Pulse instantaneous ironing assembly

Abstract

The utility model relates to the technical field of plastic edge sealing, and discloses a pulse instantaneous hot-pressing assembly which comprises an alloy heating sheet, a hot-pressing plate, a hot-pressing plate, a hot-pressing plate, a hot-pressing plate and a hot-pressing plate, the clamping part is connected to the alloy heating sheet, and the clamping part is used for clamping and fixing the alloy heating sheet; the supporting part comprises an upper die unit and a lower die unit, the clamping part is installed on the upper die unit and / or the lower die unit, and the alloy heating piece is attached to the upper die unit and / or the lower die unit. By means of the pulse instantaneous hot-pressing assembly, the alloy heating piece with the pulse current can be rapidly heated to carry out hot-pressing on a plastic bag, due to the fact that the size of the alloy heating piece is small, heat accumulated in the alloy heating piece is little, the alloy heating piece and the edge sealing position can be rapidly cooled, and after hot-pressing is completed, the plastic bag can be rapidly heated. The upper die unit and the lower die unit can be directly split, so that the alloy heating sheet is separated from the plastic bag, and the edge sealing efficiency of the plastic bag made of a single material is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of plastic edge sealing, and more specifically, it relates to a pulse instantaneous hot pressing assembly. Background Technology

[0002] Plastic bags are an essential item in people's daily lives, often used to pack other items. Traditional plastic bags are made of a composite material of PE (polyethylene) and PET (polyethylene terephthalate). Hot plate heat sealing is a common method for sealing plastic bags. When a hot plate is used to heat seal the plastic bag, the two inner PE film layers melt and stick together. The two outer PET film layers have a higher melting point than the PE film layers and will not melt. Their surface adhesion is weaker and they will not stick to the hot plate. After the heat sealing is completed, the plastic bag is easy to separate from the hot plate, allowing for rapid and continuous sealing of plastic bags.

[0003] With increasing global environmental awareness, plastic bags are gradually shifting towards single-material designs. Single-material plastic bags are easier to recycle and reuse because they do not require the complex separation process of multi-layer composite materials. This reduces recycling costs and improves recycling efficiency.

[0004] However, when hot-sealing single-material plastic bags, both the inner and outer layers are made of the same material and will melt. After the hot plate is heated, due to its large size, a lot of heat is accumulated inside. The temperature of the hot plate and the sealing area of ​​the plastic bag (the area where the plastic bag contacts the hot plate) cannot drop quickly. The inability of the sealing area to cool and solidify quickly will cause the plastic bag to stick to the hot plate. It is necessary to wait for the hot plate and the sealing area to cool to a certain temperature and for the sealing area to reach a certain degree of solidification before the plastic bag can be completely separated from the hot plate and subsequent hot-sealing can be carried out. This will greatly reduce the sealing efficiency of single-material plastic bags. Utility Model Content

[0005] The purpose of this invention is to overcome the defects in the existing technology and provide a pulse instantaneous hot pressing component that can quickly heat and cool, and can quickly and continuously seal the edges of plastic bags made of a single material.

[0006] To achieve the above objectives, the technical solution of this utility model is to provide a pulse instantaneous hot pressing component, comprising:

[0007] An alloy heating element, wherein at least one alloy heating element is provided, and the alloy heating element is supplied with a pulse current;

[0008] A clamping part is connected to the alloy heating element, and multiple sets of clamping parts are provided. The clamping parts are used to clamp and fix the alloy heating element.

[0009] The support includes an upper mold unit and a lower mold unit, the clamping part is installed on the upper mold unit and / or the lower mold unit, and the alloy heating plate is attached to the upper mold unit and / or the lower mold unit.

[0010] By using the pulse instantaneous hot stamping assembly described in this utility model, the alloy heating plate carrying a pulse current can be heated rapidly to heat the plastic bag, making the two film surfaces at the sealing edge of the plastic bag come into close contact and stick together. Since the alloy heating plate is small in size and has less heat accumulation inside, both the alloy heating plate and the sealing edge can be cooled rapidly. After the hot stamping is completed, the upper mold unit and the lower mold unit can be directly separated, allowing the alloy heating plate to separate from the plastic bag, and then subsequent hot stamping and sealing can be carried out, realizing rapid and continuous sealing of plastic bags of a single material, which greatly improves the sealing efficiency of plastic bags of a single material.

