the push handle is connected to the rotary locking member. The push handle is configured to drive the rotary locking member to rotate for locking or releasing when it swings.

5. The long-stroke rubber rod pressing structure as described in claim 4, characterized in that: 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.

6. The long-stroke rubber rod pressing structure as described in claim 4, characterized in that: A second pin is connected to the push handle, and a push groove is provided on the rotary locking member. The second pin slides within the push groove. When the push handle swings, the second pin pushes the rotary locking member to rotate through the push groove.

7. The long-stroke rubber rod pressing structure as described in any one of claims 2-4, characterized in that: 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.

8. The long-stroke rubber rod pressing structure as described in claim 7, characterized in that: The pressing and locking surface is an inwardly concave arc surface, which gradually expands outward from the inside of the rotary locking member toward the outer end face.

9. The long-stroke rubber rod pressing structure as described in claim 7, characterized in that: The clamping and locking surface is located at the top of the inner surface of the glue rod channel, and the clamping and locking surface is positioned towards the tail end of the housing.

10. The long-stroke rubber rod pressing structure as described in claim 7, characterized in that: The clamping and locking surface is located at the bottom end of the inner surface of the glue rod channel, and the clamping and locking surface is positioned towards the front end of the housing.

11. The long-stroke rubber rod pressing structure as described in claim 7, characterized in that: The pressing and locking surfaces are located at the top and bottom of the inner surface of the glue rod channel.

12. The long-stroke rubber rod pressing structure as described in any one of claims 1-11, characterized in that: 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.

13. The long-stroke rubber rod pressing structure as described in any one of claims 1-12, characterized in that: The housing is provided with a bearing seat cavity, the bearing seat cavity is oriented in the same direction as the glue dispensing direction, and the push slide rail is disposed in the bearing seat cavity.

14. The long-stroke rubber rod pressing structure as described in any one of claims 1-13, characterized in that: The surface of the push shaft seat is provided with a push guide groove, the push guide groove is slidably engaged with the push slide rail, and the push shaft seat is slidably engaged with the push guide rail through the push guide groove.

15. The long-stroke rubber rod pressing structure as described in any one of claims 1-13, characterized in that: The surface of the push shaft seat is provided with a push guide block, the push guide block is slidably engaged with the push slide rail, and the push shaft seat is slidably engaged with the push guide rail through the push guide block.

16. A 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 15, wherein an elastic element is provided between the tail end of the housing and the pressing handle.

17. The hot melt tool as described in claim 16, characterized in that: The elastic element is a tension spring.

18. The hot melt tool as described in claim 16, characterized in that: The housing has a fixed handle at the head or middle, and the push handle is located behind the fixed handle.

19. The hot melt tool as described in claim 18, characterized in that: The front end face of the push handle is provided with a slot, which corresponds to the rear end face of the fixed handle. When the push handle is pressed against the rear end face of the fixed handle, the slot engages with the rear end face of the fixed handle to extend the pressing stroke of the push handle.

20. The hot melt tool as described in any one of claims 16-19, characterized in that: 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 mates with the handle guide groove.

Images