CN222220140U - Hot melt glue gun and its control device - Google Patents
Hot melt glue gun and its control device Download PDFInfo
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- CN222220140U CN222220140U CN202420920539.8U CN202420920539U CN222220140U CN 222220140 U CN222220140 U CN 222220140U CN 202420920539 U CN202420920539 U CN 202420920539U CN 222220140 U CN222220140 U CN 222220140U
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Abstract
本实用新型提供一种热熔胶枪及其控制装置。热熔胶枪具有握持部、用于加热热熔胶的加热模块，其特征在于：所述控制装置包括电控开关模块、用于检测握持部是否被握持的检测单元；所述检测单元用于在握持部被握持/未被握持时输出第一电平/第二电平；所述第一电平、第二电平分别对应为高电平、低电平；所述电控开关模块的控制端与检测单元的输出端电连接，所述电控开关模块的第一常开触点电连接于加热模块的供电端、第一供电电源输出端之间。
The utility model provides a hot melt glue gun and a control device thereof. The hot melt glue gun has a gripping portion and a heating module for heating the hot melt glue, and is characterized in that: the control device comprises an electric control switch module and a detection unit for detecting whether the gripping portion is gripped; the detection unit is used to output a first level/a second level when the gripping portion is gripped/not gripped; the first level and the second level correspond to a high level and a low level respectively; the control end of the electric control switch module is electrically connected to the output end of the detection unit, and the first normally open contact of the electric control switch module is electrically connected between the power supply end of the heating module and the output end of the first power supply.
Description
Technical Field
The utility model relates to a hot melt adhesive gun and a control device thereof.
Background
The existing hot melt adhesive gun utilizes the heating and melting of the hot melt adhesive rod, so that the adhesion between objects is realized by coating glue. After the heating module (such as PTC heater or heating wire) of the hot melt adhesive gun is electrified, the adhesive rod placed in the heating cavity of the nozzle can be heated, so that the adhesive rod is melted. The subsequent hot melt adhesive can be pushed to move forwards into the heating cavity by pulling the trigger, and the melted hot melt adhesive positioned at the front position flows out of the gun nozzle, so that the hot melt adhesive is smeared on an adhered object.
Because the hot melt adhesive gun is convenient to use, the hot melt adhesive gun is widely used in the scientific and technological innovation activities of schools. However, in practice, students often forget to turn off the power supply after using the hot melt adhesive gun, resulting in the heating module heating the adhesive stick all the time. Especially when the hot melt adhesive gun is not placed on a shelf but placed on a table, not only is the position near the nozzle higher, but also the hot melt adhesive at the outlet of the nozzle may flow out, causing a potential safety hazard.
Disclosure of utility model
The utility model aims to solve the problem that the heating module is always heated to cause potential safety hazard because a power supply is not turned off after the hot melt adhesive gun is used, and provides the hot melt adhesive gun and a control device thereof.
The utility model provides a control device of a hot melt adhesive gun, which is provided with a holding part and a heating module for heating the hot melt adhesive, and is characterized by comprising an electric control switch module and a detection unit for detecting whether the holding part is held or not;
The detection unit is used for outputting a first level/second level when the holding part is held or not held, wherein the first level and the second level are respectively corresponding to a high level and a low level;
The control end of the electric control switch module is electrically connected with the output end of the detection unit, and the first normally open contact of the electric control switch module is electrically connected between the power supply end of the heating module and the output end of the first power supply.
According to the technical scheme, when the detection unit detects that the holding part is held, a high level can be output, so that the first normally open contact of the electric control switch module is closed, and the heating module can be electrified to work, and the hot melt adhesive gun can be used. When the detection unit detects that the holding part is not held, a low level can be output, so that the first normally open contact of the electric control switch module is disconnected, and the heating module can be powered off and cannot work, and safety risks are avoided.
In the technical scheme, the electric control switch module comprises a relay and a time relay;
The normally open contact of the time relay which is opened in a time delay way is a first normally open contact of the electric control switch module, the normally open contact of the relay is a second normally open contact of the electric control switch module, and one end of a coil of the relay is a control end of the electric control switch module;
One end of a coil of the relay is electrically connected with the output end of the detection unit, and the other end of the coil of the relay is grounded;
The normally open contact of the relay and the coil of the time relay are electrically connected in series between the output end of the second power supply and the ground.