[0011] Preferably, two alloy heating elements are provided, and both alloy heating elements are supplied with the same frequency pulse current. One alloy heating element is attached to the upper mold unit, and the other alloy heating element is attached to the lower mold unit. High-temperature resistant cloth is attached to the side of each alloy heating element that is close to it. When the upper mold unit and the lower mold unit are closed, the two high-temperature resistant cloths are located on opposite sides of the heat-sealing material. This design helps improve the quality and efficiency of heat sealing, as well as the overall aesthetics of the plastic bag. Furthermore, the high-temperature resistant cloth can separate the two alloy heating elements, preventing short circuits.

[0012] Preferably, the upper mold unit includes an upper mold base and an upper pad, and the lower mold unit includes a lower mold base and a lower pad. The upper pad is installed on the side of the upper mold base near the lower mold base, and an upper positioning groove is formed on the side of the upper pad near the lower mold base. The lower pad is installed on the side of the lower mold base near the upper mold base, and a lower positioning groove corresponding to the upper positioning groove is formed on the side of the lower pad near the upper mold base. The two alloy heating elements are respectively placed in the upper positioning groove and the lower positioning groove. The depth of both the upper and lower positioning grooves is less than the thickness of the alloy heating elements. This design ensures the straightness of the alloy heating elements and guarantees the effect of hot stamping and sealing.

[0013] Preferably, the upper mold base has upper mounting grooves at both ends near the lower mold base, and the lower mold base has lower mounting grooves at both ends near the upper mold base. The clamping part is installed in the upper mounting groove and the lower mounting groove. The two ends of the upper positioning groove extend along its length to the end face of the upper pad, and the bottom end face of the clamping part installed in the upper mounting groove is higher than the top wall of the upper positioning groove. The two ends of the lower positioning groove extend along its length to the end face of the lower pad, and the top end face of the clamping part installed in the lower positioning groove is lower than the bottom wall of the lower positioning groove. With this design, the two alloy heating plates will not affect the mold closing of the upper mold unit and the lower mold unit.

[0014] Preferably, the clamping part includes an adjusting unit, a slider, and a pressure block. The adjusting unit is installed in the upper mounting groove and the lower mounting groove. The slider is slidably connected to the adjusting unit, and the sliding direction of the slider is consistent with the length direction of the alloy heating element. The adjusting unit is used to adjust the position of the slider on the adjusting unit. The pressure block is installed on the slider by a first bolt, and the pressure block cooperates with the slider to clamp the alloy heating element. This design allows the clamping part to adapt to the thermal expansion and contraction changes of the alloy heating element, ensuring that the alloy heating element is always in a taut state, guaranteeing the effect of hot stamping and sealing, and facilitating the disassembly and replacement of the alloy heating element.

[0015] Preferably, the slider has a groove at its top, and the pressure block has a protrusion at its bottom that mates with the groove. The length direction of the groove is aligned with the length direction of the alloy heating element. The pressure block has a countersunk hole that mates with the first bolt, and the slider has a threaded hole that mates with the countersunk hole, with the threaded hole communicating with the groove. This design helps improve the installation accuracy of the alloy heating element and extends its service life.

[0016] Preferably, the slider has an inclined surface. The inclined surface of the slider located in the upper mounting groove is situated between the pressure block and the upper pad, and the angle between the inclined surface of the slider in the upper mounting groove and the bottom end face is obtuse. The inclined surface of the slider located in the lower mounting groove is situated between the pressure block and the lower pad, and the angle between the inclined surface of the slider in the lower mounting groove and the top end face is obtuse. This design can reduce wear between the alloy heating element and the slider, and improve the service life of the alloy heating element.

[0017] Preferably, the adjustment unit includes a partition, a guide rail, and a spring. The partition and guide rail of the same adjustment unit are both installed in the upper or lower mounting slot. The guide rail is slidably connected to the slider, and the spring is installed between the partition and the slider. This design allows the position of the slider to be automatically adjusted by the extension and retraction of the spring, keeping the alloy heating element taut.

[0018] Preferably, the slider is a conductor, and a terminal block is mounted on the slider. This design facilitates the connection of an external power source to power the alloy heating element.

[0019] Preferably, the upper pad, the lower pad, the partition, and the guide rail are all made of insulating and heat-insulating materials. This design improves operational safety.

