Hot melt glue gun with three-gear power

Abstract

The utility model discloses a hot melt glue gun with three-gear power, which comprises a glue gun main body, a trigger and a gear switch are arranged on the glue gun main body, a circuit in the glue gun main body comprises a main circuit, a first branch circuit and a second branch circuit, the first branch circuit and the second branch circuit are connected into the main circuit in parallel, a first heating element is arranged on the first branch circuit, and a second heating element is arranged on the second branch circuit. Under the same voltage, the heating power of the first heating element is smaller than the heating power of the second heating element, and the gear switch is provided with a low gear, a middle gear and a high gear. When a shifting block on the gear switch is shifted, the first branch circuit and the second branch circuit can be independently electrified respectively, and the heating power of the first heating element and the heating power of the second heating element can be greatly improved. The first branch and the second branch are electrified together to correspond to the three-gear switch, a user does not need to purchase an additional hot melt glue gun, the glue spraying requirement under more working conditions can be met on one hot melt glue gun, for example, the start-up preheating time can be effectively shortened, and stable output of hot melt glue can be achieved during large-flow or small-flow glue spraying.

Description

Technical Field

[0001] The utility model relates to the technical field of hot melt glue guns, in particular to a hot melt glue gun with three gears of power. Background Art

[0002] A hot melt glue gun is a glue injection tool. By inserting a hot melt glue stick and heating it to melt, the glue is pressed out of the hot melt glue gun to the place where it needs to be bonded. After solidification, the bonding is completed. In the prior art, a heating component that can melt the glue stick is generally provided at the end of the hot melt glue gun. At the same time, the glue stick needs to be added manually from the back of the gun body.

[0003] In order to facilitate users to work under different working conditions, the existing hot melt glue guns are generally designed with two gears, namely low power gear and high power gear. By toggling the dial on the gear switch, different heating elements can be operated. Among them, when in the low gear, it is suitable for the case of small flow of glue, and when in the high gear, it is suitable for the case of large flow of glue, ensuring that the hot melt adhesive strip can be stably output after being heated and melted. However, in actual use, since the hot melt glue gun has only two gears, it can only meet ordinary use. When many users need a higher power gear (such as the need to reduce the startup preheating time, the need for a larger flow of output hot melt glue), they can only buy a higher power hot melt glue gun, which will undoubtedly increase the purchase cost, and it is not very convenient to use, and needs to be improved. Utility Model Content

[0004] In order to solve the above problems, the utility model proposes a hot melt glue gun with three gears of power.

[0005] The technical solution adopted by the utility model is: a hot melt glue gun with three gears of power, comprising a glue gun body, a trigger and a gear switch are arranged on the glue gun body, the trigger is used to control whether the circuit in the glue gun body is energized, and the gear switch is used to adjust the power of the glue gun body, characterized in that the circuit comprises a trunk, and a first branch and a second branch connected in parallel to the trunk, a first heating element is arranged on the first branch, and a second heating element is arranged on the second branch, under the same voltage, the heating power of the first heating element is less than the heating power of the second heating element, the gear switch is installed on the trunk, one end of the first branch and the second branch are both electrically connected to the gear switch, and the gear switch has a low gear, a middle gear and a high gear;

[0006] In the low gear position, the first branch is energized and the second branch is not energized;

[0007] In the middle gear, the second branch is energized, and the first branch is not energized;

[0008] In the high gear position, both the first branch and the second branch are energized.

[0009] Several optional methods are also provided below, but they are not intended to be additional limitations on the above-mentioned overall solution, but are merely further supplements or preferences. Under the premise that there are no technical or logical contradictions, each optional method can be combined with the above-mentioned overall solution separately, and multiple optional methods can also be combined.

[0010] Preferably, a first connection and a second connection are provided between the main circuit and the gear switch;

[0011] In the low gear position, the first wiring is connected to the first branch, and the first wiring is not connected to the second branch;

[0012] In the middle gear position, the first wiring is connected to the second branch, and the first wiring is not connected to the first branch;

[0013] In the high gear position, the second wiring is connected to the first branch, and the second wiring is connected to the second branch.

