An inductance protection bearing tape preparation equipment capable of automatic slitting and a preparation method thereof

Abstract

The application discloses a kind of automatically slitting inductance protection bearing tape preparation equipment and preparation method thereof, comprising: conveying table, heat pressing device, cutting device and cooling device are sequentially arranged in conveying table two sides from left to right;Including the following steps: S1, accurate positioning is carried out to bearing tape by positioning structure and position is corrected;S2, bearing tape is contacted with heater by positioning pressing plate and is pressed down, and the edge of bearing tape is softened;S3, the both sides of bearing tape are cut simultaneously by blade;S4, bearing tape is rapidly frozen and cooled by liquid nitrogen injection part, and then the bearing tape piece is blown to the blanking transmission part by air injection part, and the blanking of single bearing tape piece is completed.The application effectively solves the problem of curling caused by uneven stress distribution by combining heating treatment, arc cutting and air blowing blanking, improves production efficiency, improves product quality and stability, reduces manual operation and error, and reduces production cost.

Description

Technical Field

[0001] This invention relates to the field of carrier tape slitting technology, and in particular to an automatic slitting inductor protection carrier tape preparation equipment and its preparation method. Background Technology

[0002] Carrier tape is a strip-shaped product used in the electronic packaging industry, primarily for electronic component mounting. It works in conjunction with cover tape to hold electronic components such as resistors, capacitors, transistors, and diodes in pockets within the carrier tape. The cover tape is then sealed on top of the carrier tape to form a closed package, protecting the electronic components from contamination and damage during transport. During mounting, the cover tape is peeled off, and automated mounting equipment uses precise positioning via the carrier tape's index holes to sequentially remove the components from the pockets and mount them onto the integrated circuit board.

[0003] In the electronics manufacturing industry, inductor protection carrier tape is an important material used to protect electronic components from the effects of the external environment. With the miniaturization and weight reduction of electronic devices, the demand for inductor protection carrier tape is increasing. To meet market demand and improve production efficiency, it is necessary to develop equipment and a method for automatically cutting inductor protection carrier tape.

[0004] As the design size of electronic products continues to shrink, the volume of inductors is also shrinking, placing increasingly stringent requirements on the dimensions of the inductor protective carrier tape. Current technologies typically use CNC machine tools for cutting, a method capable of cutting complex two-dimensional shapes. However, uneven stress distribution during cutting can cause the cut edges of the carrier tape to curl, potentially damaging internal electronic components.

[0005] Therefore, an automatic cutting inductor protection carrier tape preparation equipment and preparation method are developed to solve the above problems. Summary of the Invention

[0006] This invention overcomes the shortcomings of the prior art and provides an automatic cutting device and method for preparing inductive protective carrier tape.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: an equipment for preparing an inductor protection carrier tape that can be automatically cut, comprising: a conveyor table, a hot pressing device, a cutting device, and a cooling device arranged sequentially on both sides of the conveyor table from left to right;

[0008] The conveyor platform includes a conveyor belt and is divided into a loading section, a processing section, and a unloading section; the inlet of the processing section is equipped with a positioning structure.

[0009] The hot pressing device includes: positioning plates disposed on both sides of the processing section, a pressure regulating part disposed at one end of the positioning plates, heaters disposed on both sides of the processing section, and a heating regulating part disposed at one end of the heaters; the positioning plates and the heaters are disposed on the same vertical plane.

[0010] The cutting device includes: a support frame fixedly connected to the conveying body, a plurality of sliding grooves connected to the support frame, a drive unit slidably disposed inside the sliding grooves, and a blade disposed at the bottom of the drive unit; the sliding grooves are composed of a plurality of semi-circular arc structures connected end to end;

[0011] The cooling device includes: a liquid nitrogen injection section disposed at the bottom of the feeding section, jet sections disposed on both sides of the feeding section, and a feeding conveying section disposed on the side of the feeding section away from the jet sections.

[0012] A control panel is provided on one side of the main body of the device, and the pressure regulating unit and the heating regulating unit are electrically connected to the control panel.

[0013] In a preferred embodiment of the present invention, the pressure regulating unit includes: a pressure sensor disposed at the bottom of the positioning plate, a potentiometer electrically connected to the pressure sensor, a pressure regulating valve disposed at one end of the positioning plate for adjusting the pressure magnitude, and a pressure control unit electrically connected to the pressure regulating valve for controlling the opening degree of the pressure regulating valve.

