Hot knife ironing head structure

Abstract

The technical scheme belongs to the technical field of lacing machines, and particularly relates to a hot knife ironing head structure which comprises a mounting bracket, an ironing knife head arranged on the mounting bracket and a heating plate arranged on the ironing knife head, the heating plate is connected with an electric connecting wire, a mounting groove is formed in the side wall of the ironing knife head, two opposite side walls of the mounting groove are thin-wall-shaped and form elastic parts, and the elastic parts are arranged on the mounting bracket. A heating plate is arranged in the installation groove, the width of the heating plate is matched with the groove width of the installation groove, the elastic parts on the two sides are bent close to the heating plate so that the heating plate can abut against the heating plate to be fixed, the elastic parts on the two sides tightly abut against the two sides of the heating plate through elastic deformation of the elastic parts, locking positioning is formed, and the heating plate can be installed and fixed more easily and conveniently. And therefore, the convenience of mounting the heating plate is improved.

Description

Technical Field

[0001] The present technical solution relates to the technical field of strapping machines, and particularly refers to a hot knife head structure. Background Art

[0002] A strapping machine is an automated packaging device used for bundling items to be strapped. It is equipped with a hot head, and after the hot head is heated, the two layers of strapping tapes are heat-bonded together using high temperature.

[0003] For example, in Chinese Patent CN219524350U, this patent discloses a new type of temperature-measuring hot head and strapping device, including a bracket main body. One end of the bracket main body is provided with a heating plate and a hot knife. The heating plate is a resistor, and wires are connected to both ends of the heating plate. When powered on, the current passing through the heating plate generates heat and heats the hot knife. The heating plate is arranged between the bracket main body and the hot knife, and the hot knife is fixedly connected through fastening bolts. An insulating sleeve is arranged between the fixing bolt and the hot knife, and an insulating plate is also arranged between the heating plate and the hot knife.

[0004] The above heating plate uses electric heating and transfers heat to the hot knife. Currently, the assembly of the heating plate requires cooperation with many other components and needs to follow the correct assembly process. During installation, it is restricted by the complex structure, resulting in more installation steps, a longer installation process, and more manpower input for installation, making the installation cumbersome and in need of improvement. Summary of the Invention

[0005] The present technical solution provides a hot knife head structure in order to improve the problem of cumbersome installation caused by a complex heating structure.

[0006] The purpose of the present technical solution is achieved as follows:

[0007] A hot knife head structure includes a mounting bracket, a hot knife head arranged on the mounting bracket, and a heating plate arranged on the hot knife head. The heating plate is connected with an electric connection wire. An installation groove is formed on the side wall of the hot knife head. The opposite side walls of the installation groove are in a thin-wall shape and form elastic parts. The heating plate is arranged in the installation groove, and the width of the heating plate is adapted to the groove width of the installation groove. The two elastic parts bend close to the heating plate so as to be pressed against the heating plate for fixation.

[0008] Through the above technical solution, when the hot knife head structure is in normal use, an external power supply supplies power to the heating plate through the electric connection wire, and the electric energy is input and converted into heat energy. Based on the fact that the size and shape of the heating plate are adapted to those of the installation groove in the hot knife head, the heating plate is embedded in the installation groove to transfer the heat energy to the hot knife head. The embedded setting reduces the distance of heat transfer. When the strapping tape completes the bundling of the item, the hot knife head uses high temperature to heat-bond the stacked strapping tapes together, thus completing one bundling.

[0009] The elastic parts are arranged corresponding to the opposite side walls of the installation groove and are in the shape of thin walls, and can be elastically deformed. After the heating plate abuts against the bottom of the installation groove, the elastic parts on both sides are bent towards the inside of the installation groove until they tightly abut against both sides of the heating plate to form locking and positioning, making the installation and fixation of the heating plate more convenient and improving the convenience of installing the heating plate.

[0010] Preferably, the mounting bracket is provided with a mounting cavity, both the hot knife head and the heating plate are located in the mounting cavity, the top of the hot knife head has a hot knife part, and the hot knife part can protrude from the mounting cavity.