[0020] The beneficial effects of this utility model are as follows:

[0021] By using the pulse instantaneous hot stamping assembly described in this utility model, the alloy heating plate carrying a pulse current can quickly heat up and hot stamp the plastic bag, making the two film surfaces at the sealing edge of the plastic bag come into close contact and stick together. Because the alloy heating plate is small in size and has less heat accumulation inside, both the alloy heating plate and the sealing edge can cool down quickly. After hot stamping, the upper mold unit and the lower mold unit can be directly separated, allowing the alloy heating plate to separate from the plastic bag, and then subsequent hot stamping and sealing can be carried out. This achieves rapid and continuous sealing of plastic bags made of a single material, greatly improving the sealing efficiency of plastic bags made of a single material. In addition, the alloy heating plate is easier to disassemble and replace, reducing maintenance costs. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the pulse instantaneous heat pressing component;

[0023] Figure 2 yes Figure 1 Enlarged view of the structure at point A in the middle;

[0024] Figure 3 This is a partial three-dimensional structural diagram of the upper mold unit and the clamping part;

[0025] Figure 4 yes Figure 3 Enlarged view of the structure at point B;

[0026] Figure 5 This is a partial three-dimensional structural diagram of the lower mold unit and the clamping part;

[0027] Figure 6 yes Figure 5 Enlarged view of the structure at point C;

[0028] Figure 7This is a partial front view schematic diagram of the pulse instantaneous heat pressing component;

[0029] Figure 8 This is the first exploded view of the three-dimensional structure of the support unit (the external power line is wrapped around the terminal block in the figure).

[0030] Figure 9 This is the exploded view of the second type of three-dimensional structure of the support section.

[0031] In the diagram: 100, alloy heating element;

[0032] 200. Clamping part; 210. Slider; 211. Bottom end face; 212. Top end face; 213. Groove; 214. Threaded hole; 215. Support surface; 216. Inclined surface; 217. Second mounting hole; 220. Pressure block; 221. Protrusion; 222. Countersunk hole; 223. Clamping surface; 230. First bolt; 240. Partition plate; 241. First mounting hole; 250. Guide rail; 260. Spring; 270. Terminal block;

[0033] 300, Support unit; 310, Upper mold unit; 311, Upper mold base; 312, Upper pad; 313, Upper positioning groove; 3131, Top wall; 314, Upper mounting groove; 320, Lower mold unit; 321, Lower mold base; 322, Lower pad; 323, Lower positioning groove; 3231, Bottom wall; 324, Lower mounting groove. Detailed Implementation

[0034] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed to enable those skilled in the art to better understand and implement the subject matter described herein. Changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0035] To better understand this utility model, the following is in conjunction with... Figures 1-9 The pulse instantaneous hot pressing component of this utility model is described in detail.

[0036] Example 1:

[0037] like Figure 1 and Figure 2 As shown, the pulse instantaneous hot pressing assembly includes:

[0038] Alloy heating element 100, at least one alloy heating element 100 is provided, and pulse current is passed through the alloy heating element 100;

[0039] Clamping part 200 is connected to alloy heating plate 100. Multiple clamping parts 200 are provided. Clamping parts 200 are used to clamp and fix alloy heating plate 100.

[0040] The support part 300 includes an upper mold unit 310 and a lower mold unit 320, the clamping part 200 is installed on the upper mold unit 310 and / or the lower mold unit 320, and the alloy heating plate 100 is attached to the upper mold unit 310 and / or the lower mold unit 320.

[0041] It should be noted that when the pulse current passes through the alloy heating element 100, the pulse current provides a large amount of electrical energy to the alloy heating element 100. The current increases rapidly in a short time (tens of milliseconds). Due to the internal resistance of the alloy heating element 100, the electrical energy is converted into heat energy, causing the alloy heating element 100 to heat up rapidly. The alloy heating element 100 transfers heat to the plastic bag, heating the sealed edge of the plastic bag (the area where the plastic bag contacts the alloy heating element 100) to a temperature exceeding the viscosity of the plastic bag. The surface of the sealed edge becomes soft and has a certain fluidity. At this time, the squeezing force of the alloy heating element 100 and the support 300 on the sealed edge causes the two film surfaces of the plastic bag to come into close contact and stick together.

