Caulking gun with glue nozzle shearing device

Abstract

A caulking gun with a glue nozzle shearing device comprises a push disc, a push rod, a glue containing device, a trigger, a propelling device, a retaining device and a gun body, the trigger is hinged to the middle of the gun body and matched with a grip extending from the lower portion of the gun body for caulking, the glue containing device is arranged at the front end of the gun body, and the rear end of the push rod is located outside the gun body. The front end of the push rod penetrates through the gun body and is located in the glue containing device, the push disc is arranged at the front end of the push rod, the propelling device is installed in the gun body and used for propelling the push rod, a reset spring is installed on the push rod and located between the propelling device and the gun body, and the retaining device is installed at the rear end of the gun body; a driving part is arranged in the trigger, a glue nozzle shearing device is arranged at the upper part of the grip, and the glue nozzle shearing device is driven by the driving part to shear a glue nozzle. According to the utility model, through the hidden cutting edge, the shearing operation of the rubber nozzle is handy, convenient, labor-saving and safe.

Description

Technical Field

[0001] This utility model relates to a glue gun, and more particularly to a glue gun equipped with a glue nozzle shearing device. Background Technology

[0002] Caliper guns are widely used as hand tools in home decoration, construction, and other fields, applying various types of adhesives for different purposes. The adhesive is typically equipped with a plastic nozzle to precisely apply it to surfaces, corners, gaps, or holes on the object to be treated. Therefore, the nozzle size needs to be appropriately cut to accommodate different sized objects, thus facilitating application and improving efficiency. To reduce the need for workers to carry or search for cutting tools, many caliper guns come with built-in cutting tools.

[0003] in:

[0004] Chinese patent CN 211678601 U discloses a glue gun entitled "A Glue Gun with a Blade for Cutting the Nozzle". This patent discloses a technical solution that installs a blade for cutting the nozzle on different parts of the glue gun, thus saving the operator the trouble of carrying and searching for tools. When the nozzle needs to be cut, the blade provided with the glue gun can be used for cutting at any time. However, since the blade is rotatably connected to the handle of the glue gun by a pin or can be installed in the glue-containing device by an elastic self-pressing plate, in actual cutting of the nozzle, it is necessary to hold the glue gun body or glue-containing device, which is not convenient to use. After the nozzle is cut, the blade needs to be manually rotated or pushed back to the initial position, which is inconvenient to operate and poses a safety hazard of easy cuts.

[0005] Chinese patent CN 220496831 U discloses a glue gun entitled "A Glue Gun with Cutting Function". This patent discloses a first cutting blade and a second cutting blade, with the second cutting blade fixedly mounted inside the lower end of a trigger. By pulling the trigger, the second cutting blade rotates to a second cutting through-hole located at the lower end of the handle to cut the glue nozzle. However, because the blade of the second cutting blade is exposed, it is easy to cut one's fingers during actual operation, posing a safety hazard. Summary of the Invention

[0006] To overcome the shortcomings of the existing technology, this utility model proposes a glue gun with a glue nozzle cutting device, which makes the glue nozzle cutting operation easy, convenient, labor-saving and safe.

[0007] The technical solution adopted in this utility model is:

[0008] A glue-pressing gun with a nozzle-cutting device includes a push plate, a push rod, a glue-containing device, a trigger, a propulsion device, a backstop device, and a gun body. The trigger is hinged to the middle of the gun body and cooperates with a grip extending from the lower part of the gun body for glue pressing. The glue-containing device is located at the front end of the gun body. The rear end of the push rod is located outside the gun body, and its front end passes through the gun body and is located inside the glue-containing device. The push plate is located at the front end of the push rod. The propulsion device is installed inside the gun body for propulsing the push rod. A return spring is installed on the push rod between the propulsion device and the gun body. The backstop device is installed at the rear end of the gun body. A drive unit is provided inside the trigger, and a nozzle-cutting device is provided on the upper part of the grip. The nozzle-cutting device is driven by the drive unit to cut the glue nozzle.

[0009] Furthermore, the nozzle cutting device includes a cutting blade and a cutting hole. The cutting hole is located on the upper part of the handle, and the cutting blade is installed on one side of the cutting hole and can move to the cutting hole under the drive of the drive unit to cut the nozzle.

[0010] Furthermore, the shearing blade is mounted on one side of the shearing hole via a retainer or in a grip receiving groove on one side of the shearing hole.

