Cutter structure and strip steel lap joint resistance welding machine

Abstract

The utility model discloses a cutter structure and strip steel lap joint resistance welding machine relates to cutter structure technical field, cutter structure includes upper cutting piece and lower cutting piece, the upper cutting piece includes upper blade, the lower cutting piece includes lower knife rest, lower blade and magnetic attraction piece, the lower knife rest is equipped with knife groove, the lower blade is equipped with the groove wall of knife groove, and the magnetic attraction piece is equipped with magnetic attraction piece. The magnetic attraction piece is arranged at the groove bottom of the cutter groove. When the upper blade is inserted into the cutter groove, the upper blade and the lower blade can be matched to cut strip steel, and the magnetic attraction piece can attract metal chippings generated when the strip steel is cut. The cutter structure can be used for the strip steel lap joint resistance welding machine, when the strip steel lap joint resistance welding machine cuts strip steel, the upper blade can be driven to move towards the cutter groove so that the upper blade can be inserted into the cutter groove, and the upper blade is matched with the lower blade to cut the strip steel. Metal chips generated in the strip steel cutting process can be attracted by the magnetic attraction piece at the bottom of the cutter groove so as to be prevented from being attached to the upper blade and the lower blade, and the upper blade and the lower blade can be prevented from being damaged when the strip steel is cut next time.

Description

Technical Field

[0001] The utility model relates to the technical field of tool structures, in particular to a tool structure and a strip steel overlap resistance welding machine. Background Art

[0002] The strip lap resistance welding machine is mainly used in the continuous post-processing production line of the steel plate and strip industry, such as coating and plating lines, continuous annealing lines, inspection lines, etc. Its welding principle is to first cut the strip head and strip tail through the double-edged shear device, and then the inlet and outlet clamps overlap the strip head and strip tail together to form an overlap resistance; the large current output by the transformer is transmitted to the upper and lower welding wheels of the welding wheel assembly through the bus. Finally, the upper and lower welding wheels of the welding wheel assembly roll regularly on the overlap of the strip under the pressure of the cylinder or hydraulic cylinder. Due to the resistance of the overlapping parent material, it heats up and melts under the action of the current and adheres together, thereby completing the continuous welding process and welding the strip head and strip tail into one, meeting the needs of continuous production of the unit.

[0003] The prior art with the announcement number CN116352254A discloses a strip steel splicing device for a continuous production line, including a frame, a clamping assembly and a welding assembly. The clamping assembly includes two clamps mounted on the frame and arranged opposite to each other. The two clamps can move toward or away from each other. The two clamps can stay at any position on their moving tracks, and the clamps have a first state of allowing the strip steel to pass through the clamps, and a second state of clamping the strip steel. The welding assembly includes a slide, a slide driving member, a welding member and a cutting member. The slide is located between the two clamps. The cutting member is mounted on the slide to cut the end of the strip steel. The welding member is mounted on the slide to weld the joint of two sections of the strip steel. The slide driving member drives the slide to move in a direction perpendicular to the connecting line of the two clamps, so that the welding member and the cutting member reach the location of the strip steel respectively.

[0004] However, this prior art still has defects. For example, the transmission of electric current through the bus will form a magnetic field near the bus. The double-edged scissors blades near the bus are easily magnetized. The waste generated by the subsequent shearing of the head and tail of the tape by the double-edged shears is adsorbed on the blades. When the double-edged shears cut the head and tail of the tape again, the waste will cause serious wear to the blades. Utility Model Content

[0005] The purpose of the utility model is to overcome the above-mentioned technical deficiencies and propose a tool structure and a strip lap resistance welding machine to solve the technical problem in the prior art that the transmission of current through the bus will form a magnetic field near the bus, the double-edged scissors blades near the bus are easily magnetized, and the waste formed by the double-edged scissors in the subsequent shearing of the strip head and the strip tail is adsorbed on the blade. When the double-edged scissors shear the strip head and the strip tail again, the waste will cause serious wear to the blade.

