A new energy battery guard plate blanking device

Abstract

The application relates to a new energy battery protection plate blanking device, which comprises hollow blanking knives, a plurality of through holes are arranged on a hot pressing plate, a heating assembly is arranged on the inner wall of the hollow blanking knife, an inner lining pressing column is inserted into the hollow blanking knife, the outer peripheral wall of the inner lining pressing column is provided with a clearance gap matched with the heating assembly, a first lifting mechanism is used for driving the hot pressing plate, the hollow blanking knife and the inner lining pressing column to move downwards to a first stroke, so that the hot pressing plate can be used for hot pressing a plate body to be processed on a bottom plate, a second lifting mechanism is used for driving the hollow blanking knife to move downwards to a second stroke, so that the hollow blanking knife can be used for blanking the plate body to be processed on the bottom plate, and a control module is used for controlling the second lifting mechanism to work when the thermosetting resin of the plate body to be processed is in a gel state and has not entered a glass state stage. Through the setting of the blanking time, the hollow blanking knife heated by the heating assembly can significantly reduce the delamination and burr phenomenon when blanking the thermosetting resin and each layer of material.

Description

Technical Field

[0001] This application relates to the technical field of battery pack protective plate processing, and in particular to a punching device for new energy battery protective plates. Background Technology

[0002] The battery pack of a new energy electric vehicle is usually located at the bottom of the vehicle. When the vehicle is driving on uneven or other abnormal road surfaces, the bottom of the battery pack is susceptible to impacts from bumps or hard objects such as stones. Therefore, a protective plate is needed at the bottom of the battery pack to protect it and improve vehicle safety. Currently, commonly used battery protective plates include pure plastic protective plates, steel protective plates, aluminum alloy protective plates, and fiber-reinforced thermosetting composite material protective plates.

[0003] Fiber-reinforced thermosetting composite bottom panels are widely used by OEMs due to their excellent impact resistance, corrosion resistance, and recyclability. They are generally made by hot-pressing the core material and glass fiber prepreg sheets into one piece. Specifically, the glass fiber prepreg sheets on the upper and lower sides of the core material are heated and pressurized to achieve secondary resin flow on the surface of the glass fiber prepreg sheets, thereby fully impregnating the fibers and finally obtaining a high-performance composite material board. Finally, the installation holes, weight reduction holes, ventilation holes, etc. are punched out by mechanical punching.

[0004] However, due to the anisotropy and weak interlayer bonding of fiber-reinforced thermosetting composites, peri-hole delamination and fiber tearing are prone to occur after punching. This is because the huge impact and shearing forces during punching can easily cause delamination between the resin matrix and the fibers or between different layups. The fiber bundles may also be torn or pulled out along the direction of the force. Moreover, the interaction between the punching edge and the materials of each layer will form irregular burrs on the inlet and outlet sides of the hole, resulting in rough edges that affect the appearance and assembly. Summary of the Invention

[0005] In order to improve the quality defects such as delamination or burrs around the holes that easily occur when punching holes in the battery guard plate after thermosetting, this application provides a punching device for new energy battery guard plates.

[0006] The new energy battery guard plate punching device provided in this application adopts the following technical solution:

[0007] A punching device for a new energy battery guard plate includes a machine base, a base plate, a hot press plate, and a fixing fixture. The hot press plate is flexibly positioned above the base plate. The device also includes:

[0008] Hollow punching cutters are provided and used to punch holes in the plate to be processed. The hot press plate has multiple through holes that are adapted to be inserted into the hollow punching cutters one by one.

[0009] A heating element is located on the inner wall of the hollow punching blade to heat the hollow punching blade to a set temperature.

[0010] The inner lining pressure column is inserted into the hollow punching cutter, and its outer peripheral wall is provided with a clearance notch adapted to the heating component, so that the part of the inner wall of the hollow punching cutter without the heating component fits against the outer wall of the inner lining pressure column.

