Electric welding pen

Abstract

The utility model discloses an electric welding pen, which relates to the technical field of welding and comprises a welding pen shell, a PCB (Printed Circuit Board), a control assembly and a pen core, one end of the welding pen shell is used for being penetrated by a wire rod; the PCB is arranged in the welding pen shell and can be conducted with the wire rod; the control assembly is arranged on the welding pen shell and used for controlling on-off of the PCB and the wire. The pen core penetrates through the other opening of the welding pen shell, is detachably connected with the PCB in a clamped mode, and can be electrically connected with the PCB in the clamped mode. The problem that the welding tip of the electric welding pen is not easy to replace is solved.

Description

Technical Field

[0001] The present application relates to the technical field of welding technology, and in particular to an electric welding pen. Background Art

[0002] A soldering pen, also known as an electric soldering iron, is a handheld soldering tool that uses electricity as an energy source. It is mainly used in the electronics industry and the field of fine metal processing to solder or repair tiny metal parts such as circuit boards and electronic components. The working principle of a soldering pen is to convert electrical energy into thermal energy through a built-in electric heating element, so that the tip of the soldering pen heats up to a temperature sufficient to melt the solder. When in use, the solder wire is placed on the metal part to be soldered, and then the tip of the soldering pen is used to heat the solder, causing it to melt and flow to the joint of the metal parts, and a stable electrical connection is formed after the solder cools down.

[0003] After using for a period of time, the welding tip of the welding pen will affect the welding effect due to oxidation, wear or damage. At this time, the refill of the welding pen needs to be replaced. Conventional spot welding pens use two bolts threaded on the welding pen sleeve to hold the refill tightly, thereby fixing the position of the refill. When disassembling, the two bolts need to be loosened to remove the refill. If there is no suitable screwdriver on site, the refill cannot be replaced, affecting the work. Utility Model Content

[0004] In order to enable the core of a welding pen to be replaced without using a screwdriver, the present application provides an welding pen.

[0005] The present application provides a welding pen, which adopts the following technical solution:

[0006] An electric welding pencil, comprising:

[0007] The soldering pen shell has openings at both ends, and one end is used to insert the wire;

[0008] The PCB board is arranged in the soldering pen housing and can be connected to the wire;

[0009] A control component is arranged on the soldering pen housing and is used to control the on and off of the PCB board and the wire;

[0010] The pen core is inserted into the soldering pen housing from another opening and is detachably connected to the PCB board and can be electrically connected to the PCB board when connected.

[0011] By adopting the above technical solution, both ends of the soldering pen shell are opened, which is convenient for the wires to pass through and connect to the PCB board. A control component is arranged on the soldering pen shell to facilitate the connection and disconnection of the PCB board and the wires. The PCB board is connected through the wires. When the pen core is connected to the PCB board, the pen core can be electrically connected to the PCB board to perform welding work, thereby improving the problem that the soldering tip of the soldering pen is difficult to replace.

[0012] Optionally, a clamping groove is opened at one end of the PBC board, a clamping ring sleeve is arranged in the clamping groove, one end of the pen core passes through the clamping ring sleeve, and the outer wall and the inner wall of the clamping ring sleeve are interference fit.

[0013] By adopting the above technical solution, a clamping groove is opened on the PCB board, and the clamping ring sleeve is clamped in the clamping groove. The pen core can pass through the clamping ring sleeve and have an interference fit with the inner wall of the clamp sleeve, so that the pen core is stably fixed during operation, thereby realizing a detachable clamping connection with the PCB board.

[0014] Optionally, the length direction of the clamping groove is parallel to the length direction of the pen core, and a plurality of clamping ring sleeves are arranged in the clamping groove at intervals along the length direction, and the inner walls of the plurality of clamping ring sleeves are simultaneously interference fit with the outer wall of the pen core.

[0015] By adopting the above technical solution, a plurality of clamping ring sleeves are provided, and the clamping ring sleeves are interference fit with the pen core, so that the pen core is better clamped in the clamping ring sleeves, making the pen core more stable.