[0014] In a preferred embodiment of the present invention, the heating adjustment unit includes: a temperature sensor disposed at the bottom of the heater, and a temperature control unit electrically connected to the heater for controlling the temperature of the heater.

[0015] In a preferred embodiment of the present invention, the feeding and conveying unit includes: a plurality of connecting rods disposed opposite to each other on both sides of the feeding section, and conveying wheels fixedly connected to the connecting rods; the spacing between the plurality of conveying wheels disposed opposite to each other is equal to the width of the carrier belt.

[0016] In a preferred embodiment of the present invention, a plurality of placement slots are arranged in a horizontal array within the carrier belt, and functional strips are arranged between adjacent placement slots; the width of the placement slot is D, the width of the functional strip is L, and the length of the heater is D+L.

[0017] In a preferred embodiment of the present invention, the positioning structure includes: a photoresistor disposed on the conveyor belt, an infrared lamp disposed below the conveyor belt, and a positioning hole disposed on the function bar.

[0018] This invention also provides a method for preparing an automatically slitting inductor protection carrier tape manufacturing device, characterized by comprising the following steps:

[0019] S1. Place the carrier belt on the worktable, accurately position the carrier belt using the positioning structure, and correct the position of the carrier belt;

[0020] S2. The carrier belt is conveyed from the feeding section to the processing section by the conveyor belt. The carrier belt is pressed down to contact the heater by the positioning plate. The heater temperature is adjusted according to the material of the carrier belt to soften the edge of the carrier belt.

[0021] S3. Drive the conveyor belt forward to the cutting device, and drive the blades on both sides of the carrier belt to cut both sides of the carrier belt at the same time to obtain several carrier belt pieces. The cutting path is several semi-circular arcs connected end to end.

[0022] S4. Drive the conveyor belt forward to the quenching jet device, where the carrier belt is quenched and cooled by the liquid nitrogen jet section, and then the carrier belt piece is blown to the unloading conveyor section by the jet section to complete the unloading of a single carrier belt piece.

[0023] In a preferred embodiment of the present invention, in step S2, the carrier belt is made of either polycarbonate or polystyrene, and the heating temperature of the polycarbonate carrier belt is 230–250°C, while the heating temperature of the polystyrene carrier belt is 80–100°C.

[0024] In a preferred embodiment of the present invention, in step S3, the cutting speed is 2-3.5 mm / s and the cutting depth is 4-5 mm.

[0025] In a preferred embodiment of the present invention, in step S4, the liquid nitrogen spraying unit sprays the edge of each carrier strip at a flow rate of 0.5 to 0.8 ml per second, reducing the edge temperature of the carrier strip to -90 to -150°C for rapid freezing. The spraying time is 1 to 1.5 seconds. After rapid freezing, the carrier strip is moved by a conveyor belt to a position 5 to 7 cm away from the liquid nitrogen spraying unit on the side of the spraying unit. The spraying unit sprays each carrier strip at a flow rate of 3 to 5 ml per second for 0.7 to 1.2 seconds, blowing the carrier strip away from the conveyor belt and onto the unloading and conveying unit for collection.

[0026] This invention addresses the shortcomings of the prior art and has the following beneficial effects:

[0027] (1) This invention provides an automatic cutting inductor protection carrier strip preparation equipment and preparation method. By combining heat treatment, arc cutting and air blowing, it effectively solves the problem of edge curling caused by uneven stress distribution, improves production efficiency, improves product quality and stability, reduces manual operation and error, and reduces production costs.

[0028] (2) By setting up a positioning structure, this invention ensures the accurate position of the carrier belt in the equipment. The positioning structure can accurately determine the starting position and direction of the carrier belt, providing a basis for subsequent processing steps. At the same time, correcting the position of the carrier belt can avoid production errors caused by inaccurate positioning.

[0029] (3) The present invention can ensure that the edge of the bearing strip is heated evenly during the softening process by heat treatment, which can effectively prevent the curling phenomenon caused by uneven stress distribution in the prior art; and during the heating process, by precisely controlling the temperature, it can ensure that the bearing strip maintains appropriate elasticity and toughness during the softening process, thereby avoiding the occurrence of curling.