[0011] Through the above technical solution, the mounting cavity of the mounting bracket is adapted to the hot knife head. After the hot knife head is embedded in the mounting cavity, it is fixed to the mounting bracket, so that the opposite side walls of the mounting cavity form a limit for the hot knife head, and the overall structure is more compact, improving the protection to reduce wear. The hot knife part protrudes from the mounting cavity, so that the hot knife part can contact the packing belt during hot sticking, avoiding affecting the normal work.

[0012] Preferably, the installation groove is located below the hot knife part, so that the heating plate corresponds to the hot knife part and is used to provide heat.

[0013] Through the above technical solution, the installation groove is arranged below the hot knife part to ensure the direct corresponding relationship between the heating plate and the hot knife part. This layout enables the heat generated by the heating plate to be transferred to the hot knife part more quickly and efficiently, reducing heat loss and improving the heat transfer efficiency.

[0014] Preferably, the hot knife head is provided with a connection hole, a fastener is arranged in the connection hole, and the hot knife head is fixed to the bottom of the mounting cavity through the fastener passing through the connection hole.

[0015] Through the above technical solution, the fastener adopts a bolt. The bolt is aligned with the connection hole, passes through and is connected to the bottom of the mounting cavity, so that the hot knife head is fixedly connected to the mounting bracket, ensuring that the hot knife head can be firmly fixed in the mounting cavity.

[0016] Preferably, it further includes a heat insulation plate. The heat insulation plate is located between the hot knife head and the bottom of the mounting cavity, and the heat insulation plate is provided with through holes, and the positions of the through holes correspond to the connection holes one by one.

[0017] Through the above technical solution, a heat insulation plate is installed between the hot knife head and the bottom of the mounting cavity. The heat insulation plate has a slow heating rate, thereby reducing the heat transfer from the heating sheet to the mounting bracket. The positions of the through holes and the connection holes are aligned, enabling the connecting piece to pass through the heat insulation plate to ensure normal connection.

[0018] Preferably, the heating plate includes two insulating sheets, a heating sheet, and a heat conducting block. There are two insulating sheets, and the heating sheet is arranged between the two insulating sheets. The heating sheet is connected to an electric connection wire.

[0019] Through the above technical solution, the heating plate is placed between two insulating sheets for insulation protection, improving the safety of operation. Based on the fact that the heating plate is vertically placed in the installation groove, the contact surface between the top of the heating plate and the ironing head is small. The heat conduction block is used to increase the contact surface and the heat absorption amount, realizing stable heat transfer.

[0020] Preferably, the heating plate is further provided with a thermocouple. The thermocouple and the electric connection wire are both arranged on the same side of the heating plate for monitoring the temperature.

[0021] Through the above technical solution, the thermocouple wire is connected to the same side of the power connection wire to form a thermocouple loop, so as to facilitate the conversion of the measured temperature difference into a signal and transmit the signal to the control device, controlling the heating plate to stably maintain within a certain temperature range, which is more intuitive and accurate, thereby improving the stability of the ironing belt.

[0022] Preferably, a wiring groove 1 is provided at the bottom of the installation groove, and a wiring groove 2 is provided at the corresponding position of the heat conduction block. The wiring groove 1 and the wiring groove 2 cooperate to allow the power supply connection wire to pass through.

[0023] Through the above technical solution, the openings of the wiring groove 1 and the wiring groove 2 are coplanar, and the two wiring groove openings are spliced relatively to form a space adapted to the electric connection wire and the thermocouple, so that the heat conduction block and the bottom of the installation groove press the wire tightly, reducing the swing, and improving its positioning ability and installation stability.

[0024] Preferably, the installation bracket is provided with a wire groove, and the position of the wire groove corresponds to the electric connection wire and allows the electric connection wire to pass through.

[0025] Through the above technical solution, the wire groove is inclined downward and penetrates relative to the installation bracket, and its shape and size are adapted to the electric connection wire and the thermocouple, guiding multiple wires to pass through the wire groove and integrating them, providing a clear path and positioning points, restricting random wire routing, and making the wires more stable and orderly.

[0026] Preferably, the installation bracket is provided with a butting hole, and one end of the butting hole penetrates into the wire groove, so that a fastener passes through the butting hole to press the electric connection wire against the side wall of the wire groove.