[0011] The first lifting mechanism is used to drive the hot press plate, the hollow punch cutter, and the inner lining pressure column to move down to the first stroke so as to hot press the plate to be processed on the base plate.

[0012] The second lifting mechanism is used to drive the hollow punching blade down to the second stroke to punch the plate to be processed on the base plate; and

[0013] The control module is used to control the operation of the second lifting mechanism when the thermosetting resin of the plate to be processed is in the gel state and has not yet entered the glass state.

[0014] Furthermore, it also includes:

[0015] A first mounting plate is fixedly connected to the top of the hot press plate, and the inner lining pressure column is mounted on the first mounting plate;

[0016] The second mounting plate is lifted and lowered on the hot press plate or the first mounting plate. The hollow punching cutter is mounted on the second mounting plate. The second lifting mechanism is used to drive the second mounting plate to rise and fall above the first mounting plate.

[0017] Furthermore, the second mounting plate is equipped with a plurality of barbs that correspond one-to-one with the plurality of inner lining pressure columns. The lower end of the barb is provided with a barb claw, and the barb claw is provided with barbs.

[0018] The inner lining pressure column is provided with a receiving groove that is compatible with both the spike rod and the spike claw; when the spike rod is reset to its initial state, the bottom end of the spike claw is retracted into the receiving groove.

[0019] When the hollow punching blade moves down to contact the upper surface of the base plate, the distance between the bottom end of the punching claw and the upper surface of the base plate is less than the thickness of the plate to be processed.

[0020] Furthermore, the lower end of the bar is fixedly connected with a plurality of barbed claws at intervals, and the distance between two adjacent barbed claws is greater than the thickness of the plate to be processed.

[0021] Furthermore, the barbed claw is in the shape of a multi-faceted pyramid.

[0022] Furthermore, the hollow punching cutter is rotatably mounted on the second mounting plate, and the hollow punching cutter is provided with a rotary cutting structure for synchronously rotating when punching the plate to be processed;

[0023] The rotary cutting angle of the hollow punch is not greater than the central angle of the avoidance notch.

[0024] Furthermore, the rotary cutting structure includes:

[0025] The central column is fixed to the lower end face of the second mounting plate, and its outer arc-shaped peripheral wall is fixed with a plurality of first inclined platforms arranged along its axial direction at equal intervals.

[0026] The sleeve is rotatably fitted around the central column, and its inner circumferential wall is provided with a plurality of second inclined platforms that are adapted to the plurality of first inclined platforms. The hollow punching cutter is fixedly connected to the lower part of the sleeve. When the central column pushes the sleeve down, the sleeve achieves rotational movement on the central column by means of the oblique sliding between the second inclined platform and the first inclined platform.

[0027] Limiting and resetting components are used to prevent the sleeve from falling off the central column and to reverse and reset when the central column and sleeve are not under pressure.

[0028] Furthermore, the rotary cutting structure includes:

[0029] Guide pillars are provided in multiple and are fixed at equal intervals to the inner peripheral wall of the hollow punching cutter;

[0030] The guide groove corresponds one-to-one with the multiple guide posts and is formed on the outer peripheral wall of the arc surface of the inner lining pressure post. The guide posts and the guide groove are slidably adapted. When the hollow punching cutter moves down relative to the inner lining pressure post, the guide post slides in the guide groove to drive the hollow punching cutter to rotate.

[0031] Furthermore, the second mounting plate is elastically mounted on the first mounting plate, and the second lifting mechanism is mounted on the first mounting plate.

[0032] Furthermore, the outer wall of the hollow punching blade is coated with an anti-stick coating, and the heating temperature of the hollow punching blade by the heating component is greater than the glass transition temperature of the thermosetting resin of the plate to be processed.