[0006] In order to achieve the above technical purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a tool structure, comprising:

[0008] an upper cutting member, comprising an upper blade; and

[0009] The lower cutting member includes a lower tool holder, a lower blade and a magnetic member. The lower tool holder is provided with a tool groove for the upper blade to be inserted into. The lower blade is arranged on the groove wall of the tool groove. The magnetic member is arranged on the groove bottom of the tool groove. When the upper blade is inserted into the tool groove, the upper blade and the lower blade can cooperate to shear the strip steel. The magnetic member can absorb metal debris generated when shearing the strip steel.

[0010] In some embodiments, the lower cutting member also includes a waste conveyor belt arranged at the bottom of the knife groove, the bottom of the knife groove is provided with a receiving groove, the magnetic attraction member is located in the receiving groove, and the top surface of the magnetic attraction member is flush with the bottom of the knife groove.

[0011] In some embodiments, there are multiple magnetic elements, and the multiple magnetic elements are arranged in a matrix.

[0012] In some embodiments, the top end of the lower blade is not higher than the top end of the lower blade holder.

[0013] In some embodiments, the lower cutting member further includes an adjusting gasket, and the adjusting gasket is disposed between the lower blade and the lower blade holder so as to maintain a distance between the lower blade and the lower blade holder.

[0014] In some embodiments, the lower blade is provided with a screw hole, and the lower cutting member further comprises a first screw, wherein the first screw sequentially passes through the lower blade holder and the adjusting gasket and is threadedly connected to the screw hole.

[0015] In some embodiments, the upper cutting member further comprises an upper tool holder made of aluminum alloy, the upper tool holder is T-shaped, and the upper blade is detachably connected to the upper tool holder via a second screw.

[0016] In the second aspect, the utility model also provides a strip lap resistance welding machine, including a machine body, a strip positioning assembly and the above-mentioned tool structure, the strip positioning assembly and the tool structure are both arranged on the machine body, the strip positioning assembly is used to fix the strip, and the tool structure is used to cut the fixed strip.

[0017] In some embodiments, the strip steel positioning assembly includes an upper clamp, and the upper clamp is made of aluminum alloy.

[0018] In some embodiments, the strip steel positioning assembly further includes a lower clamp, which is arranged opposite to the upper clamp and is used to cooperate in clamping and fixing the strip steel, and the lower clamp is made of aluminum alloy.

[0019] Compared with the prior art, the tool structure provided by the utility model can be used in a strip steel overlap resistance welding machine. When the strip steel overlap resistance welding machine shears the strip steel, the upper blade can be driven to move toward the knife groove so that the upper blade is inserted into the knife groove, and the upper blade cooperates with the lower blade to shear the strip steel. The metal debris generated in the process of shearing the strip steel can be adsorbed by the magnetic suction part at the bottom of the knife groove to prevent the metal debris from adhering to the upper blade and the lower blade, and the upper blade and the lower blade can avoid damaging the blades when shearing the strip steel next time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a tool structure provided by an embodiment of the utility model;

[0021] Figure 2 It is a structural schematic diagram of a strip steel lap resistance welding machine provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] In order to solve the technical problem that metal debris generated by a resistance welding machine when shearing strip steel adheres to the blade and affects subsequent cutting, the utility model provides a tool structure and a strip steel lap resistance welding machine, which can ensure that the metal debris generated by the blade shearing the strip steel can be magnetically adsorbed in time to separate the metal debris from the blade, thereby avoiding damage to the blade when the blade shears the strip steel next time.

[0024] It should be noted that the tool structure described in the utility model is used for but not limited to strip lap resistance welding machines, etc. For the convenience of explanation, in the utility model, only the application of the tool structure to strip lap resistance welding machines is used as an example for explanation, and the principle of applying the tool structure to other types of equipment is essentially the same as the principle applied to strip lap resistance welding machines, which will not be repeated here.

[0025] See also Figure 1 , Figure 1 The schematic diagram of the structure of the tool structure 100 in one embodiment of the utility model comprises an upper cutting member 1 and a lower cutting member 2 which are arranged relatively to each other. The upper cutting member 1 and the lower cutting member 2 can simultaneously act on the strip steel to shear the strip steel when they are approaching each other. The lower cutting member 2 is in a fixed state, and the upper cutting member 1 is connected to a corresponding driving structure, and the driving structure drives the upper cutting member 1 to move toward the lower cutting member 2 to shear the strip steel.