[0014] Preferably, the power supply voltage of the circuit is 100-240V.

[0015] Preferably, the gear switch is mounted on the handle of the glue gun body.

[0016] Preferably, the gear switch is a sliding switch.

[0017] More preferably, the heating power of the first heating element is 60W, and the heating power of the second heating element is 100W.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The utility model connects two mutually parallel first branches and second branches to the main road, and makes the first branch and the second branch electrically connected to the contacts of the gear switch respectively. When the dial block on the gear switch is turned, the first branch can be powered on separately, the second branch can be powered on separately, and the first branch and the second branch can be powered on together respectively, so as to correspond to the three-gear switch respectively. The user does not need to purchase additional hot melt glue guns. With one hot melt glue gun, the needs of glue spraying under more working conditions can be met. In the high gear, the startup preheating time can be effectively shortened. When spraying glue with large or small flow rates, stable output of hot melt glue can be achieved, and the utility model is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0021] Figure 1 This is a circuit diagram of a gear switch in a low gear position in an embodiment of the present application;

[0022] Figure 2 This is a circuit diagram of a gear switch in a middle gear position in an embodiment of the present application;

[0023] Figure 3 This is a circuit diagram of a gear switch in a high gear position in an embodiment of the present application;

[0024] Figure 4 This is an overall structural diagram of the hot melt glue gun involved in one embodiment of the present application.

[0025] Markings in the attached drawings are: 1-glue gun body, 2-gear switch, 21-low gear, 22-middle gear, 23-high gear, 24-first wiring, 25-second wiring, 3-main road, 4-first branch road, 5-second branch road, 6-first heating element, 7-second heating element.

[0026] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0030] Specific implementation plan: see Figure 1-Figure 4 The utility model is a hot melt glue gun with three power levels, including a glue gun body 1, a trigger and a gear switch 2 are arranged on the glue gun body 1, the trigger is used to control whether the circuit in the glue gun body is powered on, the gear switch 2 is used to adjust the power of the glue gun body 1, the circuit includes a trunk, and a first branch 4 and a second branch 5 connected in parallel to the trunk, a first heating element 6 is arranged on the first branch 4, and a second heating element 7 is arranged on the second branch 5, under the same voltage, the heating power of the first heating element 6 is less than the heating power of the second heating element 7, the gear switch 2 is installed on the trunk, one end of the first branch 4 and the second branch 5 are both electrically connected to the gear switch 2, and the gear switch 2 has a low gear 21, a middle gear 22 and a high gear 23;

[0031] In the low gear position 21, the first branch 4 is energized, and the second branch 5 is not energized;

[0032] In the middle gear position 22, the second branch 5 is energized, and the first branch 4 is not energized;

[0033] In the high gear position 23 , both the first branch 4 and the second branch 5 are energized.

[0034] As a preferred implementation of this embodiment, a first connection 24 and a second connection 25 are provided between the trunk and the shift switch 2;

[0035] In the low gear position 21, the first connection 24 is connected to the first branch 4, and the first connection 24 is not connected to the second branch 5;

[0036] In the middle gear position 22, the first connecting line 24 is connected to the second branch 5, and the first connecting line 24 is not connected to the first branch 4;

[0037] In the high gear position 23 , the second connecting line 25 is connected to the first branch 4 , and the second connecting line 25 is connected to the second branch 5 .

[0038] See also Figure 1It can be seen that in this embodiment, after the trigger is pressed and the power is turned on, the shift block on the gear switch 2 is moved to the low gear 21. At this time, the first wiring 24 is connected to the first branch 4, and the first branch 4 is energized. The first wiring 24 is not connected to the second branch 5, and the second branch 5 is not energized. At this time, the hot melt glue gun has the minimum power, and the actual power is only the power of the first heating element 6 (PTC1).