[0011] Furthermore, the shearing blade includes a cutting edge, which is disposed between the retainer and the handle or inserted into a receiving groove.

[0012] Furthermore, the shearing blade has a limiting structure that can cooperate with the cage or grip to limit the shearing blade from detaching from the cage or grip.

[0013] Furthermore, the limiting structure includes an oblong groove and a limiting stop embedded in the oblong groove.

[0014] Furthermore, the shearing blade is provided with a pulling part to facilitate the back-and-forth pulling operation of the shearing blade.

[0015] Furthermore, the shearing blade is provided with a pushing part, which works in conjunction with the driving part to reduce wear on the trigger drive part and improve its service life.

[0016] Furthermore, a shearing blade position retention device is provided between the shearing blade and the holder or handle, so that the shearing blade will not move back and forth when no external force is applied, thus ensuring the operator's safety.

[0017] The beneficial effects of this utility model are that the concealed cutting edge makes the nozzle cutting operation easy, convenient, labor-saving and safe. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram showing the arrangement of the drive unit and the shearing blade of this utility model.

[0020] Figure 3 This is a schematic diagram of the cooperation between the drive unit and the shearing blade of this utility model for shearing.

[0021] Figure 4 This is a schematic diagram of the cage installation of this utility model.

[0022] Figure 5 This is a schematic diagram of the shearing blade of this utility model.

[0023] In the diagram: 1. Gun body; 1a. Grip; 1b. Cutting hole; 2. Propulsion device; 3. Return spring; 4. Trigger; 4a. Drive unit; 5. Adhesive container; 6. Anti-recoil device; 7. Adhesive nozzle cutting device; 71. Cutting blade; 71a. Cutting edge; 71b. Waist-shaped groove; 71c. Pulling part; 71d. Pushing part; 72. Cage; 73. Screw; 8. Push rod; 9. Push plate. Detailed Implementation

[0024] The present invention will be further described below with reference to specific embodiments, but the present invention is not limited to these specific embodiments. Those skilled in the art should recognize that the present invention covers all alternatives, improvements and equivalents that may be included within the scope of the claims.

[0025] See Figure 1-5 This embodiment provides a glue gun with a nozzle cutting device, including a push plate 9, a push rod 8, a glue-containing device 5, a trigger 4, a propulsion device 2, a backstop device 6, and a gun body 1. The trigger 4 is hinged to the middle of the gun body 1 and cooperates with the grip 1a extending from the lower part of the gun body 1 to press glue. The glue-containing device 5 is located at the front end of the gun body 1. The rear end of the push rod 8 is located outside the gun body 1, and its front end passes through the gun body 1 and is located inside the glue-containing device 5. The push plate 9 is located at the front end of the push rod 8. The propulsion device 2 is installed inside the gun body 1 to propel the push rod 8. A return spring 3 is installed on the push rod 8 between the propulsion device 2 and the gun body 1. The backstop device 6 is installed at the rear end of the gun body 1. The trigger 4 is provided with a drive unit 4a. The upper part of the grip 1a is provided with a nozzle cutting device 7. The nozzle cutting device 7 is driven by the drive unit 4a to cut the glue nozzle.

[0026] The nozzle cutting device 7 described in this embodiment includes a cutting blade 71 and a cutting hole 1b. The cutting hole 1b is located on the upper part of the handle 1a. The cutting blade 71 is installed on one side of the cutting hole 1b and can move to the cutting hole 1b under the drive of the drive unit 4a to cut the nozzle. Specifically, the cutting blade 71 is installed on one side of the cutting hole 1b via a retainer 72, and the retainer 72 is fixed to the handle 1a by screws 73. The cutting blade 71 includes a cutting edge 71a, which is located between the retainer 72 and the handle 1a, i.e., hidden between the retainer 72 and the handle 1a, and is not exposed, thus ensuring high safety. Of course, a receiving groove can be provided on one side of the handle 1a of this invention, and the cutting blade 71 is installed in the receiving groove. The cutting edge 71a is inserted into the receiving groove.

[0027] The shearing blade 71 described in this embodiment has a limiting structure that cooperates with the retainer 72 to prevent the shearing blade 71 from detaching from the retainer 72. Specifically, the limiting structure includes a waist-shaped groove 71b and a limiting stop embedded in the waist-shaped groove 71b. In this embodiment, the waist-shaped groove 71b is provided on the shearing blade 71, and correspondingly, the limiting stop can be provided on the retainer 72 or the handle 1a. Of course, the waist-shaped groove 71b can also be provided on the retainer 72 or the handle 1a, and correspondingly, the limiting stop can be provided on the shearing blade 71.