[0026] The upper cutting member 1 includes an upper blade 11, and the lower cutting member 2 includes a lower blade holder 21, a lower blade 22 and a magnetic member 23. The lower blade holder 21 is provided with a blade groove 211, and the lower blade 22 is arranged on the groove wall of the blade groove 211. The magnetic member 23 is arranged on the groove bottom of the blade groove 211. The groove bottom of the blade groove 211 is provided with a receiving groove, and the shape of the receiving groove is adapted to the magnetic member 23, so that the magnetic member 23 is just embedded in the receiving groove and fixed, and the top surface of the magnetic member 23 is flush with the groove bottom of the blade groove 211. The number of magnetic members 23 and receiving grooves can be multiple, and multiple magnetic members 23 are respectively arranged in multiple receiving grooves. Multiple magnetic members 23 can generate greater magnetic attraction so as to absorb more metal debris on the blade and the blade holder. When the upper blade 11 is inserted into the blade groove 211, the upper blade 11 and the lower blade 22 can cooperate to shear the steel strip, and the magnetic suction part 23 can absorb the metal debris generated when shearing the steel strip to prevent the metal debris from adhering to the upper blade 11 and the lower blade 22. The upper blade 11 and the lower blade 22 can avoid damaging the blades when shearing the steel strip next time.

[0027] In one embodiment, see Figure 1 The lower cutting member 2 further includes a waste conveyor belt 212 disposed at the bottom of the knife groove 211. The waste conveyor belt 212 is driven by a corresponding motor to continuously move. The metal debris falling into the knife groove 211 can fall onto the waste conveyor belt 212, and the waste conveyor belt 212 takes the metal debris away, so as to prevent the metal debris from staying in the knife groove 211 and affecting the shearing of the strip steel.

[0028] In one embodiment, see Figure 1 The upper cutting member 1 also includes an upper blade holder 12, which is T-shaped and made of aluminum alloy, so as to prevent the upper blade holder 12 from being magnetized and absorbing metal debris, which ultimately affects the shearing of the strip steel. The upper blade 11 is detachably connected to the upper blade holder 12 by a second screw 13, so that the subsequent replacement of the upper blade 11 is quick and convenient. The top of the upper blade holder 12 is convenient for connecting to a corresponding drive structure, so that the drive structure can conveniently drive the upper blade 11 to move downward to shear the strip steel.

[0029] refer to Figure 2 In the second aspect, the utility model also provides a strip lap resistance welding machine 101, including a machine body 3, a strip positioning assembly 4 and the above-mentioned tool structure 100, the strip positioning assembly 4 and the tool structure 100 are both arranged on the machine body 3, the strip positioning assembly 4 is used to fix the strip, and the tool structure 100 is used to cut the fixed strip.

[0030] The body 3 includes a first body 5, a second body 6, a third body 7 and a lower bus 8. During operation, the lower bus 8 is energized to generate magnetism, and the first body 5, the second body 6 and the third body 7 in contact with it generate magnetism and form an approximately horseshoe-shaped magnetic field 9 with the lower cutting piece 2. The third body 7 is close to the S pole of the magnetic field 9, and the lower cutting piece 2 is close to the N pole of the magnetic field 9. Therefore, the relative position between the lower blade 22 and the lower blade holder 21 included in the lower cutting piece 2 will directly affect the distribution of the magnetic field 9. In one embodiment, please refer to Figure 2 The top of the lower blade 22 is not higher than the top of the lower tool holder 21. This arrangement ensures that the magnetic flux lines will not be concentrated on the lower blade 22, but will be dispersed to the lower tool holder 21. The average magnetization intensity of the lower blade 22 and the lower tool holder 21 is reduced. After the lower blade 22 cuts the strip, metal debris is not likely to adhere to the lower blade 22.

