Electric glue gun and opening device

Abstract

The application discloses an electric glue gun, comprising: a casing; a glue container supported at the front end of the casing, the glue container comprising a glue outlet; a power mechanism comprising a motor for providing power to the tool; a transmission mechanism comprising a push rod assembly connected to the glue container, the push rod assembly being driven to move by the power mechanism; further comprising an opening device for opening the glue outlet, the opening device comprising: a shearing seat connected to the casing, comprising a shearing opening allowing the glue outlet of the glue container to be inserted; a cutting assembly comprising a cutting piece arranged in the shearing seat, the cutting piece being adapted to cut the glue outlet.

Description

Technical Field

[0001] This invention relates to a power tool, specifically to an electric glue gun and an opening device. Background Technology

[0002] Electric glue guns are typically configured with a motor driving a lead screw to rotate. The lead screw is supported in a lead screw nut and rotates and moves linearly relative to the lead screw nut, thereby extruding the adhesive from the glue cartridge. The cartridge usually contains adhesive, and one end of the cartridge has a thin nozzle for dispensing the adhesive. To preserve the adhesive, the nozzle is usually closed, so it needs to be opened before use. In current technology, since the glue gun itself does not have a cutting mechanism, other tools such as scissors or knives are usually required to open the nozzle. When the user does not have a cutting device available, opening the nozzle is difficult, which hinders user convenience. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the present invention aims to provide an electric glue gun and an opening device capable of cutting the glue dispensing section of a glue tube.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An electric glue gun, comprising:

[0006] chassis;

[0007] A glue container is supported at the front end of the housing, and the glue container includes a glue dispensing section;

[0008] Power mechanism, including electric motors that provide power to tools;

[0009] The transmission mechanism includes a push rod connected to the glue container, the push rod being driven to move back and forth by the power mechanism;

[0010] It also includes an opening device for opening the dispensing section, the opening device comprising:

[0011] A shearing seat, connected to the housing, includes a shearing port that allows the dispensing portion of the glue container to be inserted;

[0012] The cutting assembly includes a cutting element disposed in the shear seat, the cutting element being adapted to cut the dispensing portion.

[0013] Furthermore, the shear seat is detachably connected to the housing.

[0014] Furthermore, the electric glue gun also includes a belt buckle detachably connected to the housing, and the shearing seat is detachably connected to the belt buckle.

[0015] Furthermore, the shearing seat includes a buckle or slot that is detachably connected to the belt buckle.

[0016] Furthermore, the belt buckle includes:

[0017] The fuselage connection part is detachably connected to the casing.

[0018] The belt connection portion is adapted to engage with the buckle, or the belt connection portion is adapted to insert into the slot.

[0019] Furthermore, the cutting assembly also includes:

[0020] A mobile frame includes an operating part and a mounting part. The operating part extends out of the shearing seat, the mounting part extends into the shearing seat, and the cutting element is disposed on the mounting part.

[0021] A biasing pressure element is provided between the movable frame and the shearing seat to apply a biasing pressure to the movable frame to disengage the cutting element from the shearing opening.

[0022] Furthermore, the shear seat includes:

[0023] A first shearing channel is disposed approximately perpendicular to the moving direction of the cutting member. A first shearing opening is formed on the first shearing channel to allow the dispensing part to enter. The cutting member reciprocates through the first shearing channel.

[0024] Furthermore, the shear seat also includes:

[0025] The second shearing channel is set at an acute or obtuse angle to the moving direction of the cutting member. A second shearing opening is formed on the second shearing channel to allow the glue outlet to enter. The cutting member reciprocates through the second shearing channel.

[0026] Furthermore, the inner diameters of both the first and second shearing openings are less than or equal to 12 mm; and the depths of both the first and / or second shearing channels are greater than or equal to 16 mm.

[0027] Furthermore, the cutting assembly also includes a movable member connected to the push rod, the push rod driving the movable member to move relative to the cutting member, and the cutting opening being located on the movement path of the movable member.

[0028] Furthermore, the shear seat is located at the rear end of the housing, and the movable component is connected to the push rod located on the rear side of the housing.

[0029] Furthermore, the shear seat is a U-shaped seat, including a pair of sidewalls and an opening formed between the pair of sidewalls, the opening extending along the axial direction of the push rod, and the shearing openings are respectively provided on the sidewalls;

[0030] The movable element includes a protrusion that radially protrudes from the push rod, and the push rod drives the protrusion into or out of the opening.

[0031] An opening device for opening the dispensing section of an adhesive container, comprising:

[0032] The shearing unit includes a shearing port that allows the dispensing part of the glue container to be inserted, and a connector that is detachably connected to the glue gun.