[0033] In summary, the beneficial technical effects of this application are as follows:

[0034] 1. By setting a certain value in the range of 50% to 80% curing degree of the thermosetting resin on the board to be processed, or when the thermosetting resin on the board to be processed is in the gel state but not yet in the glass state, the control module controls the second lifting mechanism to drive the hollow punching blade to punch out the mounting hole on the board to be processed. At this time, the thermosetting resin has sufficient strength to resist delamination, and the thermosetting resin can be further softened by the hollow punching blade heated by the heating component. This allows for sealing of the punched edge. Compared with punching the fully cured thermosetting resin, this method can not only greatly reduce the punching force of the hollow punching blade, but also help reduce burrs and fiber pull-out. It can effectively control the delamination phenomenon during punching and significantly improve the processing quality.

[0035] 2. By sliding the barb on the inner lining pressure column and making the barb move synchronously with the hollow punching cutter, the barb claw on the barb can automatically grab the punching waste during the punching operation of the hollow punching cutter. After the punching is completed, the hot press plate moves up and resets as a whole, and after the processed plate is transferred, the second lifting mechanism drives the second mounting plate to reset, which can realize the automatic removal of the punching waste grabbed by the barb claw. This realizes the automatic grabbing and removal of punching waste during the punching process, eliminating the need for production personnel to pick out the punching waste one by one from the plate after the punching is completed, which greatly improves production efficiency.

[0036] 3. By setting a rotary cutting structure on the hollow punching blade, the heated hollow punching blade can also rotate while punching the plate to be processed. On the one hand, this can reduce the punching force and improve the punching effect; on the other hand, it can more easily cut the thermosetting resin and each material layer, reducing the risk of delamination; and on the other hand, it can also reduce the probability of the softened thermosetting resin sticking to the hollow punching blade during the punching process. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0038] Figure 2 This is a cross-sectional view of an embodiment of the present application along the length of the first mounting plate;

[0039] Figure 3 yes Figure 2 A magnified view of part A in the middle;

[0040] Figure 4 This is a cross-sectional view of the hollow punching cutter and the barbed claw entering the plate to be processed according to an embodiment of this application.

[0041] Figure 5 This is a schematic diagram of the hollow punching cutter, inner lining pressure column, and punching rod in an embodiment of this application.

[0042] Explanation of reference numerals in the attached figures:

[0043] 1. Machine base; 11. Base plate;

[0044] 2. Hot press plate; 21. Perforation;

[0045] 3. Hollow punch cutter; 31. Heating assembly

[0046] 4. The board to be processed;

[0047] 5. Inner lining pillar; 51. Clearance opening; 52. Receiving groove;

[0048] 61. First mounting plate; 62. Second mounting plate;

[0049] 7. Spike bar; 71. Spike claw;

[0050] 81. First lifting mechanism; 82. Second lifting mechanism;

[0051] 91. Guide post; 92. Guide groove. Detailed Implementation

[0052] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0053] This application discloses a punching device for a new energy battery protective plate. (Refer to...) Figure 1 , Figure 2 and Figure 3 The machine includes a machine base 1, a base plate 11, a hot press plate 2, and a fixing fixture. The hot press plate 2 is flexibly positioned above the base plate 11. The fixing fixture is used to position and fix the plate to be processed 4 onto the base plate 11. The hot press plate 2 is used to heat and press the plate to be processed 4 onto the base plate 11. The arrangement of the hot press plate 2, the fixing fixture, etc., is all existing technology and can be fully implemented by those skilled in the art, so there is no need to elaborate.

[0054] Reference Figure 3 , Figure 4 and Figure 5 The punching device also includes:

[0055] The hollow punching cutter 3 is provided with multiple holes for punching holes in the plate 4 to be processed. The hot press plate 2 has multiple through holes 21 that are adapted to be inserted into the hollow punching cutter 3. Taking the punching mounting hole as an example, the hollow punching cutter 3 is cylindrical and has a cutting edge at its lower end.