[0042] During the hot sealing process, the heat on the surface of the alloy heating plate 100 is transferred to the plastic bag through heat conduction. The temperature of the alloy heating plate 100 itself decreases. When the pulse current stops, no new heat energy is generated inside the alloy heating plate 100, and the heat on the surface of the alloy heating plate 100 continues to be rapidly transferred to the surrounding environment through heat conduction and heat radiation. Furthermore, due to the small volume of the alloy heating plate 100, less heat is accumulated inside, and the temperature of the alloy heating plate 100 drops rapidly. The softened film at the sealing edge also cools rapidly and completes preliminary curing. Since the contact area between the alloy heating plate 100 and the plastic bag is small, the adhesion between the pre-cured plastic bag at the sealing edge and the alloy heating plate 100 is small. After the hot sealing is completed, the upper mold unit 310 and the lower mold unit 320 can be directly separated, allowing the alloy heating plate 100 to separate from the plastic bag. The plastic bag will not be damaged during the separation process, which greatly improves the efficiency of sealing the plastic bag. The pre-cured sealing edge will continue to cure, thus forming a firm sealing edge.

[0043] When only one alloy heating element 100 is provided, two sets of clamping parts 200 are provided. The two sets of clamping parts 200 respectively clamp and fix both ends of the alloy heating element 100, keeping the alloy heating element 100 taut. If both clamping parts 200 are installed on the upper mold unit 310, the alloy heating element 100 is attached to the upper mold unit 310. During hot stamping and sealing, the upper mold unit 310 and the lower mold unit 320 close, and one side of the plastic bag abuts against the alloy heating element 100, while the other side of the plastic bag... One side of the plastic bag abuts against the lower mold unit 320, and the alloy heating plate 100 and the lower mold unit 320 press the sealing edge; if both clamping parts 200 are installed on the lower mold unit 320, the alloy heating plate 100 is attached to the lower mold unit 320. When hot sealing is performed, the upper mold unit 310 and the lower mold unit 320 close the mold, one side of the plastic bag abuts against the alloy heating plate 100, and the other side of the plastic bag abuts against the upper mold unit 310. The alloy heating plate 100 and the upper mold unit 310 press the sealing edge.

[0044] When there are two alloy heating elements 100, there are four sets of clamping parts 200. Two sets of clamping parts 200 are installed on the upper mold unit 310 and clamp the two ends of the alloy heating elements 100 attached to the upper mold unit 310 respectively. The other two sets of clamping parts 200 are installed on the lower mold unit 320 and clamp the two ends of the alloy heating elements 100 attached to the lower mold unit 320 respectively. When hot sealing is performed, the upper mold unit 310 and the lower mold unit 320 close the mold, and the two sides of the plastic bag abut against the two alloy heating elements 100 respectively, and the two alloy heating elements 100 press the sealing edge.

[0045] By using the pulse instantaneous hot stamping assembly of this utility model, the alloy heating plate 100 carrying a pulse current can heat up rapidly to heat the plastic bag, making the two film surfaces at the sealing edge of the plastic bag come into close contact and stick together. Since the alloy heating plate 100 is small in size and has less heat accumulation inside, both the alloy heating plate 100 and the sealing edge can cool down quickly. After the hot stamping is completed, the upper mold unit 310 and the lower mold unit 320 can be directly separated, allowing the alloy heating plate 100 to separate from the plastic bag, and then subsequent hot stamping and sealing can be carried out, realizing rapid and continuous sealing of plastic bags of a single material, which greatly improves the sealing efficiency of plastic bags of a single material.

[0046] Example 2:

[0047] As an optimization of Example 1, such as Figure 1As shown, there are two alloy heating elements 100, and the two alloy heating elements 100 are supplied with the same frequency pulse current. One alloy heating element 100 is attached to the upper mold unit 310, and the other alloy heating element 100 is attached to the lower mold unit 320. High temperature resistant cloth (not shown in the figure) is attached to the side of the two alloy heating elements 100 that are close to each other. When the upper mold unit 310 and the lower mold unit 320 are closed, the two high temperature resistant cloths are located on both sides of the heat sealing material (plastic bag).

[0048] It should be noted that if only one alloy heating element 100 is installed, the plastic bag will only have one side in direct contact with the alloy heating element 100. The two films at the sealing edge of the plastic bag will not be heated evenly, and the fusion of the two films will not be sufficient. This will result in weak bonding at the sealing edge, and wrinkles or unevenness will appear at the sealing edge, affecting the sealing quality and the overall aesthetics of the plastic bag.