[0039] See also Figure 2 It can be seen that in this embodiment, after the trigger is pressed and the power is turned on, the shift block on the gear switch 2 is moved to the middle gear 22. At this time, the first wiring 24 is connected to the second branch 5, and the second branch 5 is energized. The first wiring 24 is not connected to the first branch 4, and the first branch 4 is not energized. At this time, the hot melt glue gun has a medium power, and the actual power is the power of the second heating element 7 (PTC2).

[0040] See also Figure 3 It can be seen that in this embodiment, after the trigger is pressed and the power is turned on, the shift block on the gear switch 2 is moved to the high gear 23. At this time, the second wiring 25 is connected to the first branch 4, and the first branch 4 is energized. The second wiring 25 is connected to the second branch 5, and the second branch 5 is energized. At this time, the hot melt glue gun has the maximum power, and the actual power is the sum of the powers of the first heating element 6 (PTC1) and the second heating element 7 (PTC2).

[0041] Then, in this embodiment, the power supply voltage of the circuit is 100-240V and the circuit frequency is 50hz.

[0042] Next, see Figure 3 It can be seen that in this embodiment, the gear switch 2 is installed on the handle of the glue gun body 1. In addition, the gear switch 2 is a sliding switch. The position of the gear switch 2 is corresponding to the position of the hot melt glue gun. The low, medium and high marks are designed along the sliding direction of the shift block on the gear switch, so that the user can adjust to the required gear conveniently.

[0043] More specifically, in this embodiment, the heating power of the first heating element 6 is 60w, and the heating power of the second heating element 7 is 100w. Therefore, in the low gear 21, the heating power of the hot melt glue gun is 60w, in the middle gear 22, the heating power of the hot melt glue gun is 100w, and in the high gear 23, the heating power of the hot melt glue gun is 160w (100w+60w=160w).

[0044] Of course, the power corresponding to the low gear 21, the middle gear 22 and the high gear 23 can be adjusted according to actual needs, and the principle is the same as the above content.

[0045] The hot melt glue gun with three-speed power of the utility model described above is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the inventive concept of the utility model, or direct / indirect application in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A hot melt glue gun with three power levels, comprising a glue gun body, the glue gun body being provided with a trigger and a gear switch, the trigger being used to control whether a circuit in the glue gun body is energized, the gear switch being used to adjust the power of the glue gun body, characterized in that: The circuit includes a main circuit, and a first branch circuit and a second branch circuit connected in parallel to the main circuit, the first branch circuit is provided with a first heating element, the second branch circuit is provided with a second heating element, and under the same voltage, the heating power of the first heating element is less than the heating power of the second heating element, the gear switch is installed on the main circuit, one end of the first branch circuit and one end of the second branch circuit are both electrically connected to the gear switch, and the gear switch has a low gear position, a middle gear position and a high gear position; In the low gear position, the first branch is energized, and the second branch is not energized; In the middle gear, the second branch is energized, and the first branch is not energized; In the high gear position, both the first branch and the second branch are energized.

2. A hot melt glue gun with three power levels according to claim 1, characterized in that: A first wiring and a second wiring are provided between the main circuit and the gear switch; In the low gear position, the first wiring is connected to the first branch, and the first wiring is not connected to the second branch; In the middle gear position, the first wiring is connected to the second branch, and the first wiring is not connected to the first branch; In the high gear position, the second wiring is connected to the first branch, and the second wiring is connected to the second branch.

3. A hot melt glue gun with three power levels according to claim 2, characterized in that: The power supply voltage of the circuit is 100-240V.

4. A hot melt glue gun with three power levels according to claim 3, characterized in that: The gear switch is mounted on the handle of the glue gun body.

5. A hot melt glue gun with three power levels according to claim 4, characterized in that: The gear switch is a sliding switch.

6. A hot melt glue gun with three power levels according to any one of claims 1 to 5, characterized in that: The heating power of the first heating element is 60W, and the heating power of the second heating element is 100W.

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