[0056] A heating component 31, disposed on the inner wall of the hollow cutting blade 3, is used to heat the hollow cutting blade 3 to a set temperature. The heating temperature of the hollow cutting blade 3 by the heating component 31 is higher than the glass transition temperature of the thermosetting resin of the workpiece 4, but much lower than the decomposition temperature of the thermosetting resin. This is to prevent the thermosetting resin from sticking to the blade or undergoing local degradation due to excessively high temperature, and to prevent the hollow cutting blade 3 from being too cold to effectively soften and cut the thermosetting resin of the workpiece 4. In a specific configuration, the heating component 31 can be an electric heating wire, an electric heating rod, an electric heating mesh, etc. In this embodiment, it is configured as multiple electric heating rods arranged axially along the hollow cutting blade 3 and at equal intervals.

[0057] The inner lining pressure column 5 is inserted into the hollow punching knife 3. Its outer peripheral wall is provided with a relief notch 51 that is adapted to the heating component 31 so that the part of the inner wall of the hollow punching knife 3 without the heating component 31 is in contact with the outer wall of the inner lining pressure column 5. Specifically, when the hot press plate 2 presses the plate to be processed 4, the lower end face of the hollow punching knife 3 and the inner lining pressure column 5 are in close contact with the upper end face of the plate to be processed 4. The outer wall of the hollow punching knife 3 is in contact with the wall of the through hole 21 on the hot press plate 2, and most of the inner wall is in contact with the outer wall of the inner lining pressure column 5 so that the plate to be processed 4 can be pressed more evenly.

[0058] The first lifting mechanism 81 is used to drive the hot press plate 2, the hollow punch cutter 3, and the inner lining pressure column 5 to move down to the first stroke to hot press the plate 4 to be processed on the base plate 11; specifically, a gantry frame is provided on the machine base 1, and the first lifting mechanism 81 is set as a cylinder or hydraulic cylinder installed upside down on the gantry frame, and its output end is fixedly connected to the hot press plate 2, such as Figure 1 and Figure 2 As shown.

[0059] The second lifting mechanism 82 is used to drive the hollow punching blade 3 to move down to the second stroke to punch the plate 4 to be processed on the base plate 11. The interval between the second stroke and the first stroke is the thickness of the plate 4 to be processed. The second lifting mechanism 82 can be a cylinder, a hydraulic cylinder, or a cam-linkage punching mechanism. However, considering that the driving stroke of the second lifting mechanism 82 needs to be adjusted when processing battery guard plates of different thicknesses, in this embodiment, the second lifting mechanism 82 is preferably a hydraulic cylinder. Figure 1 and Figure 2 As shown.

[0060] The control module controls the second lifting mechanism 82 to operate when the thermosetting resin of the plate 4 to be processed is in the gel state but not yet in the glass state. In other words, the control module controls the heated hollow cutting blade 3 to perform a cutting operation on the plate 4 to be processed when the degree of curing of the thermosetting resin of the plate 4 to be processed reaches 50% to 80%. This cutting timing can be set based on the total hot pressing process time and material characteristics, and this timing value is embedded in the control program. When the plate 4 to be processed is hot-pressed to the timing value, the control module controls the second lifting mechanism 82 to operate to perform the cutting operation. It should be noted that the corresponding cutting operation timing value needs to be adjusted when producing battery protection plates of different models and sizes. Alternatively, in another embodiment, a detection mechanism can be set on the machine 1 to monitor the curing degree of the thermosetting resin on the plate 4 to be processed in real time. For example, a near-infrared spectrometer can be used to scan the material to estimate the curing degree, or an ultrasonic detector can be used to judge the curing degree of the material. In this way, the detection mechanism can be electrically connected to the control module. When the detection mechanism detects that the curing degree of the thermosetting resin on the plate 4 to be processed reaches a certain set value in the range of 50% to 80%, the control module automatically controls the second lifting mechanism 82 to work, which can realize the automatic punching operation of the hollow punching knife 3, and is not limited by the model or material of the plate 4 to be processed.