According to the technical scheme, when the detection unit detects that the holding part is held, namely, high level is output, the coil of the relay is electrified, the normally open contact of the relay is closed, the coil of the time relay is electrified, the normally open contact of the time relay which is opened in a delayed mode is further closed, and therefore power is supplied to the heating module, and the heating module is electrified to work. When the detection unit detects that the holding part is not held, namely, low level is output, so that the coil of the relay is powered off, the normally open contact of the relay is disconnected, the coil of the time relay is powered off, the normally open contact of the time relay which is disconnected after the delay setting time, and the power supply of the heating module is disconnected, so that the heating module cannot work. The setting time of the time delay of the normally open contact of the time relay is set as the prior art content, namely the time relay belongs to the self characteristic of the time relay. The applicant has found in research that in practice the operator may use the hot melt adhesive gun several times over a period of time. Through the arrangement, when the holding part is not held, the heating module is not powered off immediately, but after waiting for the delay time, the normally open contact of the time relay, which is opened by the delay, is opened, so that the heating module is powered off. Namely, if an operator places the hot melt adhesive cavity for other operations (does not hold the hot melt adhesive gun), the heating module is not powered off immediately, if the operator holds the hot melt adhesive cavity again when the delay time is not reached, the detection unit outputs a high level, so that the coil of the relay is electrified, the normally open contact of the relay is closed, the coil of the time relay is electrified, the normally open contact of the time relay which is opened after the delay is further closed, thereby supplying power to the heating module, enabling the heating module to work continuously, and avoiding the repeated opening and closing of the power supply of the heating module in a short time. If an operator places the hot melt adhesive cavity and performs other operations for a long time (does not hold the hot melt adhesive gun), the time delay is reached, the normally open contact of the time relay which is opened by the time delay is opened, so that the heating module is powered off, and the safety problem is avoided.
In the technical proposal, the detection unit is a touch sensing module, or
The detection unit is a first temperature switch for detecting the temperature of the holding part, the temperature sensing part of the first temperature switch is arranged on the outer wall surface of the holding part, one connecting end of the first temperature switch is electrically connected with the output end of the second power supply, and the other connecting end of the first temperature switch is the output end of the detection unit.
The applicant found that the grip temperature was low when not held and that the grip temperature was significantly increased when held. According to the technical scheme, the temperature sensing part of the first temperature switch is arranged on the outer wall surface of the holding part, so that the temperature of the holding part can be detected, and whether the holding part is held or not can be detected through the detection of the temperature. When the temperature is higher, the holding part is held, the first temperature switch can be closed, and the detection unit outputs a high level because the output end of the second power supply is a high level signal. In addition, the conventional touch sensing module may be used to output the first level and the second level when the palm touches or does not touch the grip portion.
In the technical scheme, the detection unit comprises a first temperature switch for detecting the surface temperature of the holding part and a second temperature switch for detecting the ambient temperature, wherein a temperature sensing part of the first temperature switch is arranged on the outer wall surface of the holding part;
one connecting end of the first temperature switch and one connecting end of the second temperature switch are electrically connected with the output end of the second power supply;
The other connecting end of the first temperature switch and the other connecting end of the second temperature switch are respectively and electrically connected with two input ends of the exclusive-OR gate circuit, and the output end of the exclusive-OR gate circuit is the output end of the detection unit.
In the above technical scheme, the detection unit comprises a temperature measurement device for monitoring the temperature of the holding part and a main control unit;
the output end of the temperature measuring device is electrically connected with the signal input end of the main control unit, and the signal output end of the main control unit is the output end of the detection unit;
The electric control switch module is a relay, a normally open contact of the relay is a first normally open contact of the electric control switch module, one end of a coil of the relay is a control end of the electric control switch module, one end of the coil of the relay is electrically connected with an output end of the detection unit, and the other end of the coil of the relay is grounded.