[0049] By setting two alloy heating elements 100 positioned opposite each other, when a pulse current of the same frequency passes through, the two alloy heating elements 100 simultaneously heat the upper and lower films at the edge of the plastic bag. The heat treatment is uniform and more efficient, which helps to improve the quality and efficiency of the heat sealing, as well as the overall aesthetics of the plastic bag. By setting a high-temperature resistant heating cloth, the two alloy heating elements 100 can be separated to avoid short circuits caused by contact between the two alloy heating elements 100.

[0050] Example 3:

[0051] As an optimization of Example 2, such as Figures 1-6 As shown, the upper mold unit 310 includes an upper mold base 311 and an upper pad 312, and the lower mold unit 320 includes a lower mold base 321 and a lower pad 322. The upper pad 312 is installed on the side of the upper mold base 311 near the lower mold base 321, and an upper positioning groove 313 is provided on the side of the upper pad 312 near the lower mold base 321. The lower pad 322 is installed on the side of the lower mold base 321 near the upper mold base 311, and a lower positioning groove 323 corresponding to the upper positioning groove 313 is provided on the side of the lower pad 322 near the upper mold base 311. Two alloy heating elements 100 are respectively placed in the upper positioning groove 313 and the lower positioning groove 323. The depth of the upper positioning groove 313 and the depth of the lower positioning groove 323 are both less than the thickness of the alloy heating elements 100.

[0052] It should be noted that the two alloy heating elements 100 are respectively attached to the groove walls of the upper positioning groove 313 and the lower positioning groove 323. One alloy heating element 100 protrudes from the lower surface of the upper pad 312, and the other alloy heating element 100 protrudes from the upper surface of the lower pad 322. The plastic bag is fed along the length direction perpendicular to the alloy heating element 100. During the feeding process, the friction between the plastic bag and the alloy heating element 100 will cause the alloy heating element 100 to tend to bend and deform. The upper positioning groove 313 and the lower positioning groove 323 can not only be used to place the alloy heating element 100, but the inner walls of the upper positioning groove 313 and the lower positioning groove 323 can also provide horizontal support for the alloy heating element 100 to prevent the alloy heating element 100 from bending and deforming in the horizontal direction, which would affect the effect of hot sealing.

[0053] Example 4:

[0054] As an optimization of Example 3, such as Figures 2-7 As shown, the upper mold base 311 has upper mounting grooves 314 at both ends near the lower mold base 321, and the lower mold base 321 has lower mounting grooves 324 at both ends near the upper mold base 311. The clamping part 200 is installed in the upper mounting groove 314 and the lower mounting groove 324. The two ends of the upper positioning groove 313 extend along its length to the end face of the upper pad 312, and the bottom end face 211 of the clamping part 200 installed in the upper mounting groove 314 is higher than the top wall 3131 of the upper positioning groove 313. The two ends of the lower positioning groove 323 extend along its length to the end face of the lower pad 322, and the top end face 212 of the clamping part 200 installed in the lower positioning groove 323 is lower than the bottom wall 3231 of the lower positioning groove 323.

[0055] It should be noted that the upper positioning groove 313 is located at the bottom of the upper pad 312 and opens to both sides of the pad along its length. The two ends of the alloy heating plate 100 attached to the upper mold unit 310 are clamped and fixed by two clamping parts 200 installed in the two upper mounting grooves 314 respectively. The alloy heating plate 100 attached to the upper mold unit 310 is kept in a taut state and is always in contact with the groove wall of the upper positioning groove 313. Similarly, the alloy heating plate 100 attached to the lower mold unit 320 is kept in a taut state and is always in contact with the groove wall of the lower positioning groove 323.

[0056] Since the bottom end face 211 of the clamping part 200 installed in the upper mounting groove 314 is higher than the top wall 3131 of the upper positioning groove 313, the portion of the alloy heating plate 100 installed in the upper positioning groove 313 that extends out of the upper positioning groove 313 is inclined upward in the direction away from the upper pad 312. Since the top end face 212 of the clamping part 200 installed in the lower positioning groove 323 is lower than the bottom wall 3231 of the lower positioning groove 323, the portion of the alloy heating plate 100 installed in the lower positioning groove 323 that extends out of the lower positioning groove 323 is inclined downward in the direction away from the lower pad 322. The two alloy heating plates 100 will not affect the mold closing of the upper mold unit 310 and the lower mold unit 320.