[0016] Optionally, the control component includes a button cap connected to the soldering pen housing, a plurality of buttons are arranged in the button cap, and an electronic button module electrically connected to the wires and the PCB board is also arranged in the soldering pen housing, and the buttons are used to control the electronic button module to indirectly control the operation of the PCB board.

[0017] By adopting the above technical solution, a key cap is connected to the welding pen housing, and the keys on the key cap can control the electronic button module located in the welding housing. After the electronic button module is operated, it is convenient to control the operation of the PCB board.

[0018] Optionally, a button support seat is further provided in the soldering pen shell, the outer wall of the button support seat is fitted with the inner wall of the soldering pen shell and the electronic case module, and the button support seat is provided with a through hole for facilitating the passage of wires.

[0019] By adopting the above technical solution, a button support seat is also provided on the side of the electronic button module away from the button cap, so that when the button cap operates the electronic button module, it will not sink into the welding pen, thereby facilitating the continuous use of the welding pen. At the same time, the button support seat fits with the inner wall of the upper module shell so that the button support seat can be fixed inside the upper module shell, and a perforation is opened on the button support seat to facilitate the placement of the wire inside the welding pen.

[0020] Optionally, the soldering pen housing includes an upper module housing and a lower module housing that are detachably connected and coaxially arranged, the control component and the PCB board are arranged in the upper module housing, and one end of the pen core passes through an opening of the lower module housing away from the upper module housing.

[0021] By adopting the above technical solution, the outer shell of the welding pen can be detachably connected, which is convenient for operators to check the inside of the welding pen and convenient for repairing the welding pen.

[0022] Optionally, one end of the upper module housing away from the lower module housing can be detachably connected to a wire protection cover through which the power supply wire is passed.

[0023] By adopting the above technical solution, the provision of a wire protection cover can prevent the wire connected to the welding pen from being easily bent and damaged during daily use, which is beneficial to increasing the service life of the welding pen.

[0024] Optionally, the upper mold assembly housing includes a first mounting portion at one end and a second mounting portion at the other end, the first mounting portion and the lower mold assembly housing are threadedly connected, and the second mounting portion and the wire protection cover are detachably snap-connected.

[0025] By adopting the above technical solution, the upper membrane group shell and the lower mold group shell are threadedly connected through the first mounting part, and the second mounting part and the wire protection cover are detachably snap-connected, so that the various structures of the welding pen are tightly connected and easy to disassemble and repair.

[0026] Optionally, a decorative ring is disposed on the outer sleeve of the first mounting portion, and the decorative ring is clamped by end faces of the upper mold assembly shell and the lower mold assembly shell.

[0027] By adopting the above technical solution, the setting of the decorative ring not only has a decorative effect but also plays a buffering role for the connection between the upper module shell and the lower module shell, so that the upper module shell and the lower module shell are connected more tightly.

[0028] Optionally, the welding pen adopts a seven-core interface. The PCB board identifies the resistance and power of different refills through the host, and is compatible with four types of refills: 30W, 80W, 150W, and 250W.

[0029] By adopting the above technical solution, a current generating circuit is used in the PCB board to pass a current of a certain size through the heating wire. The current will produce different degrees of potential difference on the heating wires with different resistance values. After the potential difference is amplified by the signal conditioning circuit, the resistance value can be obtained through ADC processing of the MCU, thereby determining the type of welding pen, and then being compatible with different types of refills, so that the operator can easily replace and use different types of refills in time when they are needed, thereby improving work efficiency and the versatility of the welding pen.