According to the technical scheme, the temperature measuring device detects the temperature of the holding part and sends an output signal to the main control unit. The main control unit can output a high-level or low-level signal through the measurement result of the temperature measurement device to control whether the relay coil is electrified or not, namely when the temperature exceeds/does not exceed a threshold value, the main control unit outputs the high-level or low-level signal to enable the relay coil to be electrified/powered off. The main control unit outputs a high-level or low-level signal according to whether the measured temperature of the temperature measuring device exceeds a threshold value, which is the content of the prior art.
In the technical proposal, the temperature measuring device is a temperature switch, one end of the temperature switch is electrically connected with the output end of the second power supply, and the other end of the temperature switch is the output end of the temperature measuring device, or
The temperature measuring device is a temperature sensor.
According to the technical scheme, if the temperature measuring device is a temperature switch, the temperature switch can be turned on/off according to the fact that the measured temperature exceeds/does not exceed a temperature threshold value, so that the relay coil is powered on/off.
In the above technical scheme, the control device further comprises a timing unit electrically connected with the main control unit.
According to the technical scheme, when the control unit detects that the output signal of the temperature measuring device does not exceed the temperature threshold, the timing unit can be enabled to count time, and when the preset time is reached, the control unit can output low level to enable the coil to be powered off. The control unit starts the timing unit according to the input signal and outputs a low-level signal when the preset timing time is reached, which is the content of the prior art.
In the above technical scheme, the signal output end of the main control unit is also electrically connected with an LED display unit and/or a voice playing module.
According to the technical scheme, the LED display unit and/or the voice playing module are/is arranged, so that the reminding effect can be achieved through the display or voice playing of the LED.
In the above technical scheme, the control device further comprises a camera arranged on one side of the nozzle of the hot melt adhesive gun, the output end of the camera is connected with the input end of the display device, and the orientation of the camera is the same as the orientation of the nozzle of the hot melt adhesive gun.
The applicant found during the research that when needs stretch into the object with hot melt adhesive rifle mouth and bond inner structure, because receive and shelter from the condition that makes the operating personnel unable to see the bonding (for example bonding position is correct), through above-mentioned setting, can shoot bonding position through the camera to whether can know bonding position correctly through the demonstration of display screen, also can in time adjust when hot melt adhesive rifle mouth orientation has the deviation.
According to the same conception, the utility model also provides a hot melt adhesive gun, which comprises an adhesive gun body and further comprises any one of the control devices.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort to a person skilled in the art.
FIG. 1 is a right side view schematically showing the overall structure of a hot melt adhesive gun according to example 1 of the present utility model;
FIG. 2 is a schematic left-hand view showing the overall structure of the hot melt adhesive gun according to example 1 of the present utility model;
FIG. 3 is a schematic top view showing the overall structure of the hot melt adhesive gun according to example 1 of the present utility model;
FIG. 4 is a schematic bottom view showing the overall structure of the hot melt adhesive gun according to example 1 of the present utility model;
FIG. 5 is a schematic rear view showing the overall structure of the hot melt adhesive gun according to example 1 of the present utility model;
FIG. 6 is a schematic front view showing the overall structure of the hot melt adhesive gun according to example 1 of the present utility model;
FIG. 7 is a schematic circuit connection diagram of a control device of a hot melt adhesive gun according to embodiment 1 of the present utility model;
fig. 8 is a circuit connection schematic diagram of the coil of the first temperature switch, relay in embodiment 2 of the present utility model;
Fig. 9 is a schematic diagram of the first power supply in embodiment 2 of the present utility model connected to the heating module through the normally open contact of the relay;
Fig. 10 is a schematic diagram showing the circuit connection of the first temperature switch, the coil of the relay, the normally open contact of the relay, the coil of the time relay in embodiment 3 of the present utility model;
FIG. 11 is a schematic diagram of the connection of the first power supply to the heating module through the normally open contact of the time relay with delayed opening in embodiment 3 of the present utility model;
In the drawings, 1, a glue gun body, 11, a holding part, 12, a heating module, 13, a gun nozzle, 2, a temperature sensor, 3, a relay, 4, a camera, 5, a first power supply, 6, a display device, 7, a main control unit, 81, an LED display unit, 82, a voice playing module, 9, a timing unit, coils of LA and relay, normally open contacts of KA and relay, coils of LB and time relay, normally open contacts of KB and time relay which are opened by time delay, S1, a first temperature switch and 20, a box body.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Example 1
1-7, The utility model provides a control device of a hot melt adhesive gun, which is provided with a holding part 11 and a heating module 12 for heating the hot melt adhesive, and is characterized in that the control device comprises an electric control switch module and a detection unit for detecting whether the holding part 11 is held;
The detection unit is used for outputting a first level/a second level when the holding part 11 is held or not;
The control end of the electric control switch module is electrically connected with the output end of the detection unit, and the first normally open contact of the electric control switch module is electrically connected between the power supply end of the heating module 12 and the output end (namely VCC in fig. 8) of the first power supply 5. The first power supply 5 is used for supplying power to the heating module 12. The second power supply may be used to output a 5V voltage. The output voltages of the first power supply 5 and the second power supply 12 can be determined according to actual requirements.