[0027] Through the above technical solution, the fastener passes through the butting hole, the fastener is tightened, the fastener presses against multiple wires, and the wires are all pressed against the side wall in the wire groove, enhancing the fixing effect on the electric connection wire and further improving the stability.

[0028] The prominent and beneficial technical effects of this technical solution compared with the prior art are:

[0029] 1. In this technical solution, the heating plate is embedded in the installation groove. The elastic parts are arranged corresponding to the opposite side walls of the installation groove and are in the shape of thin walls. By pressing and folding the elastic parts on both sides, they are deformed and bent to tightly abut against the heating plate, forming a fixed position, thus completing the installation, which improves the convenience of installing the heating plate.

[0030] 2. In this technical solution, a thermocouple is connected to the heating plate. The thermocouple measures the temperature difference and converts it into a signal, which is transmitted to the control device, so that the heating plate is maintained within a certain temperature range, more intuitively and accurately controlling the stable change and improving the stability of the ironing tape. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic diagram of the overall structure of this embodiment;

[0032] Figure 2 is a partial exploded view of this embodiment;

[0033] Figure 3 is for this embodiment Figure 1 Another partial exploded view from a different perspective;

[0034] Figure 4 is a partial structural diagram of the ironing knife head and the heating plate in the embodiment;

[0035] Figure 5 is for this embodiment Figure 4 Partial exploded view;

[0036] Figure 6 is a partial exploded view of the heating plate in the embodiment;

[0037] Figure 7 is a schematic diagram of the overall structure of the ironing knife head in the embodiment;

[0038] Figure 8 is for this embodiment Figure 4 Another usage structural diagram.

[0039] Reference numerals: 1. Installation bracket; 2. Ironing knife head; 3. Heating plate; 31. Insulating sheet; 32. Heating sheet; 33. Heat conduction block; 4. Electrical connection wire; 5. Installation groove; 6. Elastic part; 7. Installation cavity; 8. Ironing knife part; 9. Connection hole; 10. Fastener; 11. Heat insulation plate; 12. Through hole; 13. Thermocouple; 14. Wiring groove one; 15. Wiring groove two; 16. Wire groove; 17. Abutting hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] The following further details the specific implementation manners of this technical solution with reference to the drawings.

[0041] Embodiment:

[0042] See Figure 1 , a hot knife head structure, including a mounting bracket 1 and a hot knife head 2. An installation cavity 7 is opened at the upper end of the mounting bracket 1, and the corresponding opposite side walls of the mounting bracket 1 in the horizontal direction are penetrated. The hot knife head 2 is installed in the installation cavity 7.

[0043] See Figure 2 and Figure 3 , the specific installation method of the hot knife head 2 is that two connection holes 9 are vertically penetrated through the hot knife head 2, and their distribution positions are perpendicular to the penetration direction of the installation cavity 7. The connection holes 9 are preferably countersunk holes. Two fasteners 10 are provided corresponding to the two connection holes 9 one by one. The fasteners 10 are preferably bolts. The screw of the bolt passes through the corresponding connection hole 9 and is threadedly connected to the hole at the bottom of the installation cavity 7, so that the bolt head abuts against the step surface in the countersunk hole to fix the hot knife head 2.

[0044] An installation groove 5 is opened on the hot knife head 2, which is opened on one side wall of the hot knife head 2, and the notch direction is set towards the position away from the connection hole 9. It also includes a heating plate 3, which can provide heat. The width dimension of the heating plate 3 is adapted to the groove width of the installation groove 5, so that the heating plate 3 is embedded in the installation groove 5 for positioning. The hot knife head 2 has a hot knife part 8, which is arranged at the top of the hot knife head 2 and is located above the installation groove 5 correspondingly. The heat can be directly transferred to the upper hot knife part, so as to shorten the interval distance from the heating plate 3 to reduce heat loss. When the hot knife head 2 is fixedly installed, the hot knife part 8 can protrude from the upper end opening of the installation cavity 7, so that the hot knife part 8 can make normal hot connection contact.