[0030] In summary, the present application includes at least one of the following beneficial effects:

[0031] 1. Both ends of the soldering pen housing are open, which is convenient for the wires to pass through and connect to the PCB board. A control component is set on the soldering pen housing to facilitate the connection and disconnection of the PCB board and the wires. The PCB board is connected through the wires. When the pen core is connected to the PCB board, the pen core can be electrically connected to the PCB board to perform welding work;

[0032] 2. The welding pen housing can be detachably connected, which is convenient for operators to check the inside of the welding pen and to repair the welding pen;

[0033] 3. The setting of the decorative ring not only has a decorative effect but also serves as a buffer for the connection between the upper module shell and the lower module shell, so that the upper module shell and the lower module shell are connected more tightly. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of an electric welding pen according to an embodiment of the present application;

[0035] Figure 2 It is a partial cross-sectional schematic diagram showing the internal structure of a welding pen according to an embodiment of the present application;

[0036] Figure 3 It is a partial exploded schematic diagram showing the upper module housing and its internal structure in an embodiment of the present application;

[0037] Figure 4 is a structural schematic diagram showing the position of the button in the key cap according to an embodiment of the present application;

[0038] Figure 5 yes Figure 2 A magnified schematic diagram of part A;

[0039] Figure 6 It is an exploded schematic diagram showing the lower module housing and its internal structure according to an embodiment of the present application.

[0040] Explanation of the accompanying drawings: 1. Soldering pen housing; 11. Upper module housing; 111. Front housing; 112. Rear housing; 113. First mounting portion; 114. Second mounting portion; 12. Lower module housing; 2. Decorative ring; 3. Mounting slot; 31. Key cap; 311. Temperature increase control button; 312. Temperature decrease control button; 313. Quick selection button; 32. Electronic button module; 33. Key support seat; 331. Perforation; 4. Wire protection cover; 5. Decorative slot; 51. Decorative part; 6. Anti-slip cover; 7. PCB board; 71. Snap-in slot; 72. Gyroscope module; 8. Snap-in ring sleeve; 9. Pen core; 91. Wire. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1-6 This application is described in further detail.

[0042] The present application discloses a welding pen, referring to Figure 1 and Figure 2 , an electric welding pen, comprising a welding pen shell 1, the welding pen shell 1 is composed of an upper mold shell 11 and a lower mold shell 12 with openings at both ends, the upper mold shell 11 comprises a first mounting portion 113 at one end, the outer side wall of the first mounting portion 113 is provided with an external thread, and a threaded hole is provided at one end of the lower mold shell 12, the first mounting portion 113 is threadedly connected with the threaded hole, which is convenient for disassembly and maintenance of the electric welding pen, and a decorative ring 2 is also sleeved on the first mounting portion 113, the material of the decorative ring 2 is elastic and is pressed tightly by the end faces of the upper mold shell 11 and the lower mold shell 12. In the embodiment of the present application, the material of the decorative ring 2 is rubber, and the setting of the decorative ring 2 plays a buffering role for the connection between the upper mold shell 11 and the lower mold shell 12 while having a decorative effect; the upper mold shell 11 is divided into a front shell 111 and a rear shell 112, in the embodiment of the present application, the front shell 111 and the rear shell 112 are connected by a snap-fit ​​form, and in another embodiment, the front shell 111 and the rear shell 112 can also be connected by a screw connection.

[0043] refer to Figure 2 and Figure 3 A mounting groove 3 is provided on the upper module housing 11, and a button cap 31 is installed in the mounting groove 3. One end of the button cap 31 is exposed outside the upper module housing 11. An electronic button module 32 is clamped in the upper module housing 11. A plurality of buttons are movably connected in the button cap 31. The buttons are in contact with the electronic button module 32 clamped in the upper module housing 11. A wire 91 is passed through one end of the upper module housing 11. The wire 91 is inserted into the upper module housing 11 and is electrically connected to the electronic button module 32, so that the electronic button module 32 after power-on can be controlled by pressing the button cap 31. A button support seat 33 is attached to the side of the electronic button module 32 away from the button cap 31. The button support seat 33 is attached to the inner wall of the upper module housing 11, so that the button support seat 33 can be fixed inside the upper module housing 11. At the same time, a through hole 331 is provided in the button support seat 33 to facilitate the placement of the wire 91 in the soldering pen housing 1.