[0031] In one embodiment, see Figure 1 and Figure 2 The lower cutting member 2 also includes an adjusting gasket 24, which is arranged between the lower blade 22 and the lower tool holder 21 to keep the lower blade 22 and the lower tool holder 21 at a distance. The relative distance between the lower blade 22 and the lower tool holder 21 can be adjusted by increasing or decreasing the number of adjusting gaskets 24. The adjusting gasket 24 is made of a material with good magnetic conductivity, such as a silicon steel sheet, and cannot be made of an epoxy board, a copper sheet, a brass sheet, a stainless steel sheet or other magnetically insulated material. If an magnetically insulated material is used to install between the blade and the lower tool holder, the magnetic flux lines will also be concentrated on the top of the lower blade 22, which is not conducive to the lower blade 22 dispersing the magnetic flux lines to the lower tool holder 21. In addition, the adjusting gasket 24 is also used to adjust the gap between the lower blade 22 and the upper blade 11 to prevent the gap from being too large or too small to affect the shearing of the strip.

[0032] In one embodiment, see Figure 1 and Figure 2 The lower blade 22 is provided with a screw hole, and the lower cutting member 2 further includes a first screw 25, which passes through the lower tool holder 21 and the adjusting gasket 24 in sequence and is threadedly connected to the screw hole, so that the lower blade 22 and the adjusting gasket 24 are stably installed and easy to disassemble and assemble.

[0033] In one embodiment, see Figure 2 The strip steel positioning assembly 4 includes an upper clamp 41 and a lower clamp 42. The lower clamp 42 is arranged opposite to the upper clamp 41 and is used to cooperate with the upper clamp 41 to clamp and fix the strip steel so that the strip steel can be cut stably. The upper clamp 41 and the lower clamp 42 are both made of aluminum alloy, so that after the other multiple parts of the body 3 are magnetized, the upper clamp 41 and the lower clamp 42 will not be magnetized, which can prevent the upper clamp 41 and the lower clamp 42 from absorbing the metal debris generated by cutting and causing damage to the surface of the strip steel when clamping the strip steel.

[0034] The specific implementation methods of the utility model described above do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A tool structure, characterized in that: include: an upper cutting member, comprising an upper blade; and The lower cutting member includes a lower tool holder, a lower blade and a magnetic member. The lower tool holder is provided with a tool groove for the upper blade to be inserted into. The lower blade is arranged on the groove wall of the tool groove. The magnetic member is arranged on the groove bottom of the tool groove. When the upper blade is inserted into the tool groove, the upper blade and the lower blade can cooperate to shear the strip steel. The magnetic member can absorb metal debris generated when shearing the strip steel.

2. The tool structure according to claim 1, characterized in that: The lower cutting member also includes a waste conveyor belt arranged at the bottom of the knife groove, the bottom of the knife groove is provided with a receiving groove, the magnetic attraction member is located in the receiving groove, and the top surface of the magnetic attraction member is flush with the bottom of the knife groove.

3. The tool structure according to claim 2, characterized in that: The number of the magnetic attraction components is multiple, and the multiple magnetic attraction components are arranged in a matrix.

4. The tool structure according to claim 1, characterized in that: The top end of the lower blade is not higher than the top end of the lower blade holder.

5. The tool structure according to claim 1, characterized in that: The lower cutting member further comprises an adjusting gasket, which is arranged between the lower blade and the lower blade holder so as to keep a distance between the lower blade and the lower blade holder.

6. The tool structure according to claim 5, characterized in that: The lower blade is provided with a screw hole, and the lower cutting member further comprises a first screw, which passes through the lower blade holder and the adjusting gasket in sequence and is threadedly connected to the screw hole.

7. The tool structure according to claim 1, characterized in that: The upper cutting piece also includes an upper knife frame made of aluminum alloy, the upper knife frame is T-shaped, and the upper blade is detachably connected to the upper knife frame via a second screw.

8. A strip lap resistance welding machine, characterized in that: It comprises a machine body, a strip steel positioning assembly and a tool structure as described in any one of claims 1 to 7, wherein the strip steel positioning assembly and the tool structure are both arranged on the machine body, the strip steel positioning assembly is used to fix the strip steel, and the tool structure is used to cut the fixed strip steel.

9. The strip lap resistance welding machine according to claim 8, characterized in that: The strip steel positioning assembly comprises an upper clamp, and the upper clamp is made of aluminum alloy.

10. The strip lap resistance welding machine according to claim 9, characterized in that: The strip steel positioning assembly also includes a lower clamp, which is arranged opposite to the upper clamp and is used to cooperate in clamping and fixing the strip steel, and the lower clamp is made of aluminum alloy.

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