The detection unit comprises a temperature measuring device for monitoring the temperature of the holding part 11 and a main control unit 7;
The output end of the temperature measuring device is electrically connected with the signal input end of the main control unit 7, and the signal output end of the main control unit 7 is the output end of the detection unit;
The electric control switch module is a relay 3, a normally open contact KA of the relay is a first normally open contact of the electric control switch module, one end of a coil LA of the relay is a control end of the electric control switch module, one end of the coil LA of the relay is electrically connected with an output end of the detection unit, and the other end of the coil LA of the relay is grounded.
The temperature measuring device is a temperature sensor 2.
The control device further comprises a timing unit 9 electrically connected with the main control unit 7.
The signal output end of the main control unit 7 is also electrically connected with an LED display unit 81 and/or a voice playing module 82.
In this embodiment, the temperature sensor 2 may be a DS18B20 temperature sensor module, the LED display unit 81 may be a four-bit nixie tube, the voltage is 5V, the driving chip may be TM1637, and the voice playing module 82 may be a YwRobot voice module.
The temperature is arranged inside the handle, and the temperature sensor is not extruded when the handle is held. The electrical connection wires of the temperature sensor can be routed inside the glue gun. The temperature sensor is arranged in the handle (for example, the distance between the temperature sensor and the outer wall of the handle is 1-5 MM), and can measure more accurate temperature without directly contacting with the palm of the human body, and the size of the temperature sensor can be 15 multiplied by 11MM. The handle may also be made of a heat transfer material such as acrylic, glass or plastic material.
The detection unit can also adopt a touch sensing module, such as a TK01Lxxxx series touch key module of special core electronics. The touch key module can be arranged inside the handle, and can not be squeezed when being held. The touch key module has a certain sensing distance, for example, the distance between the touch key module and the outer wall of the handle is 1-5mm. For example, a groove can be formed in the outer wall of the holding part, the touch key module or the temperature sensor 2 can be arranged in the groove, a shell material with the thickness of 1-5mm is further arranged on the outer side of the touch key module or the temperature sensor 2, the shell material is flush with the outer wall of the holding part, and the shell material can be made of a heat transfer material, such as acrylic, glass or plastic material.
The control device further comprises a display device 6 and a camera 4 arranged on one side of the gun nozzle 3 of the hot melt adhesive gun, wherein the output end of the camera 4 is connected with the input end of the display device 6, and the orientation of the camera 4 is the same as the orientation of the gun nozzle 3 of the hot melt adhesive gun.
The utility model also provides a hot melt adhesive gun, which comprises the adhesive gun body 1 and the control device.
In this embodiment, the high level range is 2.0-5V, and the low level range is 0-0.8V.
This embodiment is described in further detail below. A multifunctional intelligent hot melt adhesive gun comprises a gun body and a box body 20. The glue gun is externally provided with a camera and a display (not shown). The periphery and bottom wall of the case may be made of transparent material. A display device (e.g., digital display, display screen) and an LED display unit may be provided outside the case 20. Horn and relay can be set in the box. A PLC controller (i.e. a main control unit 7) is arranged in the box body. Through setting up box 20, can set up devices such as PLC controller, loudspeaker, relay in the box, and the wiring of the circuit connection of device and hot melt adhesive rifle main part in the box is also comparatively convenient. In addition, when not using the hot melt adhesive rifle, the box can play the supporting role, avoids the problem that the gun mouth is close with the desktop and brings the security risk easily when putting the hot melt adhesive rifle on the desktop in prior art. Moreover, the box body does not influence the operation of the hot melt adhesive gun.