[0033] A cutting assembly includes a cutting element and a biasing force element, wherein the cutting element is movably disposed in the shearing seat, and the biasing force element applies a biasing force to the cutting element to place it in an uncut position.

[0034] Furthermore, the cutting assembly also includes a movable frame, which includes an operating part and a mounting part. The operating part extends out of the shearing seat, the mounting part extends into the shearing seat, the cutting element is disposed on the mounting part, and the biasing force element is disposed between the movable frame and the shearing seat.

[0035] Furthermore, the shear seat includes:

[0036] A first shearing channel is provided approximately perpendicular to the moving direction of the cutting member. A first shearing opening is formed on the first shearing channel to allow the dispensing part to enter. The cutting member reciprocates through the first shearing channel.

[0037] The second shearing channel is set at an acute or obtuse angle to the moving direction of the cutting member. A second shearing opening is formed on the second shearing channel to allow the dispensing part to enter. The cutting member reciprocates through the second shearing channel.

[0038] Furthermore, the inner diameters of the first shearing opening and the second shearing opening are less than or equal to 12 mm; the depths of the first shearing channel and / or the second shearing channel are both greater than or equal to 16 mm.

[0039] The advantages of this invention are:

[0040] The electric glue gun of the present invention has an opening device on the electric glue gun, which can meet the opening requirements without the need for additional opening equipment, and has little impact on the structure of the machine body. It is convenient to operate and helps to improve the user experience. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of one embodiment of the electric glue gun of the present invention;

[0042] Figure 2 yes Figure 1 Front view of the electric glue gun in the picture;

[0043] Figure 3 yes Figure 1 A schematic diagram of the structure of an electric glue gun with a belt buckle installed;

[0044] Figure 4 yes Figure 1 A schematic diagram of the opening device in one embodiment is shown;

[0045] Figure 5 yes Figure 4 Assembly diagram of the central opening device;

[0046] Figure 6 yes Figure 4 Rear view of the central opening device;

[0047] Figure 7 This is a schematic diagram of another embodiment of the electric glue gun of the present invention;

[0048] Figure 8 yes Figure 7 Assembly diagram of the central opening device;

[0049] Figure 9 yes Figure 7 Front view of the centrally opened device;

[0050] Figure 10 yes Figure 8 Right view of the centrally opened device;

[0051] Figure 11 This is a schematic diagram of another embodiment of the electric glue gun of the present invention;

[0052] Figure 12 yes Figure 11 A schematic diagram of the internal structure of the electric glue gun after opening the left side of the casing.

[0053] Explanation of reference numerals in the attached figures:

[0054] 100 - Glue gun; 110 - Housing;

[0055] 200 - Output mechanism; 210 - Glue container; 211 - Glue dispensing section;

[0056] 300 - Power mechanism;

[0057] 400 - Control mechanism; 410 - Switch assembly;

[0058] 500 - Transmission mechanism;

[0059] 600 - Opening device; 610 - Shearing seat; 611 - Buckle; 612 - Shearing opening; 620 - Cutting assembly; 621 - Cutting piece; 622 - Moving frame; 622a - Operating part; 622b - Mounting part; 623 - Eccentric pressure component;

[0060] 710-Shearing seat; 711-Snap fastener; 713-First shearing channel; 713a-First shearing opening; 714-Second shearing channel; 714a-Second shearing opening; 720-Cutting assembly; 721-Cutting piece; 722-Moving frame; 723-Eccentric pressure component;

[0061] 800 - Belt buckle; 810 - Body connection part; 820 - Belt connection part;

[0062] 910-Shearing seat; 911-Shearing opening; 912-Opening; 921-Cutting part; 922-Moving part. Detailed Implementation

[0063] like Figures 1-2 The image shows an electric glue gun according to the present invention, specifically an electric glue gun 100, used for handheld glue application. The glue gun 100 includes a housing 110, an output mechanism 200, a power mechanism 300, a control mechanism 400, and a transmission mechanism 500.

[0064] See Appendix for details. Figure 1 The output mechanism 200 is located at the front end of the housing 110. A transmission mechanism connects the motor 300 and the output mechanism 200. The output mechanism 200 includes a glue container 210, which stores adhesive and has a glue dispensing section 211 for dispensing glue. A power mechanism 300 provides power to the electric glue gun 100; in this embodiment, the power mechanism 300 is specifically a motor.