[0030] (4) The present invention further ensures uniform stress distribution of the carrier tape after cutting by using arc cutting method; avoids stress concentration at the cutting point caused by traditional straight cutting method, which leads to curling or deformation of the carrier tape in subsequent processing; using arc cutting method can disperse stress on the entire cutting path, thereby effectively avoiding the problem of stress concentration; this cutting method can also improve the accuracy and stability of cutting, ensuring that the quality and size of each carrier tape meet the requirements.

[0031] (5) The present invention uses liquid nitrogen spraying to rapidly cool the carrier belt, which can quickly cool the cut carrier belt to a low temperature, maintain its hardness and stability, help improve production efficiency, reduce cooling time, and thus speed up the entire production process; and by blowing the carrier belt to the unloading and conveying section through the jetting section, it can ensure that each carrier belt is accurately transported to the unloading and conveying section, which improves the unloading accuracy and unloading speed.

[0032] (6) In this invention, precise arc cutting and appropriate edge heating and softening treatment can ensure that the edge stress distribution of each carrier strip is uniform during cutting; and the arc curve cutting can make the change of the magnitude and direction of the force on the carrier strip at different positions more gradual and continuous, avoiding the sudden change of local stress that may occur during straight cutting. At the same time, it can make the carrier strip maintain a certain bending radius throughout the entire cutting process, and can release stress evenly.

[0033] (7) By starting the cutting from both sides of the bearing strip simultaneously, rather than from one side, this invention avoids local stress concentration in the initial stage. Cutting from both sides simultaneously makes the stress distribution more uniform; and the semi-circular cutting line is smooth, the area of ​​each cut is large, and the cutting line remains continuous without breakage, which is conducive to the smooth transmission of stress between the cutting lines. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is an overall three-dimensional structural diagram of a preferred embodiment of the present invention;

[0036] Figure 2 This is a three-dimensional structural diagram of the hot pressing device according to a preferred embodiment of the present invention;

[0037] Figure 3 This is a three-dimensional structural diagram of the cutting device according to a preferred embodiment of the present invention;

[0038] Figure 4 This is a flowchart of the preparation method of a preferred embodiment of the present invention;

[0039] In the diagram: 1. Conveyor table; 11. Conveyor belt; 12. Feeding section; 13. Processing section; 14. Discharging section; 2. Hot pressing device; 21. Positioning plate; 22. Pressure regulating unit; 23. Heater; 3. Cutting device; 31. Support frame; 32. Sliding groove; 33. Drive unit; 34. Blade; 4. Cooling device; 41. Liquid nitrogen injection unit; 42. Air jet unit; 43. Discharging and conveying unit. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] like Figure 1 As shown, an automatic cutting inductor protection carrier tape preparation equipment includes: a conveyor table 1, a hot pressing device 2, a cutting device 3 and a cooling device 4 arranged sequentially on both sides of the conveyor table 1 from left to right; the conveyor table 1 includes a conveyor belt 11, and the conveyor table 1 is divided into a feeding section 12, a processing section 13 and a discharging section 14; a positioning structure is provided at the entrance of the processing section 13.

[0042] A control panel is located on one side of the main body of the equipment. The pressure regulating unit 22 and the heating regulating unit are electrically connected to the control panel. The control panel is electrically connected to the stepper motor, and the photoresistor is electrically connected to the stepper motor.

[0043] Several placement slots are arranged in a horizontal array within the bearing belt, and functional strips are arranged between adjacent placement slots; the width of the placement slot is D, the width of the functional strip is L, and the length of the heater 23 is D+L.

[0044] The positioning structure includes: a photoresistor disposed on the conveyor belt 11, an infrared lamp disposed below the conveyor belt 11, and a positioning hole disposed on the function bar.

[0045] The positioning structure ensures the accurate placement of the carrier belt within the equipment. This structure precisely determines the belt's starting position and orientation, providing a basis for subsequent processing steps. Furthermore, correcting the carrier belt's position avoids production errors caused by inaccurate positioning.

[0046] like Figure 2 As shown, the hot pressing device 2 includes: positioning plates 21 disposed on both sides of the processing section 13, a pressure regulating part 22 disposed at one end of the positioning plates 21, a heater 23 disposed on both sides of the processing section 13, and a heating regulating part disposed at one end of the heater 23; the positioning plates 21 and the heater 23 are disposed on the same vertical plane.