[0057] Example 5:

[0058] As an optimization of Example 4, such as Figure 2 As shown, the clamping part 200 includes an adjustment unit, a slider 210, and a pressure block 220. The adjustment unit is installed in the upper mounting groove 314 and the lower mounting groove 324. The slider 210 is slidably connected to the adjustment unit, and the sliding direction of the slider 210 is consistent with the length direction of the alloy heating element 100. The adjustment unit is used to adjust the position of the slider 210 on the adjustment unit. The pressure block 220 is installed on the slider 210 by the first bolt 230. The pressure block 220 cooperates with the slider 210 to clamp the alloy heating element 100.

[0059] It should be noted that the alloy heating element 100 is clamped between the pressure block 220 and the slider 210. Tightening the first bolt 230 ensures that the pressure block 220 and the slider 210 clamp the alloy heating element 100. When the alloy heating element 100 is subjected to a pulse current and converts electrical energy into heat energy, the alloy heating element 100 elongates due to heat. The adjusting unit adjusts the slider 210 to move outward to ensure that the alloy heating element 100 is in a taut state. After the pulse current stops, the alloy heating element 100 cools and contracts. The adjusting unit adjusts the slider 210 to move inward to prevent the alloy heating element 100 from being too taut and damaged. The alloy heating element 100 always remains taut, has high straightness, and provides a good heat sealing effect.

[0060] In this embodiment, each clamping part 200 is provided with two first bolts 230 to ensure the stability of clamping. The first bolts 230 are internal hex bolts, the top surface of the pressure block 220 is relatively flat and aesthetically pleasing, and the first bolts 230 will not affect the mold closing of the upper mold unit 310 and the lower mold unit 320.

[0061] Example 6:

[0062] As an optimization of Example 5, such as Figure 8 and Figure 9As shown, the top of the slider 210 is provided with a groove 213, and the bottom of the pressure block 220 is provided with a protrusion 221 that cooperates with the groove 213. The length direction of the groove 213 is consistent with the length direction of the alloy heating plate 100. The pressure block 220 has a countersunk hole 222 that cooperates with the first bolt 230. The slider 210 has a threaded hole 214 that cooperates with the countersunk hole 222, and the threaded hole 214 is connected to the groove 213.

[0063] It should be noted that the first bolt 230 passes through the countersunk hole 222 and the threaded hole 214. When the first bolt 230 is tightened, the groove 213 guides the protrusion 221. The pressure block 220 will only move vertically and along the length of the alloy heating element 100. The pressing surface 223 of the pressure block 220 and the supporting surface 215 of the slider 210 are always parallel, which will not affect the installation accuracy of the alloy heating element 100. If the groove 213 and the protrusion 221 are not provided, when the first bolt 230 is tightened, it cannot be guaranteed that the pressing surface 223 of the pressure block 220 and the supporting surface 215 of the slider 210 remain parallel. After the alloy heating element 100 is clamped between the pressing surface 223 and the supporting surface 215, the alloy heating element 100 will twist to a certain extent. The alloy heating element 100 is prone to stress concentration, which will reduce the service life of the alloy heating element 100.

[0064] Example 7:

[0065] As an optimization of Example 6, such as Figure 4 and Figure 6 As shown, the slider 210 is provided with an inclined surface 216. The inclined surface 216 of the slider 210 located in the upper mounting groove 314 is located between the pressure block 220 and the upper pad 312, and the angle between the inclined surface 216 of the slider 210 located in the upper mounting groove 314 and the bottom end face 211 is an obtuse angle. The inclined surface 216 of the slider 210 located in the lower mounting groove 324 is located between the pressure block 220 and the lower pad 322, and the angle between the inclined surface 216 of the slider 210 located in the lower mounting groove 324 and the top end face 212 is an obtuse angle.

[0066] It should be noted that the bottom end face 211 is the bottom surface of the slider 210 located in the upper mounting groove 314, and the top end face 212 is the top surface of the slider 210 located in the lower mounting groove 324. When the alloy heating plate 100 is heated and stretched or cooled and contracted, the alloy heating plate 100 and the slider 210 will rub against each other. By setting the inclined surface 216 and controlling the angle between the inclined surface 216 and the bottom end face 211 or the top end face 212 to be an obtuse angle, the wear between the alloy heating plate 100 and the slider 210 can be reduced, and the service life of the alloy heating plate 100 can be improved.