[0044] refer to Figure 4 A temperature increase control button 311, a temperature decrease control button 312 and a quick selection button 313 are arranged in the button cap 31. The temperature increase control button 311 and the temperature decrease control button 312 are used to control the temperature increase and decrease of the soldering pen. The quick selection button 313 is used for the operator to quickly and conveniently select the required temperature without having to select a preset temperature on the soldering station host end, thereby improving the convenience of operation. The quick selection button 313 can also be defined according to the function of the soldering station host software, and the operator can change the button definition function by himself, thereby improving the convenience of the operator to use the self-instruction. Specifically, a circuit with a corresponding functional module is arranged on the electronic button module, and the specific implementation method is conventional technical means, which will not be repeated here.

[0045] refer to Figure 2 and Figure 3 The end of the upper mold shell 11 away from the lower mold shell 12 is threadedly connected to the wire protection sleeve 4. The end of the upper mold shell 11 away from the lower mold shell 12 is provided with a second mounting portion 114. The second mounting portion 114 can be snapped into the wire protection sleeve 4 to complete the snap-fitting and fixing with the wire protection sleeve 4. The wire protection sleeve 4 reduces the damage to the wire 91 itself caused by the bending of the wire 91 when the electric welding pen is used. In order to make the electric welding pen more recognizable, a decorative groove 5 is also opened on the upper mold shell 11, and a decorative part 51 is installed in the decorative groove 5.

[0046] refer to Figure 5 and Figure 6 A non-slip sleeve 6 is sleeved on the outer wall of the lower module shell 12 to facilitate the operator to stably operate the welding pen when using the welding pen. A PCB board 7 is placed in the shell. One end of the PCB board 7 is electrically connected to the electronic button module 32, and the other end is connected to the refill 9. The electric energy transmitted by the wire 91 is gradually transmitted to the refill 9, so that the tip of the refill 9 is heated. The electronic button module 32 can control the PCB board 7 through key control, thereby controlling whether the refill 9 is heated and adjusting the heating power. The specific implementation method is conventional technical means, which will not be elaborated in this application.

[0047] A snap-in groove 71 is provided at one end of the PCB board 7, and a plurality of snap-in ring sleeves 8 are snap-in on the snap-in groove 71. In the implementation of the present application, there are three snap-in ring sleeves 8; one end of the pen core 9 can be snap-into the three snap-in ring sleeves 8 at the same time to complete the fixation. The end of the pen core 9 inserted into the snap-in ring sleeve 8 gradually shrinks along the insertion direction, so the width of the snap-in groove 71 also gradually shrinks along the insertion direction. Correspondingly, along the insertion direction of the pen core 9, the diameters of the three snap-in ring sleeves 8 also gradually shrink to facilitate the pen core 9 to be better snap-into the snap-in groove 71, and one end of the pen core 9 is electrically connected to the PCB board 7, so that the electric energy received by the PCB can be transmitted to the pen core 9. A gyroscope module 72 is also installed on the PCB board 7. In the embodiment of the present application, the gyroscope module 72 is a BMI160 six-axis attitude sensor.

[0048] The present application discloses a welding pen using a 7-core interface, which has two more lines than the handle line of a traditional welding pen, thereby increasing the circuit working interaction capability. The PCB board 7 identifies the resistance and power of different refills 9 through the host, and is compatible with four types of refills 9, namely 30W, 80W, 150W, and 250W. A current generating circuit is used in the PCB board 7 to pass a current of a certain magnitude through the heating wire, and the current will generate different degrees of potential difference on the heating wires with different resistance values. After the potential difference is amplified by the signal conditioning circuit, the resistance value can be obtained through ADC processing of the MCU, thereby determining the welding pen type, and then being compatible with different types of refills 9, so that the operator can replace and use different types of refills 9 in a timely manner when they are needed, thereby improving the work efficiency and the versatility of the welding pen.