[0047] The pressure regulating unit 22 includes: a pressure sensor disposed at the bottom of the positioning plate 21, a potentiometer electrically connected to the pressure sensor, a pressure regulating valve disposed at one end of the positioning plate 21 for adjusting the pressure, and a pressure control unit electrically connected to the pressure regulating valve for controlling the opening degree of the pressure regulating valve.

[0048] The control logic of the pressure control unit is as follows: Based on the material and thickness of the carrier belt, an initial pressure value is set. The pressure sensor monitors the pressure between the pressure roller and the carrier belt in real time. When the actual pressure value deviates from the set pressure value, the control system adjusts the opening of the pressure regulating valve to adjust the pressure between the pressure roller and the carrier belt until the actual pressure value matches the set pressure value. When the actual pressure exceeds the set pressure limit, the control system immediately closes the pressure regulating valve to prevent excessive pressure on the carrier belt.

[0049] The heating regulation unit includes: a temperature sensor disposed at the bottom of the heater 23, and a temperature control unit electrically connected to the heater 23 for controlling the temperature of the heater 23.

[0050] The control logic of the temperature control unit is as follows: The desired temperature value is set as the benchmark for temperature control according to production requirements. A temperature sensor monitors the temperature of heater 23 in real time. The control system compares the desired temperature value with the actual detected temperature value in real time, calculates the deviation between the two, and adjusts the power of heater 23 based on the magnitude of the deviation, thereby adjusting the temperature of heater 23. If the actual temperature is lower than the desired value, the control system increases the power of heater 23 to raise the temperature; if the actual temperature is higher than the desired value, the control system decreases the power of heater 23 to lower the temperature.

[0051] In order to prevent the product or equipment from being damaged by excessive temperature, the control system will set an over-temperature limit. When the actual temperature exceeds this limit, the control system will immediately shut down the heater 23 to prevent the temperature from continuing to rise.

[0052] Heating treatment ensures that the edges of the bearing strip are heated evenly during the softening process, effectively preventing edge curling caused by uneven stress distribution in existing technologies. Furthermore, precise temperature control during the heating process ensures that the bearing strip maintains appropriate elasticity and toughness during softening, thereby avoiding edge curling.

[0053] like Figure 3 As shown, the cutting device 3 includes: a support frame 31 fixedly connected to the conveying body, a plurality of sliding grooves 32 connected to the support frame 31, a drive unit 33 slidably disposed inside the sliding grooves 32, and a blade 34 disposed at the bottom of the drive unit 33; the sliding grooves 32 are composed of a plurality of semi-circular arc structures connected end to end.

[0054] The use of arc cutting further ensures uniform stress distribution in the cut carrier tape; it avoids stress concentration at the cut point, which can lead to curling or deformation of the carrier tape during subsequent processing, as is the case with traditional straight cutting. Arc cutting disperses stress throughout the entire cutting path, effectively preventing stress concentration. This cutting method also improves the accuracy and stability of the cutting, ensuring that the quality and dimensions of each carrier tape meet the requirements.

[0055] The cooling device 4 includes: a liquid nitrogen injection section 41 disposed at the bottom of the unloading section 14, an air jet section 42 disposed on both sides of the unloading section 14, and an unloading conveyor section 43 disposed on the side of the unloading section 14 away from the air jet section 42; the unloading conveyor section 43 includes: a plurality of connecting rods disposed opposite to each other on both sides of the unloading section 14, and conveyor wheels fixedly connected to the connecting rods; the spacing between the plurality of conveyor wheels disposed opposite to each other is equal to the width of the carrier belt.

[0056] The carrier belt is rapidly cooled by the liquid nitrogen spray unit 41, which can quickly cool the cut carrier belt pieces to a low temperature, maintain their hardness and stability, help improve production efficiency, reduce cooling time, and thus speed up the entire production process. Furthermore, the carrier belt pieces are blown to the unloading and conveying unit 43 by the jet unit 42, which can ensure that each carrier belt piece is accurately transferred to the unloading and conveying unit 43, thereby improving the unloading accuracy and speed.