[0061] The first mounting plate 61 is fixedly connected to the top of the hot press plate 2, and the inner lining pressure column 5 is installed on the first mounting plate 61. In this embodiment, the mounting holes to be punched are distributed on both sides of the plate body 4 to be processed, and are arranged at equal intervals on one side. There are two corresponding first mounting plates 61, which are arranged along the direction of the multiple inner lining pressure columns 5 on one side. The multiple inner lining pressure columns 5 on the same side are fixedly connected to the corresponding first mounting plate 61. Figure 1 and Figure 2 As shown.

[0062] The second mounting plate 62 is flexibly mounted on the hot press plate 2 or the first mounting plate 61. The hollow cutting blade 3 is mounted on the second mounting plate 62 via a U-shaped bracket, and the U-shaped bracket is staggered with the first mounting plate 61 so that the first mounting plate 61 does not interfere with the first mounting plate 61 pushing the hollow cutting blade 3 downward via the U-shaped bracket. The second lifting mechanism 82 is used to drive the second mounting plate 62 to move up and down above the first mounting plate 61. Specifically, the second mounting plate 62 is elastically mounted on the hot press plate 2 so that the hollow cutting blade 3 can elastically cut the plate 4 to be processed, avoiding rigid cutting. The second lifting mechanism 82 is mounted on the hot press plate 2, such as... Figure 1 and Figure 2 As shown; wherein, the way in which the second mounting plate 62 is elastically mounted on the hot press plate 2 is a conventional technical means, which can be fully implemented by those skilled in the art, and will not be described in detail here.

[0063] Therefore, when processing the battery guard plate using the punching device of this application, the plate to be processed 4 is first transferred to the base plate 11 and positioned and fixed by a fixing fixture; then the first lifting mechanism 81 drives the hot pressing plate 2 to move down to hot press the plate to be processed 4. During the pressure holding and heating process, the hollow punching knife 3 and the inner lining pressure column 5 simultaneously press the area of ​​the plate to be processed 4 corresponding to the perforation 21 on the hot pressing plate 2, which can ensure the uniform pressing effect of the plate to be processed 4 as much as possible. Figure 2 and Figure 3 As shown.

[0064] Then, when the set punching timing is reached or the detection mechanism detects that the curing degree of the thermosetting resin on the workpiece 4 has reached a certain set value within the range of 50% to 80%, the control module controls the second lifting mechanism 82 to work. The second lifting mechanism 82 drives the second mounting plate 62 to move down to the second stroke, so that multiple hollow punching blades 3 on the second mounting plate 62 can simultaneously punch out mounting holes on the workpiece 4, such as... Figure 2 and Figure 4 As shown. Since the degree of curing of the thermosetting resin on the plate 4 to be processed reaches 50% to 80%, the thermosetting resin has gelled and has a certain strength, but it is not completely cured. When the hollow punching knife 3 punches the plate 4 to be processed, the thermosetting resin has sufficient strength to resist delamination. In addition, the thermosetting resin can be further softened locally by the hollow punching knife 3 heated by the heating component 31, which can seal the edge of the punching cut. Compared with punching the fully cured thermosetting resin, this method can not only greatly reduce the punching force of the hollow punching knife 3, but also help reduce burrs and fiber pull-out, effectively control the delamination phenomenon during punching, and significantly improve the processing quality.

[0065] In addition, to facilitate the unloading of the waste material produced by punching, refer to Figure 3 , Figure 4 and Figure 5 On the second mounting plate 62, there are multiple barbs 7 that correspond one-to-one with multiple inner lining pressure columns 5. The lower end of the barb 7 is provided with barb claws 71, and the barb claws 71 are provided with barbs.