[0065] The electric glue gun in this embodiment of the invention also includes a battery pack (not shown in the figures) and a switch assembly 410. The battery pack provides power to the motor. The switch assembly 410 in this embodiment is a rotary switch, which is connected to the power mechanism 300 via a control mechanism 400. The knob can control the on / off state of the power mechanism 300 through the control mechanism 400, and can also adjust the output speed. Its speed adjustment principle is the same as that of existing power tools and will not be described in detail here.

[0066] The transmission mechanism 500 in this embodiment of the invention includes a push rod assembly, wherein the push rod assembly includes a push rod and a push plate disposed in the glue container. Specifically, the push rod is a lead screw that extends in the front-to-back direction. Figure 2(The left and right directions in the text are the same as the front and back directions). A push plate is fixedly installed at the front end of the lead screw. The push plate squeezes the adhesive as the lead screw moves forward. When the glue dispensing operation is performed normally, the push rod assembly moves forward. When the push rod needs to be reset to replace the glue container 210, the push rod assembly retracts to the initial position.

[0067] See appendix Figure 3 The electric glue gun 100 also includes a belt buckle 800 detachably connected to the housing 110. The belt buckle 800 is detachably connected to the entire machine. The belt buckle 800 includes a body connecting part 810 and a belt connecting part 820. The body connecting part 810 is detachably connected to the housing 110, and the connection method can be a buckle, slot, or screw connection, which will not be described in detail here. When the belt connecting part 820 is used as a hook, it can be hooked onto a belt unit, such as a waist belt, shoulder strap, or leg strap, to meet the user's need for convenient carrying.

[0068] The electric glue gun 100 also includes an opening device 600 for opening the glue dispensing section 211. The opening device 600 includes a shear seat 610 and a cutting assembly 620. The shear seat 610 includes a shearing port 612 that allows the glue dispensing section 211 of the glue container 610 to be inserted. The shear seat 610 is connected to the housing 110 via a belt buckle 800. The cutting assembly 620 includes a cutting element 621 disposed in the shear seat 610, which is adapted to cut the glue dispensing section 211.

[0069] See appendix Figure 1 In one embodiment of the present invention, the opening device 600 is detachably connected to the housing 110. In this case, the opening device 600 can be used as an accessory of the electric glue gun 100. When needed, the user can assemble it onto the whole machine by choice, and when not needed, the user can choose to remove it by choice.

[0070] like Figures 4-6 As shown, in this embodiment, the shear seat 610 and the belt connection portion 820 are detachably connected. Specifically, as... Figure 6 As shown, the shearing seat 610 includes a buckle 611 detachably connected to the belt buckle 800, and the belt connecting portion 820 is adapted to engage with the buckle 611. This embodiment provides three buckles 611, but two or more buckles 611 can also be provided. Alternatively, as an alternative embodiment, the shearing seat 610 may also include a slot detachably connected to the belt buckle 800, and the belt connecting portion 820 is adapted to be inserted into the slot. Alternatively, the shearing seat 610 can also be connected to the belt buckle 800 by screws.

[0071] The opening device is connected to the machine body via a belt buckle, which allows for flexible installation by the user and avoids modifications to the overall structure of the machine. The opening function is added without changing the overall structure of the machine, giving users a better user experience.

[0072] In this embodiment, the cutting assembly 620 also includes a movable frame 622, such as Figure 5 As shown, the movable frame 622 includes an operation part 622a and a mounting part 622b. The operation part 622a extends out of the shear seat 610 for user operation, and the mounting part 622b extends into the shear seat 610. A cutting element 621 is mounted on the mounting part 622b.

[0073] The cutting assembly 620 also includes a biasing force member 623 for causing the movable frame 22 to spring back. The biasing force member 623 is disposed between the operating part 622a and the shearing seat 610. The shearing seat 610 has a boss or mounting plate for mounting the biasing force member 623 inside. The biasing force member 623 is specifically a spring, used to apply a biasing force to the movable frame 622 to disengage the cutting piece 621 from the shearing opening 612. The bottom end of the movable frame 622 is also provided with an anti-disengagement buckle to prevent the movable frame 622 from disengaging from the shearing seat 710.

[0074] The shearing opening 612 can be a round hole with an inner diameter of less than or equal to 12 mm. Of course, it can also be an opening of other shapes, which is not limited here.

[0075] Of course, as an alternative implementation, the shearing seat 610 can also be configured to be detachably connected to the housing 110, for example, by snap-fit ​​connection, plug-in connection, or threaded connection. In this case, the shearing seat 610 is provided with claws, slots, or connecting holes, and the housing 110 is provided with corresponding buckles, inserts, pins, or connecting holes, etc. When in use, the shearing seat 610 can be directly connected to the housing 110. When not in use, the shearing seat 610 is detachable.