[0057] like Figure 4 As shown, the present invention also provides a method for preparing an equipment for automatically slitting inductor protection carrier tape, characterized by comprising the following steps:

[0058] S1. Place the carrier belt on the worktable, accurately position the carrier belt using the positioning structure, and correct the position of the carrier belt;

[0059] S2. The carrier belt is conveyed from the feeding section 12 to the processing section 13 by the conveyor belt 11. The carrier belt is pressed down by the positioning plate 21 to contact the heater 23. The temperature of the heater 23 is adjusted according to the material of the carrier belt to soften the edge of the carrier belt.

[0060] S3. Drive the conveyor belt 11 forward to the cutting device 3, and drive the blades 34 through the two driving parts 33 to cut both sides of the carrier belt simultaneously to obtain several carrier belt pieces. The cutting path is several semi-circular arcs connected end to end. The cutting speed is 2 to 3.5 mm / s and the cutting depth is 4 to 5 mm.

[0061] S4. Drive the conveyor belt 11 forward to the freezing jet device, freeze and cool the carrier belt through the liquid nitrogen jet section 41, and then blow the carrier belt piece to the unloading conveyor section 43 through the jet section 42 to complete the unloading of a single carrier belt piece.

[0062] In S1, the precise positioning of the bearing belt using the positioning structure includes the following steps:

[0063] S11. Place the carrier belt on the workbench for initial alignment;

[0064] S12. Turn on the infrared lamp so that the infrared light penetrates the positioning hole and shines on the photoresistor. As the light intensity increases, the resistance decreases and the stepper motor connected to the photoresistor stops working for 5-7 seconds.

[0065] S13. The control panel starts timing after detecting that the stepper motor has stopped working. When the stop time reaches ≥7s, the control panel reactivates the stepper motor and starts working again.

[0066] In S2, the carrier belt is made of either polycarbonate or polystyrene. The heating temperature of the polycarbonate carrier belt is 230–250°C, and the heating temperature of the polystyrene carrier belt is 80–100°C.

[0067] In S3, by starting the cutting simultaneously from both sides of the bearing strip, rather than from one side, localized stress concentrations can be avoided in the initial stage. Cutting from both sides simultaneously results in a more uniform stress distribution; furthermore, the semi-circular cutting line is smooth, the area affected by each cut is large, and the cutting line remains continuous without breaks, which is conducive to the smooth transfer of stress between the cutting lines.

[0068] In S4, the liquid nitrogen spraying unit 41 sprays the edge of each carrier strip at a flow rate of 0.5 to 0.8 ml per second, reducing the edge temperature of the carrier strip to -90 to -150°C for rapid freezing. The spraying time is 1 to 1.5 seconds. After freezing, the carrier strip is moved by the conveyor belt 11 to a position 5 to 7 cm away from the liquid nitrogen spraying unit 42 on the side opposite to the liquid nitrogen spraying unit 41. The spraying unit 42 sprays each carrier strip at a flow rate of 3 to 5 ml per second for 0.7 to 1.2 seconds, blowing the carrier strip away from the conveyor belt 11 and sending it to the unloading and conveying unit 43 for collection.

[0069] This invention, through precise arc cutting and appropriate edge heating and softening treatment, can ensure that the edge stress distribution of each carrier strip is uniform during cutting; and the arc curve cutting can make the changes in the magnitude and direction of the stress on the carrier strip at different positions more gradual and continuous, avoiding the local stress abrupt changes that may occur with straight cutting. At the same time, it can ensure that the carrier strip maintains a certain bending radius throughout the entire cutting process, and can release stress evenly.

[0070] Example 1

[0071] S1. Place the carrier belt on the workbench for initial alignment, turn on the infrared lamp so that the infrared light penetrates the positioning hole and shines on the photoresistor. As the light intensity increases, the resistance decreases, and the stepper motor connected to the photoresistor stops working for 5 seconds. The control panel starts timing after detecting that the stepper motor has stopped working. When the stopping time reaches ≥7 seconds, the control panel reactivates the stepper motor and starts working again, and corrects the position of the carrier belt.

[0072] S2. The carrier belt is conveyed from the feeding section to the processing section by the conveyor belt. The carrier belt is pressed down to contact the heater by the positioning plate. The carrier belt is made of polystyrene. The heater temperature is adjusted to 80°C according to the material of the carrier belt to soften the edge of the carrier belt.

[0073] S3. Drive the conveyor belt forward to the cutting device, and drive the blades on both sides of the carrier belt to cut simultaneously to obtain several carrier belt pieces. The cutting path is a series of semi-circular arcs connected end to end. The cutting speed is 2mm / s and the cutting depth is 4mm.