When the temperature sensor detects that someone holds the glue gun, the temperature sensor sends a signal to the PLC, and the PLC controls the light emitting of the colorful LED lamp, the opening of the glue gun and the opening of the loudspeaker (for example, broadcasting can be set, namely, the glue gun is opened). When the temperature sensor 2 detects that no one holds the glue gun, the PLC controls the display device to display time, closes the glue gun after a certain time, and opens the loudspeaker (broadcasting that the glue gun is closed) so as to avoid continuous heating of the glue gun.
When the camera is started, the PLC controller can display the area shot by the camera on the screen in real time by controlling the display. The control of the display by the PLC controller and the real-time display of the shooting area are all the contents of the prior art.
The hot melt adhesive gun comprises a main control unit, a temperature sensor 2, a voice playing module (such as a loudspeaker), an LED display unit, a camera, a display device, a relay and a first power supply. The main control unit can adopt a PLC controller, a singlechip or a DSP. The temperature sensor 2 is used for sensing whether the holding part is held or not, and an output signal of the temperature sensor can be sent to the main control unit through the general purpose input/output port GPIO. The voice playing module (loudspeaker) can adopt the existing intelligent voice chip, can adopt the prior art to record voice into the chip through an SD card or USB, can realize the playing control LED display unit of the voice through a serial port (UART) in the prior art, and can adopt an LDE lamp, such as a colorful LED. The LED display unit is used for displaying the state, and the main control unit can control the module through the general purpose input/output port GPIO to realize the prompt of the state. The display device can be composed of a nixie tube, the main control unit can control the display device to display digitally through GPIO, and the display timing and the stop heating countdown can be performed by utilizing the prior art. The relay is used for receiving signals output by the GPIO port of the main control unit, controlling the heating module to work, and realizing power supply or power failure of the heating module.
The camera can have infrared night vision function, has WIFI or USB transmission video interface, and available prior art utilizes the control of main control unit through GPIO port to the function of taking a picture to the camera, also can control and carry out automatic focusing. In the WIFI mode, pushing of video streams can be achieved through RTSP, and an external display screen can pull and display the streams. In the USB mode, the display can be connected through the USB interface to display video.
The application uses the temperature sensor 2 to detect the holding state of the glue gun, and judges whether the glue gun is held or not by detecting the temperature change of the hand-held part, thereby realizing the opening and closing of the glue gun. The LED display unit and the loudspeaker can provide visual and audible prompts, and are convenient for a user to work in the glue gun. The scheme of the application can meet the requirements of general users and can be expanded and improved according to actual conditions. The application scheme is more comprehensive in the aspect of providing audio-visual prompts, and is suitable for a wider user group.
Example 2
As shown in fig. 8 and 9, embodiment 2 is different from embodiment 1 in that the temperature measuring device is a temperature switch S1, one end of the temperature switch S1 is electrically connected to the output end of the second power supply, and the other end of the temperature switch S1 is the output end of the temperature measuring device.
Example 3
As shown in fig. 10 and 11, the difference between embodiment 3 and embodiment 1 is that the electric control switch module includes a relay 3 and a time relay, a normally open contact KB of the time relay which is opened by time delay is a first normally open contact of the electric control switch module, a normally open contact KA of the relay is a second normally open contact of the electric control switch module, one end of a coil LA of the relay is a control end of the electric control switch module, one end of the coil LA of the relay is electrically connected with an output end of the detection unit, the other end of the coil LA of the relay is grounded, and the normally open contact KA of the relay and the coil LB of the time relay are electrically connected in series between the output end of the second power supply and the ground. The detection unit is a first temperature switch S1 for detecting the temperature of the holding portion 11, a temperature sensing portion of the first temperature switch S1 is disposed on the outer wall surface of the holding portion 11, one connection end of the first temperature switch S1 is electrically connected with the output end of the second power supply, and the other connection end of the first temperature switch S1 is the output end of the detection unit.
It should be noted that, in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described as different from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.