[0076] like Figure 7 The following is another embodiment of the present invention. The opening device 700 is also an accessory of the electric glue gun 100. When needed, the user can choose to assemble it onto the whole machine. When not needed, the user can choose to remove it.

[0077] In this embodiment, the shear seat 710 is also detachably connected to the belt connection part 820, but the difference between it and the previous embodiment is that the structure of the shear seat 710 is different.

[0078] Specifically, see Appendix Figure 8 - Appendix Figure 9In this embodiment, the cutting assembly 720 also includes a movable frame 722, which includes an operating part 722a and a mounting part 722b. The operating part 722a extends out of the shearing seat 710 for user operation, and the mounting part 722b extends into the shearing seat 710. The cutting element 721 is mounted on the mounting part 722b.

[0079] The cutting assembly 720 also includes a biasing force member 723 for springing back the movable frame 722, such as Figure 9 As shown, the biasing force member 723 is disposed between the operating part 722a and the shearing seat 710. The top of the shearing seat 710 is provided with a mounting protrusion for mounting the biasing force member 723. The biasing force member 723 is specifically a spring, used to apply a biasing force to the moving frame 722 to disengage the cutting piece 721 from the shearing opening. The bottom end of the moving frame 722 is also provided with an anti-disengagement buckle to prevent the moving frame 722 from disengaging from the shearing seat 710.

[0080] See appendix Figure 8 -Appendix Figure 10 In this embodiment, the shearing seat 710 further includes a first shearing channel 713 and a second shearing channel 714, wherein a first shearing opening 713a is formed on the first shearing channel 713 to allow the glue dispensing part 211 to enter, and a second shearing opening 714a is formed on the second shearing channel 714 to allow the glue dispensing part 211 to enter, wherein the cutting member 721 can reciprocate through the first shearing channel 713 and the second shearing channel 714.

[0081] Specifically, in this embodiment, the ends of the first cutting channel 713 and the second cutting channel 714 are connected, and the cutting element 721 can reciprocate through the end of the first cutting channel 713 and the second cutting channel 714 that are connected. Of course, the first cutting channel 713 can also be configured not to be connected to the second cutting channel 714, in which case the ends of the first cutting channel 713 and the second cutting end 714 are both located on the cutting path of the cutting element 721.

[0082] In this embodiment, the first cutting channel 713 is set approximately perpendicular to the moving direction of the cutting member 721. By providing the first cutting channel 713, which is approximately perpendicular to the moving direction of the cutting member 721, vertical cutting of the glue dispensing part 211 can be achieved. Vertical cutting refers to cutting along a direction approximately perpendicular to the axis of the glue container 210, thereby obtaining a vertical cut. At this time, the user's glue application operation at the edges and corners can be satisfied.

[0083] The second cutting channel 714 is not perpendicular to the moving direction of the cutting element 721; in other words, the second cutting channel 714 is set at an angle to the moving direction of the cutting element 721, and this angle can be acute or obtuse. By providing a second cutting channel 714 that is not perpendicular to the moving direction of the cutting element 721, a bevel cut can be made on the glue dispensing part 211. This bevel cut refers to a cut at a non-90° angle to the axis of the glue container 210, thereby obtaining a beveled cut. This allows the user to perform glue dispensing operations on, for example, a flat surface.

[0084] Therefore, by setting up two cutting channels, we can not only meet the usage habits of different users, but also allow users to choose the appropriate cutting mode according to the needs of the operating environment, which is conducive to improving the user experience.

[0085] In this embodiment, the first shearing channel 713 and the second shearing channel 714 can be cylindrical or conical channels. The inner diameter of the first shearing opening 713a and / or the second shearing opening 714a is less than or equal to 15 mm, preferably less than or equal to 12 mm. The depth of the first shearing channel 713 and / or the second shearing channel 714 is greater than or equal to 10 mm, preferably greater than or equal to 16 mm. The depth of the shearing channel refers to the axial distance between the shearing opening and the plane containing the cutting element 721 along its axial direction. By setting the inner diameter of the shearing opening and the depth of the shearing channel within the above ranges, over-cutting of the dispensing part can be effectively avoided. Furthermore, it can prevent users from accidentally inserting their fingers into the cutting element, thus preventing accidental injury during operation and ensuring user safety.

[0086] Of course, in this embodiment, the shearing seat 710 also includes a buckle 711 detachably connected to the belt buckle 800, and the belt connecting portion 820 is adapted to engage with the buckle 711. This embodiment provides three buckles 711, but two or more buckles 711 can also be provided. Alternatively, as an alternative embodiment, the shearing seat 710 may also include a slot detachably connected to the belt buckle 800, and the belt connecting portion 820 is adapted to be inserted into the slot.