[0074] S4. Drive the conveyor belt forward to the rapid freezing jet device, where the carrier belt is rapidly frozen and cooled by the liquid nitrogen jetting section. The liquid nitrogen jetting section sprays the edge of each carrier belt piece at a flow rate of 0.5 ml per second, reducing the edge temperature of the carrier belt piece to -90°C to achieve rapid freezing. The spraying time is 1 second. After rapid freezing, the carrier belt piece is moved by the conveyor belt to a position 5 cm away from the liquid nitrogen jetting section on the side of the jetting section. Then, the jetting section blows the carrier belt piece to the unloading conveyor section. The jetting section sprays each carrier belt piece at a flow rate of 3 ml per second for 0.7 seconds, blowing the carrier belt piece away from the conveyor belt and into the unloading conveyor section for collection, completing the unloading of a single carrier belt piece.

[0075] Example 2

[0076] The difference between this embodiment and embodiment one is that in this embodiment, in step S2, the carrier belt material is polystyrene, and the heater temperature is adjusted to 100°C according to the carrier belt material.

[0077] Example 3

[0078] The difference between this embodiment and Embodiment 1 is that in this embodiment, the cutting speed in step S3 is 3.5 mm / s.

[0079] Example 4

[0080] The difference between this embodiment and Embodiment 1 is that in this embodiment, in step S4, the liquid nitrogen spraying unit sprays the edge of each carrier strip at a flow rate of 0.8 ml per second to reduce the temperature of the carrier strip edge to -150°C, and the spraying time is 1.5 s.

[0081] Example 5

[0082] The difference between this embodiment and Embodiment 1 is that in this embodiment, in step S4, the jetting unit sprays each carrier strip at a flow rate of 5 ml per second for 1.2 seconds.

[0083] Comparative Example 1

[0084] The difference between this comparative example and Example 1 is that in this comparative example, after the carrier belt is placed on the workbench for preliminary alignment and correction of the carrier belt position, it is directly cut, that is, step S2 is not present in this comparative example.

[0085] Comparative Example 2

[0086] The difference between this comparative example and Example 1 is that in this comparative example, after the carrier belt is cut, it is directly blown to the unloading and conveying section for collection, that is, there is no liquid nitrogen injection section in this comparative example.

[0087] Comparative Example 3

[0088] The difference between this comparative example and Example 1 is that in this comparative example, in step S3, the blade is driven by one side drive unit to cut one side of the carrier belt to obtain several carrier belt pieces, and the cutting path is several semi-circular arcs connected end to end.

[0089] Comparative Example 4

[0090] The difference between this comparative example and Example 1 is that in this comparative example, in step S3, the blades driven by the two driving parts simultaneously cut both sides of the carrier belt to obtain several carrier belt pieces, and the cutting path is a straight line.

[0091] Experimental Example 1

[0092] The carrier tapes obtained in Examples 1 to 5, as well as Comparative Examples 1 and 2, were tested using the following methods:

[0093] (1) Toughness test:

[0094] The carrier tapes obtained from Examples 1 to 5, as well as Comparative Examples 1 and 2, were subjected to repeated edge folding tests, and the minimum value was taken as the number of times the tapes could be folded.

[0095] Toughness assessment:

[0096] A: It can be folded in half more than 15 times;

[0097] B: Can be folded more than 10 times but less than 15 times;

[0098] C: Can be folded in half less than 10 times.

[0099] (2) Appearance test:

[0100] The surfaces of the carrier tapes obtained in Examples 1 to 5, as well as Comparative Examples 1 and 2, were observed using a PZ-SM-1 magnifying glass. The length of the five connected carrier tapes was used as the detection range.

[0101] Appearance assessment:

[0102] A: The surface is free of bumps, cracks, and wrinkles.

[0103] B: Parts with uneven surfaces, cracks, and wrinkles.

[0104] The above test data are summarized in Table 1.