The foregoing describes the embodiments of the present utility model in detail, but the description is only a preferred embodiment of the present utility model and should not be construed as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to be covered by the present utility model. Modifications of the utility model which are equivalent to various embodiments of the utility model will occur to those skilled in the art upon reading the utility model, and are within the scope of the utility model as defined in the appended claims. Embodiments of the utility model and features of the embodiments may be combined with each other without conflict.
Claims (9)
1. The control device of the hot melt adhesive gun is provided with a holding part (11) and a heating module (12) for heating the hot melt adhesive, and is characterized by comprising an electric control switch module and a detection unit for detecting whether the holding part (11) is held or not;
The detection unit is used for outputting a first level/second level when the holding part (11) is held or not held, wherein the first level and the second level are respectively corresponding to a high level and a low level;
The control end of the electric control switch module is electrically connected with the output end of the detection unit, and the first normally open contact of the electric control switch module is electrically connected between the power supply end of the heating module (12) and the output end of the first power supply source (5).
2. The control device according to claim 1, wherein the electric control switch module comprises a relay (3) and a time relay;
The normally open contact (KB) of the time relay, which is opened in a time delay way, is a first normally open contact of the electric control switch module, the normally open contact (KA) of the relay is a second normally open contact of the electric control switch module, and one end of a coil (LA) of the relay is a control end of the electric control switch module;
one end of a coil (LA) of the relay is electrically connected with the output end of the detection unit, and the other end of the coil (LA) of the relay is grounded;
The normally open contact (KA) of the relay and the coil (LB) of the time relay are electrically connected in series between the output end of the second power supply and the ground.
3. The control device according to claim 1, wherein the detecting unit is a touch sensing module, or
The detection unit is a first temperature switch (S1) used for detecting the temperature of the holding part (11), a temperature sensing part of the first temperature switch (S1) is arranged on the outer wall surface of the holding part (11), one connecting end of the first temperature switch (S1) is electrically connected with the output end of the second power supply, and the other connecting end of the first temperature switch (S1) is the output end of the detection unit.
4. The control device according to claim 1, wherein the detection unit comprises a temperature measuring device for monitoring the temperature of the grip (11), a main control unit (7);
The output end of the temperature measuring device is electrically connected with the signal input end of the main control unit (7), and the signal output end of the main control unit (7) is the output end of the detection unit;
The electric control switch module is a relay (3), a normally open contact (KA) of the relay is a first normally open contact of the electric control switch module, one end of a coil (LA) of the relay is a control end of the electric control switch module, one end of the coil (LA) of the relay is electrically connected with an output end of the detection unit, and the other end of the coil (LA) of the relay is grounded.
5. The control device according to claim 4, wherein the temperature measuring device is a temperature switch (S1), one end of the temperature switch (S1) is electrically connected with the output end of the second power supply, and the other end of the temperature switch (S1) is the output end of the temperature measuring device, or
The temperature measuring device is a temperature sensor (2).
6. The control device according to claim 4, characterized in that the control device further comprises a timing unit (9) electrically connected to the main control unit (7).
7. The control device according to claim 4, wherein the signal output end of the main control unit (7) is further electrically connected with an LED display unit (81) and/or a voice playing module (82).
8. The control device according to any one of claims 1 to 7, further comprising a display device (6) and a camera (4) arranged on one side of a nozzle (13) of the hot melt adhesive gun, wherein the output end of the camera (4) is connected with the input end of the display device (6), and the orientation of the camera (4) is the same as the orientation of the nozzle (13) of the hot melt adhesive gun.
9. A hot melt adhesive gun comprising an adhesive gun body (1), characterized by further comprising a control device according to any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420920539.8U CN222220140U (en) | 2024-04-29 | 2024-04-29 | Hot melt glue gun and its control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420920539.8U CN222220140U (en) | 2024-04-29 | 2024-04-29 | Hot melt glue gun and its control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222220140U true CN222220140U (en) | 2024-12-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420920539.8U Active CN222220140U (en) | 2024-04-29 | 2024-04-29 | Hot melt glue gun and its control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222220140U (en) |
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2024
- 2024-04-29 CN CN202420920539.8U patent/CN222220140U/en active Active
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