[0067] Example 8:

[0068] As an optimization of Example 7, such as Figure 4 , Figure 6 , Figure 8 and Figure 9 As shown, the adjustment unit includes a partition 240, a guide rail 250 and a spring 260. The partition 240 and the guide rail 250 of the same set of adjustment units are installed in the upper mounting groove 314 or the lower mounting groove 324. The guide rail 250 is slidably connected to the slider 210, and the spring 260 is installed between the partition 240 and the slider 210.

[0069] It should be noted that when the alloy heating element 100 extends or contracts, the spring 260 will extend or shorten accordingly to ensure that the alloy heating element 100 is in a taut state.

[0070] In this embodiment, the partition 240 is installed on the side of the slider 210 near the upper pad 312 or the lower pad 322. The partition 240 has a first mounting hole 241 on the side near the slider 210, and the slider 210 has a second mounting hole 217 corresponding to the first mounting hole 241 on the side near the partition 240. The two ends of the spring 260 are respectively installed in the first mounting hole 241 and the second mounting hole 217. When the alloy heating plate 100 is not installed and the spring 260 is in its natural state, the slider 210 is still located on the guide rail 250. Therefore, the slider 210 will not fall off the guide rail 250 on its own.

[0071] When the alloy heating element 100 is installed, the spring 260 remains compressed. When the alloy heating element 100 is heated and elongated, the spring 260 elongates, and the slider 210 moves outward along the length direction of the guide rail 250 (the length direction of the guide rail 250 is consistent with the length direction of the alloy heating element 100), keeping the alloy heating element 100 taut. When the alloy heating element 100 cools and contracts, the spring 260 shortens, and the slider 210 moves inward along the length direction of the guide rail 250, keeping the alloy heating element 100 taut.

[0072] Example 9:

[0073] As an optimization of Example 8, such as Figure 2 , Figure 8 and Figure 9 As shown, slider 210 is a conductor, and terminal block 270 is installed on slider 210.

[0074] It should be noted that after the external power supply is connected to the terminal 270, since the slider 210 is a conductor, the external power supply can transmit current to the alloy heating element 100 through the terminal 270 and the slider 210.

[0075] In this embodiment, the slider 210 is made of copper, and the terminal block 270 is installed on the side of the slider 210 away from the partition 240. An external power supply is connected to a controller, which can control the power supply time and current magnitude, so that the heating temperature of the alloy heating element 100 is within the preset temperature range, ensuring a good sealing effect, improving the quality and consistency of the sealing, and avoiding incomplete sealing due to excessively low heating temperature or scorching of the plastic bag due to excessively high heating temperature.

[0076] Example 10:

[0077] As an optimization of embodiment 9, the upper pad 312, the lower pad 322, the partition 240 and the guide rail 250 are all made of insulating and heat-insulating materials.

[0078] In this embodiment, the upper pad 312, lower pad 322, partition 240, and guide rail 250 are all made of glass fiber. Glass fiber is a high-performance inorganic non-metallic material with many excellent properties such as light weight, high strength, high temperature resistance, corrosion resistance, and good insulation. The glass fiber upper pad 312, lower pad 322, partition 240, and guide rail 250 can provide good insulation and heat insulation, preventing the upper mold base 311 and lower mold base 321 from conducting electricity or overheating, thereby improving the safety of employees during operation.

[0079] The embodiments of the utility model have been described above with reference to the accompanying drawings. However, the embodiments are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the embodiments without departing from the spirit of the embodiments and the scope of protection of the claims, and all of these forms are within the protection scope of the embodiments.

Claims

1. A pulse instantaneous hot pressing assembly, characterized in that, include: An alloy heating element (100) is provided, at least one alloy heating element (100) is provided, and the alloy heating element (100) is supplied with a pulse current; A clamping part (200) is connected to the alloy heating plate (100). Multiple sets of clamping parts (200) are provided. The clamping parts (200) are used to clamp and fix the alloy heating plate (100). The support part (300) includes an upper mold unit (310) and a lower mold unit (320), the clamping part (200) is mounted on the upper mold unit (310) and / or the lower mold unit (320), and the alloy heating plate (100) is attached to the upper mold unit (310) and / or the lower mold unit (320).

2. The pulse instantaneous hot pressing assembly according to claim 1, characterized in that, Two alloy heating elements (100) are provided, and the two alloy heating elements (100) are supplied with the same frequency pulse current. One alloy heating element (100) is attached to the upper mold unit (310), and the other alloy heating element (100) is attached to the lower mold unit (320). High temperature resistant cloth is attached to the side of the two alloy heating elements (100) that are close to each other. When the upper mold unit (310) and the lower mold unit (320) are closed, the two high temperature resistant cloths are located on both sides of the heat sealing material.