[0066] The inner lining pressure column 5 is provided with a receiving groove 52 that is compatible with the spike bar 7 and the spike claw 71; when the spike bar 7 is reset to the initial state, the bottom end of the spike claw 71 is retracted into the receiving groove 52.

[0067] Furthermore, when the hollow punch cutter 3 moves down to contact the upper end face of the base plate 11, the distance between the bottom end of the piercing claw 71 and the upper end face of the base plate 11 is less than the thickness of the plate body 4 to be processed.

[0068] Specifically, the lower end of the barbed rod 7 is fixedly connected with multiple barbed claws 71 arranged along its axial direction at intervals, and the distance between two adjacent barbed claws 71 is greater than the thickness of the plate 4 to be processed. The barbed claws 71 are in the shape of a multi-sided pyramid, specifically a dihedral pyramid, a trihedral pyramid, or a quadrangular pyramid.

[0069] Therefore, when the second mounting plate 62 drives multiple hollow punching blades 3 to perform synchronous punching, the second mounting plate 62 also drives multiple bar spikes 7 to move downwards, so that multiple bar spike claws 71 on the bar spikes 7 can insert into the waste material that the hollow punching blades 3 are about to punch out, thus fixing the waste material punched out by the hollow punching blades 3. Figure 4 and Figure 5 As shown, the arrangement of multiple barbed claws 71 at intervals helps to improve the stability of the barbed bar 7 after it grabs the blanking waste. The barbed claws 71 are set in a multi-faceted pyramid shape and are provided with barbs, which can further improve the firmness of the barbed bar 7 after it grabs the blanking waste and can effectively prevent the blanking waste from falling off prematurely when transferring the blanking waste.

[0070] After the hollow punching blade 3 completes the punching, the first lifting mechanism 81 first drives the hot press plate 2 to rise, so as to carry the hollow punching blade 3, the inner lining pressure column 5 and the bar 7 to move upward in a neat manner while maintaining their current relative state. After moving to the initial position, the processed plate can be transferred out of the base plate 11. Then the second lifting mechanism 82 drives the second mounting plate 62 to move upward and reset. At this time, the multiple hollow punching blades 3 move away from the plate 4 to be processed, and the bar 7 also drives the multiple bar claws 71 to move upward relative to the inner lining pressure column 5 and retract into the receiving groove 52. The punching waste on the bar 7 falls off under the push of the bottom surface of the inner lining pressure column 5, realizing the automatic grabbing and unloading of punching waste during the punching process. This eliminates the need for production personnel to pick out the punching waste one by one from the plate after the punching is completed, greatly improving production efficiency.

[0071] In addition, to further improve the punching effect of the hollow punching knife 3 and to avoid excessive adhesion between the thermosetting resin of the plate to be processed 4 and the hollow punching knife 3 after softening.

[0072] In another feasible embodiment, the hollow punching cutter 3 is rotatably mounted on the second mounting plate 62. The hollow punching cutter 3 is provided with a rotary cutting structure for synchronous rotation when punching the plate 4 to be processed. The rotary cutting angle of the hollow punching cutter 3 is not greater than the central angle of the clearance notch 51, so as to avoid interference when the heating component 31, which may protrude from the inner wall of the hollow punching cutter 3, rotates in the clearance notch 51 of the inner lining pressure column 5. Of course, if the heating component 31 is thinner or not arranged along the axial direction of the hollow punching cutter 3, this restriction can be waived.

[0073] Specifically, in one feasible implementation, the rotary cutting structure includes:

[0074] The central column is fixed to the lower end face of the second mounting plate 62, and its outer peripheral wall of the arc surface is fixed with a plurality of first inclined platforms arranged along its axial direction at equal intervals.

[0075] The sleeve is rotatably fitted outside the central column, and its inner circumferential wall is provided with multiple second inclined platforms that are adapted to multiple first inclined platforms. The hollow punching cutter 3 is fixedly connected to the lower part of the sleeve. When the central column pushes the sleeve down, the sleeve achieves rotational movement on the central column by means of the oblique sliding between the second inclined platform and the first inclined platform.