[0105] Table 1 Performance Test Table

[0106] experimental group Number of times it can be folded Toughness assessment Appearance judgment Example 1 19 A A Example 2 21 A A Example 3 25 A A Example 4 32 A B Example 5 33 A A Comparative Example 1 8 C A Comparative Example 2 11 B A

[0107] Based on the above experimental data, the following conclusions can be drawn:

[0108] The number of times that the materials could be folded in half in Examples 1 to 5 was higher than that in the comparative example, indicating that the treatment method used in the examples could improve the toughness of the materials. Furthermore, the toughness and appearance of Examples 1 to 3 and 5 were both rated as Grade A, indicating that the toughness and appearance quality of the materials treated in these examples were very good. The toughness of Example 4 was still Grade A, but the appearance rating dropped to Grade B, indicating that the material had good toughness but its appearance quality decreased under this treatment method.

[0109] The low number of folds for Comparative Examples 1 and 2, and the toughness rating of Comparative Example 1 as Grade C, indicate that the toughness of the material would decrease if the treatment method described in the examples was not used.

[0110] Overall, the treatment methods used in Examples 1 to 3 and 5 can effectively improve the toughness and appearance quality of the material. The treatment method in Example 4 can also improve toughness, but it affects the appearance quality.

[0111] Experimental Example 2

[0112] The edge burr ratio of the carrier sheets obtained in Examples 1 to 5, as well as Comparative Examples 3 and 4, was tested using the following method:

[0113] Random sampling: One sample was randomly selected from the carrier sheets obtained in Examples 1 to 5, as well as Comparative Examples 3 and 4, for testing;

[0114] Prepare testing tools: Use an MM-400N microscope to illuminate the sample cutting edge in a strong light source environment with a light flux of 500 lumens and a color temperature of 5000K, so as to more accurately observe the burrs on the cutting edge.

[0115] Observe the cut surface: Observe the burrs on the cut surface using an MM-400N microscope, and record the number, size and distribution of the burrs;

[0116] Burr ratio measurement: Calculate the ratio of the number of burrs to the total area of ​​the cut surface, i.e., the burr ratio. It can be calculated using the following formula: Burr ratio = (Number of burrs / Total area of ​​cut surface) × 100%;

[0117] Record the data: Record the number, size and distribution of the observed burrs, as well as the calculated burr ratio, and summarize them in Table 2.

[0118] Burr determination:

[0119] A: Burr ratio less than 3%;

[0120] B: Burr ratio is between 3% and 5%;

[0121] C: Burr ratio greater than 5%.

[0122] Table 2 Burr Judgment Table

[0123]

[0124] As shown in the table above, the number of burrs produced by the two-sided arc cutting method in Examples 1 to 5 ranged from 235 to 251, with an average size between 5.9 and 6.9 μm, and the distribution was relatively uniform. In contrast, the number and size of burrs produced by the one-sided arc cutting method in Comparative Example 3 and the straight cutting method in Comparative Example 4 were significantly greater than those in the Example groups. Comparative Example 3 had 535 burrs with a size of 11.5 μm; Comparative Example 4 had 709 burrs with a size of 13.4 μm.

[0125] The burr ratio in the Example Group was between 2.03% and 2.46%, both meeting the Grade A standard; while the burr ratios in Comparative Examples 3 and 4 were 4.34% and 5.61%, respectively, both below the Grade A standard; at the same time, the burr distribution in the Example Group was relatively uniform, while that in Comparative Examples 3 and 4 was uneven.

[0126] In summary, the arc cutting method used in the example group can be considered superior to the one-sided arc cutting method and straight cutting method used in the comparative group in terms of the number, size, and distribution of burrs. This indicates that arc cutting can effectively reduce the number and size of burrs and make the burr distribution more uniform, achieving better surface quality.

[0127] Based on the preferred embodiments of the present invention described above, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An automated cutting device for preparing inductor protection carrier tape, comprising: A conveyor table, comprising a hot pressing device, a cutting device, and a cooling device arranged sequentially from left to right on both sides of the conveyor table, is characterized in that... The conveyor platform includes a conveyor belt and is divided into a loading section, a processing section, and a unloading section; the inlet of the processing section is equipped with a positioning structure. The hot pressing device includes: positioning plates disposed on both sides of the processing section, a pressure regulating part disposed at one end of the positioning plates, heaters disposed on both sides of the processing section, and a heating regulating part disposed at one end of the heaters; the positioning plates and the heaters are disposed on the same vertical plane; a plurality of placement slots are horizontally arranged in an array within the bearing belt, and functional strips are disposed between adjacent placement slots; the width of the placement slots is D, the width of the functional strips is L, and the length of the heaters is D+L; The cutting device includes: a support frame fixedly connected to the conveyor table, a plurality of sliding grooves connected to the support frame, a drive unit slidably disposed inside the sliding grooves, and a blade disposed at the bottom of the drive unit; the sliding grooves are composed of a plurality of semi-circular arc structures connected end to end. The cooling device includes: a liquid nitrogen injection section disposed at the bottom of the feeding section, jet sections disposed on both sides of the feeding section, and a feeding conveying section disposed on the side of the feeding section away from the jet sections. A control panel is provided on one side of the equipment, and the pressure regulating unit and the heating regulating unit are electrically connected to the control panel.