3. The pulse instantaneous hot pressing assembly according to claim 2, characterized in that, The upper mold unit (310) includes an upper mold base (311) and an upper pad (312), and the lower mold unit (320) includes a lower mold base (321) and a lower pad (322). The upper pad (312) is installed on the side of the upper mold base (311) near the lower mold base (321), and the upper pad (312) near the lower mold base (321) has an upper positioning groove (313). The lower pad (322) is installed on the side of the lower mold base (321). The lower pad (322) is located on the side of the upper mold base (311) and is provided with a lower positioning groove (323) corresponding to the upper positioning groove (313) on the side of the upper mold base (311). The two alloy heating elements (100) are respectively placed in the upper positioning groove (313) and the lower positioning groove (323). The depth of the upper positioning groove (313) and the depth of the lower positioning groove (323) are both less than the thickness of the alloy heating elements (100).

4. The pulse instantaneous hot pressing assembly according to claim 3, characterized in that, The upper mold base (311) has upper mounting grooves (314) at both ends near the lower mold base (321), and the lower mold base (321) has lower mounting grooves (324) at both ends near the upper mold base (311). The clamping part (200) is installed in the upper mounting groove (314) and the lower mounting groove (324). The two ends of the upper positioning groove (313) extend along its length to the end face of the upper pad (312), and are mounted... The bottom end face (211) of the clamping part (200) installed in the upper mounting groove (314) is higher than the top wall (3131) of the upper positioning groove (313). The two ends of the lower positioning groove (323) extend along its length to the end face of the lower pad (322), and the top end face (212) of the clamping part (200) installed in the lower positioning groove (323) is lower than the bottom wall (3231) of the lower positioning groove (323).

5. The pulse instantaneous hot pressing assembly according to claim 4, characterized in that, The clamping part (200) includes an adjustment unit, a slider (210) and a pressure block (220). The adjustment unit is installed in the upper mounting groove (314) and the lower mounting groove (324). The slider (210) is slidably connected to the adjustment unit, and the sliding direction of the slider (210) is consistent with the length direction of the alloy heating element (100). The adjustment unit is used to adjust the position of the slider (210) on the adjustment unit. The pressure block (220) is installed on the slider (210) by a first bolt (230). The pressure block (220) cooperates with the slider (210) to clamp the alloy heating element (100).

6. The pulse instantaneous hot pressing assembly according to claim 5, characterized in that, The top of the slider (210) is provided with a groove (213), and the bottom of the pressure block (220) is provided with a protrusion (221) that cooperates with the groove (213). The length direction of the groove (213) is consistent with the length direction of the alloy heating plate (100). The pressure block (220) has a countersunk hole (222) that cooperates with the first bolt (230). The slider (210) has a threaded hole (214) that cooperates with the countersunk hole (222), and the threaded hole (214) communicates with the groove (213).

7. The pulse instantaneous hot pressing assembly according to claim 6, characterized in that, The slider (210) is provided with an inclined surface (216). The inclined surface (216) of the slider (210) located in the upper mounting groove (314) is located between the pressure block (220) and the upper pad (312). The angle between the inclined surface (216) of the slider (210) located in the upper mounting groove (314) and the bottom end face (211) is an obtuse angle. The inclined surface (216) of the slider (210) located in the lower mounting groove (324) is located between the pressure block (220) and the lower pad (322). The angle between the inclined surface (216) of the slider (210) located in the lower mounting groove (324) and the top end face (212) is an obtuse angle.

8. The pulse instantaneous hot pressing assembly according to claim 5, characterized in that, The adjustment unit includes a partition (240), a guide rail (250), and a spring (260). The partition (240) and the guide rail (250) of the same set of adjustment units are installed in the upper mounting groove (314) or the lower mounting groove (324). The guide rail (250) is slidably connected to the slider (210). The spring (260) is installed between the partition (240) and the slider (210).

9. The pulse instantaneous hot pressing assembly according to claim 5, characterized in that, The slider (210) is a conductor, and a terminal (270) is installed on the slider (210).

10. The pulse instantaneous hot pressing assembly according to claim 8, characterized in that, The upper pad (312), the lower pad (322), the partition (240), and the guide rail (250) are all made of insulating and heat-insulating materials.

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