[0076] The limiting component and the resetting component are used to prevent the sleeve from falling off the central column and to reverse and reset when the central column and the sleeve are not under pressure. The limiting component can be two limiting rings with different inner diameters respectively fixed to the upper end of the sleeve and the central column, and the resetting component can be a torsion spring with a certain axial compression space. Both of them belong to the prior art and can be fully implemented by those skilled in the art, so they will not be elaborated further.

[0077] Therefore, when the second mounting plate 62 moves downward under the drive of the second lifting mechanism 82, it first drives the central column to move downward. When the central column moves downward, it tends to drive the sleeve to move downward synchronously. During the process of the sleeve driving the hollow punching knife 3 to move downward and cutting the plate to be processed 4, it is subject to a certain resistance, which causes the first and second inclined platforms on the central column and the sleeve to move relative to each other, thereby forming the rotational motion of the sleeve on the central column. Thus, the heated hollow punching knife 3 also performs a certain rotational motion when punching the plate to be processed 4. On the one hand, it can reduce the punching force and improve the punching effect; on the other hand, it can more conveniently cut the thermosetting resin and each material layer, reducing the risk of delamination; and on the other hand, it can also reduce the probability of the softened thermosetting resin sticking to the hollow punching knife 3 during the punching process.

[0078] In another feasible implementation, refer to Figure 5 The rotary-cut structure includes:

[0079] Guide columns 91 are provided in multiple and are fixedly connected to the inner peripheral wall of the hollow punch cutter 3 at equal intervals;

[0080] The guide groove 92 corresponds one-to-one with multiple guide posts 91 and is opened on the outer peripheral wall of the arc surface of the inner lining pressure post 5. The guide posts 91 and the guide groove 92 are slidably adapted. When the hollow punch cutter 3 moves down relative to the inner lining pressure post 5, the guide post 91 slides in the guide groove 92 to drive the hollow punch cutter 3 to rotate. The guide groove 92 is an inclined groove or spiral groove arranged along the axial direction of the inner lining pressure post 5 and is located between two adjacent clearance notches 51.

[0081] Therefore, when the second mounting plate 62 moves downward under the drive of the second lifting mechanism 82, the second mounting plate 62 directly drives the hollow punching blade 3 to move downward. During the process of punching the plate 4 to be processed, the guide post 91 on the inner wall of the hollow punching blade 3 slides in the guide groove 92 on the outer wall of the inner lining pressure post 5, so that the punching operation of the hollow punching blade 3 becomes rotary punching, which also has the above-mentioned beneficial effects. Considering the simplicity of the structural setting, the second implementation method is selected in this embodiment.

[0082] In addition, an anti-stick coating, such as a polytetrafluoroethylene coating, can be applied to the outer wall of the hollow punching blade 3 to achieve the same effect of reducing the adhesion of the cured resin to the hollow punching blade 3.