2. The equipment for automatically slitting inductor protection carrier tape preparation according to claim 1, characterized in that: The pressure regulating unit includes: a pressure sensor disposed at the bottom of the positioning plate, a potentiometer electrically connected to the pressure sensor, a pressure regulating valve disposed at one end of the positioning plate for adjusting the pressure, and a pressure control unit electrically connected to the pressure regulating valve for controlling the opening degree of the pressure regulating valve.

3. The equipment for automatically slitting inductor protection carrier tape preparation according to claim 1, characterized in that: The heating regulation unit includes: a temperature sensor disposed at the bottom of the heater, and a temperature control unit electrically connected to the heater for controlling the temperature of the heater.

4. The equipment for automatically slitting inductor protection carrier tape preparation according to claim 1, characterized in that: The material feeding and conveying unit includes: a plurality of connecting rods arranged opposite to each other on both sides of the material feeding section, and conveying wheels fixedly connected to the connecting rods; the spacing between the plurality of conveying wheels arranged opposite to each other is equal to the width of the carrying belt.

5. The equipment for automatically slitting inductor protection carrier tape preparation according to claim 1, characterized in that: The positioning structure includes: a photoresistor disposed on the conveyor belt, an infrared lamp disposed below the conveyor belt, and a positioning hole disposed on the function bar.

6. A method for preparing an automatically slitting inductive protective carrier tape preparation device based on any one of claims 1-5, characterized in that, Includes the following steps: S1. Place the carrier belt on the worktable, accurately position the carrier belt using the positioning structure, and correct the position of the carrier belt; S2. The carrier belt is conveyed from the feeding section to the processing section by the conveyor belt. The carrier belt is pressed down to contact the heater by the positioning plate. The heater temperature is adjusted according to the material of the carrier belt to soften the edge of the carrier belt. S3. Drive the conveyor belt forward to the cutting device, and drive the blades on both sides of the carrier belt to cut both sides of the carrier belt at the same time to obtain several carrier belt pieces. The cutting path is several semi-circular arcs connected end to end. S4. Drive the conveyor belt forward to the quenching jet device, where the carrier belt is quenched and cooled by the liquid nitrogen jet section, and then the carrier belt piece is blown to the unloading conveyor section by the jet section to complete the unloading of a single carrier belt piece.

7. The method for preparing an automatically slitting inductor protection carrier tape preparation device according to claim 6, characterized in that: In S2, the carrier belt is made of either polycarbonate or polystyrene. The heating temperature of the polycarbonate carrier belt is 230 to 250 degrees Celsius, and the heating temperature of the polystyrene carrier belt is 80 to 100 degrees Celsius.

8. The method for preparing an automatically slitting inductor protection carrier tape preparation device according to claim 6, characterized in that: In S3, the cutting speed is 2 to 3.5 mm / s, and the cutting depth is 4 to 5 mm.

9. The method for preparing an automatically slitting inductor protection carrier tape preparation device according to claim 6, characterized in that: In step S4, the liquid nitrogen spray unit sprays the edge of each carrier strip at a flow rate of 0.5 to 0.8 ml per second, reducing the edge temperature of the carrier strip to -90 to -150 degrees Celsius for rapid freezing. The spraying time is 1 to 1.5 seconds. After freezing, the carrier strip is moved by the conveyor belt to a position 5 to 7 cm away from the liquid nitrogen spray unit on the side of the spray unit. The spray unit sprays each carrier strip at a flow rate of 3 to 5 ml per second for 0.7 to 1.2 seconds, blowing the carrier strip off the conveyor belt and onto the unloading and conveying unit for collection.

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