[0045] It also includes a heat insulation plate 11, whose size is adapted to the installation cavity 7 and is placed therein, and is located between the hot knife head 2 and the bottom of the installation cavity 7. Two through holes 12 are opened on the heat insulation plate 11, and their sizes are adapted to the fasteners 10. The positions of the two through holes 12 correspond to the two connection holes 9 one by one, so that the fasteners 10 can pass through the connection holes 9 and then pass through the through holes 12 smoothly. The heat insulation plate 11 is used to weaken the heat transferred from the heating plate 3 to the mounting bracket 1.

[0046] The heating plate 3 is connected with two electric connection wires 4. Two electric connection wires 4 shown in this embodiment are respectively a positive wire and a negative wire for inputting current. They are located on one side of the heating plate 3 corresponding to the through opening of the installation groove 5 along the length direction. The heating plate 3 is also provided with a thermocouple 13. The thermocouple 13 and the electric connection wires 4 are both arranged on the same side of the heating plate 3, and are located between the two electric connection wires 4, which is used to sense the temperature and output an electric signal to the control system to realize real-time monitoring of the temperature change and control the system to adjust the temperature so that the temperature can be maintained within the stable use range.

[0047] The mounting bracket 1 is provided with a wire groove 16, and the position of the wire groove 16 corresponds to the electric connecting wire 4. One end of the wire groove 16 passes through the mounting cavity 7, and the other end passes through the mounting bracket 1 downwardly at an angle away from the mounting cavity 7, so as to allow the electric connecting wire 4 and the thermocouple 13 to pass through. The mounting bracket 1 is provided with an abutment hole 17, which passes through the wire groove 16 correspondingly, and the penetration direction is perpendicular to the penetration direction of the wire groove 1. A fastener 10 is connected to the abutment hole 17, and the fastener 10 is a bolt. When the bolt is tightened, one end of the bolt passes through the abutment hole 17 to press the electric connecting wire 4 and the thermocouple 13 against the opposite side wall of the wire groove 16, so as to position the wire to limit swinging.

[0048] See also Figure 5 and Figure 6 The heating plate 3 includes an insulating sheet 31, a heating sheet 32 ​​and a heat-conducting block 33. Two insulating sheets 31 are provided. The two insulating sheets 31 are located on opposite sides of the heating sheet 32 ​​in a one-to-one correspondence. The size of the insulating sheet 31 is larger than that of the heating sheet 32, so that it covers the two sides of the heating sheet 32 ​​to achieve insulation effect. The heating sheet 32 ​​is formed by bending an electric heating wire in a zigzag shape to form a loop and having two contacts at both ends. The two contacts are in one-to-one contact with the joints of the two electrical connecting wires 4. The heat-conducting block 33 is against the side of the insulating sheet 31 away from the bottom of the installation groove 5. When the heating sheet 32 ​​is powered on and generates heat, the heat is transferred to the heat-conducting block 33, and the heat-conducting block 33 transfers the heat to the ironing knife part 8.

[0049] A wiring groove 14 is provided at the bottom of the installation groove 5, and a wiring groove 2 15 is provided at the corresponding position of the heat conductive block 33. After the heating plate 3 is installed, the wiring groove 14 and the wiring groove 2 15 are spliced ​​to form a clearance space. When the ironing knife head 2 is installed, the clearance space is arranged in alignment with the through-opening of the wiring groove, which is adapted to the two electrical connecting wires 4 and the thermocouple 13, and is used for three wires to pass through, thereby further improving the positioning accuracy.

[0050] See also Figure 4 and Figure 8 The opposite side walls of the mounting groove 5 are thin-walled and formed with elastic parts 6. The elastic parts 6 on both sides can be elastically deformed. The heating plate 3 is fixed by bending the elastic parts 6 on both sides close to the heating plate 3 until the elastic parts 6 on both sides are pressed against the upper and lower sides of the heat conducting block 33 to form a fixed limit, thereby limiting its separation from the mounting groove 5. This fixing method is simple and efficient.