[0087] With a detachable opening device, it can be fixed to the body for convenient use, or it can be removed when not in use, reducing the impact on the use of the whole machine. Users can choose to install it on the body or remove it from the body, which helps to improve the user experience.

[0088] like Figures 11-12 The following is another embodiment of the present invention. The cutting device can also be directly disposed on the housing 110. In this embodiment, the cutting device is directly formed or fixed on the housing 110.

[0089] Specifically, the shearing device in this embodiment includes a shearing seat 910 and a cutting assembly, wherein the shearing seat 910 is disposed at the rear end of the housing 110, for example above the push rod assembly at the rear end of the housing.

[0090] In this embodiment, the shear seat 910 is a U-shaped seat with its opening facing downwards, which facilitates the discharge of the cut waste. Shearing openings 911 are provided on both side walls of the U-shaped seat, and each shearing opening 911 can be a circular hole. An opening 912 is formed between the pair of side walls, extending axially along the lead screw.

[0091] The cutting assembly 920 includes a cutting element 921 and a moving element 922. The cutting element 921 is disposed in the opening 912 of the shear seat 910. The moving element 922 is connected to the push rod assembly, which drives the moving element 922 to move relative to the cutting element 921. The shearing opening 911 is located on the moving path of the moving element 922. Specifically, the moving element 922 includes a protrusion protruding from the lead screw 510. The lead screw drives the protrusion into or out of the opening 912. Specifically, the lead screw moving forward drives the protrusion into the opening 912, and the lead screw retracting drives the protrusion out of the opening 912. In this embodiment, the moving element 922 is a protrusion disposed on the handle, such as... Figure 12 As shown, a handle is located at the rear end of the lead screw for manually pulling the push rod assembly to reset, and a protrusion serving as a moving part 922 is provided at the front end of the handle.

[0092] When it is necessary to cut the glue outlet 211, first insert the glue outlet 211 into the cutting port 911, start the switch assembly 410, start the power mechanism 300 and drive the lead screw to move forward linearly through the transmission mechanism 400, thereby driving the moving part 922 into the opening 912. The moving part 922 moves forward and squeezes and pushes the glue outlet 211 relative to the cutting part 921, thereby realizing the cutting opening of the glue outlet 211.

[0093] Of course, as an alternative implementation, the positions of the moving part 922 and the cutting part 921 can be interchanged. A protrusion is fixedly provided in the opening 912, and the cutting part 921 is connected to the lead screw. The linear movement of the lead screw drives the cutting part 921 to move relative to the protrusion, thereby realizing the cutting operation.

[0094] This embodiment satisfies the user's opening needs during operation by having an opening device directly on the electric glue gun. Since the opening device is located at the rear of the machine body, when the glue in the glue container is almost used up, the screw is also close to its rear limit position. In other words, the moving block 922 is at a position close to the shear seat 910. When changing the glue container, simply insert the glue dispensing part of the new container into the shearing port, turn on the switch, and continue to drive the screw forward to cut the opening of the glue dispensing part. After cutting, retract the screw to return to the initial position, remove the old container and replace it with the new container with the opening, and continue the glue dispensing operation. This structure conforms to the user's usage habits and does not require manual cutting or additional operations, making it convenient to operate and improving the user experience.

[0095] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of the present invention.

Claims

1. An electric glue gun, comprising: chassis; A glue container is supported at the front end of the housing, and the glue container includes a glue dispensing section; Power mechanism, including electric motors that provide power to tools; The transmission mechanism includes a push rod connected to the glue container, the push rod being driven to move back and forth by the power mechanism; Its features are, It also includes an opening device for opening the dispensing section, the opening device comprising: A shearing seat, connected to the housing, includes a shearing port that allows the dispensing portion of the glue container to be inserted; The cutting assembly includes a cutting element disposed in the shearing seat, the cutting element being adapted to cut the dispensing portion, the cutting assembly further including a movable element connected to the push rod, the push rod driving the movable element to move relative to the cutting element, the shearing opening being located on the movement path of the movable element, and the shearing seat being disposed at the rear end of the housing.

2. The electric glue gun according to claim 1, characterized in that, The movable component is connected to the push rod on the rear part of the housing.

3. The electric glue gun according to claim 2, characterized in that, The shear seat is a U-shaped seat, including a pair of sidewalls and an opening formed between the pair of sidewalls. The opening extends along the axial direction of the push rod, and the shearing opening is provided on the sidewalls respectively. The movable element includes a protrusion that radially protrudes from the push rod, and the push rod drives the protrusion into or out of the opening.

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