[0083] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0084] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A new energy battery guard plate blanking device, comprising a machine table, a bottom plate, a hot pressing plate and a fixing clamp, the hot pressing plate is arranged above the bottom plate, characterized in that, Also comprising: a plurality of hollow punching knives for punching holes on the plate body to be processed, a plurality of through holes are provided on the hot pressing plate and are adapted to be inserted into the hollow punching knives; a heating assembly provided on the inner wall of the hollow punching knife for heating the hollow punching knife to a set temperature; an inner lining pressing column inserted into the hollow punching knife, and the outer peripheral wall of the inner lining pressing column is provided with a clearance adapted to the heating assembly, so that the part of the inner wall of the hollow punching knife without the heating assembly is in contact with the outer wall of the inner lining pressing column; a first lifting mechanism for driving the hot pressing plate, the hollow punching knife and the inner lining pressing column to move downward to the first stroke to hot press the plate body to be processed on the bottom plate; a second lifting mechanism for driving the hollow punching knife to move downward to the second stroke to punch the plate body to be processed on the bottom plate; and a control module for controlling the second lifting mechanism to work when the thermosetting resin of the plate body to be processed is in the gel state and has not entered the glass state stage; a first mounting plate fixed above the hot pressing plate, and a second mounting plate is provided above the hot pressing plate or the first mounting plate, and the second lifting mechanism is used to drive the second mounting plate to rise and fall above the first mounting plate; a plurality of material piercing rods corresponding to the plurality of inner lining pressing columns are installed on the second mounting plate, and the lower end of the material piercing rod is provided with a material piercing claw, and the material piercing claw is provided with a barb; the inner lining pressing column is provided with a containing groove adapted to the material piercing rod and the material piercing claw, and when the material piercing rod is reset to the initial state, the bottom end of the material piercing claw is received in the containing groove.

2. The new energy battery guard blanking device according to claim 1, characterized in that, The inner lining pressing column is installed on the first mounting plate, and the hollow punching knife is installed on the second mounting plate.

3. The new energy battery protection plate punching device according to claim 2, wherein when the hollow punching knife moves downward to contact the upper end surface of the bottom plate, the distance between the bottom end of the material piercing claw and the upper end surface of the bottom plate is less than the thickness of the plate body to be processed.

4. The new energy battery guard blanking device according to claim 3, characterized in that, A plurality of material piercing claws are fixed at the lower end of the material piercing rod at intervals, and the distance between the adjacent two material piercing claws is greater than the thickness of the plate body to be processed.

5. The new energy battery guard blanking device according to claim 4, characterized in that, The material piercing claw is in the shape of a multi-prism.

6. The new energy battery guard blanking device according to any one of claims 2-5, characterized in that, The hollow punching knife is rotationally installed on the second mounting plate, and the hollow punching knife is provided with a rotary cutting structure for realizing synchronous rotation when the hollow punching knife punches the plate body to be processed. The rotary cutting angle of the hollow punching knife is not greater than the central angle of the clearance.

7. The new energy battery guard blanking device according to claim 6, characterized in that, The rotary cutting structure comprises: a center column fixed to the lower end surface of the second mounting plate, and the arc outer peripheral wall of the center column is fixed with a plurality of first inclined tables arranged along the axial direction at equal intervals; a sleeve rotationally sleeved on the outer side of the center column, and the arc inner peripheral wall of the sleeve is provided with a plurality of second inclined tables adapted to the first inclined tables, and the hollow punching knife is fixed below the sleeve; when the center column pushes the sleeve downward, the sleeve rotates on the center column by means of the inclined sliding of the second inclined table and the first inclined table; a limiting piece and a resetting piece for preventing the sleeve from falling off the center column and preventing the center column and the sleeve from reversing and resetting when not under pressure.

8. The new energy battery guard blanking device according to claim 6, characterized in that, The rotary cutting structure comprises: a plurality of guide columns are provided and fixed on the inner peripheral wall of the hollow punching knife at equal intervals; A guide slot is arranged on the outer peripheral wall of the inner lining pressure column arc surface in one-to-one correspondence with the plurality of guide columns, and the guide column and the guide slot are in sliding fit; when the hollow blanking cutter moves downward relative to the inner lining pressure column, the guide column slides in the guide slot to drive the hollow blanking cutter to rotate.

9. The new energy battery guard blanking device according to claim 2, characterized in that, The second mounting plate is elastically mounted on the first mounting plate, and the second lifting mechanism is mounted on the first mounting plate.

10. The new energy battery guard blanking device according to claim 1, characterized in that, The outer wall of the hollow blanking cutter is coated with an anti-sticking coating, and the heating temperature of the heating assembly on the hollow blanking cutter is greater than the glass transition temperature of the thermosetting resin of the plate body to be processed.

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