[0049] The implementation principle of an electric welding pen in the embodiment of the present application is as follows: when the electric welding pen is used, firstly, a suitable refill 9 is selected according to the welding conditions, and then the selected refill 9 is inserted into the clamping ring sleeve 8 to stably fix the refill 9. After the fixation is completed, the power is turned on, and the operator can hold the anti-slip sleeve 6 arranged on the lower module shell 12, and operate the electronic button module 32 by pressing the button cap 31 to control the operation and stop of the electric welding pen, thereby completing the welding work. Under the protection of the wire protection sleeve 4, the wire 91 can also be well protected when the operator moves the electric welding pen; when the electric welding pen is damaged and needs to be inspected and maintained, the upper module shell 11 and the lower module shell 12 can be separated by relatively rotating the upper module shell 11 and the lower module shell 12 to check their internal structures, or the front shell 111 and the rear shell 112 of the upper module shell 11 can be separated by loosening the fixing screws in the upper module shell 11, and the internal structure of the upper module shell 11 can be further inspected.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A welding pen, characterized in that ,include: A soldering pen housing (1), wherein both ends of the soldering pen housing (1) are open, and a wire (91) for power supply is passed through one end; A PCB board (7), the PCB board (7) being arranged in the soldering pen housing (1) and capable of being electrically connected to the wire (91); A control component, the control component being arranged on the soldering pen housing (1) and being used for controlling the on and off of the PCB board (7) and the wire (91); The pen core (9) is inserted into the opening of the soldering pen housing (1) away from the wire material, and is detachably connected to the PCB board (7), and can be electrically connected to the PCB board (7) when connected.

2. A welding pen according to claim 1, characterized in that: A clamping groove (71) is provided at one end of the PCB board (7), a clamping ring sleeve (8) is arranged in the clamping groove (71), one end of the pen core (9) passes through the clamping ring sleeve (8), and the outer wall and the inner wall of the clamping ring sleeve (8) are interference fit.

3. A welding pen according to claim 2, characterized in that: The length direction of the clamping groove (71) is parallel to the length direction of the pen core (9), and a plurality of clamping ring sleeves (8) are arranged at intervals in the clamping groove (71) along the length direction, and the inner walls of the plurality of clamping ring sleeves (8) are simultaneously interference-fitted with the outer wall of the pen core (9).

4. The welding pen according to claim 1, characterized in that: The control component comprises a key cap (31) connected to the soldering pen housing (1), a plurality of keys being arranged in the key cap (31), and an electronic button module (32) being electrically connected to the wire (91) and the PCB board (7) being arranged in the soldering pen housing (1), the keys being used to control the electronic button module (32) so as to indirectly control the operation of the PCB board (7).

5. A welding pen according to claim 4, characterized in that: A button support seat (33) is also provided in the soldering pen housing (1); the outer wall of the button support seat (33) is in contact with the inner wall of the soldering pen housing (1) and the electronic button module (32); and the button support seat (33) is provided with a through hole (331) for the wire (91) to pass through.

6. The welding pen according to claim 1, characterized in that: The soldering pen housing (1) comprises an upper module housing (11) and a lower module housing (12) which are detachably connected and coaxially arranged, the control component and the PCB board (7) are arranged on the upper module housing (11), and one end of the pen core (9) passes through an opening of the lower module housing (12) away from the upper module housing (11).

7. The welding pen according to claim 6, characterized in that: One end of the upper mold housing (11) away from the lower mold housing (12) is detachably connected to a wire protection sleeve (4) for the wire (91) to pass through.

8. The welding pen according to claim 7, characterized in that: The upper mold assembly housing (11) comprises a first mounting portion (113) at one end and a second mounting portion (114) at the other end; the first mounting portion (113) and the lower mold assembly housing (12) are threadedly connected; and the second mounting portion (114) and the wire protection sleeve (4) are detachably snap-connected.

9. The welding pen according to claim 8, characterized in that: The outer cover of the first mounting portion (113) is provided with a decorative ring (2), and the decorative ring (2) is clamped by the end faces of the upper mold assembly shell (11) and the lower mold assembly shell (12).

10. The welding pen according to claim 1, characterized in that: The welding pen adopts a seven-core interface, and the PCB board (7) can identify the resistance and power of different pen cores (9) through the host, and is compatible with four types of pen cores (9): 30W, 80W, 150W, and 250W.

Images