[0028] The shearing blade 71 described in this embodiment is provided with a pulling part 71c to facilitate the back-and-forth pulling operation of the shearing blade 71. The shearing blade 71 is also provided with a pushing part 71d, which works in conjunction with the driving part 4a to reduce wear on the trigger drive part and improve its service life. Specifically, the shearing blade 71 in this embodiment has a U-shaped structure, with the cutting edge 71a and the pulling part 71c respectively located at the ends of both sides of the shearing blade 71, and the pushing part 71d located at the bent portion of the shearing blade 71. Alternatively, the shearing blade 71 can be a single piece, with the cutting edge 71a located at one end and the pulling part 71c and the pushing part 71d located at the other end.

[0029] In this embodiment, a shear blade position holding device is provided between the shear blade 71 and the retainer 72, ensuring that the shear blade 71 will not move back and forth when no external force is applied, thus guaranteeing operator safety. The shear blade position holding device may include a limiting body for limiting and an elastic body that provides support to the limiting body. The limiting body is preferably a sphere, and the elastic body is preferably a compression spring. The shear blade position holding device is disposed between the shear blade 71 and the retainer 72. Alternatively, the shear blade position holding device may be a magnetic structure, using magnetic attraction to hold the shear blade 71 in place.

[0030] In use, the nozzle is passed through the shearing hole 1b, and the trigger 4 is gently pulled back. The drive unit 4a pushes the push unit 71d, causing the shearing blade 71 to move toward the shearing hole 1b, and the cutting edge 71a cuts the nozzle. During the initial cut or after cutting, the shearing blade 71 can be moved by the pull unit 71c to pull it away from the shearing hole 1b for further cutting.

[0031] This invention features a concealed cutting edge, making nozzle cutting operations easy, convenient, labor-saving, and safe.

Claims

1. A glue-pressing gun equipped with a nozzle shearing device, comprising a push plate, a push rod, a glue-containing device, a trigger, a propulsion device, a backstop device, and a gun body, wherein the trigger is hinged to the middle of the gun body and cooperates with a grip extending from the lower part of the gun body for glue pressing; the glue-containing device is located at the front end of the gun body; the rear end of the push rod is located outside the gun body, and its front end passes through the gun body and is located inside the glue-containing device; the push plate is located at the front end of the push rod; the propulsion device is installed inside the gun body for propulsing the push rod; a return spring is installed on the push rod between the propulsion device and the gun body; and the backstop device is installed at the rear end of the gun body; characterized in that: The trigger is equipped with a drive unit, and the upper part of the grip is equipped with a nozzle cutting device, which is driven by the drive unit to cut the nozzle.

2. A glue gun with a nozzle shearing device according to claim 1, characterized in that: The nozzle cutting device includes a cutting blade and a cutting hole. The cutting hole is located on the upper part of the handle. The cutting blade is installed on one side of the cutting hole and can be moved to the cutting hole under the drive of the drive unit to cut the nozzle.

3. A glue gun with a nozzle shearing device according to claim 2, characterized in that: The shearing blade is mounted on one side of the shearing hole via a retainer or in a grip receiving groove on one side of the shearing hole.

4. A glue gun with a nozzle shearing device according to claim 3, characterized in that: The shearing blade includes a cutting edge, which is located between the retainer and the handle or inserted into a receiving groove.

5. A glue gun with a nozzle shearing device according to claim 3, characterized in that: The shearing blade has a limiting structure that can cooperate with a retainer or grip to limit the shearing blade from detaching from the retainer or grip.

6. A glue gun with a nozzle shearing device according to claim 5, characterized in that: The limiting structure includes an oblong groove and a limiting stop embedded in the oblong groove.

7. A glue gun with a nozzle shearing device according to claim 2, characterized in that: The shearing blade is provided with a pulling part.

8. A glue gun with a nozzle shearing device according to claim 2, characterized in that: The shearing blade is provided with a pushing part, which works in conjunction with the driving part to push it.

9. A glue gun with a nozzle shearing device according to claim 3, characterized in that: A shearing blade position holding device is provided between the shearing blade and the holder or handle.

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