[0051] The specific working process of this program is as follows:

[0052] In this technical solution, an installation groove 5 is formed on the side wall of the ironing tool head 2, a heating plate 3 is installed in the installation groove 5, the electrical connection wires 4 of the heating plate 3 are clamped into the wiring groove one 14 and the wiring groove two 15, and pass through the wire groove 16. The fastener 10 passes through the abutting hole 17 to tightly press and position multiple wires. The elastic parts 6 are correspondingly formed on the opposite side walls of the installation groove 5. They are in a thin-wall shape and can elastically deform. After the heating plate 3 abuts against the bottom of the installation groove 5, the elastic parts 6 on both sides are bent towards the inside of the installation groove 5 until they tightly abut against the heating plate 3 to form a limit by pressing, locking the heating plate 3. The heating plate 3 transfers heat to the ironing tool part 8 for ironing and sticking the packing tape. The installation and fixation of the heating plate 3 are more convenient, improving the convenience of installing the heating plate 3.

[0053] The above has shown and described the basic principles, main features and advantages of this technical solution. Those skilled in the art should understand that this technical solution is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of this technical solution. Without departing from the spirit and scope of this technical solution, this technical solution will have various changes and improvements, and these changes and improvements all fall within the scope of this technical solution claimed. The scope of protection required by this technical solution is defined by the appended claims and their equivalents.

Claims

1. A hot knife head structure, comprising a mounting bracket (1), a hot knife head (2) disposed on the mounting bracket (1), and a heating plate (3) disposed on the hot knife head (2), the heating plate (3) being connected to an electric connection wire (4), characterized in that: The side wall of the hot knife head (2) is provided with an installation groove (5). The opposite side walls of the installation groove (5) are in the shape of thin walls and form elastic parts (6). The heating plate (3) is arranged in the installation groove (5). The width of the heating plate (3) is adapted to the groove width of the installation groove (5). The two elastic parts (6) are bent close to the heating plate (3) so as to be fixed by pressing on the heating plate (3).

2. The hot knife head structure according to claim 1, characterized in that: The installation bracket (1) is provided with an installation cavity (7). The hot knife head (2) and the heating plate (3) are both located in the installation cavity (7). The top of the hot knife head (2) has a hot knife part (8), and the hot knife part (8) can protrude from the installation cavity (7).

3. The hot knife head structure according to claim 2, wherein: The installation groove (5) is located below the hot knife part (8) so that the heating plate (3) corresponds to the hot knife part (8) and is used to provide heat.

4. The hot knife head structure according to claim 2, characterized in that: The hot knife head (2) is provided with a connection hole (9). The connection hole (9) is provided with a fastener (10). The hot knife head (2) is fixed to the bottom of the installation cavity (7) by the fastener (10) passing through the connection hole (9).

5. The hot knife head structure according to claim 4, characterized in that: It further includes a heat insulation plate (11). The heat insulation plate (11) is located between the hot knife head (2) and the bottom of the installation cavity (7). The heat insulation plate (11) is provided with through holes (12), and the positions of the through holes (12) correspond to the connection holes (9) one by one.

6. The hot knife head structure according to claim 1, characterized in that: The heating plate (3) includes an insulating sheet (31), a heating sheet (32) and a heat conduction block (33). There are two insulating sheets (31). The heating sheet (32) is arranged between the two insulating sheets (31), and the heating sheet (32) is connected to the electric connection wire (4).

7. The hot knife head structure according to claim 1, characterized in that: The heating plate (3) is further provided with a thermocouple (13). The thermocouple (13) and the electric connection wire (4) are both arranged on the same side of the heating plate (3) and are used for monitoring the temperature.

8. The hot knife head structure according to claim 6, characterized in that: The bottom of the installation groove (5) is provided with a wiring groove one (14). The corresponding position of the heat conduction block (33) is provided with a wiring groove two (15). The wiring groove one (14) and the wiring groove two (15) cooperate to supply the electric connection wire (4) to pass through.

9. The hot knife head structure according to claim 1, characterized in that: The installation bracket (1) is provided with a wire groove (16). The position of the wire groove (16) corresponds to the electric connection wire (4) and supplies the electric connection wire (4) to pass through.

10. The hot knife head structure according to claim 9, characterized in that: The installation bracket (1) is provided with an abutting hole (17). One end of the abutting hole (17) penetrates into the wire groove (16) so that the fastener (10) passes through the abutting hole (17) to press the electric connection wire (4) against the side wall of the wire groove (16).

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